CN116969702B - Pipe pile factory utilizes CO2Method, system and tubular pile for preparing multifunctional glue material - Google Patents
Pipe pile factory utilizes CO2Method, system and tubular pile for preparing multifunctional glue material Download PDFInfo
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- CN116969702B CN116969702B CN202310953401.8A CN202310953401A CN116969702B CN 116969702 B CN116969702 B CN 116969702B CN 202310953401 A CN202310953401 A CN 202310953401A CN 116969702 B CN116969702 B CN 116969702B
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- 239000000463 material Substances 0.000 title claims abstract description 126
- 239000003292 glue Substances 0.000 title claims description 19
- 239000002002 slurry Substances 0.000 claims abstract description 108
- 238000002156 mixing Methods 0.000 claims abstract description 76
- 230000000694 effects Effects 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 39
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 34
- 239000004568 cement Substances 0.000 claims abstract description 34
- 238000000498 ball milling Methods 0.000 claims abstract description 32
- 238000002360 preparation method Methods 0.000 claims abstract description 28
- 239000002910 solid waste Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000004064 recycling Methods 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 239000002893 slag Substances 0.000 claims description 48
- 238000003756 stirring Methods 0.000 claims description 35
- 239000002738 chelating agent Substances 0.000 claims description 30
- 238000001238 wet grinding Methods 0.000 claims description 30
- 239000013078 crystal Substances 0.000 claims description 29
- 239000002956 ash Substances 0.000 claims description 26
- 238000000227 grinding Methods 0.000 claims description 25
- 239000003638 chemical reducing agent Substances 0.000 claims description 23
- 239000012071 phase Substances 0.000 claims description 19
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000003472 neutralizing effect Effects 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 239000011575 calcium Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- 229910052791 calcium Inorganic materials 0.000 claims description 10
- 239000010881 fly ash Substances 0.000 claims description 10
- 239000002028 Biomass Substances 0.000 claims description 9
- 239000004471 Glycine Substances 0.000 claims description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 9
- 239000011777 magnesium Substances 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 159000000003 magnesium salts Chemical class 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 8
- 239000007790 solid phase Substances 0.000 claims description 8
- 238000004056 waste incineration Methods 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 8
- 238000000265 homogenisation Methods 0.000 claims description 7
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 5
- 239000000347 magnesium hydroxide Substances 0.000 claims description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005191 phase separation Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 24
- 239000002244 precipitate Substances 0.000 abstract description 2
- 239000000084 colloidal system Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 125
- 239000000499 gel Substances 0.000 description 33
- 238000006243 chemical reaction Methods 0.000 description 19
- 239000006184 cosolvent Substances 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 239000004575 stone Substances 0.000 description 15
- 239000004576 sand Substances 0.000 description 14
- 239000000654 additive Substances 0.000 description 12
- 230000000996 additive effect Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 10
- 238000011049 filling Methods 0.000 description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 description 10
- 239000011707 mineral Substances 0.000 description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 9
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 9
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 9
- 239000000467 phytic acid Substances 0.000 description 9
- 229940068041 phytic acid Drugs 0.000 description 9
- 235000002949 phytic acid Nutrition 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 7
- 235000019832 sodium triphosphate Nutrition 0.000 description 7
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 6
- -1 polyethylene carbonate Polymers 0.000 description 6
- 229930006000 Sucrose Natural products 0.000 description 5
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 4
- OVBJJZOQPCKUOR-UHFFFAOYSA-L EDTA disodium salt dihydrate Chemical compound O.O.[Na+].[Na+].[O-]C(=O)C[NH+](CC([O-])=O)CC[NH+](CC([O-])=O)CC([O-])=O OVBJJZOQPCKUOR-UHFFFAOYSA-L 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 230000033558 biomineral tissue development Effects 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 229920000333 poly(propyleneimine) Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- LUFCRXHUFRHQMG-UHFFFAOYSA-O CCO.[O-][N+]([O-])=O.N.[NH4+] Chemical group CCO.[O-][N+]([O-])=O.N.[NH4+] LUFCRXHUFRHQMG-UHFFFAOYSA-O 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- RNIHAPSVIGPAFF-UHFFFAOYSA-N Acrylamide-acrylic acid resin Chemical group NC(=O)C=C.OC(=O)C=C RNIHAPSVIGPAFF-UHFFFAOYSA-N 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000007798 antifreeze agent Substances 0.000 description 1
- YIPVATRQFMILFY-UHFFFAOYSA-N azane;ethyl nitrate Chemical group N.CCO[N+]([O-])=O YIPVATRQFMILFY-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
Abstract
The invention discloses a method, a system and a tubular pile for preparing a multifunctional adhesive material by utilizing CO 2 in a tubular pile factory, wherein the method comprises the following steps of S1, mixing solid waste, water and a first industrial auxiliary agent to obtain a first slurry, S2, adding the first slurry in a continuous feeding mode, and performing first wet ball milling on the first slurry under a first CO 2 -containing gas medium; s3, using the tail gas containing CO 2 generated in the step S2 as a first CO 2 -containing gas medium of the next batch for recycling, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material; and T1, mixing the tubular pile residual slurry cement and a second industrial auxiliary agent to obtain second slurry, T2, adding the next second slurry after the preparation of one batch of products is finished by adopting a discontinuous feeding mode, performing second wet ball milling on the second slurry under a second CO 2 -containing gas medium to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2. CaCO 3 precipitate is generated in the preparation process, CO 2 gas can be solidified, and the colloid utilization of CO 2 is realized.
Description
Technical Field
The invention relates to the technical field of CO 2 sealing and utilization, in particular to a method, a system and a tubular pile for preparing a multifunctional adhesive material by using CO 2 in a tubular pile factory.
Background
In order to slow down the global climate impact of greenhouse gases, it is necessary to capture a large amount of CO 2 and isolate it from the atmosphere by burying it deep underground or subsea, but a better strategy would be to find a technical means to make efficient use of CO 2 as a resource, enabling its large-scale application. For example, the technology of preparing multifunctional composite metal hydroxide, long-acting ammonium bicarbonate, ethylene glycol and methane by utilizing CO 2 has already entered the industrial production stage; technology for preparing high added value carbonates and styrenes has entered the engineering stage; the technique for preparing dimethyl carbonate has also been successful in laboratory studies. In particular, CO 2 is used as raw material, and is polymerized with ethylene oxide to synthesize polyethylene carbonate (PEC) resin, and finally the aliphatic polycarbonate polyester semi-rigid foam plastic is produced. However, the following problems still remain in the CO 2 resource utilization process:
(1) Some chemicals prepared by taking CO 2 as a raw material have small market demands, so that the demands of corresponding conversion technologies on CO 2 are relatively small, and the purpose of reducing the emission of CO 2 in the atmosphere is difficult to fully develop by the conversion scheme;
(2) In the production process from CO 2 to chemical conversion, a large amount of solvents or catalysts with toxic and harmful effects are often required to support, or the produced products contain toxic and harmful elements, so that the technology solves the problem of CO 2 and simultaneously causes a new environmental pollution problem, and cannot truly relieve the sharp contradiction between economic and social development and the environment;
(3) The CO 2 conversion technology has the advantages that the realization cost is too high, the cost for preparing the chemical by using other raw materials is exceeded, or the emission of CO 2 calculated by the consumed energy consumption is far beyond the emission of converted CO 2, so that the technology is difficult to popularize and apply in the market from the aspects of technical effect or economy;
(4) The highly symmetrical molecular structure and the highly oxidized carbon element determine the very stable chemical nature of CO 2. The C-O bond energy is 783kJ/mol, the standard Gibbs free formation enthalpy of CO 2 is-394.38 kJ/mol, which clearly shows that additional energy needs to be provided for effective CO 2 activation, which results in low CO 2 conversion and low energy efficiency, which are technical barriers that are difficult to break through by the current thermodynamic theory.
The tubular pile has the advantages of high bearing capacity, good pile body quality, high construction speed and the like, and is widely applied to projects such as high-rise buildings, railways, highways, bridges, ports and wharfs. In the pipe pile production process, high-doped Portland cement, high-quality sand and stone aggregate, high-temperature steam curing operation and the like are generally adopted, and meanwhile, a high-speed centrifugal compaction forming process with high power consumption is also adopted. The development and popularization of low-carbonization technologies such as low cement consumption, low steel consumption, low steam consumption and the like in tubular pile unit products is an effective way for green production in the tubular pile industry.
Disclosure of Invention
In order to solve the problems of low product market demand, environmental protection in the recycling process, high recycling cost, low CO 2 conversion rate, low energy efficiency and the like in the existing CO 2 recycling technology, the invention provides a method for preparing a fiber toughening super-high-activity cementing material by solid waste and preparing a gel toughening super-early-strength cementing material by using residual slurry of a pipe pile based on the CO 2 mineralization principle and the three-phase medium collaborative grinding technology, which realizes the green low-cost, high-conversion rate and high-energy-efficiency conversion of CO 2, realizes the glue utilization of carbon dioxide for the production of the pipe pile, reduces the cement consumption, reduces the pipe pile curing temperature, improves the early mechanical property and durability of the pipe pile, simultaneously absorbs a large amount of solid waste and reduces the carbon emission.
In order to achieve the aim, the invention provides a method for preparing a multifunctional adhesive material by utilizing CO 2 in a pipe pile factory, which comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste, 18-566 parts of water and 0.59-3.33 parts of a first industrial auxiliary agent to obtain a first slurry,
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling on the first slurry in a first CO 2 -containing gas medium;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
And T1, mixing 100 parts of residual slurry of the tubular pile, 0-40 parts of cement and 1-2 parts of a second industrial auxiliary agent to obtain second slurry,
And T2, adding a next batch of second slurry after the preparation of one batch of products is finished by adopting a discontinuous feeding mode, performing second wet ball milling on the second slurry under a second CO 2 -containing gas medium to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2.
Further, the ball-to-material ratio of the first wet ball milling is 1:3-4, and the ball-to-material ratio of the second wet ball milling is 1:1-2;
The particle size of the fiber toughening ultra-high activity cementing material is smaller than 30 mu m, and the pH value is 7.6-9.8;
The particle size of the gel toughening super early strength type cementing material is smaller than 2 mu m, and the pH value is 6.3-6.8.
Further, the first industrial auxiliary agent comprises at least one of a crystal form regulator, a viscosity reducer, a chelating agent and a dissolution promoter;
the second industrial auxiliary agent comprises at least one of a neutralizer, a retarder, a chelating agent and a solvent.
It should be noted that, in order to regulate the mineralized crystal form of CO 2, a crystal form regulator must be added; in order to lower the pH of the second slurry, a neutralizing agent must be added. Other viscosity reducers, chelating agents, and solubilizing agents, retarders may be added according to the nature of the first/second slurry during the production process.
Further, the crystal form regulator comprises at least one of soluble magnesium salt, magnesium hydroxide, ammonia water and soluble aluminum salt;
the neutralizer comprises at least one of phosphoric acid, soluble phosphate, glycine and sulfamic acid.
In some embodiments of the present invention, the viscosity reducer may be at least one of sodium tripolyphosphate, sodium hexametaphosphate, aA-AM copolysodium salt anionic polyacrylate ammonium salt aqueous solution, and the like.
In some embodiments of the present invention, the chelating agent may be at least one of ethylenediamine tetraacetic acid, disodium ethylenediamine tetraacetate, phytic acid, and the like.
In some embodiments of the present invention, the solubilizing agent may be at least one of polyethylenimine, polypropylenimine, ammonium ethonitrate, and the like.
In some embodiments of the present invention, the retarder may be at least one of white sugar, biological sugar, sugar-containing peel, and the like.
Further, the air inlet temperature of the first CO 2 -containing air medium is 5-40 ℃, and the air inlet rate per unit mass is 5-15L/kg-min;
the air inlet temperature of the second CO 2 -containing air medium is 5-40 ℃, and the air inlet rate per unit mass is 15-30L/kg.min.
Further, the first CO 2 -containing gaseous medium has a CO 2 content of greater than 10% and the second CO 2 -containing gaseous medium has a CO 2 content of greater than 30%.
Further, the solid waste comprises at least one of steel slag, blast furnace slag, high-calcium fly ash, electric furnace slag, carbide slag, magnesium slag, biomass ash, cement kiln ash, municipal waste incineration ash and construction waste micro powder;
The total mass ratio of CaO, mgO and FeO in the solid waste is more than or equal to 10%;
The residual slurry of the pipe pile is generated in the pipe pile production process of a pipe pile factory, and the water content is 20-60%.
The invention also provides a system for preparing the multifunctional glue material by utilizing the CO 2 in the pipe pile factory, which comprises a gas-phase circulation module, a solid-phase homogenization module and a three-phase grinding module;
The gas-phase circulation module comprises a first CO 2 gas tank, a second CO 2 gas tank and a tail gas tank, wherein the first CO 2 gas tank is connected with the tail gas tank, and the first CO 2 gas tank and the second CO 2 gas tank are respectively used for providing a first gas medium containing CO 2 and a second gas medium containing CO 2;
the solid-phase homogenization module comprises a first stirring tank and a second stirring tank, wherein the first stirring tank is used for mixing solid waste, water and a first industrial auxiliary agent to obtain a first slurry, and the second stirring tank is used for mixing residual slurry of the pipe pile, cement and a second auxiliary agent to obtain a second slurry;
The three-phase grinding module comprises a first wet grinding machine and a second wet grinding machine, wherein the first wet grinding machine and the second wet grinding machine are provided with medium balls, the first wet grinding machine is used for performing first wet ball milling on the first slurry under a first CO 2 -containing gas medium to obtain a fiber toughening ultra-high-activity cementing material, and the second wet grinding machine is used for performing second wet ball milling on the second slurry under a CO 2 -containing gas medium to obtain a gel toughening ultra-early-strength cementing material;
The first wet mill comprises a cylinder body, a first feed inlet at the bottom of the cylinder body, a screen mesh in the cylinder body, a sealing operation table at the top of the cylinder body, and a motor in the sealing operation table, wherein the first feed inlet is connected with a first stirring tank, the screen mesh divides the inside of the cylinder body into a finished product bin on the screen mesh and a grinding bin below the screen mesh, the top of the sealing operation table is provided with a first air inlet, the first air inlet is provided with a gas pipeline, the gas pipeline is connected with a first CO 2 air tank, the output end of the motor is fixedly connected with a driving rotating rod, the driving rotating rod is fixedly connected with a hollow rotating shaft, the top end of the hollow rotating shaft is connected with the gas pipeline, the lower end of the hollow rotating shaft extends to the grinding bin, a first centrifugal blade and an air outlet which is uniformly distributed are arranged on the hollow rotating shaft of the grinding bin, the outside of the finished product bin is provided with a first discharge port, the first discharge port is connected with a gas-liquid separator, one end of the horizontal cyclone part is connected with the first discharge port, the other end of the horizontal cyclone part is connected with the vertical separation part through a pipeline which has an included angle with a horizontal line, a cyclone blade is also arranged inside the horizontal cyclone blade, the vertical separation part is provided with the vertical separation part, the conical separation part is provided with a liquid phase separation part is connected with a tail gas outlet at the position of the tail gas outlet, which is connected with the tail gas outlet in the place where the tail gas outlet is arranged;
The second wet grinding machine comprises a tank body, a second air inlet at the bottom of the tank body, a second discharge hole with one side of the tank body being inclined downwards, an air outlet with one side of the tank body being inclined upwards, a second feed inlet at the top of the tank body, a rotating bearing arranged at the top of the tank body and a stirring part extending into the tank body, wherein the stirring part comprises an electromagnetic rotator and a rotating rod, one end of the rotating rod is connected with the electromagnetic rotator, the other end of the rotating rod extends into the tank body through the rotating bearing, a second centrifugal blade is arranged on the rotating rod in the tank body, the second air inlet is connected with a second CO 2 air tank, and the second feed inlet is connected with a second stirring tank;
Wherein, the first wet mill adopts continuous grinding through lower feeding, upper discharging, and the second wet mill adopts upper feeding, lower discharging, and intermittent feeding.
Further, the system also comprises a multifunctional glue application module,
The multifunctional adhesive material application module comprises a stirrer and a centrifuge which are connected with each other, and also comprises an autoclave;
The stirrer is respectively connected with the first wet mill and the second wet mill;
The first feed inlet of the first wet grinding machine is also provided with a first filter screen and a first electronic valve;
the second feeding port of the second wet grinding machine is further provided with a second filter screen and a second electronic valve, the second air inlet is further provided with a third filter screen and a third electronic valve, the air outlet is further provided with a fourth filter screen and a fourth electronic valve, and the air outlet is connected with the autoclave so that hot tail gas containing CO 2 generated by the second wet grinding machine is used for autoclaved curing of the autoclave.
The invention also provides a tubular pile, which comprises, by mass, 66.6-118 parts of the fiber toughened ultra-high-activity cementing material and 157.5-562 parts of the gel toughened ultra-early-strength cementing material, 0-200 parts of cement, 0-200 parts of mineral admixture, 1150-1275 parts of stone, 620-770 parts of sand, 4.5-8.25 parts of an additive and 10-80 parts of mixing water;
The preparation method of the tubular pile comprises mixing, centrifuging and autoclaved curing, wherein the autoclaved curing comprises the steps of maintaining the temperature at 50-80 ℃ for 5-8 hours before demolding, and maintaining the temperature in CO 2 at 20-180 ℃ and the pressure at 0.1-1 MPa for 2-8 hours after demolding.
In some embodiments of the invention, the stone is crushed stone or crushed pebbles, and the maximum particle size should not be greater than 25mm.
In some embodiments of the invention, the fineness modulus of the sand is 2.5-3.5.
In some embodiments of the invention, the additive may be a water reducing agent, an antifreeze agent, a corrosion inhibitor, a pumping agent, or the like.
Compared with the prior art, the invention has the following beneficial effects:
1. Because CO 2 molecules are simple in structure, high in stability and high in inertness, efficient catalysts are needed to achieve effective conversion, and molecular charge centers are asymmetric, so that the active sites are difficult to capture in the reaction, the current conversion difficulty is high, the conversion cost is high, in addition, the catalysts are usually needed, the problems of low efficiency, poor stability, poor safety and high price exist in the catalysts, and the recycling utilization of CO 2 is limited. According to the invention, rapid carbon mineralization of the particle surface is promoted under the cooperation of H 2O-CO2, meanwhile, the surface hardness of the particles is reduced in a liquid phase environment, the particles are easier to refine under the high-speed collision of a grinding medium, as solid waste particles are continuously exposed from fresh surfaces, and the permeability and the reaction surface area can be increased due to mineral dissolution and reaction (crack generation), the reaction of CO 3 2- and Ca 2+ is not influenced by the reaction contact area, and finally the calcium carbonate is completely converted. No extra catalyst is needed in the whole process, and the method has the advantages of low energy consumption, high safety, high conversion efficiency and no toxic and harmful byproducts. When mineralized to form 1molCaCO 3 precipitate, 44g of CO 2 gas can be solidified, and the cement consumption for pipe pile production is reduced by 44g.
2. Three crystal forms were observed in the mineralization of CO 2, calcite, aragonite and spheronite, respectively. Aragonite is a metastable CaCO 3 crystalline form, generally acicular. The acicular aragonite whisker is a superfine fiber with the length of 10-30 mu m and the diameter of 0.5-3 mu m, and can improve the mechanical property and crack resistance of concrete due to lower production cost, and can be used for reinforcing cement-based materials. And when the pH value is 7.6-9.8, the crystal form regulator is adopted to inhibit the conversion of aragonite to calcite, and needle-shaped aragonite is stably generated by carbonizing solid waste, so that the fiber toughening ultra-high activity cementing material is obtained, the flexural strength and the tensile strength of the tubular pile concrete are improved, and the solid waste can be used as micro aggregate to fill pores after refining and activating, so that the durability is improved.
3. Under the synergistic effect of gas-phase CO 2, liquid-phase H 2 O and solid-phase medium, on one hand, the decomposition decalcification of mineral phases such as tricalcium silicate, dicalcium silicate, tricalcium aluminate and the like is realized through a neutralizer, and on the other hand, the free energy of gibbs in hydration reaction of C 3S 、C2 S and C 3 A is higher than the free energy of carbonization, which indicates that carbonization is easier to occur, and the amorphous phases such as silica gel and aluminum-silica gel are finally formed in the grinding process, so that the gel toughening super-early strength cementing material is obtained. The amorphous phases have higher pozzolanic activity, and can not only improve early-stage and later-stage strength of cement, but also have compact structure as a concrete admixture, thereby being beneficial to improving the durability of the tubular pile.
1/2C2S+2HCO3 -+2H2O→2CaCO3+H4SiO4+2OH-;
1/3C3S+3HCO3 -+2H2O→3CaCO3+H4SiO4+3OH-;
C3A+ HCO3 -+4H2O→CaCO3+C2AH8+ OH-。
4. Early strength of concrete can be improved by adopting early strength agents in pipe pile production, but each early strength agent has the following defects: the inorganic early strength agent has adverse effect on the durability of the concrete; the organic early strength agent has complex action mechanism and high price; the seed crystal early strength agent is complex to manufacture and has poor compatibility with materials. And steam curing at the too high temperature of the pipe pile can cause structural defects to concrete, so that the later strength is influenced, and the energy consumption is too high. Based on the residual slurry of the pipe pile and the solid waste, the CO 2 is utilized to form an industrial preparation process of the fiber toughening ultra-high activity cementing material and the gel toughening ultra-early strength cementing material, which is used for the production of the pipe pile, so that the full absorption of CO 2 is realized, the curing temperature of the pipe pile is reduced, the curing time is shortened, and compared with other CO 2 conversion and utilization technologies, the method has obvious economic benefits.
Drawings
Fig. 1 shows a schematic structural diagram of a system for preparing a multifunctional glue material by using CO 2 in a pipe pile factory according to the present invention;
FIG. 2 shows a schematic diagram of a first wet mill connection of the present invention;
FIG. 3 shows a schematic structural view of a first wet mill of the present invention;
FIG. 4 shows a schematic diagram of a second wet mill connection of the present invention;
FIG. 5 shows a schematic structural view of a second wet mill of the present invention;
reference numerals illustrate:
1000. A gas phase circulation module; 1001. a first CO 2 cylinder; 1002. a second CO 2 cylinder; 1003. a tail gas tank; 2000. a solid phase homogenization module; 2001. a first stirring tank; 2002. a second stirring tank; 3000. a three-phase grinding module; 3100. a first wet mill; 3101. a cylinder; 3102. a first feed port; 3103. a screen; 3104. a sealing operation table; 3105. a motor; 3106. a finished product bin; 3107. a grinding bin; 3108. a gas conduit; 3109. driving the rotating rod; 3110. a hollow rotating shaft; 3111. a first centrifugal blade; 3112. an air outlet; 3113. a first discharge port; 3114. a horizontal swirl member; 3115. a vertical separation member; 3116. swirl vanes; 3117. conical necking; 3118. a liquid phase outlet; 3119. a tail gas outlet; 3120. a first electronic valve; 3121. a first filter screen; 3200. a second wet mill; 3201. a tank body; 3202. a second air inlet; 3203. a second discharge port; 3204. an exhaust port; 3205. a second feed inlet; 3206. an electromagnetic rotator; 3207. a rotating rod; 3208. a second centrifugal blade; 3209. a second filter screen; 3210. a second electronic valve; 3211. a third filter screen; 3212. a third electronic valve; 3213. a fourth filter screen; 3214. a fourth electronic valve; 4000. a multifunctional glue application module; 4001. a stirrer; 4002. a centrifuge; 4003. and (5) an autoclave.
Detailed Description
The following description of specific embodiments of the present invention and the accompanying drawings will provide a clear and complete description of the technical solutions of embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, the embodiment provides a system for preparing a multifunctional glue material by using CO 2 in a pipe pile factory, which comprises a gas-phase circulation module 1000, a solid-phase homogenization module 2000, a three-phase grinding module 3000 and a multifunctional glue material application module 4000; referring to fig. 2 and 4, the gas phase circulation module 1000 includes a first CO 2 gas tank 1001, a second CO 2 gas tank 1002, and an off-gas tank 1003, wherein the first CO 2 gas tank 1001 is connected to the off-gas tank 1003, and the first CO 2 gas tank 1001 and the second CO 2 gas tank 1002 are respectively for providing a first CO 2 -containing gas medium and a second CO 2 -containing gas medium; referring to fig. 2 and 4, the solid phase homogenization module 2000 includes a first agitator tank 2001 for mixing solid waste, water and a first industrial aid to obtain a first slurry, and a second agitator tank 2002 for mixing residual slurry of pipe pile, cement and a second aid to obtain a second slurry.
Referring to fig. 2-5, the three-phase grinding module 3000 includes a first wet grinding machine 3100 and a second wet grinding machine 3200, where the first wet grinding machine 3100 and the second wet grinding machine 3200 both have medium balls, the first wet grinding machine 3100 is used for performing first wet grinding on the first slurry under a first gas medium containing CO 2 to obtain a fiber toughened ultra-high active cementing material, and the second wet grinding machine 3200 is used for performing second wet grinding on the second slurry under a second gas medium containing CO 2 to obtain a gel toughened ultra-high-strength cementing material. Referring to fig. 2 and 3, the first wet mill 3100 includes a cylinder 3101, a first feed port 3102 at the bottom of the cylinder 3101, a screen 3103 in the cylinder 3101, a sealing operation table 3104 at the top of the cylinder 3101, a motor 3105 in the sealing operation table 3104, the first feed port 3102 is connected with the first stirring tank 2001, the first feed port 3102 is further provided with a first filter screen 3121 and a first electronic valve 3120, the screen 3103 divides the inside of the cylinder 3101 into a finished product bin 3106 on the screen 3103 and a grinding bin 3107 under the screen 3103, a first air inlet is provided at the top of the sealing operation table 3104, a gas pipeline 3108 is provided at the first air inlet, the gas pipeline 3108 is connected with the first CO 2 gas tank 1001, the output end of the motor 3105 is connected with a driving rotary rod 3109, the driving rotary rod 3109 is fixedly connected with a hollow rotary shaft 3110, the top end of the hollow rotary shaft 3110 is connected with the gas pipeline 3108, the lower extreme of cavity pivot 3110 extends to grinding storehouse 3107, be equipped with first centrifugal blade 3111 and evenly distributed's gas outlet 3112 on grinding storehouse 3107's cavity pivot 3110, the outside of finished product storehouse 3106 is provided with first discharge gate 3113, first discharge gate 3113 connects gas-liquid separator, gas-liquid separator includes horizontal swirl part 3114 and vertical separation part 3115, horizontal swirl part 3114 one end is connected with first discharge gate 3113, the horizontal swirl part 3114 other end is connected with vertical separation part 3115 through the pipeline that exists the contained angle with the horizontal line, horizontal swirl part 3114 is inside still to be provided with swirl vane 3116, vertical separation part 3115's inside is provided with toper throat 3117, vertical separation part 3115's lower extreme mouth is liquid phase outlet 3118, vertical separation part 3115 still is provided with tail gas outlet 3119 in the top that there is the pipe connection of contained angle, tail gas outlet 3119 is connected with tail gas tank 1003. Referring to fig. 4 and 5, the second wet mill 3200 includes a tank 3201, a second air inlet 3202 at the bottom of the tank 3201, a second outlet 3203 with one side of the tank 3201 being inclined downward, an exhaust port 3204 with one side of the tank 3201 being inclined upward, a second inlet 3205 at the top of the tank 3201, a rotating bearing provided at the top of the tank 3201, and a stirring component extending into the tank 3201, wherein the stirring component includes an electromagnetic rotator 3206 and a rotating rod 3207, one end of the rotating rod 3207 is connected with the electromagnetic rotator 3206, the other end extends into the tank 3201 through the rotating bearing, a second centrifugal blade 3208 is provided on the rotating rod 3207 inside the tank 3201, the second air inlet 3202 is connected with the second CO 2 air tank 1002, the second inlet 3205 is connected with the second stirring tank 2002, the second inlet 3205 is further provided with a second filter screen 3209 and a second electronic valve 3210, the second air inlet 3202 is further provided with a third filter screen 3211 and a third electronic valve 3212, and the exhaust port 4 is further provided with a fourth filter screen 3213 and a fourth electronic valve 3214. Referring to fig. 2 and 4, the multifunctional glue application module 4000 includes a stirrer 4001 and a centrifuge 4002 which are connected with each other, and further includes an autoclave 4003, wherein the stirrer 4001 is respectively connected with the first wet mill 3100 and the second wet mill 3200, and is used for stirring and mixing the fiber toughened ultra-high activity cementing material prepared by the first wet mill 3100 and the gel toughened ultra-early strength cementing material prepared by the second wet mill 3200, and the centrifuge 4002 is used for further centrifugation, and the material coming out from the centrifuge 4002 can be used for preparing concrete pipe piles. Referring to fig. 4, an exhaust port 3204 of the second wet mill 3200 is connected to the autoclave 4003 for curing concrete materials in the autoclave 4003 using CO 2 tail gas generated by the second wet milling of the second wet mill 3200. Wherein, the first wet mill adopts continuous grinding through lower feeding, upper discharging, and the second wet mill adopts upper feeding, lower discharging, and intermittent feeding.
In this embodiment, the first CO 2 gas tank 1001 and the second CO 2 gas tank 1002 can both compress air to prepare CO 2, or can be connected with a CO 2 gas tank to directly use the gas containing CO 2 stored in the CO 2 gas tank. However, it is desirable to ensure that the first CO 2 -containing gaseous medium is provided with a CO 2 content of greater than 10% and the second CO 2 -containing gaseous medium has a CO 2 content of greater than 30%. The fiber toughened ultra-high activity cementitious material and the toughened ultra-early strength cementitious material used in the following examples were prepared using the first wet mill 3100 and the second wet mill 3200 of the system for preparing a multifunctional cementitious material using CO 2 of example 1, respectively, with a CO 2 content of 20% in the first CO 2 -containing gas medium and a CO 2 content of 40% in the second CO 2 -containing gas medium. The particle size of the fiber toughening super-high-activity cementing material is smaller than 30 mu m, the pH value is 7.6-9.8, and the particle size of the gel toughening super-early-strength cementing material is smaller than 2 mu m, and the pH value is 6.3-6.8. And, further use the multi-functional glue material application module 4000 preparation tubular column of multi-functional glue material, CO 2 during the autoclaved curing is provided by the hot tail gas that contains CO 2 that produces when carrying out the second wet ball-milling of second wet mill 3200, and CaO, mgO and FeO's total mass ratio is 10% in the solid waste, and stone adopts rubble or broken pebble, and maximum particle diameter is not more than 25mm, and the fineness modulus of sand is 2.5~3.5, and these contents will not be repeated.
Example 2
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste (steel slag), 18 parts of water and 3.33 parts of a first industrial auxiliary agent (a crystal form regulator, a viscosity reducer, a chelating agent and a cosolvent according to a mass ratio of 5:0.4:0.3:0.3), wherein the crystal form regulator is magnesium hydroxide, the viscosity reducer is sodium hexametaphosphate, the chelating agent is ethylenediamine tetraacetic acid and the cosolvent is polyethyleneimine) uniformly to obtain a first slurry;
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling (ball-to-material ratio is 1:4) on the first slurry under a first CO 2 -containing gas medium with an air inlet temperature of 40 ℃ and an air inlet rate of 15L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
T1, uniformly mixing 100 parts of tubular pile residual slurry (with the water content of 60 percent) and 1 part of a second industrial auxiliary agent (neutralizer, phosphoric acid) to obtain second slurry;
T2, adding a next batch of second slurry after the preparation of one batch of products is finished by adopting an intermittent feeding mode, performing second wet ball milling (ball material ratio of 1:2) on a second CO 2 -containing gas medium with the air inlet temperature of 40 ℃ and the air inlet rate of 15L/kg-min per unit mass to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2;
X1, uniformly stirring and mixing 118 parts of fiber toughening ultra-high-activity cementing material, 157.5 parts of gel toughening ultra-early-strength cementing material, 200 parts of cement, 100 parts of mineral admixture, 1200 parts of stone, 770 parts of sand, 70 parts of water and 8.25 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 50 ℃ for curing for 7 hours, demolding, and maintaining the hot tail gas containing CO 2 recovered in the step T2 at the temperature of 100 ℃ and the pressure of 1MPa for 6 hours to obtain the pipe pile.
Example 3
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, uniformly mixing 100 parts of solid waste (formed by mixing steel slag and blast furnace slag), 566 parts of water and 0.59 part of a first industrial auxiliary agent (a crystal form regulator, a soluble magnesium salt) to obtain a first slurry;
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling (ball-to-material ratio is 1:3) on the first slurry under a first CO 2 -containing gas medium with an air inlet temperature of 35 ℃ and an air inlet rate of 5L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
T1, uniformly mixing 100 parts of tubular pile residual slurry (with the water content of 60 percent) and 1 part of a second industrial auxiliary agent (neutralizer, soluble phosphate) to obtain a second slurry;
T2, adopting a discontinuous feeding mode, adding a next batch of second slurry after the preparation of one batch of products is finished, performing second wet ball milling (ball material ratio of 1:2) on the second slurry under a second CO 2 -containing gas medium with an air inlet temperature of 35 ℃ and an air inlet rate of 15L/kg-min per unit mass to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2;
X1, uniformly stirring and mixing 66.6 parts of fiber toughened ultra-high-activity cementing material, 157.5 parts of gel toughened ultra-early-strength cementing material, 200 parts of cement, 200 parts of mineral admixture, 1275 parts of stone, 650 parts of sand, 25 parts of water and 4.5 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 80 ℃ for curing for 6 hours, demolding, and maintaining the pipe pile at 180 ℃ and 1MPa for 6 hours under the hot tail gas containing CO 2 recovered in the step T2.
Example 4
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, uniformly mixing 100 parts of solid waste (steel slag, blast furnace slag and high-calcium fly ash), 50 parts of water and 1.1 part of a first industrial auxiliary agent (a crystal form regulator and a viscosity reducer are mixed according to a mass ratio of 5:1, wherein the crystal form regulator is formed by mixing a soluble magnesium salt and ammonia water according to a mass ratio of 2:1, and the viscosity reducer is sodium tripolyphosphate) to obtain a first slurry;
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling (ball-to-material ratio of 1:4) on the first slurry under a first CO 2 -containing gas medium with an air inlet temperature of 30 ℃ and an air inlet rate of 10L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
T1, uniformly mixing 100 parts of tubular pile residual slurry (with the water content of 60 percent) and 1 part of a second industrial auxiliary agent (neutralizer, glycine) to obtain a second slurry;
t2, adopting a discontinuous feeding mode, adding a next batch of second slurry after the preparation of one batch of products is finished, performing second wet ball milling (ball material ratio of 1:2) on the second slurry under a second CO 2 -containing gas medium with an air inlet temperature of 30 ℃ and an air inlet rate of 15L/kg-min per unit mass to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2;
X1, uniformly stirring and mixing 118 parts of fiber toughening ultra-high-activity cementing material, 157.5 parts of gel toughening ultra-early-strength cementing material, 200 parts of cement, 120 parts of mineral admixture, 1220 parts of stone, 740 parts of sand, 50 parts of water and 7.6 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 65 ℃ for curing for 7 hours, demolding, and maintaining the pipe pile at 150 ℃ and 1MPa for 6 hours under the hot tail gas containing CO 2 recovered in the step T2.
Example 5
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste (steel slag, blast furnace slag, high-calcium fly ash, electric furnace slag, carbide slag, magnesium slag, biomass ash and cement kiln ash), 200 parts of water and 1.8 parts of a first industrial auxiliary agent (a crystal form regulator, a viscosity reducer and a chelating agent are mixed according to a mass ratio of 5:0.3:0.7, wherein the crystal form regulator is formed by mixing magnesium hydroxide, ammonia water and soluble aluminum salt according to a mass ratio of 2:1:1, the viscosity reducer is formed by mixing sodium tripolyphosphate and sodium hexametaphosphate according to a mass ratio of 1:1, and the chelating agent is formed by mixing disodium ethylenediamine tetraacetate and phytic acid according to a mass ratio of 1:1) uniformly to obtain a first slurry;
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling (ball-to-material ratio of 1:4) on the first slurry under a first CO 2 -containing gas medium with an air inlet temperature of 25 ℃ and an air inlet rate of 10L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
t1, uniformly mixing 100 parts of tubular pile residual slurry (with the water content of 60 percent) and 1 part of a second industrial auxiliary agent (a neutralizing agent which is formed by mixing phosphoric acid and soluble phosphate in a mass ratio of 1:3) to obtain second slurry;
t2, adopting a discontinuous feeding mode, adding a next batch of second slurry after the preparation of one batch of products is finished, performing second wet ball milling (ball material ratio of 1:2) on the second slurry under a second CO 2 -containing gas medium with an air inlet temperature of 40 ℃ and an air inlet rate of 15L/kg-min per unit mass to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2;
X1, uniformly stirring and mixing 118 parts of fiber toughening ultra-high-activity cementing material, 157.5 parts of gel toughening ultra-early-strength cementing material, 200 parts of cement, 160 parts of mineral admixture, 1235 parts of stone, 710 parts of sand, 10 parts of water and 6.2 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mould, transferring the pipe pile into a steam curing pool at 70 ℃ for curing for 7 hours, demoulding, and maintaining the pipe pile at 180 ℃ and 0.5MPa for 6 hours under the hot tail gas containing CO 2 recovered in the step T2.
Example 6
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste (steel slag, blast furnace slag, high-calcium fly ash, electric furnace slag, carbide slag, magnesium slag, biomass ash, cement kiln ash, municipal waste incineration ash and construction waste micro powder), 400 parts of water and 2.5 parts of a first industrial auxiliary agent (a crystal form regulator, a viscosity reducer, a chelating agent and a cosolvent according to a mass ratio of 5:0.5:0.3:0.2, wherein the crystal form regulator is formed by mixing magnesium hydroxide, ammonia water and soluble aluminum salt according to a mass ratio of 1:1:1, the viscosity reducer is an AA-AM copolymerized sodium salt anionic ammonium polyacrylate salt aqueous solution, the chelating agent is disodium ethylenediamine tetraacetate and the cosolvent is ammonium nitrate ethanol ammonium), and uniformly mixing to obtain a first slurry;
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling (ball-to-material ratio of 1:3.5) on the first slurry under a first CO 2 -containing gas medium with an air inlet temperature of 25 ℃ and an air inlet rate of 15L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
t1, uniformly mixing 100 parts of tubular pile residual slurry (with water content of 60 percent) and 1 part of a second industrial auxiliary agent (a neutralizing agent which is formed by mixing phosphoric acid, soluble phosphate and glycine according to a mass ratio of 1:3:1) to obtain a second slurry;
T2, adopting a discontinuous feeding mode, adding a next batch of second slurry after the preparation of one batch of products is finished, performing second wet ball milling (ball material ratio of 1:2) on the second slurry at a second temperature of 25 ℃ under a second CO 2 -containing gas medium with a unit mass air inlet rate of 15L/kg-min to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2;
X1, uniformly stirring and mixing 100 parts of fiber toughening ultra-high-activity cementing material, 157.5 parts of gel toughening ultra-early-strength cementing material, 200 parts of cement, 180 parts of mineral admixture, 1250 parts of stone, 680 parts of sand, 10 parts of water and 5.3 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 80 ℃ for curing for 7 hours, demolding, and maintaining the pipe pile at 180 ℃ and 1MPa for 6 hours under the hot tail gas containing CO 2 recovered in the step T2.
Example 7
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste (steel slag, blast furnace slag, high-calcium fly ash, electric furnace slag, carbide slag, magnesium slag, biomass ash, cement kiln ash, municipal waste incineration ash and construction waste micro powder), 18 parts of water and 3.33 parts of a first industrial auxiliary agent (a crystal form regulator, a viscosity reducer, a chelating agent and a cosolvent according to a mass ratio of 5:0.6:0.2:0.2), wherein the crystal form regulator is formed by mixing a soluble magnesium salt and ammonia water according to a mass ratio of 1:3, the viscosity reducer is sodium hexametaphosphate, the chelating agent is ethylenediamine tetraacetic acid, and the cosolvent is polypropylene imine), and uniformly mixing to obtain a first slurry;
s2, continuously adding a first slurry in a continuous feeding mode, and performing a first wet ball milling (ball-to-material ratio of 1:4) under a first CO 2 -containing gas medium consisting of CO 2 with an air inlet temperature of 20 ℃ and an air inlet rate of 15L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
t1, uniformly mixing 100 parts of tubular pile residual slurry (the water content is 20%), and 1.2 parts of a second industrial auxiliary agent (a neutralizer, which is formed by mixing glycine and sulfamic acid in a mass ratio of 1:2) to obtain a second slurry;
T2, adopting a discontinuous feeding mode, adding a next batch of second slurry after the preparation of one batch of products is finished, performing second wet ball milling (ball material ratio of 1:2) on the second slurry under a second CO 2 -containing gas medium with the air inlet temperature of 20 ℃ and the air inlet rate of 20L/kg-min per unit mass to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2;
X1, uniformly stirring and mixing 118 parts of fiber toughening ultra-high-activity cementing material, 187.5 parts of gel toughening ultra-early-strength cementing material, 100 parts of cement, 200 parts of mineral admixture, 1150 parts of stone, 620 parts of sand, 80 parts of water and 8.25 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 50 ℃ for curing for 7 hours, demolding, and maintaining the pipe pile at the temperature of 100 ℃ and the pressure of 0.5MPa for 4 hours under the hot tail gas containing CO 2 recovered in the step T2.
Example 8
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste (steel slag, blast furnace slag, high-calcium fly ash, electric furnace slag, carbide slag, magnesium slag, biomass ash, cement kiln ash, municipal waste incineration ash and construction waste micro powder), 18 parts of water and 3.33 parts of a first industrial auxiliary agent (a crystal form regulator, a viscosity reducer, a chelating agent and a dissolution promoter in a mass ratio of 5:0.7:0.1:0.2, wherein the crystal form regulator is formed by mixing soluble magnesium salt and ammonia water in a mass ratio of 1:2, the viscosity reducer is sodium tripolyphosphate, the chelating agent is phytic acid, and the dissolution promoter is ammonium ethanol nitrate), and uniformly obtaining a first slurry;
S2, continuously adding a first slurry in a continuous feeding mode, and performing a first wet ball milling (ball-to-material ratio of 1:4) under a first CO 2 -containing gas medium consisting of CO 2 with an air inlet temperature of 15 ℃ and an air inlet rate of 15L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
T1, mixing 100 parts of tubular pile residual slurry (water content 30%), 10 parts of cement and 1.4 parts of a second industrial auxiliary agent (neutralizing agent, retarder and chelating agent in a mass ratio of 10:0.6:0.4), wherein the neutralizing agent is formed by mixing glycine and sulfamic acid in a mass ratio of 1:2, the retarder is white sugar, and the chelating agent is disodium ethylenediamine tetraacetate) uniformly to obtain a second slurry;
t2, adopting an intermittent feeding mode, adding next batch of second slurry after the preparation of one batch of products is finished, and performing second wet ball milling (ball-to-material ratio of 1:1) on the second slurry under a second CO 2 -containing gas medium with an air inlet temperature of 15 ℃ and an air inlet rate of 25L/kg-min per unit mass to obtain a gel toughening super-early-strength cementing material;
X1, uniformly stirring and mixing 118 parts of fiber toughening ultra-high-activity cementing material, 312.5 parts of gel toughening ultra-early-strength cementing material, 100 parts of cement, 100 parts of mineral admixture, 1150 parts of stone, 620 parts of sand, 57 parts of water and 8.25 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 50 ℃ for curing for 7 hours, demolding, and maintaining the pipe pile at the temperature of 100 ℃ and the pressure of 0.3MPa for 4 hours under the hot tail gas containing CO 2 recovered in the step T2.
Example 9
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste (steel slag, blast furnace slag, high-calcium fly ash, electric furnace slag, carbide slag, magnesium slag, biomass ash, cement kiln ash, municipal waste incineration ash and construction waste micro powder), 18 parts of water and 3.33 parts of a first industrial auxiliary agent (a crystal form regulator, a viscosity reducer, a chelating agent and a cosolvent according to a mass ratio of 5:0.8:0.1:0.1), wherein the crystal form regulator is formed by mixing a soluble magnesium salt and ammonia water according to a mass ratio of 3:1, the viscosity reducer is sodium tripolyphosphate, the chelating agent is phytic acid, and the cosolvent is ammonium nitrate ethanol ammonium), and uniformly mixing to obtain a first slurry;
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling (ball-to-material ratio is 1:4) on the first slurry under a first CO 2 -containing gas medium with an air inlet temperature of 10 ℃ and an air inlet rate of 15L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
T1, mixing 100 parts of tubular pile residual slurry (water content 40%), 20 parts of cement and 2 parts of a second industrial auxiliary agent (neutralizing agent, retarder, chelating agent and cosolvent according to a mass ratio of 10:0.7:0.15:0.15), wherein the neutralizing agent is formed by mixing glycine and sulfamic acid according to a mass ratio of 5:1, the retarder is formed by mixing white sugar and biological sugar according to a mass ratio of 6:1, the chelating agent is formed by mixing ethylenediamine tetraacetic acid and phytic acid according to a mass ratio of 3:5, and the cosolvent is ammonium ethoxide nitrate) uniformly to obtain a second slurry;
t2, adopting an intermittent feeding mode, adding next batch of second slurry after the preparation of one batch of products is finished, and performing second wet ball milling (ball-to-material ratio of 1:1) on the second slurry under a second CO 2 -containing gas medium with an air inlet temperature of 10 ℃ and an air inlet rate of 30L/kg-min per unit mass to obtain a gel toughening super-early-strength cementing material;
X1, uniformly stirring and mixing 118 parts of fiber toughening ultra-high-activity cementing material, 437.5 parts of gel toughening ultra-early-strength cementing material, 100 parts of cement, 1150 parts of stone, 620 parts of sand, 32 parts of water and 8.25 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 50 ℃ for curing for 7 hours, demolding, and maintaining the pipe pile at the temperature of 100 ℃ and the pressure of 0.1MPa for 4 hours under the hot tail gas containing CO 2 recovered in the step T2.
Example 10
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste (steel slag, blast furnace slag, high-calcium fly ash, electric furnace slag, carbide slag, magnesium slag, biomass ash, cement kiln ash, municipal waste incineration ash and construction waste micro powder), 18 parts of water and 3.33 parts of a first industrial auxiliary agent (a crystal form regulator, a viscosity reducer, a chelating agent and a cosolvent according to a mass ratio of 5:0.7:0.15:0.15), wherein the crystal form regulator is formed by mixing a soluble magnesium salt and ammonia water according to a mass ratio of 5:1, the viscosity reducer is sodium tripolyphosphate, the chelating agent is phytic acid, and the cosolvent is ammonium nitrate ethanol ammonium), and uniformly mixing to obtain a first slurry;
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling (ball-to-material ratio of 1:4) on the first slurry under a first CO 2 -containing gas medium with an air inlet temperature of 5 ℃ and an air inlet rate of 15L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
T1, mixing 100 parts of tubular pile residual slurry (water content 50%), 30 parts of cement and 1 part of a second industrial auxiliary agent (a neutralizing agent, a retarder, a chelating agent and a cosolvent in a mass ratio of 10:0.4:0.3:0.3), wherein the neutralizing agent is formed by mixing glycine and sulfamic acid in a mass ratio of 8:1, the retarder is formed by mixing white sugar and biological sugar in a mass ratio of 3:2, the chelating agent is formed by mixing ethylenediamine tetraacetic acid and phytic acid in a mass ratio of 3:2, and the cosolvent is formed by mixing ammonium nitrate ethoxide and polypropylene imine in a mass ratio of 1:1) uniformly to obtain a second slurry;
T2, adopting a discontinuous feeding mode, adding the next batch of second slurry after the preparation of one batch of products is finished, and performing second wet ball milling (ball material ratio 1:1) on the second slurry under the CO 2 atmosphere formed by CO 2 with the air inlet temperature of 5 ℃ and the air inlet rate of 30L/kg-min per unit mass to obtain the gel toughening super-early-strength cementing material;
X1, uniformly stirring and mixing 118 parts of fiber toughening ultra-high-activity cementing material, 562 parts of gel toughening ultra-early-strength cementing material, 1150 parts of stone, 620 parts of sand, 10 parts of water and 8.25 parts of additive, and centrifuging;
X2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 50 ℃ for curing for 7 hours, demolding, and maintaining the pipe pile at 180 ℃ and 1MPa for 6 hours under the hot tail gas containing CO 2 recovered in the step T2.
Example 11
The preparation method of the tubular pile comprises the following steps in parts by mass,
S1, mixing 100 parts of solid waste (steel slag, blast furnace slag, high-calcium fly ash, electric furnace slag, carbide slag, magnesium slag, biomass ash, cement kiln ash, municipal waste incineration ash and construction waste micro powder), 18 parts of water and 3.33 parts of a first industrial auxiliary agent (a crystal form regulator, a viscosity reducer, a chelating agent and a cosolvent according to a mass ratio of 5:0.6:0.2:0.2), wherein the crystal form regulator is formed by mixing a soluble magnesium salt and ammonia water according to a mass ratio of 3:5, the viscosity reducer is sodium tripolyphosphate, the chelating agent is phytic acid, and the cosolvent is ammonium nitrate ethanol ammonium), and uniformly mixing to obtain a first slurry;
S2, continuously adding first slurry in a continuous feeding mode, and performing first wet ball milling (ball-to-material ratio of 1:4) on the first slurry under a first CO 2 -containing gas medium with an air inlet temperature of 5 ℃ and an air inlet rate of 15L/kg-min per unit mass;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
T1, mixing 100 parts of tubular pile residual slurry (water content 60%), 40 parts of cement and 1 part of a second industrial auxiliary agent (a neutralizing agent, a retarder, a chelating agent and a cosolvent in a mass ratio of 10:0.5:0.25:0.25), wherein the neutralizing agent is formed by mixing glycine and sulfamic acid in a mass ratio of 2:3, the retarder is formed by mixing white sugar and sugar-containing peel in a mass ratio of 5:2, the chelating agent is formed by mixing ethylenediamine tetraacetic acid and phytic acid in a mass ratio of 3:4, and the cosolvent is formed by mixing ammonium nitrate and polypropylene imine in a mass ratio of 1:3) uniformly to obtain a second slurry;
T2, adopting a discontinuous feeding mode, adding the next batch of second slurry after the preparation of one batch of products is finished, and performing second wet ball milling (ball material ratio is 1:1) under a second CO 2 -containing gas medium consisting of CO 2 with a unit mass air inlet rate of 30L/kg-min at the temperature of 5 ℃ to obtain the gel toughening super-early-strength cementing material;
X1, uniformly stirring and mixing 118 parts of fiber toughening ultra-high-activity cementing material, 562 parts of gel toughening ultra-early-strength cementing material, 1150 parts of stone, 620 parts of sand, 10 parts of water and 8.25 parts of additive, and centrifuging;
x2, then filling the pipe pile into a mold, transferring the pipe pile into a steam curing pool at 50 ℃ for curing for 7 hours, demolding, and maintaining the pipe pile for 8 hours under the condition of the hot tail gas containing CO 2 and recovered in the step T2 and the pressure of 0.1 MPa.
The carbon emission coefficient of the cement is 0.86kg/t, and the carbon emission coefficient of the solid waste is not calculated. Example 9 the carbon fixation amount of the fiber toughened ultra-high activity cementing material and the gel toughened ultra-early strength cementing material is 44kg/t, and the energy consumption value of unit tubular pile products is reduced to 21.3kg of standard coal/m 3; in the embodiment 10, the carbon fixation amount of the fiber toughening ultra-high activity cementing material and the gel toughening ultra-early strength cementing material is 36kg/t, and the energy consumption value of unit tubular pile products is reduced to 30.1kg of standard coal/m 3; in the embodiment 11, the carbon fixation amount of the fiber toughening ultra-high activity cementing material and the gel toughening ultra-early strength cementing material is 28kg/t, and the energy consumption value of unit tubular pile products is reduced to 14.7kg of standard coal/m 3. According to the conventional production method, the energy consumption value of the unit tubular pile product is 38.8kg of standard coal/m 3. Meanwhile, the strength of the pipe piles prepared in the embodiments 9 to 11 is substantially equal to that of the pipe piles in the market. These results show that the invention solidifies CO 2 gas in the preparation process of the fiber-toughened ultra-high activity cementing material and the gel-toughened ultra-early strength cementing material, thereby realizing the gelling utilization of CO 2.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The system for preparing the multifunctional glue material by utilizing the CO 2 in the pipe pile factory is characterized by comprising a gas-phase circulation module, a solid-phase homogenization module and a three-phase grinding module;
The gas-phase circulation module comprises a first CO 2 gas tank, a second CO 2 gas tank and a tail gas tank, wherein the first CO 2 gas tank is connected with the tail gas tank, and the first CO 2 gas tank and the second CO 2 gas tank are respectively used for providing a first gas medium containing CO 2 and a second gas medium containing CO 2;
The solid-phase homogenization module comprises a first stirring tank and a second stirring tank, wherein the first stirring tank is used for mixing solid waste, water and a first industrial auxiliary agent to obtain a first slurry, and the second stirring tank is used for mixing residual slurry of the pipe pile, cement and a second industrial auxiliary agent to obtain a second slurry;
the first industrial auxiliary agent comprises at least one of a crystal form regulator, a viscosity reducer, a chelating agent and a solvent promoter; the second industrial auxiliary agent comprises at least one of a neutralizer, a retarder, a chelating agent and a solvent promoter;
The three-phase grinding module comprises a first wet grinding machine and a second wet grinding machine, wherein the first wet grinding machine and the second wet grinding machine are provided with medium balls, the first wet grinding machine is used for performing first wet ball milling on the first slurry under a first CO 2 -containing gas medium to obtain a fiber toughening ultra-high-activity cementing material, and the second wet grinding machine is used for performing second wet ball milling on the second slurry under a second CO 2 -containing gas medium to obtain a gel toughening ultra-high-strength cementing material;
The first wet mill comprises a cylinder body, a first feed inlet at the bottom of the cylinder body, a screen mesh in the cylinder body, a sealing operation table at the top of the cylinder body, and a motor in the sealing operation table, wherein the first feed inlet is connected with a first stirring tank, the screen mesh divides the inside of the cylinder body into a finished product bin on the screen mesh and a grinding bin below the screen mesh, the top of the sealing operation table is provided with a first air inlet, the first air inlet is provided with a gas pipeline, the gas pipeline is connected with a first CO 2 air tank, the output end of the motor is fixedly connected with a driving rotating rod, the driving rotating rod is fixedly connected with a hollow rotating shaft, the top end of the hollow rotating shaft is connected with the gas pipeline, the lower end of the hollow rotating shaft extends to the grinding bin, a first centrifugal blade and an air outlet which is uniformly distributed are arranged on the hollow rotating shaft of the grinding bin, the outside of the finished product bin is provided with a first discharge port, the first discharge port is connected with a gas-liquid separator, one end of the horizontal cyclone part is connected with the first discharge port, the other end of the horizontal cyclone part is connected with the vertical separation part through a pipeline which has an included angle with a horizontal line, a cyclone blade is also arranged inside the horizontal cyclone blade, the vertical separation part is provided with the vertical separation part, the conical separation part is provided with a liquid phase separation part is connected with a tail gas outlet at the position of the tail gas outlet, which is connected with the tail gas outlet in the place where the tail gas outlet is arranged;
The second wet grinding machine comprises a tank body, a second air inlet at the bottom of the tank body, a second discharge hole with one side of the tank body being inclined downwards, an air outlet with one side of the tank body being inclined upwards, a second feed inlet at the top of the tank body, a rotating bearing arranged at the top of the tank body and a stirring part extending into the tank body, wherein the stirring part comprises an electromagnetic rotator and a rotating rod, one end of the rotating rod is connected with the electromagnetic rotator, the other end of the rotating rod extends into the tank body through the rotating bearing, a second centrifugal blade is arranged on the rotating rod in the tank body, the second air inlet is connected with a second CO 2 air tank, and the second feed inlet is connected with a second stirring tank;
wherein, first wet mill adopts down feeding, goes up the ejection of compact, and continuous feeding's mode incessantly grinds, and second wet mill adopts last feeding, goes down ejection of compact, and intermittent feeding's mode seals and grinds.
2. The system for preparing the multifunctional glue material by utilizing the CO 2 in the pipe pile factory according to claim 1, further comprising a multifunctional glue material application module,
The multifunctional adhesive material application module comprises a stirrer and a centrifuge which are connected with each other, and also comprises an autoclave;
The stirrer is respectively connected with the first wet mill and the second wet mill;
The first feed inlet of the first wet grinding machine is also provided with a first filter screen and a first electronic valve;
the second feeding port of the second wet grinding machine is further provided with a second filter screen and a second electronic valve, the second air inlet is further provided with a third filter screen and a third electronic valve, the air outlet is further provided with a fourth filter screen and a fourth electronic valve, and the air outlet is connected with the autoclave so that hot tail gas containing CO 2 generated by the second wet grinding machine is used for autoclaved curing of the autoclave.
3. A method for preparing a multifunctional adhesive by using the system for preparing the multifunctional adhesive by using CO 2 in a tubular pile factory according to claim 1 or 2 is characterized by comprising the following steps of, in parts by mass,
S1, mixing 100 parts of solid waste, 18-566 parts of water and 0.59-3.33 parts of a first industrial auxiliary agent according to a first stirring tank to obtain first slurry,
S2, continuously adding first slurry according to a first wet grinding machine in a continuous feeding mode, and performing first wet ball grinding on the first slurry in a first CO 2 -containing gas medium;
S3, recycling tail gas containing CO 2 generated in the step S2 as a first gas medium containing CO 2 in the next batch, ensuring that the content of CO 2 in the first gas medium containing CO 2 in the next batch is higher than 5%, and repeating the step S2 to obtain the fiber toughening ultra-high activity cementing material;
And, a step of, in the first embodiment,
T1, mixing 100 parts of tubular pile residual slurry, 0-40 parts of cement and 1-2 parts of a second industrial auxiliary agent according to a second stirring tank to obtain second slurry,
T2, adding a next batch of second slurry after the preparation of one batch of products is finished according to a second wet mill in a discontinuous feeding mode, performing second wet ball milling on the second slurry under a second CO 2 -containing gas medium to obtain a gel toughening super-early-strength cementing material, and recovering generated hot tail gas containing CO 2;
wherein, the first wet mill adopts lower feeding, upper discharging and continuous feeding modes for uninterrupted grinding, and the second wet mill adopts upper feeding, lower discharging and intermittent feeding modes for closed grinding;
The residual slurry of the pipe pile is generated in the pipe pile production process of a pipe pile factory, and the water content is 20-60%;
The first industrial auxiliary comprises at least a crystal form regulator; the second industrial aid comprises at least a neutralizing agent.
4. The method for preparing the multifunctional glue material according to claim 3, wherein the ball-to-material ratio of the first wet ball mill is 1 (3-4), and the ball-to-material ratio of the second wet ball mill is 1 (1-2);
The particle size of the fiber toughening ultra-high activity cementing material is smaller than 30 mu m, and the pH value is 7.6-9.8;
The particle size of the gel toughening super early strength type cementing material is smaller than 2 mu m, and the pH value is 6.3-6.8.
5. The method for preparing a multifunctional glue according to claim 3, wherein the crystal form regulator comprises at least one of soluble magnesium salt, magnesium hydroxide, ammonia water and soluble aluminum salt;
the neutralizer comprises at least one of phosphoric acid, soluble phosphate, glycine and sulfamic acid.
6. The method for preparing the multifunctional glue material according to claim 3, wherein the air inlet temperature of the first CO 2 -containing air medium is 5-40 ℃ and the air inlet rate per unit mass is 5-15L/kg-min;
the air inlet temperature of the second CO 2 -containing air medium is 5-40 ℃, and the air inlet rate per unit mass is 15-30L/kg.min.
7. The method of claim 6, wherein the first CO 2 -containing gaseous medium has a CO 2 content of greater than 10% and the second CO 2 -containing gaseous medium has a CO 2 content of greater than 30%.
8. The method for preparing a multifunctional glue material according to claim 3, wherein the solid waste comprises at least one of steel slag, high-calcium fly ash, carbide slag, magnesium slag, biomass ash, cement kiln ash, municipal waste incineration ash and construction waste micro powder;
the total mass ratio of CaO, mgO and FeO in the solid waste is more than or equal to 10 percent.
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