CN114699890B - System and method for adsorbing and solidifying carbon dioxide by industrial sludge - Google Patents
System and method for adsorbing and solidifying carbon dioxide by industrial sludge Download PDFInfo
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- CN114699890B CN114699890B CN202210232454.6A CN202210232454A CN114699890B CN 114699890 B CN114699890 B CN 114699890B CN 202210232454 A CN202210232454 A CN 202210232454A CN 114699890 B CN114699890 B CN 114699890B
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- 239000010802 sludge Substances 0.000 title claims abstract description 266
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 222
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 111
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 64
- 239000002912 waste gas Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 46
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 25
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 23
- 239000010842 industrial wastewater Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 27
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 24
- 239000006228 supernatant Substances 0.000 claims description 23
- 239000002351 wastewater Substances 0.000 claims description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 12
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 10
- 239000000920 calcium hydroxide Substances 0.000 claims description 10
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 6
- 239000001095 magnesium carbonate Substances 0.000 claims description 6
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 6
- 238000005261 decarburization Methods 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 238000001471 micro-filtration Methods 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 25
- 239000000126 substance Substances 0.000 abstract description 23
- 230000002829 reductive effect Effects 0.000 abstract description 13
- 239000002918 waste heat Substances 0.000 abstract description 9
- 230000007935 neutral effect Effects 0.000 abstract description 3
- 230000036961 partial effect Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 230000036632 reaction speed Effects 0.000 abstract description 2
- 239000002689 soil Substances 0.000 abstract description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 10
- 235000011941 Tilia x europaea Nutrition 0.000 description 10
- 239000004571 lime Substances 0.000 description 10
- 235000011116 calcium hydroxide Nutrition 0.000 description 8
- 239000004568 cement Substances 0.000 description 7
- 238000003889 chemical engineering Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 239000011575 calcium Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005262 decarbonization Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 description 1
- LRDIEHDJWYRVPT-UHFFFAOYSA-N 4-amino-5-hydroxynaphthalene-1-sulfonic acid Chemical compound C1=CC(O)=C2C(N)=CC=C(S(O)(=O)=O)C2=C1 LRDIEHDJWYRVPT-UHFFFAOYSA-N 0.000 description 1
- 229910019440 Mg(OH) Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/07—Preparation from the hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
Abstract
The invention provides a system and a method for adsorbing and solidifying carbon dioxide by industrial sludge, which are characterized in that alkaline aqueous sludge generated in the industrial wastewater treatment process is used for adsorbing and solidifying carbon dioxide in waste gas of coal chemical enterprises, the aqueous sludge generated by a wastewater treatment unit is used for solidifying carbon dioxide in situ, pretreatment of the sludge is not needed, pH value is adjusted to be neutral after the alkaline sludge is solidified, and the risk of salinization of surrounding soil in the sludge landfill treatment process is greatly reduced; because the carbon dioxide gas discharged from the coal chemical industry enterprises has a certain temperature, the reaction speed of alkaline substances in the sludge and carbon dioxide can be promoted, meanwhile, the water in the sludge can be evaporated through waste heat, and the water content of the discharged sludge is reduced; in the reaction process of absorbing and solidifying carbon dioxide by sludge, the carbon dioxide reacts with sodium hydroxide to generate sodium carbonate, and unreacted sodium carbonate flows back to the front-end process through sludge press filtration liquid, so that the adding amount of sodium carbonate in the water treatment process link can be reduced, and partial carbon dioxide resource utilization is realized.
Description
Technical Field
The invention relates to the field of industrial solid waste resource utilization, in particular to a system and a method for adsorbing and solidifying carbon dioxide by industrial sludge.
Background
The waste gas generated in the coal chemical engineering project mainly comes from dust-removing tail gas of a coal storage and transportation section, dust-removing tail gas of a coal dust preparation and conveying system, continuous air discharge and accident air discharge of a gasification section, acid gas and accident air discharge of a stripping tower of a conversion section, tail gas discharged by a washing tower of a desulfurization and decarbonization section and H-containing tail gas 2 S acid gas, exhaust gas of propylene compression section, exhaust gas discharged by sulfur recovery device, accident vent gas of methanation section and the like, and the components are mainly H 2 ，CO，N 2 ，CO 2 ，H 2 S，COS，H 2 O，CH 4 HCl, is complex in composition and cannot be used in the process. In order to ensure the normal operation and safety of the chemical production device, corresponding facilities such as a flare gas discharge pipe network, a flare and the like are generally arranged, materials from each discharge system are firstly introduced into a flare gas separation tank, gas and liquid are separated, liquid is returned to a recovery device, gas is introduced into a flare gas seal tank, gas from the seal tank is introduced into a flare stack, and the gas components after combustion are mainly CO 2 And H 2 O, etc.
Meanwhile, the coal chemical engineering project is a large water consumption household, taking 100 ten thousand tons of coal to prepare methanol as an example, the annual water consumption reaches 1500 ten thousand meters 3 A large amount of industrial wastewater is produced while consuming fresh water. The basic process of the current industrial wastewater treatment engineering is as follows: because the hardness and silicon content of calcium and magnesium ions in the waste water are high, a high-density pool and a resin exchange device are added before the reverse osmosis and evaporative crystallization process section to remove the hardness and silicon content, and excessive sodium carbonate, sodium hydroxide, calcium oxide, magnesium agent, sodium metaaluminate and other medicaments are generally added according to different water quality hardness and silicon removal. A large amount of sludge is generated, the annual treatment water amount is calculated by 800 ten thousand tons of industrial wastewater, the generated sludge amount can reach about 4 ten thousand tons, and the excessive alkaline reagent is added, so that the calcium and magnesium ions and the alkalinity in the sludge are too high.
The invention patent CN103739184B discloses a method for drying domestic sludge by using waste heat of a dry-method cement kiln and directly blending and burning the domestic sludge, wherein municipal sludge, sodium hydroxide, glycerol, diglycolamine, sodium alkylbenzenesulfonate and water are mixed into an additive, and then pulverized coal and slaked lime are metered. And (3) drying the residual air at the kiln head of the dry-method cement kiln or the flue gas after the power generation boiler is introduced into the drying rotary kiln, and directly pumping the dried sludge mixture into a rising flue between the kiln tail of the dry-method cement kiln and the decomposing furnace at a high-pressure air interval of an air pump, so as to mix and burn the dried sludge mixture with cement raw materials in the kiln. However, the method utilizes waste heat for drying in a drying rotary kiln, and then quantitatively mixes the waste heat into cement raw materials for burning to prepare cement, so that the sludge is combined with a cement plant to treat the sludge, the problem of large-scale sludge transportation radius cost exists, and various chemical reagents are required to be added, so that the industrialization cost is high. The invention patent CN110694458A discloses a method for absorbing carbon dioxide in the flue gas of a lime kiln by using municipal sludge, wherein calcined quicklime powder of the lime kiln is mixed with the sludge to react for reducing water, stabilizing and sterilizing, the formed mixture pile body is used for absorbing carbon dioxide generated in the lime calcining process to enable the carbon dioxide to be calcified, so that carbon dioxide emission reduction is realized, and meanwhile, the flue gas waste heat further dries the mixture, and the ring is buckled to form a virtuous circle of the production process. However, the method decomposes calcium carbonate to prepare lime and carbon dioxide, does not achieve the net utilization of the carbon dioxide, and needs to be combined with a lime production plant, and meanwhile, the method consumes coal to heat and decompose the calcium carbonate to prepare lime, so that the phenomenon of resource waste exists.
Disclosure of Invention
Aims at the condition that the CO is discharged during the treatment of industrial waste gas in the prior art 2 The invention provides a system and a method for absorbing and solidifying carbon dioxide by industrial sludge, which are used for introducing carbon dioxide waste gas discharged by a coal chemical industry enterprise torch into a sludge treatment system generated by industrial waste water, absorbing and solidifying carbon dioxide by utilizing excessive alkaline substances such as calcium hydroxide, sodium hydroxide and the like in sludge of an industrial waste water hardness removal unit, realizing alkaline conversion of the sludge into neutral, further heating, drying and reducing the sludge by utilizing waste heat in the waste gas, generating sodium carbonate by reacting with the sodium hydroxide, and having the functions of reducing carbon dioxide emission and recycling the sludge, thus having important ecological and economic significance.
The invention is realized by the following technical scheme:
an industrial sludge adsorption solidification carbon dioxide system comprises a flare tower, a sludge concentration tank, a pipeline mixer, a reactor, a filter press, a wastewater tank and an industrial wastewater hardness removal unit; the output end of the torch tower is connected with the gas input end of the pipeline mixer, the output end of the pipeline mixer is connected with the input end of the reactor, the output end of the reactor is connected with the input end of the filter press, one end of the output end of the filter press is connected with the wastewater tank, and the other end of the output end of the filter press is arranged in an outward transportation mode; the output end of the industrial wastewater hardness removal unit is connected with the input end of the sludge concentration tank, and the output end of the sludge concentration tank is connected with the sludge input end of the pipeline mixer.
The method for adsorbing and solidifying the carbon dioxide by using the industrial sludge comprises the following steps of:
step 1, conveying sludge generated by an industrial wastewater hardness removal unit into a sludge concentration tank, carrying out sludge concentration treatment, separating sludge in the sludge concentration tank from supernatant, wherein the supernatant is returned into the wastewater tank, and conveying the sludge into a pipeline mixer;
step 2, the discharged waste gas is conveyed into a pipeline mixer filled with sludge by a flare tower, and is mixed by the pipeline mixer, so that the waste gas is contacted with the sludge, and the waste gas and the sludge are conveyed into a reactor for contact reaction, so that a carbon dioxide sludge gas-liquid mixture is obtained;
and 3, conveying the carbon dioxide sludge gas-liquid mixture into a filter press for filter pressing treatment to obtain solidified sludge, separating sludge and supernatant in the solidified sludge, wherein the supernatant is returned into a wastewater tank, and carrying out outward treatment after drying the sludge.
Preferably, in the step 1, the sludge adopts a high-density pool or a tubular micro-filtration to remove alkaline sludge generated by a silicon unit, the pH of the sludge is 10-12, and the water content of the sludge is 80-97%.
Preferably, in the step 1, the sludge concentration tank conveys the sludge to the pipeline mixer through a sludge conveying pump, wherein the conveying sludge amount is 10-50 m 3 And/h, the conveying pressure is 0.1-1 Mpa.
Preferably, in the step 2, the concentration of carbon dioxide in the waste gas discharged from the flare tower is 80-100%, the temperature of the waste gas is 15-80 ℃, and the flow rate of waste gas delivery is 1-100 Nm 3 And/h, the waste gas conveying pressure is 0.05-0.5 Mpa; the decarburization rate of carbon dioxide in the exhaust gas is 10-90%.
Preferably, in step 2, the flow rate of the pipe mixer is 0.9-1.2 m/s.
Preferably, in step 2, the reaction principle of the exhaust gas and the sludge in the reactor is as follows:
the method comprises the steps of directly reacting excessive sodium hydroxide and carbon dioxide added in the wastewater treatment process to generate sodium carbonate, reacting the sodium carbonate with calcium sulfate in sludge water to generate calcium carbonate and sodium sulfate, reacting the added excessive calcium hydroxide with carbon dioxide to generate calcium carbonate and water, reacting magnesium oxide with carbon dioxide to generate magnesium carbonate, reacting the magnesium carbonate with calcium hydroxide to generate calcium carbonate and magnesium hydroxide precipitate, and returning unreacted dissolved sodium carbonate in the water to a wastewater tank through supernatant fluid for reducing the content of sodium carbonate agents.
In the step 2, the reaction temperature of the mixture of the carbon dioxide and the sludge is 15-35 ℃ and the reaction time is 0.5-5 h.
Preferably, in the step 3, the working pressure of the filter press is 1-10 Mpa, and the working time period is 1-3 h.
Preferably, in the step 3, the water content of the produced solidified sludge is 50-80%, and the pH is 6.5-8.5.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides an industrial sludge adsorption carbon dioxide solidifying system, which is characterized in that alkaline aqueous sludge generated in the industrial wastewater treatment process is used for adsorbing and solidifying carbon dioxide in waste gas of coal chemical enterprises, and the aqueous sludge generated by a wastewater treatment unit is used for solidifying carbon dioxide in situ without pretreatment of sludge, so that pH value is adjusted to be neutral after alkaline sludge solidification, the risk of salinization of surrounding soil in the sludge landfill treatment process is greatly reduced, and the carbon dioxide discharge capacity of the coal chemical enterprises is reduced.
The invention provides a system and a method for adsorbing and solidifying carbon dioxide by industrial sludge, which are used for adsorbing and solidifying carbon dioxide waste gas generated in a coal chemical project by sludge solid waste generated in an industrial wastewater treatment process, realizing carbon dioxide emission reduction of coal chemical enterprises, changing chemical properties of sludge by solidifying carbon dioxide, laying a foundation for subsequent sludge treatment, recycling carbon dioxide to generate sodium carbonate for reuse, reducing the addition of a medicament in the wastewater treatment process, and having important economic and ecological significance. After the treatment by the method, the alkaline characteristics of sludge generated by industrial wastewater treatment are fully utilized, carbon dioxide is adsorbed and solidified, the chemical characteristics of the sludge are changed, carbon emission reduction is realized, part of carbon dioxide is converted into sodium carbonate, recycling of part of carbon dioxide is realized, the wastewater treatment cost and the risk of sludge treatment on the environment are reduced, the carbon dioxide emission of industrial projects is reduced, and a new thought and way are provided for carbon emission reduction and sludge treatment. Because the carbon dioxide gas discharged from the coal chemical industry enterprises has a certain temperature, the reaction speed of alkaline substances in the sludge and carbon dioxide can be promoted, meanwhile, the water in the sludge can be evaporated through waste heat, and the water content of the discharged sludge is reduced; in the reaction process of absorbing and solidifying carbon dioxide by sludge, the carbon dioxide reacts with sodium hydroxide to generate sodium carbonate, and unreacted sodium carbonate flows back to the front-end process through sludge press filtration liquid, so that the adding amount of sodium carbonate in the water treatment process link can be reduced, and partial carbon dioxide resource utilization is realized.
Drawings
FIG. 1 is a block diagram of an industrial sludge adsorption solidification carbon dioxide system according to the present invention.
In the figure: 1-a flare stack; 2-a sludge concentration tank; 3-pipe mixer; 4-a reactor; 5-a filter press; 6, a conveyer belt; 7-a wastewater pool; 8-industrial wastewater hardness removal unit.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the attached drawing figures:
referring to fig. 1, the invention provides an industrial sludge adsorption solidification carbon dioxide system, which comprises a flare tower 1, a sludge concentration tank 2, a pipeline mixer 3, a reactor 4, a filter press 5, a wastewater tank 7 and an industrial wastewater hardness removal unit 8; the output end of the flare stack 1 is connected with the gas input end of the pipeline mixer 3, the output end of the pipeline mixer 3 is connected with the input end of the reactor 4, the output end of the reactor 4 is connected with the input end of the filter press 5, one end of the output end of the filter press 5 is connected with the wastewater tank 7, and the other end of the output end of the filter press 5 is arranged in an outward transportation mode; the output end of the industrial wastewater hardness removal unit 8 is connected with the input end of the sludge concentration tank 2, and the output end of the sludge concentration tank 2 is connected with the sludge input end of the pipeline mixer 3.
The invention also provides a method for absorbing and solidifying carbon dioxide by using the industrial sludge, which is characterized in that carbon dioxide waste gas discharged by a torch of a coal chemical industry enterprise is introduced into a sludge treatment system generated by industrial waste water, excessive calcium hydroxide and sodium hydroxide are contained in the sludge to absorb and solidify carbon dioxide, meanwhile, the alkaline conversion of the sludge is realized, the heating, drying and the reduction of the sludge can be realized by using the waste heat in the waste gas, sodium carbonate is generated by reacting with the sodium hydroxide, and the recycling of partial carbon dioxide is realized, so that the method has important ecological and economic significance.
Specifically, the method for adsorbing and solidifying carbon dioxide by using industrial sludge comprises the following steps:
step 1, conveying sludge generated by an industrial wastewater hardness removal unit 8 into a sludge concentration tank 2 for sludge concentration treatment, separating the sludge in the sludge concentration tank 2 from supernatant, wherein the supernatant is returned into a wastewater tank 7, and conveying the sludge into a pipeline mixer 3;
step 2, the flare stack 1 conveys the discharged waste gas into a pipeline mixer 3 filled with sludge through a fan, and mixes the waste gas with the sludge through the pipeline mixer 3, so that the waste gas and the sludge are fully contacted, and the waste gas and the sludge are conveyed into a reactor 4 for contact reaction, and a carbon dioxide sludge gas-liquid mixture is obtained;
and 3, conveying the carbon dioxide sludge gas-liquid mixture into a filter press 5 for filter pressing treatment to obtain solidified sludge, separating sludge and supernatant in the solidified sludge, wherein the supernatant is returned into a wastewater tank 7, and carrying out outward treatment after drying the sludge.
The invention adopts wet sludge to absorb CO 2 With water and CO in the sludge 2 。
Specifically, in the step 1, the sludge adopts a high-density pool or a tubular micro-filtration to remove alkaline sludge generated by a silicon unit, the pH of the sludge is 10-12, and the water content of the sludge is 80-97%.
Specifically, in the step 1, the main components of the sludge are calcium carbonate and magnesium hydroxide; the water contained in the sludge contains sodium hydroxide, calcium hydroxide, magnesium oxide and magnesium chloride.
Specifically, in step 1, the sludge concentration tank 2 conveys sludge to the pipeline mixer 3 through a sludge conveying pump, wherein the sludge conveying pump is a universal sludge screw pump, and the conveying sludge amount is 10-50 m 3 And/h, the conveying pressure is 0.1-1 Mpa.
Specifically, the concentration of carbon dioxide in the waste gas discharged from the flare stack 1 is 80-100%, the temperature of the waste gas is 15-80 ℃, and the flow rate of the waste gas delivery is 1-100 Nm 3 And/h, the waste gas conveying pressure is 0.05-0.5 Mpa.
Specifically, the pipeline mixer is a general static baffle type, a hole plate type, a three-way type mixer and the like, and the flow speed of the pipeline mixer is 0.9-1.2 m/s;
specifically, the reaction time of the mixture of carbon dioxide and sludge in the reactor is 0.5-5 h, and the temperature of the mixture of carbon dioxide and sludge is 15-35 ℃;
the chemical reaction principle related by the method for solidifying carbon dioxide by utilizing sludge adsorption is as follows:
the method comprises the steps of directly reacting excessive sodium hydroxide and carbon dioxide added in the wastewater treatment process to generate sodium carbonate, further reacting the sodium carbonate with calcium sulfate in sludge water to generate calcium carbonate and sodium sulfate, reacting the added excessive calcium hydroxide with carbon dioxide to generate calcium carbonate and water, reacting magnesium oxide with carbon dioxide to generate magnesium carbonate, and further reacting the magnesium carbonate with calcium hydroxide to generate calcium carbonate and magnesium hydroxide precipitate. The unreacted and dissolved sodium carbonate in the water returns to the front-end water treatment process through the supernatant, so that the content of sodium carbonate medicament can be reduced, and the chemical equation is as follows:
MgO+CO 2 ＝MgCO 3
MgCO 3 +Ca(OH) 2 →Mg(OH) 2 ↓+CaCO 3 ↓
Ca(OH) 2 +CO 2 ＝CaCO 3 ↓+H 2 O
2NaOH+CO 2 ＝Na 2 CO 3 +H 2 O
CaSO 4 +Na 2 CO 3 →CaCO 3 ↓+Na 2 SO 4
specifically, in the step 3, the working pressure of the filter press 5 is 1-10 Mpa, and the working time period is 1-3 h.
Specifically, in the step 3, the water content of the produced solidified sludge is 50-80%, and the pH value is 6.5-8.5.
Specifically, in the step 3, sludge is dried and transported out through the conveyer belt 6.
Example 1
A method for adsorbing and solidifying carbon dioxide by industrial sludge, which comprises the following steps:
step 1, selecting sludge in a high-density pool of a coal chemical wastewater treatment project of Erdos, wherein the sludge in the high-density pool is removed by adopting a lime hardening removal and magnesium agent silicon removal methodSending sludge generated by the high-density tank into a sludge concentration tank, wherein the water content of the sludge is 80%, the pH value is 10.5, and sending supernatant generated by the sludge tank back to a water inlet of a hard removing unit; and the sludge generated by the sludge concentration 2 is conveyed into the pipeline mixer 3 through a sludge screw with the conveying amount of 10m 3 And/h, the conveying pressure is 0.1Mpa;
step 2, conveying the waste gas at the flare discharge port of the coal chemical engineering project into a pipeline mixer 3 filled with sludge through a fan, conveying the waste gas with the content of 80 percent and the temperature of 25 ℃ to a pipeline mixer connected with sludge conveying through the fan, wherein the flow speed of the pipeline mixer is 0.9m/s, and the carbon dioxide conveying flow is 10Nm 3 And/h, conveying the sludge with the pressure of 0.06Mpa, and fully stirring and contacting the sludge with carbon dioxide in the waste gas through a pipeline mixer for reaction; conveying the waste gas and the sludge into a reactor 4 for contact reaction to obtain a carbon dioxide sludge gas-liquid mixture, wherein the reaction time is 4.5h, and the temperature of the carbon dioxide and sludge mixture is 20 ℃;
and 3, sending the carbon dioxide sludge gas-liquid mixture into a filter press for further reaction, and then carrying out filter pressing treatment, wherein the working pressure of the filter press is 2Mpa, the working time period is 1h, and the water content of the produced solidified sludge is 50%. And returning the supernatant fluid after filter pressing to a wastewater pool except for a water inlet of the hard unit, and sending the generated sludge to be treated.
The test result shows that the carbon dioxide content in the waste gas is 1.6kg/Nm 3 After the sludge adsorption, the pressure drop is 0.2kg/Nm 3 The decarbonization rate reaches 87.5%, the water content of the produced sludge is 50%, and the pH of the sludge is 8.5.
Example 2
A method for adsorbing and solidifying carbon dioxide by industrial sludge, which comprises the following steps:
step 1, selecting sludge in a high-density pond of a treatment project of the coal chemical wastewater in the Erdos industry, wherein the high-density pond adopts a lime hardness removal and magnesium agent silicon removal method to remove hardness and silicon in water, the sludge generated in the high-density pond is sent into a sludge concentration pond, the water content of the sludge is 97%, the pH value is 11.6, and supernatant fluid generated in the sludge pond is sent back to a water inlet of a hardness removal unit; and the sludge generated by the sludge concentration 2 is conveyed to a pipeline mixer through a sludge screw3, the delivery amount is 50m 3 And/h, the conveying pressure is 1Mpa;
step 2, the waste gas at the flare discharge outlet of the coal chemical engineering project is connected with a fan through a pipeline, the waste gas with the content of 98 percent and the temperature of 80 ℃ is sent to a pipeline mixer connected with sludge conveying through the fan, the flow speed of the pipeline mixer is 1.2m/s, and the carbon dioxide conveying flow is 100Nm 3 And/h, conveying the sludge to the pressure of 0.5Mpa, and fully stirring the sludge and carbon dioxide in the waste gas through a pipeline mixer for contact reaction; conveying the waste gas and the sludge into a reactor 4 for contact reaction to obtain a carbon dioxide sludge gas-liquid mixture, wherein the reaction time is 2.5h, and the temperature of the carbon dioxide and sludge mixture is 35 ℃;
and 3, sending the carbon dioxide sludge gas-liquid mixture into a filter press for further reaction, and then carrying out filter pressing treatment, wherein the working pressure of the filter press is 10Mpa, the working time period is 3h, and the water content of the produced solidified sludge is 80%. And returning the supernatant fluid after filter pressing to a wastewater pool except for a water inlet of the hard unit, and sending the generated sludge to be treated.
The test result shows that the carbon dioxide content in the waste gas is from 1.9kg/Nm 3 After the sludge adsorption, the pressure drop is 0.3kg/Nm 3 The decarburization rate reaches 84.2%, the water content of the produced sludge is 80%, and the pH of the sludge is 6.5.
Example 3
A method for adsorbing and solidifying carbon dioxide by industrial sludge, which comprises the following steps:
step 1, selecting sludge in a high-density pool of a treatment project of the coal chemical wastewater of the Erdos, wherein the high-density pool adopts a lime hardness removal and magnesium agent silicon removal method to remove hardness and silicon in water, the sludge generated in the high-density pool is sent into a sludge concentration pool, the water content of the sludge is 95%, the pH value is 11.3, and supernatant fluid generated in the sludge pool is sent back to a water inlet of a hardness removal unit; and the sludge generated by the sludge concentration 2 is conveyed into the pipeline mixer 3 through a sludge screw with the conveying amount of 30m 3 And/h, the conveying pressure is 0.6Mpa;
step 2, the waste gas at the flare discharge outlet of the coal chemical engineering project is connected with a fan through a pipeline, and the waste gas with the content of 95 percent and the temperature of 60 ℃ is sent to a pipeline mixer connected with sludge conveying through the fan, and is conveyed through a pipelineThe mixer flow rate was 1.0m/s and the carbon dioxide delivery flow rate was 80Nm 3 And/h, conveying the sludge to the pressure of 0.3Mpa, and fully stirring the sludge and carbon dioxide in the waste gas through a pipeline mixer for contact reaction; conveying the waste gas and the sludge into a reactor 4 for contact reaction to obtain a carbon dioxide sludge gas-liquid mixture, wherein the reaction time is 1.5h, and the temperature of the carbon dioxide and sludge mixture is 30 ℃;
and 3, sending the carbon dioxide sludge gas-liquid mixture into a filter press for further reaction, and then carrying out filter pressing treatment, wherein the working pressure of the filter press is 5Mpa, the working time period is 2.5h, and the water content of the produced solidified sludge is 60%. And returning the supernatant fluid after filter pressing to a wastewater pool except for a water inlet of the hard unit, and sending the generated sludge to be treated.
The test result shows that the carbon dioxide content in the waste gas is 1.8kg/Nm 3 After the sludge adsorption, the pressure drop is 0.3kg/Nm 3 The decarburization rate reaches 83.3%, the water content of the produced sludge is 60%, and the pH of the sludge is 7.3.
Example 4
A method for adsorbing and solidifying carbon dioxide by industrial sludge, which comprises the following steps:
step 1, selecting sludge in a high-density pond of a treatment project of the coal chemical wastewater in the Erdos industry, wherein the high-density pond adopts a lime hardness removal and magnesium agent silicon removal method to remove hardness and silicon in water, the sludge generated in the high-density pond is sent into a sludge concentration pond, the water content of the sludge is 93%, the pH value is 10.7, and supernatant fluid generated in the sludge pond is sent back to a water inlet of a hardness removal unit; and the sludge generated by the sludge concentration 2 is conveyed into the pipeline mixer 3 through a sludge screw with the conveying amount of 25m 3 And/h, the conveying pressure is 0.4Mpa;
step 2, the waste gas of the flare discharge outlet of the coal chemical engineering project is connected with a fan through a pipeline, the waste gas with 96 percent of content and 50 ℃ of temperature is sent to a pipeline mixer connected with sludge conveying through the fan, the flow speed of the pipeline mixer is 0.9m/s, and the carbon dioxide conveying flow rate is 70Nm 3 And/h, conveying the sludge to the pressure of 0.4Mpa, and fully stirring the sludge and carbon dioxide in the waste gas through a pipeline mixer for contact reaction; and delivering the waste gas and the sludge into a reactor 4 for contact reaction to obtain carbon dioxide sludge gasThe reaction time of the liquid mixture is 0.5h, and the temperature of the mixture of carbon dioxide and sludge is 28 ℃;
and 3, sending the carbon dioxide sludge gas-liquid mixture into a filter press for further reaction, and then carrying out filter pressing treatment, wherein the working pressure of the filter press is 6Mpa, the working time period is 2h, and the water content of the produced solidified sludge is 75%. And returning the supernatant fluid after filter pressing to a wastewater pool except for a water inlet of the hard unit, and sending the generated sludge to be treated.
The test result shows that the carbon dioxide content in the waste gas is 1.82kg/Nm 3 After the sludge adsorption, the pressure drop is 0.4kg/Nm 3 The decarburization rate reaches 78.0%, the water content of the produced sludge is 75%, and the pH of the sludge is 7.6.
Therefore, the method has simple process flow, can use excessive alkaline substances in the industrial wastewater and sludge treatment process to absorb carbon dioxide, changes the chemical property and the water content of the sludge while realizing carbon emission reduction, realizes carbon resource utilization, reduces sludge treatment risk, saves a large amount of energy consumption and reduces cost.
The method of the invention utilizes alkaline sludge to adsorb and solidify carbon dioxide waste gas. After the treatment by the method, the sludge is modified, carbon dioxide waste gas is adsorbed and solidified, and the waste gas is recycled, so that the sludge is reduced by fully utilizing waste heat of the waste gas, carbon emission of coal chemical enterprises is reduced, the sludge treatment risk is reduced, and the existing industrial wastewater sludge treatment system is organically combined with the waste gas treatment of the coal chemical enterprises, so that the method has important economic and ecological significance.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (5)
1. The industrial sludge adsorption solidification carbon dioxide method is implemented by an industrial sludge adsorption solidification carbon dioxide system, and the industrial sludge adsorption solidification carbon dioxide system comprises a flare tower (1), a sludge concentration tank (2), a pipeline mixer (3), a reactor (4), a filter press (5), a wastewater tank (7) and an industrial wastewater hardness removal unit (8); the output end of the flare stack (1) is connected with the gas input end of the pipeline mixer (3), the output end of the pipeline mixer (3) is connected with the input end of the reactor (4), the output end of the reactor (4) is connected with the input end of the filter press (5), one end of the output end of the filter press (5) is connected with the wastewater tank (7), and the other end of the filter press is arranged in an outward transportation mode; the output end of the industrial wastewater hardness removal unit (8) is connected with the input end of the sludge concentration tank (2), and the output end of the sludge concentration tank (2) is connected with the sludge input end of the pipeline mixer (3); the method is characterized by comprising the following steps of:
step 1, conveying sludge generated by an industrial wastewater hardness removal unit (8) into a sludge concentration tank (2) for sludge concentration treatment, separating the sludge in the sludge concentration tank (2) from supernatant, wherein the supernatant is returned into a wastewater tank (7), and conveying the sludge into a pipeline mixer (3);
the sludge adopts a high-density pool or a tubular micro-filtration hard silicon removal unit to produce alkaline sludge, the pH value of the sludge is 10-12, and the water content of the sludge is 80-97%;
the sludge concentration tank (2) conveys the sludge to the pipeline mixer (3) through a sludge conveying pump, wherein the quantity of the conveyed sludge is 10-50 m 3 And/h, the conveying pressure is 0.1-1 Mpa;
step 2, the flare stack (1) conveys the discharged waste gas into a pipeline mixer (3) filled with sludge, and the waste gas and the sludge are mixed through the pipeline mixer (3) so as to be contacted, and the waste gas and the sludge are conveyed into a reactor (4) for contact reaction, so that a carbon dioxide sludge gas-liquid mixture is obtained;
the flow rate of the pipeline mixer (3) is 0.9-1.2 m/s;
the reaction principle of the waste gas and the sludge in the reactor (4) is as follows:
the method comprises the steps of directly reacting excessive sodium hydroxide and carbon dioxide added in the wastewater treatment process to generate sodium carbonate, reacting the sodium carbonate with calcium sulfate in sludge water to generate calcium carbonate and sodium sulfate, reacting the added excessive calcium hydroxide with carbon dioxide to generate calcium carbonate and water, reacting magnesium oxide with carbon dioxide to generate magnesium carbonate, reacting the magnesium carbonate with calcium hydroxide to generate calcium carbonate and magnesium hydroxide sediment, and returning unreacted dissolved sodium carbonate in the water to a wastewater tank (7) through supernatant fluid to reduce the content of sodium carbonate agents;
and 3, conveying the carbon dioxide sludge gas-liquid mixture into a filter press (5) for filter pressing treatment to obtain solidified sludge, separating sludge and supernatant in the solidified sludge, wherein the supernatant is returned into a wastewater tank (7), and carrying out outward treatment after drying the sludge.
2. The method for adsorbing and solidifying carbon dioxide by industrial sludge according to claim 1, wherein in the step 2, the concentration of carbon dioxide in the waste gas discharged from the flare stack (1) is 80-100%, the temperature of the waste gas is 15-80 ℃, and the flow rate of the waste gas is 1-100 Nm 3 And/h, the waste gas conveying pressure is 0.05-0.5 Mpa; the decarburization rate of carbon dioxide in the exhaust gas is 10-90%.
3. The method for adsorbing and solidifying carbon dioxide by industrial sludge according to claim 1, wherein in the step 2, the reaction temperature of the mixture of carbon dioxide and sludge is 15-35 ℃ and the reaction time is 0.5-5 h.
4. The method for adsorbing and solidifying carbon dioxide by industrial sludge according to claim 1, wherein in the step 3, the working pressure of the filter press (5) is 1-10 Mpa, and the working time period is 1-3 h.
5. The method for adsorbing and solidifying carbon dioxide by industrial sludge according to claim 1, wherein in the step 3, the water content of the produced solidified sludge is 50-80%, and the pH is 6.5-8.5.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3947350A (en) * | 1972-10-30 | 1976-03-30 | Envirotech Corporation | Process of preparing sewage sludge for dewatering |
| US5455013A (en) * | 1993-02-04 | 1995-10-03 | Kyouei Bussan K.K. | Carbon dioxide absorber and its manufacturing method using sludge, and method for absorbing carbon dioxide in exhaust gas |
| JP2004352587A (en) * | 2003-05-30 | 2004-12-16 | Toshiba Corp | System and method for recovering carbon dioxide in exhaust gas |
| JP2007061710A (en) * | 2005-08-30 | 2007-03-15 | Kobelco Eco-Solutions Co Ltd | Organic sludge treatment method and apparatus |
| CN203370458U (en) * | 2013-06-19 | 2014-01-01 | 清勤水处理科技（上海）有限公司 | Waste gas washing tower |
| KR20180031973A (en) * | 2016-09-21 | 2018-03-29 | 재단법인 포항산업과학연구원 | Method for preparation of carbonate by using sludge, and sludge including carbonate |
| CN110354671A (en) * | 2019-07-30 | 2019-10-22 | 天津理工大学 | A kind of method of red mud and the processing of lime kiln exhaust gas common resourceization |
| CN110694458A (en) * | 2019-09-18 | 2020-01-17 | 武汉理工大学 | Method for absorbing carbon dioxide in lime kiln flue gas by using municipal sludge |
| CN113277645A (en) * | 2021-06-04 | 2021-08-20 | 陕西大河净化科技有限公司 | Process for reducing hardness of wastewater by using waste gas containing carbon dioxide |
-
2022
- 2022-03-09 CN CN202210232454.6A patent/CN114699890B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3947350A (en) * | 1972-10-30 | 1976-03-30 | Envirotech Corporation | Process of preparing sewage sludge for dewatering |
| US5455013A (en) * | 1993-02-04 | 1995-10-03 | Kyouei Bussan K.K. | Carbon dioxide absorber and its manufacturing method using sludge, and method for absorbing carbon dioxide in exhaust gas |
| JP2004352587A (en) * | 2003-05-30 | 2004-12-16 | Toshiba Corp | System and method for recovering carbon dioxide in exhaust gas |
| JP2007061710A (en) * | 2005-08-30 | 2007-03-15 | Kobelco Eco-Solutions Co Ltd | Organic sludge treatment method and apparatus |
| CN203370458U (en) * | 2013-06-19 | 2014-01-01 | 清勤水处理科技（上海）有限公司 | Waste gas washing tower |
| KR20180031973A (en) * | 2016-09-21 | 2018-03-29 | 재단법인 포항산업과학연구원 | Method for preparation of carbonate by using sludge, and sludge including carbonate |
| CN110354671A (en) * | 2019-07-30 | 2019-10-22 | 天津理工大学 | A kind of method of red mud and the processing of lime kiln exhaust gas common resourceization |
| CN110694458A (en) * | 2019-09-18 | 2020-01-17 | 武汉理工大学 | Method for absorbing carbon dioxide in lime kiln flue gas by using municipal sludge |
| CN113277645A (en) * | 2021-06-04 | 2021-08-20 | 陕西大河净化科技有限公司 | Process for reducing hardness of wastewater by using waste gas containing carbon dioxide |
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