CN114479970A - Low-doping water coal slurry additive and preparation method thereof - Google Patents
Low-doping water coal slurry additive and preparation method thereof Download PDFInfo
- Publication number
- CN114479970A CN114479970A CN202210194912.1A CN202210194912A CN114479970A CN 114479970 A CN114479970 A CN 114479970A CN 202210194912 A CN202210194912 A CN 202210194912A CN 114479970 A CN114479970 A CN 114479970A
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- Prior art keywords
- component
- softened water
- parts
- stirring
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 206
- 239000000654 additive Substances 0.000 title claims abstract description 48
- 230000000996 additive effect Effects 0.000 title claims abstract description 45
- 239000003250 coal slurry Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 45
- 239000000203 mixture Substances 0.000 claims abstract description 39
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 claims abstract description 23
- 239000000178 monomer Substances 0.000 claims abstract description 22
- 239000012986 chain transfer agent Substances 0.000 claims abstract description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 239000007800 oxidant agent Substances 0.000 claims abstract description 13
- 230000001590 oxidative effect Effects 0.000 claims abstract description 13
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 7
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims abstract description 4
- 150000001408 amides Chemical class 0.000 claims abstract description 4
- 150000001412 amines Chemical class 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 150000002466 imines Chemical class 0.000 claims abstract description 4
- 229920000570 polyether Polymers 0.000 claims abstract description 4
- 239000001632 sodium acetate Substances 0.000 claims abstract description 4
- 235000017281 sodium acetate Nutrition 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 125
- 238000005303 weighing Methods 0.000 claims description 35
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 18
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims description 18
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 15
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 15
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 9
- HSHXDCVZWHOWCS-UHFFFAOYSA-N N'-hexadecylthiophene-2-carbohydrazide Chemical compound CCCCCCCCCCCCCCCCNNC(=O)c1cccs1 HSHXDCVZWHOWCS-UHFFFAOYSA-N 0.000 claims description 9
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 9
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 9
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 9
- 239000011782 vitamin Substances 0.000 claims description 9
- 229940088594 vitamin Drugs 0.000 claims description 9
- 229930003231 vitamin Natural products 0.000 claims description 9
- 235000013343 vitamin Nutrition 0.000 claims description 9
- 150000003722 vitamin derivatives Chemical class 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000003208 petroleum Substances 0.000 claims description 8
- BYDRTKVGBRTTIT-UHFFFAOYSA-N 2-methylprop-2-en-1-ol Chemical compound CC(=C)CO BYDRTKVGBRTTIT-UHFFFAOYSA-N 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 6
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 6
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 6
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 6
- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- ITCAUAYQCALGGV-XTICBAGASA-M sodium;(1r,4ar,4br,10ar)-1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylate Chemical compound [Na+].C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C([O-])=O ITCAUAYQCALGGV-XTICBAGASA-M 0.000 claims description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 5
- RFRMMZAKBNXNHE-UHFFFAOYSA-N 6-[4,6-dihydroxy-5-(2-hydroxyethoxy)-2-(hydroxymethyl)oxan-3-yl]oxy-2-(hydroxymethyl)-5-(2-hydroxypropoxy)oxane-3,4-diol Chemical compound CC(O)COC1C(O)C(O)C(CO)OC1OC1C(O)C(OCCO)C(O)OC1CO RFRMMZAKBNXNHE-UHFFFAOYSA-N 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- ZLWPAELISNYYGM-UHFFFAOYSA-N azanium;2-dodecylbenzenesulfonate Chemical compound [NH4+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O ZLWPAELISNYYGM-UHFFFAOYSA-N 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- ASUAYTHWZCLXAN-UHFFFAOYSA-N prenol Chemical compound CC(C)=CCO ASUAYTHWZCLXAN-UHFFFAOYSA-N 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 36
- 239000002002 slurry Substances 0.000 description 28
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 4
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- -1 isoamylene alcohol Chemical compound 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 125000001844 prenyl group Chemical group [H]C([*])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 1
- QVDTXNVYSHVCGW-ONEGZZNKSA-N isopentenol Chemical compound CC(C)\C=C\O QVDTXNVYSHVCGW-ONEGZZNKSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/326—Coal-water suspensions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/106—Liquid carbonaceous fuels containing additives mixtures of inorganic compounds with organic macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/12—Inorganic compounds
- C10L1/1233—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof
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- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/12—Inorganic compounds
- C10L1/1233—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof
- C10L1/125—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof water
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- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/12—Inorganic compounds
- C10L1/1275—Inorganic compounds sulfur, tellurium, selenium containing compounds
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- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/1802—Organic compounds containing oxygen natural products, e.g. waxes, extracts, fatty oils
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- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
- C10L1/1822—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
- C10L1/1826—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms poly-hydroxy
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- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/188—Carboxylic acids; metal salts thereof
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- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/188—Carboxylic acids; metal salts thereof
- C10L1/1881—Carboxylic acids; metal salts thereof carboxylic group attached to an aliphatic carbon atom
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- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/192—Macromolecular compounds
- C10L1/198—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid
- C10L1/1985—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid polyethers, e.g. di- polygylcols and derivatives; ethers - esters
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- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
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- C10L1/00—Liquid carbonaceous fuels
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- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
- C10L1/2222—(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates
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- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
- C10L1/224—Amides; Imides carboxylic acid amides, imides
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- C10L1/00—Liquid carbonaceous fuels
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- C10L1/14—Organic compounds
- C10L1/24—Organic compounds containing sulfur, selenium and/or tellurium
- C10L1/2431—Organic compounds containing sulfur, selenium and/or tellurium sulfur bond to oxygen, e.g. sulfones, sulfoxides
- C10L1/2437—Sulfonic acids; Derivatives thereof, e.g. sulfonamides, sulfosuccinic acid esters
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- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
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- C10L1/10—Liquid carbonaceous fuels containing additives
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Abstract
The present disclosure provides a low-blend aqueous coal slurry additive comprising: a first component, a second component, a third component, a fourth component, a fifth component, a sixth component, and a seventh component; wherein the first component consists of a reducing agent and first softened water; the second component consists of unsaturated monocarboxylic acid, unsaturated monocarboxylic acid derivative monomer, chain transfer agent and second softened water; the third component consists of a macromonomer, an oxidant and third softened water; the fourth component consists of a material A and fourth softened water; the fifth component consists of a material B and fifth softened water; the sixth component is selected from one or more of organic siloxane, polyether, silicon and oil composite, amine, imine and amide; the seventh component consists of a material C and sixth softened water, wherein the material C is selected from one or more of sodium hydroxide, sodium carbonate, sodium silicate and sodium acetate. The disclosure also provides a preparation method of the low-doping water coal slurry additive.
Description
Technical Field
The disclosure relates to a low-doping water coal slurry additive and a preparation method thereof.
Background
The advent of coal water slurry originated from the world petroleum energy crisis in the 70's of the 20 th century. At the moment, after the economic decline of the petroleum energy crisis in the world, the petroleum and natural gas are consciously recognized as clean energy, and are not inexhaustible, and abundant coal is still a long-term reliable main energy.
However, the historical training of the traditional coal burning method to cause serious atmospheric pollution is not reproducible. Coal liquefaction, gasification and slurrying are thus the subject of widespread attention in advanced industrial countries. The coal water slurry is a low-pollution, high-efficiency, pipeline-transportable, oil-substituted coal-based fluid fuel obtained by physical processing of about 65% of coal, 34% of water and 1% of additives, and can be used as a novel raw material for producing synthesis gas. On the basis of keeping the original physical and chemical properties of coal, the coal has the same fluidity and stability as petroleum, and is known as a liquid coal product. The traditional combustion mode of coal is changed, and the great environment-friendly and energy-saving advantages are displayed.
Because the coal water slurry is a solid-liquid two-phase dispersion system, a small amount of additive is added to prevent precipitation, so that the coal water slurry can achieve the aim of shear thinning on one hand, and coal dust particles are prevented from agglomerating on the other hand, and one of the core technologies of the coal water slurry technology is the coal water slurry additive technology. The coal water slurry additives commonly used in the prior art comprise lignosulfonate series, humate series, acrylate series, naphthalene sulfonate series and the like, which generally account for about 1-6% of the coal amount, and the coal water slurry additives have the problems of poor adaptability, unsatisfactory slurry forming effect, poor stability, easy generation of hard precipitate, large mixing amount and the like more or less, so that the further development of the coal water slurry technology in China is restricted.
Therefore, the development of the coal water slurry additive which has low mixing amount, wide adaptability, excellent dispersibility and stability, can obviously improve the slurry concentration of the coal water slurry, the rheological property of shear thinning, the stability and the atomizing combustion performance has wide market prospect and value, and is an effective measure for promoting the clean utilization of coal.
Disclosure of Invention
In order to solve one of the technical problems, the present disclosure provides a low-doped aqueous coal slurry additive and a preparation method thereof.
According to one aspect of the present disclosure, there is provided a low-blend aqueous coal slurry additive comprising: a first component, a second component, a third component, a fourth component, a fifth component, a sixth component, and a seventh component;
wherein, the first component consists of a reducing agent and first softened water, wherein the weight part of the reducing agent is 3-8 parts; the weight part of the first softened water is 50-150 parts;
the second component consists of unsaturated monocarboxylic acid, an unsaturated monocarboxylic acid derivative monomer, a chain transfer agent and second softened water, wherein the weight parts of the unsaturated monocarboxylic acid and the unsaturated monocarboxylic acid derivative monomer are 10-50 parts; 1-6 parts of chain transfer agent; the weight part of the second softened water is 50-200 parts;
the third component consists of a macromonomer, an oxidant and third softened water, wherein the macromonomer is 200-600 parts by weight; 1-5 parts of the oxidant by weight; the weight part of the third softened water is 200-500 parts;
the fourth component consists of a material A and fourth softened water, wherein the weight part of the material A is 10-50 parts; the weight part of the fourth softened water is 200-500 parts; wherein the material A is selected from one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose polyvinyl alcohol;
the fifth component consists of a material B and fifth softened water, wherein the weight part of the material B is 5-20 parts, and the weight part of the fifth softened water is 200-500 parts; wherein the material B is selected from one or more of dodecylbenzene sulfonic acid ammonia, sodium dodecyl sulfate, sodium abietate and petroleum sulfonate;
the sixth component is one or more selected from organic siloxane, polyether, silicon and oil composite, amine, imine and amide, and the weight part of the sixth component is 5-50 parts;
the seventh component consists of a material C and sixth softened water, wherein the weight part of the material C is 50-100 parts; the weight part of the sixth softened water is 200-500 parts, wherein the material C is selected from one or more of sodium hydroxide, sodium carbonate, sodium silicate and sodium acetate.
According to the low-blend aqueous coal slurry additive of at least one embodiment of the present disclosure, the reducing agent is selected from at least one of vitamin VC, oxalic acid, and sodium thiosulfate.
A low-blend aqueous coal slurry additive according to at least one embodiment of the present disclosure, the unsaturated monocarboxylic acid is selected from acrylic acid or methacrylic acid; the chain transfer agent comprises thioglycolic acid.
The low-blend aqueous coal slurry additive according to at least one embodiment of the present disclosure, the macromonomer is selected from at least one of methallyl alcohol polyoxyethylene ether and prenyl alcohol polyoxyethylene ether; the oxidant is at least one of ammonium persulfate and hydrogen peroxide.
According to another aspect of the present disclosure, there is provided a method for preparing the low-doped coal-water slurry additive as described above, which comprises:
1) weighing first softened water, adding a reducing agent into the first softened water according to a proportion, and stirring for 5-30min at a stirring linear speed of more than 10m/s to obtain a first component;
2) weighing second softened water, adding unsaturated monocarboxylic acid, unsaturated monocarboxylic acid derivative monomer and chain transfer agent in the second softened water according to a proportion, and stirring for 5-30min at a stirring linear speed of more than 10m/s to obtain a second component;
3) adding third softening water into the reaction kettle, adding the macromonomer and the oxidant according to the proportion under the stirring state, stirring for 5-30min, wherein the stirring linear velocity is more than 10m/s, and preparing a third component;
4) keeping the stirring state of the third component, dripping the first component into the third component, and finishing the addition within 100-160 min; after the first component is dripped for 5-10min, the second component is dripped within 30-100min, and the stirring linear velocity is 5-10 m/s;
5) after the first component and the second component are dripped, continuously stirring for 10-60min at the stirring linear speed of 3-6 m/s;
6) weighing fourth softened water, adding the material A into the fourth softened water according to a proportion, and stirring for 30-60min at a stirring linear speed of 1-3m/s to obtain a fourth component;
7) weighing fifth softening water, adding the material B in the fifth softening water according to the proportion, and stirring for 10-15min at the stirring linear speed of 1-3m/s to obtain a fifth component;
8) weighing sixth softened water, adding the material C into the sixth softened water according to the proportion, and stirring for 10-15min at the stirring linear speed of 5-8m/s to obtain a seventh component;
9) keeping the stirring state of the mixture obtained in the step 5), simultaneously dripping the fourth component and the fifth component, finishing the addition within 10-30min, and controlling the stirring linear speed to be 3-6 m/s;
10) keeping the stirring state of the mixture obtained in the step 9), adding the sixth component, finishing the adding within 10-30min, and controlling the stirring linear speed to be 3-6 m/s;
11) keeping the stirring state of the mixture obtained in the step 10), dripping the seventh component, detecting the pH value of the solution at any time, stopping dripping the seventh component when the pH value reaches 9-11, and continuing stirring for 10-30min at the stirring linear speed of 3-6 m/s;
12) and (3) sieving the mixture obtained in the step 11) by a 200-300-mesh sieve to obtain the low-doping water coal slurry additive.
The technical scheme has the following beneficial effects:
(1) the coal water slurry additive provided by the invention has the advantages of easily available raw materials, no toxicity, no harm, little environmental pollution, safe use and environmental protection;
(2) the coal water slurry additive provided by the invention is synthesized at normal temperature, the energy consumption is low, and the preparation method is easy to operate;
(3) when the coal water slurry additive is prepared, the coal water slurry additive has the advantages of high slurry concentration, low viscosity, good fluidity and stability, wide adaptability, suitability for complex pulping working conditions and capability of remarkably improving the atomization combustion performance;
(4) the low-dosage additive of the coal water slurry additive provided by the invention usually accounts for about 0.1-1% of the coal amount, and the dosage of the common additive accounts for 1-6% of the coal amount, so that the dosage of the coal water slurry additive is greatly saved.
Detailed Description
The present disclosure will be described in further detail with reference to the following embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure.
Example 1
The embodiment provides a low-doped aqueous coal slurry additive, which comprises the following components: a first component, a second component, a third component, a fourth component, a fifth component, a sixth component, and a seventh component;
wherein, the first component consists of a reducing agent and first softened water, wherein the weight part of the reducing agent is 3-8 parts; 50-150 parts of first softened water;
the second component consists of unsaturated monocarboxylic acid, an unsaturated monocarboxylic acid derivative monomer, a chain transfer agent and second softened water, wherein the weight parts of the unsaturated monocarboxylic acid and the unsaturated monocarboxylic acid derivative monomer are 10-50 parts; 1-6 parts of chain transfer agent; the weight part of the second softened water is 50-200 parts;
the third component consists of a macromonomer, an oxidant and third softened water, wherein the macromonomer is 200-600 parts by weight; 1-5 parts of the oxidant by weight; the weight part of the third softened water is 200-500 parts;
the fourth component consists of a material A and fourth softened water, wherein the weight part of the material A is 10-50 parts; the weight part of the fourth softened water is 200-500 parts; wherein the material A is selected from one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose polyvinyl alcohol;
the fifth component consists of a material B and fifth softened water, wherein the weight part of the material B is 5-20 parts, and the weight part of the fifth softened water is 200-500 parts; wherein the material B is selected from one or more of dodecylbenzene sulfonic acid ammonia, sodium dodecyl sulfate, sodium abietate and petroleum sulfonate;
the sixth component is one or more selected from organic siloxane, polyether, silicon and oil composite, amine, imine and amide, and the weight part of the sixth component is 5-50 parts;
the seventh component consists of a material C and sixth softened water, wherein the weight part of the material C is 50-100 parts; the weight part of the sixth softened water is 200-500 parts, wherein the material C is selected from one or more of sodium hydroxide, sodium carbonate, sodium silicate and sodium acetate.
Preferably, the reducing agent is selected from at least one of vitamin VC, oxalic acid and sodium thiosulfate.
More preferably, the unsaturated monocarboxylic acid is selected from acrylic acid or methacrylic acid; the chain transfer agent comprises thioglycolic acid.
In the embodiment, the macromonomer is selected from at least one of methallyl alcohol polyoxyethylene ether and isoamylol alcohol polyoxyethylene ether; the oxidant is at least one of ammonium persulfate and hydrogen peroxide.
Example 2
The embodiment provides a low-doped aqueous coal slurry additive, which comprises the following components: a first component, a second component, a third component, a fourth component, a fifth component, a sixth component, and a seventh component;
the first component consists of vitamin VC and first softened water, wherein the weight part of the vitamin VC is 5 parts; the weight part of the first softened water is 100 parts;
the second component consists of acrylic acid, an acrylic acid derivative monomer, a chain transfer agent and second softened water, wherein the weight part of the acrylic acid and the acrylic acid derivative monomer is 20 parts; the weight part of the chain transfer agent is 3 parts; the weight part of the second softened water is 150 parts;
the third component consists of 300 parts by weight of methallyl alcohol polyoxyethylene ether, hydrogen peroxide and third softened water; 3 parts of hydrogen peroxide; the weight part of the third softened water is 280 parts;
the fourth component consists of hydroxypropyl methyl cellulose and fourth softened water, and the weight part of the hydroxypropyl methyl cellulose is 10 parts; 300 parts of fourth softened water;
the fifth component consists of 10 parts by weight of sodium dodecyl benzene sulfonate and 300 parts by weight of fifth softened water;
the sixth component is selected from organic siloxane, and the weight portion of the organic siloxane is 30 portions;
the seventh component consists of 50 parts by weight of sodium hydroxide and sixth softened water; the weight part of the sixth softened water is 200 parts.
The preparation method of the low-doped aqueous coal slurry additive of the example 2 comprises the following steps:
1) weighing 100 parts by weight of first softened water, adding 5 parts by weight of vitamin VC into the first softened water, and stirring for 20min to obtain a first component;
2) weighing 150 parts of second softened water, and adding 20 parts by weight of acrylic acid and acrylic acid derivative monomers and 3 parts by weight of chain transfer agent into the second softened water; stirring for 10min to obtain the second component;
3) adding 280 parts by weight of third softened water into a reaction kettle, adding 300 parts by weight of methallyl alcohol polyoxyethylene ether and 3 parts by weight of hydrogen peroxide under a stirring state, and stirring for 20min to prepare a third component;
4) keeping the stirring state of the third component, dripping the first component into the third component, and finishing the addition within 120 min; after the first component is dripped for 6min, the second component is dripped within 60 min;
5) after the first component and the second component are dripped, stirring is continued for 30 min;
6) weighing 300 parts by weight of fourth softened water, adding 10 parts by weight of hydroxypropyl methyl cellulose into the fourth softened water, and stirring for 45min to obtain a fourth component;
7) weighing 300 parts by weight of fifth softened water, adding 10 parts by weight of sodium dodecyl benzene sulfonate into the fifth softened water, and stirring for 15min to obtain a fifth component;
8) weighing 200 parts by weight of sixth softened water, adding 50 parts by weight of sodium hydroxide into the sixth softened water, and stirring for 10min to obtain a seventh component;
9) keeping the stirring state of the mixture obtained in the step 5), and simultaneously dropwise adding the fourth component and the fifth component within 20 min;
10) keeping the stirring state of the mixture obtained in the step 9), adding the sixth component, and finishing the addition within 20 min;
11) keeping the stirring state of the mixture obtained in the step 10), dripping the seventh component, detecting the pH value of the solution at any time, stopping dripping the seventh component when the pH value reaches 9-11, and continuing stirring for 10 min;
12) and (3) sieving the mixture obtained in the step 11) by using a 300-mesh sieve to obtain the low-doping water coal slurry additive.
Example 2
The embodiment provides a low-doped aqueous coal slurry additive, which comprises the following components: a first component, a second component, a third component, a fourth component, a fifth component, a sixth component, and a seventh component;
the first component consists of vitamin VC and first softened water, wherein the weight part of the vitamin VC is 5 parts; the weight part of the first softened water is 100 parts;
the second component consists of acrylic acid, an acrylic acid derivative monomer, thioglycollic acid and second softened water, wherein the weight part of the acrylic acid and the acrylic acid derivative monomer is 20 parts; 3 parts of thioglycollic acid; the weight part of the second softened water is 150 parts;
the third component consists of 300 parts by weight of methallyl alcohol polyoxyethylene ether, hydrogen peroxide and third softened water; 3 parts of hydrogen peroxide; the weight part of the third softened water is 280 parts;
the fourth component consists of hydroxypropyl methyl cellulose and fourth softened water, and the weight part of the hydroxypropyl methyl cellulose is 10 parts; 300 parts of fourth softened water;
the fifth component consists of 10 parts by weight of sodium dodecyl benzene sulfonate and 300 parts by weight of fifth softened water;
the sixth component is selected from organic siloxane, and the weight portion of the organic siloxane is 30 portions;
the seventh component consists of 50 parts by weight of sodium hydroxide and sixth softened water; the weight part of the sixth softened water is 200 parts.
The preparation method of the low-doped aqueous coal slurry additive of the example 2 comprises the following steps:
1) weighing 100 parts by weight of first softened water, adding 5 parts by weight of vitamin VC into the first softened water, and stirring for 20min to obtain a first component;
2) weighing 150 parts of second softened water, and adding 20 parts by weight of acrylic acid and acrylic acid derivative monomers and 3 parts by weight of thioglycolic acid into the second softened water; stirring for 10min to obtain the second component;
3) adding 280 parts by weight of third softened water into a reaction kettle, adding 300 parts by weight of methallyl alcohol polyoxyethylene ether and 3 parts by weight of hydrogen peroxide under a stirring state, and stirring for 20min to prepare a third component;
4) keeping the stirring state of the third component, dripping the first component into the third component, and finishing the addition within 120 min; after the first component is dripped for 6min, the second component is dripped within 60 min;
5) after the first component and the second component are dripped, stirring is continued for 30 min;
6) weighing 300 parts by weight of fourth softened water, adding 10 parts by weight of hydroxypropyl methyl cellulose into the fourth softened water, and stirring for 40min to obtain a fourth component;
7) weighing 300 parts by weight of fifth softened water, adding 10 parts by weight of sodium dodecyl benzene sulfonate into the fifth softened water, and stirring for 10min to obtain a fifth component;
8) weighing 200 parts by weight of sixth softened water, adding 50 parts by weight of sodium hydroxide into the sixth softened water, and stirring for 15min to obtain a seventh component;
9) keeping stirring state in the mixture obtained in the step 5), and simultaneously dropwise adding the fourth component and the fifth component within 20 min;
10) keeping the stirring state of the mixture obtained in the step 9), adding the sixth component, and finishing the addition within 20 min;
11) keeping the stirring state of the mixture obtained in the step 10), dripping the seventh component, detecting the pH value of the solution at any time, stopping dripping the seventh component when the pH value reaches 9-11, and continuing stirring for 10 min;
12) and (3) sieving the mixture obtained in the step 11) by using a 300-mesh sieve to obtain the low-doping water coal slurry additive.
Example 3
The embodiment provides a low-doped aqueous coal slurry additive, which comprises the following components: a first component, a second component, a third component, a fourth component, a fifth component, a sixth component, and a seventh component;
the first component consists of sodium thiosulfate and first softened water, wherein the weight part of the sodium thiosulfate is 4 parts; the weight part of the first softened water is 50 parts;
the second component consists of acrylic acid, acrylic acid derivative monomers, thioglycollic acid and second softened water, wherein the acrylic acid and the acrylic acid derivative monomers account for 30 parts by weight; 3 parts of thioglycollic acid; the weight part of the second softened water is 200 parts;
the third component consists of isoamylene alcohol polyoxyethylene ether, ammonium sulfate and third softened water, wherein the weight part of the isoamylene alcohol polyoxyethylene ether is 200 parts; 5 parts of ammonium sulfate; the weight part of the third softened water is 500 parts;
the fourth component consists of polyvinyl alcohol and fourth softened water, and the weight part of the polyvinyl alcohol is 10 parts; the fourth softened water accounts for 500 parts by weight;
the fifth component comprises 20 parts by weight of sodium abietate and 500 parts by weight of fifth softened water;
the sixth component is selected from silicon and oil, and the weight portion of the sixth component is 10 portions;
the seventh component consists of 50 parts by weight of sodium silicate and sixth softened water; the weight part of the sixth softened water is 500 parts.
The preparation method of the low-doped aqueous coal slurry additive of the example 3 comprises the following steps:
1) weighing 50 parts by weight of first softened water, adding 4 parts by weight of sodium thiosulfate into the first softened water, and stirring for 10min to obtain a first component;
2) weighing 200 parts of second softened water, and adding 30 parts by weight of acrylic acid and acrylic acid derivative monomers and 3 parts by weight of thioglycolic acid into the second softened water; stirring for 20min to obtain a second component;
3) adding 500 parts by weight of third softened water into a reaction kettle, adding 200 parts by weight of prenyl polyoxyethylene ether and 5 parts by weight of ammonium sulfate under stirring, and stirring for 10min to obtain a third component;
4) keeping the stirring state of the third component, dripping the first component into the third component, and finishing the addition within 100 min; after the first component is dropwise added for 10min, the second component is dropwise added within 50 min;
5) after the first component and the second component are dripped, continuously stirring for 50 min;
6) weighing 500 parts by weight of fourth softened water, adding 10 parts by weight of polyvinyl alcohol into the fourth softened water, and stirring for 60min to obtain a fourth component;
7) weighing 500 parts by weight of fifth softened water, adding 20 parts by weight of sodium abietate into the fifth softened water, and stirring for 10min to obtain a fifth component;
8) weighing 500 parts by weight of sixth softened water, adding 50 parts by weight of sodium silicate into the sixth softened water, and stirring for 10min to obtain a seventh component;
9) keeping the stirring state of the mixture obtained in the step 5), and simultaneously dropwise adding the fourth component and the fifth component within 10 min;
10) keeping the stirring state of the mixture obtained in the step 9), adding the sixth component, and finishing the addition within 10 min;
11) keeping the stirring state of the mixture obtained in the step 10), dripping the seventh component, detecting the pH value of the solution at any time, stopping dripping the seventh component when the pH value reaches 9-11, and continuing stirring for 30 min;
12) and (3) sieving the mixture obtained in the step 11) by a 200-mesh sieve to obtain the low-doping water coal slurry additive.
Example 4
The embodiment provides a low-doped aqueous coal slurry additive, which comprises the following components: a first component, a second component, a third component, a fourth component, a fifth component, a sixth component, and a seventh component;
the first component consists of 8 parts by weight of oxalic acid and first softened water; the weight part of the first softened water is 100 parts;
the second component consists of methacrylic acid, a methacrylic acid derivative monomer, thioglycollic acid and second softened water, wherein the weight part of the methacrylic acid and the methacrylic acid derivative monomer is 20 parts; 3 parts of thioglycollic acid; the weight part of the second softened water is 100 parts;
the third component consists of 300 parts by weight of isopentenol polyoxyethylene ether, ammonium persulfate and third softened water; 3 parts of ammonium persulfate by weight; 300 parts of third softened water;
the fourth component consists of hydroxypropyl cellulose and fourth softened water, and the weight part of the hydroxypropyl cellulose is 20 parts; the fourth softened water accounts for 500 parts by weight;
the fifth component consists of 10 parts by weight of petroleum sulfonate and 200 parts by weight of fifth softened water;
the sixth component is selected from organic siloxane, and the weight portion of the organic siloxane is 30 portions;
the seventh component consists of sodium carbonate and sixth softened water, and the weight part of the sodium carbonate is 60 parts; the weight part of the sixth softened water is 300 parts.
The preparation method of the low-doped aqueous coal slurry additive of the example 4 comprises the following steps:
1) weighing 100 parts by weight of first softened water, adding 8 parts by weight of oxalic acid into the first softened water, and stirring for 20min to obtain a first component;
2) weighing 100 parts of second softened water, and adding 20 parts by weight of methacrylic acid and methacrylic acid derivative monomers and 3 parts by weight of thioglycolic acid into the second softened water; stirring for 20min to obtain a second component;
3) adding 300 parts by weight of third softened water into a reaction kettle, adding 300 parts by weight of prenyl polyoxyethylene ether and 3 parts by weight of ammonium persulfate under the stirring state, and stirring for 20min to prepare a third component;
4) keeping the stirring state of the third component, dripping the first component into the third component, and finishing the addition within 100 min; after the first component is dropwise added for 10min, the second component is dropwise added within 80 min;
5) after the first component and the second component are dripped, stirring is continued for 30 min;
6) weighing 500 parts by weight of fourth softened water, adding 20 parts by weight of hydroxypropyl cellulose into the fourth softened water, and stirring for 50min to obtain a fourth component;
7) weighing 200 parts by weight of fifth softened water, adding 10 parts by weight of petroleum sulfonate into the fifth softened water, and stirring for 12min to obtain a fifth component;
8) weighing 300 parts by weight of sixth softened water, adding 60 parts by weight of sodium carbonate into the sixth softened water, and stirring for 13min to obtain a seventh component;
9) keeping the stirring state of the mixture obtained in the step 5), and simultaneously dropwise adding the fourth component and the fifth component within 20 min;
10) keeping the stirring state of the mixture obtained in the step 9), adding the sixth component, and finishing the addition within 15 min;
11) keeping the stirring state of the mixture obtained in the step 10), dripping the seventh component, detecting the pH value of the solution at any time, stopping dripping the seventh component when the pH value reaches 9-11, and continuing stirring for 20 min;
12) and (3) sieving the mixture obtained in the step 11) by using a 300-mesh sieve to obtain the low-doping water coal slurry additive.
Example 5
Example 5 provides a method of making a low-loading aqueous coal slurry additive as described in examples 1-4, comprising:
1) weighing first softened water, adding a reducing agent into the first softened water according to a proportion, stirring for 5-30min, wherein the stirring linear velocity is more than 10m/s, and obtaining a first component.
2) Weighing second softened water, adding unsaturated monocarboxylic acid, an unsaturated monocarboxylic acid derivative monomer and a chain transfer agent into the second softened water according to a ratio, stirring for 5-30min, wherein the stirring linear speed is more than 10m/s, and obtaining a second component;
3) adding third softened water into the reaction kettle, adding the macromonomer and the oxidant according to the proportion under the stirring state, stirring for 5-30min, wherein the stirring linear speed is more than 10m/s, and preparing a third component;
4) keeping the stirring state of the third component, dripping the first component into the third component, and finishing the addition within 100-160 min; after the first component is dripped for 5-10min, the second component is dripped within 30-100min, and the stirring linear velocity is 5-10 m/s; the sequential dripping is to maintain the reducibility of the solution and ensure the smooth synthesis;
5) after the first component and the second component are added dropwise, continuously stirring for 10-60min at the stirring linear speed of 3-6m/s, wherein the continuous stirring mainly has the effect of ensuring the uniformity and the thoroughness of the reaction;
6) weighing fourth softened water, adding the material A into the fourth softened water according to a proportion, stirring for 30-60min at a stirring linear speed of 1-3m/s to obtain a fourth component, and diluting to prevent agglomeration when the material is directly added into the mixture obtained in the step 5);
7) weighing fifth softening water, adding the material B into the fifth softening water according to the proportion, stirring for 10-15min at the stirring linear speed of 1-3m/s to obtain a fifth component, and diluting to prevent agglomeration when the material is directly added into the mixture obtained in the step 5);
8) weighing sixth softened water, adding the material C into the sixth softened water according to a proportion, stirring for 10-15min at a stirring linear speed of 5-8m/s to obtain a seventh component, and diluting to prevent agglomeration when the material is directly added into the mixture obtained in the step 5);
9) in the mixture obtained in the step 5), keeping the stirring state, simultaneously dripping the fourth component and the fifth component, and finishing the dripping within 10-30min, wherein the stirring linear speed is 3-6 m/s;
10) keeping the stirring state in the mixture obtained in the step 9), adding the sixth component, finishing the adding within 10-30min, and ensuring that the prepared solution forms uniform liquid without bubbles at the stirring linear speed of 3-6 m/s;
11) in the mixture obtained in the step 10), keeping a stirring state, dropwise adding the seventh component, detecting the pH value of the solution at any time, stopping dropwise adding the seventh component when the pH value reaches 9-11, then continuously stirring for 10-30min at a stirring linear speed of 3-6m/s, wherein the pH value is at the moment, the stability of the system is better, and the anti-precipitation effect is better;
12) and (3) sieving the mixture obtained in the step 11) by a 200-300-mesh sieve to obtain the low-doping water coal slurry additive.
The low-doping water coal slurry additive prepared in the embodiments 2-4 of the invention, water and coal powder are prepared into water coal slurry, performance tests are respectively carried out, and the test results are shown in table 1:
the fluidity test adopts an eye measurement method, the prepared coal water slurry is slowly poured into another beaker at 25 ℃, the slurry flow pattern is visually measured and is divided into A, B, C, D grades according to the flowing property, A-uninterrupted continuous flowing, B-interrupted continuous flowing, C-interrupted discontinuous flowing and D-no flowing; the viscosity test refers to GB/T18855-2014; the stability of the coal water slurry is represented by a water precipitation rate, a proper amount of the coal water slurry is poured into a flat-bottom test tube, the flat-bottom test tube is sealed and kept stand for 5h and 48h, the height of a water precipitation layer and the total height of the slurry are respectively measured by using a vernier caliper, the height of a clear water layer precipitated after the water precipitation rate is 5h and 48h accounts for the total height of the coal water slurry, and the lower the water precipitation rate is, the better the stability of the coal water slurry on the surface is.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (5)
1. A low-doped aqueous coal slurry additive, which is characterized by comprising: a first component, a second component, a third component, a fourth component, a fifth component, a sixth component, and a seventh component;
the first component consists of a reducing agent and first softened water, wherein the weight part of the reducing agent is 3-8 parts; the weight part of the first softened water is 50-150 parts;
the second component consists of unsaturated monocarboxylic acid, an unsaturated monocarboxylic acid derivative monomer, a chain transfer agent and second softened water, wherein the weight parts of the unsaturated monocarboxylic acid and the unsaturated monocarboxylic acid derivative monomer are 10-50 parts; 1-6 parts of chain transfer agent; the weight part of the second softened water is 50-200 parts;
the third component consists of a macromonomer, an oxidant and third softened water, wherein the macromonomer is 200-600 parts by weight; 1-5 parts of the oxidant by weight; the weight portion of the third softened water is 200-500 portions.
The fourth component consists of a material A and fourth softened water, wherein the weight part of the material A is 10-50 parts; the weight part of the fourth softened water is 200-500 parts; wherein the material A is selected from one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose polyvinyl alcohol;
the fifth component consists of a material B and fifth softened water, wherein the weight part of the material B is 5-20 parts, and the weight part of the fifth softened water is 200-500 parts; wherein the material B is selected from one or more of dodecylbenzene sulfonic acid ammonia, sodium dodecyl sulfate, sodium abietate and petroleum sulfonate;
the sixth component is one or more selected from organic siloxane, polyether, silicon and oil composite, amine, imine and amide, and the weight part of the sixth component is 5-50 parts;
the seventh component consists of a material C and sixth softened water, wherein the weight part of the material C is 50-100 parts; the weight part of the sixth softened water is 200-500 parts, wherein the material C is selected from one or more of sodium hydroxide, sodium carbonate, sodium silicate and sodium acetate.
2. The low-blend aqueous coal slurry additive of claim 1 wherein the reducing agent is selected from at least one of vitamin VC, oxalic acid, and sodium thiosulfate.
3. The low-blend aqueous coal slurry additive of claim 1 wherein said unsaturated monocarboxylic acid is selected from the group consisting of acrylic acid or methacrylic acid; the chain transfer agent comprises thioglycolic acid.
4. The low-blend aqueous coal slurry additive of claim 1, wherein the macromonomer is selected from at least one of methallyl alcohol polyoxyethylene ether and prenyl alcohol polyoxyethylene ether; the oxidant is at least one of ammonium persulfate and hydrogen peroxide.
5. A method for preparing the low-dosage additive according to any one of claims 1 to 4, comprising:
1) weighing first softened water, adding a reducing agent into the first softened water according to a proportion, and stirring for 5-30min at a stirring linear speed of more than 10m/s to obtain a first component;
2) weighing second softened water, adding unsaturated monocarboxylic acid, unsaturated monocarboxylic acid derivative monomer and chain transfer agent in the second softened water according to a proportion, and stirring for 5-30min at a stirring linear speed of more than 10m/s to obtain a second component;
3) adding third softening water into the reaction kettle, adding the macromonomer and the oxidant according to the proportion under the stirring state, stirring for 5-30min, wherein the stirring linear velocity is more than 10m/s, and preparing a third component;
4) keeping the stirring state of the third component, dripping the first component into the third component, and finishing the addition within 100-160 min; after the first component is dripped for 5-10min, the second component is dripped within 30-100min, and the stirring linear velocity is 5-10 m/s;
5) after the first component and the second component are dripped, continuously stirring for 10-60min at the stirring linear speed of 3-6 m/s;
6) weighing fourth softened water, adding the material A into the fourth softened water according to a proportion, and stirring for 30-60min at a stirring linear speed of 1-3m/s to obtain a fourth component;
7) weighing fifth softening water, adding the material B in the fifth softening water according to the proportion, and stirring for 10-15min at the stirring linear speed of 1-3m/s to obtain a fifth component;
8) weighing sixth softened water, adding the material C into the sixth softened water according to the proportion, and stirring for 10-15min at the stirring linear speed of 5-8m/s to obtain a seventh component;
9) in the mixture obtained in the step 5), keeping the stirring state, simultaneously dripping the fourth component and the fifth component, and finishing the dripping within 10-30min, wherein the stirring linear speed is 3-6 m/s;
10) keeping the stirring state of the mixture obtained in the step 9), adding the sixth component, finishing the adding within 10-30min, and controlling the stirring linear speed to be 3-6 m/s;
11) keeping the stirring state of the mixture obtained in the step 10), dripping the seventh component, detecting the pH value of the solution at any time, stopping dripping the seventh component when the pH value reaches 9-11, and continuing stirring for 10-30min at the stirring linear speed of 3-6 m/s;
12) and (3) sieving the mixture obtained in the step 11) by a 200-300-mesh sieve to obtain the low-doping water coal slurry additive.
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