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Cationic coal water slurry additive and preparation method thereof

A cationic, coal-water slurry technology, applied in the direction of fuel, liquid carbon-containing fuel, petroleum industry, etc., can solve the problems of unstable performance, toxicity, high price, etc., and achieve low production cost, easy control, and strong adaptability Effect

Active Publication Date: 2019-01-01
WUHUAN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the performance of naphthalene series is relatively stable, but the price is high and toxic; lignin series and humic acid series are cheap, but the performance is unstable

Method used

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  • Cationic coal water slurry additive and preparation method thereof
  • Cationic coal water slurry additive and preparation method thereof
  • Cationic coal water slurry additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 2 parts by mass of acrylamide and 8 parts by mass of methacryloyloxyethyltrimethylammonium chloride into the reactor, add 88 parts by mass of water, and stir to dissolve them all. Nitrogen was passed to remove the dissolved oxygen in the reaction solution, the temperature was gradually raised to 40°C, and 2 parts by mass of initiator azobisisobutylamidine hydrochloride solution (2.5% mass concentration) was added, stirred and reacted for 6 hours and then cooled to obtain poly The aqueous solution of (acrylamide-methacryloyloxyethyltrimethylammonium chloride) is directly used as the coal water slurry additive YT-1. The measured weight average molecular weight of poly(acrylamide-methacryloxyethyltrimethylammonium chloride) was 285,000.

Embodiment 2

[0029] Add 1 mass part of methacrylamide and 9 mass parts of methacryloxyethyl dimethyl benzyl ammonium chloride into the reactor, add 88 mass parts of water, and stir to dissolve them all. Nitrogen was passed to remove the dissolved oxygen in the reaction solution, the temperature was gradually raised to 70° C., and 2 mass parts of initiator azobisisobutylimidazoline hydrochloride solution (2.5% mass concentration) was added, stirred and reacted for 8 hours and then cooled to obtain poly The aqueous solution of (methacrylamide-methacryloxyethyl dimethyl benzyl ammonium chloride) is directly used as the coal water slurry additive YT-2. The measured weight average molecular weight of poly(methacrylamide-methacryloxyethyl dimethyl benzyl ammonium chloride) is 209,000.

Embodiment 3

[0031] Add 10 parts by mass of acryloyloxyethyltrimethylammonium chloride into the reactor, add 90 parts by mass of water, and stir to dissolve it completely. Remove the dissolved oxygen in the reaction solution, gradually raise the temperature to 80°C, add 2 parts by mass of initiator azobisisobutylamidine hydrochloride solution (2.5% mass concentration), stir and react for 10 hours and then cool to obtain polypropylene The aqueous solution of acyloxyethyltrimethylammonium chloride is directly used as the coal water slurry additive YT-3. The measured weight average molecular weight of polyacryloxyethyltrimethylammonium chloride was 121,000.

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Abstract

The invention relates to a cationic coal-water slurry additive and a preparation method thereof, which solves the problems that the slurry concentration and stability of the existing coal-water slurry additive need to be improved and the addition amount is large. The technical solution comprises dissolving nonionic monomers and cationic monomers in an aqueous solution, and carrying out a copolymerization reaction in the presence of a free radical initiator to obtain a solution of the compound described in claim 1, wherein the nonionic monomer is an acrylamide polymer A monomer, the cationic monomer is an allyl-containing quaternary ammonium salt monomer; the mass ratio of the nonionic monomer to the cationic monomer is 0-1:4. The invention has the advantages of simple process and convenient operation, less added additives, high slurry concentration of coal slurry, wide adaptability of coal types, and antibacterial effect.

Description

technical field [0001] The invention relates to a coal water slurry additive and a preparation method thereof, in particular to a cationic coal water slurry additive and a preparation method thereof. Background technique [0002] my country's resource characteristics of rich coal, poor oil, and little gas determine that coal will still occupy a pillar position in the energy structure. However, with the frequent occurrence of severe smog across the country in recent years, all levels of the country have paid close attention to the causes of smog, and have also put forward higher requirements for the clean utilization of coal. [0003] Coal water slurry is a clean coal-based liquid fuel, which is generally prepared from certain particle size coal (about 60% to 70%), water (about 30% to 40%), and a small amount of additives through a certain processing technology. It not only maintains the original physical and chemical properties of coal, but also has good rheology, thixotrop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/34C08F220/56C08F120/34C10L1/32C10L1/23
CPCC08F120/34C08F220/34C10L1/234C10L1/326C10L2250/04C08F220/56
Inventor 商宽祥卢文新陈风敬夏吴徐建民蔡斌王志刚张大洲张琦刘佳
Owner WUHUAN ENG