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Coal water slurry additive and preparation method thereof

An additive and coal-water slurry technology, applied in the field of chemistry, can solve the problems of complex preparation process, large doping amount and high cost, and achieve the effects of less dosage, good dispersion performance and good stability

Inactive Publication Date: 2018-06-29
JIANGSU SOPO GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current technology has the disadvantages of high cost, complicated preparation process, low performance, and large doping amount.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] The invention will be further described below by way of examples.

[0025] A coal water slurry additive, comprising: 1 part of acrylic acid, 3.5-4 parts of polyethylene glycol acrylate, 5 parts of dispersant, the dispersant is sodium carboxymethyl cellulose, acrylamide, styrene-based sulfonic acid One or more of sodium, 0.5 part of ammonium persulfate, and 0.05 part of carbonate, wherein the carbonate is one or more of kaolin, sodium carbonate, potassium carbonate, and calcium carbonate.

[0026] A preparation method for coal water slurry additive, comprising steps:

[0027] (1) Heat the mixture of acrylic acid, polyethylene glycol, p-diphenol and concentrated sulfuric acid with a mass ratio of 3-4:1:0.045:0.05 to 90-100°C, and react at constant temperature for 2-3 hours to obtain polyethylene glycol acrylate ;

[0028] (2) Heat acrylic acid with a mass ratio of 1:3.5 to 4:5:0.5:0.05, polyethylene glycol acrylate obtained above, sodium styrene sulfonate, ammonium pers...

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Abstract

The invention belongs to the field of chemistry, specifically relates to an additive, and more specifically relates to a coal water slurry additive and a preparation method thereof. The coal water slurry additive is prepared from the following raw materials in parts by mass: 1 part of acrylic acid, 3.5 to 4 parts of polyethylene glycol acetate, 5 parts of a dispersing agent, 0.5 part of ammonium persulfate and 0.5 part of carbonate. The preparation method comprises the following steps: heating a mixture of the acrylic acid, polyethylene glycol, para-diphenol and concentrated sulfuric acid, andkeeping constant temperature, thus obtaining the polyethylene glycol acetate; then heating the acrylic acid, the obtained polyethylene glycol acetate, sodium styryl sulfonate, the ammonium persulfateand the carbonate, and keeping the constant temperature; cooling, and regulating a pH (Potential of Hydrogen) value, thus obtaining the coal water slurry additive. The coal water slurry additive disclosed by the invention is less in dosage and good in dispersity, and coal water slurry which is high in concentration, good in fluidity and suitable for atomization can be prepared.

Description

technical field [0001] The invention belongs to the field of chemistry, specifically an additive, more specifically a coal water slurry additive and a preparation method thereof. Background technique [0002] Coal water slurry is a new type of low-pollution oil-substituting fuel. It disperses coal powder particles in water by physical methods and transforms them into fluid fuels. Coal-water slurry technology, as an economical, clean and efficient coal utilization technology, has been vigorously developed in my country. As a liquid fuel, coal-water slurry has the same fluidity and stability as oil, and can be pumped and fogged like oil. The combustion efficiency is as high as 98%, and the load adjustment range is large, and it has the characteristics of energy saving, low pollution emission, convenient storage and transportation. It can be widely used in industrial boilers, power station boilers, industrial kilns, etc. as a fuel to replace coal, oil, and gas. Its application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/188C10L1/198C10L1/224C10L1/24C10L1/12C10L1/32
CPCC10L1/10C10L1/1216C10L1/1275C10L1/1881C10L1/1983C10L1/1985C10L1/224C10L1/2437C10L1/326
Inventor 朱桂生王忠华范俭青符微微胡宗贵邵守言刘玲唐丽
Owner JIANGSU SOPO GRP
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