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Coal water slurry additive and preparation method and application thereof

A coal-water slurry and additive technology, applied in the petroleum industry, liquid carbon-containing fuel, fuel, etc., can solve the problems of high viscosity of coal slurry, easy precipitation, poor fluidity, etc., to improve hydrophilicity and easy control of the reaction process , the effect of reducing production costs

Active Publication Date: 2020-12-15
四川路加四通科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a coal-water slurry additive to solve the problems of high viscosity, poor fluidity and easy precipitation of the existing coal slurry additives during the use process

Method used

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  • Coal water slurry additive and preparation method and application thereof
  • Coal water slurry additive and preparation method and application thereof
  • Coal water slurry additive and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A coal water slurry additive, in parts by weight, comprises the following components:

[0032] 15 parts of polyoxyethylene ester, 5 parts of polyacrylamide, 42 parts of metasilicate, 83 parts of inorganic salt, 7 parts of organic bentonite, and 2 parts of polyalcoholamine.

[0033] The preparation method of this embodiment. Include the following steps:

[0034] S1, mix each material according to the above ratio, stir and mix;

[0035] S2, adding a pH regulator to adjust the pH value of the mixed material in step S1 to 8.0.

[0036] In this embodiment, the inorganic salt is sodium chloride, the pH regulator is sodium bicarbonate, and the metasilicate is sodium metasilicate.

Embodiment 2

[0038] A coal water slurry additive, in parts by weight, comprises the following components:

[0039] 32 parts of polyoxyethylene ester, 2 parts of polyacrylamide, 28 parts of metasilicate, 68 parts of inorganic salt, 4 parts of organic bentonite, and 6 parts of polyalcoholamine.

[0040] The preparation method of this embodiment. Include the following steps:

[0041] S1, mix each material according to the above ratio, stir and mix;

[0042] S2, adding a pH regulator to adjust the pH value of the mixed material in step S1 to 12.0.

[0043] In this embodiment, the inorganic salt is sodium chloride, the pH regulator is sodium bicarbonate, and the metasilicate is sodium metasilicate.

Embodiment 3

[0045] A coal water slurry additive, in parts by weight, comprises the following components:

[0046] 20 parts of polyoxyethylene ester, 3 parts of polyacrylamide, 35 parts of metasilicate, 70 parts of inorganic salt, 5 parts of organic bentonite, and 3 parts of polyalcoholamine.

[0047] The preparation method of this embodiment. Include the following steps:

[0048] S1, mix each material according to the above ratio, stir and mix;

[0049] S2, adding a pH regulator to adjust the pH value of the mixed material in step S1 to 10.0.

[0050] In this embodiment, the inorganic salt is sodium chloride, the pH regulator is sodium bicarbonate, and the metasilicate is sodium metasilicate.

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Abstract

The invention discloses a coal water slurry additive and a preparation method and application thereof, and the coal water slurry additive comprises the following components in parts by weight: 15-32 parts of polyoxyethylene ester, 2-5 parts of polyacrylamide, 28-42 parts of metasilicate, 68-83 parts of inorganic salt, 4-7 parts of organic bentonite and 2-6 parts of polymeric alkylol amine. The additive disclosed by the invention can improve the hydrophilicity of the surfaces of coal particles and adjust the charge density of the surfaces of the particles, and charges establish a three-dimensional structure for preventing precipitation in coal slurry, so the coal water slurry has the advantages of improved concentration, lower viscosity and better flowability in normal use, and is not easyto generate precipitation in a static state.

Description

technical field [0001] The invention relates to the technical field of chemical additives, in particular to a coal-water slurry additive and its preparation method and application. Background technique [0002] The surface of pulverized coal particles is hydrophobic, and pulverized coal that is not completely wetted will aggregate with each other, which will increase the viscosity and deteriorate the fluidity. Therefore, the concentration of coal-water slurry prepared from coal powder without additives is not high. Therefore, additives are usually used to increase the concentration of coal water slurry during operation [0003] During the use of existing coal slurry additives, coal slurry has high viscosity, poor fluidity, and is prone to precipitation. Contents of the invention [0004] The object of the present invention is to provide a coal-water slurry additive to solve the problems of high viscosity, poor fluidity and easy precipitation of coal slurry caused by the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/198C10L1/236C10L1/28C10L1/12C10L1/14C10L1/32
CPCC10L1/106C10L1/1225C10L1/14C10L1/1983C10L1/2364C10L1/28C10L1/324
Inventor 卫强孙耀进
Owner 四川路加四通科技发展有限公司
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