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Starch modified comb-type coal water slurry dispersant and preparation method thereof

A starch modification, coal-water slurry technology, applied in fuel additives, petroleum industry, liquid carbon-containing fuels, etc., can solve the problem of high price and achieve the effects of low production cost, stable performance and wide source of raw materials

Inactive Publication Date: 2020-02-21
ANHUI XIN SOLID ENVIRONMENTAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these dispersants are based on petroleum products, which are not only expensive, but also prone to environmental pollution

Method used

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  • Starch modified comb-type coal water slurry dispersant and preparation method thereof
  • Starch modified comb-type coal water slurry dispersant and preparation method thereof
  • Starch modified comb-type coal water slurry dispersant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A starch-modified comb-type coal-water slurry dispersant, prepared from the following raw materials in parts by weight: 40 parts of starch, 18 parts of 32% sodium hydroxide solution, 10 parts of sodium sulfite (90%), 8 parts of acetic acid, and 27% hydrogen peroxide 3.7 parts, 530 parts of deionized water, 0.9 parts of 3-mercaptopropionic acid, 280 parts of monomer (polyethylene glycol monomethyl ether 200), 0.7 parts of VC, 28 parts of acrylic acid, and 6.9 parts of hydroxyethyl ester.

[0045] The method of above-mentioned starch modified comb type coal-water slurry dispersant comprises the following steps:

[0046] 1) Starch modification: add 60 parts of deionized water and formula amount of starch into a four-neck flask, stir and mix to form a uniform starch paste, add formula amount of 32% sodium hydroxide solution, and add formula amount of oxidant 27 at 40°C 2 parts of % hydrogen peroxide, oxidize at constant temperature for 3 hours, add acetic acid and sodium su...

Embodiment 2

[0055] A starch-modified comb-type coal-water slurry dispersant, prepared from the following raw materials in parts by weight: 80 parts of starch, 25 parts of 32% sodium hydroxide solution, 12 parts of sodium sulfite (87%), 13 parts of acetic acid, and 27% hydrogen peroxide 5.2 parts, 540 parts of deionized water, 1.1 parts of 3-mercaptopropionic acid, 230 parts of monomer (polyethylene glycol monomethyl ether 400), 0.6 parts of VC, 21 parts of acrylic acid, and 5.8 parts of hydroxyethyl ester.

[0056] The preparation method of above-mentioned starch modified comb type coal-water slurry dispersant comprises the following steps:

[0057] 1) Starch modification: Add 60 parts of deionized water and the formulated amount of starch into a four-neck flask, stir and mix to form a uniform starch paste, add the formulated amount of 32% sodium hydroxide solution, and add the formulated amount of oxidant 27 at 35°C 3.6 parts of % hydrogen peroxide, oxidize at constant temperature for 2....

Embodiment 3

[0066] A starch-modified comb-type coal-water slurry dispersant, prepared from the following raw materials in parts by weight: 60 parts of starch, 19 parts of 32% sodium hydroxide solution, 10 parts of sodium sulfite (87%), 11 parts of acetic acid, and 27% hydrogen peroxide 5.2 parts, 510 parts of deionized water, 1.2 parts of 3-mercaptopropionic acid, 260 parts of monomer (polyethylene glycol monomethyl ether 600), 0.65 parts of VC, 22 parts of acrylic acid, 6.1 parts of hydroxyethyl ester.

[0067] The preparation method of above-mentioned starch modified comb type coal-water slurry dispersant comprises the following steps:

[0068] 1) Starch modification: Add 100 parts of deionized water and starch in the formulated amount into a four-neck flask, stir and mix to form a uniform starch paste, add 32% sodium hydroxide solution in the formulated amount, and add the formulated amount of oxidant at 25°C 3.6 parts of 27% hydrogen peroxide, oxidized at constant temperature for 2.5 ...

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Abstract

The invention provides a starch modified comb-type coal water slurry dispersant and a preparation method thereof. The coal water slurry dispersant is prepared from the following raw materials in partsby weight: 20 to 80 parts of starch, 15-35 parts of a sodium hydroxide solution with a concentration of 32%, 5 to 25 parts of sodium sulfite, 5 to 15 parts of acetic acid, 2 to 7 parts of hydrogen peroxide with a concentration of 27%, 470 to 550 parts of deionized water, 0.5 to 1.5 parts of 3-mercaptopropionic acid, 180 to 300 parts of methoxypolyethylene glycol 200-800, 0.5 to 2 parts of VC, 20to 35 parts of acrylic acid and 5 to 10 parts of hydroxyethyl ester. The coal water slurry dispersant prepared by using the preparation method provided by the invention has low production cost and extensively-available raw materials, can independently act on a coal water slurry to achieve good dispersing effect, and can still be greatly improved in dispersing effect and product adaptability and stability compared with single use after being compounded with dispersing agents, sodium carbonate and the like according to a certain proportion.

Description

technical field [0001] The invention relates to the technical field of coal-water slurry dispersants, in particular to a starch-modified comb-type coal-water slurry dispersant and a preparation method thereof. Background technique [0002] The world today is facing an oil crisis, and research on new energy alternatives has begun, and coal water slurry is one of its alternatives. Coal water slurry appeared in the international oil crisis in the late 1970s. It is a high-tech product for coal utilization that plans to replace petroleum. Its main components are about 60-70% coal, 30%-40% water and A small amount of coal water slurry additive has good fluidity and stability and its appearance is similar to heavy oil. Coal-water slurry technology is to convert solid coal into liquid coal-based fuel through physical processes. It not only has good combustion characteristics, but also has some advantages of heavy oil, so it can replace heavy oil and be used in power generation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L1/14C10L1/24C10L10/18
CPCC10L1/143C10L1/2437C10L1/2462C10L1/2475C10L1/326C10L10/18
Inventor 董翠平马丽涛彭城尤健健杨道顺
Owner ANHUI XIN SOLID ENVIRONMENTAL CO LTD