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Coal water slurry dispersing stabilizer

A technology of dispersion stabilizer and coal-water slurry, which is used in the petroleum industry, liquid carbon-containing fuels, fuels, etc., can solve the problems of uneven dispersion, high viscosity, and easy particle aggregation of coal-water slurry, achieve excellent dispersion effect, improve Hydrophilic, interfacial tension reduction effect

Inactive Publication Date: 2015-05-27
张晨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, coal water slurry has the problems of uneven dispersion, high viscosity and easy aggregation of particles during use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Take 10g of sodium lignosulfonate, 3.3g of modified starch, 1.8g of hydroxymethyl cellulose, 2.5g of polymethacrylic acid, 2.0g of polyepoxysuccinic acid, and 1.4g of methylbenzotriazole; mix well to obtain Coal water slurry dispersion stabilizer A.

Embodiment 2

[0015] Take 10g of sodium lignosulfonate, 3.2g of modified starch, 1.7g of hydroxymethyl cellulose, 2.3g of polymethacrylic acid, 1.8g of polyepoxysuccinic acid, and 1.2g of methylbenzotriazole and mix them evenly to obtain water Coal slurry dispersion stabilizer B.

Embodiment 3

[0017] Take 10g of sodium lignosulfonate, 3.5g of modified starch, 2.0g of hydroxymethylcellulose, 2.7g of polymethacrylic acid, 2.3g of polyepoxysuccinic acid, and 1.5g of methylbenzotriazole; mix well to obtain Coal water slurry dispersion stabilizer C.

[0018] Effect test

[0019] Take 3kg of coal-water slurry with an apparent viscosity of 1330mPa.S, and divide it into 3 parts on average; then add 3g of coal-water slurry dispersion stabilizers A, B and C to the three groups of coal-water slurry, mix well and let stand for 24 hours ; Then measure the viscosity respectively: 678mPa.S, 713mPa.S, 697mPa.S.

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Abstract

The invention relates to a coal water slurry dispersing stabilizer, and belongs to the technical field of coal water slurry processing. The coal water slurry dispersing stabilizer is composed of the following raw materials by weight: 10 parts of sodium lignosulfonate, 3.2-3.5 parts of modified starch, 1.7-2.0 parts of hydroxymethyl cellulose, 2.3-2.7 parts of poly methyl acrylate, 1.8-2.3 parts of polyepoxysuccinic acid and 1.2-1.5 parts of methyl benzotriazole. According to the invention, the existing surface active agents are selected and combined according to a certain ratio, so that the surface active agents with different functions mutually coordinate to realize excellent dispersion effect. Specifically, the dispersing stabilizer can reduce the surface tension of water, increase the surface tension of coal, reduce the interfacial tension between the two liquid, so that the coal water slurry can be fully wet. The hydration film can separate the coal particles and reduce the resistance of the coal particles, so as to reduce the viscosity effect.

Description

technical field [0001] The invention relates to a dispersion stabilizer for coal water slurry, which belongs to the technical field of coal water slurry processing. Background technique [0002] Coal-water slurry is a low-pollution, high-efficiency, pipeline-transportable oil-substituting coal-based fluid fuel that is obtained through physical processing of about 65% coal, 34% water and 1% additive. It has changed the traditional way of burning coal, showing great advantages in environmental protection and energy saving. Especially in recent years, after adopting the technical route of recycling waste, the environmentally friendly coal-water slurry has been successfully developed, which can greatly improve the environmental protection benefits of coal-water slurry without increasing costs. Under the protection of my country's rich coal resources, coal water slurry has also become the most basic and economical clean energy to replace oil, gas and other energy sources. Howev...

Claims

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Application Information

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IPC IPC(8): C10L1/32C10L1/24
Inventor 张晨
Owner 张晨
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