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Coal water slurry dispersing agent

A dispersant and coal-water slurry technology, applied in the field of surfactants, can solve problems such as viscosity reduction and poor stability, and achieve the effects of improved stability, enhanced hydrophilicity, and enhanced adsorption capacity.

Active Publication Date: 2017-12-19
内蒙古易高煤化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: Aiming at the problem of poor viscosity reduction and poor stability of traditional coal water slurry dispersant, a coal water slurry dispersant is provided

Method used

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  • Coal water slurry dispersing agent

Examples

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Effect test

example 1

[0021] Mix gum arabic and phospholipids in a fermenter at a mass ratio of 1:3, add water 15 times the mass of gum arabic, and biogas slurry with 0.4 times the mass of gum arabic to the fermenter at a constant temperature of 32°C After 2 days of fermentation, the material in the fermentation tank was transferred to a rotary evaporator, and concentrated by rotary evaporation for 70 minutes at a temperature of 80°C, a rotational speed of 200r / min, and a pressure of 800Pa to obtain an activated mixture; Mix in a beaker with a mass ratio of 8:1, and move the beaker into a magnetic stirrer with a digital display speed measurement and a constant temperature. Under the conditions of a temperature of 60°C and a rotation speed of 180r / min, stir and react at a constant temperature for 90 minutes to obtain a sulfonated mixture; The activated sludge of the secondary settling tank and the organic waste are mixed in the fermentation tank according to the mass ratio of 2:5. Under the condition...

example 2

[0023] Mix gum arabic and phospholipids in a fermenter at a mass ratio of 1:3, add water with 15 times the mass of gum arabic, and biogas slurry with 0.4 times the mass of gum arabic to the fermenter at a constant temperature of 32°C After 2 days of fermentation, the material in the fermentation tank was transferred to a rotary evaporator, and concentrated by rotary evaporation for 70 minutes at a temperature of 80°C, a rotational speed of 200r / min, and a pressure of 800Pa to obtain an activated mixture; Mix in a beaker with a mass ratio of 8:1, and move the beaker into a magnetic stirrer with a digital display speed measurement and a constant temperature. Under the conditions of a temperature of 60°C and a rotation speed of 180r / min, stir and react at a constant temperature for 90 minutes to obtain a sulfonated mixture; Mix sugar and water in the flask at a mass ratio of 1:50, and after swelling for 50 minutes, move the flask into a magnetic stirrer with a digital display, spe...

example 3

[0025]Mix the activated sludge and organic waste from the secondary settling tank of the refinery in the fermentation tank at a mass ratio of 2:5, and keep it sealed at a constant temperature for 3 days for fermentation at a temperature of 35°C, then take the supernatant to obtain a fermentation broth; Mix chitosan and water in a flask at a mass ratio of 1:50, and after swelling for 50 minutes, move the flask into a magnetic stirrer with a digital display, speed measurement, and constant temperature, and stir and dissolve at a constant temperature at a temperature of 42°C and a speed of 230r / min. After 2 hours, the chitosan solution was obtained, and the chitosan solution and the fermentation broth were mixed in the fermentation kettle at a mass ratio of 1:3, and air was introduced into the fermentation kettle at a rate of 20mL / min, and the temperature was 40°C. , fermented at a constant temperature for 2 days to obtain a fermented chitosan mixture, added the fermented chitosan...

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Abstract

The invention discloses a coal water slurry dispersing agent, and belongs to the technical field of surfactant. A preparation method of the coal-water slurry dispersing agent comprises the following steps: mixing arabic gum with phospholipid to obtain a mixture; adding biogas fluid into the mixture; carrying out fermentation and concentration to obtain an activated mixture; carrying out mixed reaction on the activated mixture and a sulphonating agent to obtain an activated sulphonic acid mixture; mixing sludge in a secondary settling tank of an oil refinery with organic wastes, carrying out standing and fermentation under an anoxic condition, and fetching supernatant liquid to obtain fermentation liquid; carrying out mixed swelling on chitosan and water, performing heating and decomposition to obtain a chitosan solution; mixing the chitosan solution with the fermentation liquid, and performing fermentation under an aerobic condition to obtain a fermented chitosan solution; stirring the fermented chitosan solution and the activated sulphonic acid mixture and mixing the fermented chitosan solution with the activated sulphonic acid mixture to obtain the coal water slurry dispersing agent. According to the coal water slurry dispersing agent prepared by the invention, the stability of the dispersing agent can be effectively improved, and the coal water slurry keeps appropriate viscosity.

Description

technical field [0001] The invention discloses a coal water slurry dispersant and belongs to the technical field of surfactants. Background technique [0002] CWS (coal water slurry), also known as CWM (coal water mixture), is a solid-liquid dispersion system composed of 60% to 70% coal, about 30% water and about 1% additives. The coal-water mixture is a thermodynamically unstable system, and it is easy to form an agglomeration structure. The limited water is wrapped in the agglomeration structure, which increases the viscosity of the system and deteriorates the fluidity. The dispersant can change the surface properties of coal particles through the adsorption on the surface of coal particles, so that the bound water can be freed, thereby improving the stability and rheological properties of the suspension system. Therefore, the dispersant is coal water slurry The key to preparation technology. [0003] The coal water slurry dispersant refers to the surfactant added in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/10C10L1/32
CPCC10L1/10C10L1/326
Inventor 费国方徐颜峰张琳
Owner 内蒙古易高煤化科技有限公司