Method for preparing coal water slurry from butanediol (BDO) wastewater

A coal-water slurry and wastewater technology, which is applied in the petroleum industry, liquid carbon-containing fuel, fuel, etc., can solve the problems of subsequent treatment system poisoning and complicated treatment procedures, and achieve good slurry-forming and combustible effects

Inactive Publication Date: 2019-05-28
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, various physical, chemical, biological and other methods for treating BDO wastewater and waste liquid have complicated treatment procedures, and components such as formaldehyde and heavy metal ions in waste water are likely to cause problems such as poisoning in the subsequent treatment system. The processing method has important practical significance

Method used

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  • Method for preparing coal water slurry from butanediol (BDO) wastewater
  • Method for preparing coal water slurry from butanediol (BDO) wastewater
  • Method for preparing coal water slurry from butanediol (BDO) wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 20 parts of deionized water and 0.1 part of dispersant and pour them into the container, stir well and mix well, then add 3 parts of BDO waste water and stir to dissolve, add coal powder quickly while stirring at 200r / min, and then add it at 1200r / min After stirring for 5 minutes at a certain speed, the coal-water slurry was obtained.

[0019] Among them: the slurry concentration of coal powder is 61%, and the dispersant is a naphthalene-based coal water slurry dispersant.

Embodiment 2

[0021] Weigh 35 parts of deionized water and 0.2 parts of dispersant and pour them into the container, stir and mix well, then add 5 parts of BDO waste water and stir to dissolve, and quickly add coal powder while stirring at 350r / min, and then at 1500r / min After stirring for 7 minutes at a certain speed, the coal-water slurry was prepared.

[0022] Among them: the slurry concentration of coal powder is 61%, and the dispersant is a naphthalene-based coal water slurry dispersant.

Embodiment 3

[0024] Weigh 50 parts of tap water and 0.3 parts of dispersant and pour them into the container, stir well and mix evenly, add 7 parts of BDO wastewater and stir to dissolve, and quickly add coal powder while stirring at 500r / min, and then at a speed of 1800r / min After stirring for 10 minutes, the coal water slurry was obtained.

[0025] Among them: the slurry concentration of coal powder is 61%, and the dispersant is a naphthalene-based coal water slurry dispersant.

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Abstract

The invention discloses a method for preparing coal water slurry from butanediol (BDO) wastewater. The coal water slurry is prepared from the raw materials in parts by weight: 60-70 parts of pulverized coal, 0.1-0.3 part of a dispersant, 20-50 parts of tap water or deionized water and 3-7 parts of the BDO wastewater. The preparation method includes the steps that the quantitative tap water or deionized water and the quantitative dispersant are weighed separately and then poured into a container, after full stirring and uniform mixing, the BDO wastewater is added and stirred to be dissolved, the pulverized coal is quickly added while stirring, and the coal water slurry is obtained after a period of time of stirring. The prepared coal water slurry has good slurry ability and combustion performance, and the BDO wastewater can replace the effect of the dispersant in the coal water slurry.

Description

technical field [0001] The invention relates to the technical field of coal-water slurry preparation, in particular to a method for preparing coal-water slurry by using BDO wastewater. Background technique [0002] BDO wastewater waste liquid is the impurity separated by evaporation during the production of BDO (1,4-butanediol, chemical formula is C4H10O2), the main components are 1,4-butanediol, nonanediol, decenol and other alcohols Classes, olefinic aldehydes, and sodium-containing salts, etc., have the characteristics of high boiling point, high viscosity, and high salt content; this makes the treatment of BDO wastewater and waste liquid an urgent problem to be solved in the industry. At present, various physical, chemical, biological and other methods for treating BDO wastewater and waste liquid have complicated treatment procedures, and components such as formaldehyde and heavy metal ions in waste water are likely to cause problems such as poisoning in the subsequent t...

Claims

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Application Information

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IPC IPC(8): C10L1/32
Inventor 李寒旭胡侠张元春毛立睿许航郑博文高圣涛
Owner ANHUI UNIV OF SCI & TECH
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