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Coal water slurry and preparation method thereof

A technology of coal-water slurry and pulverized coal, which is applied in the petroleum industry, liquid carbon-containing fuels, fuels, etc., can solve the problems of increased production cost and large fuel consumption of incinerators.

Pending Publication Date: 2019-11-15
GUANGXI OCEANO CERAMICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional treatment method of phenol water is to achieve the effect of concentration through secondary reuse, but it still needs to be specially equipped with an incinerator for treatment. It takes about 450 kcal of calorific value per kilogram of phenol water to burn it, and the incinerator consumes a lot of fuel. increase production cost

Method used

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  • Coal water slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1, preparing coal water slurry containing phenol water and coal tar. The raw materials for preparing the coal-water slurry include: 44% phenol water, 51.7% coal powder, 3% coal tar, 0.5% anion debonding agent A, and 0.8% composite debonding agent B. According to the ratio of raw materials, using phenolic water as the ball milling medium, anionic debonding agent A and coal powder were added to the ball mill and ground for 7 hours; then coal tar and composite debonding agent B were added to the ball mill, and then ground for 5 minutes, that is Coal water slurry with phenol water and coal tar as raw materials can be obtained. The fineness of coal water slurry is 5.0 (characterized by the proportion that cannot pass through the 200 mesh screen), and the flow rate is 75s.

Embodiment 2

[0012] Example 2, preparing coal water slurry containing phenol water and coal tar. The raw materials for preparing the coal-water slurry include: 49% phenol water, 42.3% coal powder, 8% coal tar, 0.2% anionic debonding agent A, and 0.5% composite debonding agent B. According to the ratio of raw materials, using phenolic water as the ball milling medium, anionic debonding agent A and coal powder were added to the ball mill for grinding for 6 hours; then coal tar and composite debonding agent B were added to the ball mill, and then ground for 10 minutes, that is Coal water slurry with phenol water and coal tar as raw materials can be obtained. The fineness of coal water slurry is 4.1 (characterized by the ratio that cannot pass through the 200 mesh screen), and the flow rate is 48s.

Embodiment 3

[0013] Example 3, preparing coal water slurry containing phenol water and coal tar. The raw materials for preparing the coal-water slurry include: 47% phenol water, 47% coal powder, 5% coal tar, 0.5% anionic debonding agent A, and 0.5% composite debonding agent B. According to the ratio of raw materials, with phenol water as the ball milling medium, the anionic debonding agent A and coal powder were added to the ball mill and ground for 6 hours; then coal tar and composite debonding agent B were added to the ball mill, and then ground for 8 minutes, that is Coal water slurry with phenol water and coal tar as raw materials can be obtained. The fineness of coal water slurry is 4.5 (characterized by the ratio that cannot pass through the 200 mesh screen), and the flow rate is 50s.

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Abstract

The invention discloses a coal water slurry preparation method which is characterized by comprising the following steps: 1) by taking carbolisata aqua as a ball milling medium, adding an anion dispergator A and coal powder into a ball mill, and performing grinding for 5-7 hours; and 2) adding coal tar and a composite dispergator B into the ball mill, and performing continuous grinding till the slurry is uniformly mixed. As the carbolisata aqua and the coal tar are separately used, coal powder is subjected to carbolisata aqua ball milling firstly, and the carbolisata aqua has a small organic matter amount, the ball milling speed of coal water slurry is not greatly affected by carbolisata aqua ball milling; and after the slurry meets the grinding time, the coal tar is added into the ball mill, and the coal tar can be rapidly and uniformly dispersed into the coal water slurry through the composite dispergator B. By adopting the method that the carbolisata aqua and the coal tar are added at different steps, the consequence that the coal powder is bonded with ballstone by the coal tar when the carbolisata aqua and the coal tar are put into the ball mill together can be avoided; and meanwhile, the problem that heat energy can be consumed if the carbolisata aqua is independently treated can be also solved.

Description

technical field [0001] The invention relates to the field of fuel technology, in particular to a coal-water slurry and a preparation method of the coal-water slurry. Background technique [0002] In China, the current building ceramics industry mainly adopts coal-to-gas method to produce water gas as kiln fuel. During the coal-to-gas process, organic compounds such as aromatic hydrogens, phenols, and cyanides are produced, and these organic compounds are sent to the kiln along with water gas. During the transportation process, the water gas is gradually cooled, and the organic substances such as aromatic hydrogens, phenols, cyanides and water vapor associated with the water gas are condensed to form coal tar and phenol water. Coal tar is widely used, but phenol water is a waste that requires harmless treatment. The conventional treatment method of phenol water is to achieve the effect of concentration through secondary reuse, but it still needs to be specially equipped with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32
CPCC10L1/326C10L2290/24C10L2290/28
Inventor 赵光岩
Owner GUANGXI OCEANO CERAMICS CO LTD
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