Water coal slurry prepared from hazardous waste coal tar, and preparation method and use method thereof

A technology of coal water slurry and coal tar, which is applied in the petroleum industry, liquid carbon-containing fuels, fuels, etc., can solve the problems of low calorific value utilization rate and environmental pollution, so as to increase the calorific value, broaden the prospect of popularization and application, and prevent clustering Effect

Active Publication Date: 2019-03-29
广东汇昇环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current combustion treatment will also cause problems such as low calorific value utilization and environmental pollution.

Method used

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  • Water coal slurry prepared from hazardous waste coal tar, and preparation method and use method thereof
  • Water coal slurry prepared from hazardous waste coal tar, and preparation method and use method thereof

Examples

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preparation example Construction

[0076] According to a second aspect of the present invention, a kind of preparation method of coal-water slurry is provided, comprising the following steps:

[0077] Coal powder, coal tar residue, debonding agent, additives and water are mixed and ground to remove coarse grains and impurities, and stored or transported to obtain coal water slurry.

[0078] The process of the invention is simple, easy to implement, and environmentally friendly. In the existing process, coal tar residue is added in the pre-order to reduce the amount of coal powder used to save energy. After grinding, the solid particle size in the slurry is small, and the slurry Uniform distribution, good stability and fluidity.

[0079] In one embodiment, the grinding is ball milling, and the ball milling process parameters include: the rotation speed of the cylinder is 8-12r / min, and the ball milling time is 3.5-4.5h.

[0080] The rotation speed of the cylinder is, for example, 8r / min, 9r / min, 10r / min, 11r / mi...

Embodiment 1

[0096] A coal water slurry comprises the following raw materials in parts by weight: 13 parts of coal powder, 12 parts of coal tar residue, 0.2 part of debonding agent, 0.2 part of dispersant, 0.2 part of stabilizer and 18 parts of water.

[0097] Among them, the oil content in coal tar residue is 44.6%;

[0098] The degumming agent is composed of the following components in weight percentage: 29% sodium hydroxide, 20% sodium carbonate, 5% sodium phosphate, 16% liquid sodium silicate, 20% sodium tripolyphosphate and 10% polyacrylamide;

[0099] The dispersant is sodium lignosulfonate, and the stabilizer is carboxymethyl cellulose.

[0100] The preparation method of coal water slurry comprises the following steps:

[0101] The coal powder, coal tar residue, debonding agent, additives and water are weighed or measured in proportion and sent to the ball mill for ball milling, and ball milled at a cylinder speed of 8r / min for 3.5h to make coal water slurry, which is vibrated Sie...

Embodiment 2

[0103] A coal water slurry comprises the following raw materials in parts by weight: 20 parts of coal powder, 5 parts of coal tar residue, 0.8 part of debonding agent, 0.1 part of dispersant, 0.1 part of stabilizer and 20 parts of water.

[0104] Among them, the oil content in coal tar residue is 44.6%;

[0105] The degumming agent is composed of the following components in weight percentage: 30% sodium hydroxide, 13% sodium carbonate, 15% sodium phosphate, 12% liquid sodium silicate, 20% sodium tripolyphosphate and 10% polyacrylamide;

[0106] The dispersant is sodium humate, and the stabilizer is sodium carboxymethyl cellulose.

[0107] The preparation method of coal water slurry comprises the following steps:

[0108] The coal powder, coal tar residue, debonding agent, additives and water are weighed or measured in proportion and sent to the ball mill for ball milling, and ball milled at a cylinder speed of 12r / min for 4 hours to make coal water slurry, which is passed thr...

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Abstract

The invention discloses water coal slurry prepared from hazardous waste coal tar, and a preparation method and a use method thereof, and relates to the technical field of coal tar reutilization. The water coal slurry is prepared from the following ingredients in parts by weight: 13 to 20 parts of coal powder, 5 to 12 parts of coal tar, 0.2 to 0.8 parts of dispergators, 0.2 to 0.4 part of additivesand 15 to 20 parts of water. The water coal slurry is prepared from the coal tar and coal powder, so that the coal tar can be reasonably treated and used; the self consumption of the coal powder perse is reduced. Through the matched use of a certain amount of coal tar and the coal powder and through the addition of dispergators and additives, the water coal slurry with high slurry concentrationand low viscosity can be prepared; meanwhile, a great amount of solid state carbon and organic ingredients in coal tar can be utilized; the calorific value of the water coal slurry can be well improved, so that the coal tar is changed from waste materials into valuable materials; the popularization and application prospects are wide.

Description

technical field [0001] The invention relates to the technical field of coal tar residue reuse, in particular to a coal water slurry prepared from hazardous waste coal tar residue, a preparation method and a use method thereof. Background technique [0002] Coal gasification uses air, oxygen-enriched air, water vapor, and oxygen as gasification agents, and the coal-based fuel undergoes incomplete combustion reaction (gasification reaction) with the gasification agent under a certain pressure and temperature to generate H 2 and CO-based crude gas. In the process of coal gasification or coking, a large amount of coal tar residue will be produced, that is, coal gasification produces dusty gas water, which enters the tar separator after expansion and flash evaporation, and is divided into tar and medium oil, phenol water, tar and dust in the tar separator. Three layers, the tar, medium oil and phenol water located in the upper two layers are respectively sent to special treatmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L1/12C10L1/18C10L1/189C10L1/238C10L1/24
CPCC10L1/1233C10L1/1283C10L1/1291C10L1/1817C10L1/1895C10L1/2381C10L1/2437C10L1/2468C10L1/2475C10L1/324C10L1/326C10L2230/22
Inventor 陈肖
Owner 广东汇昇环保科技有限公司
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