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Coal water slurry prepared by utilizing waste activated carbon, organic wastewater and coal and preparation method thereof

A technology of organic waste liquid and activated carbon, which is applied in the direction of liquid carbon-containing fuel, petroleum industry, fuel, etc., to achieve the effects of easy storage, reduced pulping cost, good fluidity and stability

Pending Publication Date: 2019-01-04
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of disposal of existing hazardous waste waste activated carbon and organic waste liquid, fully utilizes the characteristics of high fixed carbon content of waste activated carbon to replace part of coal as raw materials for coal gasification, and provides a method of using waste activated carbon, organic waste liquid and coal powder Mix, then add appropriate amount of additives to prepare coal water slurry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of coal water slurry, by weight percentage, is made up of following components: 54% coal powder, 17% waste activated carbon, 23.9% water, 3% organic waste liquid, 2% pulping additive, 0.1% gray water dispersant.

[0024] The above pulverized coal is Shenfu coal with a moisture content of 15.8%. The gray water dispersant is a high temperature scale inhibitor dispersant. The pulping additive is lignosulfonate. Spent activated carbon is waste activated carbon produced during the production of ammonium sulfate, with a water content of about 2%. The organic waste liquid is a mixed aqueous solution of methanol, toluene and isopropanol produced in the pharmaceutical process, with a COD value of 75,000 mg / L.

[0025] The preparation method of above-mentioned coal water slurry is, and step is as follows:

[0026] 1) Send 3 parts by weight of organic waste liquid into the preparation kettle, and in the preparation kettle, heat up to 30~40 oC , adding liquid caustic s...

Embodiment 2

[0033] A kind of coal water slurry, by weight percentage, is made up of following components: 56% coal powder, 14% waste activated carbon, 26.5% water, 2.4% organic waste liquid, 1% pulping additive, 0.1% gray water dispersant.

[0034] The above pulverized coal is Shenfu coal with a moisture content of 15.8%. The gray water dispersant is a high temperature scale inhibitor dispersant. The pulping additive is a 1:1 mixed salt of naphthalene sulfonate and lignosulfonate. Spent activated carbon is waste activated carbon produced during the production of ammonium sulfate, with a water content of about 2%. The organic waste liquid is a mixed aqueous solution of methanol, toluene and isopropanol produced in the pharmaceutical process, with a COD value of 75,000 mg / L.

[0035] The preparation method of above-mentioned coal water slurry is, and step is as follows:

[0036] 1) Send 2.4 parts by weight of organic waste liquid into the preparation kettle, and in the preparation kettl...

Embodiment 3

[0043] A kind of coal water slurry, by weight percentage, is made up of following components: 56% coal powder, 14% waste activated carbon, 26.5% water, 2.4% organic waste liquid, 1% pulping additive, 0.1% gray water dispersant.

[0044] The above pulverized coal is Shenfu coal with a moisture content of 15.8%. The gray water dispersant is a high temperature scale inhibitor dispersant. The pulping additive is a 1:1 (weight ratio) mixed salt of sulfonated humate and lignosulfonate. Waste activated carbon is the waste activated carbon produced in the process of spray paint exhaust gas treatment, with a moisture content of about 5%. The organic waste liquid is a mixed aqueous solution of ethanol and acetone produced in the pharmaceutical process, with a COD value of 7500 mg / L.

[0045] The preparation method of above-mentioned coal water slurry is, and step is as follows:

[0046] 1) Send 2.4 parts by weight of organic waste liquid into the preparation kettle, and in the prepa...

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Abstract

The invention discloses coal water slurry prepared by utilizing waste activated carbon, organic wastewater and coal and a preparation method thereof. The coal water slurry comprises the following components in percentage by weight: 54-60% of coal, 11-17% of waste activated carbon, 23-30% of water, 1-3% of organic wastewater, 0.5-2% of a slurry making additive and 0.05-0.15% of an ash-water dispersing agent. The coal water slurry is prepared by utilizing the waste activated carbon and the organic wastewater, so that the treatment difficulties of the waste activated carbon and the organic wastewater can be effectively solved, and the waste resource utilization can be realized at the same time. The cola water slurry is prepared by utilizing the waste activated carbon, so that the high carboncontent of the waste activated carbon can be sufficiently utilized and the dosage of slurry making coal powder is decreased. The coal water slurry is prepared by utilizing the organic wastewater, so that moisture of the organic wastewater can be sufficiently utilized and the dosage of slurry making water is decreased.

Description

technical field [0001] The invention relates to a coal-water slurry prepared by using waste activated carbon, organic waste liquid and coal and a preparation method thereof. Background technique [0002] Activated carbon has a well-developed pore structure and a huge specific surface area, and has dual characteristics of physical adsorption and chemical adsorption. It is widely used in toxic and harmful gases, sewage treatment, etc. Activated carbon has the characteristics of adsorption saturation, and it loses its adsorption activity after being used in pollution control for a certain period of time; as a carrier of highly enriched pollutants, it forms hazardous solid waste. With the increasing demand for activated carbon in all walks of life, the disposal of waste activated carbon has gradually become a new problem in environmental pollution control. Organic waste liquid has the characteristics of complex composition and high COD value. It is difficult to meet the dischar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32
CPCC10L1/326
Inventor 潘志彦徐艳梅朱玲莎王亮陈霞
Owner ZHEJIANG UNIV OF TECH
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