Coal tar dehydrant and applications thereof

A technology of coal tar and dehydrating agent, which is applied in the direction of dehydration/emulsification by chemical methods, can solve the problems of long dehydration time, high dehydration temperature, and high energy consumption, and achieve fast dehydration speed, less consumption, and low energy consumption. Effect

Active Publication Date: 2013-10-23
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of high dehydration temperature, long dehydration time and high energy consumption in the prior art, and provide a coal tar dehydrating agent with fast dehydration speed, high efficiency and low energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Taking the preparation of 1000g coal tar dehydrating agent as an example, component A is 0.08 parts by mass, component B is 3 parts by mass, component A is composed of 30wt.% polyether, 50wt.% methanol, and 20wt.% tap water. The specific raw material composition as follows:

[0014] 7.8g of polyether with an average molecular weight of 4000

[0015] Methanol 13.0g

[0016] Tap water 5.2g

[0017] Mass fraction is 974g of sodium acetate aqueous solution of 40%

[0018] The above-mentioned polyether with an average molecular weight of 4000 is a compound of phenolic aldehyde resin polyoxypropylene polyoxyethylene ether and polyol polyether, provided by Huaqin Chemical Co., Ltd.

[0019] The preparation method of the above-mentioned coal tar dehydrating agent is as follows: 7.8g of polyether having an average molecular weight of 4000 is added to a mixed solution of 13.0g of methanol and 5.2g of tap water, stirred evenly, and then 974g of 40% sodium acetate aqueous soluti...

Embodiment 2

[0021] Taking the preparation of 1000g coal tar dehydrating agent as an example, component A is 0.1 parts by mass, component B is 4 parts by mass, component A is composed of 30wt.% polyether, 50wt.% methanol, and 20wt.% tap water. The specific raw material composition as follows:

[0022] 7.3g of polyether with an average molecular weight of 8000

[0023] Methanol 12.2g

[0024] Tap water 4.9g

[0025] The mass fraction is 975.6g of sodium acetate aqueous solution of 40%

[0026] The above-mentioned polyether with an average molecular weight of 8000 is a compound of phenolic aldehyde resin polyoxypropylene polyoxyethylene ether and polyol polyether, provided by Huaqin Chemical Co., Ltd.

[0027] The preparation method of above-mentioned coal tar dehydrating agent is identical with embodiment 1.

Embodiment 3

[0029] Taking the preparation of 1000g coal tar dehydrating agent as an example, component A is 0.1 parts by mass, component B is 5 parts by mass, component A is composed of 30wt.% polyether, 50wt.% methanol, and 20wt.% tap water. The specific raw material composition as follows:

[0030] Polyether with an average molecular weight of 6000 5.9g

[0031] Methanol 9.8g

[0032] Tap water 3.9g

[0033] The mass fraction is 980.4g of 40% sodium acetate aqueous solution

[0034] The above-mentioned polyether with an average molecular weight of 6000 is a compound of phenolic aldehyde resin polyoxypropylene polyoxyethylene ether and polyol polyether, provided by Huaqin Chemical Co., Ltd.

[0035] The preparation method of above-mentioned coal tar dehydrating agent is identical with embodiment 1.

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Abstract

Provided are a coal tar dehydrant and applications thereof. The coal tar dehydrant is composed of, by weight, 0.08-0.1 part of first component and 1.5-5 parts of second component. The first component is composed of 30 wt.% of polyether, 50 wt.% of methanol and 20 wt.% of tap water. The second component is sodium acetate aqueous solution with a mass fraction of 40%. When the coal tar dehydrant is used to dehydrate coal tar, 1.6-5 kg of the dehydrant is added into 1 ton of coal tar. The dosage of the dehydrant is small, the water content of the coal tar can be reduced to below 3%, which satisfies coal tar finished product requirements. Compared to coal tar dehydrants in the prior art, the coal tar dehydrant is advantaged by rapid dehydration speed, high efficiency and low energy consumption.

Description

technical field [0001] The invention relates to a high-efficiency coal tar dehydrating agent and its application technology, in particular to the formula composition and use conditions of the coal tar dehydrating agent, which is mainly used for coal tar dehydration. Background technique [0002] Coal tar is an oil product obtained during high-temperature dry distillation and gasification of coal. In the process of coal coking, the high-temperature raw gas is recovered by spraying circulating ammonia water and condensing and cooling in the primary cooler. In addition, the high-pressure ammonia water injection method is used for smokeless coal charging, so the tar contains a large amount of ammonia water. Moisture in tar has many adverse effects on subsequent distillation operations. Mainly include: (1) In the intermittent tar distillation kettle, if the tar contains a lot of water, the dehydration time will be prolonged to reduce the production capacity of the equipment and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04
Inventor 孙玉鹏王丽莉朱瑞龙
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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