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Coal tar coupled rotational flow purification method and apparatus

A coal tar and micro-swirling technology, which is applied in tar processing, tar removal processing by water, tar processing by selective solvent extraction, etc., can solve the problems of cumbersome process, expensive equipment and high energy consumption

Active Publication Date: 2009-07-08
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the existing technology is cumbersome, expensive equipment, short operating cycle, and high energy consumption. Therefore, the extensive production of the coal chemical industry urgently needs high-efficiency, low-energy and compact advanced technology to replace traditional equipment and solve the bottleneck problem for the development of coal chemical industry

Method used

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  • Coal tar coupled rotational flow purification method and apparatus
  • Coal tar coupled rotational flow purification method and apparatus
  • Coal tar coupled rotational flow purification method and apparatus

Examples

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Effect test

Embodiment 1

[0061] Example 1: Shaanxi Shenmu Fuyou Energy Technology Co., Ltd. 12×10 4 Ton / year comprehensive utilization of medium and low temperature coal tar Medium and low temperature coal tar refining unit in the project

[0062] Properties of coal tar (the design raw material is based on 3#):

[0063] The coal tar properties in this plant are shown in Table 1 below.

[0064] Table 1

[0065]

Embodiment approach

[0067] First, fresh water is injected into the coal tar feed, and the static mixer is fully mixed and extracted, so that the salt in the feed can be fully integrated into the water; the material is sent to the two-stage liquid-liquid cyclone separator through a pump for full separation, so that The salty sewage is fully removed, while the oil is heated to 60-80°C through the oil gas / coal tar heat exchange at the top of the fractionating tower, and dehydrated in the static tank. The dehydration efficiency can reduce the water content to 2-3%; rough dehydration The final coal tar is then heated to about 130°C through diesel / coal tar heat exchange, and the viscosity of the coal tar is appropriately reduced, and then it is passed into a solid-liquid cyclone separator to remove solid particles; the purified coal tar is then passed into a micro cyclone Fine separation is carried out in the separator to further remove the remaining trace moisture in the coal tar, so that the moisture ...

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Abstract

The invention relates to a method and a device for purifying coal tar through coupling rotational flow, wherein the method for purifying the coal tar through coupling rotational flow comprises the following steps: (a) mixing coal tar feed with a trapping agent sufficiently so as to extract out saline matters dispersed in the coal tar; (b) performing liquid-liquid rotational flow separation on thecoal tar in which the dispersed saline matters are extracted out for separating out the saline matters so as to obtain desalinated coal tar; (c) keeping stand and depositing the desalinated coal tar so as to remove the moisture therein and obtain dehydrated coal tar; (d) performing solid-liquid rotational flow separation on the dehydrated coal tar so as to remove solid particles therein and obtain the coal tar without the solid particles; and (e) performing micro rotational flow separation on the coal tar without the solid particles so as to remove the micro moisture therein. The invention also provides a device for purifying the coal tar through the coupling rotational flow.

Description

technical field [0001] The invention relates to a coal tar pretreatment feed purification method, and provides a high-efficiency separation method for removing water, salt and solid particles in coal tar by coupled cyclone flow. More specifically, it relates to a coal tar coupled cyclone purification method and device. Background technique [0002] As the world's petroleum resources continue to decrease, coal chemical industry has broad prospects. The coal energy and chemical industry will play an important role in the sustainable utilization of global energy, and it will be the key energy development direction in the next 20 years, because it has great significance for reducing the serious environmental pollution caused by coal combustion, reducing the transportation cost of petroleum resources, and stabilizing the world economy . It can be said that the coal chemical industry is facing new market demands and development opportunities. [0003] Coal tar is a liquid produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/00C10C1/02C10C1/18
Inventor 汪华林刘毅杨强韩婕
Owner EAST CHINA UNIV OF SCI & TECH
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