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Device and process for continuous separation of coal tar components

A separation device and coal tar technology, applied in the field of coal chemical industry, can solve the problems of difficult investment cost, separation of product components and low utilization efficiency, and complexity, and achieve the effects of small footprint, easy expansion of production, and simple structure

Active Publication Date: 2017-03-08
NORTHWEST UNIV(CN)
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  • Application Information

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Problems solved by technology

[0009] In summary, there are many problems in the current traditional coal tar processing, such as high energy consumption, many and complicated operating procedures, low separation and utilization efficiency of product components, large amount of phenolic wastewater, and serious environmental pollution. The new technology of tar separation either has important defects, or there are large-scale equipment development problems in industrial applications, it is difficult to produce in large-scale chemical industry and the investment cost is high, so it can only stay in the laboratory stage

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  • Device and process for continuous separation of coal tar components
  • Device and process for continuous separation of coal tar components
  • Device and process for continuous separation of coal tar components

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Embodiment Construction

[0059] The present invention will be described in further detail below through embodiments in conjunction with the accompanying drawings.

[0060] All raw materials, intermediate products and storage tanks described in the present invention are equipped with liquid level control; the coal tar extraction reactor is equipped with a heating jacket and stirring device; the solvent A feeding tank is equipped with a heating jacket; The bottom of the above-mentioned adsorption tower is connected with three pipelines respectively.

[0061] see figure 1 , figure 2 and image 3 A coal tar component continuous separation device comprising: coal tar feed storage tank 1, solvent A storage tank 2, solvent B preheating storage tank 3, coal tar extraction reaction kettle 4, asphalt component separation storage tank 5, solvent A feed pump 6, solvent A extract feed pump 7, solvent B feed pump 8, asphalt component storage tank 9, first adsorption tower 10, second adsorption tower 11, solvent...

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Abstract

The invention discloses a device and a process for continuous separation of coal tar components. A solvent A and coal tar are subjected to mixing, extracting and stirring in an extraction reactor, and a mixture of the coal tar and the solvent A is separated in a separation tank to obtain an asphalt component; by arrangement of two adsorption towers, continuous performing of adsorption and elution is realized, a solvent A extract without the asphalt component is allowed to pass through the adsorption towers, and mixed liquid obtained after adsorption separation enters a neutral oil component separation tower to realize rectification to obtain a neutral oil component and the recovered solvent A; a solvent B is pressurized through a solvent B feeding pump and eluted through the adsorption tower which adsorbs the solvent A extract, eluant enters a crude phenol component separation tower to obtain a crude phenol component and the recovered solvent B through rectification separation. The process which is a green separation process is free of waste water, waste residues and waste gases and has advantages of mild operation conditions, simplicity and convenience in operation, low process and equipment cost, low input and the like.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry and relates to a continuous separation process and device for coal tar components. Background technique [0002] Coal tar is a very valuable organic chemical raw material. Some products cannot or cannot be economically obtained from petrochemical raw materials. For example, anthracene, acenaphthene and pyrene produced in the coking industry can meet more than 90% of the world's total demand. The azoles and quinolines are almost 100% from coking products. Therefore, coal tar products occupy an extremely important position in the world's chemical raw materials. According to the chemical composition, coal tar can be divided into neutral compounds, acidic compounds, oxygen-containing compounds (very low content) and sulfur-containing compounds (very low content). Neutral compounds, commonly known as neutral oils, mainly include aliphatic hydrocarbons and aromatic hydrocarbons. Alipha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/68C07C37/72C07C37/74C07C37/82C07C39/04C07C39/06C07C39/07C07C39/19C07C39/14C07C39/17C10C1/18C10C3/00
CPCC07C37/007C10C1/18C10C3/00C07C39/04C07C39/06C07C39/07C07C39/19C07C39/14C07C39/17
Inventor 孙鸣何超唐星冯新娟马晓迅徐龙褚雅志
Owner NORTHWEST UNIV(CN)
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