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Device and process for separating coal tar components

A coal tar and process technology, applied in the field of coal chemical industry, can solve the problems of low separation and utilization efficiency, complexity, and large amount of phenol-containing wastewater, and achieve the effects of easy expansion of production, high energy consumption, and simple structure

Inactive Publication Date: 2016-03-02
NORTHWEST UNIV(CN)
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Problems solved by technology

Solvent extraction, distillation, and recrystallization methods have many problems such as high energy consumption in the process of coal tar processing, many and complicated operating procedures, low separation and utilization efficiency of product components, large amount of phenol-containing wastewater, and serious environmental pollution.

Method used

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  • Device and process for separating coal tar components
  • Device and process for separating coal tar components
  • Device and process for separating coal tar components

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Embodiment Construction

[0037] The present invention will be described in further detail below through embodiments in conjunction with the accompanying drawings.

[0038] see figure 1, a coal tar component separation device, including an extractor 1, a booster pump 4, a chromatographic column 5, a first distillation tower 7, a second distillation tower 12 and a solvent storage tank 9. The middle part of the side wall of the extractor 1 is connected to the pressure pump 4 through the first electromagnetic valve 3, and the pressure pump 4 is also connected to the solvent storage tank 9, and a fifth electromagnetic valve 10 is arranged between the pressure pump 4 and the solvent storage tank 9; The booster pump 4 is connected to the upper end of the chromatographic column 5, the lower end of the chromatographic column 5 is connected to the bottom of the first distillation tower 7 and the second distillation tower 12 respectively, the top of the first distillation tower 7 is connected to the top of the e...

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Abstract

Provided are a device and process for separating coal tar components. Coal tar and alkane of C5-C8 undergo mixed extraction in an extractor and still standing and a first solenoid valve is opened to discharge an asphalt component; alkane chromatographic column elution and separation of C5-C8 are performed: the mixture of the coal tar components where the asphalt component is removed and alkane of C5-C8 are sent into a chromatographic column to be separated; mixed liquid obtained through chromatographic column separation enters a first distillation tower to be distilled to obtain a neutral oil component and alkane of C5-C8, and the neutral oil component is discharged; polar solvent chromatographic column elution and separation are performed; a polar solvent is pressurized through a pressure pump and then enters the chromatographic column to undergo elution and separation and then enters a second distillation tower to be separated to obtain a crude phenol component and the polar solvent, and the separation of the coal tar components is finished. The process is a green separation process, and no waste water, waste residue or waste gas is generated. The operation conditions of the process are mild, simple and convenient, and the process and the device are low in cost and small in investment.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and relates to a coal tar component separation device and a separation process. Background technique [0002] Coal tar contains aliphatic hydrocarbons, aromatic hydrocarbons and phenolic compounds. According to the chemical composition, it can be divided into neutral compounds, acidic compounds, oxygen-containing compounds and sulfur-containing compounds (very low content). Neutral compounds, commonly known as neutral oils, mainly include aliphatic hydrocarbons and aromatic hydrocarbons. Aliphatic hydrocarbons are an important part of fuel oil such as gasoline and diesel, and are excellent raw materials for hydrogenation to produce high-cetane diesel; aromatic hydrocarbons include carbazole and quinoline, which cannot be obtained or economically obtained in petrochemical industry. High value-added fine chemicals. Acidic compounds mainly refer to phenolic compounds in coal tar. P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/18C10C1/04
CPCC10C1/18C10C1/04
Inventor 孙鸣马晓迅吕波徐龙
Owner NORTHWEST UNIV(CN)
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