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System and process for strengthening toluene hydrogenation reaction

A technology of hydrogenation reaction and toluene, which is applied in the system field of strengthening toluene hydrogenation reaction, can solve the problem of high pressure, achieve low reaction pressure, improve utilization rate, and high reflection efficiency

Inactive Publication Date: 2021-03-26
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the present invention provides a system and process for strengthening the hydrogenation reaction of toluene, in order to solve the problem of higher pressure in the hydrogenation reaction of toluene

Method used

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  • System and process for strengthening toluene hydrogenation reaction
  • System and process for strengthening toluene hydrogenation reaction

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Effect test

Embodiment 1

[0039] A micro-interface generator is installed at the reactor outlet of the feed oil pipeline and the hydrogen pipeline respectively, and its system structure is as follows figure 1 As shown, the operation period of the reactor is half a year, the reaction temperature is 500° C., the reaction pressure is 2 MPa, the yield of benzene is 97%-98.6%, and the purity of the produced benzene is more than 99.5%.

Embodiment 2

[0041] Two micro-interface generators are installed at the reactor outlets of the feed oil pipeline and the hydrogen pipeline respectively, and the system structure is as follows figure 2 As shown, the operation period of the reactor is half a year, the reaction temperature is 450° C., the reaction pressure is 1.4 MPa, the yield of benzene is 98%-99.5%, and the purity of the produced benzene is over 99.5%.

Embodiment 3

[0043]Three micro-interface generators are installed at the reactor outlets of the raw material oil pipeline and the hydrogen pipeline. The reactor operation period is half a year, the reaction temperature is 400°C, the reaction pressure is 1MPa, and the benzene yield is 97%-99.1%. , the purity of the prepared benzene is above 99.5%.

[0044] Compared with the traditional method of preparing benzene by catalytic dealkylation of alkylaromatics, the above-mentioned embodiment effectively reduces the reaction pressure and reaction temperature by installing a micro-interface generator, increases the reaction efficiency of hydrogen and raw oil, and reduces the amount of material and energy loss.

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Abstract

The invention relates to a system and process for strengthening toluene hydrogenation reaction, and belongs to the technical field of benzene preparation. According to the invention, a micro-interfacegenerator is arranged in a bubbling tower reactor to smash introduced gas, so that the speed of discharging the gas out of the reactor is reduced; the micro-interface generator crushes gas into micron-sized bubbles, and the micron-sized bubbles are dissolved in benzene liquid for reaction, so that the phase interface area is increased, the reaction pressure and the reaction temperature can be reduced, and the material consumption and the energy consumption are reduced. Benzene is a basic raw material of petrochemical engineering, and the yield of benzene and the technical level of productionare one of marks of the national petrochemical engineering development level, so that improvement on the device for manufacturing benzene reduces the production cost and has important significance.

Description

technical field [0001] The invention relates to the preparation of benzaldehyde, in particular to a system and process for strengthening the hydrogenation reaction of toluene. Background technique [0002] Benzene is a highly flammable, scented, colorless liquid at room temperature. It is an organic compound and the simplest aromatic hydrocarbon. Benzene is highly toxic and a carcinogen. It is hardly soluble in water, and its density is lower than that of water. It is easily soluble in organic solvents and can be used as an organic solvent itself. Benzene is also the basic raw material of petrochemical industry. The output of benzene and the technical level of production are one of the symbols of the development level of a country's petrochemical industry. [0003] Benzene can be used as a solvent for fats, resins, and iodine; for determining the refractive index of minerals; as a solvent for high-pressure liquid chromatography, as a raw material for synthetic dyes, medici...

Claims

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Application Information

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IPC IPC(8): B01J8/00B01J8/02B01J19/00C07C4/18
CPCB01J8/0085B01J8/02B01J8/0285B01J19/0093C07C4/18C07C2523/26C07C15/04
Inventor 张志炳高伟周政张锋李磊孟为民王宝荣杨高东罗华勋杨国强田洪舟曹宇高亚男黄传峰
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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