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Device and process for preparing methyl cyclopentane from cyclohexene

A technology of methylcyclopentane and methylcyclopentene, applied in the direction of hydrogenation hydrocarbon production, isomerization hydrocarbon production, catalysts, etc., can solve the problems of complex reaction products, long process flow, expensive catalysts, etc., and achieve the reaction route Simple, cost-effective, cheap and easy-to-get catalyst

Pending Publication Date: 2021-08-13
CHONGQING HUAFON CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the industrial production of methylcyclopentane is mainly C 6 Obtained by further catalytic reaction and rectification, the process flow is long, the catalyst is expensive, and the reaction product is complex

Method used

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  • Device and process for preparing methyl cyclopentane from cyclohexene

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Effect test

Embodiment 1

[0033] see figure 1The device for preparing methylcyclopentane from cyclohexene comprises a cyclohexene reactor 1, a rectifying tower 2, and a hydrogenation reactor 3. According to actual needs, the number of cyclohexene reactors is multiple, It is usually arranged in parallel, and the number of rectification towers can be set in multiples, which can be connected in parallel and / or in series. The number of hydrogenation reactors can also be set in multiples, usually in parallel. The agitator 4 is set in the cyclohexene reactor 1, and the feed inlet of the cyclohexene reactor 1 is used to link to each other with the cyclohexene source. In the present embodiment, the feed inlet of the cyclohexene reactor is arranged at the reaction The middle and lower part of the side wall of the device. The discharge port of the cyclohexene reactor 1 is connected to the rectification tower 2 through a discharge pipe 5, and the discharge pipe 5 is provided with a first valve a. In the present ...

Embodiment 2

[0035] Adopt the device of embodiment 1 to prepare methylcyclopentane, comprise the following steps:

[0036] 1) Get raw material cyclohexene (cyclohexene purity 99%wt), molecular sieve catalyst (control volume concentration 0.25), add in the cyclohexene reactor, the inner void volume of the cyclohexene reactor is 200m 3 , control the reaction temperature at 110-112°C, the pressure at 0.4-0.42MPa, and the cyclohexene feed flow at 100-105m 3 / h, molecular rearrangement occurs in cyclohexene to obtain a mixed material containing molecular sieve catalyst, cyclohexene, methylcyclopentene;

[0037] 2) The mixed material obtained in step 1) is discharged to the rectification tower, the top temperature of the rectification tower is controlled to be 35-37°C, the temperature of the tower bottom is 60-63°C, and the opening degree of the second valve and the third valve is controlled, After the separated methylcyclopentene is condensed into a liquid state by the condenser, it enters the...

Embodiment 3

[0041] Adopt the device of embodiment 1 to prepare methylcyclopentane, comprise the following steps:

[0042] 1) Get raw material cyclohexene (cyclohexene purity 99%wt), molecular sieve catalyst (control volume concentration 0.35), add in the cyclohexene reactor, the inner void volume of the cyclohexene reactor is 200m 3 , control the reaction temperature at 130-132°C, the pressure at 0.58-0.6MPa, and the cyclohexene feed flow at 180-183m 3 / h, molecular rearrangement occurs in cyclohexene to obtain a mixed material containing molecular sieve catalyst, cyclohexene, methylcyclopentene;

[0043] 2) The mixed material obtained in step 1) is discharged to the rectification tower, and the temperature at the top of the rectification tower is controlled to be 53-55° C., the temperature of the tower bottom is 79-81° C., and the opening degree of the second valve and the third valve is controlled. After the separated methylcyclopentene is condensed into a liquid state by the condenser...

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Abstract

A device for preparing methyl cyclopentane from cyclohexene comprises at least one cyclohexene reactor, a rectifying tower and a hydrogenation reactor. A stirrer is arranged in the cyclohexene reactor; a feed port of the cyclohexene reactor is used for being connected with a cyclohexene source; a discharge port of the cyclohexene reactor is connected with the rectifying tower through a discharge pipe; and a first valve is arranged on the discharge pipe. A tower top discharge port of the rectifying tower is connected with a reflux inlet of the rectifying tower through a condenser and a reflux pipe; a reflux pump is arranged on the reflux pipe; a second valve is arranged on the reflux pipe and located on the downstream of the reflux pump; and a liquid phase feed port of the hydrogenation reactor is connected with the reflux pipe through a feed pipe and located between the reflux pump and the second valve. A third valve is arranged on the feed pipe. A gas-phase feed port of the hydrogenation reactor is positioned at the top of the hydrogenation reactor; and a discharge port of the hydrogenation reactor is positioned at the bottom of the hydrogenation reactor. The structure is simple, the operation is convenient, cyclohexene wide in source is used for preparing methyl cyclopentane, and the actual requirements of enterprises are effectively met.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a device and a process for preparing methylcyclopentane from cyclohexene. Background technique [0002] Methylcyclopentane is an organic compound that is a colorless transparent liquid at normal temperature and pressure. Mainly used as reagents and chemical synthesis raw materials. [0003] At present, the industrial production of methylcyclopentane is mainly C 6 Obtained through further catalytic reaction and rectification, the process flow is long, the catalyst is expensive, and the reaction product is complex. [0004] Therefore, how to design a production method of methylcyclopentane with simple process and mild reaction is an urgent problem to be solved by those skilled in the art. Contents of the invention [0005] One of the purposes of the present invention is to provide a device for preparing methylcyclopentane from cyclohexene for the deficiencies in the prior art,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/03C07C13/10C07C5/29C07C7/04C07C13/12
CPCC07C5/03C07C5/29C07C7/04C07C2601/08C07C2601/10C07C2523/755C07C13/12C07C13/10
Inventor 陈恩之苗迎彬赵风轩赵培朝郭正谦朱伸兵
Owner CHONGQING HUAFON CHEM
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