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Iso-butane dehydrogenation technology and system

A technology for isobutane and dehydrogenation, which is applied in the field of isobutane dehydrogenation process and system, achieves the effects of simple structure, reduced dependence, and improved comprehensive utilization level

Pending Publication Date: 2018-08-24
BEIJING ZHONGKE RUIAO ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, there is a lack of technical solutions for converting cheap isobutane into high value-added isobutene

Method used

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  • Iso-butane dehydrogenation technology and system
  • Iso-butane dehydrogenation technology and system

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Embodiment Construction

[0024] Such as figure 1 , figure 2 Shown, isobutane dehydrogenation system of the present invention comprises:

[0025] The primary heat exchanger E01 used to initially cool down the feed gas;

[0026] The secondary heat exchanger E02, which is used to cool down the raw material gas initially cooled, is connected with the primary heat exchanger E01 through pipelines;

[0027] The first gas-liquid separator S01 is used for gas-liquid separation of the raw material gas after cooling down again, so that the raw material gas is separated into hydrogen-rich gas, liquid isobutane and isobutene.

[0028] The isobutane dehydrogenation system of the present invention also includes a mixed refrigerant circulation refrigeration system for providing cooling capacity to the primary heat exchanger E01 and the secondary heat exchanger E02, and the mixed refrigerant circulation refrigeration system The refrigerant flow direction includes the mixed refrigerant compressor K01 for compressin...

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Abstract

The invention relates to an iso-butane dehydrogenation technology and system. The iso-butane dehydrogenation system comprises a first-stage heat exchanger used for preliminary cooling of raw materialgas, a second-stage heat exchanger used for recooling of the raw material gas obtained after preliminary cooling and connected with the first-stage heat exchanger through a pipe, and a first gas-liquid separator used for conducting gas-liquid separation on the raw material gas obtained after recooling and enabling hydrogen rich gas and liquid-state iso-butane and isobutene to be separated out fromthe raw material gas. The iso-butane dehydrogenation technology comprises the steps that preliminary cooling of the raw material gas is carried out; the raw material gas obtained after preliminary cooling is subject to recooling; the raw material gas obtained after recooling is subject to gas-liquid separation, and the hydrogen rich gas and liquid-state iso-butane and isobutene are separated outfrom the raw material gas. According to the technical scheme, the structure is simple, efficiency is high, low-cost iso-butane can be well converted into high value-added isobutene, low-cost hydrogencan be provided for a refinery plant, dependence of olefin production on the cracking process is reduced, and the oil gas resource comprehensive utilization level is improved.

Description

technical field [0001] The invention relates to the extraction and utilization of chemical gas, in particular to an isobutane dehydrogenation process and system. Background technique [0002] Isobutylene is an important organic chemical raw material, mainly used in the preparation of butyl rubber, polyisobutylene, methacrylonitrile, antioxidants, tert-butylphenol, tert-butyl ether, etc. Among them, tert-butyl ether and butyl rubber are in great demand in the domestic market. [0003] At present, the production capacity and actual output of butyl rubber in my country are far from meeting the needs of domestic downstream industries, so it has to be imported every year, and the import volume has a tendency to increase continuously. [0004] Isobutane dehydrogenation can not only convert cheap isobutane into high value-added isobutene, but also provide cheap hydrogen for refineries, reduce the dependence of olefin production on cracking process, and improve the comprehensive ut...

Claims

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Application Information

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IPC IPC(8): F25J3/02
CPCF25J3/0223F25J3/0247F25J3/0252F25J3/0295
Inventor 丁胜军赵杰
Owner BEIJING ZHONGKE RUIAO ENERGY TECH CO LTD
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