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Device and method for producing isobutene through hydrogenation and isomerization

A technology of isomerization and isobutane, which is applied in the direction of isomerization hydrocarbon production, chemical instruments and methods, hydrogenation hydrocarbon production, etc., can solve the problems of n-butane surplus and isobutane deficiency, etc., and achieve the goal of improving economic benefits Effect

Inactive Publication Date: 2017-10-31
SINOPEC ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the problems in the prior art that there is a large surplus of low-value n-butane and insufficient high-value-added isobutane, the present invention provides a combined process and method for producing isobutane

Method used

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  • Device and method for producing isobutene through hydrogenation and isomerization
  • Device and method for producing isobutene through hydrogenation and isomerization
  • Device and method for producing isobutene through hydrogenation and isomerization

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Embodiment Construction

[0083] Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0084] use as figure 1 The combined plant shown produces isobutane.

[0085] The device includes: a first-stage hydrogenation reactor 32, a first-stage hydrogenation separation device, a first-stage hydrogenation circulation pump 36, a first-stage circulating cooler 37, a second-stage hydrogenation reactor 1, a hydrogenation inlet and outlet heat exchanger 2, a second-stage hydrogenation Hydrogen feed heater 3, second-stage hydrogenation separation device, light removal tower 10, stabilization tower 14, isobutane product tower 17, isomerization inlet and outlet heat exchanger 20, isomerization feed heater 21 and isomerization Texturization reactor 22; Wherein,

[0086] The C4 feed pipeline is connected to the first-stage hydrogenation reactor 32, the first-stage hydrogenation separation device, the hydrogenation inlet and outlet heat exc...

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Abstract

The invention relates to a device and method for producing isobutene through hydrogenation and isomerization. The device comprises a primary hydrogenation reactor, a primary hydrogenation separation device, a primary hydrogenation circulating pump, a primary circulating cooler, a hydrogenation feeding / discharging heat exchanger, a secondary hydrogenation reactor, a secondary hydrogenation feeding heater, a secondary hydrogenation separation device, a light fraction removal tower, a stabilization tower, an isobutane finished product tower, an isomerization feeding / discharging heat exchanger, an isomerization feeding heater and an isomerization reactor. The method comprises the steps of enabling a C4 raw material to enter into the device through a C4 feeding pipeline; preparing isobutene and normal butane products after hydrogenation and separation; and preparing the isobutene after isomerization reaction and separation of the normal butane and simultaneously producing byproducts, namely C2 and C3 products. All C4-enriched light dydrocarbon can be treated, and meanwhile, the waste heat is recovered, so that the economic benefit of the device is improved.

Description

technical field [0001] The invention relates to the field of carbon four light hydrocarbons, and more particularly, relates to a device and method for producing isobutane through hydrogenation and isomerization. Background technique [0002] With the continuous deepening of petrochemical processing depth, the C 4 The rational utilization of each component in the distillate has been paid more and more attention. C 4 The 1,3-butadiene contained in the distillate can be separated by extractive distillation for the production of synthetic rubber, C 4 The isobutene in the fraction reacts with methanol through an etherification unit to generate MTBE and can obtain high-purity 1-butene through further precise fractionation, and the utilization of other carbon four components is less. Isobutane can produce methyl methacrylate, isobutene, isobutanol, propylene oxide, etc. In recent years, as the demand for isobutene, isobutanol and propylene oxide has increased year by year, the ...

Claims

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Application Information

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IPC IPC(8): C07C5/03C07C5/27C07C9/12C07C9/10
CPCC07C5/03C07C5/2791C07C9/12C07C9/10Y02P20/10
Inventor 马立国杨照高耸王鑫泉
Owner SINOPEC ENG
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