Iso-butane production device and method

A production device and a technology for isobutane, applied in the field of C4 light hydrocarbons, can solve the problems of excess n-butane and insufficient isobutane, and achieve the effect of improving economic benefits

Inactive Publication Date: 2017-10-31
SINOPEC ENG +1
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  • Summary
  • 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 in

Method used

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  • Iso-butane production device and method
  • Iso-butane production device and method
  • Iso-butane production device and method

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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 plant shown produces isobutane.

[0085] The isobutane production device includes: a first-stage hydrogenation reactor 35, a first-stage hydrogenation separation device, a first-stage hydrogenation circulation pump 39, a first-stage circulating cooler 40, a second-stage hydrogenation reactor 1, and heat exchange for hydrogenation inlet and outlet 2, second-stage hydrogenation feed heater 3, second-stage hydrogenation separation device, deethanizer 10, depropanizer 13, stabilization tower 17, isobutane product tower 20, isomerization inlet and outlet heat exchanger 23. An isomerization feed heater 24 and an isomerization reactor 25; wherein,

[0086] The C4 feed pipeline is connected to the first-stage hydrogenation reactor 35, the first-stage hydrogenation separation device, the hydrogenation inlet and outlet h...

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Abstract

The invention discloses an iso-butane production device and method. The device comprises a primary hydrogenation reactor, a primary hydrogenation separation device, a primary hydrogenation circulating pump, a primary circulation cooler, a secondary hydrogenation reactor, a hydrogenation feeding and discharging heat exchanger, a secondary hydrogenation feeding heater, a secondary hydrogenation separation device, a dethanizing column, a depropanizing column, a stabilizer, a finished iso-butane production tower, an isomerization feeding and discharging heat exchanger, an isomerization feeding heater and an isomerization reactor. The method comprises the following steps: enabling C4 raw materials to enter the device through a C4 material feeding pipeline, and hydrogenating and separating so as to produce iso-butane and n-butane; and carrying out an isomerization reaction on the n-butane, separating to produce the iso-butane, and obtaining the C3 by-product. According to the device and method disclosed by the invention, all C4-enriched light dydrocarbons can be treated, the waste heat is recovered, and the economic benefits of the device are improved.

Description

technical field [0001] The invention relates to the field of carbon four light hydrocarbons, and more particularly, relates to an isobutane production device and method. 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 utilization of isobutane has attracted mor...

Claims

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Application Information

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IPC IPC(8): C07C5/03C07C5/27C07C9/12
CPCC07C5/03C07C5/2724C07C9/12Y02P20/10
Inventor 杨照马立国高耸王鑫泉
Owner SINOPEC ENG
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