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Isomerization process of butene in etherified liquefied petroleum gas

A technology of liquefied gas and isomerization, which is used in isomerization to produce hydrocarbons, organic chemistry, etc., can solve the problem that the use effect of pure combustion is not as good as that of civil gas, and achieve the effects of low cost, sufficient sources and high conversion efficiency.

Inactive Publication Date: 2014-04-23
YUHUA CHEM PLANT BINZHOUSNDONG PROV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Ether liquefied gas can be used as civil liquefied gas, but its price is more expensive than ordinary civil gas, and the effect of pure combustion is not as good as civil gas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0017] Methanol and mixed C4 containing isobutene undergo etherification reaction. After methanol and ether are separated, the rest is liquefied gas after ether, and its main components are about 40% isobutane, about 15% n-butane, 45% % of n-butene.

[0018] After ether, the liquefied gas passes through the water washing tower to remove impurities such as methanol and metal cations, and after the C3 fraction is removed through the C3 removal tower, it enters the raw material-reaction product heat exchanger for heat exchange, and then is heated to 260-420°C, and enters the reactor and catalyst Carry out isomerization reaction, the pressure in the reactor is 0.25-0.35MPa, the reaction product passes through the raw material-reaction product heat exchanger for heat exchange, after two times of cooling, it enters the liquid separation tank for product separation, and the liquid phase product directly enters the stabilization tower, The liquid obtained after the gas phase product p...

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PUM

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Abstract

The invention discloses an isomerization process of butene in etherified liquefied petroleum gas. Materials at an outlet of an etherification device for producing MTBE (Methyl Tert-Butyl Ether) contain a large amount of n-butene, and skeletal isomerization is carried out on the materials rich in n-butene to produce isobutene so as to reach the purpose of increasing the isobutylene production. An isomerization reactor is a fixed bed reactor, a catalyst is a ZSM-5 molecular sieve with a molar ratio of SiO2 / Al2O3 being 200-500, the specific surface is 300-500m<2> / g, and the average pore diameter is 2-8nm.

Description

technical field [0001] The invention relates to the technical field of recovery and utilization of post-ether liquefied gas, in particular to a butene isomerization process in post-ether liquefied gas. Background technique [0002] Methyl tert-butyl ether is an additive, a colorless liquid with an ether-like odor, slightly soluble in water, and can be used as a gasoline additive to replace tetraethyl lead. It has excellent performance and high efficiency, and has a good market prospect. MTBE is produced by the etherification reaction of methanol and mixed C4 containing isobutene under the action of a macroporous strong acid cationic resin as a catalyst. The product MTBE is used to produce high-purity isobutene, or as an additive to increase the octane number in the production of high-grade gasoline. The excess methanol in the etherification reaction is recovered for use. After the etherification reaction, after methanol and ether are separated, the rest is liquefied gas aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/09C07C5/27
Inventor 胡从王振坤盖建忠
Owner YUHUA CHEM PLANT BINZHOUSNDONG PROV
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