Method and system for preparing butadiene

A technology of butadiene and butadiene, which is applied in the field of preparing butadiene, can solve problems such as butadiene needs to be improved, butadiene production cost is high, and supply risks exist, so as to improve efficiency, safety performance, and industrial applicability The effect of increasing and reducing production costs

Active Publication Date: 2012-08-08
ANHUI ANQING SHUGUANG CHEM GRP +1
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, my country's increasingly scarce oil resources lead to higher and higher production costs of butadiene and supply risks
[0004] Therefore, the means for preparing butadiene still needs to be improved

Method used

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  • Method and system for preparing butadiene
  • Method and system for preparing butadiene

Examples

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Embodiment 1

[0040] figure 1 A schematic diagram of the overall system for preparing butadiene employed in Example 1 is shown, figure 2 A schematic diagram of a butadiene separation device according to an embodiment of the present invention is shown.

[0041] Vinyl acetylene was mixed with nitrogen, hydrogen and CO, and the composition of the obtained mixed gas was 29% vinyl acetylene, 40% hydrogen, 30% nitrogen and 1% CO (volume ratio) to obtain hydrogenation reaction raw materials. The hydrogenation reaction raw material enters the fixed-bed reactor (catalyst is 0.1%Pd / Al 2 o 3 , reaction temperature 30°C, normal pressure, vinyl acetylene space velocity 100ml·gcat -1 h -1 ) to carry out hydrogenation reaction, the hydrogenation reaction product gas mixture (the first gas mixture) coming out from the reactor is vinyl acetylene, butadiene, 1-butene, cis 2-butene, trans 2-butene and Butane gas mixture. The hydrogenation reaction product gas mixture (the first gas mixture) is joined i...

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Abstract

The invention relates to a method and a system for preparing butadiene. The method for preparing the butadiene comprises the steps as follows: enabling vinyl acetylene and hydrogen to be subjected to hydrogenation reaction so as to obtain a first mixture containing the butadiene; and separating the butadiene from the first mixture. Due to the method, the butadiene can be effectively prepared with the vinyl acetylene as a raw material, the method is safe and reliable, and the production cost can be remarkably reduced.

Description

technical field [0001] The present invention relates to methods and systems for producing butadiene. Background technique [0002] Butadiene is an important petrochemical basic organic raw material and synthetic rubber monomer. Its position in petrochemical olefin raw materials is second only to ethylene and propylene, and it has a wide range of uses. It can not only be used in the production of organic chemical products such as adiponitrile, 1,4-butanediol, as well as adhesives, gasoline additives, etc., but also in the synthesis of butadiene rubber (BR) and styrene-butadiene rubber (SBR). , Nitrile rubber, styrene-butadiene-styrene elastomer (SBS), acrylonitrile-butadiene-styrene (ABS) resin and other rubber products. [0003] The production methods of butadiene that have been used in industry mainly include acetylene method, ethanol method, butene dehydrogenation method, butane dehydrogenation method, butene oxidative dehydrogenation method and petroleum C4 fraction sepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/167C07C5/09C07C7/04C07C7/11
Inventor 韩明汉刘建国丁佐纯汪展文
Owner ANHUI ANQING SHUGUANG CHEM GRP
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