Method for directly separating and purifying cyclopentene from C5 raw material adopting extraction and distillation technology

A technology of extractive distillation and extractive distillation column, which is applied in the field of separation of high-purity cyclopentene by extractive distillation technology, can solve problems such as high operational risk and complex production process, and achieve simple process flow, reduced production cost, and high production efficiency. low cost effect
CN101544534BActive Publication Date: 2012-04-25SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
Publication Date
2012-04-25

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Abstract

The invention discloses a method for directly separating and purifying cyclopentene from C5 raw materials adopting the extraction and distillation technology. Under the existence of an inhibitor of tributyl citrate, the C5 raw materials after heat polymerization is distilled through a distillation tower, extracted through an extraction tower and washed through a water scrubber to obtain a cyclopentene product. Through the extraction and distillation technology, and on the basis of not influencing the yield and the purity of isoprene, cyclopentadiene and pentadiene, the invention directly carries out separation and purification on the C5 raw materials to obtain the cyclopentene product with high purity of above 99 percent, and enhances the added value of the comprehensive utilization of C5resources. The invention has the advantages of simple technological process, mild operation condition and low production cost, and can replace the technology of cyclopentadiene hydrogenation preparing cyclopentene which is widely adopted at present.
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Description

technical field

[0001] The invention belongs to the field of petrochemical technology, and relates to a method for separating cyclopentene from ethylene cracking by-product carbon five raw materials, in particular to a method for separating high-purity cyclopentene from ethylene cracking by-product carbon five raw materials through extraction and rectification technology ene method. Background technique

[0002] In the process of producing ethylene from petroleum cracking, about 15% of the C5 mixture will be produced by-product, and the isoprene, cyclopentadiene, piperylene and other diolefins in the C5 mixture account for about 50% of the total content. In addition, It also contains a considerable amount of alkanes and monoolefins. Among them, the separation of isoprene and cyclopentadiene has formed a mature technology and is used in industrial production, but there is no relevant report on the utilization of monoolefins with higher added value.

[0003] Cyclopentene is ...

Claims

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