Method for preparing purified petroleum benzine and concentrating thiofuran by cruden benzol

A technology for thiophene and crude benzene, which is applied in the field of preparing pure benzene and concentrated thiophene from crude benzene, can solve problems such as harsh technical conditions, equipment corrosion, environmental pollution, etc., and achieves high product quality specifications, mild desulfurization conditions, and simple process flow. Effect
CN100450982CInactive Publication Date: 2009-01-14BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
Publication Date
2009-01-14
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A process for preparing high-purity benzene and concentrated thiophene from crude benzene features use of two-class extracting and rectification. Its advantages are simple process, low corrosion to equipment, low cost and high output rate.
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Description

technical field

[0001] The present invention relates to the deep processing and utilization of by-products (i.e. crude benzene) produced in the industrial production process of iron and steel enterprises and coking enterprises, in particular, to a kind of crude benzene as raw material, through pre-fractionation unit, two-stage extraction and rectification Process for unitary preparation of pure benzene and thiophene concentrates. Background technique

[0002] Benzene is an important basic organic chemical raw material. The annual consumption of benzene as an intermediate in organic chemical and fine chemical raw materials in my country accounts for about 45%-50% of domestic benzene production. The domestic petroleum benzene raw material has been in short supply, and the price is relatively low. High, which makes coking benzene an important source of local fine chemical raw materials, and its demand is increasing year by year.

[0003] Thiophene is a very expensive chemical r...

Claims

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