Process for separating C5 cuts obtained from a petroleum...

Details Process for separating C5 cuts obtained from a petroleum... Process for separating C5 cuts obtained from a petroleum...

2005-10-25

2005-10-25

Dang, Thaun D (Department: 1764)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce unsaturate

C585S330000, C585S809000, C585S833000

Reexamination Certificate

active

06958426

ABSTRACT:
The present invention relates to a process for separating the isoprene, 1,3-pentadiene and dicyclopentadiene from a C5 cuts, comprising dimerization of the cyclopentadiene and selective catalytic hydrogenation. The second extractive rectification step can be omitted, because the alkynes are removed through selective catalytic hydrogenation prior to the extractive rectification. As a result, the solvent-recovering units can be simplified, and thus the process as a whole can be optimized. Correspondingly, the investment and energy consumption, the operation cost, and finally the production cost can be substantially reduced.

REFERENCES:
patent: 2971036 (1961-02-01), Donald
patent: 3436438 (1969-04-01), Takao et al.
patent: 3510405 (1970-05-01), Takao et al.
patent: 1253130 (2000-05-01), None
patent: 96102485 (2000-09-01), None
patent: A 63 101338 (1988-05-01), None

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