Process to control conversion of C4+ and heavier stream to...

Details Process to control conversion of C4+ and heavier stream to... Process to control conversion of C4+ and heavier stream to...

2005-01-18

2005-01-18

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce unsaturate

C585S326000, C585S327000, C585S329000, C585S639000, C585S638000, C585S640000, C585S648000, C585S650000

Reexamination Certificate

active

06844476

ABSTRACT:
A method for converting heavy olefins present in a product stream exiting a first reaction zone into light olefins and carbonaceous deposits on a catalyst without separation of the heavy olefins from the product stream exiting the first reaction zone. The method comprises creating the product stream exiting the first reaction zone, the product stream exiting the first reaction zone comprising the heavy olefins, moving the product stream exiting the first reaction zone to a second reaction zone without separation of the heavy olefins from the product stream exiting the first reaction zone, and contacting the product stream exiting the first reaction zone with the catalyst under conditions effective to form the light olefins, the contacting causing the carbonaceous deposits to form on at least a portion of the catalyst.

REFERENCES:
patent: 5914433 (1999-06-01), Marker

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