Process for producing ethylene
AssigneesChina Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology, Sinopec
InventorsHepan LU, Yangdong WANG, Weisheng YANG, Jiawei TENG
Life of this patent
Estimating the term…
Abstract
A process for producing ethylene includes the steps of: (1) catalytically cracking a raw material hydrocarbon to obtain a first stream containing propylene; (2) separating the first stream to obtain a C3 component stream; and (3) disproportionating the C3 component stream to obtain an ethylene stream. This process reduces the overall energy consumption of the production process and increases the total yield of the ethylene while obtaining a polymerization-grade ethylene.
Claims14
A process for producing ethylene, comprising the steps of:
- (1) catalytically cracking a raw material hydrocarbon to obtain a first stream containing propylene, wherein the raw material hydrocarbon comprises at least C4 olefin, preferably at least one olefin selected from the group consisting of C4 olefin, C5 olefin, C6 olefin, C7 olefin and C8 olefin, or at least one olefin selected from the group consisting of C4 olefin, C5 olefin and C6 olefin;
- (2) separating (e.g., rectifying) the first stream to obtain a C3 component stream;
- and
- (3) disproportionating the C3 component stream to obtain an ethylene stream.
Dependencies are inferred from the claim text.