Process for recovering lower carbon olefins from product gas for production of olefins
US7707852B2 · kind B2 · utility
2Cited by
10References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Aug 29, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention concerns a process for recovering lower carbon olefins from MTO or DTO product gas. Said process primarily comprises the product gas compressing, pre-deethanizing, demethanizing and ethylene recovering apparatus, depropanizing column, ethylene rectification column, propylene rectification column and the like. In addition, the process of the present invention needs no independent ethylene cooling system, and the ethylene recovery rate may achieve 99.5%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.