Energy-saving distillative separation using low-temperature heat input
US4444576A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1982 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Nov 1, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for the distillative separation of a feed stream containing light hydrocarbons and acid gas components in a distillative column into an enriched overhead product, such as a carbondioxide fraction, and an enriched bottom product of C.sub.2 + and hydrogen sulfide, the method which comprises: introducing a liquid alkane additive into the column, to provide a relatively uniform, constant temperature zone in the column above the point of feed inlet of the feed stream; extracting heat from the upper portion of the low-temperature zone; and introducing heat into the lower portion of the temperature zone approximately at or above the feed inlet of the feed stream, to reduce the energy requirement of the distillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.