Method of and arrangement for processing through low temperature heat exchanges and in particular for treating natural gases and cracked gases
US4072485A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1976 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Oct 4, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/902
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of processing through low temperature heat exchanges natural gases and cracked gases consisting in using a cooling cycle including compressing and then cooling a cycle mixture of gases consisting of C1 hydrocarbons, C2 hydrocarbons and C3 hydrocarbons through outer coolers with attendant total liquefaction of the cycle mixture under pressure; subsequently effecting a sub-cooling of the mixture within heat exchanges in counter-current relation to one expanded part thereof and/or cold returns and rejects of products processed in the cycle and finally expanding said sub-cooled mixture in at least one exchanger where various cooling processes of the treated products are carried out at successive temperature levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.