High-pressure gas fractionating process and system
US6318119A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Dec 23, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process allowing to fractionate a gas, wherein: PA1 the gas is cooled from T.sub.0 to a temperature T.sub.1, PA1 at least part of gas phase G.sub.1 is sent to an expansion stage (X.sub.1) in order to obtain a mixed phase M.sub.2 at a temperature T.sub.2 and at a pressure P.sub.2, PA1 mixed phase M.sub.2 is sent to a heat exchange stage where it serves as a cooling agent, and after which it is heated, PA1 liquid phase L.sub.1 is sent to an expansion stage, PA1 the heated mixed phase and the expanded liquid phase are sent to a separation stage so as to obtain a gas phase and a liquid phase, and PA1 the gas phase is fractionated by distillation performed by means of continuous heat exchange with mixed phase M.sub.2, and the light constituents are extracted as gas and the heavy constituents as condensates, the fractionation stage being performed after the stage of expansion of mixed phase M.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.