Hydrogen-concentrating process and apparatus
US4578952A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | May 8, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The starting gas is partly condensed in an exchanger 1. The refrigerating power is supplied, on one hand, by the free expansion of the liquid fraction and, on the other hand, by expansion in a gas-bearing turbine of the vapor fraction rich in hydrogen. A small part of this vapor fraction is used to feed auxiliary gases to the turbine, then is cooled in the exchanger 1, expanded and injected into the expanded liquid fraction so as to obtain a sufficiently low bubble point. The invention is useful in recovering hydrogen from purge gases of apparatus for ammonia synthesis, the purge gases being composed of hydrogen and less volatile components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.