Pressure swing adsorption process turndown control
US5733359A · kind A · utility
48Cited by
22References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/402
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The flow rate of a nonadsorbed product gas stream from a multiple unit PSA plant can be reduced in response to a reduced product demand by isolating all units in the plant and inserting an idle step into the adsorption cycle immediately following bed equalization steps of the cycle. In a preferred embodiment, the duration of the idle step is inversely proportional to the percentage reduction in the product demand. To maintain the product gas purity at the desired level, minor adjustments of the idle step duration can be made following adjustment to the idle step in response to a change in product demand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.