Adsorption processes with intermediate product recovery using two adsorption zones
US5106396A · kind A · utility
Inventor
Key dates
| Filing date | Dec 3, 1990 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Dec 3, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Adsorption processes are provided for the separation of a feedstream containing less readily, intermediately, and more readily adsorbable components using first and second adsorption zones. The second adsorption zone utilizes a cycle that includes a cocurrent displacement step and the intermediately adsorbable components are recovered therefrom by countercurrent depressurization. The first adsorption zone is purged with a stream from the second adsorption zone to recover the more readily adsorbable components. The processes are particularly suitable for recovering carbon monoxide from feedstreams containing hydrogen, carbon monoxide and other compounds such as methanol and higher alcohols, methane, dimethyl ether, dimethyl ketone, water, carbon dioxide, oxygen and mixtures thereof. The processes are particularly applicable to methanol reforming processes wherein hydrogen and carbon monoxide product streams are recovered from a methanol reactor effluent stream also containing components selected from methanol, methane, dimethyl ether, carbon dioxide, oxygen and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.