Apparatus and process for removing carbon dioxide from combustion exhaust gas
US5318758A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 9, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Mar 9, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and a process for removing CO.sub.2 from a combustion exhaust gas, by effecting counterflow contact of aqueous alkanolamine solution with the combustion exhaust gas to absorb CO.sub.2 from the gas in the alkanolamine solution and effecting a further contact of the gas with either, condensate water formed by causing condensation of the gas after removal of CO.sub.2, or condensate water formed by causing condensation of the combustion exhaust gas directly after combustion of the fuel. The apparatus includes a tower (1), a first contact section (2) in the tower through which the exhaust gas flows upwardly in counterflow contact with the aqueous alkanolamine solution dispersed by a nozzle device (7) downstream of the first contact section (2), a second contact section (3) in the tower (1) downstream of the nozzle device (7) for effecting counterflow contact of reflux water from a spent absorbent liquor regenerating tower (28) with the gas after removal of CO.sub.2. The temperature of the aqueous alkanolamine solution to be supplied to the CO.sub.2 -removing tower (1) is adjusted in such a manner that the temperature of the exhaust gas at the entrance (4) of the CO.sub.2 -r…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.