Title:
METHOD AND ARRANGEMENT FOR EXPANDING A GAS STREAM COMPRISING CARBON DIOXIDE
Document Type and Number:
WIPO Patent Application WO/2012/101502
Kind Code:
A3
Abstract:
The present disclosure relates to a method and an arrangement (1) for expanding a gas stream comprising carbon dioxide, CO2, the method comprising: removing CO2 from a process gas to produce a CO2 lean gas stream comprising residual CO2; monitoring a temperature of the gas stream downstream of an expander (7,10,16); controlling a pressure of the gas stream downstream of the expander by means of a pressure controller (9,15,21); and overriding the pressure controller when the temperature downstream of the expander is below a predefined minimum temperature; whereby deposition of solid CO2 from the residual CO2 in the gas stream is avoided. The disclosure also relates to a gas cleaning system and a power plant, such as an oxy-combustion power plant, associated with the arrangement.
Inventors:
STALLMANN OLAF (DE)
Application Number:
PCT/IB2012/000101
Publication Date:
March 27, 2014
Filing Date:
January 24, 2012
Export Citation:
Assignee:
ALSTOM TECHNOLOGY LTD (CH)
STALLMANN OLAF (DE)
STALLMANN OLAF (DE)
International Classes:
F25J3/02; F25J3/06
Foreign References:
| US20080196584A1 | 2008-08-21 | |||
| JPH0564722A | 1993-03-19 | |||
| US3614872A | 1971-10-26 | |||
| US3355901A | 1967-12-05 | |||
| DE3639555A1 | 1988-05-26 | |||
| EP1031803A2 | 2000-08-30 | |||
| FR2443037A1 | 1980-06-27 |
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