CCC/191 ISBN 978-92-9029-511-2
December 2011
copyright © IEA Clean Coal Centre
Abstract
Pre-combustion capture involves reacting a fuel with oxygen or air and/or steam to give mainly a
‘synthesis gas (syngas)’ or ‘fuel gas’ composed of carbon monoxide and hydrogen. The carbon
monoxide is reacted with steam in a catalytic reactor, called a shift converter, to produce CO2 and
more hydrogen. CO2 is then separated, usually by a physical or chemical absorption process, resulting
in a hydrogen-rich fuel which can be used in many applications, such as boilers, furnaces, gas
turbines, engines and fuel cells. This report examines the use of pre-combustion capture in coal
fuelled integrated gasification combined cycle (IGCC) plants. After the introduction there follows a
short discussion of the water-gas shift (WGS) reaction. This is followed by chapters on the means of
CO2 capture by physical and chemical solvents, solid sorbents, and membranes. The results and
conclusions of techno-economic studies are introduced followed by a look at some of the pilot and
demonstration plants relevant to pre-combustion capture in IGCC plants.
Attachment | Size |
---|---|
![]() | 1.02 MB |