Skip Navigation Links.

Search for publications:

Limit search to the fields

ECN publication
Shell coal IGCCS with carbon capture: Conventional gas quench vs. innovative configurations
Martelli, E.; Kreutz, T.; Carbo, M.C.; Consonni, S.; Jansen, D.
Published by: Publication date:
ECN Biomass, Coal and Environmental Research 6-7-2011
ECN report number: Document type:
ECN-W--11-025 Article (scientific)
Number of pages:

Published in: Applied Energy (Elsevier), , 2011, Vol.88, p.3978-3989.

The Shell coal integrated gasification combined cycle (IGCC) based on the gas quench system is one of the most fuel flexible and energy efficient gasification processes because is dry feed and employs high temperature syngas coolers capable of rising high pressure steam. Indeed the efficiency of a Shell IGCC with the best available technologies is calculated to be 47–48%. However the system looses many percentage points of efficiency (up to 10) when introducing carbon capture. To overcome this penalty, two approaches have been proposed. In the first, the expensive syngas coolers are replaced by a ‘‘partial water quench’’ where the raw syngas stream is cooled and humidified via direct injection of hot water. This design is less costly, but also less efficient. The second approach retains syngas coolers but instead employs novel water–gas shift (WGS) configurations that requires substantially less steam to obtain the same degree of CO conversion to CO2, and thus increases the overall plant efficiency. We simulate and optimize these novel configurations, provide a detailed thermodynamic and economic analysis and investigate how these innovations alter the plant’s efficiency, cost and complexity.

Back to List