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Heat integration and analysis of decarbonised IGCC sites

Ng, KS, Lopez, Y, Campbell, GM and Sadhukhan, J (2010) Heat integration and analysis of decarbonised IGCC sites Chemical Engineering Research and Design, 88 (2). 170 - 188. ISSN 0263-8762

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Abstract

Integrated gasification combined cycle (IGCC) power generation systems have become of interest due to their high combined heat and power (CHP) generation efficiency and flexibility to include carbon capture and storage (CCS) in order to reduce CO2 emissions. However, IGCC’s biggest challenge is its high cost of energy production. In this study, decarbonised coal IGCC sites integrated with CCS have been investigated for heat integration and economic value analyses. It is envisaged that the high energy production cost of an IGCC site can be offset by maximising site-wide heat recovery and thereby improving the cost of electricity (COE) of CHP generation. Strategies for designing high efficiency CHP networks have been proposed based on thermodynamic heuristics and pinch theory. Additionally, a comprehensive methodology to determine the COE from a process site has been developed. In this work, we have established thermodynamic and economic comparisons between IGCC sites with and without CCS and a trade-off between the degree of decarbonisation and the COE from the heat integrated IGCC sites. The results show that the COE from the heat integrated decarbonised IGCC sites is significantly lower compared to IGCC sites without heat integration making application of CCS in IGCC sites economically competitive.

Item Type: Article
Additional Information: NOTICE: This is the author’s version of a work that was accepted for publication in Chemical Engineering Research and Design. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemical Engineering Research and Design, 88(2), February 2010, DOI: 10.1016/j.cherd.2009.08.002
Uncontrolled Keywords: Economic analysis, Heat integration, IGCC, CHP, CCS, Decarbonisation, Gasification, Energy efficiency, GASIFICATION COMBINED-CYCLE, POWER-PLANTS, CO2 CAPTURE, PERFORMANCE, OPTIMIZATION, SYSTEMS
Divisions: Faculty of Engineering and Physical Sciences > Centre for Environmental Strategy
Depositing User: Symplectic Elements
Date Deposited: 13 Apr 2012 10:37
Last Modified: 23 Sep 2013 19:21
URI: http://epubs.surrey.ac.uk/id/eprint/406524

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