Modeling of ultra superheated steam gasification in integrated gasification combined cycle power plant with carbon dioxide capture

Peng Pei*, Manohar Kulkarni

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Integrated Gasification Combined Cycle (IGCC) is believed to be one of the most promising technologies to offer electricity and other de-carbon fuels with carbon capture requirement as well as to meet other emission regulations at a relatively low cost. As one of the most important parts, different gasification technologies can greatly influence the performance of the system. This paper develops a model to examine the feasibilities and advantages of using Ultra Superheated Steam (USS) gasification technology in IGCC power plant with carbon dioxide capture and storage (CCS). USS gasification technology converts coal into syngas by the endothermic steam reforming reaction, and the heat required for this reaction is provided by the sensible heat in the ultra superheated steam. A burner utilizes synthetic air (21% O2 and 79% H 2O) to burn fuel gas to produce the USS flame for the gasification process. The syngas generated from USS gasification has a higher hydrogen fraction (more than 50%) then other gasification processes. This high ratio of hydrogen is considered to be desired for a "capture-ready" IGCC plant. After gas cleanup and water gas shift reaction, the syngas goes to the Selexol process for carbon dioxide removal. Detailed calculations and analysis are performed to test the performance of USS gasification technology used in IGCC generation systems. Final results such as net output, efficiency penalty for CO2 capture part, and net thermal efficiency are calculated and compared when three different coal types are used. This paper uses published data of USS gasification from previous research at the University of North Dakota. The model also tries to treat the IGCC with carbon dioxide capture system as a whole thermal system, the superheated steam used in USS gasification can be provided by extracting steam from the lower pressure turbine in the Rankine Cycle. The model will make reasonable use of various waste energies and steams for both mechanical and chemical processes to improve the performance of the plant, and incorporate CO2 capture system into the design concept of the power plant.

Original languageEnglish (US)
Title of host publication2008 Proceedings of the 2nd International Conference on Energy Sustainability, ES 2008
Pages763-773
Number of pages11
StatePublished - Oct 21 2009
Event2008 2nd International Conference on Energy Sustainability, ES 2008 - Jacksonville, FL, United States
Duration: Aug 10 2008Aug 14 2008

Publication series

Name2008 Proceedings of the 2nd International Conference on Energy Sustainability, ES 2008
Volume2

Other

Other2008 2nd International Conference on Energy Sustainability, ES 2008
CountryUnited States
CityJacksonville, FL
Period8/10/088/14/08

Keywords

  • Carbon dioxide capture
  • Electricity generation
  • USS gasification

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering

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    Pei, P., & Kulkarni, M. (2009). Modeling of ultra superheated steam gasification in integrated gasification combined cycle power plant with carbon dioxide capture. In 2008 Proceedings of the 2nd International Conference on Energy Sustainability, ES 2008 (pp. 763-773). (2008 Proceedings of the 2nd International Conference on Energy Sustainability, ES 2008; Vol. 2).