NDLI: Development of Oxy-Fuel IGCC System With CO2 Recirculation for CO2 Capture: Experimental Examination on Effect of Gasification Reaction Promotion by CO2 Enriched Using Bench Scale Gasifier Facility

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Kidoguchi, Kazuhiro Hara, Saburo Oki, Yuso Kajitani, Shiro Umemoto, Satoshi Inumaru, Jun
Copyright Year	2011
Abstract	To cope with global warming problem, utility companies are required to reduce CO2 emission from pulverized coal fired power plants. Japanese utility companies are advancing various measures to improve plant thermal efficiency and to promote utilization of biomass as a fuel. In Europe and America, CO2 capture and storage (CCS) technology is regarded as one effective approach, and various demonstration projects are planned all over the world. However, the introduction of conventional CO2 capture system to power station causes a decrease in the plant thermal efficiency and an increase in the power generating cost. In this reason, it is necessary to develop a new power generating system with high thermal efficiency. Therefore, Central Research Institute of Electric Power Industry (CRIEPI) proposed an innovative integrated coal gasification combined cycle power generating system (IGCC) with CO2 capture whose plant thermal efficiency is very high, and is working on the research and development of the new system. This is a system to combine a new oxygen-CO2 blown coal gasifier in that captured CO2 is used with the closed gas turbine in which coal gas from the gasifier is burned with the gas mixed oxygen and recycled exhaust CO2. The system has the following features. The gasification performances improve greatly. The processes of concentrating and separating CO2 are unnecessary. It is estimated that the carbon conversion efficiency (CCE) and the cold gas efficiency (CGE) in oxygen-CO2 blown gasifier improve more than conventional oxygen blown gasifiers by the effect of the gasification reaction promotion of CO2 by gasifying coal with oxygen and CO2. As a result, the gasifier and the char recycling system can make to compact, and the equipment cost can be reduced. This paper reports on examination of CO2 promotion effect on the gasification performances by gasification test using a bench scale gasifier facility.
Sponsorship	Power Division
Starting Page	485
Ending Page	492
Page Count	8
File Format	PDF
ISBN	9780791844601
DOI	10.1115/POWER2011-55458
Volume Number	ASME 2011 Power Conference, Volume 2
Conference Proceedings	ASME 2011 Power Conference collocated with JSME ICOPE 2011
Language	English
Publisher Date	2011-07-12
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Oxygen Carbon dioxide Combined cycles Biomass Fuels Carbon Electricity (physics) Emissions Exhaust systems Climate change Integrated gasification combined cycle power stations Gas turbines Storage Industrial research Coal Power stations Thermal efficiency Recycling Carbon capture and storage Fuel gasification Public utilities
Content Type	Text
Resource Type	Article

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