Engineering and economic evaluation of integrated gasification compressed air storage with humidification (IGCASH). Final report
Technical Report
·
OSTI ID:10107934
- Bechtel Group, Inc., San Francisco, CA (United States)
- Energy Storage and Power Consultants, Inc., Mountainside, NJ (United States)
Integrated Gasification Compressed Air Storage with Humidification (IGCASH) is concept for an intermediate-load, cycling-duty plant with the environmental advantages of coal gasification and the reliability benefits of continuous operation of the hot gasification and turbomachinery equipment. The IGCASH concept integrates a quench-type coal gasification system with an advanced compressed air storage system in which the compression heat is recovered and stored in water which is used to humidify and preheat the air and fuel gas sent to the turbine. Bechtel under contract to EPRI (RP 2834-3) performed an engineering and economic evaluation to verify the feasibility of IGCASH as an option for intermediate-load power generation from coal. A baseline design was developed for a conceptual 400 MW generic IGCASH plant using currently available technology, including the Texaco full-quench gasification process, Westinghouse turbomachinery, and solution-mined salt-dome cavern for air storage. Three alternatives to the baseline design were also developed to assess the effects of storage water temperature and next-generation turbomachinery on plant performance and economics. The IGCASH concept compared favorably with conventional pulverized coal fired steam (PCFS) power generation. The IGCASH baseline design showed a significantly lower heat rate and yielded a lower cost of electricity than a comparable PCFS plant operating on the same duty cycle.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); Bechtel Group, Inc., San Francisco, CA (United States); Energy Storage and Power Consultants, Inc., Mountainside, NJ (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 10107934
- Report Number(s):
- EPRI-TR--103347; ON: UN94004181
- Country of Publication:
- United States
- Language:
- English
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