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Title: Development of pressurized coal partial combustor

Abstract

The integrated gasification combined cycle (IGCC), an environment-friendly power generation system of high thermal efficiency, is being developed via various approaches around the world. The oxygen-blown entrained flow gasification process is a relatively simple method of producing medium calorie coal gas suitable for application to gas turbines. Various systems for this process have been developed to a demonstration level in Europe and America. Japan has actively been developing the air-blown process. However, taking stable molten slag discharge into consideration, coal must be supplied at two stages to raise the combustor temperature in ash molten part. Only two reports have been presented regarding two-stage coal supply. One is the report on an experiment with the Hycol gasifier, in which air feed ratio is varied, with coal feed fixed. The other is report on a simulation study with various gasifier coal feed ratios, conducted at Central Research Institute of Electric Power Industry. It seems that the appropriate feed ratio has not yet been established. Through this activity, a unique furnace construction has been established, and these influences of stoichiometric air ratio, of oxygen enrichment, of char recycling and of coal types on performance have been clarified. The purpose of the present studymore » is to apply this developed CPC techniques to a Pressurized CPC (PCPC), thereby improving the IGCC technology. For the present study, we conducted systematic experiments on the air-blown process with a two stage dry feed system, using a 7 t/d-coal bench scale PCPC test facility, operated at the pressure of 0.4 MPa, and clarified the influence of coal feed ratio on coal gasification performance. This report describes the above-mentioned bench scale test procedures and results, and also some informations about a plan of a 25 t/d-coal pilot test system.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Coal and Slurry Technology Association, Washington, DC (United States); USDOE Pittsburgh Energy Technology Center, PA (United States)
OSTI Identifier:
171625
Report Number(s):
CONF-950313-
ON: TI96120257; TRN: 95:007972-0055
Resource Type:
Conference
Resource Relation:
Conference: 20. international technical conference on coal utilization and fuels systems, Clearwater, FL (United States), 20-23 Mar 1995; Other Information: PBD: 1995; Related Information: Is Part Of Coal utilization and fuel systems: Proceedings; PB: 780 p.
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 01 COAL, LIGNITE, AND PEAT; FOSSIL-FUEL POWER PLANTS; BOILERS; COMBUSTORS; OPERATION; PERFORMANCE; COMBINED-CYCLE POWER PLANTS; COAL; COMBUSTION; TEST FACILITIES

Citation Formats

Yoshida, K., Ino, T., Yamamoto, T., and Kimura, N.. Development of pressurized coal partial combustor. United States: N. p., 1995. Web.
Yoshida, K., Ino, T., Yamamoto, T., & Kimura, N.. Development of pressurized coal partial combustor. United States.
Yoshida, K., Ino, T., Yamamoto, T., and Kimura, N.. 1995. "Development of pressurized coal partial combustor". United States. doi:.
@article{osti_171625,
title = {Development of pressurized coal partial combustor},
author = {Yoshida, K. and Ino, T. and Yamamoto, T. and Kimura, N.},
abstractNote = {The integrated gasification combined cycle (IGCC), an environment-friendly power generation system of high thermal efficiency, is being developed via various approaches around the world. The oxygen-blown entrained flow gasification process is a relatively simple method of producing medium calorie coal gas suitable for application to gas turbines. Various systems for this process have been developed to a demonstration level in Europe and America. Japan has actively been developing the air-blown process. However, taking stable molten slag discharge into consideration, coal must be supplied at two stages to raise the combustor temperature in ash molten part. Only two reports have been presented regarding two-stage coal supply. One is the report on an experiment with the Hycol gasifier, in which air feed ratio is varied, with coal feed fixed. The other is report on a simulation study with various gasifier coal feed ratios, conducted at Central Research Institute of Electric Power Industry. It seems that the appropriate feed ratio has not yet been established. Through this activity, a unique furnace construction has been established, and these influences of stoichiometric air ratio, of oxygen enrichment, of char recycling and of coal types on performance have been clarified. The purpose of the present study is to apply this developed CPC techniques to a Pressurized CPC (PCPC), thereby improving the IGCC technology. For the present study, we conducted systematic experiments on the air-blown process with a two stage dry feed system, using a 7 t/d-coal bench scale PCPC test facility, operated at the pressure of 0.4 MPa, and clarified the influence of coal feed ratio on coal gasification performance. This report describes the above-mentioned bench scale test procedures and results, and also some informations about a plan of a 25 t/d-coal pilot test system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1995,
month =
}

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  • The integrated gasification combined cycle (IGCC), an environment-friendly power generation system of high thermal efficiency, is being developed via various approaches around the world. Kawasaki Heavy Industries Ltd. has conducted R and D on a Coal Partial Combustor (hereinafter referred to as CPC) as a gasifier since 1984, jointly with the Center for Coal Utilization, Japan. Since 1994, Chubu Electric Power Co., Inc. and Electric Power Development Co, Ltd have been cooperating. Through this activity, a structure of the CPC has been established, and these influences of operating parameters on performance have been clarified. The purpose of the present studymore » is to apply this developed CPC techniques to a Pressurized CPC (hereinafter referred to as PCPC) as a gasifier for the IGCC system. For the present study, the authors conducted systematic experiments on the air-blown process with a two stage dry feed system, using a 7 t/d-coal bench scale test facility and a 25 t/d-coal pilot scale plant, clarified the influence of coal feed ratio, of oxygen enrichment, and of coal types on coal gasification performance. This paper describes conceptual structure of the PCPC, the test results of a 7 t/d-coal bench scale test facility, and 25 t/d-coal pilot plant.« less
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