Selecting the process arrangement for preparing the gas turbine working fluid for an integrated gasification combined-cycle power plant / Ryzhkov A.F., Gordeev S.I., Bogatova T.F. // Thermal Engineering (English translation of Teploenergetika). - 2015. - V. 62, l. 11. - P. 796-801.

ISSN:
00406015
Type:
Article
Abstract:
Introduction of a combined-cycle technology based on fuel gasification integrated in the process cycle (commonly known as integrated gasification combined cycle technology) is among avenues of development activities aimed at achieving more efficient operation of coal-fired power units at thermal power plants. The introduction of this technology is presently facing the following difficulties: IGCC installations are characterized by high capital intensity, low energy efficiency, and insufficient reliability and availability indicators. It was revealed from an analysis of literature sources that these drawbacks are typical for the gas turbine working fluid preparation system, the main component of which is a gasification plant. Different methods for improving the gasification plant chemical efficiency were compared, including blast air high-temperature heating, use of industrial oxygen, and a combination of these two methods implying limited use of oxygen and moderate heating of blast air. Calculated investigations aimed at estimating the influence of methods for achieving more efficient air gasification are carried out taking as an example the gasifier produced by the Mitsubishi Heavy Industries (MHI) with a thermal capacity of 500 MW. The investigation procedure was verified against the known experimental data. Modes have been determined in which the use of high-temperature heating of blast air for gasification and cycle air upstream of the gas turbine combustion chamber makes it possible to increase the working fluid preparation system efficiency to a level exceeding the efficiency of the oxygen process performed according to the Shell technology. For the gasification plant’s configuration and the GTU working fluid preparation system be selected on a well-grounded basis, this work should be supplemented with technical-economic calculations. © 2015, Pleiades Publishing, Inc.
Author keywords:
air separation unit; chemical equilibrium; gasification plant; integrated gasification combined-cycle power plant; oxygen and air gasification; working fluid preparation system
Index keywords:
Air; Coal combustion; Combined cycle power plants; Combustion chambers; Energy efficiency; Fluids; Gas turbines; Gasification; Heating; Oxygen; Thermoelectric power plants; Turbine components; Air gas
DOI:
10.1134/S0040601515110075
Смотреть в Scopus:
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944034246&doi=10.1134%2fS0040601515110075&partnerID=40&md5=3ac23e1ad2f5362d79695016c0406e41
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Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944034246&doi=10.1134%2fS0040601515110075&partnerID=40&md5=3ac23e1ad2f5362d79695016c0406e41
Affiliations Ural Federal University, ul. Mira 19, Yekaterinburg, Russian Federation
Author Keywords air separation unit; chemical equilibrium; gasification plant; integrated gasification combined-cycle power plant; oxygen and air gasification; working fluid preparation system
Funding Details 14-19-00524, RSF, Russian Science Foundation
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Correspondence Address Ryzhkov, A.F.; Ural Federal University, ul. Mira 19, Russian Federation
Publisher Maik Nauka-Interperiodica Publishing
CODEN THENA
Language of Original Document English
Abbreviated Source Title Therm Eng
Source Scopus