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contributor authorYujie Xu
contributor authorHongguang Jin
contributor authorRumou Lin
contributor authorWei Han
date accessioned2017-05-09T00:27:49Z
date available2017-05-09T00:27:49Z
date copyrightSeptember, 2008
date issued2008
identifier issn1528-8919
identifier otherJETPEZ-27035#051801_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/137871
description abstractA partial gasification combined cycle with CO2 recovery is proposed in this paper. Partial gasification adopts cascade conversion of the composition of coal. Active composition of coal is simply gasified, while inactive composition, that is char, is burnt in a boiler. Oxy-fuel combustion of syngas produces only CO2 and H2O, so the CO2 can be separated through cooling the working fluid. This decreases the amount of energy consumption to separate CO2 compared with conventional methods. The novel system integrates the above two key technologies by injecting steam from a steam turbine into the combustion chamber of a gas turbine to combine the Rankine cycle with the Brayton cycle. The thermal efficiency of this system will be higher based on the cascade utilization of energy level. Compared with the conventional integrated gasification combined cycle (IGCC), the compressor of the gas turbine, heat recovery steam generator (HRSG) and gasifier are substituted for a pump, reheater, and partial gasifier, so the system is simplified obviously. Furthermore, the novel system is investigated by means of energy-utilization diagram methodology and provides a simple analysis of their economic and environmental performance. As a result, the thermal efficiency of this system may be expected to be 45%, with CO2 recovery of 41.2%, which is 1.5–3.5% higher than that of an IGCC system. At the same time, the total investment cost of the new system is about 16% lower than that of an IGCC. The comparison between the partial gasification technology and the IGCC technology is based on the two representative cases to identify the specific feature of the proposed system. The promising results obtained here with higher thermal efficiency, lower cost, and less environmental impact provide an attractive option for clean-coal utilization technology.
publisherThe American Society of Mechanical Engineers (ASME)
titleSystem Study on Partial Gasification Combined Cycle With CO2 Recovery
typeJournal Paper
journal volume130
journal issue5
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.2938273
journal fristpage51801
identifier eissn0742-4795
keywordsTemperature
keywordsCombustion
keywordsCombustion chambers
keywordsBoilers
keywordsCoal
keywordsSyngas
keywordsCycles
keywordsFuel gasification
keywordsSteam
keywordsIntegrated gasification combined cycle
keywordsGas turbines
keywordsExergy
keywordsCompressors
keywordsPressure
keywordsOxygen AND Pumps
treeJournal of Engineering for Gas Turbines and Power:;2008:;volume( 130 ):;issue: 005
contenttypeFulltext


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