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이민철(Min Chul Lee),서석빈(Seok Bin Seo),정재화(Jae Hwa Chung),주용진(Youg Jin Joo),안달홍(Dal Hong Ahn) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
DME (Dimethyl Ether, CH₃OCH₃) has highly attracted attention as an alternative fuel for transportation, power generation and LPG substitute owing to its easy transportation and cleanliness. This study was conducted to verify the combustion performance and to identify potential problems when DME is fuelled to a gas turbine. GE7EA gas turbine of Pyong-Tak power plant was selected as a target to apply the DME. Combustion tests were conducted by comparing DME with methane, which is a major component of natural gas, in terms of combustion instability, NOx and CO emissions, and the outlet temperature of the combustion chamber. The results of the performance tests show that DME is very clean but has a low combustion efficiency in low load condition. From the results of the fuel nozzle temperature we have ascertained that DME is easy to flash back, and this property should be considered when operating a gas turbine and retrofitting a burner.
H₂/CO 합성가스와 메탄의 GE7EA 모사가스터빈 연소성능시험
이민철(Min Chul Lee),서석빈(Seok Bin Seo),주용진(Youg Jin Joo),김시문(Si-Moon Kim),안달홍(Dal Hong Ahn) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
IGCC technology makes it possible to utilize the low cost and clean electricity generation from coal, biomass, petroleum coke, wastes and etc. On top of that, IGCC is pre-requisite to develop the technology of CCS and hydrogen generation from coal. This study was conducted to verify the combustion performance of synthetic gas and to identify potential problems when synthetic gas is fuelled to a gas turbine. GE7EA gas turbine of Pyong-Tak power plant was selected for this study. Combustion tests were conducted by comparing hydrogen and carbon monoxide synthetic gas with methane, which is a major component of natural gas, in terms of combustion instability, NOx emission, and the exit gas temperature of the combustor. From the results of the fuel nozzle temperature we have ascertained that syngas is easy to flash back, and this property should be considered when operating a gas turbine and retrofitting a burner.
석탄으로부터 생성된 합성가스의 가스터빈 고압 연소성능시험
이민철(Min Chul Lee),서석빈(Seok Bin Seo),박세익(Se Ik Park),윤영빈(Young Bin Youn) 한국연소학회 2011 KOSCOSYMPOSIUM논문집 Vol.- No.42
With great interest about IGCC(Integrated Gasification Combined Cycle) which is one of the potential technology of Low Carbon Green Growth, Korea government launched second stage of 300㎿ demo-IGCC plant construction project.(Project Supervisor : KEPCO, Plant Owner : Korea Western Power Corporation) This korea first IGCC plant will be constructed in Tae-an in 2015, but the low availability and operability issues are raised because there is neither any IGCC plant operation experiences nor skilled operator From other IGCC plants experiences in the world., we get to know that gas turbine failures are main source of low availability. Thus to enhance the combustion performance and reliability in the combined cycle island, coal-derived synthetic gas combustion performance test was conducted in KEPCO research institute. Combustion test was conducted in high pressure high temperature condition with the gas turbine model combustor of GE7EA. From the test, some important characteristics of coal gas including turbine inlet temperature, dynamic pressure, NOx emission and combustion efficiency etc. was revealed. The results of the test can be able to be utilized for the operation and diagnostics of IGCC plant.
이민철(Min Chul Lee),윤영빈(Young Bin Youn) 한국연소학회 2011 KOSCOSYMPOSIUM논문집 Vol.- No.43
With great interest about energy and environmental concern, high efficient small gas turbine with distributed power generation is introduced as one of the potential solution for that problems. Using these atmosphere as the background, an experimental study on the double-swirl vertical type combustor of Doosan heavy industry 5 ㎿e class gas turbine was conducted and the combustion efficiency, pressure fluctuation and NOx emission characteristics were investigated. After diagnosing the combustion performance, the tuning test was conducted to optimize the combustion performance. Thus this paper presents the simple methods and detailed results of combustion tuning test as well as the combustion characteristics of double swirl vertical type combustor.