Abstract
The problem of yellow plume exists in most heavy-duty gas turbine units under start-up and low load conditions. How to suppress the yellow plume is a difficult problem in gas turbine power plants. It is judged that yellow plume is caused by the high NO2 concentration in flue gas. From the point of view of mechanism research, this study analyzed the causes of yellow plume by numerical simulation combined with experimental research; obtained influence factors of the conversion of NO into NO2; analyzed the degree of influence of these factors on the formation of yellow plume; verified the results through on-site measurement of a 6FA gas turbine unit; and finally proposed the countermeasures to suppress yellow plume from the gas turbine side and the heat recovery steam generator (HRSG) side.
Highlights
Gas-fired power generation is cleaner and more efficient than coal-fired power generation, in recent years, China’s installed capacity of natural gas power generation has expanded rapidly under the background of increasing economic affordability
It is judged that yellow plume is caused by the increase of NO2 content in flue gas
By changing the temperature of the flue gas and the volume fraction of O2/CO/H2O in the flue gas, this study investigated the influence of various factors on the conversion of NO to NO 2, which would provide investigated investigated the the influence influence of ofvarious variousfactors factorson onthe theconversion conversionof ofNO
Summary
Gas-fired power generation is cleaner and more efficient than coal-fired power generation, in recent years, China’s installed capacity of natural gas power generation has expanded rapidly under the background of increasing economic affordability. By the end of 2017, the installed capacity of China’s natural gas power generation projects was 75.7 gigawatts, accounting for 4.3% of the total installed capacity of the country. According to the “13th Five-Year China electricity plan”, China’s installed capacity of gas power generation projects will reach 110 million kilowatts in 2020. How to suppress yellow plume is a difficult problem to be solved urgently in gas power plants. Combined with the on-site measurement results of one 6FA gas turbine unit, the study analyzed and verified the preceding results, and gave the countermeasures to suppress yellow plume
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