Analysis on Combustion Characteristics of GE 6FA DLN2.6 Combustion System

doi:10.11930/j.issn.1004-9649.201907039

Abstract

Abstract: This paper analyzes the structural characteristics and operation modes of the DLN2.6 combustion system, as well as the data recorded in the combustion tuning process. Then it is concluded that for the DLN2.6 combustion system, the PM split value and the actual fuel flow distribution value in the control system are conceptually different, where PM1 split affects PM1, PM3 and PM2 nozzle flow while PM3 split only affects PM3 and PM2 nozzle flow. During the premixing mode operation, the nozzles with higher local fuel-air ratio have significant effects on the pollutant discharge and pressure pulsation of the gas turbine, which may vary with the load variations. In the adjustment process, the nozzle flow status should be taken into consideration whenever any abnormal increase of the pressure pulsation value of the burner is observed.

Key words: gas turbine, combustion tuning, dry low NO_x combustion system, combustion pressure pulsation, NO_x emission

CLC Number:

TK14

DING Yang, SHI Yongfeng, HAO Jiangang. Analysis on Combustion Characteristics of GE 6FA DLN2.6 Combustion System[J]. Electric Power, 2019, 52(12): 165-170.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201907039

https://www.electricpower.com.cn/EN/Y2019/V52/I12/165

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