Experimental Study on the Spectroscopy of Opposed Impinging Diesel Flames Based on a Bench-Scale Gasifier
Experimental Study on the Spectroscopy of Opposed Impinging Diesel Flames Based on a Bench-Scale Gasifier
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DOI：
10.1021/acs.energyfuels.6b03239
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发表时间：
2017-03
期刊：
影响因子：
5.3
通讯作者：
Chonghe Hu;Gong Yan;Guo Qinghua;Yifei Wang;G. Yu
中科院分区：
文献类型：
--
作者：
Chonghe Hu;Gong Yan;Guo Qinghua;Yifei Wang;G. Yu
This paper applies spectral diagnostics (SD) to study the characteristics of diesel flames in opposed burners and monitor the operation of an entrained-flow opposed multi-burner (OMB) gasifier. On the basis of a bench-scale OMB gasifier, the spectral emissions of opposed impinging diesel flames were obtained for different planes and equivalence ratios. The emission lines of OH*, CH*, C2*, Na*, Ar*, and K* radicals were found in diesel flame, and OH* was considered as a good indicator of the impinging flame height. The time-averaged and time-dependent OH* emission intensities can characterize the reaction zone and pulsation magnitude of the flame. The OH*, CH*, and C2* emission intensities of two- and four-burner impinging flames under different [O/C]e were analyzed, indicating that the strengthening effects of four-burner impinging on chemical reactions are superior to those of two-burner impinging. Moreover, whether varying the O2 velocity or diesel flow rate, the OH*/C2* intensity ratio in the impinging...
