A lab-scale study of opposed multi-burner Entrained-flow gasifier
Coal gasification offers one of the most versatile and clean ways to convert coal into electricity, hydrogen, and other valuable chemical products. Recently, a new coal gasification technology,Opposed Multi-Burner (OMB) entrained-flow gasification, has been developed by ECUST in China.This experimental study concerns gasification combustion characteristics of the OMB gasifier. The four burners were symmetrically mounted on the upper part of gasifier. The oxygen and diesel oil were respectively used as oxidant and gasifying agent. The gasifier was operated at about 1600 ℃. The characteristics of impinging flame, include in ratio of luminous area(La), average brightness(Bave),centroid and impinging plane location, was obtained by digital image processing. Using thermocouple in association with mass spectrometry reveals the distribution of axis temperature and syngas composition in OMB gasifier. The result of this study shows that the movement of two burners impinging plane is only related with the ratio of two burners velocity(U1/U2), the transfer of the impinging plane has less relation to single burners velocity. Impinging flames of four burners are more concentrated than two burners in OMB gasifier. The stable of impinging flame indicates the slight change of luminous area,average brightness and centroid. The maximal temperature located in the plane of burner mounted, along the gasifier axis the temperature decrease gradually, The CO2 and CO content of syngas is maximum in burner-mounted plane, but H2 content is minimum. The above-mentioned investigation was affluent in the theory foundation for OMB entrained-flow gasification, which has been proved by the excellent industrial operating results in two demonstration plants of the OMB gasification.
OMB gasifier impinging flame temperature syngas
Qin Feng Liang Hai Feng Liu Fu Chen Wang Xin Gong Zun Hong Yu Guang Suo Yu Xiao Lei Guo Wei Feng Li Xing Jun Wang Zheng Hua Dai Zhi Jie Zhou Xue Li Chen Yi Fei Wang
Institute of Clean Coal Technology, East China University of Science and Technology(ECUST), 200237 Shanghai, China
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）