Properties of impinging flames in entrained-flow gasifier with opposed multi-burner

The key to develop the clean coal technology is how to make use of the coal efficiently and reasonably. The coal-water slurry (CWS) entrained-flow gasification technology with opposed multi-burner promotes the development of our country’s coal gasification technology. This technology may also have a vast applied foreground, and will pull the development of the equipments manufacturing in related professions consumedly. The impinging flames are the main characteristic in the entrained-flow gasifier with opposed multi-burner. So it becomes significantly to study the rules of impinging flames in the reductive atmosphere, such as the fluctuation of the flame surface. In this paper, a hot model of entrained-flow gasifier with opposed multi-burner has been built,and the flame images are picked up by the flame monitoring system. Parameters of the flame images are obtained from the image processing method. Analysis of these parameters show that the impinging surface of two burners’ impinging flame moves rapidly with the ratio of burners’ velocity. Impinging flames of four burners’ are more concentrated than two burners’; the movement of the surface also has less relation to the ratio of burners’ velocity and the loads. The impinging flame is stable if the luminous region, average brightness and centroid etc. change in a small region. The above-mentioned researches lay the theory foundation for the industry application of the entrained-flow gasifier with opposed multi-burner.