The dry pulverized coal fluidized bed gasification technology has been widely promoted and applied in the world.From the perspective of the structure and characteristics of the combined burner,slag outlet,and gasifier itself of dry pulverized coal gasifier,the influences on gasification efficiency are explored from the oxygen rotation angle of the main burner,the coal powder channel radius of the main burner,and the size of the gasifier slag outlet.A good matching selection is found as follows:a main burner with oxygen rotation angle of 25°,a pulverized coal channel radius of 92 mm and a slag outlet with an inner diameter of 500 mm.Under this matching scheme,the content of effective gas reaches the highest,the carbon conversion rate is the highest,the carbon content in slag and cake is the lowest,and gasification reaction conducts more adequate.
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