Selection and Application of Coal Gasification Technologies between Undok Gasifier and Two-stage Gasifier

Through analysis and comparison of coal gasification technologies between Undok gasifier and two-stage gasifier,the different gasification modes of two kinds of gasifiers were described.Because both gasification methods and gasification principles of these two kinds of technologies are different, they differ in the aspects of gasification condition,gasification process,gasification product and gas application.Undok pulverized coal gasification technology is characterized by wider coal application range,big production capacity for single oven,lower production cost for gas,this technology is future development tendency of coal gasification technology.