Controlling System Design And Soft Measurement Of Multi-nozzle Mounted Coal Slurry Gasifier

Methanol is not only the important chemical raw material, but also clean fuel. As our country with "rich coal,poor oil,little gas",the development of producing methanol with coal, and coal is processed to fuels and using coal instead of oil will be benefit to resonably use energy. Coal-based gasification is the most important core technology and key equipment of chemical system, coal gasification technology is the most important cell technology of coal chemical industry, and the development of new coal gasification technology, which is significant to the development of coal industry and energy using.Coal-water Slurry's Gasification Technology with Opposed Multi-burner is a new type of coal gasification technology which is researched by country itself is a significant improvement to Texaco gasification technology. This thesis introduces the process and overall control requirements of multi-nozzle-mounted water slurry gasifier, describing the control of oxygen-coal ratio, safety instrument systems, lock hopper programmable system and so on.This paper focuses on soft sensor modeling method of the gasifier temperature. Analysising the work process of multi-nozzle coal-water slurry gasifier and a number of important process parameters, and selecting auxiliary variables. The BP neural network and RBF neural network method were used for modeling for the temperature measure of gasifier, and the result showed the a certain feasibility of this method.At present, opposed coal slurry gasifier has been successfully put into operation, and operation is stable, product quality and yield have reached the design target,which create a good economic benefits for company.