Improvement and application of coal water slurry gasification process burner nozzle and firebrick ablation
The design of the process burner in coal water slurry pressurized gasification process needs to match the coal slurry feeding load.The original designed treatment capacity of the process burner in a 6.5 MPa coal water slurry pressurized gasification plant was 73 m3/h.Due to changes in downstream syngas demand,the load of the plant needed to be significantly changed,and in the new solution,the burner needed to meet the 75%-125%load adjustment ratio.In order to evaluate the impact of the extreme load condition on the gasification plant,the numerical simulation of the whole furnace combustion was carried out for both old and new burners under the operation conditions.The calculation results showed that the new design optimized the burner outer tip ablation at low load and erosion problem at high load,improved the temperature distribution of the firebrick cylinder and the cone bottom under high load,and reduced the erosion rate of the firebrick.The new solution worked well after it was put into use,taking into account the high gasification efficiency and a wide range of load changes,which verified the correctness of the calculation.
coal water slurry pressurized gasificationprocess burnerload changenumerical simulationfirebrick
NETL
NSTL
万方数据
维普
