Research Progress and Prospect of Numerical Simulation and Engineering Application of Sludge Mixing in Boiler Units of Coal-Fired Power Plants
With the rapid development of China's economy and the accelerating progress of urbanization,the sludge output is also increasing day by day.The mixed combustion of sludge in boiler units of coal-fired power plants can quickly reduce the amount and achieve harmless treatment.At present,it is a sludge treatment method with broad application prospects.The author summarizes the research status of numerical simulation based on the mixed combustion of sludge in coal-fired boiler units,and finds that in the current numerical simulation research,EDM transport model should be used to simulate gas-phase turbulent combustion for sludge with high moisture content,so as to further improve the simulation accuracy;The existing numerical simulation generally adopts the coke combustion model without considering the ash layer resistance,resulting in a certain error between the simulation results of carbon content in fly ash and engineering practice.Further accurate research on the mixing ratio of coal-fired boiler sludge based on the improved coke combustion model is an important research direction in the future;In view of the problems brought by sludge mixed combustion to coal-fired boilers,it is also a hot research direction in the future to carry out combustion adjustment numerical simulation to optimize the combustion conditions in the furnace after sludge mixing.
sludge mixed combustioncoal fired power plantnumerical simulationcombustion characteristiccombustion adjustment
万方数据
维普
