浸没燃烧式气化器烟气分布器多目标性能优化

The simulation calculation of the flue gas distributor of the submerged combustion vaporizer shows that the mass flow in the flue gas distributor branch pipe located in the middle section is lower due to the influence of the velocity field and the temperature field, and the mass flow in the gas distributor branch pipe at the head and end is relatively high. The uneven mass flow in each branch tube is likely to form a flow dead zone, which affects the heat transfer performance of the fluid and the water area.In this regard, a flue gas distributor structure with variable branch pipe diameter is proposed.Based on the multi-objective genetic algorithm, the structural parameters of the flue gas distributor are optimized, so that the mass flows of each branch pipetend to be equaland cannot affect the flow performance. According to the sensitivity analysis, the optimization target is more sensitive to the structural parameters of the branch pipe at the end. The standard deviation of the optimizedgas distributor is 10.56% higher than the traditional structure, and the pressure drop is reduced by 6.17% on average.