Pressure drop and hydrodynamic characteristics of cyclone scrubber
The cyclone scrubber has a relatively simple structure and high dust removal efficiency.It is a reliable equipment for purifying the raw gas produced by underground coal gasification.The pressure drop and corresponding hydrodynamic characteristics of the cyclone scrubber were studied through the combination of experiments and CFD numerical simulation.The pressure drop of cyclone scrubber under the conditions of single gas phase and gas-liquid two-phase flow was measured experimentally.The influence of gas flow rate,liquid-gas ratio(volume ratio)and nozzle spray position on the pressure drop of equipment was investigated,and the hydrodynamic characteristics in the cyclone scrubber were determined based on the verified numerical model.The results show that the pressure drop of cyclone scrubber increases significantly with the increase of gas flow rate,and the effect of spraying scrubbing liquid and changing spraying position on the pressure drop of equipment is small under the current spraying amount of scrubbing liquid.The current equipment structure can effectively realize cyclone dust removal and spray dust removal,but the flow field above the swirl plate for mist droplet removal can be further optimized to effectively remove the liquid droplets entrained by the air flow.
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