| The synergistic removal technology of flue gas pollutants can remove the fine particles in the flue gas and remove the harmful gas.It can be used to control the pollutants of coal-fired flue gas,and is easy to realize the integration of dust and desulphurization for China's national conditions.In this paper,based on wet dust removal and desulphurization technology,a mathematical model of contaminant removal was established,and the simulation analysis and experimental study were carried out on the system of ceramic membrane water film flue gas pollutant synergistic removal.The effects of flue gas flow rate,temperature,water film flow rate,particle concentration and arrangement of ceramic tubes on the removal efficiency of fine particulate matter were analyzed.When the other variables are controlled,the removal efficiency of fine particles decreases with the increase of flue gas flow rate,increases with temperature,and increases with the increase of fine particulate matter concentration,Area increases.With the increase of water infiltration,the removal efficiency of fine particles first increased and then decreased.The water film array layout,can greatly improve the removal efficiency,and the removal efficiency of water film is higher with the same number of water film and stagger column arrangement.A desulfurization performance test bench was designed and built,and the experimental research on the ceramic membrane water film pollutant co-removal system was carried out.Under the experimental conditions,the removal efficiency of SO2 decreases with the increase of flue gas flow rate,decreases with the increase of flue gas temperature,decreases with the increase of SO2 concentration in flue gas and increases with the increase of ceramic tube length.Therefore,the experimental device is suitable for SO2 removal of low-temperature,low-flow and low-concentration flue gas.Meanwhile,the removal efficiency of SO2 in flue gas can be improved by increasing the flux of water infiltration,increasing the flow length of flue gas and arranging multi-row and multi-row ceramic tube to form water film array.The simulation and experiments show that the device is suitable for the removal of flue gas pollutants with low flow and low SO2 concentration and high concentration of fine particulate matter.By increasing the water infiltration flux,increasing the contact area between the flue gas and water film and arranging the multi-row ceramic tube to form the water film array stagger arrangement and reducing the water film spacing can effectively improve the flue gas pollutants synergistic removal efficiency. |
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