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采用新型错流式中空纤维膜吸收器,以脱盐水、氢氧化钠和亚硫酸铵水溶液作为吸收剂,考察吸收剂种类、吸收液浓度、气液比、烟气中SO_2浓度、烟气及吸收液温度等因素对膜吸收器脱硫效率的影响规律,从而提出和建立膜吸收器传质性能指标体系及其评价方法.研究结果表明,吸收液浓度、气液比、烟气中SO_2浓度是影响膜吸收器脱硫效率的关键指标,而烟气和吸收液温度影响不明显.在一定温度压力和烟气浓度条件下,选用一定浓度的亚硫酸铵水溶液作为吸收剂,用以评价膜吸收器的膜效率和脱硫性能指标是切实可行的.
A new type of cross-flow hollow fiber membrane absorber was used. Desalted water, sodium hydroxide and ammonium sulfite aqueous solution were used as absorbents. The types of absorbent, absorption liquid concentration, gas-liquid ratio, SO 2 concentration in flue gas, Liquid temperature and other factors on the desulfurization efficiency of the membrane absorber law, thus proposed and established the mass transfer performance of the membrane absorber index system and evaluation methods.The results show that the absorption liquid concentration, gas-liquid ratio, SO2 concentration in flue gas is affected Membrane absorber desulfurization efficiency of the key indicators, while the flue gas and absorption liquid temperature is not obvious.At a certain temperature and pressure and flue gas concentration conditions, the selection of a certain concentration of ammonium sulfite aqueous solution as an absorbent to evaluate the membrane absorber Membrane efficiency and desulfurization performance indicators are feasible.