SO2 in analog flue gas was first absorbed in aqueous sodium citrate solution in an absorption column and then recovered from the loaded solution in a desorption column.

• 模拟的烟气首先在吸收塔中用柠檬酸钠溶液脱硫，然后富液在解吸塔中释放出SO2,再生的缓冲液返回吸收塔循环使用。