The accumulation of heat stable salts(HSS)in amine liquid during CO2 capture cycle will lead to an increase in amine liquid consumption and a decrease in CO2 capture efficiency

it also causes serious corrosions.Thus

a combined process was developed

including removal of HSS anion by anion exchange resin.The resin with the optimal performances was selected through static absorption and static mechanical property tests for eight types of macroporous resins.Moreover

by dynamic absorbing tests

the best conditions for anion exchange resin absorbing and desorbing heat stable salts in organic amine liquid used for flue gas decarbonization were ascertained.For the chosen No.6resin

the most appropriate adsorption and desorption conditions are:amine liquid's flow rate of 1.5BV/h

inlet sample volume of 2BV

using NaOH solution with mass fraction of 5.0%

dosage of 3BVand flow rate of 1.5BV/h as the regeneration agent for desorption.The results show this method can regenerate the deteriorated amine liquid and the removal rate of the HSS can reach up to 95%.