heat stable salts effects in a natural gas sweetening plant

Natural gas demand increasement, needs efficient gas processing methods and plants. gas sweetening is one of the main processing steps in natural gas conditioning. a gas sweetening plant, usually facing with various unwanted problems, which causes plant to operate in abnormal conditions. generation of a special kinds of salts in amine sweetening systems, called heat – stable amine salts (hsss) can affect gas sweetening plant. in this study we discussed about hss’s origin, their generation mechanism and methods used for their elimination. finally we simulate a common gas sweetening plant in aspen hysys simulator and investigate the effect of hsss presence in the plant; results show that hsss cause some inappropriate effects, like increasement in the reboiler duty and off – spec sweet gas.