Category Archives: Chemical Solvents

The hot potassium carbonate (K2CO3) process uses hot potassium carbonate to remove both CO2 and H2S. It works best on a gas with CO2 partial pressures in the range of 30-90 psi. The main reactions involved in this process are: It can be seen from Equation 7-12 that H2S alone cannot be removed unless there… Read More »

Diisopropanolamine (DIPA) is a secondary amine used in the Shell ADIP process to sweeten natural gas. DIPA systems are similar to MEA systems but offer the following advantages: carbonyl sulfide (COS) can be removed and regenerated easily and the system is generally noncorrosive and requires less heat input. One feature of this process is that… Read More »