Defoaming Agents

Handling heat‐stable salts in post‐combustion CO2 capture: A detailed survey

“…Previous studies identified the following factors to be responsible for foaming of alkanolamine solutions 78,79 : naturally‐occurring organic acids as constituents of inlet gases, suspended corrosion inhibiting agents, liquid hydrocarbons, surface active agents in lubricants for valves and oil for rotary equipment, injection of surplus antifoam agents, and HSSs. The most common approach to arresting foaming is the use of antifoaming agents, such as high boiling alcohols and silicone oils 80–82 …”

“…The most common approach to arresting foaming is the use of antifoaming agents, such as high boiling alcohols and silicone oils. [80][81][82] Mansooria et al investigated the foaming ability of lean MDEA solutions to determine the specific design parameters of an ion exchange resin procedure, 25 and they reported that the presence of HSS was associated with increased foaming and reduced CO 2 loading of the MDEA solutions. In their study on influence of HSSs on the absorption-desorption capacity of aqueous MEA solvent for PCC, Ling and coworkers found that foaming properties play more superior roles in the absorption rate of CO 2 in contrast to the decline of initial pH values or the declining levels of mobile amine molecules.…”