Why doesn’t the absorption rate increase when carbon removal is added to the activator in the hot potassium alkali method?
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I have been conducting experiments on gas decarburization recently. The absorption unit uses a packed tower for adsorption at normal temperature and pressure; the gas used is pure CO2, while the absorbent is an aqueous solution of potassium carbonate. By measuring the flow rate of the incoming gas and the flow rate of the gas exiting the system, the absorption rate can be calculated. When only an aqueous solution of potassium carbonate was used, the CO2 absorption rate was not high. After adding a certain amount of activator, the absorption rate increased only slightly. According to literature, activators can significantly enhance the absorption rate – so why did my absorption rate show little change after adding the activator? Is it because the operating conditions are at normal temperature and pressure?
The absorption operation temperature in industry is between 70 and 100 degrees. It’s very likely this is the reason