ACID GAS RECOVERY SYSTEM AND ACID GAS RECOVERY APPARATUS

摘要

An abstract The present invention provides an acid gas recovery system and apparatus which can effectively use an amine solution in which an acid gas is to be absorbed. The acid gas recovery system of an embodiment brings an untreated acid gas mixture of at least one kind of weakly acidic gas and at least one or more kinds of strong acidic gas into contact with an amine solution and recovers the weakly acidic gas. In order to realize this constitution, the acid gas recovery system includes a first process which contacting a first amine solution into the untreated acid gas mixture containing the strong acidic gas, and absorbing the strong acidic gas in the first amine solution and a second process which contacting a second amine solution into the acidic gas mixture after the first process, and absorbing the weakly acidic gas in the second amine solution. )k 20 10, 12 -13 Fig. 1