B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/341, 23/360
B01D 53/00 (2006.01) B01D 53/14 (2006.01)
Patent
CA 1068473
ABSTRACT OF THE DISCLOSURE A process for eliminating and recovering gaseous acid impurities from a gaseous mixture containing them, comprising an absorbing step, wherein said gaseous mixture is brought into contact with an alkaline absorbing solution and a regeneration step wherein the exhausted absorbing solution is regenerated by steam stripping, said absorption step comprising, a main column operating at a higher pressure and by means of a supply of outside heat; and a secondary column operating at a lower pressure and substantially by means of the stream obtained by expansion of the solution regenerated in the main column, and wherein the pressure of the main column is controlled in such a way as to recover the excess of steam issuing therefrom. The said exhausted solution to be regenerated is conveyed, substantially in its totality, firstly in one of the two aforesaid regeneration columns wherein it is regenerated in an incomplete way, and subsequently into the other column where it s regeneration is completed. Such a process affords an improvement of the regeneration degree and a reduction of the heat consumption.
240463
Giammarco Giuseppe
Giammarco Paolo
Giammarco Giuseppe
Giammarco Paolo
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