Advanced intercooling and recycling in CO

1. A process of removal of acidic gases from a gas stream, comprising the steps of

a) contacting a wash solution stream with said gas stream containing acidic gases to be removed to allow absorption of the acidic gases into the wash solution stream;

b) withdrawing wash solution enriched with acidic gases from said wash solution stream at a first withdrawal level;

c) cooling said withdrawn wash solution; and

d) reintroducing said cooled wash solution to the wash solution stream at a first reintroduction level to form a mixed wash solution stream, said first reintroduction level being upstream of said first withdrawal level;

the process further comprising the steps of:

b1) withdrawing wash solution enriched with acidic gases from said wash solution stream at a second withdrawal level;

c1) cooling said withdrawn wash solution stream; and

d1) reintroducing said second cooled wash solution to said wash solution stream at a second reintroduction level corresponding to said second withdrawal level; and

wherein said second reintroduction level in step d1) corresponds to said first reintroduction level in step d).

2. A process according to claim 1 , wherein in step b) a ratio of withdrawn wash solution is 10-90% of the total wash solution stream.

3. A process according to claim 1 , wherein in step b1) the ratio of withdrawn wash solution is selected from 100% of said wash solution stream and 30-70% of said wash solution stream.

4. A process according to claim 1 , wherein said second withdrawal level in step b1) corresponds to said first withdrawal level in step b).

5. A process according to claim 4 , wherein the a ratio of wash solution being reintroduced at the second reintroduction level said is 10-90% of the wash solution withdrawn in step b) and b1).

6. A process according to claim 1 , wherein said wash solution is cooled to a temperature of 20-70° C.

7. A process according to claim 1 , wherein said acidic gases are selected from the group consisting of CO 2 and H 2 S.

8. A process according to claim 1 , wherein said wash solution stream comprises an amine compound.

9. A process according to claim 1 , wherein said removal takes place in an absorption unit.

10. A process according to claim 1 , wherein step a) is performed in a counter current flow mode.

11. A process according to claim 1 wherein in step b) a ratio of withdrawn wash solution is 30-70% of the total wash solution stream.

12. A process according to claim 4 , wherein the a ratio of wash solution being reintroduced at the second reintroduction level said is 30-70% of the wash solution withdrawn in step b) and b1).

13. A process according to claim 1 , wherein said wash solution is cooled to a temperature of 35-50° C.