公开(公告)号：US3801659A

公开(公告)日：1974-04-02

申请号：US3801659D

申请日：1971-01-18

Applicant: UDDEHOLMS AB

Inventor： DAHLBERG J ,  CHRISTIANSEN V

IPC: B01J41/04 ,  C07C17/38 ,  C07C21/04

CPC classification number: B01J41/04 ,  C07C17/38

Abstract: CORROSION-PROMOTING SUBSTANCES ARE REMOVED FROM A CHLORINATED HYDROCARBON, SUCH AS TRICHLOROETHYLENE AND PERCHLOROETHYLENE BY TREATING THE CHLORINATED HYDROCARBON WITH ANANION-EXCHANGER. THE ANION-EXCHANGER IS REGENERATED BY BEING TREATED WITH A NEUTRAL OR SLIGHTLY ACID, BY BEING TREATED WITH A NEUTRAL, OR SLIGHTLY ING ANION, SUCH AS THE BICARBONATE ION, THE CHROMATE ION THE PHOSPHATE ION, THE MONOHYDROGEN PHOSPHATE ION AND THE DIHYDROGEN PHOSPHATE ION. THE REGENERATED ANION -EXCHANGER IS NOW DRIED TO A WATER CONTENT OF LESS THAN 10% BY WEIGHT, AND IS NOW READY FOR USE.

公开(公告)号：US3726775A

公开(公告)日：1973-04-10

申请号：US3726775D

申请日：1971-02-22

Applicant: UDDEHOLMS AB

Inventor： DAHLBERG J ,  MODEN A ,  OESTLUND C

IPC: B01J19/00 ,  B01J19/12 ,  C07C51/58 ,  B01J1/10

CPC classification number: B01J19/123 ,  B01J19/0013 ,  B01J2219/00103 ,  B01J2219/00108 ,  C07C51/58 ,  C07C53/48

Abstract: TRICHLOROACETYL CHLORIDE IS PRODUCED FROM PERCHLOROETHYLENE, OXYGEN AND CHLORINE IN A PHOTOCHEMICAL CHLORINE-SENSITIZED GAS PHASE OXIDATION PROCESS. A LIQUID COOLANT IS CONTINUOUSLY INTRODUCED INTO THE REACTOR IN DROP

FORM, TO ABSORB BY VAPORIZATION A CONSIDERABLE PORTION OF THE HEAT PRODUCED IN THE OXIDATION PROCESS.