| (19) |
 |
|
(11) |
EP 0 643 123 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
23.08.1995 Bulletin 1995/34 |
| (43) |
Date of publication A2: |
|
15.03.1995 Bulletin 1995/11 |
| (22) |
Date of filing: 21.11.1994 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
| (71) |
Applicant: THE DOW CHEMICAL COMPANY |
|
Midland,
Michigan 48640 (US) |
|
| (72) |
Inventors: |
|
- Dreher, Eberhard L.
Stade 21682 (DE)
- Pereira, Celio Lume
Stade (DE)
- Böeheimer, Barbara
Stade 21682 (DE)
|
| (74) |
Representative: Burford, Anthony Frederick |
|
W.H. Beck, Greener & Co.
7 Stone Buildings
Lincoln's Inn
London WC2A 3SZ
London WC2A 3SZ (GB) |
|
| |
|
| (54) |
Process for the treatment of halogenated hydrocarbons |
(57) Halogenated organic waste streams (1) are treated by catalytic halogenation (2) in
admixture with a hydrogen-rich, gaseous recycle stream (7) and a recycle stream (14)
containing unreacted halogenated organic compounds. The resultant effluent (3) is
condensed (4) and separated (6) to produce said gaseous recycle stream (7) and a liquid
stream (8) containing hydrogenated hydrocarbonaceous compounds and hydrogen halide.
Said liquid stream (8) is separated (9) into an anhydrous product stream (10) containing
hydrogen halide and a stream (11) containing hydrogenated hydrocarbonaceous compounds
and unreacted halogenated organic compounds. Said stream (11) is separated (12) into
a product stream (13) comprising hydrogenated hydrocarbonaceous compounds and the
recycle stream (14) containing unreacted halogenated organic compounds.