Non-polluting oxyhydrochlorination process
US4255359A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Apr 9, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/156
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A non-polluting oxyhydrochlorination process is provided in which the residual gaseous effluents are purified by catalytic oxidation in the presence of a catalyst comprising platinum and/or iridium deposited on a special alumina support of eta crystallographic structure and then washing the effluent before being discharged into the atmosphere. The process of the invention is particularly applicable to a residual effluent containing essentially carbon monoxide, carbon dioxide, ethylene, 1,2-dichloroethane, and at least one chlorinated hydrocarbon from among the group consisting of chloroform, carbon tetrachloride, ethyl chloride, 1,1-dichloroethane, 1,1,1- and 1,1,]-trichloroethanes, 1,1,2,2- and 1,1,1,2- tetrachloroethanes, vinyl chloride, 1,1- and 1,2-dichloroethylenes, trichloroethylene, perchloroethylene and chloral.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.