Exothermic two-stage process for catalytic oxidation of hydrogen chloride
US5639436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1995 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Sep 21, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B7/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process of recovering chlorine from a stream of hydrogen chloride comprising the steps of exothermically reacting a stream of hydrogen chloride and oxygen with a fluidized bed of a carrier catalyst containing cupric oxide and cupric chloride in a reaction zone within a chlorinator reactor at temperatures between 150.degree. and 220.degree. C. to convert part of the cupric oxide to cupric chloride and cupric hydroxychloride, thereby essentially eliminating the hydrogen chloride to produce a product stream including chlorine, residual oxygen, inerts and water, which is removed from the chlorinator reactor; passing the resulting carrier catalyst containing cupric chloride, cupric hydroxychloride, and residual cupric oxide from the chlorinator reactor to the combination oxidation reactor to form a bed which is operated at temperatures between 300.degree. and 400.degree. C., wherein the combination oxidation reactor is supplied with a stream a hydrogen chloride and oxygen to fluidized the bed, and for exothermic reaction with cupric chloride and cupric hydroxychloride to produce cupric oxide which is returned to the chlorinator reactor; supplying the overhead stream of chlorine, unrea…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.