Catalyst regeneration process
US4406775A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1982 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Feb 1, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G35/085
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for regenerating, and reactivating, coked noble metal catalysts, especially platinum-containing polymetallic catalysts in a system which includes separate, interconnected primary and secondary regeneration gas circuits in which gas is circulated from one circuit to the other, (i) a primary regeneration gas circuit which contain a preheat gas furnace, a reactor which contains said catalyst from which said coke can be burned by contact with hot gas from said preheat gas furnace, and a steam boiler through which said hot gas can be passed and cooled, and the cool gas injected, or returned to said secondary circuit; and (ii) the secondary circuit is one which contains a regeneration gas scrubber, a gas drier (optional) and fines solids filter. The circuit also includes regeneration gas means, i.e. a compressor, for circulating the gas in said circuits. A gas, constituted in major part of flue gas, is passed through the preheat gas furnace, preheated, then passed into the coked catalyst-containing reactor wherein the coke is combusted by contact of a combustible mixture of the gas with the catalyst, the gas heated thereby, then cooled by passage through the steam boiler, and t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.