Catalyst withdrawal apparatus and method for regulating catalyst inventory in a unit
US8092756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2009 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Feb 6, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2265/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Catalyst withdrawal apparatuses and methods for regulating catalyst inventory in one or more units are provided. In one embodiment, a catalyst withdrawal apparatus for removing catalyst from a FCC unit includes a vessel coupled to a flow control circuit. Another embodiment of a catalyst withdrawal apparatus includes a vessel, a delivery line, and control valve. The control valve is configured to control the amount of gas to the delivery line and entrained with the catalyst. Another embodiment of catalyst withdrawal apparatus includes a vessel coupled to a heat exchanger. The heat exchanger includes a first conduit; a housing confining a coolant volume around a portion of the first conduit; and a sliding seal sealing the housing to the first conduit in manner that allows longitudinal expansion. A fluid catalyst cracking system coupled to a catalyst withdrawal apparatus and method for withdrawing catalyst from a unit are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.