Reactor having bellows expansion unit between catalyst addition/withdrawal conduit and grid plate
US6235246A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1998 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Jan 5, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J8/1818
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pressurized vertically-oriented catalytic reactor vessel has a fluid flow distribution grid plate fixedly mounted transversely in the reactor lower portion for supporting a bed of particulate catalyst above the grid plate, and has at least one elongated conduit for catalyst addition/withdrawal extending upwardly through the reactor lower head and the grid plate. The catalyst addition/withdrawal conduit has a concentric bellows type expansion unit sealably attached at its lower end to the upper side of the grid plate, the bellows unit being sealably attached at its upper end to the catalyst conduit, so that the conduit can thermally expand vertically, and gas leakage cannot occur around the conduit and the grid plate into the catalyst bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.