Horizontal FCC feed injection process
US6042717A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1997 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Dec 5, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J8/085
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An FCC feed injection arrangement injects feed transversely from the sides of a restricted opening into a stream of FCC catalyst to provide good feed and catalyst contacting in an arrangement that simplifies external pipe configurations and maintenance of the feed injection system. The invention forms a venturi or restricted opening by forming a generally square opening between two parallel extended chords on opposite sides of the riser. A venturi area may be built out of refractory lining or other abrasion resistant structures. The invention may use horizontally extended pipes that are tangentially positioned apart from each other across from the restricted opening to provide a simple construction for the feed injection arrangement. The pipes are easily inserted and withdrawn from the riser to permit easy maintenance of the nozzles in the highly erosive environment. Insertable pipe distributors for distributing feed may be arranged to provide good overall distribution while also providing cooling to the outer surface of the distribution conduit to prevent coking. The distribution conduit may also be arranged to provide mixing of oil and steam near the injection point of the nozzle…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.