Minimizing coking problems in tubular process furnaces
US5283049A · kind A · utility
7Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1992 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Jun 18, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G9/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A closed tube extension or deadleg is included below the vertical tube of a hydrocarbon pyrolysis furnace. The deadleg passively collects spall coke particles to avoid plugging of the tube or its hydrocarbon inlet. Inspection or cleaning devices can be inserted through the deadleg into the tube and blocked tubes can be cleared. Pressurized steam and/or air can be injected through the deadleg to accelerate decoking of individual tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.