Cracking tube having helical fins
US7799963B2 · kind B2 · utility
4Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2009 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Mar 3, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D2021/0022
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cracking tube (50) for use in thermal cracking furnaces for producing ethylene or the like has fins (1) formed on an inner surface thereof and inclined with respect to an axis of the tube for stirring a fluid inside the tube. The fins are arranged discretely on one or a plurality of helical loci, and the tube inner surface has regions (ZB) wherein no fins are present over the entire axial length of the tube from one axial end of the tube to the other axial end thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.