Atomized polysulfide used in ethylene steam cracker
US7154016B2 · kind B2 · utility
4Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2002 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Nov 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/95
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Dialkyl polysulfides can be added to hydrocarbon gas fed streams for alkene steam crackers for the petrochemical industry. The polysulfides act as sulfiding agents for surfaces of the steam crackers and thereby reduce coking and CO generation. A preferred polysulfide is a di-t-butyl polysulfide. Such compounds tend to have lower vapor pressure, reasonable viscosities, and are relatively nonflammable as compared to the lower molecular weight sulfur containing compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.