Decoke enhancers for transfer line exchangers
US6772771B2 · kind B2 · utility
5Cited by
15References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Feb 4, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G9/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a steam cracking operation the formation of coke is a problem which needs to be overcome. While significant work has been done on decoking of furnaces little work has been done regarding transfer line exchangers. Coking of transfer line exchangers (TLE) may be reduced by injection of a solution containing at least one group 1 or 2 metal dichromate or dichromate and one or more of a group 1, 2 or 7 metal carbonate into the TLE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.