Method to vapor-phase deliver heater antifoulants
US5863416A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1996 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Oct 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/95
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is a method of preventing fouling and coke formation on the high temperature sections of hydrocarbon processing equipment which comes into contact with a hydrocarbon fluid. The method comprises adding to a carrier prior to the carrier coming into contact with the high temperature sections of such equipment, an effective amount of an antifoulant in its vapor phase selected from the group consisting of tri-tertiary-butylphenol phosphate esters and compounds having the formula I: ##STR1## wherein Q is Z, or R with the proviso that two occurrences of Q are Z, R is hydrogen, or a straight or branched alkyl group having from 1 to 7 carbon atoms, and only one or two occurrences of R may be alkyl. Z is represented by the formula II: ##STR2## wherein R.sub.2 and R.sub.3 are the same as R and only one or two occurrences of each of R.sub.2 and R.sub.3 may be alkyl, and "n" is a whole number of from 1 to 9, and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.