Treatment of heat exchangers to reduce corrosion and by-product reactions
US5141049A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1990 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Aug 9, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F9/22
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The invention provides a method of extending the useful life of high temperature heat exchangers, e.g., reactor feed/effluent heat exchangers, in installations where the heat exchanger is contacted by a process fluid stream, e.g., a feedstock comprising ethylbenzene, at a temperature where the process stream may cause deterioration of contacted metal surfaces of the heat exchanger and/or undergo catalytic reaction as a result of contact with the contacted metal surfaces. The new method comprises the step of mechanically removing material from those surfaces of the heat exchanger that are to be contacted by the process fluid stream, so as to render said surfaces less susceptible to attack from said high temperature process fluid stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.