Treatment of heat exchangers to reduce corrosion and by-product

Details Treatment of heat exchangers to reduce corrosion and by-product Treatment of heat exchangers to reduce corrosion and by-product

1990-08-09

1992-08-25

Flanigan, Allen J.

Heat exchange

With coated, roughened or polished surface

165158, F28F 1900

Patent

active

051410494

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.

REFERENCES:
patent: 3739710 (1973-06-01), Costa et al.
patent: 4081193 (1978-04-01), Salminen
patent: 4436146 (1984-03-01), Smolarek

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