Method of suppressing the rise in surface temperature of heating tubes by ammonia injection
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United States of America Patent
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Sep 2, 1980
Grant Date -
N/A
app pub date -
Nov 9, 1978
filing date -
Nov 15, 1977
priority date (Note) -
Expired
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Abstract
According to this invention, there is provided a method of suppressing the rise in surface temperature of the heating tubes in a fractionation apparatus for a crude oil, characterized in that an aqueous solution containing ammonia or ammonium ion is injected into the upstream line of the crude heater in an amount of 1 to 20 ppm in terms of ammonia based on the crude oil.
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