Method for recovering high grade process energy from a contact sulfuric acid process
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United States of America Patent
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Jul 14, 1992
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N/A
app pub date -
Mar 23, 1990
filing date -
Mar 23, 1990
priority date (Note) -
Expired
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Abstract
An improved process for the recovery of high grade energy from a contact sulfuric acid manufacturing process. Improvements include: injection of steam between an intermediate catalyst stage and a heat recovery absorption tower and/or a heat exchanger for transfer of heat from conversion gas to high pressure boiler feed water; use of a condensing economizer for recovery of the vapor phase energy of formation of sulfuric acid from a wet conversion gas; and use of heat recovery system absorption acid for preheating air to a sulfur burner, the heat transferred to the combustion air being recovered at high pressure and temperature in a waste heat boiler.
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