Method for recovering high grade process energy from a contact s

Details Method for recovering high grade process energy from a contact s Method for recovering high grade process energy from a contact s

1990-03-23

1992-07-14

Lewis, Michael

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423530, 423541R, 423541A, C01B 1774

Patent

active

051301121

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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Olsen, Unit Processes and Principles of Chemical Engineering, D. Van Nostrand Co., Inc. 1932, pp. 1-3.
Boyer et al., Metals Handbook Desk Edition, American Society for Metals, 1985, p. 15.2

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