E F F Y I C G I R E E N N T E Nelson Clark, Breno Avancini and Vitor Sturm, Clark Solutions, Brazil, examine a new technology designed to safely cool strong sulfuric acid and reduce heat loss.
SULFURIC Acid Cooling S
ulfuric acid plants must utilise acid cooling and energy recovery effectively. Strong acid cooling, paired with energy recovery, is not yet a widely accepted practice, though interest has been growing since the 1980s. There have been some proven technologies employed, but the associated risks – hydrogen corrosion, heat generation or high temperatures – have
limited their acceptance and spread. To eliminate these risks, Clark Solutions has developed the SAFEHR® heat recovery system for use in 150 tpd acid plants; it can replace conventional heat exchanger systems, providing protection against corrosion and hydrogen incidents while recovering energy. The system has been supplied to a new plant being constructed that will process 3200 tpd. 57
