Our distinctive wet gas sulfuric acid recovery plants are highly energy-efficient. Simple, automated technology cleans waste gases, using thermal and catalytic conversion of sulfur-bearing compounds to produce salable, concentrated sulfuric acid.
The SULFOX™ wet gas sulfuric acid process is suitable for a wide range of applications in which wet waste gas, containing H2S, CS2 or SO2, must be desulfurized. Our expert engineers can deliver results for clients in a vast array of sulfuric acid related industries, including metallurgical, general chemical, coal-to-chemicals, natural gas processing, steel (coking), power, viscose fibers, pigments production, refining, petrochemicals and many others.
Our distinctive SULFOX™ wet gas sulfuric acid process is guaranteed to yield low acid mist emissions with zero particles injection using our proven, reliable wet electrostatic precipitator (WESP). SULFOX™ achieves high levels of SO2 conversion with a durable catalyst for wet gas service. The reliability of our process is further enhanced with our robust and low-maintenance plant equipment, including our acid condensation column featuring short horizontal tubes.
Depending on the source and composition of the feed gas, thermal oxidation with heat recovery, or gas cleaning and preheating, occurs before the sulfur-bearing gas enters the SULFOX™ converter. This converter contains catalyst beds using MECS® catalyst, where the sulfur compounds are oxidized to SO2 and SO3. The SO3 reacts with the water vapor to form gaseous sulfuric acid. The acid condenses in the condensation column, and evaporation of water produces concentrated sulfuric acid that is collected in the sump of the column. Our wet electrostatic mist precipitator (WESP) removes the remaining acid mist. A further reduction of SO2 emissions can be achieved with an additional tail gas treatment, if required, using proven MECS® DynaWave® wet gas scrubbers in some cases.