Molten Sulfuric Burner
The burning of sulfur in the air to make sulfuric acid from the resulting sulfur dioxide is an old process. Controlling the combustion at a uniform burning rate and a constant gas strength is highly desirable. The key to uniform, high-quality acid product and lower production costs is the burning equipment.
Sulfur is preheated and then delivered to the burner as a liquid at a maintained temperature of 270° F. The Preferred atomizer breaks this liquid into microscopic droplets which burn in suspension in a refractory lined furnace. Aside from a controlled supply of clean dry air, combustion is entirely self-supporting; no supplementary fuel is required. The process generates an appreciable amount of heat which in turn is recovered by passing the hot gas through a waste heat boiler to supply plant steam.
- Larger orifices in the nozzle decrease susceptibility to clogging
- Does not require steam keeping moisture out of the furnace and reducing the possibility of sulfuric acid formation on the heat transfer surfaces
- Compact flame which permits reductions in furnace size with resultant savings in both initial cost and in furnace maintenance expense