If we talk about something called as acid processing, then most of us might be unknown about what it actually means. In fact, wet sulfuric acid process is one of the key gas desulfurization processes in the present time market. This technology was introduced and patented in 1980's by Haldor Topsoe.
This process has eventually been recognized as an efficient process for recovering sulfur from various processes, in the form of commercial quality sulfuric acid; with simultaneous production of high pressure steam. This wet sulfuric acid process is especially suited for processing one or more sulfur containing streams like off-gas from Sour Water Stripper, off gas from rectisol, spent acid from alkylation. Further, it also included calus process tail gas, heavy residue or pet coke fired utility boiler off gas, boiler flue gases from various processes, metallurgical process gas and production of sulfuric acid.
Wet sulfuric acid process has several industrial applications for which, it's used widely in various plants like; refinery and petro chemical industry, metallurgy industry, coal based industry (coking and gasification), power industry, vircose industry, sulfuric acid industry. It's also used for gasifiers. This wet sulfuric acid process
excess moisture when it comes into contact with the catalyst. The sulfur trioxide formed by catalytic oxidation to the sulfur dioxide reacts instantly with the moisture to produce sulfuric acid in the vapor phase to an extent determined by the temperature. Liquid acid is subsequently formed by condensation of the sulfuric acid vapor and not actually by absorption of the sulfur trioxide in concentrated sulfuric acid, as is the case in contact processes based on dry gases.
