Removing hydrogen sulfide from gases containing the same

摘要: In a two-stage process for the removal of hydrogen sulphide from gases, circulating aqueous suspension finely ground active carbon is contacted with gas containing in first stage, laden treated oxygen or oxygen-containing gases second stage so that becomes sulphur formed by oxidation, recycled to and when activity has declined it withdrawn circulation replaced fresh regenerated suspension. After separation suspension, may be dissolved out conventional method, example ammonium solution, sulphur-bearing burnt give dioxide. The preferably grain size 10 100 microns. contains 5 60 grams per litre also contain 0.1 4% weight an alkaline substance weakly Preferably contacting carried at temperatures 0 DEG C. room temperature, oxidation temperature up cooled after leaving before being stage. exemplified use apparatus shown, which enters top tower 1 passes countercurrent entering 5, purified mixture 9. 2 air 6 10, respectively, then 1. heated means heat-exchangers 7 8, reservoirs 4 5.