Natural gas streams contain significant amounts of sulfur compounds in the form of hydrogen sulfide gas and mercaptans. It is necessary to separate these compounds before all kinds of processes and before releasing them into the environment for process and environmental reasons. The flow of sour gas (gas containing sulfur) is placed in contact with the catalyst while passing through the absorbent tower containing the catalyst at a certain temperature and pressure, and the sulfur content in the gas is stabilized on the adsorption sites of the catalyst and separated from the gas.