METHOD FOR ISOLATING HYDROGEN SULPHIDE FROM COKE-OVEN GAS WITH THE SUBSEQUENT RECOVERY OF ELEMENTAL SULPHUR IN A CLAUS PLANT

摘要

The present invention Claus plant (claus plant) recovered after the reaction in the elemental sulfur coke oven (coke oven) to a method for separating hydrogen sulfide from a gas. Hydrogen sulfide is removed from the absorption liquid by using the coke oven gas through the gas cleaning process. While the absorption liquid is played, the hydrogen sulfide is accumulated in the concentrated form, it is supplied to the Claus plant. The plant is composed by Klaus Klaus boilers, waste heat boiler as well as the reactor has an additional catalytic steps. According to the invention, the Claus plant is operated as a single reactor at a temperature of less than 250 . The process gas in the reactor is sent to the coke oven before they purification the gas cleaning process together with the remaining hydrogen sulfide concentrate unreacted after the precipitation with elemental sulfur.