FIELD: chemistry.
SUBSTANCE: invention relates to a method of removing hydrogen sulphide from decomposition gases from an apparatus for atmospheric-vacuum or vacuum distillation of oil, which includes burning decomposition gases, formed from heating mazut, in a furnace. Decomposition gases from a multi-step steam ejector-type vacuum generating system after the condenser of a cooler and (or) a first ejection step and (or) other ejection steps are fed into a barometric container and then into an absorber, into which, in order to spray contact devices, a regenerated absorbent is fed, wherein the pressure maintained in the absorber is equal to 1.01-1.05 kgf/cm2, after absorption the saturated absorbent with hydrogen sulphide content of 0.1-5.0 wt % is removed from the absorber for regeneration, which is carried out either within the apparatus or on refining apparatus or apparatus for removing impurities of straight distillates or other products, the cleaned decomposition gases from the absorber are fed for burning into a mazut heating furnace before a vacuum column.
EFFECT: removing hydrogen sulphide from decomposition gases.
3 cl, 4 dwg, 2 tbl
