METHODS OF REMOVING POLLUTANTS FROM OUTLET FLOW OF DEHYDRATION Russian patent published in 2018 - IPC B01D53/02 

FIELD: technological processes.

SUBSTANCE: method for obtaining regenerating gas stream for a regenerable adsorbent used to remove water and hydrogen sulfide from reactor flow during catalytic dehydrogenation is proposed. Outlet reactor flow is squeezed in compressor to produce compressed outlet flow. Compressed outlet flow can be treated to remove chlorides, and then passed into dehydrating zone containing regenerable adsorbent. Regenerating gas stream is used to desorb water and hydrogen sulfide, and treated regenerating agent stream can be passed to purification zone containing sorbent, obtained with the possibility of removing hydrogen sulfide from the stream of treated regenerating agent. Purified regenerating gas stream can be returned to dehumidifier zone for desorption treatment and / or regeneration of regenerable adsorbent.

EFFECT: invention makes it possible to improve performance characteristics for drying, to increase efficiency of processing of treated regenerated gas, in which doesn’t use caustic solution or solid granules of base salt, which does not require sulfur recovery unit, and also to solve environmental problem by using proposed adsorbent.

10 cl