METHOD OF RECUPERATION OF HEAT Russian patent published in 2007 - IPC C07D301/04 C07D301/32 

FIELD: updated methods of recuperation of heat in CO₂ discharge systems in production of ethylene oxide.

SUBSTANCE: proposed method includes absorption of ethylene oxide from circulating gas flow by washing the gas in scrubber. Washed flow of circulating gas is brought in contact with hot absorbing carbonate solution for absorption of CO₂ and flow of circulating gas after absorption of CO₂ returning it to ethylene oxide production cycle; proposed method includes also bringing the said washed circulating gas flow in contact with heated liquid after removal of ethylene oxide at first contact stage, transferring the preheated circulating gas to stage of absorption by hot carbonate for removal of CO₂, cooling the said circulating gas from stage of absorption by carbonate and removal of carbonate from it by bringing it in contact with said liquid from first contact stage at second contact stage after cooling this liquid, transferring the liquid from second contact stage to first contact stage and transferring the cooled circulating gas from second contact stage to reaction system for obtaining the ethylene oxide.

EFFECT: enhanced operational and economical efficiency of heat recuperation.

1 dwg, 1 ex