| Abstract |
A process to improve the performances and reduce the effects of corrosion in vapor stripping condensations in urea plants, through the use of a condensations in urea plants, through the use of a carbamate condenser with kettle type tube sheet. Characteristically in the zone facing the pipe inlet of said condenser, the condensation of a notable portion of stripping vapors takes place. The devices used to put said [process into operation comprise in the zone facing the tube sheet of the carbamate condenser: a) a feed opening containing at least: a) a return pipe of the condensed carbamate solution, a2) an ejector for the mixing of the recycle liquid with the solution rich in water coming from the outside of said feed opening and a a3) an outlet for the condensed fluid flowing toward the reactor, being the nozzle of said return pipe positioned in the periphery of the tube sheets discharge zone; b) at least a conduct for the stripping vapors internally or externally crossing the condenser and having the outlet at the periphery of the inflow of the sheet. |