Carbamate condensation method and unit for carrying out such a method
View Patent ↗Method for carbamate condensation of a carbon dioxide/ammonia gaseous phase in a liquid phase in a condensation unit of the so-called submerged type comprising a heat exchange tube bundle having a predetermined number of tubes intended for carbamate condensation, wherein the gaseous phase and the liquid phase are fed contemporaneously and independently to each of the tubes intended for condensation.
1. A method for carbamate condensation of a carbon dioxide/ammonia gaseous phase in a liquid phase in a condensation unit of the so-called submerged type comprising a heat exchange tube bundle having a plurality of tubes, the method comprising the step of:
feeding, contemporaneously and independently, said gaseous phase and said liquid phase to a predetermined number of tubes within the tube bundle that are intended for condensation.
2. Method according to claim 1 , further comprising the steps of:
feeding said gaseous phase to a gas distribution chamber arranged within said condensation unit below said tube bundle;
collecting said gaseous phase in said gas distribution chamber; and
feeding said gaseous phase within said tubes intended for carbamate condensation through a plurality of connecting ducts extending from said gas distribution chamber to said tubes intended for carbamate condensation.
3. Method according to claim 1 , wherein it comprises the steps of:
feeding said gaseous phase to a gas distribution chamber arranged within said condensation unit below said tube bundle;
collecting said gaseous phase in said gas distribution chamber and feeding said gaseous phase to a further gas distribution chamber above thereto; collecting said gaseous phase in said further gas distribution chamber and feeding said gaseous phase within said tubes intended for carbamate condensation through a plurality of connecting ducts extending from said further gas distribution chamber to said tubes intended for carbamate condensation.
4. Method according to claim 2 , wherein it comprises the step of:
feeding said liquid phase within said tubes intended for carbamate condensation through annular spaces defined between said tubes intended for condensation and said connecting ducts.