Carbamate condensation method and unit for carrying out such a method
AssigneeUrea Casale S.A.
InventorLorenzo Pennino
Life of this patent
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Abstract
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.
Claims12
A carbamate condensation unit of the submerged type for carbamate condensation of a carbon dioxide/ammonia gaseous phase in a liquid phase, comprising:
- a heat exchange tube bundle having a predetermined number of first tubes intended for carbamate condensation at their interior and a predetermined number of second tubes intended for circulation of said liquid phase inside said condensation unit from an upper portion of the condensation unit to a lower portion of the condensation unit;
- a gas distribution chamber for collecting said gas phase fed to said condensation unit;
- and
- a plurality of connecting ducts extending from said gas distribution chamber to the interior of said first tubes intended for condensation, so as to obtain a direct gas communication between said chamber and said first tubes.
The carbamate condensation unit of the submerged type for carbamate condensation of a carbon dioxide/ammonia gaseous phase in a liquid phase, comprising:
- a heat exchange tube bundle having a predetermined number of tubes intended for carbamate condensation at their interior a gas distribution chamber for collecting said gas phase fed to said condensation unit arranged below said tube bundle;
- a further gas distribution chamber arranged between said gas distribution chamber and said tube bundle for collecting said gas phase coming from said gas distribution chamber;
- and
- a plurality of connecting ducts extending from said further gas distribution chamber to the interior said tubes intended for condensation, so as to obtain a direct gas communication between said further chamber and said tubes.
Dependencies are inferred from the claim text.