| 摘要 |
<p>A carbamate condensation unit (1) of the submerged type for synthesis urea production plants comprising a tube bundle (5) for the condensation of gaseous compounds, is distinguished in that it further comprises a duct (19,23) structurally independent from the tube bundle (5), for the circulation of part of the condensed gaseous compounds inside the condensation unit (1). <IMAGE></p> |
