| 摘要 |
<p>In a process for the production of urea, substantially pure ammonia and carbon dioxide are reacted in a reaction space (19) from which comes out a reaction mixture subjected to stripping (21) to obtain a partially purified mixture sent to a urea recovery section. From the recovery section it is obtained a dilute carbamate solution, which is subjected to stripping (22) with recycling of at least part of the vapors to the reaction space (19) and/or to the stripping (21) of the reaction mixture. This process achieves high conversion yield with reduced energy consumption and low implementation costs.</p> |
