公开(公告)号：US4308234A

公开(公告)日：1981-12-29

申请号：US210384

申请日：1980-11-26

Applicant: Primo Pastormerlo

Inventor： Primo Pastormerlo

IPC: B01J3/04 ,  B01J10/00 ,  C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  C07C273/16

CPC classification number: F02F1/4264 ,  B01J10/005 ,  B01J3/044 ,  C07C273/04

Abstract: A device for treating urea solutions coming from synthesis reactors and containing in addition to the formed urea also free ammonia, water and unreacted ammonium carbamate having two steps wherein in the first step, a substantial amount of ammonia is distilled while ammonium carbamate is only partially decomposed, and in the second step, the bulk of carbamate is decomposed and the residual ammonia is distilled.

Abstract translation: 用于处理来自合成反应器的尿素溶液并且除了形成的尿素之外还含有游离氨，水和未反应的氨基甲酸铵的装置，其具有两个步骤，其中在第一步中，大量氨被蒸馏，而氨基甲酸铵仅部分分解 ，在第二步中，大部分氨基甲酸酯被分解并残留氨被蒸馏。

公开(公告)号：US4269997A

公开(公告)日：1981-05-26

申请号：US56551

申请日：1979-07-11

Applicant: Primo Pastormerlo

Inventor： Primo Pastormerlo

IPC: B01J3/04 ,  B01J10/00 ,  C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  C07C273/16 ,  C07C126/02

CPC classification number: F02F1/4264 ,  B01J10/005 ,  B01J3/044 ,  C07C273/04

Abstract: A process and a device for treating urea solutions coming from synthesis reactors and containing in addition to the formed urea also free ammonia, water and unreacted ammonium carbammate having two steps wherein in the first step, a substantial amount of ammonia is distilled while ammonium carbammate is only partially decomposed, and in the second step, the bulk of carbammate is decomposed and the residual ammonia is distilled.

Abstract translation: 用于处理来自合成反应器的尿素溶液和含有形成的尿素的方法和装置还游离氨，水和未反应的氨基甲酸铵，其具有两个步骤，其中在第一步中，大量氨被蒸馏，而氨基甲酸铵是 仅部分分解，在第二步中，大量的碳酸盐被分解并残留氨被蒸馏。