Integrated urea/ammonia process

Details Integrated urea/ammonia process Integrated urea/ammonia process

1995-06-16

1996-06-04

O'Sullivan, Peter

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564 69, C07C27310

Patent

active

055234836

ABSTRACT:
An integrated ammonia/urea process and a plant for carrying out the same. The process comprises recycling a high pressure purge stream made up mostly of air from the urea synthesis cycle to the autothermal reformer in a syngas production unit of the ammonia process. In such a manner, compression energy required for ammonia synthesis can be reduced since a portion of the high pressure air feed to the autothermal reactor is supplied by the urea purge stream recycle. In addition, the equipment needed to clean up the urea purge stream is largely eliminated.

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patent: 5176800 (1993-01-01), Zardi et al.
patent: 5223238 (1993-06-01), Czuppon et al.

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