The use of purge gas for the synthesis of urea in an integrated process of ammonia, urea and installation correlated

摘要

An ammonia-urea plant where purge gas stream (3) generated in the urea section is used as ammonia source for selective catalytic reduction of nitrogen oxides in combustion fumes (4) which are emitted by the ammonia section; a related process and a method for modification of an ammonia-urea plant are also disclosed.