Process for urea production involving a carbon dioxide stripping

Details Process for urea production involving a carbon dioxide stripping Process for urea production involving a carbon dioxide stripping

1995-06-07

1997-11-04

Kumar, Shailendra

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

Organic compounds

Amino nitrogen containing

564 70, C07C27304

Patent

active

056841949

ABSTRACT:
An improved process for urea production as well as a method of retrofitting a pre-existing urea plant based on the Stamicarbon process are disclosed. According to the invention, a high-yield reactor with partial removal of the reaction heat and a urea recovery section of the solution leaving the high-yield reactor, are added to the pre-existing urea plant, means being provided for recycling unreacted ammonia and carbon dioxide vapors as well as a carbamate solution obtained in the urea recovery section to the pre-existing reactor.

REFERENCES:
patent: 4504679 (1985-03-01), Inou et al.
patent: 4613696 (1986-09-01), Zardi
patent: 5359140 (1994-10-01), Granelli et al.

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