Method of retrofitting a pre-existing plant for urea production including an ammonia stripping section

A method of retrofitting a pre-existing plant for urea production including a first urea synthesis reactor (R) in fluid communication with an ammonia stripping section (SS), achieves substantial energy savings and production capacity increase by providing the steps of connecting a second urea synthe...

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Bibliographic Details
Main Authors U. ZARDI, G. PAGANI
Format Patent
LanguageEnglish
Published 01.09.1999
Edition6
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A method of retrofitting a pre-existing plant for urea production including a first urea synthesis reactor (R) in fluid communication with an ammonia stripping section (SS), achieves substantial energy savings and production capacity increase by providing the steps of connecting a second urea synthesis reactor (ROT) of the "once through" type to and upstream of the ammonia stripping section (SS), and of distributing the overall production capacity of the plant to apportion from 50 to 95% thereof to the first (R) and from 5 to 50% to the second (ROT) urea synthesis reactor.
Bibliography:Application Number: CN19931014781