Process for the production of urea

Details Process for the production of urea Process for the production of urea

1984-08-13

1987-06-02

Hines, Robert V.

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

Organic compounds

Amino nitrogen containing

564 70, 564 71, C07C12602

Patent

active

046705880

ABSTRACT:
A process for the synthesis of urea from ammonia and carbon dioxide in which high yield reaction and optimal reactor heat balance control are achieved at the same time by using two reaction zones, where two different NH.sub.3 /CO.sub.2 molar ratios are maintained, and by treating the effluent from the second reaction zone in a separation treatment in two steps in series; the reactant gas stream discharged from the second treatment step is recycled, after partial condensation, to the first reaction zone, while at least part of the gas stream discharged from the first treatment step is recycled directly to the second reaction zone, the gas stream from both the first and second treatment step being so controlled as to obtain optimal NH.sub.3 /CO.sub.2 ratios and optimal reaction temperatures in the two reaction zones.

REFERENCES:
patent: 3607938 (1971-09-01), Braun
patent: 3984469 (1976-10-01), Guadalupi et al.
patent: 4066693 (1978-01-01), Venderbos
patent: 4137262 (1979-01-01), Gaudalupi et al.
patent: 4208347 (1980-01-01), Pagani
patent: 4314077 (1952-02-01), Zardi et al.

Affiliated with

Also associated with

Rating

Process for the production of urea does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the production of urea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of urea will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-615139