Method for the production of urea

Details Method for the production of urea Method for the production of urea

2005-04-05

2005-04-05

O'Sullivan, Peter (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S070000, C564S071000, C564S072000

Reexamination Certificate

active

06875892

ABSTRACT:
A method for the production of synthesis urea from liquid ammonia and gaseous carbon dioxide, comprising the step of feeding separate flows (6, 8) of liquid ammonia and gaseous carbon dioxide in continuous to a substantially vertical or horizontal column synthesis reactor (1), is distinguished in that the feed of liquid ammonia is split up into at least two consecutive sections (Z1-Z7) of said column.

REFERENCES:
patent: 4590044 (1986-05-01), Mos et al.
patent: 6287525 (2001-09-01), Pagani
patent: 6632967 (2003-10-01), Scholten et al.
patent: 0 495 418 (1992-07-01), None
patent: WO-9531278 (1995-11-01), None

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