Method for the condensation of carbammate in urea-synthesis inst

Details Method for the condensation of carbammate in urea-synthesis inst Method for the condensation of carbammate in urea-synthesis inst

1976-04-20

1978-04-04

Meros, Edward J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12600, C07C12602

Patent

active

040827976

ABSTRACT:
In a urea-synthesis installation, the problem of the condensation of the ammonium carbamate is solved by providing a condensation zone composed of a horizontal tube bundle which is placed under the static pressure of a liquid head. The ratio of the liquid head height to the diameter of the circumference encompassing the outermost tube layer of the bundle of tubes is critical: it should be between 5 and 30, 10 being the preferred value.

REFERENCES:
patent: 2302993 (1942-11-01), Graham
patent: 2560070 (1951-07-01), Bloomer
patent: 3607938 (1971-09-01), Braun
patent: 3940440 (1976-02-01), Mavrovic
patent: 3984469 (1976-10-01), Guadalupi et al.
"Hydrocarbon Processing", Nov. 1971, p. 216.
"Applied Process Design for Chemical and Petrochemical Plants", vol. 3, Chapter 10, 1965, pp. 1-8.

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