Process for the production of concentrated cyanuric acid slurrie

Details Process for the production of concentrated cyanuric acid slurrie Process for the production of concentrated cyanuric acid slurrie

1979-06-06

1980-12-02

Ford, John M.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D25132

Patent

active

042372852

ABSTRACT:
Concentrated slurries of cyanuric acid are produced in a process which comprises feeding urea to a hot solvent. In the hot solvent, the urea is pyrolyzed to produce a reaction mixture of cyanuric acid particles in the solvent. Agitation of the reaction mixture forms a suspension of cyanuric acid particles. At cyanuric acid concentrations of from about 20 to about 50 percent by weight, the cyanuric acid particles are settled from the suspension to produce a concentrated slurry phase and a supernatent solvent phase. The concentrated slurry phase is then separated from the solvent phase.
The process produces concentrated cyanuric acid slurries which minimize the complexity and cost of solvent recovery, reduces energy requirements for heating the reaction mixture and recovering the solvent, and maximizes heat transfer efficiency during the pyrolysis reaction.

REFERENCES:
patent: 3297697 (1967-01-01), Reynolds et al.
patent: 3635968 (1972-01-01), Goetz et al.
patent: 3886153 (1975-05-01), Berkowitz
patent: 3953443 (1976-04-01), Ohata et al.
patent: 3954751 (1976-05-01), Fuchs
patent: 3994892 (1976-11-01), Den Otter et al.

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