Method of manufacture for paraformaldehyde prills

Details Method of manufacture for paraformaldehyde prills Method of manufacture for paraformaldehyde prills

1984-06-29

1985-10-29

Lone, Werren B.

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

Organic compounds

Oxygen containing

568420, 568449, 568457, C07C 4702

Patent

active

045502137

ABSTRACT:
An improvement for manufacturing paraformaldehyde prills from an aqueous solution of formaldehyde which comprises polymerizing the formaldehyde in the presence of a catalyst of sodium hydroxide in a concentration of from about 0.5 to about 5 ppm, aging the resulting mixture at about 100.degree. to about 130.degree. C. for about 10 to about 60 minutes, spraying the aged mixture into a prilling tower at from about 100.degree. to about 130.degree. C., collecting the prills in a fluidized bed at the base of the tower at from about 45.degree. to about 60.degree. C., removing the prills to a separate vessel where the prills further polymerize and dry at from about 15.degree. to about 30.degree. C. for about 3 to about 5 hours while operating the vessel in a plugged flow manner, and collecting the resulting prills.

REFERENCES:
patent: 2568018 (1951-09-01), MacLean et al.
patent: 3118859 (1964-01-01), Delassus et al.
patent: 3300535 (1967-01-01), Yakimik et al.
patent: 3316309 (1967-04-01), Mann et al.
patent: 3423363 (1969-01-01), Fournel et al.
patent: 3595926 (1971-07-01), Mann et al.
patent: 3632655 (1972-01-01), Paleologo et al.
patent: 3772392 (1973-11-01), Paleologo et al.
patent: 4036891 (1977-07-01), Moller et al.

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