Drying and purification of benzanthrone

Details Drying and purification of benzanthrone Drying and purification of benzanthrone

1992-08-13

1994-01-25

Cintins, Marianne M.

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

Organic compounds

Polycyclo ring system containing anthracene configured ring...

C09B 302

Patent

active

052817296

ABSTRACT:
A continuous closed-system process for the environmentally friendly drying and purification of benzanthrone which comprises the steps of charging a benzanthrone-containing paste of pumpable consistency onto a melt held in a stirred kettle, dewatering and melting the paste by means of steam, condensing the water vapor emerging from the stirred kettle, flaking the melt from the stirred kettle by means of a rotating drum, and packaging the flaked solids.

REFERENCES:
patent: 1591715 (1926-07-01), Lyford
patent: 1794848 (1931-03-01), Gubelmann et al.

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