Drying process

Details Drying process Drying process

1988-04-22

1990-12-04

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 36, F26B 304

Patent

active

049743384

ABSTRACT:
When it has been attempted to dry wet polymeric particles in hot air at up to 100.degree. C. it has tended to produce discoloration in the product, introduce aggregates into the product, reduce the dispersibility of the product and reduce the integrity of the surface of the particles. A process of drying has now been developed which comprises heating to an elevated temperature the wet particles in an atomsphere substantially free of oxygen gas so that substantially all of the moisture is removed from association with said particles and under such conditions of time and temperature that any substantial deterioration of said particles is minimized. Preferably the atmosphere is of nitrogen.

REFERENCES:
patent: 3591928 (1971-07-01), Nara
patent: 3599344 (1971-08-01), Nara
patent: 4092784 (1978-06-01), Dietrich et al.
patent: 4310973 (1982-01-01), King
patent: 4565014 (1986-01-01), Doonan

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