Vacuum drying method

Details Vacuum drying method Vacuum drying method

1990-01-17

1992-03-17

Manoharan, Virginia

Concentrating evaporators

Processes

159 261, 159 49, 159DIG10, 159DIG16, 203 1, 203 50, 203 89, 203 91, 403270, 403904, 562485, B01D 124, B01D 310, B01D 334

Patent

active

050965387

ABSTRACT:
A vacuum drying method wherein a solution of a material to be dried which has been adjusted to 1-50 centipoise, is supplied to a steam-heated long tube, solid-vapor mixture of powdery dry material and vapor produced in the tube is blown out under reduced pressure, and the powdery dry material and vapor are separated so as to obtain powdery dry material.

REFERENCES:
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patent: 4254194 (1981-03-01), Merrill et al.
patent: 4273855 (1981-06-01), Jaeken et al.
patent: 4756998 (1988-07-01), Helling et al.
patent: 4816368 (1989-03-01), Skaggs
patent: 4857961 (1989-08-01), Ogiso et al.
patent: 4865942 (1989-09-01), Gottschalk et al.
patent: 4891298 (1990-01-01), Waller
patent: 4900782 (1990-02-01), Han et al.

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