Process for drying porous materials

Details Process for drying porous materials Process for drying porous materials

1975-05-28

1976-06-15

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

F26B 300, F26B 500

Patent

active

039627985

ABSTRACT:
Process, suitable for drying water-wet porous materials, for example, textiles, which comprises forcing a displacement liquid through the open interstices of the water-wet porous material to remove the water, the displacement liquid consisting of a water-immiscible, normally liquid organic solvent having a surface-active agent dissolved therein, said displacement liquid having at 25.degree.C. an interfacial tension versus water of no greater than about 10 dynes cm..sup..sup.-1 at 25.degree.C., a density of at least about 1.25 grams cm..sup..sup.-3 and an advancing adhesion tension versus platinum which is positive, and recovering porous material whose open interstices are substantially free of liquid water.

REFERENCES:
patent: 3791044 (1974-02-01), Busker et al.
patent: 3903012 (1975-09-01), Brandreth

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