Method of applying a wettant to a filtering media

Details Method of applying a wettant to a filtering media Method of applying a wettant to a filtering media

1991-10-02

1992-05-12

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55524, 55527, 55DIG24, 55DIG42, 427244, B01D 4600

Patent

active

051123690

ABSTRACT:
A method of applying a wettant to an air laid, non-woven, fibrous filter web or other filter media includes the steps of atomizing the wettant into relatively small particles having a diameter equal to or less than about 1/2 of the diameter of the smallest fiber in the web or mat, and entraining the particles in a carrier air stream. The carrier air stream is forced through the batt at a face velocity substantially greater than the face velocity that the filter media sees when it is used to filter contaminant particles in use. Accordingly, dispersal of the wettant throughout the batt is assured, and migration of the particles into the effluent air stream when the batt is used in filtering is reduced or eliminated.

REFERENCES:
patent: 2400179 (1946-05-01), Venable
patent: 2855330 (1958-10-01), Griswold et al.
patent: 3399516 (1968-09-01), Haugh, Jr., et al.
patent: 3505794 (1970-04-01), Nutter et al.
patent: 3675393 (1972-07-01), Meade
patent: 4525385 (1985-06-01), Pryor
patent: 4608173 (1986-08-01), Watanabe et al.
patent: 4702940 (1987-10-01), Nakayama
patent: 4765812 (1988-08-01), Hamonoff et al.

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