Process for collecting a contaminated substance and apparatus th

Details Process for collecting a contaminated substance and apparatus th Process for collecting a contaminated substance and apparatus th

1987-05-19

1989-08-15

Joyce, Harold

98 36, F24F 900

Patent

active

048564192

ABSTRACT:
A process and apparatus for collecting a contaminated substance by means of an upwardly directed suction gas flow caused by a dust collection hood also includes the provision of a downwardly directed air curtain blown out by means of a forced air blower so as to be parallel to the suction gas flow in a counterflowing mode as well as annularly surrounding the upwardly directed suction gas flow and the contamination source. By providing the counterflowing air flows with predetermined relative volume flow rates and velocity flow rates, diffusion of the contaminated substances exteriorly of the downwardly directed annular air flow curtain is effectively prevented.

REFERENCES:
patent: 2863373 (1958-12-01), Steiner
patent: 3708414 (1973-01-01), Laube
patent: 4450756 (1984-05-01), Kling
patent: 4552059 (1985-11-01), Potter

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