Ventilation apparatus providing air extraction adjacent...

Details Ventilation apparatus providing air extraction adjacent... Ventilation apparatus providing air extraction adjacent...

B - Operations, Transporting

08

B

B08B 15/02 (2006.01) B08B 15/00 (2006.01)

Patent

CA 2159950

An exhaust ventilation apparatus to be temporarily mounted in a continuous pulp digester or similar elongated vessel to provide local air ventilation from one or more selected worksites in the vessel. An exhaust duct extending upwardly to an outlet opening has numerous inlet ports spaced along it. Venturi type air movers each having an air collection conduit attached to it are connected to several of the inlet ports of the exhaust duct. Each air collection conduit is mounted with an inlet located near one of the selected worksites to draw polluted air out of the vessel through the exhaust duct. The air movers and/or the air collection conduits are easily movable as work progresses.

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