Abstract:
A lint‑trapping device 18, 17 for a tumble drier W has a lint‑separating means 16, ahead of which is arranged a lint‑wetting device 17. A tumble drier W has a laundry drum 11 and a process‑air condenser 13, which are connected via a process‑air duct 12, which channels process air P. It also has a lint‑separating means 18, which is arranged in the process‑air duct 12 downstream of the laundry drum 11 and upstream of the process‑air condenser 13, wherein a lint‑wetting device 17 is arranged downstream of the laundry drum 11 and upstream of the lint‑separating means 18.
Abstract:
A method and apparatus are provided for improving the efficiency of an aqueous froth filter. An array of saturated mesh assemblies interacts with an incoming contaminated air stream. As the air stream flows through the saturated mesh assemblies, an aqueous froth is generated immediately downstream of each mesh assembly. As the bubbles of the froth move downstream towards the next saturated mesh assembly, the velocity of the air stream causes at least some of the bubbles to burst. The bursting bubbles rupture into hundreds or thousands of micro-droplets. The micro-droplets are used together with the aqueous froth to coalesce with or otherwise bind with contaminants in the air stream. An optional feature is that massive particles greater than three microns in diameter are removed by inertial impaction, whereby those heavy particles collide with the walls of serpentine shaped vanes of a mist eliminator. The method and apparatus are capable of filtering chemical and biological warfare agents out of an air stream. The invention is also useful in removing contaminants from industrial air streams.
Abstract:
An extraction fan housing (400) adapted to house an extraction fan (402), the housing including inlet ducting (406) adapted to provide directional air inflow into the housing through an air inlet for the air drawn into the inlet ducting by an extraction fan (402), the housing being adapted to be located at or near the upper portion of a workface . The outlet can be deflected downward across the workface by outlet ducting (414).
Abstract:
The invention relates to a method for purifying a gas in an exhaust gas system comprising an exhaust duct comprising a filter for filtering fine particles, said method comprising spraying of water mist into said exhaust duct upstream of said filter for purifying said gas, said spraying being effected by at least one spray nozzle causing a negative pressure for sucking the gas into the sprayed spray and by guiding said mixture aside from said filter and guiding thus purified gas into the filter. Due to the method gases can be continuously purified without the filter of the exhaust gas system being clogged. When applied to a room having a fire the method simultaneously enables purification of flue gases, sucking of heat out from the room and enables small particles to be captured by the filter. The present invention also relates to an exhaust gas system.
Abstract:
The invention relates to a method for purifying a gas in an exhaust gas system comprising an exhaust duct comprising a filter for filtering fine particles, said method comprising spraying of water mist into said exhaust duct upstream of said filter for purifying said gas, said spraying being effected by at least one spray nozzle causing a negative pressure for sucking the gas into the sprayed spray and by guiding said mixture aside from said filter and guiding thus purified gas into the filter. Due to the method gases can be continuously purified without the filter of the exhaust gas system being clogged. When applied to a room having a fire the method simultaneously enables purification of flue gases, sucking of heat out from the room and enables small particles to be captured by the filter. The present invention also relates to an exhaust gas system.
Abstract:
A pollutant emission control system, is disclosed which includes a chamber (31); a layer (23) of expanded metal mesh nets made from expandable metal foil in the chamber; inlet means (12) for introducing heated exhaust gases containing pollutants into the chamber beneath the layer, and spray means (32) for introducing a low temperature water spray into the chamber above the layer.
Abstract:
An apparatus for reducing contaminants in a pulsating exhaust gas, particularly diesel exhaust, on board ships, which apparatus comprises a wet scrubber, which includes a chamber in a housing having a gas inlet and a gas outlet, a fluid injection device and gas filters in the chamber, and a venturi nozzle, having a nozzle inlet and a nozzle outlet, connected to the gas inlet of the scrubber by means of its nozzle outlet.
Abstract:
A unique filtration device (10) which continuously removes several gas phase contaminants from an airstream through the use of partially hollow wicking fibers (20) impregnated with a selected liquid which can capture the gas phase contaminants. The wicking fibers (20) are generally disposed parallel and are formed into a filter element (12) which extends from the airstream to be cleaned into another airstream which can strip and carry away the unwanted gas phase contaminants. The gas phase contaminants are conveyed to the stripping airstream by a concentration factor induced molecular migration. The airstream to be cleaned is directed through a compartment (16) across which the filter element (12) extends so the complete airflow is through filter element (12). Filter element (12) also extends into another compartment (18) through which the stripping airstream flows. The wicking fibers (20) include internal longitudinal cavities (22) each with a relatively small longitudinal extending opening (24). The wicking fibers (20) are filled with the selected contaminant removing liquid through capillary action by which the individual wicking fibers (20) rapidly draw the selected liquid, with which they come into contact, through the internal cavities (22). The absorption liquid remains within the wicking fiber cavities (22) and generally does not enter the space between the wicking fibers, yet through the longitudinal openings (24) the liquid is in full communication with the airstream flowing past the fibers (20).
Abstract:
A system for filtering particles from a gas flow medium comprises a substrate (22) on which a filter layer is provided. The latter is a filter liquid (36) which wets the substrate (22). At least one filter system (20) of this type is arranged in a housing (12) to form a filter device (10). The housing (12) has an inlet aperture (14) and an outlet aperture (16) for the flow medium to be filtered. In order to wet, with filter liquid (36), the gas-permeable substrate (22) of at least one filter system (20) of the filter device (10), the housing (12) is provided with an irrigation system (44) in fluid communication with the filter sytems (20), said irrigation system being in fluid communication with a collection space (38) for the filter liquid (36). A pump (47) serves to circulate said liquid (36) between the collection space (38) and the irrigation system (44).