Abstract: The present disclosure relates to a fabric filter system, which may be used for removing particulate matter from a gas, such as a combustion process gas. The fabric filter system includes fabric filters (3) in a filter module. From the fabric filters (3), gas flows through a filter plenary space (5) and into an outlet duct (7). A flow control device (17) controls the amount of gas flowing into and through the outlet duct (7). The flow control device (17) comprises a guillotine-type damper (17). The guillotine-type damper (17) provides reliable and efficient control of the gas flow from the filter plenary space (5) into the outlet duct (7). A collar (21), fluidly connecting the filter plenary space with the outlet duct, improves the gas flow into the outlet duct (7).

Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for preventing the plugging, blockage and/or contamination of an SCR catalyst. In another embodiment, the method and apparatus of the present invention is designed to protect an SCR catalyst from plugging and/or blockage from large particle ash that may be generated during combustion.

Abstract: A portable handheld canister vacuum including an upper, central, and lower housing is disclosed. First and second grills can separate the housing sections. An air intake opening can direct air and dirt in a first axial direction to a dirt capturing device in the lower housing. An air propulsion device directs air in a second axial direction opposite to the first axial direction into the central housing and from there into the upper housing. An exhaust opening disposed through the upper housing and leading to the interior region of the upper housing allows air to exit the interior region of the upper housing. The exhaust can exit the upper housing in a direction substantially perpendicular to the first and second axial directions.

Abstract: A chimney filter system featuring two or more filter housings mounted atop an industrial chimney stack and a reservoir fluidly connected to the lower filter housing via a first drain pipe that allows water to flow from the lower filter housing to the reservoir. The reservoir allows contaminants in the water to collect on the bottom surface of the reservoir. A second drain pipe is fluidly connected to the reservoir via a pump. The pump and second drain pipe deliver water from the reservoir to the upper filter housing.

Abstract: A non-woven textile based filter media is produced from polyester fiber generated using recycled polyethylene terephthalate (PET) beverage bottles, and that non-woven textile based filter media is used to make an air filter. By controlling the diameters and lengths of the PET derived polyester fibers, a non-woven textile based filter media that exhibits a natural Minimum Efficiency Reporting Value (MERV) of about 8 (without requiring electrostatic treatment) and a pressure drop of 2.9 PSI or less can be achieved. A related exemplary embodiment is an air filter fabricated entirely from recycled materials, including a recycled cardboard frame, the non-woven textile based filter media made from recycled PET derived polyester fibers, and a support structure made of recycled plastic or metal wire.

Abstract: A system for conditioning air flow to a gas turbine includes a filter housing and a conditioning media inside the filter housing to adjust the temperature of the air flowing through the filter housing. At least one of a depth or a density of the conditioning media varies across the filter housing. A method for conditioning air flow to a gas turbine includes flowing air through a filter housing connected to the gas turbine and flowing the air across a conditioning media in the filter housing. The method further includes conditioning the air flow to reduce the temperature difference of the air exiting the filter housing across a dimension of the filter housing.

Abstract: A method for operating a ducted fumehood with increased energy efficiency, wherein the method includes passing exhaust air from the ducted fumehood through a heat exchanger, and passing other air through the heat exchanger, so as transfer heat content from the exhaust air to the other air, or to transfer heat content from the other air to the exhaust air, so as to temperature-condition the other air.

Abstract: A portable dust collector comprises a rectangular box-shaped housing containing a rectangular box shaped filter chamber having a dust collection volume in a lower portion thereof and providing plenums for operative gas circulation in a compact environment. The filter chamber shares a portion of the floor with the housing and has a pair of internal parallel sidewalls spaced inwardly from the outside sidewalls of the housing. The internal sidewalls define a plurality of filter chamber dirty gas inlets located just under an apertured cell plate from which the filters hang. The system is provided with a pulse jet cleaning system located in the clean air plenum above the cell plate.

Abstract: Fluted filter media includes filter material having a plurality of flutes formed therein having alternating ends of adjacent flutes closed to force fluid through filter material. A first embodiment of the filter media includes tapered flutes which have the open ends of the flutes larger in cross-section than the closed flutes, wherein the upstream open flutes converge toward the downstream end and the upstream closed end flutes diverge toward the downstream end. A second embodiment includes filter media which is asymmetric formed with dissimilar upstream and downstream flute cross-sections with larger flute openings to the upstream side of the filter. A third embodiment includes filter media with an upstream edge crushed to improve flow at the upstream edge. A fourth embodiment includes filter media with the upstream sealing material recessed from the upstream edge for reducing effects from blockages at the upstream edge of the filter.

Abstract: A recycling method and to a plant (10) for manufacturing containers (12) from thermoplastic preforms (14), is characterized in that the plant (10) includes a circuit (60) for recycling the cooling air from the oven (26) including: extraction elements (56), which are capable of extracting the filtered air injected into the interior of the oven (26) by an air-cooling device (34); and at least one duct (62, 74) capable of bringing all or part of the filtered air extracted from the oven (26) as far as at least one unit (38, 48) of the plant into which the air is injected.

Abstract: The invention relates to a vacuum cleaner filter bag, including an inlet opening (3), a filter bag material which has an inner layer of nonwoven material (10) at least in the region of the inlet opening, and a holding plate (2) which is arranged on the outside of the filter bag in the region of the inlet opening, can be attached to a vacuum cleaner holding means for securing the vacuum cleaner filter bag and on which a closure device (4) for closing the inlet opening is provided, wherein the nonwoven material, in the region of the inlet opening, has a surface (20) which is provided in such a manner that the formation of a filter cake on said surface is avoided.

Abstract: A filter includes a membrane having a plurality of nanochannels formed therein. A first surface charge material is deposited on an end portion of the nanochannels. The first surface charge material includes a surface charge to electrostatically influence ions in an electrolytic solution such that the nanochannels reflect ions back into the electrolytic solution while passing a fluid of the electrolytic solution. Methods for making and using the filter are also provided.

Abstract: An exhaust gas purifying system includes an exhaust gas purifying apparatus provided with a gas inlet side connected to an inlet pipe and a gas outlet side connected to an exhaust pipe. A holding sealing material of the exhaust gas purifying apparatus has a first side face and a second side face. The first side face is positioned on the gas outlet side and has a first slanting face formed on the first side face. The first slanting face has a first inside end point and a first outside end point. The first inside end point is positioned between the gas inlet side and the first outside end point. The first slanting face extends from the first inside end point to the first outside end point and is tilted relative to an end face of an exhaust gas treating body of the exhaust gas purifying apparatus.

Abstract: A particulate filter may comprise an inlet end, an outlet end, and a plurality of parallel channels disposed and configured to flow fluid from the inlet end to the outlet end, the channels being defined by a plurality of porous walls configured to trap particulate matter. The particulate filter may define at least one filtration region including a first group of channels and at least one bypass region including a second group of channels, wherein at least some of the channels in the first group of channels are plugged at an end thereof, wherein the channels in the second group of channels are unplugged, and wherein greater than or equal to about 70% of the plurality of parallel channels are plugged at an end thereof.

Abstract: An apparatus, system, and method for preventing server contamination. The system includes a server rack and a contamination filter secured to the server rack. The contamination filter may be configured to filter particulate substances and/or chemical substances from air. The system may include a reaction coupon configured to indicate the presence of particulate substances and/or chemical substances in the air.

Abstract: Certain embodiments of the invention may include systems, methods, and apparatus for mounting filters. According to an example embodiment of the invention, a method is provided for mounting one or more filters in a housing with a tubesheet, an intermediate support, and a directional mount. The method can include providing a filter with a first filter section, manipulating the first filter section with respect to the intermediate support, and manipulating the first filter second end with respect to the intermediate support, where the first filter second end maintains its relative position with respect to the intermediate support, and the intermediate support is operable to engage with a second end of the directional mount.

Abstract: An air filtration system includes a housing that is interchangeably positioned within a plenum that is in fluid communication between the housing and a room. A fan is positioned within the housing and configured to draw contaminated air from the plenum. At least one filter member is positioned within the housing and configured to filter the contaminated air. A flexible duct is configured to channel filtered air from the housing to the room. The flexible duct is configured to enable the interchangeability of the housing.

Abstract: In at least some embodiments, the present invention relates to an air cleaner having a housing portion, and a low profile rain cover having an opening on an underside of the cover to allow unfiltered air to enter into the air cleaner. Also, in at least some embodiments, the present invention relates to an air cleaner including a housing and an additional component by which the air cleaner is capable of being directly coupled to a carburetor inlet. In some such embodiments, one or more protrusions can be provided within a channel formed by the housing/additional component to influence air flow. Further, in at least some embodiments, the present invention relates to an air cleaner having a shaped wall formed on a housing portion, where the shaped wall includes both an interior surface and an exterior surface by which air flowing within the air cleaner is imparted with helical motion.

Abstract: The present invention provides an air filter including a main body, a pressure fan, a filter mode and a fixing assembly. The main body has a containing room, an entrance hole and an exit hole. The pressure fan is disposed in the containing room. The filter mode includes a first filter layer, a second filter layer and a frame body. The first filter layer is disposed in the entrance hole, and the second filter layer is disposed in the frame body. As such, users can select to use only the first filter layer or both filter layers at one time. Moreover, users only need to let the frame body pivot to a position away from the entrance hole so that users can change the filter layers faster and easier.

Abstract: A system for conditioning air flow to a gas turbine includes a filter housing and a conditioning media inside the filter housing to adjust the temperature of the air flowing through the filter housing. At least one of a depth or a density of the conditioning media varies across the filter housing. A method for conditioning air flow to a gas turbine includes flowing air through a filter housing connected to the gas turbine and flowing the air across a conditioning media in the filter housing. The method further includes conditioning the air flow to reduce the temperature difference of the air exiting the filter housing across a dimension of the filter housing.

Abstract: A purging apparatus for a storage chamber is disclosed. The purging apparatus is configured for establishing a purge gas flow through the storage chamber. The purging apparatus may include a gas purifier and a particle filter. The gas purifier may provide a purge gas to the storage chamber. The purge gas may flow through the storage chamber, and a mixture of the purge gas and potential contaminants may subsequently exit the storage chamber as exhaust gas. The particle filter may receive and filter the exhaust gas. The filtered gas may be provided to the gas purifier for purification and recirculation. The gas purifier may purify the filtered gas by substantially removing at least one of: an acid, a base, an organic compound, water or oxygen from the filtered gas. The purified filtered gas may then be recirculated and provided to the storage chamber as the purge gas.

Abstract: An air filter for electrical equipment includes metallic filter media including a first outer layer, an opposing second outer layer, and at least one inner layer disposed between the first outer layer and the opposing second outer layer, and a frame disposed along a perimeter edge of the filter media configured to retain the filter media.

Abstract: A method for operating a particle filter that filters particles contained in the exhaust of motor vehicle combustion engines. A conditioning step is performed such that the separation efficiency of the particle filter for particles is increased relative to the value existing in the new condition.

Abstract: A method of transferring filter media between a media bed of a dry scrubber and a filter media container, comprising placing the media bed in flow communication with the filter media container, obstructing a majority of an airflow path of the media bed, the airflow path extending from an unfiltered air input opening of the dry scrubber, through the media bed of the dry bed scrubber, to a filtered air output opening of said dry bed scrubber, powering a blower in the airflow path of the media bed when the airflow path is obstructed and the media bed is in flow communication with the filter media container, whereby the filter media is transferred between the media bed and the filter media container.

Abstract: A crankcase ventilation filter assembly and components therefor, are described. In an example arrangement, the crankcase ventilation filter assembly is configured to be serviced from either the top or the bottom. A rotational indexing arrangement is to ensure appropriate orientation of an internally received filter cartridge, and other components of the arrangement are provided. Methods of assembly, servicing and use are described.

Abstract: An air filter replacement system for existing buildings, vehicles, arenas, and other enclosed airspaces includes a replacement air filter for replacing a standard air filter. The replacement air filter has dimensions and air flow specifications that allow it to replace the standard air filter. The replacement air filter includes a filter material that removes radiological or biological or aerosol particles.

Abstract: The invention is directed to replacement media advancing air filter in air handling units with a flow channel. The filter having a housing and an exposure slot with filter media storage area that has an unexposed pleated, folded filter media portion stored therein. The filter media portion being folded and stacked in and compactly held at least in part within the storage area. A motor is coupled to a power supply and in communication with a controller. The motor moves a movement member that moves a portion of the filter media from a stored state in the storage area into the exposure slot and is exposed to the air in the air flow channel creating an exposed portion of the filter media. The exposed portion is collected within a containment area as a further portion of media is moved into the exposure slot to replace the exposed portion therein.

Abstract: A non-woven textile based filter media is produced from polyester fiber generated using recycled polyethylene terephthalate (PET) beverage bottles, and that non-woven textile based filter media is used to make an air filter. By controlling the diameters and lengths of the PET derived polyester fibers, a non-woven textile based filter media that exhibits a natural Minimum Efficiency Reporting Value (MERV) of about 8 (without requiring electrostatic treatment) and a pressure drop of 2.9 PSI or less can be achieved. A related exemplary embodiment is an air filter fabricated entirely from recycled materials, including a recycled cardboard frame, the non-woven textile based filter media made from recycled PET derived polyester fibers, and a support structure made of recycled plastic or metal wire.

Abstract: This patent covers the any use of vetiver roots material to provide shade, cooling and humidifying effect to any indoor or outdoor area. The use of vetiver root material could be in form of a mat, carpet or rug, however, not limited to them in their use to provide cooling and humidifying effect. A wet or dry mat using vetiver roots is placed in path of any natural or forced air to cool the air that is passing through. The air may be naturally flowing or forced via fan through the mat to provide cooling effect as well as cleaning effect. The patent also covers the use of water with the vetiver mat to provide additional cooling and humidity. The solution significantly reduces energy consumption.

Abstract: A filter has a filter element that removes oil from an oil-containing air stream that is supplied to the filter from a gear transmission of a machine tool or of a compressor. The air-containing air stream upon passing through the filter is separated into a clean air stream and into an oil stream. A return line is provided that returns the oil stream to the gear transmission.

Abstract: Disclosed herein is a polymeric filtration medium including at least one fibrous mat of randomly oriented fibers of a polymer. The polymer has a molecular weight distribution (Mw/Mn) between about 1.4 and about 6 and a melt flow rate greater than about 1000 g/10 minutes. Also disclosed herein are methods of making and using the polymeric filtration medium. Further disclosed herein is a composite filtration medium incorporating the polymeric filtration medium.

Abstract: A filter bag assembly and an associated method. The assembly has a filter bag that includes at least two sidewalls of filter material spaced from each other at an open end and connected to provide a closed end of the filter bag assembly. At least one of the sidewalls includes at least one folded pleat. In one specific example, the folded pleat extends perpendicular relative to a direction extending from the open end to the closed end.

Abstract: A method for separating mixed granular material based upon dissimilar specific gravities, (such as in firearm range cleaning) thereby separating lead from backstop material. Lead falling from an airstream is airwashed by an upwardly directed second airstream. The preferred method is performed under negative pressure to control lead dust. Application to pick up and clean or recover fouled ballast rock (such as used in the rail industry). Processes and apparatus are disclosed that pick up and clean or enrich precious metal bearing ore.

Abstract: Systems and methods for treating a fluid with a body are disclosed. Various aspects involve treating a fluid with a porous body. In select embodiments, a body comprises ash particles, and the ash particles used to form the body may be selected based on their providing one or more desired properties for a given treatment. Various bodies provide for the reaction and/or removal of a substance in a fluid, often using a porous body comprised of ash particles. Computer-operable methods for matching a source material to an application are disclosed. Certain aspects feature a porous body comprised of ash particles, the ash particles have a particle size distribution and interparticle connectivity that creates a plurality of pores having a pore size distribution and pore connectivity, and the pore size distribution and pore connectivity are such that a first fluid may substantially penetrate the pores.

Abstract: An air filter cartridge is provided including an air filter media construction having a first, outlet end, flow face and an opposite, second, inlet end, flow face. The filter media construction includes fluted media secured to a facing media sheet. The filter media is closed to flow of unfiltered air completely therethrough. A centerboard is provided. The centerboard has a media portion embedded within the media construction. The centerboard has first and second opposite sides. The media portion that is embedded within the media defines an aperture arrangement extending completely through the centerboard from the first side to the second side. An adhering sealant secures the centerboard to the media construction. At least some adhering sealant extends through the aperture arrangement.

Abstract: An integrated air handling system having a make-up air system that treats outside air and a recirculating system that mixes the treated outside air with building return air. The make-up air system may include a filter, a dehumidifier, a humidifier, a combination of a dehumidifier and a humidifier, and/or an exhaust fan. The mixed air is supplied to a structure.

Abstract: An apparatus and a system is provided that may be utilized to provide stability to air flow through a hood scoop. The present invention may also be utilized to straighten and smooth out air flow through a hood scoop and accompanying air filter media. The present invention utilizes an air filtration media which may be inserted into at least a portion of a vehicle hood scoop and may filter out particulate and may also slow air flow down temporarily in order to straighten and/or smooth turbulent air flow through the air filtration media.

Abstract: A moisture diversion system for a gas turbine inlet. The moisture diversion system comprises a housing that is operably connected with a gas turbine and defines an opening through which air flows to the gas turbine. A hood is attached to the housing adjacent the opening. The hood has a surface disposed at an acute angle relative to horizontal. A device is disposed relative to the hood to separate moisture from air flowing through the device. Separated moisture is directed onto the hood. A gutter is disposed adjacent an edge of the hood to collect moisture from the hood. A conduit is fluidly connected with the gutter to conduct water away from the gutter and the opening in the housing to inhibit separated moisture from re-entering the air flow through the opening to the gas turbine.

Abstract: An air inlet system (100) for an internal combustion engine includes an air filter (1) and a flow resistance means (2). The air filter (1) includes one or more filter elements (12), an interior chamber (3) and a suction opening (6). The suction opening (6) is provided to connect the interior chamber (3) to a suction channel (7) of an engine. During operation of the engine, the combustion air flows through the one or more filter elements (12) into the interior chamber (3) and from the interior chamber (3) into the suction channel (7). Further, the interior chamber (3), the suction opening (6) and the suction channel (7) together define a combustion air flow path. The flow resistance means (2) is provided in the combustion air flow path. During the operation of the engine, a portion of the combustion air flows through the flow resistance means (2).

Abstract: Fluted filter media includes filter material having a plurality of flutes formed therein having alternating ends of adjacent flutes closed to force fluid through filter material. A first embodiment of the filter media includes tapered flutes which have the open ends of the flutes larger in cross-section than the closed flutes, wherein the upstream open flutes converge toward the downstream end and the upstream closed end flutes diverge toward the downstream end. A second embodiment includes filter media which is asymmetric formed with dissimilar upstream and downstream flute cross-sections with larger flute openings to the upstream side of the filter. A third embodiment includes filter media with an upstream edge crushed to improve flow at the upstream edge. A fourth embodiment includes filter media with the upstream sealing material recessed from the upstream edge for reducing effects from blockages at the upstream edge of the filter.

Abstract: Embodiments of the invention generally provide a containment system having integrated bubble tight-dampers. In another embodiment, the containment system includes an integral auto-scan mechanism disposed in the housing of the containment system so that a filter element, disposed in the housing, may be leak tested without accessing the interior of the housing. In yet another embodiment, a method for testing a filter disposed in a containment system includes challenging an upstream side of a filter element disposed in a housing of the containment system with a test aerosol, and automatically moving a probe disposed within the housing to obtain samples for leak testing.

Abstract: A dust screen for an inspection hatch disposed in the roof or a side wall of a dry bulk storage unit for use during pneumatic loading of aggregate material from a pneumatic trailer via air pressure ducted into the bulk storage unit. The dust screen includes an elastic cord in a hem surrounding an open end of the screen to secure the dust screen to the inspection hatch. An alternative embodiment may include a binding strap having a ratchet buckle to supplement the elastic cord. As the dust screen extends upward in the presence of said air pressure, the dust is allowed to settle into the storage unit. No separate container to contain the dust is required, and no separate structure is required to support the dust screen during operation. The dust screen is light weight, portable and reusable, and low in cost.

Abstract: An improved system and method for purging a microenvironment to desired levels of relative humidity, oxygen, or particulates through the implementation of a purge gas delivery apparatus and method that provides even distribution of the purging gas within the microenvironment. A substrate container has a tower therein with a fluid flow passageway extending the length of the tower. Apertures with porous media between the aperture and fluid flow passageway regulate the volume and pressure of air discharging at each aperture. Alternatively, the tower may be formed of a porous tubular polymeric material. A sleeve may direct the discharge purge gas in the interior.

Abstract: Disclosed are tubular surface coalescers, systems, and methods for coalescing a mixture of two phases, namely a continuous phase and a dispersed phase. The disclosed tubular surface coalescers, systems, and methods include or utilize one or more layers of media material having a distinct mean pore size and wettability applied to a surface of a porous tubular support structure.

Abstract: To provide a filter device for separating paint overspray from a raw gas flow containing overspray particles, comprising a casing, which delimits an interior of the filter device, in which at least one filter element is arranged, and at least one inlet channel, through which the raw gas flow enters the interior of the filter device, in which the raw gas flow is stabilised by the inlet channel even with high flow speeds in the constriction of the inlet channel, it is proposed that the filter device has an intake channel, which runs into the inlet channel upstream of an end of the inlet channel on the interior side and connects the inlet channel to the interior of the filter device.

Abstract: A filter includes a membrane having a plurality of nanochannels formed therein. A first surface charge material is deposited on an end portion of the nanochannels. The first surface charge material includes a surface charge to electrostatically influence ions in an electrolytic solution such that the nanochannels reflect ions back into the electrolytic solution while passing a fluid of the electrolytic solution. Methods for making and using the filter are also provided.

Abstract: A method for purifying polluted air having particle phase pollutants and gaseous phase pollutants is provided. The method comprising: separately purifying and treating particle phase and gaseous phase pollutants present in the air; providing a dust cleaning apparatus, a catalytic filter core and a valve for controlling an airflow path within an air purification apparatus; controlling the airflow path for the air to bypass the catalytic filter core in a way that: if the amount of particle phase pollutants is above a predetermined value, the valve is moved to the open position to enable the air to bypass the catalyst filtering core; if the amount of particle phase pollutants is less than a predetermined value, the valve is moved to the closed position to force the air to pass through the catalyst filtering core.

Abstract: Disclosed herein is a filter apparatus comprising a fluid inlet for a fluid to be filtered in the apparatus; a first fluid outlet for fluid that has been filtered; and one or more barrier filters arranged between the fluid inlet and the first fluid outlet for filtering material from the fluid. In use, the fluid to be filtered is directed from the fluid inlet so as to promote a continuous erosion of material built up on the barrier filter(s). Also disclosed is a method of filtering particles from a particle laden fluid.

Abstract: The present invention provides a system and method for transmitting information between a device within a housing to a second device, preferably a test or monitoring unit, outside of the housing. There are numerous issues associated with transferring information from within a sealed housing to an external device. In some cases, the use of wires inside the housing may be impractical, due to internal conditions, such as fluid flow, pressure or temperature. In one embodiment, the antenna of the external RF reading device is electrically connected to the dome of the housing. In another embodiment, the device within the housing is electrically connected to a housing component. In another embodiment, the gasket is used to pass information from within the housing to an external device.

Abstract: The present invention provides a system and method for transmitting information between a device within a housing to a second device, preferably a test or monitoring unit, outside of the housing. There are numerous issues associated with transferring information from within a sealed housing to an external device. In some cases, the use of wires inside the housing may be impractical, due to internal conditions, such as fluid flow, pressure or temperature. In one embodiment, the antenna of the external RF reading device is electrically connected to the dome of the housing. In another embodiment, the device within the housing is electrically connected to a housing component. In another embodiment, the gasket is used to pass information from within the housing to an external device.