Abstract: Cross flow filter device comprising a longitudinal first filter element (1) having a first width (w1) and a longitudinal central axis (8), a longitudinal second filter element (2) having a second width (w2) and being longitudinally installed substantially concentrically inside said first filter element (1), a housing (3) surrounding said first filter element (1), said cross flow filter device having respectively a raw material inlet (4), a concentrate outlet (5), and a first filtrate outlet (6) connected to said first filter element (1). The ratio between the second width (w2) and the first width (w1) is 65%, preferably at least 70% and more preferably about 75%.

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: An air filtering unit for a factory includes: an entry duct; a flow expander section fluidly connected with the entry duct, the flow expander section including a flow distribution unit and a flow velocity reduction unit; a filter unit fluidly connected with the flow expander section, the filter unit having a plurality of filter bags, the filter bags being suspended from a tube sheet; and an exit duct fluidly connected with the filter unit. The flow distribution unit includes a series of flow distribution members positioned along a flow path, the flow distribution unit located and configured to substantially equally distribute an airstream along the length of the flow axis into a plurality of divided substreams. The flow velocity reduction unit includes a plurality of flow reduction members, each of the flow reduction members positioned and configured to confront at least one of the divided substreams and reduce the flow velocity thereof.

Abstract: Disclosed herein are modular filter assemblies having a plurality of stacked filter plates formed from a porous material. The filter plate can comprise a planar base portion from which a convoluted ridge wall, having a ridge outer side surface, a ridge inner surface, and a top ridge surface extends. A plurality of fluid inlet troughs and a plurality if fluid outlet troughs are defined by the ridge wall. Adjoining filter plates form a plurality of fluid inlet cavities defined by the fluid inlet trough of one filter plate and a portion of the bottom surface of the adjoining filter plate; and a plurality of fluid outlet cavities defined by the fluid outlet trough of the one filter plate and a portion of the bottom surface of the adjoining filter plate. In use, the plurality of fluid inlet cavities are in filtered communication with the plurality of fluid outlet cavities.

Abstract: A fabric filter (1) has at least a first compartment (2) and a second compartment (4). A hopper (42) is adapted for fluidisation of dust collected in the compartments (2, 4) to form a bed (52) of fluidised dust. A partition wall (62) is located between the compartments (2, 4) to separate them from each other. A passage (68) is formed at a lower end (66) of the partition wall (62) such that fluidised dust may pass through said passage (68). The partition wall (62) is arranged to extend into the bed (52) of fluidised dust for forming a seal (74) even when one of the compartments (2, 4) has been shut off. When shutting off a compartment (4) the inlets and outlets to that compartment (4) are closed and the dust in the hopper (42) is fluidised to provide a seal (74) between the compartments (2, 4).

Abstract: A method for cleaning a filter having Z-media includes providing a filter having Z-media and cleaning the media construction by directing a pulse of compressed gas into the media construction through the downstream flow face. Filter elements useable with such methods include elements made of Z-media. An example system utilizing the method includes a gas turbine air intake system.

Abstract: An extended life filter element is provided that may at least double the service interval of a given filtration application utilizing the same or similar filter housing envelope provided. The filter element may include a more open pleated substrate with an efficiency layer and a prefilter on the upstream surface. The filter may be a foam sleeve. One exemplary application is for air filtration of air flow to electrical cabinets on locomotives.

Abstract: A filter media product and method of making the same wherein the filter media is pleatable and has at least one support scrim comprised of a melt bonded non-woven material or a fuse bonded non-woven material bonded to a layer of expanded polytetrafluoroethylene. The filter media may have a single support scrim with one or more layers and optionally may have a support scrim on both an upstream and downstream surface where both or neither support scrim is multilayered. The filter media may have an efficiency greater than, equal to, or less than HEPA.

Abstract: A coalescer includes fibrous media capturing droplets of the dispersed phase, coalescingly growing the droplets into larger drops which further coalesce and grow to form pools that drain, and adapted to reduce pressure drop thereacross by increasing dispersed phase drainage therefrom.

Abstract: A fabric filter bag (50) and cage (10) system for use in a bag house (66) for industrial process gas stream particulate removal. The bag house (66) includes an inlet (68) for process gas flow into an interior space (65) thereof, at least one fabric filter bag (50) and cage (10) system within the interior space (65) for filtering the process gas as it flows therethrough, and an outlet (70) for flow of cleaned process gas out of the interior space (65) of the system. The subject fabric filter bag (50) and cage (10) system provides about an additional 14% filter material per bag as compared to like sized round filter bags, thereby effectively reducing the size of bag house (66) required to achieve a particular air to cloth (A/C) ratio. Reducing the size of the bag house (66) required to achieve a particular A/C ratio significantly reduces capital costs typically associated therewith.

Abstract: The present invention is a mobile air contaminant control system that includes a filter assembly enclosed by a mobile outer chamber. The filter assembly is tapered to create a large volume air way downstream from the filter assembly that enables more even air flow and filter loading. One or more exhaust fans pull the air through the filter assembly and exhaust it to the exterior of the chamber. The system is functionally attached to an exterior structure having at least one air intake and housing a work piece. As airborne contaminants are generated from the work piece(s), the control system exhausts them from the exterior structure through the filter assembly and into the external environment.

Abstract: An instrument gas conditioning system is provided. The system includes filtering, and optionally drying, a gas stream to obtain a filtered, and optionally dried, gas stream. The filtered, and optionally dried, gas stream is heated in a heater and then regulated through a regulator. The filtered, heated, regulated, and, optionally dried, gas stream may be used as instrumentation gas.

Abstract: A filter media product and method of making the same wherein the filter media is pleatable and has at least one support scrim comprised of a melt bonded non-woven material or a fuse bonded non-woven material bonded to a layer of expanded polytetrafluoroethylene. The filter media may have a single support scrim with one or more layers and optionally may have a support scrim on both an upstream and downstream surface where both or neither support scrim is multilayered. The filter media may have an efficiency greater than, equal to, or less than HEPA.

Abstract: The present invention relates to a particle filter and a method for operating a particle filter. The particle filter includes at least one filter portion forming an open filter system and also a heatable particle collecting element which is arranged adjacently to this filter portion and comprises a material having temperature-dependent electrical resistance. The method for operating the particle filter includes heating the particle collecting element and measuring the electrical resistance of the particle collecting element to determine whether to regenerate the particle filter.

Abstract: A dual stage coalescer includes a separator in a separator chamber separating gas and liquid by inertial impaction, and a coalescer filter element in a coalescer chamber separating gas and liquid by coalescence. A transfer tube extends between the separator chamber and a downstream subchamber in the coalescer chamber at the downstream face of the coalescer filter element, and supplies pre-separated liquid from the separator chamber through the transfer tube to the noted downstream subchamber as driven by pressure differential between the separator chamber and the downstream subchamber, to eliminate a dedicated housing drain outlet from the separator chamber. The coalescer may provide a crankcase ventilation filter for an internal combustion engine having blowby gas containing an air-oil mixture.

Abstract: An emission reduction device which may be removably affixed to a diesel engine's exhaust system. The device comprises an outer casing which may be divided into a lower portion and an upper portion, the lower portion of which is removably attachable to the exhaust system of a diesel engine; a carcass for holding a bobbin wherein the carcass is attached to the lower portion of the outer casing at the point where the exhaust enters the outer casing and the carcass has a beveled opening in a diagonal line in its proximal part and a bobbin positioned in its distal part; one or more fibrous blanket cylinders; and a guide for arranging and securing the one or more fibrous blanket cylinders within the outer casing. The fibrous blanket cylinders may be wrapped in a wire mesh. In an alternative embodiment, a second fibrous blanket formed into a cone with the larger diameter of the cone positioned proximally may be removably inserted in the carcass.

Abstract: Process for purifying and/or regenerating gases, in which the gas to be treated is fed to at least one layer of adjacently arranged prismatic honeycomb bodies (1) made of a ceramic material, which honeycomb bodies are provided with a plurality of channels (1?) which are parallel to one another and terminate in the end faces of the honeycomb bodies and through which the gas to be treated flows. The honeycomb bodies (1) are arranged in the layer at a predetermined lateral distance therebetween, which is fixed by two spacers (2) applied at two adjoining honeycomb body side walls (1?).

Abstract: A honeycomb structured body of the present invention is a honeycomb structured body in which a plurality of porous ceramic members are combined with one another through an adhesive layer, each of the porous ceramic members having a plurality of cells which are allowed to penetrate in a longitudinal direction with a wall portion therebetween and either one end of which is sealed, with a catalyst supporting layer being adhered to the wall portion, wherein, supposing that the rate of the pore volume of pores having a pore diameter of 10 ?m or less to the entire pore volume of the porous ceramic member is X1 (%), the porosity is Y1 (%) and the weight of the catalyst supporting layer is Z1 (g/l), these X1, Y1 and Z1 are allowed to satisfy the following expressions (1) and (2): X1?20?Z1/10??(1), and Y1?35+7Z1/40??(2) (where about 20?Z1?about 150).

Abstract: The present invention relates to iodinated resins. It relates in particular to a process for preparing a polyiodide-resin wherein an anion exchange resin is contacted with a material capable of donating a member absorbable by the resin so as to convert the resin to the polyiodide-resin. The absorbable member is selected from the group consisting of I.sub.2 and polyiodide ion having a valence of ?1. In the process, conversion of the anion exchange resin to the polyiodide-resin is effected at elevated temperate and/or elevated pressure, the elevated temperature being about 100.degree. C. or higher, the elevated pressure being greater than atmospheric pressure. The present invention also relates to a substance comprising an iodine (impregnated) resin as produced by the above process.

Abstract: A fabric filter (1) has at least a first compartment (2) and a second compartment (4). A hopper (42) is adapted for fluidisation of dust collected in the compartments (2, 4) to form a bed (52) of fluidised dust. A partition wall (62) is located between the compartments (2, 4) to separate them from each other. A passage (68) is formed at a lower end (66) of the partition wall (62) such that fluidised dust may pass through said passage (68). The partition wall (62) is arranged to extend into the bed (52) of fluidised dust for forming a seal (74) even when one of the compartments (2, 4) has been shut off. When shutting off a compartment (4) the inlets and outlets to that compartment (4) are closed and the dust in the hopper (42) is fluidised to provide a seal (74) between the compartments (2, 4).

Abstract: A modular filtration column for use with a ductless fumehood, the modular filtration column comprising: a plurality of cassettes having an identical footprint; at least one of the cassettes being configured to move air through the modular filtration column; at least one of the cassettes being configured to filter air moving through the modular filtration column; and at least one seal mechanism for providing an air-tight seal between adjacent cassettes, wherein the at least one seal mechanism is configured to form an air-tight seal devoid of any external compressive force.

Abstract: Combining a HEPA air filtration system and a central vacuum system obtains a synergistic effect of cleaning air particulates in a room. The particulate count of the current invention provides an unexpectedly low result that can at best be described as synergistic.

Abstract: A filtering system for monitoring fluid emissions from a process includes a plurality of filter assembly sections arranged in a parallel fluid flow manner with respect to each other so as to selectively receive a sample fluid (e.g., a sample gas) entering at an inlet of the system. Each filter assembly section includes a filter unit to filter particulate materials from a fluid flowing through the filter, first and second valves disposed at upstream and downstream locations of the filter unit, and a blowback flow path configured to selectively direct a cleaning fluid through the filter unit in a direction that opposes a direction in which the sample fluid flows through the filter unit. Each filter assembly section can be selectively isolated from other portions of the system so as to prevent the sample fluid from flowing through the filter assembly section while allowing a cleaning fluid to be delivered through the blowback flow path of the filter assembly section.

Abstract: A filter including a filter housing with an essentially horizontal partition wall that divides the filter housing into a clean-air chamber and a dust chamber. The partition wall is provided with a number of apertures in which a number of filter bags are provided that are secured to the partition wall and extend down into the dust chamber. The filter is provided with an inlet portion in open communication with the dust chamber in a level that is above a lowermost end of the filter bags, wherein the inlet portion is configured for introducing a dust-containing flow of air into the dust chamber, from there it can be sucked through the filter bags and up into the clean-air chamber, from where the filtered air is discharged through a clean air outlet. A number of diffuser elements are arranged in the inlet portion outside the filter housing.

Abstract: A filter includes at least two different adsorptive media. First, chemisorptive media, which is porous and includes an acidic functional group, is used to remove molecular bases, including ammonia, organic amines, imides and aminoalchols, from the atmosphere used in semiconductor fabrication and other processes that require uncontaminated gaseous environments of high quality. Second, physisorptive media is able to adsorb condensable contaminants, particularly those having a boiling point greater than 150 degrees C. The physisorptive media can include untreated, activated carbon.

Abstract: A fabric filter (barrier filter) with an inlet design for high particle load that allows for individual compartments in a row to be isolated by closure of a sloped inlet damper by which the sloped design allows particulate during damper closure to flow to the opposing compartment hopper preventing damper failure from the accumulated weight of the particulate load.

Abstract: A fluid handling device having a support frame and a plurality of filter frames attached thereto. Each of the filter frames has an outer frame member that removably secures a filter; the filters being either a planar filter, pocket filter, or multiple pocket filter. The various filters can be arranged to correlate the change-out schedule of all of the filters across the fluid flow area. The filters with the highest particulate capacity can be arranged to be in the zone of the fluid flow area with the highest particulate concentration. The filters are easily constructed from a single piece of filtration media and collapsible to save space when storing or shipping.

Abstract: The present invention is a mobile air contaminant control system that includes a filter assembly enclosed by a mobile outer chamber. The filter assembly is tapered to create a large volume air way downstream from the filter assembly that enables more even air flow and filter loading. One or more exhaust fans pull the air through the filter assembly and exhaust it to the exterior of the chamber. The system is functionally attached to an exterior structure having at least one air intake and housing a work piece. As airborne contaminants are generated from the work piece(s), the control system exhausts them from the exterior structure through the filter assembly and into the external environment.

Abstract: A modular ductwork assembly decontaminates an air stream circulating within an heating, ventilation and air conditioning (HVAC) system. The assembly includes (a) an ionizing module for removing particulates from the air stream, (b) a sterilization module for neutralizing airborne pathogens present in the air stream, (c) an ozone treatment module for neutralizing odoriferous constituents or volatile organic compounds (VOCs) present in the air stream, optionally (d) baffles for slowing and disrupting the flow rate and promoting turbulence in the air stream traveling through the modules and optionally (e) a fan module for directing a treated air stream. Each of the modules is arranged substantially adjacent to at least one of the other modules.

Abstract: A modular lint collection system for a fabric dryer, comprising a lint collection frame having a plurality of lint screen retaining members associated therewith, and a plurality of lint collection screens connected to respective lint screen retaining members and arranged in a zigzag pattern. The lint collection screens are oriented in respective vertical planes with adjacent screens lying in intersecting relation to one another, such that the air flow being drawn through the dryer generally impinges the screens at an oblique angle.

Abstract: An air filtration unit for use in a work environment includes a housing disposed with an air filtration system and light source. The housing includes a handle and corner caps to prevent damage and provide stability. The air filtration system draws air into the housing, via a blower, through a first and second inlet gate, the air is at least partially filtered by a first and second filter assembly, which provide a two stage filtering, and then the at least partially filtered air is blown through an exhaust conduit back out into the work environment.

Abstract: The invention provides a system and method comprising an apparatus for removing contaminants from a gas in a semiconductor processing device, which can include a filter unit having at least two parallel filter stages located therein. The filter stages are designed to remove a least a portion of the contaminants present in the gas flowing through them. The apparatus can also include a flow controller for distributing the gas flow among the filter stages. In one embodiment, the controller may consist of a diffuser plate. The invention also provides a sampling tube orifice for gas flow control in a system or method of the invention. In another embodiment, an apparatus for removing contaminants from a gas in a clean room comprises a filter unit having at least two parallel filter stages, which are used to remove a portion of the contaminants in the gas as it passes through the apparatus.

Abstract: Methods of separating fluids using capillary forces and/or improved conditions for are disclosed. The improved methods may include control of the ratio of gas and liquid Reynolds numbers relative to the Suratman number. Also disclosed are wick-containing, laminated devices that are capable of separating fluids.

Abstract: Converting machines give rise to polluted air which must be removed with the aid of fans and filters. The invention aims at removal of the polluted air in such a way that the servicing interval is greatly extended by the use of a filter unit having a number of part-filters arranged one after the other and formed of pleated fiber mats, the various mats having different filtering properties.

Abstract: A pipe trap comprising a body, a disc filter, a pipe and a plurality of mesh filter suitable for filtering gases is provided. The pipe trap body has a gas inlet and a gas outlet. The disc filter and the mesh filters are enclosed inside the pipe trap body. One end of the pipe connects with the disc filter and the other end of the pipe connects with the gas outlet. The mesh filters are enclosed inside the pipe. Using a multi-stage filtering method, liquid matter separates out first and then gaseous particles are filtered according to the particle size so that the pipe trap has a high filtering efficiency.

Abstract: A method for cleaning a filter having Z-media includes providing a filter having Z-media and cleaning the media construction by directing a pulse of compressed gas into the media construction through the downstream flow face. Filter elements useable with such methods include elements made of Z-media. An example system utilizing the method includes a gas turbine air intake system.

Abstract: This invention relates to the field of connectors used to connect gas sources to apparatus for the administration or other use of gas or mixtures of gases, and more specifically to filters used to remove biological contaminants that might be colonized with the pressurized containers used in gas administration for respiratory support of a user or patient or other applications where biological contamination is not desired.

Abstract: The invention relates to a filter module having a module housing and at least one filter element. The filter module has at least one inlet opening, at least one filtrate outlet and a module housing having at least one joint line.

Abstract: A filter element, and filter apparatus, include a filter pack, a seal member, and a seal support frame operatively connecting the seal member to the filter pack. The seal support frame includes an annular extension, which is preferably canted at an oblique angle to a longitudinal axis, for supporting the seal member. The seal support frame also preferably includes a first end thereof including the annular extension, and a second end thereof spaced from the first end thereof along the longitudinal axis, with the first and second ends of the seal support frame joined by a hub of the outer peripheral sidewall of the seal support frame to define a cavity within the seal support frame for receiving the filter pack. The first and second ends of the seal support frame, and the filter pack are preferably joined and sealed to one another by a single bead of adhesive.

Abstract: A structure and method of removing semi-rigid debris and demisting gas for use primarily in surface maintenance or conditioning machines, Demisting is accomplished by, a combination techniques including rapid pressure reduction and removal of semi rigid debris is accomplished by forcing the debris through a path with curvatures to great for the debris to follow.

Abstract: Methods and apparatuses for mounting a filtration housing for solid filtration media. One aspect of the invention includes a method for mounting an air circulation component to an air circulation system, wherein the air circulation component includes a center of gravity. The method includes providing a notch associated with an air circulation component wherein the notch includes a contact surface; providing a guide associated with the air circulation system, wherein the guide includes a load bearing surface; and positioning the air circulation component with respect to the air circulation system such that a portion of the contact surface is adjacent to a portion of the load bearing surface, wherein the adjacent surfaces comprise a contact angle that is substantially coplanar with a center of gravity of the air circulation component, and wherein a portion of the weight of the air circulation component transferred between the surfaces causes a sealing pressure against a portion of the air circulation system.

Abstract: A smoke evacuating system for use during surgical procedures, particularly minimally invasive procedures involving the use of a laser or cautery at a surgical site having an associated higher than ambient pressure, wherein the system includes a filter with a site side and an outlet side and a fluid conduit extending between the surgical site and the filter. The filter includes a filter media and a housing substantially surrounding the filter media with a space between the filter media and the housing to collect condensed vapor. The filter exhibits low resistance or a low pressure drop and resists fluid flow, whereby the higher than ambient pressure is not substantially diminished and generates a fluid flow in the fluid flow path tending to carry smoke to and through the filter.

Abstract: A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a second end portion adjacent to the first filter element second end. Selected ones of the flutes are open at the first end portion and closed at the second end portion; and selected ones of the flutes are closed at the first end portion and open at the second end portion. A sleeve member secured to and circumscribing the first filter element. The sleeve member is oriented relative the first filter element to extend at least 30% of the axial length of the first filter element. A seal member pressure flange at least partially circumscribes the sleeve member. The filter arrangement is particularly useful for gas turbine systems. Methods for operating and servicing filter arrangements preferably utilize constructions herein.

Abstract: A filter assembly is disclosed for use in connection with the filtration of products transported via pipelines, including high pressure gas pipelines. The disclosed filter assembly is comprised of a plurality of filter modules, a series of valves, inlet and outlet ports, connective piping, and spool pieces. The filter assembly will temporarily redirect flow from the pipeline, through one or more filter assemblies, and back into the original pipeline a short distance downstream from the original takeout point. If flanged connections are not readily available for a particular section of pipeline, the filter assembly can be connected to virtually any section of pipe through “hot tapping” technology, which allows a valve to be placed on an active and pressurized section of pipeline.

Abstract: A filter assembly having a plurality, preferably at least substantially vertically mounted, longitudinal elongated filter elements that are suitable for separating fluid from solid particles, having an open upper end sealed into a sealing device and a closed bottom end attached to a filter support that is mounted on a filter grid, in which the filter grid has a plurality of grid elements together forming a grid, wherein at least a portion of the cross-section of the grid elements between two adjacent filter elements is pointiform. The invention further pertains to a filter grid and a filter vessel containing at least one filter assembly.

Abstract: A method of regenerating at least one diesel particle filter, in which exhaust gas is introduced through a supply line into the at least one diesel particle filter and is discharged from it through a discharge line, while heating of the exhaust gas flowing through the at least one diesel particle filter takes place, a closed circulating air circuit being created through which exhaust gas emerging from the at least one diesel particle filter may be introduced back into the latter.

Abstract: An adapter for use with a low volume PUF sampler is described. The adapter is affixed over the open end of a PUF (polyurethane foam) sample cartridge. Sample tubing is affixed to an aperture in the adapter, and the free end of the sample tubing is then positioned at a desired sample location such as within an aircraft interior. As a vacuum is applied to the PUF cartridge, the adapter allows air collected at the sample point to pass through the tubing and through the interior of the PUF cartridge while preventing air surrounding the PUF cartridge from being drawn into the PUF cartridge except through the sample tubing. In this manner the sample point of a desired air sample can be selected at a point remote from the PUF cartridge. Additionally, use of multiple PUF cartridges and adapters allows the simultaneous collection of separate air samples.

Abstract: An air filtration unit for use in a work environment includes a housing disposed with an air filtration system and light source. The housing includes a handle and corner caps to prevent damage and provide stability. The air filtration system draws air into the housing, via a blower, through a first and second inlet gate, the air is at least partially filtered by a first and second filter assembly, which provide a two stage filtering, and then the at least partially filtered air is blown through an exhaust conduit back out into the work environment.

Abstract: A vacuum system is enclosed in a housing having two vertically spaced chambers, the lower one enclosing the vacuum generating motor means and the upper chamber defining the vacuum chamber and having therein prefilter and filter means as well as at least two vacuum ports to which vacuum wands are selectively attached, each port being sealed when not in use.

Abstract: A coalescing assembly for coalescing entrained oil from a high temperature, high velocity gas stream comprises a coalescing element of compacted high temperature polyamide fibers, such as those available under the trademark Nomex®, rigidly held by concentric cylindrical support structures of a dense fibrous material such as stainless steel. The coalescing assembly forms a component of an oil coalescer having a unique hole configuration in its outer shell to prevent coalesced oil from being re-entrained into the gas stream. The oil coalescer is a component of an oil separator for use in aircraft operational environments and features high durability and longevity of 10 years or more.