Abstract: A fuel vapor storage canister having a screen module between carbon granules in the canister and a purge port of the canister. The screen module includes a module body defining a plenum, a flat plastic foam screen seated on an uninterrupted edge of a raised boss on the module body around the plenum, and a retainer clamped to the module body over the flat foam screen. A tubular stem on the module body plugs into a socket in the storage canister. An interference fit between the tubular stem and the socket prevents migration of carbon granules between the socket and the tubular stem. The foam screen is exposed to the carbon bed chamber through a window in a planar side of the retainer which planar side, in a seated position of the retainer on the module body, cooperates with the uninterrupted edge of the raised boss in compressing a segment of the foam screen to define a seal around the window.

Abstract: A fuel vapor storage canister having a screen assembly between a mass of carbon granules in the storage canister and a purge port of the storage canister. The fuel vapor storage canister includes a cup-shaped plastic body defining a carbon bed chamber and a plenum in the canister body covered by the screen assembly. The screen assembly includes a pair of concentric cylindrical bosses around the plenum, a plastic foam screen over the plenum seated on a circular edge of each of the concentric cylindrical bosses, and a retainer having a plurality of flexible barbs and flexible reinforcements resiliently biased against opposite sides of the outermost one of the cylindrical bosses. Concentric circular segments of the plastic foam screen are compressed tightly between an annular planar side of the retainer and each of the circular edges of the concentric cylindrical bosses to positively prevent migration of carbon granules around the foam screen.

Abstract: A hollow body with an internal supporting frame (10) which is connected to a housing (14) at at least two contact points. The housing and the supporting frame are made of synthetic resin material with the housing, which is produced by blow molding, enclosing the supporting frame.

Abstract: An apparatus for purifying feed air by adsorption of water vapor and carbon dioxide therefrom includes a purification vessel in which are defined vertically arrange chambers and another purification vessel in which are defined vertically arranged chambers. None of the chambers is in a series flow relationship with any of the others. Each chamber contains a bed of one or more adsorbents which is able to adsorb water vapor and carbon dioxide from the feed air and which forms a reversible part of a gas flow path extending between locations external of the vessels. Valves are associated with the vessel and are operable to permit during a first adsorption period of time simultaneous flows of air to to purified through at least two of the chambers and during a second regeneration period of time simultaneous reverse flows of regeneration gas through the same chambers.

Abstract: A canister which can control the diffusion of evaporated fuel to surely prevent the evaporated fuel from blowing through into the atmosphere has a main chamber having therein a first adsorbent layer for adsorbing evaporated fuel and including an evaporated fuel lead-in port and a purge port, a subchamber having therein a second adsorbent layer for adsorbing evaporated fuel and including an atmospheric air lead-in port, and an air chamber communicating with the main chamber and the subchamber are provided in a casing of a canister. The air chamber is divided into three parts: a first chamber at the side of the main chamber, a second chamber at the side of the subchamber and a third chamber between the first and second chambers. A nonlinear communication passage is formed inside of the third chamber by dividing the third chamber with a partition wall having its both ends opened to the first chamber and the second chamber respectively.

Abstract: This invention concerns the application of a biological air filter to neutralize noxious gases produced and emanating from swine production facilities. The treatment is accomplished by passing air through modular units; the modular units are inoculated with organisms selected for ability to neutralize noxious gases.

Abstract: A desiccant cartridge including a molded plastic shell having an outer cylindrical portion and an inner tubular portion connected by a plurality of ribs which extend therebetween, a molded plastic end cover grid secured in each of the opposite ends of the molded plastic shell and being attached to both the outer cylindrical portion and the inner tubular portion, annular porous felt members secured to the inner sides of the molded plastic end cover grids, and desiccant in the annular space between the outer cylindrical portion of the shell and the inner tubular portion thereof.

Abstract: A container for particulate desiccant includes a cup and a cap. The cup includes spaced inner and outer wall portions connected by a transverse web portion to define a chamber having an opening for receiving the desiccant. The chamber side of the transverse web includes peripheral and central flanges, or energy directors, to which a first ply of permeable lining material is ultrasonically bonded. The cap is designed for receipt in the chamber to cover the opening. In addition, the cap has a hole for receiving the inner wall portion of the cup, and the chamber side of the cap includes peripheral and central flanges, or energy directors, to which a second ply of permeable lining material is ultrasonically bonded. The inner wall portion includes a beveled inner end surface which tapers radially inwardly in a direction toward the transverse web portion to facilitate insertion of a canister pipe into the inner wall portion.

Abstract: The gas from combustion or gasification of fossil fuel contains flyash and other particulate. The flyash is separated from the gas in a plurality of standleg moving granular-bed filter modules. Each module includes a dipleg through which the bed media flows into the standleg. The bed media forms a first filter bed having an upper mass having a first frusto-conical surface in a frusto-conical member at the entrance to the standleg and a lower mass having a second frusto-conical surface of substantially greater area than the first surface after it passes through the standleg. A second filter media bed may be formed above the first filter media bed. The gas is fed tangentially into the module above the first surface. The flyash is captured on the first frusto-conical surface and within the bed mass. The processed gas flows out through the second frusto-conical surface and then through the second filter bed, if present.

Abstract: An improved apparatus and process is provided for scrubbing sulphur oxide gas from combustion flue gas with wet limestone particles as a reactive scrubbing agent. The process is carried out in a moving bed reactor having louvered inlet and outlet sides which permit the flue gas to pass through the reactor while the limestone particles move downward. The flue gas may be flowed through the moving bed reactor at a high velocity to permit scrubbing of large volumes of gas in a thorough and efficient manner. The high velocity of flue gas passing through the reactor causes some of the scrubbing particles to be ejected from the outlet side of the reactor. Problems associated with the ejection of the scrubbing particles are avoided by providing a slot alongside the outlet side of the reactor. The slot is sized so that the flue gas passing therethrough will have insufficient velocity to entrain the ejected scrubbing particles therein.

Abstract: A fuel vapor treatment device or canister for a vehicle evaporative emission control system has a casing filled with a fuel vapor absorbent material in its chamber. A relay pipe projects outwardly from one end the casing and communicates with the chamber. A liquid-fuel separator having a cavity is sealingly mounted to the one end of the casing so that the relay pipe extends into the cavity. Inlet and outlet pipes, which communicate with the cavity and fuel vapor, are formed in the separator. A fuel vapor outflow passage is formed inside the separator and communicates with the outlet pipe. The suction pipe has a reduced size section with an orifice. A liquid-fuel suction pipe, which communicates with the outflow passage through the orifice, extends perpendicularly downwardly from the outflow passage. The suction pipe extends from the orifice to the area where the liquid-fuel collects.

Abstract: A canister includes a partition wall which extends toward the lid member with one end thereof connected to the end wall and opposite sides are connected to an inner surface of the casing body. First and second adsorbent layers, formed by an adsorbent, are retained between first and second filters and a third filter, respectively. The first and second filters are fixedly disposed on opposite sides of the partition wall to define first and second chambers between the first and second filters and the end wall, respectively. The third filter is placed and carried on an inner surface of a support plate which is fitted in the casing body and which has a large number of communication bores. The support plate and a lid member are biased by a spring in a direction to compress the first and second adsorbent layers.

Abstract: A method for producing an activated carbon which comprises burning waste tires containing metal cord at 700.degree.-800.degree. C. in the presence of oxygen and in the presence of CO.sub.2 and water vapor and at a relative humidity of at least 60%, and recovering the activated carbon, wherein the activated carbon comprises carbon microcrystals irregularly arranged and difficulty graphitizable carbon, the difficulty graphitizable carbon comprising crosslinking lattices in the gaps among carbon microcrystals and the activated carbon having pencil hardness of from B to 6B, pore size of 100-400 .ANG., specific surface area of 150-500 m.sup.2 /g, pore volume of 1.3-5.0 ml/g and CEC of 8-13.

Abstract: A fuel vapor treatment device adapted to prevent evaporative emission from an automotive vehicle has a casing formed of a plastic and defines therein a space filled with a fuel vapor absorbent. An end wall is sealingly connected to a first end of the casing and provided with a first pipe through which fuel vapor is charged to the space, and a second pipe through which the fuel vapor within the space is purged. A cover plate is sealingly connected to a second end of the casing. A partition member is integral with the casing and disposed within the space of the casing to define first and second chambers. The partition member includes first and second partition walls that are parallel with each other and form a predetermined space therebetween. The partition member further includes a first lateral wall to connect first ends of the respective first and second partition walls, and a second lateral wall to connect second ends of the respective first and second partition walls.

Abstract: A device for removing odors and undesirable gases from ambient air comprising an absorbent material enclosed in a tubular shaped container designed to encourage flow of the ambient gases through the container and over and through the absorbent material. In particular, the container includes a plurality of rising channels within the wall of the container, each channel having an opening to the interior space in the vessel, the interior space holding the absorbent material.

Abstract: An extremely compact, energy efficient air purifier for incinerating volatile organic chemical contaminants, and airborne organic particulates comprises a cylindrical ceramic heat transfer/storage element having many substantially identical axially parallel flow passages with very large surface area per mass, and a rotating guide for guiding the inlet air flow to a preset radial segment of the ceramic element. The air flow exiting from the preset radial segment is directed to the remaining segment in the opposite direction. The air flow exiting from the remaining segment is exhausted from the air purifier. Included is a pre-heater for heating the ceramic element at start up, and maintaining the air flow at a stable incineration temperature.

Abstract: A fuel vapor capturing canister includes a casing formed into the shape of a cylinder and accommodating an adsorbent material and a plurality of partition plates each formed of an impermeable material. The adsorbent material accommodated in the casing has one of two faces communicating with the atmosphere and the other face communicating both with a fuel storage system and an intake system of an engine. The partition plates are disposed in the casing so as to divide the adsorbent material into a plurality of layers. The partition plates has respective communicating holes formed so as not to lie one above another. This arrangement of the partition plates lengthens a path of fuel vapor passing through the activated carbon layers. Since the distance of flow of the fuel vapor in contact with the adsorbent material is thus increased, the fuel component adsorbing efficiency can be improved.

Abstract: A fuel vapor capturing canister includes a casing formed into the shape of a cylinder and accommodating an adsorbent material. A partition member divides the activated carbon into lower and upper layers. The partition member includes a cross rib and upper and lower walls sandwiching the rib. One of four pieces of the cross rib is connected to the inner peripheral wall of the partition member. Two chambers located at both sides of the piece connected to the inner peripheral wall of the partition member communicate with each other through a communicating path defined between the other pieces of the rib and the inner peripheral wall of the partition member. One of the two chambers has in its underside openings communicating with the lower activated carbon layer while the other chamber has in its top openings communicating with the upper activated carbon layer. The fuel vapor flows between the two layers of activated carbon.

Abstract: A non-uniform graded ball adsorbent bed support is employed in the head section of an adsorption vessel to achieve a uniform flow of gas to the adsorbent bed. The open areas of an inlet gas distributor are also varied to channel gas toward the edge portion of the vessel head to enhance the uniform flow of gas to the adsorbent bed.

Abstract: A process and apparatus for open cycle desiccant cooling wherein the process stream and regeneration stream are divided into a plurality of radial stream segments by non-parallel partitions forming unequal face segments in the desiccant wheel and the heat wheel for the same stream segment. The unequal face segments in the desiccant wheel and the heat wheel provide differing temperature profiles at the face of each wheel and allow obtaining desired temperature profiles for heat exchange and moisture adsorption. The process of this invention results in reduction of the radial speed of the heat wheel to less than 4 providing high effectiveness of the heat wheel increasing the capacity and the COP of the system.

Abstract: A desulfurizing and denitrating apparatus wherein an inner space of a tower body, which has an introduction port for a gas to be processed and a processed gas discharge port formed respectively in opposite side walls, is partitioned in a direction from the side wall having the processed gas introduction port toward the side wall having the processed gas discharge port by an inlet louver, a perforated plate and an outlet louver all extending vertically parallel to each other, a constant-rate discharging device for setting a moving speed of a carbon-base adsorbent in a small chamber defined between the inlet louver and the perforated plate and a constant-rate discharging device for setting a moving speed of a carbon-base adsorbent in a large chamber defined between the perforated plate and the outlet louver are provided, the moving speed of the carbon-base adsorbent in the small chamber is set to be 2 to 4 times greater than an average moving speed, and the distance from the inlet louver to the perforated plate

Abstract: An apparatus for removing harmful objects comprising a cylindrical casing having an inlet and an outlet, a fill-up section for a granular or lump treating material for adsorbing or resolving the harmful objects. An inlet obstructive plate provided within the casing and spaced from the inlet for covering the area corresponding to the inlet from the inside of the casing. A surrounding obstructive plate provided in at least an upper portion of the fill-up section among the upper portion, a middle portion between the top and bottom and a lower portion thereof to project into the fill-up section from the interior of the casing and a supporting plate for supporting the treating material.

Abstract: A filtering device well adapted for filtering moisture from a natural gas stream is formed by a tubular housing containing a bed of particulate material, such as gravel. In one embodiment, particulate material is positioned in an upper portion of the housing and a liquid reservoir is provided in a lower portion of the housing. In another embodiment, the housing is packed full of particulate material and the liquid reservoir is provided by a boot depending from the housing.

Abstract: A manufacture and method by which particulate in the polluted ambient air is collected and retained, thereby purifying the ambient air. The manufacture is mounted amid a vehicle (17, 38, etc.) at a location always accessible to the ambient air in the atmosphere. Relative motion between vehicle and the polluted ambient air (37, 65) provides confrontation of the polluted air with a confronting receptacle (14) in which loosely gathered together pellets (13) are gathered together. Receptacle (14) comprises wire mesh (15) having interstices (31) smaller than the size of the pellets (13). As relative motion occurs between vehicle (17) and polluted air (37, 65), receptacle (14) confronts the polluted air, its pellets (13) entrapping particulate in the polluted ambient air, thereby purifying the ambient air and thereafter it being directly returned to the ambient air in the atmosphere. Alternative embodiments (43, 55) provide cages (26) into which receptacles (14) with their pellets (13) are put.

Abstract: An activated carbon filter is provided for venting a fuel tank. The activated carbon filter consists of a housing which accommodates activated carbon packets. Via lines, the housing is connected, on the one hand, by way of a first connection with the fuel tank, and on the other hand, by way of a second connection with the intake pipe, particularly that of a combustion engine. A third connection connects the housing with the atmosphere. The housing has a first partition which extends between the connection for the atmosphere and the connection for the tank. At least one other partition is provided which forms at least one other chamber. Each of the chambers is filled with activated carbon.

Abstract: A method and apparatus are provided for use in the delivery of an inhalation anesthetic to a patient while employing a closed loop or re-breather gas recirculation system. The method and apparatus control the system temperature to minimize heat buildup, including heat buildup resulting from an exothermic reaction between a patient's exhaled breath and a scrubbing substance that removes a selected constituent from the patient's exhaled breath. The apparatus includes an enclosure containing a scrubbing substance. The enclosure defines an influent opening for admitting the exhaled breath along a first path into the scrubbing substance and defines an effluent opening through which gases can be discharged from the enclosure. The apparatus also includes a second path adjacent the first path between inlet and outlet openings whereby a coolant fluid can flow along the second path to remove heat from the interior of the enclosure.

Abstract: A carbon-filled fuel vapor filter system, including a polymer housing, the polymer housing including a hose inlet, a hose outlet, and a formed block of carbon pellets or granules with a polymer binding between the carbon pellets or granules contained within the fuel filter housing.

Abstract: A compact fixed-bed catalytic reactor containing a plurality of staggered partitioning plates inside a reactor vessel to form a folded reaction path. The reactor is substantially rectangular in shape and each of the partitioning plates is held inside the reactor by a frictional force between the partitioning plate and the inner wall of the reactor vessel while one side thereof, being shorter than the width of a corrsponding inner side the reactor, forms an opening allowing the passage of reactant therethrough. The partitioning plates contain a plurality of fingers to further secure the same in place and prevent horizontal movement thereof. The present invention allows a box-like catalytic reactor to provide the advantages of a fixed-bed tubular reactor, while maintaining a desirable spacial compactness and lowering the construction cost.

Abstract: A fluid-permeable wall component of a sandwich-type construction has a slotted hole screen with substantially parallel extending vertical slot-limiting elements. A stabilizing grate is connected to the slot-limiting elements and includes connecting rods extending transverse to the slot-limiting elements and a louver-type construction with slats that extend transverse to the slot-limiting elements. The wall component is employed in an adsorption medium reactor of the fluidized bed type as a dividing wall for dividing the treatment chamber into compartments or an outer limiting wall. It retains particles of the adsorption medium within the divided compartments of the treatment chamber without obstructing the transverse fluid flow and allows separate removal of adsorption medium from either compartment.

Abstract: A scrubber having a housing and a pair of replaceable and removable perforated casings within the housing. Preferably, the casings are cylindrical and concentric forming an inner corespace inside the innermost casing and an annular fillspace between the casings. A central, conical feeder at the top of the housing permits uniform distribution of treatment media into the annular fillspace. Circulation of exhaust gas through the scrubber is provided by a removable inlet pipe and removable outlet pipe. Contaminant-laden exhaust gas that is fed into the core, percolates through the treatment media and is discharged out through the housing. The stream of exhaust gas can be reversed without any modification to the internal or external parts of the scrubber. A plurality of removable horizontally extending cylindrical pipes secured to the lower end of the housing are used to remove the exhausted treatment media without disturbing surrounding piping through discharge ports secured to the lower end of the housing.

Abstract: A spiral-wound adsorber module is claimed for the removal of VOCs from fluid streams. The apparatus comprises a spirally adsorbent bed supported within a cylinder to provide a compact, longer adsorbent life alternative for a thermal swing adsorption process.

Abstract: An air dryer for compressed air braking systems includes a desiccant canister which is provided with a double helix insert which cooperates with the walls of the canister to define a pair of intertwined, serpentine, pneumatically isolated flow paths. The flow paths extend through the canister between the end walls and are filled with a desiccant material. A single center line valve mechanism is provided to switch between the flow paths so that one of the flow paths is purged at the same time that the other flow path is pressurized.