Abstract: The present invention is a portable filter fan. A highly efficient and inexpensive air filtering device is made from a portable box fan with a pleated sheet o micron particle filter installed externally in channels on the inlet side of the fan housing. Activated charcoal used for removing odors and volatile organic compounds from the air is prevented from egress by a second similar filter mounted externally in channels on the outlet side of the fan housing. A low-cost fan filter sitting at floor level circulates the air and cleans the air more efficiently than many other filters placed in ceiling or attic areas. Gravity pulls the floating particles in the air downward toward the floor, and the new portable air filtering box fan draws and holds the particles on the filter.

Abstract: A water dispenser has an apparatus for removing water from the air and an apparatus for treating the water to provide a consumer with potable water.

Abstract: A filter apparatus 20 is connected to an outlet portion of a canister mounted on a fuel supply system for a vehicle. A housing 21 and a filter element 30 are provided. The housing 21 has a connection-opening portion 25 connected to the outlet portion and atmospheric release opening portion 26 communicating with the atmosphere. The filter element 30 is received in the housing 21 so that one end of a hollow portion 31a passing through the center of a filter body 31 is connected to the connection opening portion 25 from the inner side of the housing 21. The hollow portion 31a of the filter element 30 is utilized as a part of a passage for introducing fluid, which has been introduced from the connection opening portion 25 into the housing 21, into the atmospheric release opening portion 26.

Abstract: Rather than providing replaceable filter elements in fixed permanent housings which require replacement by plastic bagging techniques, easily disposable and incineratable filter modules are removed and replaced as integral units while providing complete protection against contaminants from filtered exhaust air from enclosures containing airborne or potentially airborne hazardous materials, such as biological safety cabinets, fume hoods, cages for contaminated animals, nuclear facilities, etc. The disposable filter modules are removable and replaceable by a technique in which the modules are maintained under negative pressure via a filtered vacuum source at all times while the module inlets and outlets are open. Sealing of the openings is by small sheets of polyethylene film, and no bagging such as in the known "bag in, bag out" technique is required.

Abstract: An advantageous configuration of an adsorption medium in a drying plant is described. At least one cartridge containing the adsorption medium for a gas to be dried is removably disposed in a container of the drying plant. A pressure prevails between the adsorption medium and the cartridge such that the adsorption medium remains stationary in the cartridge, in particular even under changing operating and/or environmental conditions. Using the cartridge enables the adsorption medium to be changed rapidly and safely on site. In addition, the invention ensures a high quality of gas drying, in particular without the added risk of the particles being released. Different cartridges can also be used for different adsorption media and can therefore be optimized to suit the most varied of drying plants.

Abstract: A process for reducing pollutants, particularly nitrogen oxides from combustion gases during a combustion process that takes place while oxygen is supplied, includes providing oxygen needed for the combustion process by separating oxygen from a gas mixture containing oxygen and nitrogen in a two-step process including (a) enriching the gas mixture with oxygen in a first step to provide an enriched gas mixture; and (b) separating oxygen out of the enriched gas mixture in a second step, wherein, during at least one step oxygen depleted gas mixture is removed via an outlet provided with permeability means that cause the outlet to have a higher permeability for nitrogen than oxygen.

Abstract: An air dryer and reservoir assembly for providing compressed air from an air compressor (20) on a heavy motor vehicle which includes an air dryer (14) connected to receive compressed air from the air compressor (20) and a secondary reservoir (12), including an integral purge volume (34), for storing compressed air which passes through the air dryer (14), with the air dryer (14) and the secondary reservoir (12) being securely attached to a housing (16) to form an air dryer reservoir module (10). A primary reservoir (18) for storing compressed air from the air dryer (14) is located remote from the air dryer reservoir module (10). A pressure equalizing mechanism (57) is disposed between the primary reservoir (18) and the secondary reservoir (12) for keeping pressure in the two reservoirs (12,18) equal.

Abstract: The production of naphtha gas from landfill gas is preferably accomplished through a gas purification step, a catalytic conversion of methane gas to hydrogen gas, and a blending step in which various process streams are blended to produce the naphtha gas stream. The landfill gas stream is first treated through a gas purification/separation procedure to produce a substantially pure methane stream. The purified methane stream is then split into at least two portions. The first portion is fed into a hydrogen reformer and a shift reactor, where the methane gas is converted into a hydrogen-bearing stream which includes hydrogen and carbon dioxide. The second portion of the stream is preferably fed into a mixer. In the mixer, the pure methane stream, the hydrogen-bearing stream and a portion of the purified landfill gas stream are preferably blended together to form a naphtha gas stream.

Abstract: Apparatus for separating and collecting hydrogen gas. A hydrogen-permeable membrane is used in combination with a trap therefor in order to separate hydrogen gas from a gas stream containing a mixture of gases. The use of a membrane selectively permeable to hydrogen protects the trap from poisoning by other components in the gas stream by substantially preventing their reaching the trap. The combination is especially useful for tritium removal and storage since .beta.-resistant permeable membranes are now available.

Abstract: A scrubber for removing pollutants from a fluid and having an inlet for receiving the fluid and an outlet for emitting the fluid, the scrubber comprising a first scrubber coupled with the fluid intermediate the inlet and the outlet for removing a first measure of pollutants from the fluid, a second scrubber coupled with the first scrubber intermediate the inlet and the outlet, the second scrubber for removing a second measure of pollutants from the fluid, and a third scrubber coupled with the second scrubber intermediate the inlet and the outlet, the third scrubber for removing a third measure of pollutants from the fluid.

Abstract: A rooftop grease containment system for absorbing the high viscosity grease carried by the gaseous effluent generated by cooking food and released through a rooftop exhaust vent, comprising 4-8 mm hydrophobic silica particles contained within porous pads, tubes and pillows placed in different positions in proximity to the rooftop exhaust vent is disclosed.

Abstract: An evacuating kit (10) having a puncturing device (14) for evacuating aerosol cans into a drum (12), on which the puncturing device is mounted at a first bung hole (36), also includes a filter canister (16) for being coupled to a second bung hole (77) of the drum by a flexible transfer hose (20) so that the filter canister can be supported by a floor supporting the drum. The puncturing device further includes a valve at a second end (32) of a tubular wall (23) of a housing (22) of the puncturing device with a valve poppet (50) positioned beyond the second end for opening and closing a second-end opening (28) using the second end of the housing as a valve seat. The valve has a valve stem (48) mounted for linear movement in a web (44) of the housing extending across the second opening. The stem includes circumferentially spaced stem fingers (56) for contacting a pressurized container being punctured to open and close the valve poppet.

Abstract: A canister apparatus having a main body with activated carbon for absorbing fuel vapor; an air tank having a suction port and a filter for filtering harmful materials drawn through the suction port; a first guide pipe for guiding air sucked into the air tank to the main body in order to mix the air with the fuel vapor absorbed in the activated carbon for generating an air-fuel mixture; a float for closing a connecting port between the air tank and the main body to prevent water sucked from the suction port into the air tank from flowing into the body; and a guide for guiding the float upward in the air tank, so diffusion of harmful gas to the atmosphere can be prevented by preventing water from flowing into the main body thereby increasing fuel vapor absorbing efficiency of the activated carbon for air pollution prevention.

Abstract: An adsorbent material containing package is provided for use within the sealed canister of a liquid accumulator for an air conditioning system of the kind in which the suction tube within the canister has spaced upwardly extending legs connected by a bottom bite and in which the bleed opening in the bite is formed as a downwardly extending nipple. The adsorbent material package is formed with substantially identical first and second pouches formed of tubular porous polyester felt material with sealed upper and lower ends containing a quantity of adsorbent material. The pouches making up the package are joined to each other at upper flanges with the junction being located along an extension of a median line through the pouches and leaving the ends of the flanges free of attachment. The transverse width of the pouch flanges exceeds the spacing of the suction tube legs so that the flange end portions are splayed to receive one of the legs therebetween thereby locating the package in relation to the suction tube.

Abstract: A method and apparatus for providing substantially pure hydrogen gas from a mixture of hydrogen and gaseous contaminants includes passing a gaseous mixture containing hydrogen gas and gaseous impurities through a purifier to form substantially pure hydrogen gas which is stored in a porous storage material including a getter material. The substantially pure hydrogen gas can be released from the porous storage matrix as desired. Preferably the purifier and porous storage matrix are separated by a thermally insulating matrix. The apparatuses can be combined in a serial configuration to provide a stream of substantially pure hydrogen gas at a substantially constant pressure.

Abstract: Apparatus for drying flowing gas includes a generally cylindrical vessel having a gas inlet and a gas outlet, two perforated plates of different metals in contact with each other transverse the interior of the vessel, and a third perforated plate downstream from the two mutually contacting plates.

Abstract: The invention is an air filtration and purification system, utilizing the filtering ability of the various elements in a potting medium for plants, water films and free water surface in contact with the roots of these plants, and the power of live plants to assimilate various odors, pollutants and in combination with commercially available air filter materials, such as activated charcoal, and other specialized granular air filter materials, to meet many air filtration requirements. The system consists of a unique flower pot, with a potting medium cavity for specially formulated potting medium which permits the free flow of ambient air upon application of a partial vacuum, and sustains the normal growth of the plant in the flower pot, and a built-in filter chamber, which is adaptable to any commercially available granular air filter material.

Abstract: The gas stream which is produced in and emanates from landfills, anaerobic digesters and other waste gas streams, is treated to produce a purified gas which is essentially a hydrocarbon such as methane and which can be used as the fuel source in a fuel cell power plant. The gas stream passes through a simplified purification system which removes essentially all of the sulfur compounds, hydrogen sulfide, and halogen compounds from the gas stream. The resultant gas stream can be used to power a fuel cell power plant which produces electricity, or as a hydrocarbon fuel gas for other applications.

Abstract: In a vent arrangement comprising a heating cylinder 1 containing therein a screw and provided with a vent hole 3 and a reduced pressure exhaust path 4 provided with a vacuum pump and connected to the vent hole 3 for draining volatile fractions of a material to be molded from the heating cylinder by reducing the pressure in the vent hole by means of the vacuum pump, said volatile fractions are removed by arranging in the exhaust path a filter unit 7 filled with a granular filtering material 8. The material to be molded is used for the filtering material 8. According to the above construction, it can be achieved to efficiently remove volatile matters by using the molded material as the filtering material of the filter unit arranged in the reduced pressure exhaust path of a vent arrangement.

Abstract: Apparatus for drying flowing gas includes a generally cylindrical vessel having a gas inlet and a gas outlet, two perforated plates of different metals in contact with each other transverse the interior of the vessel, and a third perforated plate downstream from the two mutually contacting plates.

Abstract: A downhole fluid separation system is used with submergible pumping systems to separate downhole fluids into different density fluids, recover the lighter fluids to the earth's surface, and dispose the heavier fluids downhole. The fluid separation system includes a plurality of housings connectable one to another, each housing having one or more fluid separators, such as hydrocyclones, therein with an inlet of each fluid separator in communication with an inlet conduit, an overflow of each fluid separator in communication with an overflow conduit, and an underflow of each fluid separator in communication with an underflow conduit. The fluid separation system can be configured for parallel flow where the conduits conveying fluids downstream of a first housing have a greater cross-sectional flow area than corresponding conduits in an adjacent second housing. Also, the fluid separation system can be configured for series flow, for either the separated lighter or the separated heavier fluids.

Abstract: A device for the filtration of an airstream, in particular for a heating and/or air conditioning installation in a motor vehicle. The device provides, on one hand, a filtration that includes as much as possible of the entire airstream, while, on the other hand, for cooling and/or heating purposes, the device provides the entire air-conveying capacity without any air-output losses due to the filtration. The device includes a first outer air-channel containing fixed filter-wall parts of an activated carbon-filter arrangement, and a second inner air-channel containing second filter-wall parts of a particle-filter arrangement. The second filter-wall parts can be pivoted between an opening position which is essentially parallel to the first filter-wall parts and a closure position. Also included is a closure device at the exit of the outer air-channel, such that in the closure position, the entire airstream is conveyed at least through the filter-wall parts.

Abstract: A moisture removal device for compressed gas lines and the like includes a connection head having a gas inlet and a gas outlet. An elongated housing having an internal cavity is attached to the connection head with the use of a clamp ring. The elongated tube and head are sealed to each other with the aid of O-rings preventing the escape of the compressed gases. Internal of the housing is a cartridge containing desiccant media for the removal of water vapor from a compressed gas. The cartridge is sealed and supported to the connection head with the use of a centrally threaded rod and O-rings located between the cartridge and the connection head. The external body of the desiccant cartridge is impermeable to gas and forces compressed gas from the inlet of the connection head to the bottom of the elongated housing.

Abstract: This invention is related to a slurry filtration device and the wet lime-gypsum flue-gas desulfurization system comprising a slurry filtration device for the separation (concentration) of gypsum. The slurry filtration device comprises tank that has a slurry supply pipe at its upper part and a filtrate-drain hole at its bottom, a layer of filter sand lying on its bottom, a slurry accumulator arranged on the layer of filter sand, and a vibrator set in said slurry accumulator for vibrating the slurry. The present invention not only improves the solid-liquid separability remarkably but also saves cost and space.

Abstract: A desiccant cartridge for an air dryer of the type used for compressed air supply systems. The desiccant cartridge incorporates an internally disposed particulate filter element which functions to provide particulate filtration for air coming into the desiccant cartridge. The filter element further acts to apply a compressive loading against internal components within the desiccant cartridge insuring that these parts are firmly coupled and providing sealing engagement between components despite manufacturing tolerance variations in the component parts.

Abstract: Apparatus for conducting an improved method of processing a catalytic reformate with an improved production of hydrogen. The apparatus comprises units for conducting a separation stage, absorption at 20.degree. to 60.degree. C. and at a pressure of at least 10 bars, purification of hydrogen over adsorbent beds and recycling of the residual gas obtained at purification.

Abstract: A system which reduces the transmission of noxious fumes into the surrounding air during the application of a heated liquid roofing product on a roof. A mobile tanker or kettle contains a supply of the heated liquid. The air space within the tanker or vessel above the liquid product communicates with a mobile filtration unit by a first duct. A rooftop carrier for the liquid product has a fume collection hood which communicates with the filtration unit by a second duct. A blower in the filtration unit creates negative pressure which draws the noxious fumes from the tanker or vessel and carrier through the ducts and into and through the filtration unit. The filtration unit has a series of airtight chambers mounted on a mobile truck bed, each containing a different type of filtering medium to remove various components of the noxious fumes as the fumes move through the filtration unit.

Abstract: Equipment samples and processes for analysis PAH and other organic compounds, as well as hydrogen fluoride and sulphur oxides in air and in gas in production equipment.The equipment comprises a layered adsorption device 1 in which the adsorbents are dry. During sampling, the adsorption device 1 is connected at its upper end to a probe 8, which is brought into contact with the object to be sampled, and connected at its lower end to a gel box 10, a pump 9 and a gas clock 12, in series. After sampling, the adsorption device 1 may be connected directly to an extraction apparatus 11 for the processing of the sample.

Abstract: An apparatus for removing fumigation gasses from fumigated structures is provided. Air is directed from a structure through an adsorption unit and then recirculated back into the structure. A fan directs air through the adsorption unit. The adsorption unit contains an annularly shaped adsorption bed and an inner passage way and outer passage way through which fumigation gasses are directed. A lower adsorption efficiency per pass through the adsorption bed is used in conjunction with multiple passes with the method of the present invention.

Abstract: An absorber fluid circuit is provided for a volatile liquid vapor recovery system. The vapor recovery system includes at least one adsorbent bed for capturing volatile liquid vapor, a vacuum pump for regenerating the adsorbent bed, a heat exchanger for cooling the vacuum pump, an absorber tower for condensing volatile liquid vapor and an absorber fluid source. The absorber fluid circuit includes an absorber fluid supply pump and a first conduit for directing absorber fluid from the absorber fluid source to the supply pump. A second conduit directs absorber fluid from the supply pump to both the heat exchanger and absorber tower. A third conduit returns spent absorber fluid from the heat exchanger and absorber tower back to the absorber fluid source.

Abstract: The gas stream which emanates from landfills is treated to produce a purified gas which is essentially a hydrocarbon such as methane which can be used as the fuel source in a fuel cell power plant, or can be used in other power plants which use natural gas as a fuel. The landfill gas passes through a system which removes essentially all of the hydrogen sulfide; water; organic sulfur and halogen compounds; and solid contaminants from the gas stream. The resultant purified gas stream can be cleanly flared; used to power an energy plant; or put to other useful purposes.

Abstract: A separation of gas by permeation, comprising the steps of and the apparatus for compressing a gaseous mixture to be separated at a first temperature (Ta) in a compressor (2), cooling to a second temperature (To) the compressed mixture to condense condensable impurities in the compressed gaseous mixture, purifying the compressed gaseous mixture of condensable and/or adsorbable impurities at a third temperature (T.sub.1) greater than the second temperature (T.sub.0) and passing the purified gaseous mixture into a gaseous permeation unit comprising at least one membrane module to obtain at least one production gas. The third temperature (T.sub.1) is so regulated that it will not be less than a first predetermined value. The second temperature (To) is greater than the first temperature (Ta) by a value comprised between 1.degree. and 5.degree. C., the first value being not less than 20.degree. C.

Abstract: A method for removing fumigation gasses from fumigated structures is provided. Air is directed from a structure through an adsorption unit and then recirculated back into the structure. A fan directs air through the adsorption unit. The adsorption unit contains an annularly shaped adsorption bed and an inner passage way and outer passage way through which fumigation gasses are directed. A lower adsorption efficiency per pass through the adsorption bed is used in conjunction with multiple passes with the method of the present invention.

Abstract: A ceiling mounted air purifier that provides a high velocity, multi-directional air exhaust pattern that distributes filtered air to all areas of a room which includes a plurality of filters and centrifugal fans. The centrifugal fans are substantially surrounded by baffles which form generally equally spaced exhaust outlets.

Abstract: A device for filtering sewer gases includes a main body member and lower and upper filter medium chambers. The lower chamber contain carbon as the filter medium and the upper chamber contains copper steel wool and a silver coil as a filter medium. An adapter member is fixed to the main body member for connection to a house sewer vent.

Abstract: An evaporation loss control device provided with a polymer chamber filled with polymer absorbent, a charcoal chamber filled with charcoal, introduction and purging pipes for connecting the polymer chamber with a fuel tank and an engine intake passage, respectively, an air pipe for ventilation connected to the charcoal chamber, and a vapor passage, which has various forms. For example, the vapor passage may be formed in spiral to encircle the polymer chamber, or provided between the polymer and charcoal chambers, thus allowing the evaporated fuel to pass therethrough. The vapor passage is constructed to prevent the evaporated fuel trapped by the polymer absorbent from flowing into the charcoal chamber, and also to prevent the liquid fuel from being absorbed by the charcoal.

Abstract: An exhaust apparatus for an epitaxial growth system includes an exhaust pipe, a dust filter, and a liquid nitrogen trap. The exhaust pipe performs exhaustion of a reaction furnace in which a reaction gas is supplied to grow a thin film on a semiconductor wafer. The dust filter traps reaction products which have not been used for growing the thin film on the semiconductor wafer, and the dust filter is arranged in the exhaust pipe. The liquid nitrogen trap is arranged in the exhaust pipe in series with the dust filter.

Abstract: An improved filtration system involving the use of ultraviolet irradiation, ozonation, chlorination, reactive filtration media, chemical treatment, compressed air aeration, air emission control, and central flow control is described. The process system and apparatus of the present invention mainly include a liquid pump, an ultraviolet pretreatment means, a central flow control, an air emission control means, a reactive pressure filter, a process tank, at least one chemical feeder means, an ultraviolet post-treatment means, and an aeration means.

Abstract: The invention relates to methine dyes and photographic silver halide compositions and film elements comprising methine dyes which contain 9,9a-dihydropyrido-[1,2-a]indolium nuclei, benzo[a]quinolizinium nuclei or 6,7-dihydrobenzo[a]quinolizinium nuclei.

Abstract: The present invention relates to light-sensitive photographic material with a light-sensitive heavy metal compound, e.g. a silver halide, and a spectral sensitizer. The spectral sensitizer is a compound in which the radicals of a sensitizing dyestuff are covalently bonded to amino, imino, hydroxyl, mercapto, carboxylic acid or carboxylic acid amide groups of a natural hydrophilic colloid, preferably gelatin.The invention also relates to new sensitizing dyes which are dinuclear cyanine dyes or merocyanine dyes which have attached either to a heterocyclic nucleus of the dye or to its methine chain a group which is reactive with a hydrophilic colloid.

Abstract: Photographic silver halide emulsions and elements containing completely rigidized carbocyanine dyes which can be represented by the general formula: ##STR1## wherein: A. Z represents the atoms necessary to complete a heterocyclic nucleus of the type found in cyanine dyes useful as sensitizers in photographic silver halide emulsions, andB. X.sup.- represents an anion.

Abstract: Methine dyes comprising first and second nuclei joined by a double bond or a methine linkage. The first nuclei may be eitherA. a pyrido nucleus joined at the 4- or 6-carbon atom thereof to said double bond or methine linkage or,B. a 5,6-dihydropyrido nucleus joined at the 4- or 5-carbon atom to said double bond or methine linkage.The pyrido or dihydropyrido nucleus can have fused to its 1,2-side the atoms required to complete a ring containing 5 or 6 atoms. The second nuclei may be either the same as (a) or (b) or can be of the type typically used in cyanine styryl and merocyanine dyes. Such dyes are useful filter dyes and spectral sensitizers for silver halide compositions. Also described are intermediates useful in the synthesis of said dyes.

Abstract: Light-sensitive photographic emulsions are provided which feature at least one methine dye containing a 1H-imidazo[4,5-b]pyrazine nucleus.