Abstract: A combined air-supplying/air-purifying breathing system that includes a self-contained breathing apparatus, a facepiece for delivering breathable air from the self-contained breathing apparatus to a user, and a powered air-purifying respirator having at least one filter and a blower and having an output connected by a hose assembly to the facepiece. A control interface operationally connects the self-contained breathing apparatus to the powered air-purifying respirator. The self-contained breathing apparatus includes a pressure vessel, a cylinder valve assembly and a pressure reducer, all carried by a back frame, and the powered air-purifying respirator is adapted to be mounted on, and carried by, the back frame, by coupling the back frame and the respirator together at respective attachment points.

Abstract: Embodiments of the invention relate to a composite hydrogen storage material comprising active material particles and a binder, wherein the binder immobilizes the active material particles sufficient to maintain relative spatial relationships between the active material particles.

Abstract: A powered air-purifying respirator that includes an enclosure, defining a single contiguous enclosed interior, an inlet duct, including an inlet and a distribution portion, that guides ambient air to the interior of the enclosure, a plurality of filter canisters disposed within the interior of the enclosure, and a blower that forces air through the at least one inlet, into the interior of the enclosure and through the plurality of filter canisters to produce filtered air suitable for breathing. A valve controls the flow of ambient air through the inlet duct. A fluid dam, disposed in an air path between the inlet and the filter canisters prevents liquids from reaching the filter canisters. The enclosure is reinforced and is adapted to provide protection for the filter canister from flame and heat while the filter canister is in use. A recirculation valve recycles previously-filtered air back into the enclosure.

Abstract: A breathing apparatus is operable in self-contained and filtered modes of operation. In the self-contained mode of operation, a breathable gas is delivered to a user from a self-contained source of breathing gas. In a second, filtered mode of operation, a suction source draws ambient air through a filter removing contaminants and delivers filtered ambient air to the user. A method of delivering air to a subject is also provided.

Abstract: Methods of controlling relative humidity in an enclosure that include preparing an aqueous solution, the aqueous solution including a hydratable salt, the hydratable salt including a divalent cation; preparing a second composition, the second composition including the aqueous solution; and polyacrylamide, a copolymer of polyacrylic acid and polyacrylamide, or both; and placing the second composition in the enclosure, wherein the second composition absorbs water from the atmosphere of the enclosure. Devices and systems including desiccants are also disclosed.

Abstract: A method and a device for discharging air current from a cooking area. The method and the device guide the air current through a sorption agent for absorbing water or water vapor contained in the air current. The sorption agent is regenerated preferably when the air current is not being discharged from the cooking area.

Abstract: Systems and methods for producing ozonated water on demand. In particular, these systems comprise a water source, an ozone source, and a nozzle that mixes ozone and water to form a highly concentrated, ozonated water solution. Instead of requiring the ozonated water to be re-circulated to achieve a desired ozone concentration, the nozzle is configured to form the ozonated water solution in a single pass through the nozzle. Additionally, instead of requiring the ozonated water to be discharged into a pressurized tank to increase ozone absorption, the nozzle allows the ozonated water to be openly discharge. In some cases, the nozzle comprises a venturi with multiple ozone inlets to increase mixing. Additionally, in some cases the nozzle comprises a single pass mixing mechanism that mixes the water and ozone to form the high concentrate, ozonated water solution in a single pass through the nozzle.

Abstract: Method for the process-integrated gas purification of a synthesis gas, including the following steps: gasification of the feed in a reactor by the use of pulse heaters; addition of additives to the reactor or to the gas section downstream of the reactor in order to remove sulphur-containing gas components in order to achieve in-situ removal; separation of dust content of the synthesis gas in the downstream gas section; recycling of the dust content separated off to the reactor.

Abstract: Improved compressor device consisting of a compressor (2) with an inlet (3) and an outlet (4); a compressed air line (5) which connects the outlet (4) of the compressor (2) to a user network (6); a drier (7) which is incorporated in the above-mentioned compressed air line (5) and which comprises at least two air receivers (13-16) which are each provided with an inlet (14) and an outlet (15) and which are filled with desiccant or drying agent, which air receivers (13-16) work alternately, such that while one air receiver (13) is drying the compressed gas, the other air receiver (16) is regenerated; and a blow-off device (28) for blowing off at least a part of the gas compressed by the compressor when the compressor (2) works in no-load or in partial load, characterised in that means are provided which make it possible to guide the part of the compressed gas which is blown off via the blow-off device (28) through the regenerating air receiver (13).

Abstract: A hydrogen peroxide vapor generation unit (10) receives hydrogen peroxide and water solution at an interface (20) and interconnects with an air dryer (14) by way of nipples (72, 92). In one embodiment, the dryer includes a clamping assembly (42) which is latched (74, 94) with the nipples and which receives a disposable desiccant cartridge (40). In an alternate embodiment, a reusable desiccant cartridge (40?) is connected directly to the nipples (72, 92). When the desiccant cartridge (40?) is saturated, it is removed and placed in a regenerator unit (120). A regenerated cartridge is installed in its place.

Abstract: Cartridge for the treatment of a gas by reaction with a reactive substance, comprising a cohesive assembly of alveolate cells that are at least partly filled with the reactive substance, the alveolate cells possessing one part of their wall which is permeable to the gas and impermeable to the reactive substance, said wall part being intended to be in contact with the gas.

Abstract: A dehumidifying device for absorbing water vapour from ambient air comprising a container having an opening to permit water vapour to enter the container, the container having a water-absorbing agent disposed therein for absorbing water vapour, wherein a first portion of the water-absorbing agent is adapted to provide an indication of water absorption faster than a second portion of the water-absorbing agent following exposure of the first and second portions of water-absorbing agents to water vapour, thereby providing an early indication of the operation of the device.

Abstract: A method, and systems for implementing such method, for purifying and conditioning air of weaponized contaminants. The method includes wetting a filter packing media with a salt-based liquid desiccant, such as water with a high concentration of lithium chloride. Air is passed through the wetted filter packing media and the contaminants in are captured with the liquid desiccant while the liquid desiccant dehumidifies the air. The captured contaminants are then deactivated in the liquid desiccant, which may include heating the liquid desiccant. The liquid desiccant is regenerated by applying heat to the liquid desiccant and then removing moisture. The method includes repeating the wetting with the regenerated liquid desiccant which provides a regenerable filtering process that captures and deactivates contaminants on an ongoing basis while also conditioning the air. The method may include filtration effectiveness enhancement by electrostatic or inertial means.

Abstract: A dehumidifying agent of coating film delamination type, characterized in that it comprises a package formed by using, at least partly, a sheet having a double layer structure, wherein a film unsusceptible to moisture permeation is arranged on the surface side and a moisture-permeable film is arranged on the inner side, and a deliquescent salt filled in the package, and it is subjected to use through delaminating the film unsusceptible to moisture permeation. The dehumidifying agent can be packaged with simplicity and ease and can be stored for a long period of time, and as a result, can be provided with improved economy.

Abstract: A moisture absorption apparatus comprises a desiccant container with a side wall and optionally a bottom and a desiccant solution container with a side wall and a bottom. The desiccant container receives particulate desiccant which forms a desiccant solution on contact with moist air. The desiccant container side wall has at least one air access opening and a passage permitting desiccant solution to flow into the desiccant solution container. The desiccant solution container has a top opening and is slidingly displaceable on the desiccant container so as to allow the desiccant container to be displaced in the desiccant solution container to a depth sufficient for the desiccant solution container side wall to fully cover the air access opening of the desiccant container.

Abstract: An adsorbent includes core particles containing an adsorbing material; a porous coating layer including a polymer material that coats the core particles; and an underlying layer containing a metal compound and disposed between the core particles and the porous coating layer. The porous coating layer is formed by spraying and applying a suspension or a solution containing the polymer material over the adsorbing material, or by immersing the adsorbing material into the suspension or the solution.

Abstract: A method and a device for filtering polluted air, in which the air is successively subjected to the processes of extracting grease/fat and water, drying air still containing residual humidity, and adsorbing smells/odors. The filter device includes, in a direction of flow a vortex filter, layers of expanded metal, a filter for drying the air, and an odor filter, all in a filter housing. The filter for drying the air and the odor filter are, preferably, combined in a filter cassette that is disposed on the filter housing such that it can be changed/replaced.

Abstract: A material for fixing gaseous hydrocarbon containing fibrous crystal aggregates formed by precipitating by making a metal aliphatic carboxylate dissolve completely in pure water to give a solution, stirring and gradually cooling the resulting solution; a method of preparing the fixing material; and a method of adsorbing and solidifying gaseous hydrocarbon by using the fixing material.

Abstract: A system for dehumidifying and deodorizing, the system comprising a hanging, dehumidifying and deodorizing pouch comprising a housing having a impermeable membrane and a semi-permeable securely attached to the impermeable membrane. The housing enclosing moisture-absorbent material and deodorizing material. The housing is enclosed within a jacket comprising a perforated contiguous wall; the wall defines an opening for receiving the housing. The jacket further comprises a closing member for closing the opening when the housing is within the jacket. The jacket can comprise a rigid, rectangular cage having a detachable lid. The semi-permeable membrane of the housing can comprise polyethylene or expanded polytetrafluoroethylene, individually or a combination thereof. The impermeable can comprise either polyethylene film or polypropylene film. The moisture-absorbent material can comprise a hygroscopic, deliquescent or a combination of a hygroscopic deliquescent and a gel forming polymer.

Abstract: Desiccant tablets including solid potassium formate are used to dry gas, especially in natural gas transmission lines. Preferred tablets comprise 1-4% potassium formate (most preferably 2-3%), up to 1% of a surfactant as a lubricant, and the balance desiccant salts, preferably calcium chloride.

Abstract: The invention is concerned with a device and a process for drying air in ventilation devices for fuel tanks and gas drying in fuel tanks via vapor permeable membranes and sorbents.

Abstract: Desiccant tablets including solid potassium formate are used to dry gas, especially in natural gas transmission lines. Preferred tablets comprise 1-4% potassium formate (most preferably 2-3%), up to 1% of a surfactant as a lubricant, and the balance desiccant salts, preferably calcium chloride.

Abstract: Desiccant tablets including solid potassium formate are used to dry gas, especially in natural gas transmission lines. The most preferred tablets comprise 5-15% potassium formate, up to 1% of a surfactant as a lubricant, and the balance desiccant salts, preferably calcium chloride.

Abstract: A drying material disposed in the passage of a compressed air system for removing moisture from air or gas includes a plurality of semi-rigid porous substrates impregnated with lithium chloride. The drying material is formed by preparing a saturated solution of lithium chloride and a nonflammable solvent. Porous substrata are contacted with the saturated solution to wet the substrata surface. The wet substrata are heated at a sufficient temperature for a sufficient duration to drive off excess liquid from the substrate. A desiccant comprising lithium chloride impregnated substrata is produced.

Abstract: A canister including an elongated hollow plastic body having a wall with inner and outer surfaces, an edge portion on the wall defining an open end, an end on the edge portion extending transversely to the inner and outer surfaces, a porous plastic member having an outer edge portion extending across the open end and fused to the end, an inner portion on the porous plastic member located radially inwardly of the outer edge portion and extending into the body and fused to the inner surface of the wall adjacent the end thereof, and a gas-treating material in the body. A method of fabricating the above canister including the steps of applying pressure and vibratory welding energy to the porous member to thereby cause the member which was originally planar in shape to have its outer edge compressed against the end of the body and fused thereto and the central portion inwardly of the outer edge forced into the body and its outer edge fused to the inner surface of the body adjacent the end.

Abstract: Solid gas-drying forms are made by heating drying salts with a polar solvent to form a saturated solution, then cooling, freezing and forming. Preferred salts are combinations of calcium and lithium bromides and chlorides in particularly effective molar ratios.

Abstract: A canister including an elongated hollow plastic body having a wall with inner and outer surfaces, an edge portion on the wall defining an open end, an end on the edge portion extending transversely to the inner and outer surfaces, a porous plastic member having an outer edge portion extending across the open end and fused to the end, an inner portion on the porous plastic member located radially inwardly of the outer edge portion and extending into the body and fused to the inner surface of the wall adjacent the end thereof, and a gas-treating material in the body. A method of fabricating the above canister including the steps of applying pressure and vibratory welding energy to the porous member to thereby cause the member which was originally planar in shape to have its outer edge compressed against the end of the body and fused thereto and the central portion inwardly of the outer edge forced into the body and its outer edge fused to the inner surface of the body adjacent the end.

Abstract: A regenerative hygroscopic filter having a housing containing an inlet port and an outlet port, and, a hydrophilic filter element positioned within the housing and disposed between the inlet and outlet ports, and operatively arranged to filter solid particulate matter and water when gas passes into the inlet port and through the filter element, and to release water via the inlet port when gas passes from the outlet port through the filter element.