Abstract: The exhaust gas treatment apparatus has a sealed vessel which is vertically partitioned into two spaces by a partition. A portion of the sealed vessel lower than the partition is an absorbing liquid storage portion, and a portion of the sealed vessel upper than the partition is an exhaust gas introducing portion. The partition is provided with a large number of sparger pipes so that the sparger pipes reach inside an absorbing liquid stored in the absorbing liquid storage portion. The partition is provided with a single gas riser in communication with a space upper than the absorbing liquid in the absorbing liquid storage portion. An upper end of the gas riser passes through a top plate portion of the sealed vessel and protrudes upward.

Abstract: Sulfur contaminants, such as elemental sulfur (S8), hydrogen sulfide and other sulfur components in fluids (e.g., air, natural gas, and other gases, as well as water and other liquids) are removed using a silicone-based chemical filter/bath. In one embodiment, a silicone-based chemical filter includes a membrane having a cross-linked silicone that is a reaction product of an olefin and a polyhydrosiloxane. For example, sulfur contaminants in air may be removed by passing the air through the membrane before the air enters a data center or other facility housing computer systems. In another embodiment, a silicone-based chemical bath includes a housing having an inlet port, an outlet port, and a chamber containing a silicone oil. For example, sulfur contaminants in air may be removed by passing the air through the silicone oil in the chamber before the air enters a data center or other facility housing computer systems.

Abstract: The present invention is a wet scrubber having a forced mixing chamber on top of an immersed packed bed, significantly increasing the scrubbing efficiency of acid gases and other pollutants by maximizing gas to liquid contact. A mixing fan located outside of the wet scrubber being connected to a mixing zone through an inlet duct to receive fluid from the mixing zone and an exhaust duct to blow fluid back into the mixing zone, thereby enhancing the mixing process inside the mixing zone.

Abstract: The exhaust gas treatment apparatus has a sealed vessel which is vertically partitioned into two spaces by a partition. The partition is provided with a gas riser for deriving treated exhaust gas from an upper space of the absorbing liquid storage portion. A large number of sparger pipes are provided in a effective region, so as to reach inside an absorbing liquid stored in the absorbing liquid storage portion. A non-jet region is provided in the effective region. The froth layer is not formed in the non-jet region, and the absorbing liquid in a foamed state flows down from the froth layer therearound to circulate the absorbing liquid.

Abstract: The invention relates to a device and method for treating a hot gas flow containing slag and to an entrained-bed gasifier system that comprises the device. The device comprises, in a housing, an inlet arranged at the top for the hot gas flow, an immersion pipe, which is arranged vertically and concentrically in the housing and into which the inlet opens, a coolant bath, into which a lower section of the immersion pipe is immersed, and at least one raw gas outlet opening for cooled raw gas that has been freed of slag. The lower section of the immersion pipe is designed as a radially expanded gas distributor bell in the coolant bath. Said gas distributor bell is formed by a substantially conical jacket surface having a cross-section that expands downward, wherein the jacket surface has a plurality of gas passage openings, which are distributed over the circumference of the gas distributor bell. The dimensions of the gas passage openings increase with the immersion depth in the coolant bath.

Abstract: A method and apparatus for treating natural gas comprises a contactor having a manifold for spreading gas in the contactor vessel, a plurality of perforated plates above the manifold, a spray system for spraying a treating liquid into an upwardly rising column of gas and a liquid level controller for maintaining the treating liquid above the perforated plates. Gas and liquid from the contactor pass through a cooler and are then separated. A treating liquid regeneration system receives the treating liquid and flashes the liquid at low pressure to separate hydrocarbon gases, hydrocarbon liquid and treating liquid. The treating liquid is regenerated by heating and flashing off contaminant gases and is ultimately redelivered to the contactor.

Abstract: The invention relates to an apparatus and a method for handling gases, the apparatus comprising an inlet gas duct (2) leading said gas to a bubbling tank (21), and a gas buffer drum (3) opening into the tank (21) via perforations formed on a plate (3a) of the drum (3), and a suction duct (5) submerged in gas handling liquid (7) situated in the tank (21), and having a gas outlet duct (8) connected into the gas room (3b) of the tank (21). Said perforations formed on the plate (3a) of the drum (3) are shaped as nozzles (4) having a blow direction (J) inclined by an acute angle relating to the plate (3a). The apparatus further comprising a valve (31) for draining the liquid (7) and a turbine house (22) divided into two chambers (22a,22b) by a plate (27), the first chamber (22a) housing an air turbine (43) driven by a liquid turbine (23) housed in the second chamber (22b) and operated by a liquid jet nozzle (26).

Abstract: An apparatus for removing unwanted contaminates from gases, wherein the apparatus can include a housing that has at least one removable portion. The apparatus can also include a reaction chamber formed within the housing. A cartridge can be disposed in the reaction chamber. The cartridge can be connected to the removable portion of the housing.

Abstract: In a bubble-column vapor mixture condenser, a fluid source supplies a carrier-gas stream including a condensable fluid in vapor phase. The condensable fluid in liquid form is contained as a bath in a chamber in each stage of the condenser, and the carrier gas is bubbled through the bath to condense the condensable fluid into the bath. Energy from condensation is recovered to a coolant in a conduit that passes through the liquid in the stages of the condenser. The bubble-column vapor mixture condenser can be used, e.g., in a humidification-dehumidification system for purifying a liquid, such as water.

Abstract: A gas filtration apparatus includes a first pipeline configured to divide transmitted gas and air to second and third gas flows, transmit the second and third gas flows to second pipeline bundle which is configured to divide each of the second and third gas flows to two or more gas flows and transmit the divided gas flows to a plurality of filters, a purifying tank configured to contain first water for purifying the divided gas flows, a plurality of filters positioned in a lower space of the purifying tank and configured to disintegrate one or more bubbles created by the divided gas flows, and a gas outlet configured to collect a plurality of bubbles emitted from the first water and release the collected bubbles to the outside of the gas filtration apparatus.

Abstract: An apparatus is provided for drying a gas by gradually releasing and condensing the moisture in various chambers of a column, different pressures and different temperatures thus being present in the chambers of the column. The gas to be dried is first fed into the bottom chamber, where the largest amount of the water contained in the gas is condensed, and the gas is then discharged from the bottom chamber via a nozzle. Subsequently the gas is cooled and fed into at least one more chamber located above the first chamber, where further moisture is condensed before the resulting condensate is fed via a pipe—preferably shaped like a siphon—into the bottom reservoir to prevent the gas from flowing from the chamber below into the chamber above. A process which enables a gas to be dried is also described.

Abstract: A gas purifying device for energy saving and preventing spraying waste water indiscriminately includes: a container (103) containing a proper quantity of purifying liquid; a waste gas incoming pipe (101) having a channel mouth (102) for introducing waste gas, wherein the channel mouth (102) is contacted with and provided in the purifying liquid in the container (103) and is submerged by the purifying liquid; and safe gas discharge channels (107, 109) for purified gas. A cross-sectional area of a narrowest part of the safe gas discharge channel (107, 109) is greater than a smallest part of the waste gas incoming pipe (101), so as to ensure a smooth operation of the gas discharge channel. The gas purifying device solves problems of regular engine flameout due to the non-smooth gas discharge of a purifier and environmental pollution caused by spraying waste water indiscriminately in the purifier working process.

Abstract: In a bubble-column vapor mixture condenser, a fluid source supplies a carrier-gas stream including a condensable fluid in vapor phase. The condensable fluid in liquid form is contained as a bath in a chamber in each stage of the condenser, and the carrier gas is bubbled through the bath to condense the fluid into the bath. Energy from condensation is recovered to a liquid composition in a conduit that passes through the liquid in the stages of the condenser. The bubble-column vapor mixture condenser can be used, e.g., in a humidification-dehumidification system for purifying a liquid, such as water.

Abstract: A method of mixing an oxygen gas with a hydrocarbon-containing gas includes the steps of wet scrubbing the oxygen gas in a wet scrubber, supplying oxygen gas from the wet scrubber to a gas mixer and mixing the oxygen gas with the hydrocarbon-containing gas in the gas mixer. Wet scrubbers for use in the method may take various forms, including packed-tower, bubble cap, and sparger-type wet scrubbers. The removal of the particulate matter reduces the risk of ignition of the hydrocarbon-containing gas in the gas mixer. The use of a wet scrubber in the oxygen supply line overcomes many problems currently faced with screen and filters, as per current practice.

Abstract: A fluid scrubber in the form of a submerged gas reactor includes a reaction vessel, a gas delivery lube partially disposed within the reaction vessel to deliver a gas into the reaction vessel and a scrubbing liquid inlet that provides a scrubbing liquid to the reaction vessel at a rate sufficient to maintain a controlled, constant level of fluid within the reaction vessel. A weir is disposed within the reaction vessel adjacent the gas delivery tube to form a first fluid circulation path between a first weir end and a wall of the reaction vessel and a second fluid circulation path between a second weir end and an upper end of the reaction vessel. During operation, gas introduced through the tube mixes with the scrubbing liquid and the combined gas and liquid flow at a high rate with a high degree of turbulence along the first and second, circulation paths defined around the weir, thereby promoting vigorous mixing and intimate contact between the gas and the scrubbing liquid.

Abstract: A system for removing unwanted contaminates from gases using a scrubber, which comprises a housing, a reaction chamber having a liquid level, an inlet connected to a source containing gases to be scrubbed with a contamination concentration greater than zero ppb to saturation. A gas exit port connected to the housing is used for evacuating scrubbed gas and a sintered permeable membrane is disposed across the reaction chamber, which provides a reaction zone in the plurality of pores when gases to be scrubbed are introduced to the membrane on a first side while the membrane is immersed in the lean liquid; and a cleaned gas on a second side wherein the clean gas initially has a drop in contamination concentration of at least 99 percent and gradually decreasing to 70 percent as additional gases to be scrubbed are introduced to the plurality of pores without replacing the lean liquid.

Abstract: A gas filtration system includes a liquid filtering system and a gas transferring system. The liquid filtering system has multiple tanks connected to each which contains a gas scrubbing liquid through which the gas is bubbled. The gas transferring system includes pipes coupled with the tanks for transferring gases. The tanks include a dry tank that is used for storing one or more of pumps, filters and a gas flow buffer.

Abstract: A total water desalination system is disclosed that includes a centrifugal separator, a feed-water device controlled by a relative humidity sensor, an air pump, an evaporator core, an air dryer, a non-particulate coalescent air filter, and an air flow/brine gravity separating tank. The evaporator core typically contains multiple conical processing chambers and introduces a physical dynamic that increases the surface area of the water, using low-level thermal energy to vaporize micron-size water particles into a gaseous state, suitable for reconstitution into desalinated (or lower salt content) water. The evaporator core operation principles are based on creating a highly dynamic environment that separates impurities from sea, brackish, river, or turbid water; evaporating the water into a residual clean vapor, and returning the vapor to water composition with high efficiency.

Abstract: In a method for air treatment in a display cabinet for the storage and/or display of objects, whose walls, floor and roof structure more or less enclose the inside space of the display cabinet and in which a forced inflow of air from an air delivery system connected to the inside space (1) of the cabinet maintains a slight excess pressure compared with the air outside it, the said airflow passes through suitable dust or gas filtration means before entering the cabinet and its air humidity is adjusted and/or controlled by means of a cooling device. After filtration, the airflow passes through a catalyser (8) present in a liquid (7), the air picks up moisture from the liquid and is rendered completely free from germs. In this manner and in a simple way, a completely germ-free atmosphere is produced inside the display cabinet. A display cabinet for implementing the method has a corresponding structure.

Abstract: A gas filtration system includes a liquid filtering system and a gas transferring system. The liquid filtering system has multiple tanks connected to each which contains a gas scrubbing liquid through which the gas is bubbled. The gas transferring system includes pipes coupled with the tanks for transferring gases. The tanks include a dry tank that is used for storing one or more of pumps, filters and a gas flow buffer.

Abstract: Scrubbing systems and methods for removing carbon dioxide from a gas are provided. The scrubbing system can include a scrubber defining a vertically oriented tubing assembly, a gas inlet and a gas outlet. The tubing assembly has a tank section, a reduced diameter section, and an expansion section such that the expansion section is positioned above the reduced diameter section and the reduced diameter section is positioned above the tank section. An aqueous liquid-phase scrubbing media is contained within the tank section. The scrubbing system can further include a water bath configured to receive the CO2-free gas exiting the scrubber.

Abstract: A method and apparatus for treating natural gas comprises a contactor having a manifold for spreading gas in the contactor vessel, a plurality of perforated plates above the manifold, a spray system for spraying a treating liquid into an upwardly rising column of gas and a liquid level controller for maintaining the treating liquid above the perforated plates. Gas and liquid from the contactor pass through a cooler and are then separated. A treating liquid regeneration system receives the treating liquid and flashes the liquid at low pressure to separate hydrocarbon gases, hydrocarbon liquid and treating liquid. The treating liquid is regenerated by heating and flashing off contaminant gases and is ultimately redelivered to the contactor.

Abstract: A method and apparatus for conditioning the air within an interior area, includes a fan, a first module receiving air from the fan and preferably a first liquid, and a second module receiving air from the first module and preferably including a second liquid. The modules are preferably stacked, whereby air enters the fan module on the bottom and is delivered to the environment from the second module at the top. The air flows from the fan along a pathway which prevents liquid from escaping from the modules other than as vapor entrained in the air. The first liquid is preferably an aqueous alkaline solution, and the second liquid preferably includes a disinfectant and/or a buffer to neutralize the alkaline before air is delivered to the environment. The modules may have an inner wall and an outer wall presenting a dead-air space therebetween.

Abstract: A liquid container and a battery operated blower. The container with blower will go across the shoulder with any available strap. Blower will deliver the air in the container at the bottom of the liquid. Clean and decontaminated air will rise and exit through nasal cannula tube and deliver the clean air at the users nostrils. If the battery runs out the user will be able to connect the provided attachment to the nasal cannula and put the attachment inside the nostrils. Attachment is designed to let user breathe in and breathe out without the need to remove the attachment. Also an air regulator provided in so the flow of air can be regulated as per need of the user.

Abstract: A method and apparatus for treating natural gas comprises a contactor having a manifold for spreading gas in the contactor vessel, a plurality of perforated plates above the manifold, a spray system for spraying a treating liquid into an upwardly rising column of gas and a liquid level controller for maintaining the treating liquid above the perforated plates. Gas and liquid from the contactor pass through a cooler and are then separated. A treating liquid regeneration system receives the treating liquid and flashes the liquid at low pressure to separate hydrocarbon gases, hydrocarbon liquid and treating liquid. The treating liquid is regenerated by heating and flashing off contaminant gases and is ultimately redelivered to the contactor.

Abstract: The present invention provides a portable system for capturing airborne pollutants and methods for using the portable system. The apparatus includes at least one flexible and maneuverable source containment means that can be connected to an atomizer, such as a spray gun or aerosol can or can be positioned near or over an open container giving off airborne pollutants. At least one suction generator allows air flow from the source containment means to at least one filter that may be attached or detached from its source of suction. After filtration, the apparatus includes at least one exhaust means to remove the treated air from the proximity of the user.

Abstract: The present invention consists of a system related to vacuum cleaners, more specifically, to a system designed to filter the micro-dust that escapes from the bag with the air. The inlet turbine will suck the dirt into the vacuum cleaner bag Zone 1 where the air will escape into Zone 2. At the same time, the micro-dust will also escape with the air into Zone 2. The exhaust turbine sucks the dust content air in Zone 2; hence, the dust content air will travel through the dust collector pipes then through the dust collector main pipe, then through the small “L” type pipes, then hit the water dumping the dust into the water in the compartment one. The dust content air then travels up to get into the small “L” type pipes in the compartment two, then hits the water.

Abstract: Sanding and screening are steps in floor finishing that produce large quantities of fine dust which is difficult to remove and which plugs porous filter elements of dust collection systems. Dust collection is enhanced with a floor screening attachment for a floor machine. A vacuum system with a liquid filtering medium is provided to collect dust produced during screening. A dust collection unit is also disclosed to collect and separate sawdust produced by sanding which can cause foaming of a liquid filter medium.

Abstract: A system for cutting and cleaning material to be cut. The system is particularly effective for hard materials which produce heavy particles. The system is ideal for cutting green concrete. This invention provides a two-piece device for locating vacuum a hose connection for a circular saw used in cutting concrete. The hose connection is contained in the low, rear part of the lower piece. The invention also proves a vacuum cleaner which passes debris-laden air through water which collects the debris. Water-laden air rising from the water is passed around a first water barrier connected to a float and a second water barrier connected to the top of the container in order to remove entrapped water droplets which may contain debris.

Abstract: The apparatus is a portable paint spray capture apparatus that limits dispersion of sprayed paint and permits spray painting small surfaces in unenclosed areas without harming the environment or nearby objects. An open top container is located below the surface being painted and hoses interconnect the container to a vacuum device drawing air from the container and through a water trap that collects paint particles. Air leaving the water trap passes through an underwater mesh screen to form smaller bubbles to help separate out the paint particles. Air movers push air from opposite sides of and toward the center of the surface being painted. Significant air flow paths are thereby established from the sides of the spray area into the container below it, and virtually all of the paint not adhering to the surface being painted is collected by the water trap.

Abstract: A system for cleaning air wherein the air to be cleaned is bubbled up through an aqueous phase and an organic phase. The air is bubbled upwardly through the liquid to take advantage of the weight of the liquid to compress the gas, thereby increasing the solubility of the gas in the liquid. Because of specific gravity, the aqueous phase is generally at the bottom of at least one cylinder or container, and the organic phase is generally on top of the aqueous phase. Gases are removed either continuously or periodically to ensure that there are adequate reagents in the aqueous and organic phases, so that the reagents therein can be replaced as needed. There is no limit to the number of cylinders that can be used, depending upon the impurity and thus the amount of reagents to be used in treating the air.

Abstract: A water-based air filter system for recycling and cleaning the air found in industrial plants, in particular. The water-based air filter system includes a support base; and also includes a tank being disposed in the support base and being at least partially-filled with water and having an inlet hole being disposed through a wall thereof, and also having an outlet hole being disposed through the wall thereof; and further includes an air inlet spout being extended through the inlet hole and into the water in the tank; and also includes an air outlet spout being extended through the outlet hole and being extended from the tank; and further includes an outside air suction assembly being mounted upon the support base and being connected to the air inlet spout for drawing polluted air into the water in the tank.

Abstract: An air filter baffle unit that works with large type canister wet/dry type vacuums. The baffle unit also can be used in large air filter systems and can be ganged to increase filtering. The baffle unit has two sections that are connected for use. An inlet pipe is connected to the inlet of the vacuum. This inlet pipe directs the incoming dirt into the baffle unit, where it encounters a number of baffles and a water reservoir before it is expelled as clean air. In this baffle unit, there is no need for paper or other types of filters that must be periodically replaced. In this way, the baffle unit provides a simple, effective mechanism for filtering air using the wet/dry vacuum. The baffle unit can be also placed in an air filtering system that has a housing, an inlet and an outlet.

Abstract: Sanding and screening are steps in floor finishing that produce large quantities of fine dust which is difficult to remove and which plugs porous filter elements of dust collection systems. Dust collection is enhanced with a floor screening attachment for a floor machine. A vacuum system with a liquid filtering medium is provided to collect dust produced during screening. A dust collection unit is also disclosed to collect and separate sawdust produced by sanding which can cause foaming of a liquid filter medium.

Abstract: An air cleaning apparatus is disclosed which, in one embodiment, has: an inlet for ambient air; an outlet for purified air; a mechanism for the uptake of a scrubbing liquor and for the removal of impurities dissolved or dispersed in the ambient air by contact with said scrubbing liquor; an inlet for feeding a scrubbing liquor from a scrubbing liquor feeding tank; an outlet for discharging used scrubbing liquor; and a blower for drawing ambient air into the apparatus, flowing the air through the apparatus and discharging the purified air from the apparatus. A kit including an apparatus as described above and a refill of scrubbing liquor ingredients, or of a scrubbing liquor concentrate or of a ready-to-use scrubbing liquor is also disclosed.

Abstract: An apparatus is provided for separation of suspended solid particles from fluids, for separation and mixing of fluids, and for dissolving gases in aqueous fluids. The apparatus employs a grooved ring to divide the fluid stream and impart a high velocity on each of the divided or sub-streams. A grooved ring with any number of grooves that may be spiral in shape is used to create a high velocity circular motion on a divided stream for separation of suspended solid particles by centrifugal force in a cyclone filter and for saturation of liquid with gases in a fluid mixer where gases are introduced through a diffuser. A grooved ring with any number of grooves that may be radial is used in a fluid mixer to divide a stream of fluid, produce a high velocity flow through each groove, introduce a second fluid through an orifice into the first fluid flowing through each groove, and direct the fluid mixture to a center impact zone where the various streams collide to complete the mixing.

Abstract: A wet exhaust processing system including an exhaust separator having a lower water containing portion and a wet exhaust inlet and a separated exhaust outlet above the water. An overflow pipe controls the upper lever of the water in the separator and a pump connected to the lower portion pumps the water therefrom to a filtering device.

Abstract: An air cleaner includes a scrubber, a water purifier and a water feeder. The scrubber includes a housing being provided with a central tank and an air outlet. A barrel is disposed inside the housing so as to form a scrubbing room with the central tank. An air pump is disposed on top of the housing for pumping air into the scrubbing room via a pipe extending downward to the central tank so as to force scrubbing water contained in the central tank sprayed upward and scattered. One or a plurality of perforated middle barrels are disposed inside the scrubbing room in a manner coaxial with the central tank for dividing the sprayed water into fine drops. The water purifier have a filtering layer and an activated carbon part for purifying the scrubbing water. A water feeding means is disposed on the upper portion of the scrubbing room for supplying scrubbing water.

Abstract: Apparatus and methods for reducing residual solvent levels in extracted biomass that is contaminated with HFC solvent that includes sparging the biomass extract with a solvent stripping gas such as air or nitrogen are disclosed. Apparatus for carrying out the method include a vessel (12;25) containing extract (26) and a source of the gas. The source may be in the form of a moveable, hollow wand (27) having a sparging gas outlet; or a fixed gas inlet (30) for bubbling the gas through the extract (26).

Abstract: A treatment device is attached to a sealed container to provide clean replacement atmosphere to maintain the purity and cleanliness of the uncontaminated liquid remaining in the container. The device includes a valving system arranged to control flow of atmosphere into and out of the container, and includes a bubbler filled with treatment liquid, such as a disinfectant or purifying agent. Filtered air is bubbled through the treatment liquid prior to feeding the replacement atmosphere into the sealed container. In one embodiment, a floating valve assists in preventing undesired suction of the treatment liquid into the container. In another embodiment, the treatment device is attached to exhaust atmosphere to keep an ambient area clean as new liquid is added to the container and harmful atmosphere is exhausted. Methods related to the above are also defined and claimed.

Abstract: A vacuum cleaner is provided having a housing, a suction unit arranged therein and a suction pipe which enters the housing and is connected to the suction side of the suction unit via a dirt collecting container and a separating device. The closed dirt collecting container is adapted to be inserted into the housing and, when in the inserted position, be connected to the suction pipe in sealed manner via an intake opening and connected to the suction side of the suction unit in sealed manner via an extraction opening. The dirt collecting container is partially filled with fluid into which there enters a feed pipe that extends from the intake opening into the fluid. Deflector surfaces are arranged above the fluid-filling, said surfaces forming a multiply-deflected flow path between the upper surface of the fluid and the extraction opening for the suction current being passed through the fluid.

Abstract: An object of the present invention is to provide an exhaust gas purifier which can effectively remove soot from exhaust gas of a diesel automobile such as a truck and a bus and the like, and which has a simple structure, and an exhaust gas purifier in which carbon monoxide, nitrogen oxides, and sulfur oxides and the like can, in addition to hydrocarbons, be effectively removed from exhaust gas.

Abstract: A filtration device particularly for use with vacuum cleaners used for collection of fine liquid spray particles which tend to clog porous solid filters. The device utilizes readily replaceable liquid as a filtration medium with air being forced into the liquid then released for additional multiple liquid contacts. The device further includes horizontal baffles with air access apertures wherein one or more of the baffles can be perforated, mesh or absorbent therein which are positioned above the surface of the liquid, with a vacuum being applied to the area. This redirects liquid spray particle laden air into filtration contact with liquid multiple times wherein filtration efficiency is in excess of 99%. The perforated, absorbent or mesh baffle removes remaining mist or spray from the system or device.

Abstract: Exhaust gases from an internal combustion engine operating with leaded or unleaded gasoline or diesel or natural gas, are used for energizing a high-speed gas turbine. The convoluting gas discharge causes a first separation stage by stratifying of heavier and lighter exhaust gas components that exit from the turbine in opposite directions, the heavier components having a second stratifying separation in a vortex tube to separate combustible pollutants from non-combustible components. The non-combustible components exit a vortex tube open end to atmosphere. The lighter combustible, pollutants effected in the first separation are bubbled through a sodium hydroxide solution for dissolving the nitric oxide, formaldehyde impurities in this gas stream before being piped to the engine air intake for re-combustion, thereby reducing the engine's exhaust pollution and improving its fuel economy. The combustible, heavier pollutants from the second separation stage are piped to air filter assemblies.

Abstract: A weld chamber has an air intake and an exhaust or evacuating ductwork for evacuating gases and other particles from the welding chamber. The evacuating ductwork is connected to a vacuum source to remove gases and by products from the weld chamber during welding. A throttle plate is provided in the evacuating ductwork adjacent the weld chamber to adjust or regulate the air velocity evacuating from the weld chamber. The evacuating duct then leads to a sealed water filtering tank. All of the exhausted/evacuated gases and by products are led beneath the water line and bubble through the water before emerging from the sealed water. The soot and iron particles are immediately cooled and trapped in the water tank. Moreover, particles become wet and are less likely to become airborne thus leading to a substantial portion of the particles being trapped in the sealed water tank. Thee remaining gases are then evacuated to the vacuum source and further filtered by a mechanical filtration device.

Abstract: A vacuum cleaner assembly comprising a main housing, a primary filter system, and a secondary filter system. The main housing includes an inlet and an outlet. The primary filter system filters the air prior to being exhausted outwardly through the outlet. The secondary filter system is placed in downstream airflow from the primary filter system and provides additional filtering of the air prior to being exhausted to atmosphere.

Abstract: A filtration device particularly for use with vacuum cleaners used for collection of fine liquid spray particles which tend to clog porous solid filters. The device utilizes readily replaceable liquid as a filtration medium with air being forced into the liquid then released for additional multiple liquid contacts. The device further includes horizontal baffles with air access apertures wherein one or more of the baffles can be perforated, mesh or absorbent therein which are positioned above the surface of the liquid, with a vacuum being applied to the area. This redirects liquid spray particle laden air into filtration contact with liquid multiple times wherein filtration efficiency is in excess of 99%. The perforated, absorbent or mesh baffle removes remaining mist or spray from the system or device.

Abstract: The present invention provides to a method for removing sulfuric acid mist which comprises bubbling a gas containing sulfuric acid mist into an absorbing solution through a gas diffuser having pores with an average pore diameter of about 1,000 &mgr;m or less. This method allows simple and highly effective removal of sulfuric acid mist.

Abstract: A filter assembly for a vacuum cleaner that includes a main housing having an inlet and an outlet. A motor moves air from the inlet to the outlet, and a first filter is arranged between the inlet and the outlet for filtering the air. An inner wall and an outer wall that is spaced apart from the inner wall form a cavity between the walls. The cavity is located between the first filter and the outlet. The inner wall has an inner opening that permits air to flow from the first filter into the cavity, and the outer wall has an outer opening. A back cover is removably secured to the outer wall over the outer opening to seal the cavity and guide the air from the cavity to the outlet. The back cover includes an access opening that is removably secured to the back cover over the access opening to seal the access opening. A filter cartridge is removably disposed within the cavity.

Abstract: A apparatus for controlling air-borne particles at a manicure work station for controlling fumes and air-borne particles associated with manicures. The apparatus for controlling air-borne particles at a manicure work station includes a platform. The platform has a top surface. The platform has a lumen therein. The platform has a plurality of apertures extending into the lumen from the top surface. A housing has a top wall, a front wall, a back wall, a first side wall and a second side wall. The housing is integrally coupled to the surface of the platform. The apertures are positioned in the housing, and the top wall is substantially transparent. A first opening is in the housing. The first in opening is in the front wall. A second opening is also in the housing. The second opening located is in the back wall. A blower means circulates air. The blower means has an intake duct and an exit duct. The blower means is mounted to the top surface of the platform.