Abstract: An oxygen concentrator and compressor assembly. An oxygen concentrator is disposed in a housing having an upper end. A compressor is disposed in a housing having a lower end. The upper end of the oxygen concentrator housing and the lower end of the compressor housing are configured such that placement of the lower end of the compressor housing on the upper end of the oxygen concentrator housing sets the position of the compressor housing with respect to the oxygen concentrator housing.

Abstract: A breathing air purification device and method having a carbon-monoxide free sweep stream. Water vapor is removed from a compressed air stream using a membrane dryer, comprising, a membrane having a permeate portion and a non-permeate portion, a membrane housing which encases the membrane, a membrane feed inlet conduit connected to the membrane and a non-permeate gas outlet conduit fluidly connected to the non-permeate portion of the membrane. The sweep stream used to cleanse the outer permeate portion of the membrane dryer is taken from a catalyst filter. The catalyst filter includes a cartridge containing a bed of catalyst, two end pieces maintaining the cartridge within a catalyst bed housing and having outlet holes, a catalyst inlet conduit connected to the bed of catalyst and a product gas outlet conduit connected to the outlet holes. A sweep inlet tube provides a gas connection from the catalyst filter component to the permeate portion of the membrane.

Abstract: An air intake filter assembly for filtering air flowing from a front end to a rear end includes a housing, a first filter stage, and a second filter stage. The filter stages are insertable in and removable from the housing. A latch is movable between a latched position in which the first filter stage is secured to the housing, and an unlatched position in which the first filter stage is not secured to the housing. A hinge is formable between the housing and the first filter stage, and the hinge allows the first filter stage to pivot with respect to the housing when the latch is in the unlatched position. When the first filter stage and the second filter stage are inserted in the housing and the latch is in the latched position, then the first filter stage is compressed against the second filter stage, which is compressed against the housing.

Abstract: A pickling process for descaling metal includes a two-stage filtering process to remove pickling liquor fog, mist, and/or vapors from a gas collected during the descaling process. The process includes a two-stage filtering arrangement that includes a first stage filter, which is arranged to remove a liquid phase of the pickling liquor from the gas, and a second stage filter, which is arranged to remove a gaseous phase of the pickling liquor the said gas. The recovered pickling liquor can advantageously be recycled for reuse because it is recovered in a relatively higher concentration that has heretofore been possible.

Abstract: A vacuum bag hold-down arrangement for a dust collection system maintains a negative pressure in the space between a dust collection drum and a plastic film liner or bag in the drum. A cyclonic separator at the station separates the dust from an air flow and deposits it into the liner in the drum. The hold-down arrangement employs a vacuum pump producing about 1 to 3 psig negative pressure. A vacuum conduit extends from the pump through a penetration in the drum and into the space between wall of the drum and the liner bag. A porous pad, e.g., open cell foam, is situated over the vacuum conduit and separates the bag liner from the vacuum conduit. This distributes the air flow into the vacuum conduit and creates a more uniform grip of the liner or bag to the drum.

Abstract: Apparatus for reducing pollution from a flare stack includes a platform disposed on or near the top of the flare stack and a plurality of baffles and filters disposed on the platform. A first plurality of upwardly extending stainless steel baffles is disposed around the flare stack while a second plurality of baffles is disposed about the outer periphery of the platform. A first and a second plurality of filters are disposed between the first and second plurality of baffles. The first plurality of filters associated with a fan, blower or pump for drawing flare gas into and out of the filter.

Abstract: An emission treatment system includes a separation device having a vessel that includes an inlet for receiving an emission stream having entrained solid particles. A first outlet from the vessel discharges captured solid particles from the emission stream and a second outlet from the vessel discharges a clean stream having fewer entrained solid particles than the emission stream received into the separation device. A particle collector is fluidly connected with the separation device and includes a collection portion for capturing solid particles from the emission stream.

Abstract: A system for gas cleaning has at least one casing (1) with a first chamber (31) into which the gas to be cleaned can be flowed and with a second chamber (33) from which the cleaned gas exits. A filter device (35) can have the gas flow through it and can be arranged between the chambers. The filter device has filter media both for the separation of solid particles and for dehumidifying the gas by separating out coalesced liquid. The system has, upstream of the filter device (35), an arrangement (11, 37) for preliminary dehumidification of the gas.

Abstract: A fuel delivery system includes a fuel stabilization unit that removes dissolved oxygen from liquid fuel to increase the temperature at which the liquid fuel can be elevated without substantial formation of insoluble products. At least a portion of the fuel with reduced amounts of dissolved oxygen is vaporized prior to entering a combustion device to improve mixing and combustor performance.

Abstract: A device for separating a gas-liquid mixture, wherein a liquid part is in the form of small particles by separating and coagulating the liquid particles in a separation surface including, at least one region of an inner wall surface of a cyclone, the separation surface comprised of the at least one region; at least one fibre lining material that is formed as one of a knitted fibre and a non-woven fibre with a fibre thickness between about 5 and 500 ?m and a porosity between about 60% and about 90% applied to the inner wall; and a plurality of narrow flow chicanes formed by the at least one lining, wherein at least a portion of the inner wall surface of the cyclone passed by the gas-liquid mixture rotating around a cylinder axis comprises the plurality of narrow flow chicanes.

Abstract: The present air cleaner includes: a cleaner case having a bottom wall, a circumferential side wall provided with an air inlet in its lower part, and a support wall formed on the bottom wall inside the circumferential side wall; and a cylindrical cleaner element supported on an upper end portion of the support wall. An air chamber is defined by the cleaner case, the support wall, and the cleaner element so as to surround the cleaner element and the support wall. A bottom of the cleaner element is inclined at an angle to the bottom wall of the cleaner case so that a distance between the bottom wall of the cleaner case and the bottom of the cleaner element increases from a side opposite to the air inlet toward an air inlet side.

Abstract: An integrated and modular infrastructure resource system (IRS) is herein described. The IRS includes one or more infrastructure modules adapted to fulfill a given infrastructure needs such as electrical power, communications, water purification, and air filtration. The IRS may be controlled locally by a control module coupled to the infrastructure modules by a power bus and a control bus or remotely by a remote control-panel that communicates with the IRS by means of a communications module that includes a two-way communications device. The power bus and control bus act to network all of the provided infrastructure modules into an integrated system. Maintenance and logistics for a plurality of IRS's may be managed remotely by a single remote control panel.

Abstract: A treatment system to efficiently remove lead from dust contained in extracted cement kiln combustion gas while reducing facility and running costs. A treatment system 1 comprising a probe 3 for extracting a part of combustion gas, while cooling it, from a kiln exhaust gas passage, which runs from an inlet end of a cement kiln to a bottom cyclone; a first classifier 5 for separating coarse powder from dust contained in the combustion gas extracted; a dust collector 7 for collecting dust from the extracted gas containing fine powder discharged from the first classifier 5; and a second classifier 8 for dividing dust discharged from the dust collector 7 into fine powder and coarse powder, and others. Since more lead is distributed on the fine powder side classified by the second classifier 8, lead can efficiently be removed without using chemicals and the like.

Abstract: The invention relates to a device for filtering contaminants, such as particulates and vapor phase contaminants, from a confined environment such as electronic or optical devices susceptible to contamination (e.g. computer disk drives) by providing an improved reduced fiber filter.

Abstract: Hydrogen production is provided via integrated closed-loop processing of landfill gas (LFG) and solid biomass feedstocks such as various agricultural wastes with minimal environmental impact. LFG is purified of harmful contaminants over a bed of activated charcoal (AC) and is catalytically reformed to synthesis gas, which is further processed to pure hydrogen via CO-shift and pressure-swing adsorption stages. Biomass is gasified in the presence of steam with production of a producer gas and AC. The producer gas is mixed with LFG and is processed to hydrogen as described above. High-surface area AC produced in the gasifier is used for the purification of both LFG and producer gas. An integrated processing of LFG and biomass offers a number of advantages such as a high overall energy efficiency, feedstock flexibility, substantial reduction in greenhouse gas emissions and production of value-added product-biocarbon that can be used as a soil enhancer.

Abstract: A planar omni-directional inlet assembly is provided for installing on a device, such as a dry filter unit, that draws a fluid medium, such as ambient air, to collect particulate matter suspended in the fluid medium onto a filter. The inlet assembly includes an annular platform removably positionable on the device; an annular nozzle to direct the air from the platform; an annular impactor disposed downstream of the nozzle; a housing that disposes the filter downstream of the impactor; and an exit for passing the air from the filter to the device. The impactor presents a flow obstacle for a portion of the particulate matter. The housing directs the air through the filter. The housing includes a base with a first cavity and a lid with a second cavity such that the filter is disposable between the first and second cavities.

Abstract: Multiple designs and methods for aerodynamic separation nozzles and systems for integrating multiple aerodynamic separation nozzles into a single system are disclosed herein. These aerodynamic separation nozzles utilize a combination of aerodynamic forces and separation nozzle structure to induce large centrifugal forces on the gases that in combination with the structure of the nozzle are used to separate heavier constituents of the process gas from lighter constituents. In some embodiments a number of separation nozzles are combined into a single system suitable for dynamic processing of a process gas. In other embodiments the separation nozzles are temperature controlled to condition the incoming gas to a temperature in order to encourage a phase change in certain constituents of the gas to occur within the nozzle to further enhance separation.

Abstract: A method and apparatus for practicing the method are provided for separating droplets of finely aerosolized elemental mercury from a gaseous stream in which the droplets are dispersed. In the method a gold plated metallic capillary surface is contacted with the gaseous stream, causing the aerosolized droplets to deposit on the capillary surface and by capillary action to coalesce with other of such droplets to form increasingly large drops of mercury. The surface is oriented to allow the mercury to flow by gravitational forces and capillary action to the lowermost portions of the surface, at which it accumulates, and is then collected at a suitable vessel.

Abstract: A recycling mechanism is provided for use with a compact dedusting apparatus to clean the contaminate-laden air discharged from the dedusting apparatus for subsequent re-use by the dedusting apparatus. The recycling mechanism provides a closed loop air containment system that retains the air within the apparatus without providing discharge to the atmosphere. The recycling mechanism includes a cyclonic separator that removes most of the dust and contaminates from the air discharged from the deduster. The air discharged from the cyclonic separator is passed to an inline high efficiency synthetic cartridge filter for final cleaning before being passed back into the fan that drives cleansing air through the deduster. The contaminant material removed by the cyclonic separator is collected by an air tight dust collection container installed at the cyclone outlet for subsequent removal from the system.

Abstract: A process to separate solids from a solids laden gaseous flow containing more than 100 mg/Nm3 solids by separating solids from the gaseous flow using a gas-solids separator resulting in a gaseous flow containing less than 50 mg/Nm3 solids and an underflow having the separated solids and part of the gaseous flow as fed to the gas-solids separator; separating part of the solids from the underflow in a cyclone wherein solids and a gaseous flow containing still some solids are obtained; contacting the gaseous flow obtained with water to separate the solids and obtain a gaseous flow containing between 0 and 50 mg/Nm3 solids; and combining the gaseous flows which are poor in solids.

Abstract: A spark suppression device includes a plurality of blades or vanes that are mounted transversely in a duct of an air handling/dust collection system communicating with a spark source. A controlled flow of air carries sparks from the spark source through the spark suppression device. Sparks are suppressed by turbulence created in the airstream from the blades that have a downstream curvature. The turbulence strips away a hot air bubble surrounding a spark ember, thereby effectively cooling the spark and significantly reducing combustion at the spark ember. Other attributes of the invention contributing to spark suppression include an overlapping arrangement of the blades that results in high-velocity impact of the sparks against the blades, thereby breaking up the spark embers into smaller embers, and creation of rapid increased pressure within the spark suppression device that also helps to strip away the spark ember from the surrounding hot air bubble.

Abstract: In a system for gas cleaning which has at least one casing (1) with a first chamber (31) into which the gas to be cleaned can be flowed, and with a second chamber (33) from which the cleaned gas exits, wherein a filter device (35) which can be flowed through by the gas is arranged between the chambers mentioned and has filter media both for the separation of solid particles and for dehumidifying the gas by separating out coalesced liquid, the system has, upstream of the filter device (35), an arrangement (11, 37) for preliminary dehumidification of the gas.

Abstract: A device for eliminating oil particles from the crankcase ventilation gas of an internal combustion engine. The device is located in the flow duct of the gas that runs from the crankcase to an induction tract of the engine. The device includes an oil separator in the form of an outlet for the gas with a deflection of the flow, causing the oil particles to be deposited on a baffle surface and thus to be eliminated from the crankcase ventilation gas flow. The device has an infeed cross-section, which lies upstream of the baffle surface when viewed from the flow direction of the crankcase ventilation gas, and which is sub-divided into several infeed sub-sections. The baffle surface is a solid surface that is devoid of perforations. The baffle surface is configured on a valve body, which lies downstream of the infeed sub-sections when viewed in the flow direction of the gas, and which is pre-tensioned by a force.

Abstract: An anti-snow module designed for installation into an air filter housing includes a support plate configured for support in the housing. A partition is provided for mounting into the interior of the housing of the air filter. A valve plate is configured to seals the housing of the air filter below a predetermined differential pressure existing between the interior of the housing of the air filter behind the valve plate and the exterior of the housing of the air filter and open when the differential pressure exceeds a predetermined differential pressure value. At least one guide rail is provided on which the valve plate is slideably supported by at least one guide sleeve provided on the valve plate.

Abstract: Assembly to separate out liquid frotfi a multiphase fluid flow, comprising a scrubber, a column, a separator or other conventional separation equipment, combined with a deliquidizer that is connected as a preseparator to the fluid inlet. in that the deliquidizer functions according to a cyclone principle. With the assembly according to the invention the deliquidizer is modified such that it can be combined with conventional separation equipment such that a surprising improved technical effect is achieved. More specific the improved technical effect is achieved for assemblies where the deliquidizer is vertically oriented placed outside conventional separation equipment, with main flow direction upwards or downwards, or with the deliquidizer placed within conventional separation equipment.

Abstract: Devices for separating impurities from the lubricating oil of an internal combustion engine, the devices at least having a filter element and a housing provided with a screw cap. The screw cap and the filter element include a detachable connection arrangement which can be brought into contact and are used to transmit axial tractive forces. A first device is characterized in that the connection arrangement can be brought into contact by rotating the screw cap in the loosening rotational direction thereof and can be disengaged by rotating the screw cap in the tightening rotational direction thereof. A second device also includes a centrifuge located in the same housing, a first connection apparatus, corresponding to the above-mentioned connection apparatus being provided between an intermediate cap and the filter element, and a second connection apparatus being provided between the screw cap and the intermediate cap.

Abstract: Embodiments of the invention relate generally to systems used to measure mercury in gaseous emissions. In one aspect, the invention is directed to the use of silicon carbide as material for a thermal pyrolysis unit. In another aspect, at least one of silicon nitride, silicon boride, and/or boron nitride is used as material for a thermal pyrolysis unit. In another aspect, the invention is directed to an improved pyrolyzer design, in which a thermal pyrolysis unit comprises a tailpiece that allows water to be injected at the heated exit of the thermal pyrolysis unit. In another aspect, the invention is directed to the use of a coalescing filter in a scrubbing unit. In another aspect, the invention is directed to the use of a hydrophobic filter element in a scrubbing unit. One or more of these elements may be used in a conditioning module of a continuous emissions monitoring system, for example.

Abstract: A method of operating a plurality of clean room in a compound within a common enclosure and supplying each room with filtered air by a blower-filter unit by arranging the clean rooms and the blowers connected thereto in two parallel spaced rows with a corridor therebetween, and permitting filtered air to escape the clean rooms from beneath the walls of the clean rooms. Continuous operation of the blowers produces a bubble-like volume of air surrounding the blowers which consists primarily of clean, recirculated air escaping from the clean rooms. By arranging the clean rooms and blowers so that the clean air bubble produced by each blower overlaps the bubbles produced by at least two other blowers, the entire compound can be contained in a highly purified atmosphere consisting primarily of recirculated filtered air. A portion of the air from one or more clean rooms may be discharged in an upward direction through an opening in its top wall.

Abstract: A membrane separation process for the enrichment of at least one gas component in a gas flow, especially for the oxygen enrichment of the air and/or for the enrichment of carbon dioxide using a membrane separation device (10), which is a part of a membrane separation unit (2) and includes at least one membrane. The gas is separated into a retentate (8), which is discharged on the retentate side (12) of the membrane, and a permeate (9), which is discharged on the permeate side (11) of the membrane. To allow the separation of gases or the enrichment of a gas component in a gas flow at a low energy consumption rate and at low investment and production costs, the pressure of the gas stream is lowered before entering the membrane separation unit (2) so that pressure on the permeate side (11) is lower as compared with the inlet pressure.

Abstract: A system for sequestering carbon emissions from a fuel combustor generally includes a combustion gas extraction module for extracting combustion gas from a fuel combustor and a greenhouse facility for receiving the extracted combustion gas and having at least one vegetation supporting soil bed for absorbing carbon dioxide from the received combustion gas. The extraction module includes a particulate removal unit for removing pollutants from the extracted combustion gas and a heat exchanger in downstream fluid communication with the particulate removal unit for cooling the extracted combustion gas.

Abstract: The present invention provides an improved separator for use in hydrocarbon cracking process.

Abstract: In order to provide a device for separating wet paint overspray from an exhaust air flow containing overspray particles, wherein the overspray particles pass into the exhaust air flow in an application region of a painting assembly and wherein the device comprises at least one separation device for separating the overspray from at least a part of the exhaust air flow, in which clogging of the separation device with wet paint overspray is substantially prevented during a cleaning operation and/or ingress of precoat material into the application region from the region of the separation device is substantially prevented during a precoating operation, it is proposed that the device comprises at least one closing device, by means of which the flow path of the exhaust air flow from the application region to the separation device can be intermittently closed off at least partially, and at least one precoat feeding means, which discharges a precoat material into the exhaust air flow downstream of the closing device.

Abstract: A spark suppression device includes a plurality of blades or vanes that are mounted transversely in a duct of an air handling/dust collection system communicating with a spark source. A controlled flow of air carries sparks from the spark source through the spark suppression device. Sparks are suppressed by turbulence created in the airstream from the blades that have a downstream curvature. The turbulence strips away a hot air bubble surrounding a spark ember, thereby effectively cooling the spark and significantly reducing combustion at the spark ember. Other attributes of the invention contributing to spark suppression include an overlapping arrangement of the blades that results in high-velocity impact of the sparks against the blades, thereby breaking up the spark embers into smaller embers, and creation of rapid increased pressure within the spark suppression device that also helps to strip away the spark ember from the surrounding hot air bubble.

Abstract: A system is disclosed which incorporates low pressure drop contaminant removal from gas phases or streams, which advantageously can be used to enhance efficiency, improve humidity characteristics, and reduce capital cost of air handing systems such as HVAC systems and the like. Placement of the low pressure drop contaminant removal mechanism for enhancing effectiveness of same is also disclosed.

Abstract: A device and method for preventing ingression of contaminants and moisture and for removing moisture from a fluid reservoir, the device comprising a fluid reservoir for supporting a fluid therein, a fluid reservoir opening for allowing an exchanging of air between an interior of the fluid reservoir and the ambient surrounding, and a membrane-based reservoir dryer located in fluid communication with the fluid reservoir, the membrane-based reservoir dryer comprising a source of compressed gas and a membrane dryer for drying the compressed gas to increase the capacity of the compressed gas for absorbing moisture from the fluid in the reservoir.

Abstract: To improve the way in which a fuel cell is installed, especially in the case of fuel cells on board electric traction vehicles, the oxygen needed for supplying the fuel cell is produced in situ by separating the nitrogen from the ambient air continuously, without a change of state. Thus, an electric power pack comprises a stack of electrochemical cell elements each possessing a cathode and an anode, in electrochemical coupling relationship with an electrolyte, and an electrical output circuit suitable for connecting the cathode and the anode through a load, a device for delivering fuel to the anode and an on-board oxygen generator based on a separator, for separating the oxygen and nitrogen of the ambient air without a change of state, in order to supply the cathode of said cell elements. According to a preferred embodiment, the separator is of the nitrogen pressure swing adsorption type.

Abstract: A compressed air filtering cartridge includes a housing and a filter in the housing, the filter having a thermal vent. In one embodiment the filter includes a wall portion having a first condition when below a predetermined temperature range in which the wall portion blocks flow of air between opposite sides of the wall portion. The wall portion has a second condition when above the predetermined temperature range in which the wall portion does not block flow of air between opposite sides of the wall portion. The cartridge may be part of a compressed air system, between a compressor and an air dryer.

Abstract: The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the nozzles; a controller with logic for instructing the actuator to automatically move the nozzle or nozzles across the surface of the filter; a collection device and suction device downstream of the filter; and ducting to transport the fluid between parts of the system. In one embodiment, a second collection device is used downstream of the suction device to provide additional particulate removal. There are three methods proposed for providing high pressure cleaning fluid to the filter face: 1) rotating the filter and rotating the jet about an axis outside of the filter; 2) moving a nozzle in two perpendicular directions (i.e., x-y); and 3) rotating a radial nozzle about the central axis of the filter.

Abstract: A combined building air-conditioning unit and NBC protection system, containing an enclosed space housing a building air-conditioning unit and further including a plurality of chambers, a first chamber having an ambient air inlet port, one prefilter and a blower for sucking air through the prefilter, a second chamber having a valve including an open and closed state, receiving air from the blower and accommodating a C-detector and a valve actuator responsible, at least indirectly to, and operable by, the C-detector, and a third chamber housing at least one C-filter and a blower for sucking air from the second chamber via the C-filter into the building when the valve is in its closed state. A method for economically controlling air purity within a protected space is also provided.

Abstract: Powder overspray that is extracted from a spray booth is recovered back to a powder supply that is used to supply powder to the spray guns inside the spray booth. The powder overspray extracted from the booth is separated from the high flow air stream by a separator such as a cyclone separator. The powder falls into a transfer pan and a vacuum is used to convey the powder from the transfer pan to a vacuum receiver. The powder is then discharged to the feed hopper in the feed center. The use of a vacuum to convey powder from the cyclone to the feed center in effect permits substantially all of the powder overspray to be recovered from the spray booth directly to the feed hopper with minimal dwell or residence time within the cyclone or vacuum receiver subsystems during a spraying operation. The receiver can be rotated for easy cleaning, and the vacuum line cleaned by one or more cleaning elements drawn through the vacuum line.

Abstract: An operating room filter system connectable to a surgical body gas evacuator, such as a trocar, that includes a carbon monoxide filter media that removes carbon monoxide from a surgical waste gas. In addition, the inclusion of further filter media upstream of the carbon monoxide filter media inhibits the saturation of the carbon monoxide filter media to thereby provide an extended life to the filtration system.

Abstract: Catalyst losses are prevented in riser reactor systems by using a low inlet velocity for the first cyclone separator in each multi-stage cyclone separator in the reactor. Catalyst particles not separated from the product output flow in an oxygenate-to-olefin reactor are also recaptured by cooling the product output flow and passing the flow through an electrostatic precipitator.

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

Abstract: A modular filtration assembly for filtration of fluids, the capacity of the assembly depending upon the selected number of filtration modules included in the assembly. Each of the modules is made up of two identical housing members connected together in inverse, head-to-tail configuration and providing for inflow and outflow of fluid to and from a filter unit disposed in a recess formed by the two housing members. A housing inlet and housing outlet serve the function of assembly inlet and assembly outlet when the modules are assembled to one another to form the filtration assembly, providing for modularity and affording flexibility of capacity of the assembly.

Abstract: A filter device has a filter housing (10) receiving a first filter element (12), through which a medium may flow in a given direction, and has a bypass device (22). Along with the first filter element (12), a second filter element (32) is provided. The filter elements are arranged in series, one behind the other, in the direction of flow. When the bypass device (22) is activated, the second filter element (32), immediately following in the direction of flow, filters the medium. The second filter element thus takes over the main filtration of the medium on actuation and operation of the bypass device, since the first filter element is essentially no longer available for a filtration process due to the bypass device.

Abstract: A microimpactor device for separating particles from a fluid stream includes a plurality of microimpactor in a two-dimensional array. Individual microimpactors are separated by a distance of about 3 to 20 times the microimpactor width. This spacing provides a device that operates well at low pressure drops across the device. Particles borne in a fluid stream tend to accumulate on both the front and rear sides of the microimpactors, thereby increasing the efficiency of the device.

Abstract: An auxiliary dust collection system can be interposed between a sander or other dust producing tool and a vacuum source, e.g., shop vacuum. A cyclonic separator is connected by a flexible hose to the tool and by another hose to the vacuum source. The cone of the separator is mounted onto the lid of a drum into which the dust precipitates. For a tool that has its own blower, the vacuum source can be omitted, and the air leaving the outlet duct of the separator can be filtered and returned to the ambient. A drop in silencer formed of a sleeve or tube of acoustic foam can be positioned into the inlet side of a filter cartridge following a cyclonic separator. The silencer absorbs a significant fraction of the process noise. The acoustic foam can have a textured surface on the sound-facing side.

Abstract: The invention relates to an apparatus for preparing pure carbon dioxide (CO2) from a gaseous CO2 containing product, which apparatus comprises a processing line which comprises at least an inlet for the gaseous product, means for removing water-soluble impurities from the product, compression means for compressing and pressurising the product, cleaning means for removing further impurities from the product, as well as storage means for collecting and storing the purified CO2, which elements are interconnected by means of suitable piping. According to the invention, the compression means comprise at least one screw compressor so as to provide an apparatus for preparing pure carbon dioxide from a gaseous CO2 containing product which has a higher efficiency, which is of simpler, cheaper construction and which is easy to maintain.

Abstract: The air pre-cleaner includes a housing, a drain valve, and an air exhaust pipe. The housing is provided with an air inlet. The drain valve is disposed in the housing and is configured to drain impurities separated from intake air entering the housing through the air inlet. The intake air is exhausted from the housing through the air exhaust pipe. An upper portion of the air exhaust pipe protrudes inside the housing, and the air exhaust pipe has a lateral section with a first end portion that is disposed near the air inlet that is sharper than an opposite portion thereof.

Abstract: The invention relates to a device for separating dust from flue gases from combustion plants, especially solid fuel combustion plants, comprising at least one dust filter via which the flue gases are guided, and by means of which the dust from the flue gases can be filtered out as it passes through the dust filter. In order to produce a device which separates dust in a highly efficient manner and which can be operated in a highly reliable manner and be used to heat combustion air for the combustion plant, the at least one dust filter is embodied as a bulk material filter in whose bulk material heat from the flue gases can be collected when the bulk material is cross-flown by the flue gases and by means of whose bulk material heat collected from the flue gases when the combustion air of the combustion plant flows through the bulk material filter can be given off to said combustion air.