Abstract: A separator for separating a mixture of a vapor (or as gas, or a liquid) and of a liquid (or a solid) by centrifuging the mixture inside a chamber (2) which encloses at least one cell constituted by: a central core (120); at least one circulation tube (100); a swirler device (102) for imparting swirling flow to the mixture at the inlet to the, or each, circulation tube; a collector tube (103) for collecting a less dense portion of the initial mixture, said collector tube being installed at the outlet from the, or each, circulation tube and optionally being provided with an unswirler device (104) for unswirling the flow; at least one extractor device (105) for extracting a denser portion of said mixture; at least one collector device (107) for collecting said denser portion; and reinjection means for reinjecting a part of said denser portion into the mixture to be separated or being separated; wherein the reinjection means comprise at least one extractor duct (130) connecting the collector device (107) and the

Abstract: An apparatus for removing acid constituents such as HCl and/or SO.sub.x from the waste-gas generated by furnaces,incinerators and the like wherein the calcium-containing powder material is blown into a waste-gas duct to form a lean fluidized flow until it reaches a vertical moving bed filter having two louvered walls between which granular packings are filled. The process for removing the acid constituents is accomplished by chemisorption which occurs first in the duct and then in the filter bed. A recycled use of the powder is preferred. The filtered waste-gas is further purified by an electrostatic precipitator. The use of a moving bed filter permits the use of a greater amount of calciumaceous powder relative to the acid gases without increasing the electrical load on the electrostatic precipitator.

Abstract: Apparatus for removing particulate from gases. The apparatus includes an inlet conduit, an outlet conduit, and a cylindrical gas processing chamber positioned between and interconnecting the inlet conduit and outlet conduit. The processing chamber is also connected to a particulate collection chamber by a channel. The gas processing chamber includes a cylindrical wall. A hollow cone-shaped deflector member is positioned in and spaced away from the walls of the processing chamber and is positioned between the inlet and outlet conduits. Gases entering the apparatus flow through the inlet conduit and contact the deflector member. The deflector member directs the major portion of gases from the inlet conduit radially outwardly toward the wall of the gas processing chamber. The gases deflected radially outwardly travel around the deflector member and along the wall of the processing chamber.

Abstract: An improved cleaning apparatus 10 is described wherein a shroud 21 with a moveable collar 22 is provided on the outside surface 12b of a cyclone 12 in an air outlet 13d from a container 11 leading to the cyclone 12 to dislodge accumulated dirt in the air outlet when a fan 18 drawing air through the apparatus is stopped. The apparatus preferably has a disc 20 which prevents long strands, such as hair, in the dirt from clogging the air outlet 13d from the container 11. The apparatus is preferably in the form of a vacuum cleaner.

Abstract: An arrangement for removing soot particles and other solid particles from exhaust gas of power vehicles, comprises a soot deflector arranged to receive exhaust gas and having a first outlet for a cleaned exhaust gas stream and a second outlet for a soot-containing exhaust gas stream, and a soot collector connected with the second outlet and arranged for removing soot, the soot collector being formed as an exhaust gas-impermeable collecting container fixedly mountable in a power vehicle, the collecting container having a soot removing pipe arranged to extend through a vehicle wall outwardly and having a closeable and openable end, the collecting container also having a filter-covered exhaust gas outlet pipe, the soot collector having a removable closing cover arranged to close and to open the one end of the soot removing pipe, and a filter which covers the exhaust gas outlet pipe.

Abstract: A method and apparatus are described for contacting a gas with a liquid by injecting gas at high tangential velocity into a contacting zone so as to form a large centrifugal force in the zone and allowing the gas to transit across a liquid inlet in the zone so that liquid is drawn into countercurrent contact with the gas. One embodiment of the apparatus consists of a closed vessel (1) having an internal baffle (5), and inlet (3) for gas or vapor injection and a gas or vapor outlet (4). The internal baffle defines an upper gas-liquid contacting zone and a lower storage zone for liquid (8). Liquid is drawn into the contacting zone through the liquid inlet dip-pipe (7) and after contact with the gas can flow back to the storage zone via the peripheral gap (6).

Abstract: An apparatus for treating a dust-containing gas which comprises at least one vertically arranged filtration tube made of a solid porous material, a first filration tube supporter provided at the outer and upper part of the at least one filtration tube, a second filtration tube supporter provided at the outer and lower part of the at least one filtration tube, sealing means for dust respectively provided at a connecting part between the first filtration tube supporter and the at least one filtration tube and at a connecting part between the second filtration tube supporter and at least one filtration tube, an upper case with a dust-containing gas inlet which is placed above the first filtration tube supporter, a middle case with at least one clean gas outlet for supporting the first and second filtration tube supporters and a lower case with a dust discharging port which is placed below the second filtration tube supporter.

Abstract: Compact gas-liquid separator comprising a cylindrical separation chamber including an inlet head and a degasifying vessel. The inlet head comprises an inlet tube supporting a nozzle positioned adjacent to the inner wall of a cover situated within the axis of the separation chamber. The cover includes a cylindrical portion closed by a convex cap and extends toward the bottom by a skirt closing the degasifying vessel and having openings. Within the axis of the nozzle the cylindrical portion has an opening of a diameter greater than that of the nozzle and is spaced from the nozzle. The cover includes a deflector having a central opening and being inclined with respect to the axis of the cylindrical portion of the cover and disposed within the axis of the nozzle. An outlet tube for the gas is positioned in the inlet head.

Abstract: Cyclonic separator apparatus for extracting entrained lint particles from an effluent air stream prior to discharge into the atmosphere. A rotary filter is combined with a cyclonic separator of the type having a vertical settling chamber for separating relatively dense fiber product from airborne lint entrained in a product stream. The separator apparatus includes a housing forming an air stream inlet, a lint discharge outlet and a clean air outlet. A rotatable screen is interposed between the air stream inlet and the clean air outlet whereby the entrained lint is accumulated on the screen as the effluent air stream flows through the screen for discharge into the atmosphere. The accumulated lint deposit is presented to the lint discharge outlet as the screen turns. A first fan blower is coupled to the separator for inducing an upwardly moving inner vortex for entraining the airborne lint, and coupled to the filter inlet for discharging the entrained lint onto the rotatable screen.

Abstract: This invention relates to a device at a dust filter for cleaning a gas flow from dust. The dust filter consists of an electrostatic precipitator or fabric filter (bag filter) and comprises a filter chamber (10) with gas inlet (12) and gas outlet (13). At the gas inlet a precollector (30) in the form of a louvre collector (31) is located for separating coarse dust, i.e. dust with a diameter exceeding 50-75 microns. In the order to obtain good collection at the louvre collector (31), the collected dust is evacuated by means of a partial gas flow, which is passed to a dust hopper (34) and a dust discharge unit (35). According to the invention, the dust discharge unit (35) comprises a cyclone collector (36), the inlet portion (37) of which is integrated with the dust hopper (34), and the outlet portion of which or central pipe (38) is formed with a passageway (39), the mouth (40) of which is located in the filter chamber downstream the louvre collector.

Abstract: A vacuum material transporting system and more particularly, a vacuum material transporting system having an improved dust collecting means for collecting lightweight fines which are carried over from the main material stream.

Abstract: A continuously cleaned bag filter provides a second filter stage for removing dust from air discharged from a cyclone or other primary separator. The primary separator removes the majority of particulate matter from air delivered thereto. In the bag filter dust is filtered from the air, which is discharged through the filter walls. The filtered dust is conveyed along the bottom of the bag filter by an air conveyor and is recirculated back to the primary separator for removal thereat. The air conveyor and a recirculating air blower, the latter providing impetus to carry dust back to the primary separator, are balanced relative to the inflowing air to the bag filter from the primary separator; such balance prevents excessive back-pressure or negative pressure in the filter bags that would otherwise interfere with ordinary air discharge therefrom.

Abstract: A protective spark eliminating system for removing burning particulates from flue gases prior to introducing the gases into a filter baghouse. The protective system includes a housing enclosing a separating chamber having a gas inlet in the side of the housing for directing a stream of flue gases into the housing, and a gas outlet in the top of the housing for conducting the flue gas stream out of the chamber. To effect separation and removal of the burning particulates from the gas stream, the housing is provided with a secondary gas system which is adapted to maintain a downwardly flowing curtain of gas across the width of the flue gas inlet to direct the burning particulates in the flue gases downwardly into a hopper at the base of the housing as the flue gases enter the chamber.

Abstract: A particulate material collecting apparatus including a cylindrical member defining therein a spiral flow chamber for forming a spiral flow of gas therein, an inlet duct and an outlet duct connected to the cylindrical member tangentially to the inner circumferential surface thereof, and a hollow inverted pyramidical member secured to the lower portion of the cylindrical member. A spiral flow guide plate having a convex surface curved radially outwardly of the cylindrical member is interposed between the cylindrical member and the inverted pyramidical member. The spiral flow guide plate is positioned so as to define two openings, one opening being located on the upstream side of the spiral flow of gas and the other opening being located on the downstream side of the spiral flow of gas.

Abstract: A combination magnetic disk storage device and filter system for internally recirculating filtered air and reducing foreign particle contamination in the shroud area of a magnetic disk unit. The storage device and system having an air filter placed between an enclosed fixed disk and a removable disk received in a disk cartridge. By spinning the disks for a predetermined time prior to using the disk drive unit, the disks coact with the filter in circulating and filtering the air in the disk housing and the disk enclosures to substantially reduce the particle count to prevent read-write head crashes.

Abstract: A waste collector for a sewing machine uses first and second different collection boxes, the second of which has a larger diameter suction hose than the first. The box having the larger diameter suction hose is coupled to the blower motor only through the first box via an airflow path which is more restricted than that of the larger suction hose.

Abstract: An improved filter holding device for an air filter that forms a chamber around the periphery of the air filter. A vacuum is created within the chamber to carry any unfiltered air to the upstream side of the filter and thus prevent any air from bypassing the filter and contaminating a clean room.

Abstract: A particulate separator of the concurrent flow type includes an inner cylinder mounted concentrically within a tapered conical outer cylinder which is closed at the outer return end. A fan unit is secured within the return end of the outer cylinder to draw air inwardly through the center cylinder, impart a centrifugal force thereon and imparting a tangential spin to the air moving outwardly and then rearwardly and back through the outer conical cylinder. The particulate matter within the fluid moves outwardly to the periphery of the outer cylinder as a result of centrifugal forces. The tangential spin imparted to the air cause the air to move in spiral return path with the conical cylinder establishing a decreasing cross section.

Abstract: A contact compartment for intermixing dust or fume laden gases with solid substances, in a turbulent or fluidized layer, the gases being the turbulence carrier, and the solid substances being the turbulence material. The intermixing action induces the noxious components of the dust or fume laden gases to absorptively react or combine with the solid substances and form absorption compounds. In order to prevent the conventional formation of inhomogeneous sections in the turbulent or fluidized layer, during the intermixing action, the turbulence material and turbulence carrier, present in the compartment, flow transversely through at least one revolving drum having a perforated peripheral wall and equipped with a charge of filled-in regular or irregular-shaped bodies.

Abstract: An apparatus (10, 110) and method are disclosed for cleaning gas-contaminated particulate material such as powder metal. The gas-contaminated powdered metal is passed through a vacuum chamber (12, 112) having a gas outlet (14, 114) connected to a vacuum pump (119) which evacuates the chamber (12, 112). The vacuum chamber (12, 112) has first (20, 120) and second (22, 122) ends with a flow passage at each end for directing the flow of the particulate material into and out of the chamber (12, 112). The gas-contaminated particulate material is subjected to an electric field in the vacuum chamber (12, 112) to electrically charge the gaseous contaminates and cause separation of the gaseous contaminates from the powdered metal to facilitate the removal (14, 114) of the gaseous contaminates from the vacuum chamber (12, 112). First (24, 124) and second (26, 126) containers are connected to the flow passages of the vacuum chamber (12, 112).

Abstract: A device for separating a high pressure polyphase mixture consisting of a gas charged with liquid particles, and particularly a mixture of ethylene and polyethylene, which comprises a cylindrical vertical enclosure into which extends an inlet means for supplying the mixture thereto and which is provided at its lower end with an outlet for discharging separated liquids; a vertical cyclone in communication with the enclosure for receiving separated gases therefrom and having an outlet at its upper end for discharging gases separated in the cyclone and a liquid outlet at its lower end for discharging separated liquids therefrom; and an ejector comprising a nozzle, through which the polyphase mixture is fed, a mixing zone connected to the liquid outlet of the cyclone and a diffuser section for reducing the speed of the resultant mixture and being connected to the inlet means for supplying the polyphase mixture to the enclosure.

Abstract: A method and apparatus for stripping entrained organic vapor and solid particulate matter from a pyrolytic off-gas stream is disclosed. The off-gas is introduced at the top of a conical chamber having a variable speed "squirrel cage" rotor at its top. The wet, dirty, off-gas is drawn into the rotor from below and impinged upon the chamber walls which causes part of the organic vapor to condense and flow to the chamber bottom, thereby cleaning the chamber walls. A portion of the impinged gas is recirculated through the rotor while the remainder exits at the chamber bottom. The ratio of recycled gas to through gas is controlled by the speed of the rotor. Heating and cooling coils on the chamber walls are operable to control the rate of condensation.

Abstract: An exhaust gas pollution control system (10) for purification of exhaust gases passing from a combustion chamber. The control system (10) includes a housing element (14) which extends in a longitudinal direction (12). The housing element (14) encompasses a plurality of exhaust gas purification elements (16) each of the elements (16) being discrete in nature. Each of the exhaust gas purification elements (16) form a generally donut shaped contour having a central passageway (32) and are formed in an open contour for introduction of the exhaust gases internal to the particular purification element (16). The exhaust gases enter each purification element (16) through an entrance passageway (44) and are accelerated therein. Particulate matter found in the exhaust gases are ejected through particulate openings (54). The exhaust gases are catalytically converted within internal chamber (40) of purification element (16) and then are reintroduced to central passageway (32) through gaseous ejection openings (58).

Abstract: A filter box contains within a rotatably mounted filter, structured as a drum, a fiber preseparator cooperating with such filter. The fiber preseparator has a ventilator at its inlet and operatively flow communicates with a fiber separator. This fiber separator contains a movable plunger or equivalent structure, by means of which the separated fibers are compacted and ejected into a collecting container. The air flowing through the filter effluxes through an opening in the filter box into the machine room or area containing the textile machines with which the filter box is used. The air responsible for transport of the fibers from the preseparator into the fiber separator, following separation from the fibers, is returned back to the suction side of the ventilator and again into the preseparator. A suction tube cooperates with the inner side or wall of the rotating filter drum. This suction tube likewise flow communicates with the suction side of the ventilator by means of a dust separator.

Abstract: A sterile air recycling module is mounted to a wall of a room and includes a housing having an outlet for discharging sterile or clean air into the room, opposed grilled inlets for controlling the volume of air drawn into the interior of the housing from the room, and an inlet for fresh air or plant conditioned air, a supply pressure plenum chamber within the housing for discharging air through a high efficiency particulate air (HEPA) filter which is in fluid communication with the housing outlet, and a blower within the housing for withdrawing air from a negative pressure plenum within the housing and an outlet in fluid communication with the supply pressure plenum, the housing inlets being in fluid communication with the negative pressure plenum.

Abstract: In an industrial dust collector comprising a gas intake dirty air chamber, a filtration clean air chamber, and a set of fabric filter bags mounted within the filtration chamber with the bag interiors in fluid communication with the gas intake chamber having a system for cleaning the filtration chamber which includes a venturi in fluid communication with both chambers to effect cleaning of the collector. A method of cleaning the filtration chamber of an industrial dust collector having fabric filter bags mounted within a filtration chamber with the bag interiors in fluid communication with a gas intake chamber is disclosed comprising the steps of evacuating dust from the filtration chamber and directing the evacuated dust into the gas intake chamber.

Abstract: A separator of particulate material from fluid or gas or fluid mixture systems comprising a separator housing having intake and discharge openings formed therein. The intake opening of the separator housing is in communication with the medium in which the particulate material is suspended. The discharge opening of the separator chamber is in communication with a cyclone type settling chamber. A by-pass line extends from the upper end of the settling chamber to the conduit which is supplying the medium to the separator housing. A plurality of closely spaced hollow discs are rotatably mounted within the separator housing and are rotated by means of an electric motor or the like. A fan apparatus is in communication with the interior of the separator housing and is adapted to draw the medium from the intake opening, thence through the space between the discs, then longitudinally through the center of the discs to a point of discharge.

Abstract: A filter box for textile machines, especially spinning machines, comprising a filter subdividing a box into a raw air chamber and a clean air chamber, and a respective inlet opening and outlet opening communicating or connected with the raw air chamber. A ventilator is connected at its suction side with the clean air chamber. The filter possesses a cylindrical form and the inlet opening is formed by an inlet connection extending approximately tangentially with respect to the filter, in order to produce a spin flow in the raw air chamber.

Abstract: A method for removing by adsorption undesirable components such as sulphur dioxide, from waste gases, particularly flue gas. Activated carbon is located between two perforated walls. The flue gas to be cleaned, traverses the activated carbon. During shutdown or low-load operation of the plant, the flue gas is already cleaned in the adsorber or still remaining in the associated apparatus section, are fed back and are passed once more through the activated carbon. The fed-back flue gases may be cooled before being passed once more through the activated carbon. An inert gas at a pressure substantially above atmospheric may be injected in the adsorber installation. The temperature and/or the oxygen content of the fed-back flue gas is monitored. The activated carbon fill is divided by heat-insulated partitions into individual sections which are charged separately with fed-back flue gas.

Abstract: In a dust separator arrangement including a battery of filter chambers, the cavity of each filter chamber is divided into an upper compartment and a lower compartment by a layer of filter medium. A tubular member has an upper orifice in the upper compartment and extends downwardly through the layer of filter medium to a lower orifice in an attached valve chamber. Two valve seats on the valve chamber define openings of the valve chamber permanently communicating with a raw gas manifold and a purging gas manifold respectively, while a purified gas manifold permanently communicates with the lower compartment, the manifolds being common to the several filter chambers. A single valve member mounted in each valve chamber may be moved between respective positions of sealing engagement with the two valve seats by an actuator.

Abstract: An apparatus for separating liquid particles from a gas-stream by passing the gas stream through a curved tube so that the liquid is caused to concentrate along the inner surface of the outer wall of the curved tube. The concentrated liquid together with some gas is passed to a liquid collecting chamber. The liquid is drained from the liquid collecting chamber and the gas is returned from the liquid collecting chamber to the main stream.

Abstract: A liquid dispensing and vapor recovery system in which an underground storage tank is connected to a first conduit for delivering a liquid, such as gasoline, to a vehicle gasoline tank or the like under the force of a pump located in the storage tank. A second conduit is connected to the first conduit and to the storage tank for diverting a portion of the gasoline in the first conduit back to the storage tank and an injector is located in the second conduit for forming a reduced pressure zone in response to gasoline flow through the second conduit. A valve unit prevents the flow of gasoline through the second conduit until gasoline is delivered to the vehicle gasoline tank. A third conduit is connected to the vehicle tank and to the second conduit at the reduced pressure zone for drawing the vapors from the vehicle tank into the second conduit for passage into the storage tank.

Abstract: A liquid dispensing and vapor recovery system in which a control unit is connected to a storage tank for the liquid and directs the liquid to a pair of conduits which pass the liquid to a receptacle and back to the storage tank, respectively. A reduced pressure zone is established in the conduit connected to the storage tank and is in communication with the receptacle for drawing vapors from the receptacle for passage back to the storage tank. The control unit prevents the flow of liquid back to the storage tank until gasoline is delivered to the receptacle and modulates the vapor flow back to the storage tank in response to the flow through the conduit connected to the receptacle.

Abstract: A cyclonic gas cleaning system is described having an elongated rotary spray header mounted centrally of an elongated housing coextensive therewith. Gas circulates helically upward within the housing while the spray header rotates and sprays a scrubbing fluid into the gas.

Abstract: In an air filter unit, after dust collected by the filter bag is shaken off and exhausted and before normal operation is effected, the air inside the filter chamber but outside the filter bag is fed into the filter bag or a separate dust collector, thereby preventing dust particles from being discharged into the atmosphere along with the clear filtered air during the initial stage of normal operation. Other advantages and details in the construction will be made clear.

Abstract: A down-flow chamber in which, from a filter in the ceiling of a working room, a germfree and dustfree flow of air is directed downwardly to a working face that is surrounded by walls with exhaust openings for the flow of air at the edges and in which, at the front, a transparent wall is mounted. Between the lower edge of the transparent wall and an exhaust grid in front of the working face there is a vertical opening of such a height that arms can be put through the opening to be able to carry out operations in the working room, wherein at the lower edge of the transparent wall a flexible lid preferably of smooth plastics material is mounted that is hanging down and is substantially extending to the exhaust grid. Further, a device is provided on the chamber that prevents the lid from moving outwardly from the vertical plane through the opening.