Abstract: Filter for hot gases, comprising a mass of grains formed of a ceramic having a high melting temperature and bonded together at contact point by molten power of the same ceramic.

Abstract: A scrubber which dries and removes contaminants from a fluid stream (a gas-liquid stream) using as a media, particulate material which can be char obtained from a gasifier, the scrubber system processing the gas and cooling liquid combined with the gas which is obtained by reactions in the gasifier. The media is fed in a continuous stream forming a downward moving column in counterflow relationship with the gas. The gas flows upward thru the particulate media and is dried and cleaned as it contacts the media. The flow relationship is such that the cleanest and dryest media and the cleanest gas contact each other. The column of media continues downward entering a liquid scrubbing section where it is disposed below the level of the liquid. There the contaminated liquid stream, passes through the media in counterflow relationship being cleaned as it contacts the media. Both the gas and liquid components of the stream are scrubbed prior to discharge of the spent media.

Abstract: An air drier tower comprises a base part (2), a reservoir (1) attached thereto, and in the reservoir a cartridge (7) containing desiccant (8). The cartridge is composed of two halves (9,10) having circular walls extending into each other to form a winding air path through the desiccant. A spring (11) is arranged between the reservoir and the cartridge in order to exert a bias on one cartridge half and accordingly on the desiccant.

Abstract: A clean room ceiling grid system having a detent means for loading filter panels into ceiling grids from a clean room. The system is operable to permit removal of the filter panels by use of a filter panel removing tool. More particularly, this clean room ceiling grid system requires no plenum space use above the grid members for either installation or removal of filter panels. The system also includes means for hermetically sealing the interface of connected ceiling grid members and means for substantially laminar flow of filtered air in clean rooms.

Abstract: The present invention relates in part to a cyclonic separator type central vacuum cleaner assembly comprising four mutually detachable sub-assemblies, including:(a) a first sub-assembly comprising a vacuum motor/exhaust housing having at one end thereof an opening through which air is drawn into the housing by the operation of the vacuum motor;(b) a second, mid-section, sub-assembly comprising a housing which is adapted to be secured to means for supporting the vacuum cleaner assembly as installed, and a vacuum cleaner inlet adapted to be secured to a system of dust collecting ductwork;(c) a third sub-assembly comprising a dust collecting housing for receiving and holding dust released from a cyclonic airflow during the operation of the vacuum cleaner assembly; and,(d) a fourth sub-assembly comprising a base plate adapted to be secured in removably fixed relation between said first sub-assembly and the second sub-assembly and having an aperture therein for permitting the flow of air between the first and seco

Abstract: A vapor handling system includes an overfill shut-off valve to provide protection for the canister from exposure to liquid fuel during a tank overfill condition which may be caused by a malfunction of a refueling nozzle. A system is provided for automatically assisting in opening the overfill shut-off valve at the conclusion of the tank refilling process to reestablish fluid communication between a fuel tank and a vapor recovery canister so that adequate fuel vapor venting from the tank to the canister can occur. The overfill shut-off valve is configured to block such fluid communication by closing a venting passageway interconnecting the tank and the canister.

Abstract: A cyclone separator formed by a plurality of parallel tubes. A portion of the tubes form a cylinder, a portion are bent radially inwardly to form a roof and a portion are bent to form a hopper. Water is passed through tubes to cool the separator.

Abstract: An electrostatic dust collector for removing particles, such as smoke particles, pollen and the like from a gas stream passed therethrough. The dust collector includes a filter element formed of narrow strips of pliable, porous dielectric material superimposed, face to face, with electrodes therebetween and so that no air gap is formed between the face to face strips. The superimposed strip is coiled or randomly packed into a non-conductive bag, such as of nylon net, and positioned in a gas stream from which particles are to be removed and the pores of the dielectric material are charged to attract in such gas stream to the walls of the charged pores by applying a voltage to the electrodes.

Abstract: A drain suitable for installation in a wooden floor comprises a body, a grate frame secured to the top of the body, a grate mounted in the frame and a projecting annular flange secured between the body and the grate frame for screw attachment to a deck of the floor.

Abstract: This invention relates to an exhaust gas purifying system for diminishing air pollution essentially comprising to purifying devices side by side in sequential combination. The purifying device comprises a casing formed with a water or liquid chemical tank having deposit collecting means and means for draining deposits and a chamber over the tank forming a downward passage fitted with strainer and a spray duct positioned in the chamber and over the strainers and having a number of nozzles directing downwardly and means for supplying clean water or liquid chemical from the tank to the spray duct, whereby exhaust gases led into this device will flow along the passage and through the strainers and purified by tiny dropped water or liquid chemical from the spray duct.

Abstract: A gas cleansing arrangement comprising a vessel (1) partially filled with liquid (32) and a gas distribution means (14) beneath the liquid surface (34). The gas distribution means (14) comprises obliquely and downwardly extending distribution pipes (26) with upwardly facing inlet openings (64) for contaminated gas and a lower opening (22). The inlet openings are each connected to a venturi device (28) having an outlet opening (31) and suction openings (29) facing the liquid (32). In use, pressurized gas urges an inner liquid surface (46) downwards in the distributor means (14), until the liquid surface (46) reaches and exposes the uppermost inlet opening or openings (64). The gas is then forced through respective venturi device (28) at a pressure drop corresponding to the height difference (h) between the inner liquid surface (46) and respective outlet opening (31).

Abstract: An electrostatic dust collector including a wall enclosing a vacuum chamber in which a target face to be subjected to dust removal is provided, an electron beam emitting device for emitting electron beams to dust on the target face so as to charge the dust negatively, a dielectric member which is provided in the vacuum chamber and has a collecting face confronting the target face and a member for imparting positive potential to the collecting face such that the dust charged negatively is attracted to the collecting face.

Abstract: A soot filter for Diesel engines has a housing (2), in which filter material (11) of mineral fibers or yarns is arranged on a support (7). To prevent the filter material from losing its three-dimensional structure necessary for the filtration in the event of yarn breakage, it is formed at least partly or completely of knitted fabric (12), which maintains its internal coherence in the vicinity of individual loops even in the event of yarn breakage because of the interlacing of the yarns in the adjacent loops.

Abstract: A single field ionizing electrically stimulated filter utilizing a non-conductive filter medium is charged by an electric field created between an ionizer space-apart from the upstream face of the filter media and an electrode placed in close proximity with the downstream face of the filter media. The ionizer and electrode are respectively supplied with differing high voltage potentials. For optimum efficiency, the electrode at least loosely contacts the downstream face of the filter media. HEPA glass filter media in sheet form is pleated and sealingly mounted in a nonconductive frame, with the pleats spaced apart by non-conductive spacer means applied across the filter media faces. The ionizer includes a plurality of ionizer wires extending across a nonconductive frame and spaced back from the frame's downstream face so that gap is maintained between the ionizer wires and the filter medium.

Abstract: An improved device is provided for cleaning particles from the plates of a two-stage electrostatic precipitator using a small stream of high velocity air which is moved over the face of the collecting cell. The cleaning device can operate without disturbing the normal operation of the precipitator. The improved cleaning device using a vacuum stream of air is particularly useful in a two-stage gas-cleaning electrostatic precipitator having a close-spaced collecting stage wherein the high voltage low voltage plates are spaced very close together, typically about 0.0625 inches apart.

Abstract: In a suction cleaner comprising a housing (10) having an inlet (11), a filter chamber (12) with a filter bag (13), a suction fan (14) with a motor (15), and an outlet passage (17) through which filtered air passes from the suction fan to an outet (16), the motor is provided with a control circuit (20) adapted to be activated by a first pressure switch (21) which is actuated by the underpressure in the filter chamber (12) in order to control the motor power at a predetermined level. According to the invention, the suction cleaner is provided with a second pressure switch (22) which is actuated by the pressure in the outlet (17) and adapted to activate the control circuit (20) when said pressure exceeds a predetermined level.

Abstract: A devolatilization apparatus is provided which removes volatiles from a variety of polymer products utilizing centrifugal forces to control the residence time of the polymer in the devolatilizer. Volatiles are efficiently removed without degrading the polymer product. The devolatilizer includes a rotatable annular chamber having an inlet, a first outlet located at a first distance from the axis of rotation of the chamber, and a second outlet located at a second distance from the axis of rotation of the chamber. Means are also provided for supplying a polymer, in liquid form, to the inlet to the annular chamber. The portion of the chamber located between the first and second outlets forms an annular pocket or subchamber. The apparatus also includes means to rotate the annular chamber at a speed sufficient to cause the liquid polymer to flow through the first and second outlets and form liquid seals at each of the outlets.

Abstract: An air filter structure is described including a plurality of filter units, wherein a first filter unit made of electrostatically charged fibrous material is utilized at the inlet side of the air filter. The first filter unit has a comparatively greater porosity than the remaining filter units and attracts and removes toner particles charged with an opposite polarity to that of electrostatically charged fibrous material in the first filter unit. Therefore, the air, with a substantial part of toner dust removed, can more easily enter into the remaining filter units for removal of smoke, resulting in increased useful life of the air filter.

Abstract: Method for cleansing gas from solid, liquid and/or gaseous contaminants, by bubbling the gas through a liquid bath (32), and by introducing the incoming gas into a distribution means (14) and causing the gas to pass in part-streams through a multiple of inlet orifices (64) located at progressively increasing depths beneath the surface (34) of the liquid (32). With increasing inlet pressure an increasing number of inlet orifices (64) are utilized for an increasing number of part-streams. The gas flow is passed from respective inlet orifices (64) through connecting means (24, 26, 28) to outlet orifices (31) located at a considerably higher height level (h) than corresponding inlet orifices (64). The gas flow is caused to flow out through venturi nozzles (28) and/or to strike against impinger or striking surfaces (39) with a minimum pressure drop corresponding to said height differential (h).

Abstract: In a suction cleaner comprising a housing (10) with a disposable filter bag (13) a movable tube piece (17) is provided which is adapted to enter the inlet opening (14a) of the filter bag. According to the invention, the tube piece (17) is provided with a control means actuatable by a pressure difference, preferably the difference between atmospheric pressure and the underpressure in the suction cleaner housing.