Abstract: An apparatus for removing dust from hot gas under pressure comprises a housing for filter units disposed in cascade between an upper inlet and a dust funnel at a lower part of the housing. Each filter unit comprises a grate array of collecting ducts to which rigid filter candles of porous ceramic tubes are connected. Clean-gas pipes communicate with the ducts and extend within the housing to a clean-gas chamber at which they open through nozzles juxtaposed with drive gas pipes capable of propelling gas through the clean-gas pipes for dislodging deposits of the filter candles.

Abstract: A device for separation of air from fiber suspensions of flotation devices which are heavily air- and foam-laden or represent a mixture of fluid and foam features a hydrocyclone whose inlet opening is arranged least 2.5 m below the outlet opening of the flotation device for the air-laden fluid or mixture. The separation section of the hydrocyclone is a slender, truncated cone-shaped body on whose pointed (thin) end the deaerated fluid is withdrawn. In this outlet opening there is a back pressure maintained, so that the inlet opening is not completely covered by the vortex of the fluid, leaving still a sufficiently free entrance cross section for the foam. Above the entrance section of the hydrocyclone a mechanical foam eliminator with a rotor is arranged, the rotor comprising an impeller wheel which is provided with radial blades. A funnel-shaped suction socket feeds the foam-air mixture to the impeller wheel.

Abstract: The invention is an air pollution abatement system which embodies four different phases. The phases are: the primary impinger section, which removes most of the contaminants by variable density rotational impingement combined with a degreasing solution; the turbo impinger section, which extracts the residual moisture and aerosols introduced within the primary impinger section; the deluge/saturator section, which scrubs the gas with water or chemicals and finally the dehydrator section which hydroextracts the moisture and introduces static electricity to trap any residual micron-sized particulates prior to exhaustion into the atmosphere. The system, while operating, is continuously self-cleaned and computer system managed.

Abstract: A separator for use in connection with a liquid bath type vacuum cleaner system. The separator includes an annular, cup-like housing adapted to rotate axially about its vertical axis for generating a centrifugal force to be applied to intake air therein; a plurality of slots on the housing for allowing dust and dirt particulates entrained in the intake air and liquid particulates from a liquid bath to be drawn into an interior area of the housing and coalesce therein, whereby the coalesced particulates will be subjected to centrifugal force and will thereby be separated from the intake air; and a plurality of exhaust slots for allowing the coalesced particulates to be forcibly expelled from the interior area of the housing as they are forced radially outwards by the centrifugal force towards and through the exhaust slots by rapid, axial rotation of the housing.In one preferred embodiment a plurality of elongated slots in the housing provides both an intake and an exhaust function.

Abstract: A high temperature ceramic filter is produced from a composition containing efractory cement, aggregate, pore forming additives, and sintering agents. The pore forming additives are synthetic or organic powders or fibers which sublimate, melt, or otherwise disintegrate to produce in situ pores in the cement during the refractory treatment of a cast filter. The filters produced are permeable to high temperature gases commonly found in a coal furnace and can be used to collect particulate matter present in those gases.

Abstract: Method and filter apparatus for the removal of volatilizable particulate material from gas streams containing the same, and the regeneration of the apparatus when removal efficiency has decreased to a selected value. The apparatus includes a filter element fabricated, in the preferred embodiment from silicon carbide whiskers which are capable of converting microwave energy to thermal energy, with the porosity of the filter element being about 25 microns.+-.50%. This filter element, when removal efficiency has decreased to the selected value, is heated uniformly with microwave energy, which couples to the silicon carbide whiskers to convert the microwave energy to thermal energy, for a time sufficient to raise the silicon carbide whisker temperature to a value to volatilize the volatilizable particulate matter for discharge as a gas. Typically, the microwave energy is about 2.45 GHz and 1000 to 3000 watts.

Abstract: An oil deaerator device for an oil tank comprises a cylindrical chamber having a tangential inlet duct in its lower portion for the introduciton of pressurized oil to be deaerated, tangential outlet ducts for the deaerated oil in the upper portion of the chamber, and an axial outlet duct, also in the uper portion of the chamber, for the discharge of air from the chamber.The device, which operates on the vortex principle, is fitted within the tank in the upper portion thereof above the normal level of oil in the tank.

Abstract: Method and apparatus for removing material from a gas. A mist created by a piezoelectric ultrasonic transducer is contacted with the gas and both gas and mist are passed through baffled separators. Liquid effluent from the separators contains solid material removed from the gas and gaseous material which reacted with the liquid or was absorbed by the liquid. The invention is useful for collecting a sample of material in a gas, such as a vapor in the atmosphere, and in cleaning a gas. A relatively concentrated solution of a material present in a gas in a very small concentration can be obtained.

Abstract: An apparatus for gas purification is provided by means of charge build-up in an ionization means and subsequent electrostatic separation of ionized dirt particles in a separation means, which comprises collection surfaces arranged along lanes which are passed by the gas flow. These lanes are formed between fixed voltage-carrying plates and rotatable, grounded discs. The plates and the discs have substantially the same spacing to one another where a substantially stationary cleaning means strips off the deposited dirt particles on the discs. The arrangement provides an operation essentially independent of the contaminant or pollutant, high efficiency and uncomplicated production.

Abstract: A glue coating apparatus is provided having a plurality of individual slit nozzles. Two faces are formed by an end face of a nozzle plate, in which feed channels open out, and by a clamping strip extending in front of the nozzle plate, these clamping a slit plate between them. The feed channels open into the regions of the slit plate which remain free between webs, so that the glue is channeled through the back of the slit plate. The webs and the individual glue streams are combined only immediately in front of an outflow point, to assure a uniform covering of the coating width, but prevent an overflow of glue from one slit nozzle into an adjacent one. The webs may also be tapered towards the outflow point, so that the individual glue streams can easily merge into one another.

Abstract: An exhaust gas purifier unit has a bridged stream corona generator, an oil feeder for feeding oil to the bridged stream corona generator and an oil supplier for supplying an engine with oil stored in and flowing out of the bridged stream corona generator, so as to remove harmful gases contained in the exhaust gas, reliably over an extended period of time.

Abstract: A high-pressure hot separator for the separation of an overhead product from a process of high-pressure hydrogenation of coals, tars, crude oils, whose distillation and extraction products or similar carbon-containing feedstock such as heavy oils, low-temperature carbonization oils, extracts of heavy oil sands and the like, is downstream from the bottom phase reactors of the high-pressure hydrogenation. The separator is constructed from a vertically erected cylindrical pressure jacket having an upper cover, a lower cover, an inside adjacent thermal insulation member and a cylindrical wall insert. The overhead product is separated into a gas/vapor phase and a bottom product. A cyclone separator is installed in the gas/vapor space of the hot separator for improvement of the separation function.

Abstract: An improved wet wall electrostatic precipitation unit of the type wherein a constant liquid stream is maintained over the inside surface of a glass collector tube and a discharge electrode, to which a voltage is applied, extends substantially through the center of the tube between the upper and lower ends thereof, to repel smoke particles, forcing them into the liquid stream. The liquid from the liquid stream, discharged at the bottom of the glass tube is recycled to the top of the collector tube after adjustment of the pH to render the liquid caustic. The caustic nature of the recycle liquid prevents smoke from streaking the collector tube thereby improving efficiency.

Abstract: A filter element for removal of particulate matter from a flow of gas has a plurality of elongate fluid flow passages each defined by porous gas filtration material and arranged as an integral assembly in which the passage lie side-by-side to extend parallel with one another between end regions of the filter element, at least one end of each elongate passage being sealed to prevent free flow of gas to or from the passages, the elongate passages being defined by self-supporting walls of porous gas filtration material and the filter element being substantially rigid or semi-rigid so as to attenuate transverse vibration by no more than 70% between an end of the filter element and a position mid-way between its ends.

Abstract: A cordierite ceramic filter structure of the type having a plurality of clean gas channels forming outlets at the one end thereof, a plurality inlet channels forming inlets on said side surfaces for gas to be filtered, and thin porous sections separating said inlet channels from the outlet channels for removing particulate from the gas to be filtered, wherein the filter structure includes a plurality of stacked filter elements with each of the elements comprising a pair of marginal serrated side portions and a plurality of ribs intermediate the marginal side portions with thin porous sections joining and extending therebetween wherein the marginal sections have a substantially uniform width of greater than about 1 inch which are interrupted by a vertically extending notch adjacent for mounting said filter structure to a housing.

Abstract: In known separators, some of the solids trapped in the trapping chutes may be prevented from being discharged at the wall due to by-pass currents at the lower end of the trapping chutes. To improve the discharge of the separated dust, the lower end of each trapping chute that is adjacent to the wall is provided with an outlet channel piece extending to the wall and having a slot-like outlet opening resting at the wall and opening downward; and sheet metal deflectors are arranged between the outlet channel pieces of each layer of trapping chutes at a distance from each other and from the wall, which form between them delimit slots for the passage of gas. The separator is preferably used to separate solids from the ascending flue gas in a fluidized bed furnace.

Abstract: An apparatus for preventing discharge of fuel vapor to the atmosphere by allowing fuel vapor in a fuel tank to be adsorbed by an adsorbing device when a fuel lid is opened. A switch is turned on by the movement of a locking member for locking and unlocking the fuel lid so as to detect the opening of the fuel lid. The arrangement facilitates adjustment of the relative positions of the switch and the locking member. In addition, the switch is turned on when the fuel lid is opened by remote control, while the switch is turned off when the fuel lid is manually closed. The discharge of fuel vapor to the atmosphere during refueling and the influx of fuel vapor into the adsorbing device after the charging of fuel are prevented.

Abstract: A refrigerant purification and recovery apparatus for removing refrigerant from a refrigeration unit and for purifying the refrigerant removed from the refrigeration unit includes a compressor, condenser, a receiver-separator vessel having upper and lower end portions, pressure detection means for generating signals indicative of a pressure in the upper end portion of the receiver-separator vessel, liquid detection means for generating a signal indicative of the presence or absence of liquid in the vessel at a position between the upper and lower end portions, means for venting gas from the upper end portion of the receiver-separator vessel, means for draining liquid from the lower end portion of the receiver-separator vessel, and control-signal means for receiving the pressure indicative and liquid-presence indicative signals and generating a drain signal only when the pressure indicative signal is indicative of a pressure greater than a predetermined pressure and the liquid presence indicative signal is ind

Abstract: Method and apparatuses are disclosed for removing fine-grained particles from a gaseous sample stream from fluidized catalytic cracking regeneration unit. In one method, the fine-grained particles are wetted with condensate in a sampling system, then the wetted fine-grained particles are separated from the gaseous stream in a wetted packed column in the sampling system. The separated gaseous sample stream is cooled to remove condensible gases then is reheated. The separated fine-grained particles are kept wetted in the sampling system to prevent fouling of the sampling system, then stream is used as a motive force to return the wetted fine-grained particles to the fluidized catalytic cracking regeneration unit. The stream also is used as a drying agent to at least partially dry the wetted fine-grained particles outside of the sampling system and as a dilution agent to help prevent corrosion.

Abstract: An apparatus for precipitating particles, debris and the like from a gaseous stream, comprises an enclosed vessel partly filled with a liquid to a level and having a bottom wall; a passageway operably associated with the vessel for admitting the gaseous stream laden with particles into the vessel; an outlet operably associated with the vessel disposed above the liquid level for exhausting the gaseous stream; an atomizer disposed below the liquid level and operably associated with an end portion of the passageway for breaking up the gaseous stream into a multitude of bubbles. The atomizer includes a top wall and a depending side wall and a plurality of openings disposed in one of the walls adapted to break up the gaseous stream into the multitude of bubbles, thereby to promote substantial surface area contact between the particles and the liquid and cause precipitation of the particles from the gaseous stream onto the bottom wall of the vessel.