Abstract: A gas-solids reaction system is provided for improving product recovery in a multiple reactor reaction system. The solids of the product gas-solids flows from the multiple reactors are separated out in a separation vessel having a baffled transition zone. Additional product vapor is stripped from the solids as the solids pass through the baffled transition zone. The solids are then returned to the multiple reactors.

Abstract: An apparatus for the separation of sand from an air stream in a thermal sand removal oven is disclosed. The preferred embodiment of the apparatus comprises a plurality of members comprising two planar members joined to form “V” shaped members. The vertex of the “V” shape points generally in the direction of the air current. The apparatus is installed in the recirculated air stream of a thermal sand removal oven, in a location between the sand molds and the air circulation means. The present invention is also installed in ovens containing metal castings containing sand cores, and ovens containing metal castings both encased in a sand mold and containing a sand core.

Abstract: A vane-type mist eliminator is provided with pocket-like channels extending along the lengths fo the vanes. The pockets allow droplets entrained in a gas stream to impinge and cling to the vane, and then drain, without being re-entrained in the gas stream because they are protected from the gas stream by a portion of the pocket which defines the channel. The device does not increase the pressure drop when compared with a similar device lacking the pockets, and allows for a higher throughput before breakthrough occurs.

Abstract: For preparing a gas stream cleaned from dust and dirt particles, a device is proposed in which an outflow channel (2) for cleaned medium has at its mouth in an inflow channel (1) an extension element (4), which projects into the inflow channel. A cover element (6) covers an end inflow aperture (4a) of the extension element. In an embodiment of the invention, the extension element (4) has lateral inlet apertures (5). The cover element (6) is preferably constituted hood-shaped, and has axial extension elements (6a), which at least partially cover the extension element (4) in the axial direction, and advantageously extend over the lateral inlet apertures. The stream entering the outflow channel (2) for cleaned medium must overcome strong flow deflections, so that particles with a low flow following ability cannot get into this channel. Further outflow channels (3) for conducting the remaining dust-laden medium are arranged substantially flush with the wall (7) of the inflow channel.

Abstract: Device for extraction of greases in aerosol form from an air flow in a ventilation system, which device comprises a number of intermediate plates (16) which define both an increased surface of deposition for the greases, and an extended flow path in the ventilation system, which flow path exhibits an alternating direction of flow and an alternating cross sectional area. According to the invention, each intermediate plate (16) exhibits a turbulence inducing wing (26), along a free edge thereof which forms the highest situated point or line in each intermediate plate in the device, which wing (26) is directly followed in the flow path by an increased cross-sectional area for the air flow.

Abstract: A vane-type mist eliminator is provided with pocket-like channels extending along the lengths fo the vanes. The pockets allow droplets entrained in a gas stream to impinge and cling to the vane, and then drain, without being re-entrained in the gas stream because they are protected from the gas stream by a portion of the pocket which defines the channel. The device does not increase the pressure drop when compared with a similar device lacking the pockets, and allows for a higher throughput before breakthrough occurs.

Abstract: The present invention relates to a process and a device for eliminating particles from a stream of fluid, having a channel for turbulent flow of the fluid and a series of objects placed along the channel.

Abstract: The present invention is directed to the separation of dust and debris from flowing fluid. Conventional cyclone separators and centrifugal separators present a tradeoff between the extent of dust separation and the cross-sectional area of fluid flow. Thus, increased flow capacity cannot be achieved without reducing the amount of dust removal. In contrast, the present invention allows for the increase of cross-sectional flow area without jeopardizing dust removal. The apparatus is designed such that the cross-sectional area of fluid flow can be increased independently of the radii of curvature of the redirections. Therefore, dust is still effectively removed while the flow capacity of the system is increased. Also included herein are embodiments utilizing these concepts of dust separation vacuum cleaner embodiments.

Abstract: This invention provides an improved method and apparatus for collecting a liquid overspray from a gaseous mist and separating the liquid from the gas stream. The invention has utility in a wide variety of chemical application processes such as to reduce the hazards and waste characterized by prior art methods and provide a mechanism for the in-line recycling of the overspray liquid. In a preferred embodiment, the present invention comprises a hooded recovery unit which is oriented above and about a conveyor system in which a workpiece travels through a spray zone in which a chemical or other liquid is applied to the workpiece. In such a situation, the present invention provides for the recovery of overspray liquid which would otherwise be wasted as the liquid or chemical is applied to the workpiece during the period in which the workpiece passes through the recovery unit. The system includes a spray application chamber, a conditioning chamber, and an overspray collection chamber.

Abstract: A trap for condensable liquids, such as tantalum pentoxide, has a primary trapping chamber surrounding a secondary trapping chamber and a sump connected by a small enough opening to the primary or secondary chamber such that trapped liquid in the sump is effectively isolated from a gas flow through the primary and secondary chambers. Partitions and openings in the primary and secondary chambers enhance condensation while allowing condensed liquid flow that does not clog the primary and secondary chambers against the gas flow.

Abstract: An exhaust gas particulate controller is included between an exhaust of a barrel chemical vapor deposition reactor and the gas scrubber system. The exhaust gas particulate controller is positioned as close to the exhaust of the reactor as is practical. The exhaust gas particulate controller is a passive system that prevents generation of particulates associated with gas density changes that occur during processing within the reactor.

Abstract: A receptacle (14) open in its upper part into which opens a conduit (13), is inserted between a device (11) for fast extraction and the stripping zone (18). The receptacle (14) consists at its base of at least one diffuser (15) fed in fluidization gas and to which the solid particles are put in a dense fluidized bed state (17), whose density ranges between 300 and 800 kg.m−3, then escape by overflow from the receptacle (14) toward the stripping zone (18) located below.

Abstract: A trap for removing moisture from sampled gases includes an elongate conduit having a plug substantially positioned therein to prevent flow directly through the conduit. The conduit has a radially directed hole on each side of the plug. A tube is substantially concentric with the conduit and has end walls at opposite ends thereof adapted for the conduit to pass therethrough. At least one of the end walls has a second opening which can be stopped during sampling and unstopped for draining. During sampling, sample gases are drawn into one end of the conduit and the tube such that vapor condenses on an inner surface of the tube, entrained liquid collects on the inner surface and the gas enters the conduit on the other side of the plug and exhausts to an analyzer.

Abstract: A method of removing dust from dust laden gases said method including the sequential steps of: (1) passing a flow of gases laden with dust particles, at a selected first gas stream velocity through a first dust removing mechanism capable of creating multiple vortexes of gases; (2) agglomerating the dust particles of the gases as they pass through the first dust removing mechanism said first gas stream velocity being selected to cause agglomeration of said dust particles; (3) passing the gas stream carrying agglomerated particles at a selected second gas stream velocity through a second dust removing mechanism capable of creating multiple vortexes of gases; (4) removing the agglomerated dust particles as they pass through the second dust removing mechanism at said second gas stream velocity; wherein the second gas stream velocity is substantially slower than the first gas stream velocity.

Abstract: In a dust precipitation device for filtration of dust created during crystal growth from a melt, cold surfaces are provided as contact surfaces as a part of the gas control geometry, to which the dust can adhere and thus become separated from the transport gas pumped from the processing chamber. Due to cooling of the flow contact surfaces, for example, by a coolant that is supplied via coolant lines blockable by valves, the dust is filtered very effectively from the transport gas. The extraction device has several precipitation chambers located one behind the other for the passage and filtering of the dust from the transport gas. The individual precipitation chambers are connected to each other so that they can be individually removed from or inserted into the precipitation device, for example, manually.

Abstract: This invention describes a process for the purification of a refrigerant gas by feeding the refrigerant through at least one venturi cell. In one configuration, the venturi will have a first conical segment with an open base through which said refrigerant gas can enter, and a second conical segment which is connectedly affixed to the first conical segment in a leak-proof manner and in communication with the segment to permit refrigerant gas flow therethrough in addition to a configuration that creates a pressure differential between said first and said second conical segments. There can be more than one venturi cell depending upon the degree of purification required for the refrigerant gas.

Abstract: An air washer includes an upwardly-open vessel for holding an air washing liquid. An air inlet opening into the upwardly open vessel introduces air to be washed below the upper level of the air washing liquid, and a chamber above the upper level of air washing liquid has inner and outer walls. A fan spaced from the upper level of air washing liquid is positioned within the outer wall of the chamber. The fan pulls an air flow through the inner wall of the chamber and exhausts it to an exhaust path downstream of the fan. Operation of the fan induces air to pass through the inlet and to be washed by the air washing liquid in the vessel and to pass through the chamber to the fan and then to be exhausted through the exhaust path. Air washing liquid entrained as liquid droplets in the cleaned air is propelled outwardly by the fan and centrifugally removed from the cleaned air.

Abstract: The present invention relates to a process and a device for eliminating particles from a stream of fluid, having a channel for turbulent flow of the fluid and a series of objects placed along the channel.

Abstract: A trap for removing moisture from sampled gases containing moisture in vapor and/or entrained liquid form includes an elongate conduit having a plug substantially centrally positioned therein to prevent flow directly through the conduit, the conduit being provided with a radially directed hole on each side of the plug. A tube is substantially concentric with the conduit and has stoppers at opposite ends thereof with openings therein for the conduit to pass therethrough. At least one of the stoppers is provided with a second opening which can be stopped during sampling and unstopped for draining. During sampling, sample gases are drawn into one end of the conduit and exhausted radially into the space between the conduit and the tube such that vapor condenses on the inner surface of the tube, entrained liquid collects on the inner surface and the gas enters the conduit on the other side of the plug and exhausts to an analyzer.

Abstract: Apparatus and methods for separating fluids of differing specific gravities are discussed. More specifically, apparatus and methods for separating a high volume flow mixture of air and water into an essentially dry air component and a pure water component are discussed. The separator is high volume and is structured around three physical elements which are defined as an input, a water chamber and an air separator chamber. A composite flow enters the input where most of the heavier water component separates, under the force of gravity, and flows into the water chamber. The remaining fluid, which is air and water in the form of vapor, mist, or droplets, is drawn into the air separator chamber using a vacuum pump, and subsequently flows through a condensate sub chamber which physically is an element of the air separator chamber. Any moisture in this flow is condensed within, and drained from, the condensate chamber such that dry air is discharged from the air separator chamber.

Abstract: This invention describes a process for the purification of a refrigerant gas by feeding the refrigerant through at least one venturi cell. In one configuration, the venturi will have a first conical segment with an open base through which said refrigerant gas can enter, and a second conical segment which is connectedly affixed to the first conical segment in a leak-proof manner and in communication with the segment to permit refrigerant gas flow therethrough in addition to a configuration that creates a pressure differential between said first and said second conical segments. There can be more than one venturi cell depending upon the degree of purification required for the refrigerant gas.

Abstract: This invention consists of apparatus and methods for separating fluids of differing specific gravities, and more particularly apparatus and methods for separating a high volume flow of fluid comprising a mixture of air and water into an essentially dry air component and a pure water component. The separator is high volume and is structured around three physical elements which are defined as an input, a water chamber and an air separator chamber. A composite flow enters the input where most of and flows into the water chamber. The remaining fluid, which is air and water in the form of vapors mist, or droplets, is drawn into the air separator chamber using a vacuum pump, and subsequently flows through a condensate sub chamber which physically is an element of the air separator chamber. Any moisture in this flow is condensed within, and drained from, the condensate chamber such that dry air is discharged from the air separator chamber.

Abstract: An air mixer, with a water collector, is disclosed for supplying recirculated cabin air in aircraft. In the preferred embodiment: used cabin air flows over pipes of colder fresh air to cool the used air and condense out most of the moisture contained in it; the fresh air and used air are passed over opposite faces of a ring of stator vanes, thereby imparting swirls to both types of airstreams; and the streams meet at the trailing tips of the stator vanes, where they corkscrew together to throw remaining coalesced moisture against a collection trough, from where it is discharged. The airstreams can now be injected into the cabin without droplets raining down on the passengers, nor ice clogging any pipes for the fresh air, which is typically supplied at below-freezing temperature.

Abstract: A filter for filtering particulates from a particulate-containing fluid stream passing through the filter, contains one or more flow plates, each of the flow plates having (a) one or more primary fluid flow passages; and (b) one or more particulates-collecting, eddy current-forming accumulation chambers communicating with the primary fluid flow passages; wherein the accumulation chambers are not situated in the primary fluid flow passages and, when the accumulation chambers contain particulates, the particulate-containing accumulation chambers do not impede fluid flow through the primary fluid flow passages.

Abstract: This invention relates to an inertial filter which utilizes differential fluid velocity of a fluid flowing through fluid passageways to remove particulate matter entrained in the fluid. The filter has a plurality of baffle plates located within a housing. Each baffle plate has a medial deflector plate from which extends a pair of lateral deflector plates. The plates have flanges and adjacent plates are cooperable in use to form a fluid passageway through the filter. The orientation and configuration of the flanges and plates form at least two areas where fluid flowing between the plates is alternately speeded up and slowed down. As the fluid flows centrifugal force flings particulate matter entrained in this fluid outwardly where it collects on the plates, flows operatively downwardly along the plates, is collected in a channel towards the operative bottom of the filter and is removed.

Abstract: A vent system which provides constant venting of air through a vent opening in a casing while preventing water from reaching the vent opening and entering the casing, even water from a high-speed jet of water. The vent system is mounted in the vent opening and provides a tortuous path for air between the vent opening and ambient. A central tube contains openings communicating with the interior of a surrounding baffle tube, about half-way along the length of the inner tube, and the baffle tube permits air to pass around its ends between its interior and a surrounding central chamber. End chambers are provided at each end of the central chamber, each communicating with the central chamber. The end chambers have slots in their edges which communicate with ambient, and through which a high-speed jet of water may enter. The water, for the most part, enters one slot, traverses the end chamber, and exits through one or both of the other slots.

Abstract: A solvent fume exhaust scrubber (100) for recovering organic vapor from exhaust air which is produced during the manufacture of semiconductors includes a throttling chamber (180) containing a plurality of planar baffles (112, 114, 116, 118 and 120), a planar condenser (130) and a cooling coil (138) which engages and substantially traverses the planar surface of the condenser. The throttling chamber intersects an exhaust duct (152) so that an exhaust stream (182) flows in a flow direction (184) through the chamber. Each baffle and condenser has a planar surface which is disposed at right angles to the flow direction. The surface extends partially across the exhaust stream. The baffles are arranged sequentially along the flow direction and have offsetting planar surfaces across the exhaust stream so that the baffles in combination extend across the exhaust stream. A baffle includes a baffle frame (302) for holding a plurality of carbon beads (306).

Abstract: Embodiments of this invention include devices for removing particles, such as the fly ash from gaseous effluent produced by the combustion of pulverized coal, comprising arrays of ceramic rods that are contained within a housing having ingress and egress openings for the effluent. The rods are so oriented as to create tortuous paths for the effluent and thereby effectively render the rods in the aggregate into an impact separator. The rods are made from material which exhibits electrical resistance such that when the are sufficiently energized electrically, ash accumulated thereon liquefies or otherwise looses its adhesive strength, releasing such accumulations which then, by gravity and/or the drag forces of the gas stream separate from the rods for subsequent collection and removal.