38results about How to "Increase gas velocity" patented technology

A Plasma torch (10) for microwave induced plasma spectrochemical analysis of a sample includes a nozzle (30) in an inlet (18) for the main plasma gas flow between outer tube (12) and intermediate tube (14) of the torch (10). The nozzle (30) increases the gas flow velocity in the sheathing gas layer for the plasma which is provided by the gas flow from the annular gap (22) between the tubes (12 and 14). The increased velocity of the gas in the sheathing gas layer “stiffens” that layer and thus better confines the microwave induced plasma (such better confinement not being necessary for an ICP torch). Thus the torch is of improved durability for a microwave induced plasma compared to an ICP torch. The sample injection (inner) tube (16) may have a reduced diameter outlet at its end (34) which is substantially level with the end (35) of intermediate tube (14) to improve injection of a sample into the microwave induced plasma. The inlet end (26) of the sample injection tube (16) may include a heater (36) to assist in preventing blockages in tube (16) near its outlet end.

The present invention relates to an apparatus for laser cladding of a curved surface comprising: (a) an elongated arm having first and second ends and defining a chamber through the arm from the first end to the second end; (b) a laser delivery source connected to a focusing lens mounted in a housing within an opening on the first end of the arm for delivering a laser beam through the chamber; (c) a delivery head mounted on the second end of the arm comprised of (i) an enclosure having an inlet for receiving the laser and an outlet for delivering the laser to the curved surface, (ii) a powder nozzle for delivering a cladding powder to an inner surface of the curved surface, and (iii) a reflective surface for reflecting the laser to exit through the outlet; (d) mounting means for rotating the curved surface for the cladding of the curved surface; and (e) indexing means for moving the arm substantially parallel to a longitudinal axis of the curved surface so as to clad the curved surface during the rotation of the curved surface. Typically, the curved surface is part of the inner surface of a tube used in industrial applications.

The invention relates to the production of light-amplifying optical material. Liquid reactant is atomized into droplets using a high velocity gas. The droplets are subsequently introduced into a flame. Reactants are oxidized in the flame and condensed by forming small particles. At least a fraction of said particles is collected and fused to form optical waveguide material, which is subsequently drawn to form an optical waveguide. According to the invention, the velocity of the atomizing gas stream is in the order of the velocity of sound. The high velocity enhances atomization and increases reaction rates in the flame. The residence times are reduced to such a degree that unwanted phase transformations in the produced particles are substantially minimized. Consequently, very homogeneous material is produced. Especially, in the production of erbium-doped silica, low percentage of clustered erbium ions is achieved.

A centrifugal compressor includes a rotor assembly with a shaft and a plurality of impellers, bearings located at ends of the shaft and configured to support the rotor assembly, a sealing mechanism disposed between the rotor assembly and the bearings, and a gas bearing disposed between the plurality of impellers for supporting the shaft and receiving a working gas from an impeller downstream from a location of the gas bearing.

A fine-particle classification apparatus includes an aerosol generation section which generates an aerosol containing fine particles in a medium background gas, a fine-particle classification section which classifies the fine particles contained in the aerosol in a sheath gas, and an introduction section, between the aerosol generation section and the fine-particle classification section, which introduces the aerosol generated in the aerosol generation section into the fine-particle classification section. The introduction section uses a carrier gas with an adequately high velocity to introduce the aerosol generated in the aerosol generation section to the classification section using a pressure difference.

High-power inductively coupled plasma technology is used for thermal cracking and vaporization of continuously fed carbonaceous materials into elemental carbon, for reaction with separate and continuously fed metal catalysts inside a gas-phase high-temperature reactor system operating at or slightly below atmospheric pressures. In one particularly preferred embodiment, in-flight growth of carbon nanomaterials is initiated, continued, and controlled at high flow rates, enabling continuous collection and product removal via gas / solid filtration and separation methods, and / or liquid spray filtration and solid collection methods suitable for producing industrial-scale production quantities. In another embodiment, the reaction chamber and / or filtration / separation media include non-catalytic or catalytic metals to simultaneously or separately induce on-substrate synthesis and growth of carbon nanomaterials. The on-substrate grown carbon nanomaterials are produced in secondary chambers that are selectively isolated for periodic removal of the product.

A plasma etching apparatus includes an evacuable processing chamber for performing a plasma etching process on a target object; a mounting table for mounting thereon the target object in the processing chamber; and a shower head facing the mounting table, for introducing a processing gas for generating a plasma to the processing chamber. Further, the apparatus includes a ring-shaped protrusion protruded from a bottom surface of the shower head toward the mounting table; and a plurality of gas introducing openings inclusively arranged in an area smaller than the target object in an inner central portion of the ring-shaped protrusion on the bottom surface of the shower head.

Reactive atom plasma processing (RAP) can be used to shape, polish, planarize, and clean surfaces of difficult materials with minimal subsurface damage. An improved RAP device utilizes a microwave-induced plasma (MIP) source instead of a conventional ICP torch to modify these surfaces. The use of MIP provides for a smaller footprint, finer detail, simpler and enhanced movement capabilities, lower heat load, fewer shielding requirements, and cheaper construction and operation than ICP. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

The present invention provides a process for producing aromatic hydrocarbons at a sufficiently high yield, from a light hydrocarbon containing mainly hydrocarbons having 7 or fewer carbon atoms. The process of the present invention comprises bringing a feedstock containing mainly light hydrocarbons having 2 to 7 carbon atoms into contact with a catalyst composition comprising at least a gallium-containing crystalline aluminosilicate wherein a reaction step for converting the feedstock to aromatic hydrocarbons comprises at least two or more reaction layers formed of the catalyst composition, arranged in series and heating means arranged either between or in the reaction layers, the amount of the catalyst in the first stage reaction layer is 30 percent by volume or less of the total catalyst volume, and / or the yield of the aromatics in the product outflowing from the first reaction layer is from 0.5 to 30 percent by mass.

The present invention relates to a hole-jetting type reactor and its applications, in particular to a process for the production of isocyanates by the phosgenation of aliphatic or aromatic diamines or triamines in the gas phase using this reactor. The present invention achieves a good mixing and reacting result of the gas-phase phosgenation reaction at a high temperature by improving the mixing of reactants in the reactor to reduce the possibility of forming swirls and eliminate negative pressure produced at a local jet area, which can finally reduce back-mixing and formation of solid by-products.

An electrochemical compressor incorporates an electrochemical cell having an anode and a cathode that reacts a working on the anode side into an ionic component and a reactant. The ionic component is transported through an ion conducting media to the cathode. At least a portion of the reactant passes through a reactant conduit that extends from the anode to the cathode. A transfer device, such as a pump or venturi valve configured along the reactant conduit allows the reactant to flow from the anode to the cathode. The reactant and the ionic component are reacted on the cathode to reform the working fluid. A reactant separator may be configured to selectively allow reactant into the reactant conduit. A reactant separator may be a perm-selective layer or a fluid that has high reactant solubility. The working fluid may be water with the ionic component protons and the reactant oxygen.

A centrifugal compressor having a casing that houses an impeller allowing rotation about a rotational axis C, a gas channel, a treatment hollow part provided inside the casing, a first channel open to the gas channel on the downstream side of the blade leading edge of the impeller, a second channel open to the gas channel at the upstream side of the blade leading edge, a guide vane that imparts a swirl component in an opposite rotational direction of the impeller to gas discharged from the second channel, a constricting part that constricts the gas channel, and a rectifying part that rectifies gas in a direction that minimizes the swirl component about the rotational axis C and also increases the component in the direction of the rotational axis C.

A method and apparatus to remove vapor from a storage tank comprising introducing a stream of gas into the storage tank to cause mixing of the vapor within the tank. The stream of gas is preferably introduced into the storage tank through a gas nozzle that increases the velocity of the gas. Furthermore, the gas nozzle may have a fixed or variable orientation that introduces the stream of gas to flow into a region of the storage tank to prevent retention of the vapor in that region. A mixture of the vapor and the gas is withdrawn from the storage tank through an outlet port and provided to an abatement unit, such as a condenser or burner. Where the abatement device is a condenser, the gas and any uncondensed vapor may be returned to the storage tank through the gas nozzle, or through a second gas nozzle.

The invention relates to the production of light-amplifying optical material. Liquid reactant (10) is atomized into droplets (15) using a high velocity gas (20) . The droplets (15) are subsequently introduced into a flame (100) . Reactants (10, 30) are oxidized in the flame (100) and condensed by forming small particles (50) . At least a fraction of said particles (50) is collected and fused to form optical waveguide material, which is subsequently drawn to form an optical waveguide (750) . According to the invention, the velocity of the atomizing gas (20) stream is in the range of 0.3 to 1.5 times the velocity of sound. The high velocity enhances atomization and increases reaction rates in the flame (100) . The residence times are reduced to such a degree that unwanted phase transformations in the produced particles (50) are substantially minimized. Consequently, very homogeneous material is produced. Especially, in the production of erbium-doped silica, low percentage of clustered erbium ions is achieved.

A gas meter for ultrasound measurements in a breathing apparatus has a gas conduit having an inner wall defining an inlet in a first end of the gas conduit and an outlet in a second end of the gas conduit, and an ultrasound transducer arrangement configured to measure the speed of sound in a gas flowing through a part of said gas conduit forming a measurement chamber. The gas meter has a self-draining design to prevent condensation water and other liquids from negatively affecting the ultrasound measurements. To this end, at least a lower surface of the inner wall of the gas conduit is inclined downwardly relative to the horizontal plane in the longitudinal direction of the gas conduit, at both sides of the measurement chamber causing condensation water to be pulled away from the measurement chamber by gravity.

A gas turbine combustor includes a liner and a transmission piece. Fuel injected in the liner from a fuel nozzle of a gas turbine mixes with compressed air. High temperature gas produced in the liner is transmitted through the transmission piece. The liner is disposed in a flow sleeve in which cooling holes are formed. The transition piece is disposed in a perforated sleeve. Compressed air supplied through holes formed in the perforated sleeve collides with the transition piece. The liner includes a cooling sleeve disposed thereon that divides the air supplied through the cooling holes of the flow sleeve and the compressed air flowing to a space portion between the liner and the flow sleeve.

An improved gas lift system for use in oil production from a well bore (11) utilising a gas lift injection (10) system of the known type and further including a surface jet pump (16) downstream of the well head (13) for reducing the flowing well head pressure and capable of discharging produced fluid (14) at a pressure required by a downstream production system.

A centrifugal compressor includes a rotor assembly with a shaft and a plurality of impellers, bearings located at ends of the shaft and configured to support the rotor assembly, a sealing mechanism disposed between the rotor assembly and the bearings, and a gas bearing disposed between the plurality of impellers for supporting the shaft and receiving a working gas from an impeller downstream from a location of the gas bearing.

The present invention discloses a spindle-shaped structured packing, which comprises at least a packing layer comprising a plurality of horizontally-placed spindle-shaped special-shaped pipes connected in parallel, wherein the plurality of the horizontally-placed spindle-shaped special-shaped pipes connected in parallel form a plurality of parallel channels with collection sections, laryngeal orifices and dispersion sections, the cross section of the spindle-shaped special-shaped pipe is the spindle shape, the top portion and the lower portion of the spindle-shaped special-shaped pipe are the arc shapes, and the radius of the arc on the top portion is larger than the radius of the arc on the lower portion. Compared with the existing structured packing, the spindle-shaped structured packing of the present invention has advantages of high mass transfer efficiency, simple structure, small size, fouling resistance and low pressure drop, has less gas-phase liquid foam entrainment after the mass transfer reaction, is suitable for the gas-liquid two-phase mass transfer and reaction processes, especially for the dust removal and desulfurization treatment of flue gas and process exhaust gas, and can be widely used in the fields of petrochemical industry, environmental protection and the like.

A method for transport of natural gas through a pipeline from a gas field to a terminal, where there is a risk of condensation of heavy hydrocarbon components in the pipeline during the transport, wherein dry gas is added to the natural gas to reduce the cricondentherm and the cricondentherm of the gas and thus prevent condensation in the pipeline, is described. A plant for carrying out the method is also described.

A large-scale turbocharged diesel engine comprises exhaust boilers (20 and 23) and a power turbine (31), wherein the exhaust boilers (23) are used for recovering energy in exhausted gas. One of the exhaust boilers is a part of an integral body of an exhaust receiver (3). Part of exhaust in upstream of a turbocharger turbine (6) is distributed to the power turbine. The large-scale turbocharged diesel engine comprises a preheating boiler (20) arranged on the low-pressure side of the turbocharger turbine and an overheating boiler (23) arranged on the high-pressure side of the turbocharger turbine. The large-scale turbocharged diesel engine can run in scavenge air mode highly humidified to increase recoverable energy in the exhaust. The large-scale turbocharged diesel engine can also be utilized as a heat pump to enable the temperature of exhaust leaving the engine to be lower than an environmental temperature.

A respiratory assist device (10) adapted for transport use. The device (10) including a venturi means (16), a means (36) to deliver gas to a patient's airways, and a Carbon Dioxide absorber (44) in a gas circuit (12) having at least a breathable gas mixture of fresh gas and Carbon Dioxide depleted gas travelling therethrough. The venturi means (16) is adapted to receive fresh gas from a fresh gas source (18) and entrain the fresh gas into the gas mixture in the circuit (12), thereby increasing the velocity of the gas mixture in the circuit (12). The delivery means (36) is downstream of the venturi means (16) and is also adapted to deliver the gas mixture from the circuit (12) to a patient's airways and return the patient's exhaled gas to the circuit (12). The Carbon Dioxide absorber (44) is downstream of the delivery means (36) and upstream of the venturi means (16). The absorber (44′) is adapted to remove Carbon Dioxide from the gas mixture in the circuit (12).

High-power inductively coupled plasma technology is used for thermal cracking and vaporization of continuously fed carbonaceous materials into elemental carbon, for reaction with separate and continuously fed metal catalysts inside a gas-phase high-temperature reactor system operating at or slightly below atmospheric pressures. In one particularly preferred embodiment, in-flight growth of carbon nanomaterials is initiated, continued, and controlled at high flow rates, enabling continuous collection and product removal via gas / solid filtration and separation methods, and / or liquid spray filtration and solid collection methods suitable for producing industrial-scale production quantities. In another embodiment, the reaction chamber and / or filtration / separation media include non-catalytic or catalytic metals to simultaneously or separately induce on-substrate synthesis and growth of carbon nanomaterials. The on-substrate grown carbon nanomaterials are produced in secondary chambers that are selectively isolated for periodic removal of the product.

The invention relates to the technical field of dispensing equipment for main boards of game handles, in particular to a saving-type dispersing device used in the production of a main board of a gamehandle. The saving-type dispersing device comprises a fixing frame, wherein an equipment shell is fixedly connected to the lower surface of the fixing frame, a driving shaft is inserted into the equipment shell, a first gear is engaged with the outer surface of the driving shaft, a glue outlet pipe is inserted into the lower end of the equipment shell, a crank connecting rod is movably connected to the front surface of the first gear through a shaft, and a pressing rod is movably connected to the lower end of the crank connecting rod through a shaft. The glue is sucked by suction, the residualglue on the inner part of the glue outlet pipe can be well prevented from dropping through the suction, thus the waste caused by excessive glue is avoided, according to the relationship between gas flow and pipe diameter, the pipe diameter at the lower end of an air pipe is decreased, thus the passing air speed is increased, the air flow rate is strengthened, and the flowing glue can be evenly dropped on the main board of the game handle.

A large-scale turbocharged diesel engine comprises exhaust boilers (23) and a power turbine (31), wherein the exhaust boilers (23) are used for recovering energy in exhausted gas. One of the exhaust boilers is a part of an integral body of an exhaust receiver (3). Part of exhaust in upstream of a turbocharger turbine (6) is distributed to the power turbine. The large-scale turbocharged diesel engine comprises a preheating boiler (20) arranged on the low-pressure side of the turbocharger turbine and an overheating boiler (23) arranged on the high-pressure side of the turbocharger turbine. The large-scale turbocharged diesel engine can run in scavenge air mode highly humidified to increase recoverable energy in the exhaust. The large-scale turbocharged diesel engine can also be utilized as a heat pump to enable the temperature of exhaust leaving the engine to be lower than an environmental temperature.