2270 results about "Gas release" patented technology

This invention provides a showerhead and method for allowing reaction gases to immediately mix upon release from gas outlets and minimize deposits of unwanted contaminants on the tip of a gas outlet and faceplate of the showerhead. A post having a central opening extends into the faceplate for emitting a first gas and is directly and circumferentially surrounded by an annular opening for emitting a second gas. The post may be recessed from, flush with or extend a distance past a frontal surface of the faceplate. A plurality of apertures, for emitting the second gas, may circumferentially surround the annular opening. The annular opening releases the second gas at a pressure and velocity sufficient to intermix with first gas released from the post while simultaneously forcing any unreacted gas and gaseous mixtures away from the tip of the post and frontal surface of the faceplate, thereby avoiding depositing contaminants thereon.

The integrated electromechanical microstructure comprises a base substrate and a cavity closed by a protective cover. Means for adjusting the pressure in the cavity after the protective cover has been sealed comprise at least one element made of pyrotechnic material combustion whereof releases gas into the cavity. The pressure in the cavity can thus be adjusted independently from the sealing process. Selective ignition of the elements made of pyrotechnic material can be achieved by heating electrical resistors or by laser beams coming from outside the microstructure and directed selectively towards the elements made of pyrotechnic material through a transparent zone of the protective cover.

This disclosure describes systems and methods for purging narrow diameter sensor tubing, occasionally referred to as “sensor lines”, in a ventilation system. The disclosure describes a novel approach in which a series of short, periodic releases of pressurized gas through the sensor tubes are used to clear any blockages due to condensation or patient secretions.

A device for releasing gas into molten metal includes a base having a discharge. The discharge has a first section including a first cross-sectional area and a second section including a second cross-sectional area, wherein the first section is upstream of the second section and the first cross-sectional area is smaller than the second cross-sectional area. A gas-release opening is positioned so that it can release gas into one or more of the first section or the second section. As the molten metal moves from the first cross-sectional area to the second cross-sectional area gas is released into the molten metal and the molten metal flow helps to draw the gas into the flow, thereby lowering the pressure required to release gas into the molten metal. Metal-transfer conduits other than a discharge incorporated in a pump base are also disclosed, as are pumps including either a discharge or other metal-transfer conduit according to the invention.

A system for adding gas to and transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, a device or structure, such as a molten metal pump, for generating a stream of molten metal, and one or more gas-release devices.

An automated closed loop flowback and separation system that allows automated control and remote operation of a flowback operation from a safe distance without any fluid or gas release to the atmosphere. Four-phase separation tanks allow the transport gas, well bore cuttings, produced oil, and produced water to be automatically separated and transported through process piping for reuse or sale, eliminating the need for auxiliary equipment. Flow measurement instruments, pressure transmitters, and level transmitters work in conjunction with an automated blast choke to send data to a programmable logic controller for use in calculating the erosion status of the choke restriction and adjusting the choke to compensate. The programmable logic controller works with a touch-screen or similar human-machine interface to allow remote monitoring and control or automated control of the system. The automated blast choke can vary the choke restriction opening based on the pressure differential and flow rate conditions.

An apparatus for producing algae circulates algae fluid through flexible reactor tubing that is at least partially translucent to sunlight. The reactor tubing lies flat when not pressurized. Preferably, the reactor tubing is made of clear polyethylene with UV inhibitors, the polyethylene being between 6 and 15 mil thick. The reactor tubing preferably has a substantially circular cross-section with a 6 inch diameter and is preferably 1250 feet long. Gas relief valves allow gases generated during algae production to escape from the reactor tubing. CO₂ may be injected into the algae fluid to stimulate photosynthesis. A circulation pump propels the algae fluid through the reactor tubing, keeping the reactor tubing pressurized and stationary without touching the reactor tubing, so that a rigid support structure is not needed. One or more layers of plastic mulch may be disposed above or below the reactor tubing to control temperature and sunlight exposure.

A dissolved gas flotation apparatus and process for removing oils and other contaminants from produced water generated in the production of crude petroleum and natural gas. The invention is particularly designed for offshore applications, where space is limited and natural gas is readily available. The invention includes a vessel for receiving and maintaining a liquid level therein and a circulating pump for introducing tiny flotation gas bubbles into the vessel. Natural gas is used as a blanket gas for the vessel and as a source of gas fed into the pump, wherein the gas is mixed with the pumped liquid. The liquid/gas mixture is transferred into the vessel, wherein the gas releases from the liquid, thereby forming tiny, finely dispersed gas bubbles. The tiny gas bubbles rise vertically through the vessel and attach themselves to the oil and other contaminants suspended in the liquid and buoyantly transport the oil and other contaminants to the top of the vessel, where the gas is released and either recycled back to the recirculating pump or transferred out of the vessel for further processing, and the oil and other contaminants are collected in a reservoir for recovery. The clarified water is removed from the vessel through a liquid outlet line located near the bottom of the vessel.

A tank contains both Zeolite and a hydrate in a gas chamber formed beneath a piston in the sample tank. Out of safety considerations, we avoid using source cylinders of nitrogen whose pressures exceed 4000 psi. Thus, the gas chamber of the sample tank is initially pressurized by the source cylinder to no more than 4000 psi of nitrogen at room temperature at the surface. Nitrogen gas is sorbed onto the zeolite at room temperature. As the tank is heated by being lowered downhole, nitrogen desorbs from the zeolite and the gas pressure increases. However, once this tank reaches a temperature high enough to release the hydrate's water of hydration, the released water is preferentially sorbed by zeolite, displacing sorbed nitrogen, and causing the pressure in the gas volume to increase even further. Because well temperatures are not high enough to desorb water from zeolite, any water sorbed onto a Zeolite sorption site will permanently block released nitrogen from resorbing at that site. The process of lowering the tank downhole provides the necessary heating to make the entire process occur. Thus, if returned to the surface at room temperature with the original gas-chamber volume, the tank's pressure would not fall back to the original pressure (e.g., 4000 psi) but would be at a substantially higher pressure (e.g., 6000 psi or more depending on the amount of Zeolite used and gaseous nitrogen gas released).

A vehicle seat and integrated side impact protection system includes a seat bottom, a seat back movably attached to the seat bottom, and a fold-flat mechanism within a lower portion of the seat back for permitting movement of the seat back between a seating configuration and a fold-flat configuration. An airbag module is located within an upper portion of the seat back adjacent the outboard side thereof and includes a side airbag and an inflator supplying inflation gasses. A lap belt extends between inboard and outboard sides of the seat and has an inflatable portion adjacent the outboard side of the seat. A gas conduit extends between the airbag module and the lap belt for conducting gasses released by the inflator to the inflatable portion of the lap belt. The gas conduit has a flexible portion permitting folding movement of the seat back.

A novel gastroretentive delivery system comprising a tablet comprising a pharmaceutical ingredient or diagnostic, which tablet comprises a gas releasing ingredient or a tandem of two gas releasing ingredients, an ingredient capable of unrestricted swelling in gastric fluid, an ingredient capable of limiting the unrestricted swelling and a hardening ingredient. The said system is based on the use of three different gastroretentive mechanisms: flotation, swelling and mechanical strength, the three mechanisms acting in a complimentary way. Processes for manufacturing same and methods of treatment are also disclosed.

A multi-use sanitization system is disclosed which includes one or more containers in fluid communication with other system components. Components of the system include an ozone contacting device, such as a vortex-venturi or a sparger, for incorporating ozone into a liquid, an ozone generator to provide ozone to the vortex-venturi, a fluid transfer valve to allow simultaneous flow of liquid into and out of the container, and a pump to promote fluid flow through the system. Optionally, a gas-liquid separator with an optional integral gas release valve, an ozone destructor, an oxidation-reduction potential ozone sensor, or a pour-through type pre-filter may be incorporated into the system.

The invention discloses a buffer type soil gas sampling device, belonging to the technical field of soil experimental facilities. The device consists of an injector, a valve, a gas-exhausting hole, a gas-exhausting conduit, a box body, gasbags, a water seal tank and a base. As the gasbags are additionally arranged on the box body, gas pressure inside/outside the box body during a whole storing and sampling process is always maintained in a balance state after the buffer adjustment of the gasbags, the box body is prevented from outward or inward gas leakage, and the quality of gas stored in the box body is maintained; meanwhile, the difficulty that natural release of soil gas is subjected to inhibition is also overcome, the reliability of measured data for gas released by soil is enhanced.The device has the advantages of reasonable design, simplicity for operating and low cost, and can be widely applied to gathering work for greenhouse gas emission in farmland, nudation, grassland andthe like.

Disclosed is a gas-release packet, comprising a flexible gas-permeable material enclosing or comprising one or more liquid-filled frangible sub-packets and a gas-producing chemical composition that is activated when in contact with said liquid.