Abstract:
A gas supply system including a gas cabinet defining an enclosure including therein a gas dispensing manifold and one or more adsorbent-based gas storage and dispensing vessels mounted in the enclosure and joined in gas flow communication with the gas dispensing manifold. The enclosure may be maintained under low or negative pressure conditions for enhanced safety in the event of leakage of gas from the gas storage and dispensing vessel(s) in the enclosure. The gas supply system may be coupled to a gas-consuming unit in a semiconductor manufacturing facility, e.g., an ion implanter, an etch chamber, or a chemical vapor deposition reactor.
Abstract:
Devices and methods for storing hydrogen fuels or other gaseous fuels. One embodiment of a container for storing gaseous fuels in accordance with an aspect of the invention comprises a high-pressure vessel configured to contain the gas in a high-pressure zone at a pressure significantly above atmospheric pressure. The container can also include a storing medium in the vessel and an inlet/outlet line extending through the vessel. The storing medium can have a plurality of storage spaces configured to physically bind molecules of the gas to the storing medium, and the inlet/outlet line can be a tube extending through the vessel in fluid communication with the storing medium. In operation, the high-pressure vessel is pressurized with a gaseous fuel (e.g., hydrogen) to a pressure significantly above atmospheric pressure (e.g., approximately 3,000-10,000 psi). The molecules of the gaseous fuel bind to the storing medium, and the pressure in the vessel drives additional molecules of the gaseous fuel into vacant spaces within the storing medium or in other regions of the vessel.
Abstract:
A gas supply system including a gas cabinet defining an enclosure including therein a gas dispensing manifold and one or more adsorbent-based gas storage and dispensing vessels mounted in the enclosure and joined in gas flow communication with the gas dispensing manifold. The enclosure may be maintained under low or negative pressure conditions for enhanced safety in the event of leakage of gas from the gas storage and dispensing vessel(s) in the enclosure. The gas supply system may be coupled to a gas-consuming unit in a semiconductor manufacturing facility, e.g., an ion implanter, an etch chamber, or a chemical vapor deposition reactor.
Abstract:
An adsorption-desorption apparatus, for storage and dispensing of a sorbable gas, wherein a physical sorbent medium bearing the adsorbed gas to be selectively dispensed is delivered by pressure differential desorption and/or thermal desorption of the sorbate gas from the sorbent material. The sorbent material preferably comprises a material which is characterized by a Sorbent Working Capacity, measured for arsine at 40 Torr and at 650 Torr, of at least 50 grams arsine per liter of bed of the sorbent material.
Abstract:
A double-walled container having spaced-apart inner and outer wall members enclosing a sealed insulation space, with at least a portion of the wall members being formed of a polymeric thermoplastic material selected from the group consisting of polyethylene, polypropylene, polytetrafluoroethylene and polychlortrifluoroethylene, uncoated with any permeation barrier coatings, so as to be gas permeable. A mass of pelletized adsorbent is disposed in the insulation space in thermal contact with the inner wall member. The introduction of cryogenic liquid to the container effects cooling of the inner wall member and adsorbent in thermal contact therewith, thereby causing increased adsorption of gas in the insulation space by the adsorbent for reduction of pressure therein and enhancement of the insulation quality of the insulation space. Complete removal of cryogenic liquid from the container effects warming of the inner wall member and adsorbent, thereby causing desorption of gas from the adsorbent disposed in the insulation space to raise pressure therein and cause pressure in the insulation space above pressure of the exterior environment of the container to be at least partially relieved by flow of gas through the polymeric thermoplastic wall member portion from the insulation space to the exterior environment.
Abstract:
A pressurized-gas vessel, especially for acetylene and gases soluble in a solvent, which comprises a pressure-retentive metal container, a body of porous material within the container and spaced from a wall thereof to form an intervening space, and a mass of sintered material filling this space and constituting a flame barrier and shock-wave attenuator to prevent explosion of the gas within the vessel while mechanically retaining the mass of porous material against breakdown during handling and transportation of the vessel.
Abstract:
Liquified natural gas, ethane or propane is stored in a cavity in which the roof is supported on broken rock placed in the lake. Very cheap broken rock containing a large volume of voids,when piled,is provided by building the cavity on a rock formation, breaking the rock formation into small pieces by rippers or giant teeth pulled by giant tractors, sieving the broken rock into fractions with each fraction having rock pieces with a minimum to maximum size ratio of 0.5, and piling the rock fractions without substantial mixing in the cavity. This allows storage cavities to be built at a fraction of the former cost and that also can not be damaged by sabotage and riots like former storage can be.
Abstract:
An adsorbence-based gas storage system includes a pressure vessel containing a granular gas adsorbent material, for example, an activated carbon or a metal-organic framework. The system may be configured to store natural gas or methanol. The pressure vessel includes a pressure release device, and an inlet/outlet valve for passage of gas into and out of the pressure vessel. A microwave or RF generator is configured to selectively heat the adsorbent material. In one embodiment the generator is connected to the pressure vessel through one or more waveguides, and at one or more locations along the pressure vessel. A sensor, for example, a temperature sensor, monitors the temperature in the pressure vessel. A computing device uses the sensor data to control the generator to selectively heat the adsorbent material.
Abstract:
Die Erfindung betrifft ein Betriebsgassystem (la, lb) für ein Unterwasserfahrzeug, insbesondere für ein U-Boot oder ein unbemanntes Unterwasserfahrzeug, umfassend eine Brennstoffzellenanlage (3) und einen mit der Brennstoffzellenanlage (3) strömungstechnisch verbundenen Betriebsgasbehälter (5). Im Hinblick auf eine einfache und effiziente Speicherung von Boil-Off-Gasen (BO) ist zudem eine Gasaufnahmevorrichtung (7) vorgesehen, die mit dem Betriebsgasbehälter verbunden ist. Die Gasaufnahmevorrichtung (7) enthält ein Sorbtionsmittel (9, 19) zur Aufnahme von Boil-Off-Gas (BO) aus dem Betriebsgasbehälter (5). Somit wird das Boil-Off-Gas (BO), welches im Betriebsbehälter (5) mit dem Betriebsgas (BG) für die Brennstoffzellenanlage entsteht, und welches nicht unmittelbar in der Brennstoffzellenreaktion verbraucht werden kann, aufgesammelt und mit Hilfe des Sorptionsmittels (9, 19) in der Gasaufnahmevorrichtung (7) gespeichert.
Abstract:
Die Erfindung hat ein Verfahren zum Befüllen eines Behältnisses mit Gas, wobei Gas in das Behältnis unter Kompression eingebracht wird, zum Gegenstand. Um das Behältnis mit einer größeren Menge Gas als bislang befüllen zu können und Gasdruckspritzen beim Befüllen abzubauen, ist gemäß der Erfindung vorgeschlagen, dass vor dem Befüllen mit Gas in das Behältnis elektrisch leitendes Streckmaterial eingebracht wird. Weiters betrifft die Erfindung ein Gasbehältnis (1), insbesondere eine Hochdruckgasflasche, zur Bevorratung von Gasen unter Drücken von mehr als 50 bar, insbesondere mehr als 200 bar, welches elektrisch leitendes Streckmaterial (11) beinhaltet. Bei Gasbehältnissen (1) gemäß der Erfindung wird bei gegebenen Druck ein höherer Füllgrad erreicht als bislang. Aufgrund eines Abbaus von Gasdruckspitzen im Innenraum von Behältnissen sind Behältnisse mit geringer Wandstärke ohne Sicherheitsrisiko einsetzbar.