473results about "Variable capacity gas holders" patented technology

Processes are provided for the storage and release of hydrogen by means of a substantially reversible catalytic hydrogenation of extended pi-conjugated substrates which include large polycyclic aromatic hydrocarbons, polycyclic aromatic hydrocarbons with nitrogen heteroatoms, polycyclic aromatic hydrocarbons with oxygen heteroatoms, polycyclic aromatic hydrocarbons with alkyl, alkoxy, nitrile, ketone, ether or polyether substituents, pi-conjugated molecules comprising 5 membered rings, pi-conjugated molecules comprising six and five membered rings with nitrogen or oxygen hetero atoms, and extended pi-conjugated organic polymers. The hydrogen, contained in the at least partially hydrogenated form of the extended pi-conjugated system, can be facilely released for use by a catalytic dehydrogenation of the latter in the presence of a dehydrogenation catalyst which can be effected by lowering the hydrogen gas pressure, generally to pressures greater than 0.1 bar or raising the temperature to less than 250° C. or less, or by a combination of these two process parameters.

A gas-generating apparatus (10) includes a reaction chamber (18) containing a solid fuel component (24) and a liquid fuel component (22) that is introduced into the reaction chamber by a fluid path, such as a tube, nozzle, or valve. The flow of the liquid fuel to the solid fuel is self-regulated. Other embodiments of the gas-generating apparatus are also disclosed.

A bag made of an outer bag 3 and an inner bag 2. The inner bag, inside the outer bag, has an opening in the upper edge, and the inner and outer bags are sealed along the upper edges, on either side of the respective bags, to form sealed portions 8 and 9, and the inner bag and outer bag are further sealed together at two lateral side edges and lower edge to form sealed portions 11 and 12 and sealed portion 13, thus forming gas filling compartments 14 and 15. Cut-ins 18 and 19 are formed in the upper comers of the outer bag, and supplemental sealed portions 16 and 17 connected to the sealed portions 8 and 9 are formed. Air (gas) is blown into the gas filling compartments 14 and 15 through the cut-ins and then the overall bag mouth including the cut-ins is sealed.

A preferred embodiment of the present invention is a hydrogen gas storage and supply method, comprising (a) providing a dry, solid-state hydrogen fuel source comprising a solid metal hydride or chemical hydride and a reaction-controlling agent in a solid state, wherein the hydride and the reaction-controlling agent are mixed at a desired proportion; and (b) delivering a desired amount of a liquid reactant to contact and react with a desired amount of the solid-state fuel source to produce hydrogen gas continuously or intermittently on demand, responsive to the needs of a fuel cell.

A system and process for gas homogenization is disclosed. This has application in the areas of generation of gas and its conversion to electricity in downstream applications. The homogenization system minimizes variance in the gas characteristics (composition, flow, pressure, temperature), thereby rendering a steady stream of gas of consistent quality to the downstream machinery. This homogenization system can be adjusted to optimize the output gas stream for specific end-applications, or to optimize the output gas stream for different input feedstocks. This ensures that overall conversion efficiencies are maximized while keeping the process cost-effective. Such a uniform, steady output gas stream has a wide range of applications in the broad areas of generation of electricity (e.g. using internal combustion engines and combustion turbine engines), chemical synthesis (e.g. of compounds such as ethanol, methanol, hydrogen, methane, carbon monoxide, hydrocarbons), fuel-cell technologies and in polygeneration processes (processes that result in co-production of electricity and synthetic fuels).

A high pressure tank 10 comprises a metal liner 20 having a desired tank shape; and a composite material shell 30 formed on the periphery of the metal liner 20 . The metal liner 20 comprises a cylindrical barrel portion 21 , a mouthpiece 22 located at each of two end portions, and a cap portion 23 connecting barrel portion 21 with mouthpiece 22 . Extensible portions 211 of bellows configuration are formed along the entire length of the metal liner 20 in the axial (lengthwise) direction. The extensible portions 211 impart elastic action through opening and closing (deformation) of their basal portions 211 b, thereby preventing slippage from occurring between the metal barrel portion 21 and the composite material shell 30 when the high pressure tank 10 expands and contracts.

Reduced emissions of nitrogen oxides can be achieved if engines are fuelled with mixtures of gaseous fuels such as hydrogen and natural gas. Storing the gaseous fuels separately is desirable so that the fuel mixture ratio can be changed responsive to engine operating conditions. The present apparatus increases the storage density of gaseous fuels such as hydrogen by storing them in gaseous form at high pressures and at sub-ambient temperatures. A first thermally insulated space for holding a first gaseous fuel in a liquefied form is separated from a second thermally insulated space for holding a second gaseous fuel by a thermally conductive fluid barrier. The second gaseous fuel liquefies at a lower temperature than the first gaseous fuel such that the second gaseous fuel can be stored within the second thermally insulated space in a gaseous form at a sub-ambient temperature.

An apparatus is disclosed to generate hydrogen. A liquid permeable material with one or more cavities contains a solid anhydrous chemical hydride and an anhydrous activating agent. A housing that is heat and pressure resistant houses the liquid permeable material, and a liquid. One or more liquid sources inject the liquid into the housing such that the liquid contacts at least a portion of the liquid permeable material. A gas outlet port releases hydrogen gas produced by a reaction comprising the solid anhydrous chemical hydride, the anhydrous activating agent, and the liquid. A hydrogen output regulator controls the amount of hydrogen gas that the gas outlet port releases.

The apparatus includes a liquid permeable pouch that defines a cavity for maintaining an anhydrous hydride reactant, wherein the cavity comprises a cross-section such that a point within the cross-section is separated from a perimeter of the liquid permeable pouch by no more than double the permeation distance, and a cartridge configured to receive the liquid permeable pouch and a liquid reactant such that at least a portion of the liquid permeable pouch is submerged in the liquid reactant. The system includes a plurality of pouches formed from two rectangular sheets of liquid permeable material, and each pouch has a width selected such that each point within a cross-section is separated from the sheets by no more than double the permeation distance. The method includes joining the sheets, forming one or more seals to define a cavity, disposing anhydrous hydride within the cavity, and sealing the opening.

Method and apparatus for storing hydrogen. One embodiment of such a method comprises providing a storage apparatus having a substrate and a nanostructure mat on at least a portion of a side of the substrate. The nanostructure mat comprises a plurality of nanostructures having a surface ionization state which causes more than one layer of hydrogen to adsorb onto the nanostructures. The method can also include exposing the nanostructure mat to hydrogen such that more than one layer of hydrogen adsorbs onto the nanostructures.

The invention discloses a large-displacement oil-water separator for a gas holder. A main drainage system comprising a main drainage pipe and a liquid level detection component is arranged on the basis of the conventional oil-water separator. The separator can increase displacement, maintain an extremely small water level change of a bottom oil groove and realize the aim of controlling the oil level of the piston oil groove by using the oil-water separator, thus the separator is suitable for storing the gas with relatively high temperature, improves the heat value of the gas, saves the cooling water and ensures low use cost; and by increasing limited investment, the separator of the invention can greatly improve the drainage capability of the conventional oil-water separator, reduce the loss of the sealing oil and expand the application range of the thin-oil sealed type gas holder from the normal-temperature saturated gas to the gas holder of saturated gas with inlet temperature of about 70 DEG C and is connected in series with the gas pipeline.

The invention discloses a compressed air energy storing device with a constant-pressure air storage function. The compressed air energy storing device with the constant-pressure air storage function comprises an air compression unit A, an air expansion working unit B, a high-pressure air storing container C, a motor M, a generator G, a pumped storage power generation unit E, an external water source W, an air pipeline D1, a high-pressure liquid pipeline D2, a liquid pipeline D3, a valve F1, a valve F2 and a valve F3. The high-pressure air storing container C is provided with an upper port and a lower port. The upper port is connected with the air compression unit A and the air expansion working unit B through the air pipeline D1. The lower port is connected with the pumped storage power generation unit E through the high-pressure liquid pipeline D2. The pumped storage power generation unit E is connected with the external water source W through the liquid pipeline D3. The air compression unit A is connected with the motor M. The air expansion working unit B is connected with the generator G. It is guaranteed that the air storage pressure intensity is stable when a system operates through a pressure-stabilizing control strategy of the high-pressure air storing container C. By adoption of the compressed air energy storing device, it is guaranteed that main equipment of the energy storing system can always work under rated working conditions in the operating process.

A hydrogen gas station is disclosed comprising, a reformer configured to generate a hydrogen-rich reformed gas through reforming reaction of an organic compound, a gas supply port configured to communicate with a gas supply pipe to supply the reformed gas to a plurality of fuel cells, and a gas recovery port configured to communicate with a gas recovery pipe to receive an off gas containing hydrogen unconsumed from the fuel cells, the hydrogen gas station being configured to consume the off gas.

The invention discloses a large single-stage rubber diaphragm-sealed accumulator unit. The accumulator unit comprises a cabinet body, a piston and a seal diaphragm for sealing the cabinet body and the piston, wherein the cabinet body comprises an upright post, a side plate, a top cabinet plate and a bottom cabinet plate which form a cylindrical shell; the piston which can rise and fall freely is arranged in the cabinet body, the rubber seal diaphragm is arranged between the outer side of the piston and a side cabinet plate, the lower edge of the rubber seal diaphragm is connected with the lower part of the piston, and the upper edge is fixed to the inner wall of the side cabinet plate to form the single-stage sealed accumulator unit; and the side cabinet plate, the rubber seal diaphragm, the piston and the bottom cabinet plate form a sealed barrel, and the piston drives the rubber seal diaphragm to move up and down in the cabinet body to store and release coal gas. By using the accumulator unit, the compressor can run stably and reliably and can provide the coal gas for users in the more stable pressure.

A method for sealing-in a gas in a bag that has therein a gas filling compartment, including the steps of: placing a blow-out port of a nozzle, which is connected to a pressurized gas supply source, against a cut-in or a hole of the bag and holding the back surface side of the bag with a backing member; blowing a gas from the nozzle into the gas filling compartment of the bag through the cut-in or the hole; gripping and thus closing the gas flow path in sealed portions surrounding the periphery of the cut-in or the hole by a blocking gripper while the gas blow-in continues, thus cutting off the flow of the gas between the cut-in or the hole and the inside of the gas filling compartment; and then sealing the cut-in or the hole, thus allowing the gas to be sealed in the gas filling compartment.

The invention relates to a method for altering a wet seal gas holder into a rubber diaphragm seal waterless gasholder and the method is finished according to the following steps: (1) the diameter of the rubber diaphragm gasholder is adjusted so the basis of the original wet seal gas holder is fully utilized; (2) the wall panel and bottom plate of a water tank of the original wet seal gas holder are respectively used as the lower wall panel and the bottom plate of the rubber diaphragm seal gas holder; (3) the water tank platform of the original wet seal gasholder is used as the wind resisting ring beam of the rubber diaphragm seal gasholder; (4) the inclined ladder of the original wet seal gas holder is used as the external inclined ladder of the rubber diaphragm seal gasholder. The method has the advantages that: 1. plenty of project investments, manpower and working hours can be saved. 2. Structural strength and corrosion resistance are stronger.