473results about "Variable capacity gas holders" patented technology

A gas-generating apparatus includes a reaction chamber having a first reactant, a reservoir having an optional second reactant, and a self-regulated flow control device. The self-regulated flow control device stops the flow of reactant from the reservoir to the reaction chamber when the pressure of the reaction chamber reaches a predetermined level. Methods of operating the gas-generated apparatus and the self-regulated flow control device, including the cycling of a shut-off valve of the gas-generated apparatus and the cycling of the self-regulated flow control device are also described.

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 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 maximised 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 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 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 211b, 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.

The invention discloses a reconstructing method for a round dry and thin oil sealed dry type gasholder. The reconstructing method is to reconstruct the round dry and thin oil sealed dry type gasholder into a rubber film sealed dry type gasholder, and comprises the steps of: 1, tearing down gasholder accessories inside the round dry and thin oil sealed dry type gasholder; 2, reconditioning the foundation into a structure suitable for the rubber film sealed dry type gasholder by regarding the diameter of the round dry and thin oil sealed dry type gasholder as the benchmark; 3, mounting a structural parts in the round dry and thin oil sealed dry type gasholder. The reconstructing method for the round dry and thin oil sealed dry type gasholder greatly saves engineering cost and engineering time, and compared with common gasholders of the same type, the reconstructed rubber film sealed dry type gasholder is higher in structural stability and intensity.

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.

An improved apparatus and method for preventing accidental disconnection of a valve fitting from a compressed gas cylinder (tank) is provided. A valve safety device preferably includes a valve stem having a first threaded section. The first threaded section is preferably configured to engage threads in an internal section of a compressed gas storage device during insertion and reside within an internal portion of the compressed gas storage device following insertion. A non-threaded section is preferably arranged proximal to the first threaded section. One or more vents are preferably provided on the non-threaded section to provide for a safe release of compressed gas from the compressed gas storage device before the first threaded section can be removed from the compressed gas storage device.

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.

A device for condensing volatile organic compounds (VOC) from a storage or transport tank (4) into oil from the same or another storage or transport tank (4) via a downcomer (6), where the upper part (8) of the downcomer (6), which upper part has a cross sectional area that is essentially unreduced, is connected to a gas pipe (14), the gas pipe (14) communicating with the upper part (16) of the storage or transport tank (4), and where the upper part (8) of the downcomer (6) is arranged at a sufficient height above the upper part (16) of the storage or transport tank (4) to cause an inflow of gas from the upper part (16) of the storage or transport tank (4) due to the underpressure created in the upper part (8) of the downcomer (6) when oil flows down through the downcomer (6).

The invention relates to a method for dismounting a tank top system of a thin oil sealing-type dry-type gas tank. The method comprises the following steps: installing a tank top support on an upper most section of post; dismounting connecting pieces of tank top trusses and posts; using tank top supporting posts to support the tank top system; and then falling the tank top system and a piston system down to the bottom of the gas tank by using a buoyancy lift method; then, supporting the tank top system by using a tank top central bearing bracket; and finally dismounting the tank top system byhoisting equipment. The method does not need heavy hoisting equipment, only needs less frocks and equipment to dismount superhigh long-span truss structure; and the method has the advantages of fast construction speed, convenient operation, high safety and reliability and low construction cost; the method can be widely used for dismounting the tank top system of thin oil sealing-type dry-type gastanks.

A regenerative fuel cell system is provided having at least one hydrogen storage container fluidly coupled to at least one hydrogen generator and at least one power generator. Each power generator further includes a fuel cell fluidly coupled to the hydrogen storage container, an electric energy storage device, and an unregulated dc bus electrically connected to said fuel cell and said electric storage device. The system further provides for a health monitoring system for determining the occurrence of critical events which may necessitate the disabling of the system.

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.

In a fuel tank for containing a hydrogen storing material and a product generated by dehydrogenation reaction of the hydrogen storing material, comprising, a fuel chamber for containing the hydrogen storing material, a waste chamber for containing the product, and a tank envelope for containing the fuel chamber and the waste chamber, the fuel tank further comprises a partition wall fluidly separating the fuel chamber and the waste chamber from each other and being movable to change a ratio in volume between the fuel chamber and the waste chamber, and each of the fuel chamber and the waste chamber has a valve to be hermetically closed.

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.

The invention discloses a boosting mechanism, in particular a boosting mechanism for a sealing device of a gas tank, belonging to the technical field of mechanical engineering. The boosting mechanism comprises a piston structure, a balance weight, a lever, two steel wires, a spring plate, a pressure lever, a rubber clamping device, a hanging mechanism, a cylinder body lateral plate, sealing oil, sealing rubber and canvas, wherein the joints of the steel wires and the steel wires are fixed by clamping the joints of the steel wires and the steel wires above the sealing oil by using steel wire clamps. The joints of the steel wires are moved to a position above a piston oil groove, on which the steel wire joints are easy to observe and maintain, and the steel wires are provided with a plurality of the steel wire clamps and can not completely fall below the piston oil groove after the steel wire clamps fall off, therefore, workers can maintain the steel wire above the piston oil groove. The invention thoroughly solves the problem that the production stop of the gas tank is caused by the falling-off of the steel wire clamps and can be extensively applied to sealing devices of thin oil sealing type gas tanks.

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.

An object of the invention is to provide a fuel reformer housing container and a fuel reforming apparatus, which are capable of maintaining a level of vacuum inside the fuel reformer housing container favorably and which have less power generation loss. A fuel reformer housing container (11) includes a base (1) having a concave portion for housing a fuel reformer (9) in which reformed gas containing hydrogen gas is generated from fuel, a discharge pipe (5b) for communicating inside of the concave portion with outside thereof to discharge the reformed gas from the fuel reformer, a supply pipe (5a) for communicating inside of the concave portion with outside thereof to supply the fuel to the fuel reformer (9), and a gas adsorbent (10) housed in the concave portion, for adsorbing gas in the concave portion.

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.

A pressure maintaining system for a hydrogen storage system includes a hydrogen supply feed that enables a hydrogen flow from the hydrogen storage system. A liquid phase hydrogen feed enables a liquid phase hydrogen flow to the hydrogen supply feed. A gas phase hydrogen feed enables a gas phase hydrogen flow to the hydrogen supply feed. A check valve enables fluid communication from the hydrogen supply feed to the liquid phase hydrogen feed when a pressure within the hydrogen supply feed is greater than a threshold pressure.