Abstract:
Fuel storage and delivery systems for compressed natural gas are provided that are constructed from ultra-high strength, low alloy steels containing less than 2.5 wt % nickel and having a tensile strength greater than 900 MPa (130 ksi). A primary benefit is that systems of this invention have substantially lower weight than that of currently available steel-based systems. Consequently, the fuel efficiency of a CNG vehicle can be improved due to the lower weight of the system of this invention, or the driving range of the CNG vehicle can be improved by increased fuel storage for the same volume at an elevated pressure, or the load-carrying capacity of the CNG vehicle can be improved. Another primary benefit is that systems of this invention have a cost per unit strength substantially lower than that of currently available systems.
Abstract:
A mobile self-contained self-powered station having a plurality of vessels delivers a pressurized fluid to a receiving tank (e.g., a fuel tank of a hydrogen-powered vehicle) without using mechanical compression, external electric power, or other external utilities. The station includes first and second vessels, a conduit in fluid communication with the receiving tank and each of the first and second vessels, means for transferring at least a portion of a quantity of the pressurized fluid from the first vessel to the receiving tank, means for measuring continuously a pressure differential between the increasing pressure in the receiving tank and the decreasing pressure in the first vessel, means for discontinuing the transfer from the first vessel when a predetermined limit value is reached, and means for transferring at least a portion of a quantity of the pressurized fluid from the second vessel to the receiving tank.
Abstract:
A corrosion protection device (“CPD”) for inhibiting corrosion of an air compressor collection tank, and relieving the pressure in the tank when excessive condensate accumulates within the tank. A relief passage extends through the plug, and an anode seals the relief passage near the interior volume of the tank. The tank, plug and anode are all coupled in an electrically conductive relationship, and a galvanic circuit is formed when condensate collects near the bottom of the tank. The anode has a lower redox potential than steel, and is preferably made from magnesium. The anode loses electrons with less resistance than the steel tank, so the anode will be consumed through the oxidation process before the steel tank corrodes. Once the anode is consumed so that it no longer seals the relief passage, the condensate and air are discharged from the tank through the relief passage.
Abstract:
A portable hydrogen refueling stations which can dispense gaseous hydrogen from one or more internal high pressure tanks. The refueling station can be refilled with a lower pressure hydrogen gas feed and then compressed for storage within the refueling station.
Abstract:
A method of utilizing a divided pressure vessel in a processing system employing a carbon dioxide based solvent includes transferring a first carbon dioxide based treating solution from a first liquid chamber in a divided pressure vessel having a plurality of liquid chambers to a processing vessel, returning the first treating solution from the processing vessel to the divided pressure vessel, transferring a second carbon dioxide based treating solution having a composition different from the first treating solution from a second liquid chamber in the divided pressure vessel to a processing vessel, and returning the second treating solution from the processing vessel to the divided pressure vessel. A divided pressure vessel may allow multiple solvent baths each having a different chemical composition to be stored and/or processed in a single pressure vessel while maintaining the different chemical compositions of the multiple solvent baths. Thus, such divided pressure vessels may provide the improved operational efficiency of a carbon dioxide based system having multiple solvent baths while decreasing the capital costs that may be associated with such systems.
Abstract:
A mounting structure, for a plurality of high pressure gas vessels (11a, 11b), has a block-shaped vessel mounting member (1) with a high rigidity formed with accommodating portions (5a, 5b, 9a, 9b) for accommodating first neck portions (12a, 12b) formed at one sides of the plural high pressure gas vessels and vessel base-valves (13a, 13b) and formed with a gas flow passage (6) that opens at openings (7a, 7b) of right and left side walls of the vessel mounting member (1) to allow the accommodating portions to communicate with one another. The neck portions (12a, 12b) and the vessel base-valves (13a, 13b) at the one sides of the plural high pressure gas vessels are accommodated in the accommodating portions (5a, 5b, 9a, 9b) of the vessel mounting member 1, and the plural high pressure gas vessels are mounted in the vessel mounting member (1), enabling the gas flow passage 6, formed in the vessel mounting member (1), to serve as a high pressure conduit portion.
Abstract:
Apparatus for storing a combustible gas including a pressure storage vessel, a pressure relief valve communicating with the storage vessel for venting the gas from the vessel when the pressure therein is too high, and a catalytic reactor communicating with the pressure relief valve to catalytically combust the gas exiting the valve and thereby reduce the amount of such gas that enters the environment.
Abstract:
A unitary fuel system module comprising one or more fuel cylinders mounted to a frame as a module, preferably through neck-mounts, and having fueling lines for connecting the fuel cylinders to the vehicle. The frame is fitted with a latching mechanism that is readily actuated for alternately securing the frame to the fuel supply envelope in the vehicle or releasing the frame for removal of the fuel module as a unitary structure. Preferably, the frame is fitted with wheels or slides to enable sliding the module in and out of the envelope. In operation, as required return a vehicle to operation, a faulty module can be replaced with a replacement module, which is slid into the envelope where it is secured and the fueling lines are re-connected to the vehicle.
Abstract:
A container for holding a solid, liquid and/or gaseous phase product therein and for use within a transportable or stationary support structure. The container maximizes the compressed product volume contained therein and prevents liquid and/or contaminant entrainment during gaseous product delivery from liquid phase product. The system allows for product withdraw when the level is above the delivery valves using, at a minimum, two delivery legs linked by a compartment or housing that connects the delivery point and a container head space via a removable manway.
Abstract:
A high flow rate, transportable, ultra high purity gas vaporization and supply system is provided which includes a vessel suitable for carrying large quantities of a liquefied gas, valves to operate with liquid or gas phases, a loading/unloading unit disposed on the vessel for loading and unloading the liquefied gas to be supplied, and a heater containing heating elements permanently positioned on the vessel to supply energy into the liquefied gas. The heater causes the liquefied gas to be supplied through the loading/unloading unit as a gas. A heater controller is also provided which uses process variables feedback for regulating the heating elements to maintain and regulate gas output.