摘要:
Natural gas liquefaction system employing an open methane cycle wherein the liquefied natural gas is flashed immediately upstream of the liquefied natural gas storage tank and boil off vapors from the tank are returned to the open methane cycle.
摘要:
Natural gas liquefaction system employing an open methane cycle wherein the liquefied natural gas is flashed immediately upstream of the liquefied natural gas storage tank and boil off vapors from the tank are returned to the open methane cycle.
摘要:
Natural gas liquefaction system having an optimum configuration of mechanical drivers and compressors. A heat recovery system can be employed with the liquefaction system to enhance thermal efficiency. A unique start-up system can also be employed.
摘要:
Natural gas liquefaction system employing electric motors as compressor drivers. A combination of motors and steam turbines can be powered by a cogeneration plant and employed as drivers.
摘要:
Methods and systems for transportation of a cryogenic fluid. The system includes a floating liquefaction unit receiving a gas from a source, a shuttle vessel for carrying liquefied gas away from the liquefaction unit, and a floating regasification unit for receiving the liquefied gas from the vessel, regassifying the liquefied gas and providing the gas to a distribution system.
摘要:
Systems and methods for storing liquid natural gas is provided. In one embodiment, the natural gas vapor in the storage tank containing the liquefied natural gas may be directed a heat exchange unit attached to the storage tank, cooled by a refrigerant in the heat exchange unit, and then returned to the storage tank.
摘要:
Systems and methods for producing liquid natural gas from heat exchange with liquid nitrogen or air is provided. The produced liquid natural gas may be used as vehicle fuel. After heat exchange, the vaporized liquid nitrogen or air may be routed in the system to regenerate a heat exchange unit and/or a natural gas pretreatment unit. After assisting with the regeneration, the vaporized nitrogen or air may be safely vented to atmosphere. In one embodiment, a system for liquefying natural gas using a refrigerant includes a first treating unit configured to remove a contaminant from the natural gas; a first exchanger unit for liquefying the natural gas using the refrigerant; a second exchanger unit configured to receive the refrigerant from the first exchanger unit, wherein the first exchanger unit and the second exchanger unit operate on alternating cycles; a second treating unit configured to receive the refrigerant from the second exchanger unit; and a storage unit for the receiving the liquid natural gas.
摘要:
A cryogenic fluid storage/processing system which includes a cement box in which is positioned a multiplicity of tanks arranged parallel in one or more layers and surrounded by perlite insulation, and in which is positioned a pump for filling/emptying the tanks. A vaporizer the vaporizing the tank contents is mounted on or adjacent to the box.
摘要:
The subject invention involves a compressor starting torque converter (CSTC) to enable starting up single-shaft gas turbine driven compressor sets, such as in a liquified natural gas (LNG) plant. The system includes a single-shaft gas turbine with an output shaft coaxially connected to the input shaft of the CSTC's torque converter, in turn whose output shaft drives the process load centrifugal compressor. The CSTC operates as a fluid coupling whereby the gas turbine and the compressor shafts are coupled via the working fluid (oil). Once the process load compressor is up to speed, a lock up device is engaged to mechanically couple the gas turbine directly to the compressor and then the torque converter is drained. The impeller and turbine wheel of the CSTC are undersized with regard to the maximum shaft power requirement of the compressor.
摘要:
Methods and systems for transportation of a cryogenic fluid. The system includes a floating liquefaction unit receiving a gas from a source, a shuttle vessel for carrying liquefied gas away from the liquefaction unit, and a floating regasification unit for receiving the liquefied gas from the vessel, regassifying the liquefied gas and providing the gas to a distribution system.