A modular gas turbine system is disclosed. The system includes a base plate and a gas turbine engine mounted on the base plate. The gas turbine engine is drivingly coupled to a rotating load mounted on the base plate. A supporting frame extends above the base plate. A first bridge crane and a second bridge crane are movably supported on the supporting frame.

The system comprises: a main driver configured for rotating at a substantially constant rotational speed; a rotating load configured to be driven into rotation by the main driver; a controller, for controllably adjusting a load rotational speed; a variable speed transmission, arranged between the main driver and the load and comprised of a speed summing gear arrangement having a first input shaft, a second input shaft and an output shaft; an auxiliary driver, mechanically coupled to the second input shaft of the speed summing gear arrangement. The first input shaft of the speed summing gear arrangement is drivingly coupled to the main driver. The output shaft of the speed summing gear arrangement is drivingly coupled to the rotating load. The speed of the output shaft is a combination of a speed of the main driver and of a speed of the auxiliary driver.

The system comprises: a main driver configured for rotating at a substantially constant rotational speed; a rotating load configured to be driven into rotation by the main driver; a controller, for controllably adjusting a load rotational speed; a variable speed transmission, arranged between the main driver and the load and comprised of a speed summing gear arrangement having a first input shaft, a second input shaft and an output shaft; an auxiliary driver, mechanically coupled to the second input shaft of the speed summing gear arrangement. The first input shaft of the speed summing gear arrangement is drivingly coupled to the main driver. The output shaft of the speed summing gear arrangement is drivingly coupled to the rotating load. The speed of the output shaft is a combination of a speed of the main driver and of a speed of the auxiliary driver.

An integrated method for the production of liquefied natural gas (LNG) and syngas is provided. The method can include the steps of: utilizing letdown energy of a high pressure natural gas stream that is withdrawn from a natural gas pipeline to provide a warm temperature cooling; utilizing a refrigeration cycle to provide a cold temperature cooling, wherein the refrigeration cycle comprises a refrigerant recycle compressor that is powered utilizing a steam turbine; and cooling a second high pressure natural gas stream using the warm temperature cooling and the cold temperature cooling to produce an LNG product stream. The second high pressure natural gas stream is withdrawn from the natural gas pipeline, and the steam turbine is powered by high pressure steam that is produced from a syngas production facility.

A system for renewable energy storage, providing integral synthesis of heat source cryo-fuel and heat sink refrigerant for distributed electric generation and motor vehicle prime movers and refrigerant liquefiers. Fuel synthesis is by gasification and anaerobic digestion of organic feedstock with heat recovery to drive thermo-chemical reactor and air and fuel liquefiers.

A system for renewable energy storage, providing integral synthesis of heat source cryo-fuel and heat sink refrigerant for distributed electric generation and motor vehicle prime movers and refrigerant liquefiers. Fuel synthesis is by gasification and anaerobic digestion of organic feedstock with heat recovery to drive thermo-chemical reactor and air and fuel liquefiers.

A method is proposed for compressing a gas in stages in a compressor arrangement (100, 200, 300, 400) having a plurality of compression stages (I-VI) which are connected together sequentially by a main line (1) and in which the gas, guided through the main line (1), is respectively compressed from a suction-side pressure level to a pressure-side pressure level and is heated by this compression from a suction-side temperature level to a pressure-side temperature level, wherein a feedback amount of the gas, guided through the main line (1), is at least temporarily removed from the main line (1) downstream of one of the compression stages (V), is fed to an expansion process, and is fed back into the main line (1) upstream of the same compression stage (V). It is provided that the pressure-side pressure level of the compression stage (V) downstream of which the feedback amount is removed from the main line (1) is a supercritical pressure level, that the feedback amount is expanded to a subcritical pressure level, that the feedback amount is fed to the expansion process at the pressure-side temperature level of the compression stage (V) downstream of which it is removed from the main line (1), and that the feedback amount is cooled only after being expanded and before and/or after being fed back into the main line (1). The invention also relates to a compressor arrangement (100, 200, 300, 400).

A modular gas turbine system is disclosed. The system includes a base plate and a gas turbine engine mounted on the base plate. The gas turbine engine is drivingly coupled to a rotating load mounted on the base plate. A supporting frame extends above the base plate. A first bridge crane and a second bridge crane are movably supported on the supporting frame.

Methods for chilling a natural gas stream may comprise: obtaining an expanded natural gas stream from an outlet of an expander, in which the expanded natural gas stream has a lower temperature and pressure than does the natural gas stream; introducing at least a portion of the expanded natural gas stream to a heat exchanger to promote indirect thermal communication between the expanded natural gas stream or a portion thereof and an external refrigerant circulating through the heat exchanger by way of a cooling loop; obtaining a chilled natural gas stream from the heat exchanger; introducing the chilled natural gas stream to a cold separator; and obtaining from the cold separator a further chilled natural gas stream as an overhead stream. The cooling loop comprises at least one compressor, and the expander supplies at least a portion of the power needed to operate the at least one compressor.

An arrangement for liquefying natural gas is provided. The arrangement includes a gas turbine unit that includes a gas turbine compressor, a steam turbine unit, a first compressor unit, a shiftable clutch, a heated steam generator for supplying steam to the steam turbine unit, and a second compressor unit. The steam turbine unit and the first compressor unit have a common, rigidly connected first shaft assembly, while the gas turbine unit and the second compressor unit have a common, rigidly connected second shaft assembly. In order to increase economic efficiency, the first shaft assembly and the second shaft assembly are operable to be connected to and disconnected from each other using the clutch. A suitable method for starting said arrangement is also provided.