The gas compression system for a gas pipeline includes a reciprocating compressor arranged to compress the gas and a gas turbine engine arranged to drive the reciprocating compressor. The gas turbine engine has a turbine section with a high-pressure section and a low-pressure section, wherein only the low-pressure section is mechanically coupled through a mechanical connection to a reciprocating compressor arranged to compress the gas transported by the gas pipeline. The mechanical connection comprises a gearbox, an elastomeric coupling and a flywheel. The gas compression system is particularly suitable as a gas pipeline compression station using the gas transported by the gas pipeline as fuel. Advantageously, the gas turbine engine can reduce NOx formation during combustion by injecting diluent in the combustor, the diluent being advantageously demineralized water recovered from the inlet air of the gas turbine engine.

The invention relates to a backfeeding installation (30) which comprises: at least one compressor (21) for compressing gas from a network (15), an automaton (25) for controlling the operation of at least one compressor, a remote communication means (9) for receiving at least one instantaneous pressure value captured remotely on the network upstream of the backfeeding installation, a means (8) for predicting the evolution of the pressure in the network upstream of the backfeeding installation, depending, at least, on the pressure values received, a means (7) for determining a pressure threshold value for stopping or starting at least one compressor according to the prediction of the evolution of pressure,
the automaton controlling the stopping or the operation of at least one compressor when the pressure at the inlet of each compressor is lower, or higher, respectively, than the pressure threshold value that was determined.

The invention relates to a backfeeding installation (30) which comprises: at least one compressor (21) for compressing gas from a network (15), an automaton (25) for controlling the operation of at least one compressor, a remote communication means (9) for receiving at least one instantaneous pressure value captured remotely on the network upstream of the backfeeding installation, a means (8) for predicting the evolution of the pressure in the network upstream of the backfeeding installation, depending, at least, on the pressure values received, a means (7) for determining a pressure threshold value for stopping or starting at least one compressor according to the prediction of the evolution of pressure,
the automaton controlling the stopping or the operation of at least one compressor when the pressure at the inlet of each compressor is lower, or higher, respectively, than the pressure threshold value that was determined.

A circulating inset-gas seal system based on gas-supply servo device and QHSE based storage and transportation method are provided. The gas-supply servo device includes a servo constant pressure unit including: inlet gas compressors a charging check valve, a gas supply container and a degassing valve control unit which are connected in sequence and communicated and controlled by a one-way valve. According to a preset gas pressure of the gas phase space in the material container, a inert sealing medium filled in the material container group is received, stored and released via an inerting pipe to form a station-type circulating inert seal system. A multi-group circulating inerting system cooperates with a mobile material container for self-sealing loading and unloading, which is capable of realizing a QHSE storage and transportation system with no gas phase emission.

A circulating inset-gas seal system based on gas-supply servo device and QHSE based storage and transportation method are provided. The gas-supply servo device includes a servo constant pressure unit including: inlet gas compressors a charging check valve, a gas supply container and a degassing valve control unit which are connected in sequence and communicated and controlled by a one-way valve. According to a preset gas pressure of the gas phase space in the material container, a inert sealing medium filled in the material container group is received, stored and released via an inerting pipe to form a station-type circulating inert seal system. A multi-group circulating inerting system cooperates with a mobile material container for self-sealing loading and unloading, which is capable of realizing a QHSE storage and transportation system with no gas phase emission.

The invention relates to an energy-optimized backfeeding installation (30), comprising: at least one compressor (21) between a gas network (15) at a first pressure and a gas network (10) at a second pressure higher than the first pressure, said compressor being driven by an electric motor, an automaton (25) for controlling the operation of each compressor, at least one sensor (19) for quality compliance of the gas circulating in the compressor, at least one meter (20) for metering a flow rate of gas circulating in the compressor, at least one filter (22) for filtering the gas circulating in the compressor, a gas expander for expanding gas initially at the second pressure in order to supply the gas network at the first pressure, and a generator driven by the gas expander.

The invention relates to an energy-optimized backfeeding installation (30), comprising: at least one compressor (21) between a gas network (15) at a first pressure and a gas network (10) at a second pressure higher than the first pressure, said compressor being driven by an electric motor, an automaton (25) for controlling the operation of each compressor, at least one sensor (19) for quality compliance of the gas circulating in the compressor, at least one meter (20) for metering a flow rate of gas circulating in the compressor, at least one filter (22) for filtering the gas circulating in the compressor, a gas expander for expanding gas initially at the second pressure in order to supply the gas network at the first pressure, and a generator driven by the gas expander.

A system for reducing pressure and extracting energy from natural gas pipelines or the cryogenics industry can include an electrolyzer that produces hydrogen, a heating device adapted to heat the natural gas in the pipeline, and a device adapted to extract energy from expansion of the natural gas. The extracted energy can be used to power the electrolyzer and/or heat the natural gas. The system can be used to extract energy from gas expansion.

A system for reducing pressure and extracting energy from natural gas pipelines or the cryogenics industry can include an electrolyzer that produces hydrogen, a heating device adapted to heat the natural gas in the pipeline, and a device adapted to extract energy from expansion of the natural gas. The extracted energy can be used to power the electrolyzer and/or heat the natural gas. The system can be used to extract energy from gas expansion.

The transportation of captured carbon from production sites to a destination at which it can be stored or used traditionally requires the carbon to be carried into a tanker truck for road transport, which is costly. Disclosed embodiments eliminate or reduce this cost by compressing the captured carbon into an existing natural gas pipeline. The existing network of pipelines can then be used to transport the captured carbon to a distant destination, while potentially picking up additional captured carbon along the way. In addition, a portion of the captured carbon at each production site may be redirected back to the engine of the compressor to enable higher power density and prevent knocking.