Comments by "Neolithic Transit Revolution" (@neolithictransitrevolution427) on "Electrifying natural resources to counter Trump's tariff war" video.
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@vanhoot2234 sorry, now that I'm awake, the way NG pump stations normally work is they vent some of the NG from the pipeline into a side compartment. This side compartment also takes in air, to fuel combustion, and just like in a powerplant that combustion spins a turbine, but instead of generating electricity it pressurizes the pipeline. And it does this by spinning a wheel inside the pipeline, again usually, using a physical axel that connects through a hole in the wall between the wheel on the inside of the pipe and the turbine in the pump station.
So you have leakage along the turbine, and you have leakage where the NG is taken out of the pipe to the pump station.
An electric turbine is usually a closed system. The turbine is driven with an electric motor, and there is no axel going through the pipe. Often a magnetic mechanism may be used so the a motor spinning externally pulls a wheel increasing pressure internally without physical contact. Otherwise the motor may be internal (harder to maintain). But no NG has to be diverted to spin.
Don't quote this number but I believe something like 14% of methane leakage from NG is in pipelines mainly at pump stations. Beside the fact that you are burning NG, reducing product moved and releasing emissions, rather than powering the pump with some mix of renewables.
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