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    • 4. 发明专利
    • Gas compressor cleaning
    • GB2558662A
    • 2018-07-18
    • GB201700740
    • 2017-01-17
    • STATOIL PETROLEUM AS
    • LARS BRENNESVEND TARALD KIBSGAARDTOR BJORGEHARALD UNDERBAKKE
    • F04D29/70B08B3/02B08B9/00
    • A method of cleaning deposited solid material from a fouled portion of a gas compressor 6 of a gas processing system 1 in situ, by supplying a liquid cleaning agent to a compressor inlet, a portion thereof remaining in liquid state as it passes through the compressor, and recovering from the compressor outlet a fluid containing removed solid material, thus preventing its advance further downstream. Preferably the gas compressed is a hydrocarbon gas and the liquid cleaning agent is a hydrocarbon liquid produced from the system itself. The liquid may be injected into the gas compressor inlet at a high pressure via a supply valve 8, coming from the liquid phase output of a separator 10 located downstream of the compressor. A cooler (28, fig. 2) may be placed between the compressor outlet and the separator to cool the fluid exiting the gas compressor and cause liquid to condense. An additional separator 3 may be present upstream of the compressor, its gas phase output being supplied to the compressor. Alternatively, there may be only one upstream separator (44, fig. 3), the fluid output of the compressor being recirculated thereto during cleaning via an anti-surge line (51, fig. 3).