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  • Users: AMXX
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  1. AMXX

    Reciprocating compressor blocked discharge protection

    Hi; I have a 2-stage (tandem) reciprocating compressor train. Each stage has a recycle valve to control the suction pressure. The compressor capacity is control by: • Speed control (only by the 1st stage suction pressure) • Clearance pocket During the HAZOP of the project, it was requested to...
  2. AMXX

    Reciprocating compressor

    Hi; The capacity of a reciprocating compressor is controlled by "variable speed drive " and "pocket clearance". The compressor train has a recycle valve to control the pressure at the compressor suction scrubber ( transmitter is located at the compressor suction scrubber). This is required to...
  3. AMXX

    Minimum recycle line for reciprocating compresor

    Hi; I have been requested to consider a minimum recycle line for a variable speed electrical reciprocating compressor train which it should be used to protect the system for the train blocked discharge case. For a centrifugal compressor, it is normal to consider a minimum recycle line but for a...
  4. AMXX

    Reciprocating compressor suction blockage

    Hi; I am investigating a reciprocating compressor suction blockage case. In case of the suction scrubber demister blockage about 1 minutes takes till the compressor driver stops. So during this one minute, the compressor cannot have any feed gas as the recycle valve is recycling the gas to the...
  5. AMXX

    Two stage compressor

    Hi ; Is it possible that one stage of a two throw , two stage reciprocating compressor run while the other one is stopped? if yes, except the shaft failure , is there any other possible failure cases to have this scenario ?
  6. AMXX

    Hi; For a reciprocating compresso

    Hi; For a reciprocating compressor, the recycle valve failure is one of the suction PSV sizing scenarios. As during the reciprocating compressor start-up, the discharge Shutdown valve (SDV) should be kept open ( not same as centrifugal compressor which it should be closed), so failure of both...
  7. AMXX

    Stonewall protection

    Hi; As I know for the centrifugal compressors, the stonewall protection is an optional protection (is not mandatory same as Anti-surge protection). However operating in the stonewall condition also damage the compressor so I am thinking if there is no stonewall protection, maybe it should be...

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