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SUPERCRITICAL CARBON DIOXIDE POWER GENERATION SYSTEM INCLUDING DRY GAS SEAL AND METHOD OF OPERATING THE SAME

  • US 20200131920A1
  • Filed: 06/26/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/30/2018
  • Status: Active Grant
First Claim
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1. A supercritical carbon dioxide power generation system including a dry gas seal, comprising:

  • a turbine;

    a cooler;

    a compressor;

    a heater;

    a carbon dioxide injecting portion injecting carbon dioxide as a working fluid from a carbon dioxide tank into an intake side of the compressor;

    a heater flow path provided in the heater and configured to introduce and heat carbon dioxide generated in the compressor and then to discharge carbon dioxide to the turbine;

    a seal gas flow path diverged from the heater flow path and guiding at least part of carbon dioxide heated on the heater flow path to be injected into a dry gas seal portion of the compressor and to be used as a seal gas;

    a seal gas valve installed on the seal gas flow path and opening/closing of the seal gas flow path; and

    a controller controlling an amount of an opening degree of the seal gas valve according to a temperature of carbon dioxide heated by the heater.

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