hydrocracker

/ˈhaɪdroʊˌkrækər/
noun
  1. A machine or industrial unit that breaks down large hydrocarbon molecules into smaller ones using heat, pressure, and hydrogen, used in oil refineries.
    • The refinery invested millions of dollars to upgrade its hydrocracker.
    • The new hydrocracker at the plant can process thousands of barrels of oil each day.
    • Workers monitor the temperature inside the hydrocracker to ensure safe operation.