Patents Assigned to L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Geordes Claude
  • Cryogenic air separation apparatus
    Patent number: 11549747
    Abstract: A cryogenic air separation apparatus comprises: a heat exchanger, a first rectification column, a first condenser, a second rectification column, a third rectification column, a second condenser, a high-purity oxygen rectification column, a third condenser, a nitrogen compressor, and a compressed recycled gas line L52 for introducing product nitrogen gas compressed by the first nitrogen compressor into a warm end (heat source) of an ultra-high-purity oxygen vaporizer as a compressed recycled gas.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: January 10, 2023
    Assignee: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Geordes Claude
    Inventors: Kenji Hirose, Shinji Tomita