To Belt Patents (Class 105/110)
  • Reboiler-condenser with boiling and condensing surfaces enhanced by extrusion
    Patent number: 4715431
    Abstract: The invention relates to a heat exchanger for use as a reboiler-condenser which increases the efficiency of heat transfer between boiling and condensing fluids such as cryogens, e.g. oxygen and nitrogen in an air separation unit. The exchanger has enhanced boiling and condensing surfaces and slightly inclined condensing passages built up from individually extruded passageway elements.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: December 29, 1987
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Alexander Schwarz, Charles E. Kalb, Charles C. Goebel