Gas separation: apparatus – Degasifying means for liquid – Pressure reducing means
Reexamination Certificate
2006-04-26
2011-12-06
Smith, Duane (Department: 1776)
Gas separation: apparatus
Degasifying means for liquid
Pressure reducing means
C096S201000, C095S246000, C426S488000, C210S180000
Reexamination Certificate
active
08070865
ABSTRACT:
A vacuum vessel for continuous or semi-continuous treatment of oils in connection with deodorization comprises spaces (12, 121,122) through which oil to be treated is brought to pass and means to heat or cool the oil in the form of U-tubes. There are perforated pipes (26) arranged at the bottom of said spaces to lead stripping gas into said oil. The vessel has a connection to a vacuum source (7). The spaces in the vessel are arranged such that the oil to be treated in the vessel flows through the same by gravity. The heating or cooling medium passing the U-tubes is arranged to be pumped therethrough. The U-tubes for heating or cooling medium are arranged in such a way in said spaces that the flow of oil is counter-current to the flow of heating or cooling medium all through the vessel and a number of U-tubes are arranged in groups (13), parallel and in rows above each other in said spaces.
REFERENCES:
patent: 3999966 (1976-12-01), Naylor
patent: 4089880 (1978-05-01), Sullivan
patent: 5628901 (1997-05-01), Lawrence et al.
patent: 505810 (1939-05-01), None
patent: 704232 (1954-02-01), None
patent: WO 8604603 (1986-08-01), None
patent: WO 9533809 (1995-12-01), None
Alfa Laval Corporate AB
Michaud-Kinney Group LLP
Smith Duane
Theisen Douglas J.
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