Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Patent
1993-11-16
1995-11-07
Bushey, C. Scott
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
95 19, 95 50, 96 4, B01D 6100
Patent
active
054644666
ABSTRACT:
An apparatus and method for maintaining a desired pressure within a fuel storage tank or tanks while minimizing or eliminating the amount of pollutants discharged from the fuel storage tank(s). A fuel storage tank is provided with a conduit and a chamber interfaced along the path of the conduit such that all fluid passing through the conduit must pass through the chamber. A fractionating membrane is housed within the chamber for capturing pollutants while allowing air to pass through. As pollutants are collected on the fractionating membrane, they permeate, thereby reducing the pressure in the tank and associated conduit. A vapor pump is provided for drawing vapor through the conduit and the membrane, and for drawing pollutants off of the membrane. A pressure transducer located in the tank or associated piping makes the vapor pump responsive to the pressure therein. A vent is further provided for allowing air into the tank and piping and for depressurizing the tank and piping. The apparatus of the present invention may be provided with a conduit for returning the pollutants to the fuel storage tank(s).
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Magazine: "Das Magazin for Wirtschaft, Forschung, Technik, Umwelt" Article Entitled: "Kohlenwasserstoffe aus Gasstromen abtrennen" by Von K. Ohlrogge, dated Jun. 1993.
A Reprint from "Separation Science and Technology" Article entitled: "Engineering Aspects of the Plant Design to Separate Volatile Hydrocarbons By Vapor Permeation" by K. Ohlrogge, J. Brockmoller, J. Wind, D. Behling, dated 1992.
Paper entitled "Small Scale Applications to Separate Organic Vapors by Means of Membranes" by K. Ohlrogge and J. Wind undated.
Paper entitled "Gossler--Regas Systems" Author unnamed-Undated.
paper Presented at "The 1993 Eleventh Annual Membrane Technology/Separations Planning Conference" Oct. 11, 12, 13, 1993 Newton, Massachusetts entitled Volatile Organic Compound Control Technology By Means of Membranes by K. Ohlrogge.
Paper Presented at "The 1991 Annual Membrane Technology/Planning Conference"0 Nov. 4-6, 1991 Newton, Mass. entitled Operating Experience with membrane Systems in Gasoline Tank Farms by K. Ohlrogge.
Nanaji Seifollah S.
Pope Kenneth L.
Sobota Richard R.
Bushey C. Scott
Gilbarco Inc.
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