Method and apparatus for controlling gasoline vapor emissions

Details Method and apparatus for controlling gasoline vapor emissions Method and apparatus for controlling gasoline vapor emissions

B - Operations, Transporting

29

C

137/7

B29C 39/26 (2006.01) F23G 7/06 (2006.01)

Patent

CA 1293424

55-280F METHOD AND APPARATUS FOR CONTROLLING GASOLINE VAPOR EMISSIONS Abstract of the Disclosure A method and apparatus for abatement of gasoline vapor emissions from a vent pipe at a gasoline service station in which a vapor piping system interconnects the vent pipe with gasoline storage tanks and gasoline dispensing nozzles in the service station, the apparatus including a pilot burner with a pilot ignitor, a main burner, first and second vapor pressure switches in the vent pipe for sensing and controlling pressure of vapor in the vapor piping system to maintain the pressure of vapor slightly below atmospheric pressure, a regenerative small turbine located downstream from the first and second pressure switches for moving vapor in the vapor piping system; a sensor for the pressure of vapor downstream from said turbine for causing at a selected downstream pressure of vapor, admission of vapor to the pilot burner, and a sensor for the pilot flame at the pilot burner for causing admission of vapor to the main burner for ignition by the pilot flame.

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