Abstract: A method and apparatus for preventing the discharge of gasoline dispensing station hydrocarbon vapors into the atmosphere comprising an incinerator which is utilized to burn a mixture of the hydrocarbon vapors and air supplied by an air compressor. Control means are provided to insure that the velocity of the hydrocarbon vapors supplied to the incinerator is at least 10 feet per second and the pressure of the air entering the incinerator is at least 3 inches of water above atmospheric pressure.

Abstract: A method and apparatus for recovering vapors from at least one receiving tank into which a volatile liquid is introduced consisting of conduit means for conveying vapors from the tank, refrigeration means, pumping means connected to the conduit means for conveying vapors from the tank and having an outlet connected to the refrigeration means, a vapor recirculation conduit from the refrigeration means outlet to the pumping means inlet, a liquid drain conduit from the refrigeration means, at least one canister containing filtering media and having an inlet and outlet, the canister inlet being connected to the recirculation conduit, the canister outlet being in communication with the atmosphere, the canister being further provided with inlet valving and outlet valving allowing for the isolation of the canister inlet from the recirculation conduit and the outlet to the atmosphere, and a vacuum means having an inlet in communication with the canister and having an outlet in communication with the refrigeration mea