D.B. Dow, Petroleum Engineer, Bureau of Mines; Methods for Recovering Gasoline from Uncondensed Still Vapors; National Petroleum News (May 31, 1922) pp. 28-31. |
J. Ekstrõm, Dr. H. Bader, Condensation Via Indirect Cooling. Recovery of Gasoline Vapors; Chemie-Technik, 22, Jahrgang (1993), Nr. 10, pp. 42-47. This German reference is believed to be relevant upon a reading of an abstract of the reference written by Derwent World Patent Indexes. The abstract states: Hydrocarbon vapors in gasoline filling stations can be recovered and recirculated as a condensate to the underground storage tanks. The condenser system comprises 3 coolers in series operated with N2 at 0° and N2 at −180° to separate lean gas and recover the condensated gasoline, responsibility. The method prevents hydrocarbon emissions and gasoline losses. |
OPW, OPW Vaporsavor 1, Installation and Trouble Shooting Manual, Draft of Aug. 19, 2002. |
BR 80000565 (Aug. 4, 1981, Brazil). Abstract from Derwent World Patent Indexes stating: The volatile gases leave a storage tank through an air-compensating valve at the tank top, pass through a duct to a water-cooled condenser and then to a valve-controlled tank where uncondensed gases are separated out. The condensed liquid is returned to the storage tank. This system is useful in minimizing the evaporation toss in alc. storage. |