Frederick T Varani
Engineers at Corona St, Denver, CO

8206124, Jun 26, 2012

Jun 20, 2008

12/142902

Frederick T. Varani - Golden CO, US
Paul B. Trost - Golden CO, US

F04B 49/20, E21B 43/12

417 34, 13756517, 166 53

An oil-gas vapor collection, storage, and recovery system ensures that no air or oxygen leakage into the production tank occurs when gauging and/or emptying a tank. The system provides a constant reservoir-type storage system by utilizing a variable volume gas bag, expanding with a surge of gas from the separator and with minimal water column pressure from the plunger lift system, thereby containing the gas surge, but contracting with gas dissipation thus minimizing the compressor cycling, while accommodating rapid liquid and vapor influxes into the tank thus maintaining constant tank pressure. With expansion, the bag actuates a switch which activates a compressor, which, in turn, compresses the contained gas into the pipeline. Upon bag collapse, a switch is activated to turn off the compressor. Thus, the system provides constant storage tank pressure because the gas bag accommodates and controls variable gas volume.

3933628, Jan 20, 1976

Jul 10, 1974

5/487039

Frederick T. Varani - Golden CO

Bio-Gas of Colorado, Inc. - Denver CO

C02C 114, F24J 302

210 12

This invention relates to an improved anaerobic digestion apparatus for decomposable organic materials characterized by a digestor covered and sealed by a liquid-filled pond heated with solar energy. The effluent from the fermentation reaction taking place in the digestor has excellent absorptivity for solar energy and is advantageously used as the heat transfer medium filling the pond. The pond is covered with a translucent roof capable of transmitting solar energy, such roof cooperating with the liquid-filled pond therebeneath to produce an artificial environment of reduced sensitivity to atmospheric conditions which is operative to help maintain a condition of stable equilibrium within the digestor. In the preferred embodiment, the vessel forming part of the digestor in which the fermentation reaction takes place comprises an excavated trench lined with a suitable fluid-impermeable membrance while the roof over the pond consists of an inflatable air-supported bubble. Also preferred is to float the pond upon the fermenting material in the digestor by covering the latter with a flexible fluid-filled float-supported membrane.

3946679, Mar 30, 1976

Dec 28, 1973

5/429096

Frederick T. Varani - Golden CO

Adrian Const. Co. - Dayton OH

B01D 3518, F23B 132, F23G 300, F26B 1112

110 8C

Moisture is removed from a fluid waste product or material by pumping the material axially through an elongated porous tube, forcing a gas generally radially inwardly through the tube to effect disintegration of the material, and then directing the material through a perforated duct which receives heated air from a burner unit. As the moisture evaporates from the material, the moisture vapor is separated from the dry solid particles by a separator connected to a suction blower for inducing a draft. The apparatus may also be adapted for treating or drying other materials such as slurries of metallurgical ores and for oxidizing or reducing mineral-type materials in addition to drying finely dispersed metal slurries in the production of powdered metals. Another embodiment of the apparatus is used for burning a fluid waste product or material.