Arthur F Johnson
Engineers at Fox Dr, Boulder, CO

4813473, Mar 21, 1989

Mar 28, 1988

7/174085

Arthur F. Johnson - Boulder CO

F28D 1904

165 7

A compact and maintenance-free means and method of regenerating the sensible heat from flue gases of fossil fuel furnaces by heat exchange through two circular layers of rock beds rotating under two semi-circular mantles with the first mantle applying hot flue gases to the beds and the second withdrawing preheated ambient air needed for combustion by said furnaces. When used for power plant flue gas treatment, layers of acid-resistant pipes containing boiler feedwater are sandwiched between the two rock bed layers to usefully recover the heat units arising from moisture condensation. The enormous water of condensation collects flyash and sulphur dioxide thus removing these pollutants from the stack gases. The heavy rock beds rotate slowly beneath the fixed mantles in a circular, pan-shaped, steel vessel floating on and cooled by a circular pond of water. Friction of rotation is minimal and gas leakage principally prevented by liquid seals.

4876986, Oct 31, 1989

Sep 11, 1987

7/096183

Arthur F. Johnson - Boulder CO

Energy Conservation Partnership, Ltd. - Boulder CO

F28F 2108, F28F 1312

122 20B

A compact and maintenance-free means and method of regenerating the sensible heat from flue gases of fossil fuel furnaces by heat exchange through two circular layers of rock beds rotating under two semi-circular mantles with the first mantle applying hot flue gases to the beds and the second withdrawing preheated ambient air needed for combustion by said furnaces. When used for power plant flue gas treatment, layers of acid-resistant pipes containing boiler feedwater are sandwiched between the two rock bed layers to usefully recover the heat units arising from moisture condensation. The enormous water of condensation collects flyash and sulphur dioxide thus removing these pollutants from the stack gases. The heavy rock beds rotate slowly beneath the fixed mantles in a circular, pan-shaped, steel vessel floating on and cooled by a circular pond of water. Friction of rotation is minimal and gas leakage principally prevented by liquid seals.

4874585, Oct 17, 1989

Mar 8, 1988

7/165312

Arthur F. Johnson - Boulder CO
Robert L. Sackett - Los Angeles CA

RCM Industries Corporation - Los Angeles CA

B01J 812

422171

Improved methods and apparatus for removing unwanted pollutants from flue gases are disclosed. A sequence of at least three vertical beds of particulates is disposed in the flue gas exhaust duct. A first bed comprises boiler ash or sand. Lime in the fly ash and sulfuric acid and water in the flue gas react with the particulates to form gypsum, removing the fly ash from the flue gas. In the second bed, the remaining sulfuric acid is condensed and removed on a further bed of boiler ash. In the third bed, a catalyst, typically an activated aluminous particulate with an alkali coating thereon, provided by adding ammonia to the flue gas stream, condenses out the remaining sulphur dioxide, which can then be removed from the catalyst particles in a regenerative step. A scrubber embodying these principles is readily retrofittable to pre-existing power plants burning sulphur-containing coal.

5344617, Sep 6, 1994

Jul 26, 1993

8/097783

Arthur F. Johnson - Boulder CO

F01N 302, B01D 5334

422172

A system and method of converting flue gas pollutants to marketable byproducts of ammonium bisulfite and ammonium bisulfate, which are collected, and to other harmless byproducts which may be safely discharged is provided. The system removes as much particulate material and reaction inhibiting coal tar components as possible via an electrostatic precipitator and then passes the flue gas through a heat exchanger, wherein it is cooled by boiler feedwater. A suds producing detergent is introduced to the flue gas in order to separate any remaining coal tar components from the condensing moisture. Due to the removal of the tar components, sulfur dioxide and nitrous oxide readily dissolve in the condensing moisture when sufficiently cooled.

4750330, Jun 14, 1988

Apr 9, 1987

7/036212

Arthur F. Johnson - Boulder CO

F01K 1700

60715

An apparatus for recovering mechanical energy from the exhaust steam from a power plant is disclosed. The exhaust steam is led to a generally U-shaped sealed reservoir containing two legs filled with water. The water is driven back and forth between the legs causing the exhaust steam to condense while generating energy from the oscillating water in the reservoir.

5401480, Mar 28, 1995

Apr 4, 1994

8/222788

Arthur F. Johnson - Boulder CO

Energy Conservation Partnership Ltd. - Boulder CO

C01B 1700

42324306

A system is provided for converting flue gas pollutants to useful ammonium sulfate byproducts in an instantaneous gas phase reaction between a gaseous ammoniacal substance and the sulfur oxides in the flue gas. The system also removes other pollutants by converting them into other harmless byproducts and collects useful ammonium sulfate compounds.

4173304, Nov 6, 1979

Oct 14, 1977

5/842320

Arthur F. Johnson - Boulder CO

F24J 302

237 1A

In my U. S. Pat. No. 4,054,246, a double-walled structure collects solar heat with air as the heat transfer medium, which heat is stored in subterranean gravel pits. In the present invention, (1) the design of the gravel pits is improved, (2) the efficiency of the solar collectors is improved, whereby needed collection area is reduced, (3) seepage into the pits is minimized, and (4) novel modes of operation using ambient air are disclosed.

4802897, Feb 7, 1989

Aug 5, 1986

6/893425

Arthur F. Johnson - Boulder CO

B01D 1900

55 55

A process and apparatus for separating a volatile gas from a liquid in which it is dissolved. The liquid flows through a conduit having obstructions to cause separation by centripetal forces created as the liquid flows around the obstruction. The gases thus freed are collected on a surface disposed within the flow. The flow is advantageously through a syphon-like device thus reducing the pressure in the liquid to further assist separation.

5273727, Dec 28, 1993

Jul 16, 1991

7/730417

Arthur F. Johnson - Boulder CO

Energy Conservation Partnership, Ltd. - Boulder CO

C01B 1700, C01B 1720, C01B 2100, C01C 124

42324306

A system is provided for converting flue gas pollutants to useful dry or concentrated ammonium bisulfite and ammonium bisulfate byproducts and other harmless byproducts, and for collecting the useful byproducts. The system also removes particulate material to maximize the desired reactions, and cools the flue gas in heat exchange with boiler feedwater.

5551237, Sep 3, 1996

Jun 6, 1995

8/470093

Arthur F. Johnson - Boulder CO

B60K 1600, F03G 600, F16D 3102

606418

A process of converting steam to hydro-electric power through a process of allowing steam to displace water from a tank for operating a turbine or pelton wheel. The process allows hydro-electric power to be generated at a greatly increased efficiency. Preferably, two concrete, underground chambers are used to receive steam which exert pressure to displace the water. The process allows existing power plants to utilize excess steam to generate additional power, and thus greatly increase the overall efficiency of the plant. Solar energy heats the water to produce low pressure steam in a transparent enclosure, and further heats the vapor passing through transparent conduits leading into the underground chambers.