1
Mack D Bowen, Kenneth R Purdy: Process for producing highly activated carbonaceous products. American Can Company, Robert P Auber, Ira S Dorman, Stuart S Bowie, October 28, 1980: US04230602 (20 worldwide citation)

A single-pass, continuous process converts organic feedstocks into activated carbonaceous products having high surface area values. The introduction of air and steam into the bed of material at selected locations, and at controlled rates, enables the economic, dependable and convenient production of ...


2
Mack D Bowen, Kenneth R Purdy: Pyrolysis system with hot gas recirculation. American Carbons, August 14, 1984: US04465556 (16 worldwide citation)

A process and system for continuously pyrolyzing organic feedstock produces a solid carbonaceous residue of controlled volatility, in a manner that is highly energy efficient. The value of the gaseous product and of the pyrolytic oil produced are also optimized.


3
Mack D Bowen: Method and apparatus for producing a carbonaceous residue product. Georgia Tech Research Institute, Newton Hopkins & Ormsby, March 20, 1979: US04145256 (12 worldwide citation)

A carbonaceous residue or char having novel properties is produced from particulate agricultural waste material, such as peanut shells, which upon heating exhibits an exothermic decomposition into an off gas component and a solid component in which the off gas component is more highly reactive to ox ...


4
Mack D Bowen, Kenneth R Purdy: Pyrolysis system with hot gas recirculation. American Carbons, December 6, 1983: US04419185 (7 worldwide citation)

A process and system for continuously pyrolyzing organic feedstock produces a solid carbonaceous residue of controlled volatility, in a manner that is highly energy efficient. The value of the gaseous product and of the pyrolytic oil produced are also optimized.


5
Mack D Bowen, Kenneth R Purdy: Pyrolysis process utilizing pyrolytic oil recycle. American Can Company, Robert P Auber, Stuart S Bowie, Ira S Dorman, March 2, 1982: US04317703 (7 worldwide citation)

A pyrolysis process and system produces a solid residue and a clean, enriched fuel gas. In the process, the pyrolytic oil and filter cake are recycled in such a manner as to produce products of optimal value, and to minimize the need for servicing and downtime of the system. Recycling of water recov ...


6
Mack D Bowen, Kenneth R Purdy: Pyrolysis system utilizing pyrolytic oil recycle. Stuart S Bowie, Ira S Dorman, February 15, 1983: US04373995 (3 worldwide citation)

A pyrolysis process and system produces a solid residue and a clean, enriched fuel gas. In the process, the pyrolytic oil and filter cake are recycled in such a manner as to produce products of optimal value, and to minimize the need for servicing and downtime of the system. Recycling of water recov ...