Bio-catalytic oxidation reactor

• US 5,981,270 A
• Filed: 04/21/1998
• Issued: 11/09/1999
• Est. Priority Date: 04/21/1998
• Status: Expired due to Fees

• Current Assignee: Environmental Products & Technologies Corp. (Waste Management Systems Ltd.)
• Original Assignee: Lifeline Enterprises, LLC
• Inventors: Roberts, Verlin Jay, Roberts, Gary Dean
• Primary Examiner(s): Beisner, William H.
• Application Number:
  US09/064,529
• Time in Patent Office: 567 Days
• Field of Search: 435/262, 435/290.2, 435/290.3, 435/290.4, 435/286.6, 435/286.7, 71/8-10, 422/209, 366/220, 366/225, 366/227, 366/228, 366/233
• US Class Current: 435/290.3
• CPC Class Codes: C05F 17/70 Controlling the treatment in response to process parameters
• CPC Class Codes: C05F 17/929 Cylinders or drums
• CPC Class Codes: C05F 17/964 Constructional parts, e.g. floors, covers or doors
• CPC Class Codes: C05F 17/979 the other material being gaseous
• CPC Class Codes: Y02P 20/145 the feedstock being materials of biological origin
• CPC Class Codes: Y02W 30/40 Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Abstract

The present invention relates to a bio-catalytic oxidation reactor for remediation of organic wastes and more particularly to a bio-reactor for optimizing the process of oxidation reduction, or composting, of organic wastes or by-products. The reactor includes an elongated cylindrical vessel supported for rotation and includes loading and discharge chutes mounted on the ends of the vessel which include feed assemblies mounted to the vessel end plates such that the feed assemblies rotate when the vessel rotates.

Claims

1. A bio-catalytic reactor for continuous flow oxidation of organic wastes which includes a loading chute and a discharge chute aligned with and spaced from each other, said chutes being fixed in position;

an elongated cylindrical vessel positioned between said chutes and supported for rotation about its longitudinal axis on pairs of rollers, said vessel having an annular end plate adjacent each chute, each end plate having a centrally-located opening, each chute having a cylindrical collar received within the opening in the adjacent end plate;

a rubbing seal located between each cylindrical collar and the adjacent end plate;

a feed asssembly located at each end of said vessel, each feed assembly including a movable member which protrudes through the collar of the associated chute and is mounted on the adjacent end plate so as to rotate therewith; and

an elongated tubular header positioned along the longitudinal axis of the vessel and supported on the two chutes.

2. A bio-catalytic reactor as defined in claim 1 in which each feed assembly includes a spiral blade mounted on a hollow hub which is telescoped over said header, each hub being mounted on the interior of the adjacent end plate.

3. A bio-catalytic reactor as defined in claim 2 which includes a series of tubes connected to and projecting from said header;

oxygen supply means connected to said header and tubes for injecting oxygen into said vessel; and

at least one temperature sensor mounted on said header.

4. A bio-catalytic reactor as defined in claim 3 which includes a programmable logic controller connected to said temperature sensor and operatively connected to said oxygen supply means for controlling the injection of oxygen in response to temperatures within said vessel in accordance with a predetermined program.

5. A bio-catalytic reactor as defined in claim 4 which includes a pipe extending axially within and projecting vertically from said header;

and an exhaust fan and a bio-filter connected to said pipe for removing gases from said vessel.

6. A bio-catalytic reactor as defined in claim 5 wherein said controller is operatively connected to said exhaust fan to control the build up of gases within said vessel in accordance with a predetermined program.

7. A bio-catalytic reactor as defined in claim 6 which includes a motor operatively connected to rotate said vessel, said controller being operatively connected to said motor.

8. A bio-catalytic reactor as defined in claim 2 in which the collar of the discharge chute includes a semi-cylindrical shell which protrudes into the interior of the vessel below the feed assembly, and a circular plate secured to the header adjacent the shell.

9. A bio-catalytic reactor as defined in claim 8 which includes a semi-cylindrical shield slidably supported on the shell above the feed assembly;

and an operating handle attached to said shield and extending to the exterior of the discharge chute.

10. A bio-catalytic reactor as defined in claim 9 which includes a plurality of radially extending paddles mounted on the interior of the vessel in proximity with said shell to drop material onto the feed assembly when the shield has been opened by the operating handle.

11. A bio-catalytic reactor for continuous flow oxidation of organic wastes which includes a loading chute and a discharge chute aligned with and spaced from each other, said chutes being fixed in position;

an elongated cylindrical vessel positioned between said chutes and supported for rotation about its longitudinal axis on pairs of rollers, said vessel including an annular plate affixed to each end thereof adjacent each chute, each such plate having a centrally-located circular opening;

said discharge chute having a cylindrical collar received within the opening in the adjacent plate;

a feed assembly located adjacent the discharge chute, said feed assembly including a movable member which protrudes through said collar into the vessel and is mounted on the interior of the adjacent plate; and

an elongated tubular header positioned along the longitudinal axis of the vessel and supported on the two chutes.

12. A bio-catalytic reactor as defined in claim 11 in which the feed assembly includes a spiral blade mounted on a hollow cylindrical hub which is telescoped over said header.

13. A bio-catalytic reactor as defined in claim 12 in which the collar of the discharge chute includes a semi-cylindrical shell which protrudes into the interior of the vessel below the feed assembly;

and a circular plate secured to the header adjacent said shell.

14. A bio-catalytic reactor as defined in claim 13 which includes a plurality of radially extending paddles mounted on the interior of the vessel in proximity with said shell to drop material onto the feed assembly as the vessel is rotated.

15. A bio-catalytic reactor as defined in claim 14 which includes a semi-cylindrical shield slidably supported on the shell above the feed assembly;

and an operating handle attached to said shield and extending to the exterior of the discharge chute.