Robb R Walt

US Patent:

7909899, Mar 22, 2011

Filed:

Jun 28, 2006

Appl. No.:

11/427231

Inventors:

James P. Diebold - Lakewood CO, US
Arthur Lilley - Finleyville PA, US
Kingsbury III Browne - Golden CO, US
Robb Ray Walt - Aurora CO, US
Dustin Duncan - Littleton CO, US
Michael Walker - Longmont CO, US
John Steele - Aurora CO, US
Michael Fields - Arvada CO, US
Trevor Smith - Lakewood CO, US

Assignee:

Community Power Corporation - Littleton CO

International Classification:

C01B 3/36
C01B 3/24
C10K 3/06
C10J 3/00
B01J 7/00

US Classification:

48197R, 48 61, 48202, 48210, 423650

Abstract:

Method and apparatus for generating a low tar, renewable fuel gas from biomass and using it in other energy conversion devices, many of which were designed for use with gaseous and liquid fossil fuels. An automated, downdraft gasifier incorporates extensive air injection into the char bed to maintain the conditions that promote the destruction of residual tars. The resulting fuel gas and entrained char and ash are cooled in a special heat exchanger, and then continuously cleaned in a filter prior to usage in standalone as well as networked power systems.

US Patent:

8529661, Sep 10, 2013

Filed:

Nov 15, 2010

Appl. No.:

12/946696

Inventors:

James P. Diebold - Lakewood CO, US
Arthur Lilley - Finleyville PA, US
Kingsbury Browne, III - Golden CO, US
Robb Ray Walt - Aurora CO, US
Dustin Duncan - Littleton CO, US
Michael Walker - Broomfield CO, US
John Steele - Aurora CO, US
Michael Fields - Arvada CO, US

Assignee:

Afognak Native Corporation - Anchorage AK

International Classification:

B01D 46/00

US Classification:

95 20, 95282, 96397, 96421, 55283, 55299, 55300, 55304

Abstract:

A method and apparatus for removing fine particulate matter from a fluid stream without interrupting the overall process or flow. The flowing fluid inflates and expands the flexible filter, and particulate is deposited on the filter media while clean fluid is permitted to pass through the filter. This filter is cleaned when the fluid flow is stopped, the filter collapses, and a force is applied to distort the flexible filter media to dislodge the built-up filter cake. The dislodged filter cake falls to a location that allows undisrupted flow of the fluid after flow is restored. The shed particulate is removed to a bin for periodic collection. A plurality of filter cells can operate independently or in concert, in parallel, or in series to permit cleaning the filters without shutting off the overall fluid flow. The self-cleaning filter is low cost, has low power consumption, and exhibits low differential pressures.

US Patent:

8574326, Nov 5, 2013

Filed:

Feb 15, 2011

Appl. No.:

13/028090

Inventors:

James P. Diebold - Lakewood CO, US
Arthur Lilley - Finleyville PA, US
Kingsbury Browne, III - Golden CO, US
Robb Ray Walt - Aurora CO, US
Dustin Duncan - Littleton CO, US
Michael Walker - Broomfield CO, US
John Steele - Aurora CO, US
Michael Fields - Arvada CO, US
Trevor Smith - Lakewood CO, US

Assignee:

Afognak Native Corporation - Anchorage AK

International Classification:

C01B 3/36
C10K 3/06
C10J 3/00
B01J 7/00
C01B 3/24

US Classification:

48 61, 48197 R, 48202, 48210, 423650

Abstract:

Method and apparatus for generating a low tar, renewable fuel gas from biomass and using it in other energy conversion devices, many of which were designed for use with gaseous and liquid fossil fuels. An automated, downdraft gasifier incorporates extensive air injection into the char bed to maintain the conditions that promote the destruction of residual tars. The resulting fuel gas and entrained char and ash are cooled in a special heat exchanger, and then continuously cleaned in a filter prior to usage in standalone as well as networked power systems.

US Patent:

8624069, Jan 7, 2014

Filed:

Aug 4, 2009

Appl. No.:

12/535451

Inventors:

James P. Diebold - Lakewood CO, US
Steve Sherwood - Highlands Ranch CO, US
Arthur W. Lilley - Finleyville PA, US
Robb R. Walt - Aurora CO, US

Assignee:

Afognak Native Corporation - Anchorage AL

International Classification:

C07C 1/00
C07C 27/00

US Classification:

585240, 518700, 518701, 481987, 48199 FM, 48197 FM, 48214 A

Abstract:

Methods for converting a carbon-containing feedstock into a fluid transportation fuel are described. The methods may include converting the carbon-containing feedstock into a producer gas comprising H, CO, CO, and N, and reacting the producer gas with a substrate catalyst to produce a combination of Fischer-Tropsch (F-T) products, the F-T products including the fluid transportation fuel. A portion of the F-T products may be catalytically cracked to produce additional amounts of the fluid transportation fuel. A portion of the F-T products may also be hydrogenated to produce additional amounts of the fluid transportation fuel. Apparatuses are also described or converting a carbon-containing feedstock into a fluid transportation fuel. The apparatuses may include a producer gas reactor, a Fischer-Tropsch reactor, a cracking reactor, and a hydrogenation reactor.

US Patent:

20070017859, Jan 25, 2007

Filed:

Jun 28, 2006

Appl. No.:

11/427221

Inventors:

James Diebold - Lakewood CO, US
Arthur Lilley - Finleyville PA, US
Kingsbury Browne - Golden CO, US
Robb Walt - Aurora CO, US
Dustin Duncan - Littleton CO, US
Michael Walker - Longmont CO, US
John Steele - Aurora CO, US
Michael Fields - Arvada CO, US

Assignee:

Community Power Corporation - Littleton CO

International Classification:

C02F 1/00

US Classification:

210170010

Abstract:

A method and apparatus for removing fine particulate matter from a fluid stream without interrupting the overall process or flow. The flowing fluid inflates and expands the flexible filter, and particulate is deposited on the filter media while clean fluid is permitted to pass through the filter. This filter is cleaned when the fluid flow is stopped, the filter collapses, and a force is applied to distort the flexible filter media to dislodge the built-up filter cake. The dislodged filter cake falls to a location that allows undisrupted flow of the fluid after flow is restored. The shed particulate is removed to a bin for periodic collection. A plurality of filter cells can operate independently or in concert, in parallel, or in series to permit cleaning the filters without shutting off the overall fluid flow. The self-cleaning filter is low cost, has low power consumption, and exhibits low differential pressures.

US Patent:

20140161690, Jun 12, 2014

Filed:

Nov 25, 2013

Appl. No.:

14/088803

Inventors:

- Archorage AK, US
Steve Sherwood - Highlands Ranch CO, US
Arthur W. Lilley - Finleyville PA, US
Robb R. Walt - Aurora CO, US

Assignee:

AFOGNAK NATIVE CORPORATION - Anchorage AK

International Classification:

C07C 1/04

US Classification:

422636

Abstract:

Methods for converting a carbon-containing feedstock into a fluid transportation fuel are described. The methods may include converting the carbon-containing feedstock into a producer gas comprising H, CO, CO, and N, and reacting the producer gas with a substrate catalyst to produce a combination of Fischer-Tropsch (F-T) products, the F-T products including the fluid transportation fuel. A portion of the F-T products may be catalytically cracked to produce additional amounts of the fluid transportation fuel. A portion of the F-T products may also be hydrogenated to produce additional amounts of the fluid transportation fuel. Apparatuses are also described for converting a carbon-containing feedstock into a fluid transportation fuel. The apparatuses may include a producer gas reactor, a Fischer-Tropsch reactor, a cracking reactor, and a hydrogenation reactor.