David S Wakefield

US Patent:

7451591, Nov 18, 2008

Filed:

May 8, 2006

Appl. No.:

11/382077

Inventors:

David W. Wakefield - Houston TX, US
Robert G. Jackson - Houston TX, US
Xiao Rong Jackson - Xian, CN

Assignee:

Econo-Power International Corporation - Houston TX

International Classification:

F02C 3/26

US Classification:

60 39464, 60 3912

Abstract:

A method of using an apparatus for producing electric power or mechanical drive in which fuel gas produced in a gasifier using air as an oxidant is supplied to the gasifier by extraction from the exit of the air compressor of a gas turbine.

US Patent:

20040006917, Jan 15, 2004

Filed:

Jul 9, 2002

Appl. No.:

10/191617

Inventors:

David Wakefield - Houston TX, US
Robert Jackson - Xi'an, CN

International Classification:

C10J003/00

US Classification:

048/202000, 048/210000, 048/209000, 048/1970FM, 048/06200R, 048/077000, 048/089000, 048/101000, 048/119000

Abstract:

A fuel preparation apparatus in which coal or coal and other carbon containing material is converted to an environmentally acceptable fuel gas by the reaction with air and steam at a pressure of from 20 to 90 pounds per square inch absolute suitable for providing fuel to a gas turbine, or a stoker type or other boiler having a coal delivery system, a coal crusher, coal storage bins, lock hoppers, a gasifier vessel of two stages, liquid and solid separator vessels, heat and steam recovery vessels, equipment to control the flow of steam and air to the gasifier so as to maintain fuel quality, and a gas clean up plant that will remove environmentally unacceptable components of the gas such as hydrogen sulphide and other sulphur containing compounds and tars and light oils.

US Patent:

20060123706, Jun 15, 2006

Filed:

Dec 9, 2005

Appl. No.:

11/299061

Inventors:

David Wakefield - Houston TX, US
Robert Jackson - Houston TX, US

Assignee:

Econo-Power International Corporation - Houston TX

International Classification:

C10J 3/00

US Classification:

048210000

Abstract:

A fuel preparation apparatus in which coal or coal and other carbon containing material is converted to an environmentally acceptable fuel gas by the reaction with air and steam at a pressure of from 20 to 90 pounds per square inch absolute suitable for providing fuel to a gas turbine, or a stoker type or other boiler having a coal delivery system, a coal crusher, coal storage bins, lock hoppers, a gasifier vessel of two stages, liquid and solid separator vessels, heat and steam recovery vessels, equipment to control the flow of steam and air to the gasifier so as to maintain fuel quality, and a gas clean up plant that will remove environmentally unacceptable components of the gas such as hydrogen sulphide and other sulphur containing compounds and tars and light oils.

US Patent:

20080302106, Dec 11, 2008

Filed:

Jun 7, 2007

Appl. No.:

11/759658

Inventors:

David W. Wakefield - Houston TX, US
Robert G. Jackson - Houston TX, US

Assignee:

ECONO-POWER INTERNATIONAL CORPORATION - HOUSTON TX

International Classification:

F02C 6/18

US Classification:

60781

Abstract:

A method of improving the output and efficiency of a pulverized coal plant by integration with an Integrated Gasification Combined Cycle (IGCC) plant.

US Patent:

20100050515, Mar 4, 2010

Filed:

May 13, 2009

Appl. No.:

12/465310

Inventors:

David W. Wakefield - Houston TX, US
Robert G. Jackson - Houston TX, US
Chen Lei - Taiyuan, CN

Assignee:

Econo-Power International Corp. - Houston TX

International Classification:

C10J 3/68
C10J 3/00
C10J 3/30

US Classification:

48 77, 48210, 48 86 R

Abstract:

An apparatus for the gasification of coal or other carbonaceous material is provided for operation at an elevated pressure of at least 30 psia, preferably, between 30 psia and 150 psia. Coal or other carbonaceous material passes downwards through two interconnected sections of a gasifier. In the upper section the coal is dried and partially devolatalized and so converted into a char before it passes into the lower section where it is converted, by reaction with steam and air, into ash and a gaseous mixture of carbon monoxide, hydrogen, carbon dioxide, methane, ethane, ethylene, hydrogen sulphide, carbonyl sulphide and small amounts of ammonia and phenols. The coal, ultimately converted to ash, exits the gasifier through a flanged semi-spherical containment section that has an integrated rotating grate, which collects and disposes of the ash and through which pass the air and steam used as reactants in the gasifier.

US Patent:

20110232088, Sep 29, 2011

Filed:

Jun 6, 2011

Appl. No.:

13/154201

Inventors:

David W. Wakefield - Houston TX, US
Robert G. Jackson - Houston TX, US

Assignee:

ECONO-POWER INTERNATIONAL CORPORATION - Houston TX

International Classification:

B23P 6/00

US Classification:

29888011

Abstract:

A method of improving the output and efficiency of a pulverized coal plant by integration with an integrated gasification combined cycle plant. Specifically, embodiments of the invention provide improvements in the performance of an existing coal steam turbine electrical generating plant by the addition of coal gasifiers, a gas turbine and a heat recovery steam generator.

US Patent:

20120285176, Nov 15, 2012

Filed:

Jul 26, 2012

Appl. No.:

13/559174

Inventors:

David W. Wakefield - Houston TX, US
Robert G. Jackson - Houston TX, US

Assignee:

ECONO-POWER INTERNATIONAL CORPORATION - Houston TX

International Classification:

F02C 3/28
F01K 23/10

US Classification:

60781, 60654

Abstract:

A method of improving the output and efficiency of a pulverized coal plant by integration with a gas turbine and a Heat Recovery Steam Generator. Specifically, embodiments of the invention provide improvements in the performance of an existing coal steam turbine electricity generating plant by the addition of coal gasifiers, a gas turbine and a heat recovery steam generator.