James E Harper

US Patent:

47041358, Nov 3, 1987

Filed:

Dec 9, 1985

Appl. No.:

6/806398

Inventors:

Jack I. Bonasso - Carolina WV
James T. Harper - Chamblee GA
Ewing A. Johnson - Fairmont WV

International Classification:

C10J 358

US Classification:

48 73

Abstract:

An apparatus is provided for converting coal to gas, liquid and solid products. The coal is subjected to a pyrolysis reaction at a temperature of at least about 260. degree. C. in the presence of a hydrogen-containing gas, and the resultant solid residue subjected to a gasification reaction with oxygen and steam at a temperature of at least about 482. degree. C. thereby generating the necessary hydrogen-containing gas for the pyrolysis reaction and producing a solid product. Heat generated in the exothermic gasification reaction is transferred to the pyrolysis reaction, so the apparatus does not require any external source of heat except for means (88) to control the temperature of the gases passing to the pyrolysis reaction chamber. The gaseous fraction generated in the pyrolysis reaction is cooled to produce liquid and gas products, preferably after having first been subjected to a Fischer-Tropsch reaction.

US Patent:

45712492, Feb 18, 1986

Filed:

Aug 15, 1983

Appl. No.:

6/523272

Inventors:

Jack I. Bonasso - Carolina WV
James T. Harper - College Park GA
Francis K. Verhoff - Morgantown WV

International Classification:

C10J 358

US Classification:

48 73

Abstract:

An apparatus is provided for converting coal to gas, liquid and solid products, which comprises a single vessel including a pyrolysis chamber (20) disposed in the upper part of the vessel, and a gasification chamber (29) disposed beneath the pyrolysis chamber in the lower part of the vessel. The coal is subjected to a pyrolysis reaction at a temperature of at least about 260. degree. C. in the presence of a hydrogen-containing gas, and the resultant solid residue subjected to a gasification reaction with oxygen and steam at a temperature of at least about 482. degree. C. thereby generating the necessary hydrogen-containing gas for the pyrolysis reaction and producing a solid product. Heat generated during the exothermic gasification reaction is also transferred from the gasification chamber to the pyrolysis chamber for the endothermic reaction therein by conduction through a common dividing wall (74) interconnecting the two chambers. The gaseous fraction generated in the pyrolysis reaction is cooled to produce liquid and gas products, preferably after having first been subjected to a Fischer-Tropsch reaction.

US Patent:

20170058769, Mar 2, 2017

Filed:

Aug 16, 2016

Appl. No.:

15/237676

Inventors:

- Schenectady NY, US
Michael Anthony Cocca - Atlanta GA, US
James Harper - Greenville SC, US

International Classification:

F02C 3/30

Abstract:

A system for operating a combustor in a non-Premix mode of operation includes a combustor comprising a plurality of primary fuel nozzles annularly arranged around a center fuel nozzle, a fuel supply system that is fluidly coupled to the plurality of primary fuel nozzles and the center fuel nozzle, a steam injection system that is fluidly coupled to the fuel supply system and to at least one of the plurality of primary fuel nozzles or the center fuel nozzle and a controller. The controller is electronically coupled to the fuel supply system and the steam injection system. The controller is programmed to initiate the steam injection system to inject a flow of superheated steam into a flow of fuel from the fuel supply system upstream from at least one of the plurality of primary fuel nozzles or the center fuel nozzle during a non-Premix mode of operation of the combustor.

US Patent:

20170058770, Mar 2, 2017

Filed:

Aug 16, 2016

Appl. No.:

15/237694

Inventors:

- Schenectady NY, US
Michael Anthony Cocca - Atlanta GA, US
Joseph Phillip Klosinski - Atlanta GA, US
James Harper - Greenville SC, US

International Classification:

F02C 6/18
F01N 5/02
H02K 7/18
F02C 3/13
F02C 3/34
F01N 3/10
F01K 11/02

Abstract:

A system for decoupling steam production dependency from gas turbine load includes a gas turbine having an inlet system, a compressor, a combustor and a turbine. The combustor includes a plurality of axially staged fuel injectors positioned downstream from a plurality of primary fuel nozzles and a center fuel nozzle. The gas turbine further includes at least one bleed air extraction port that is in fluid communication with at least one of the compressor, a compressor discharge casing or the combustor. The system also includes a diluent injection system that is in fluid communication with the combustor and an exhaust section that is disposed downstream from the turbine. The exhaust section includes an oxidation catalyst system and a heat recovery steam generator.

US Patent:

20170058784, Mar 2, 2017

Filed:

Aug 16, 2016

Appl. No.:

15/237726

Inventors:

- Schenectady NY, US
Michael Anthony Cocca - Atlanta GA, US
Joseph Phillip Klosinski - Atlanta GA, US
Mihir Kumar Lal - Greer SC, US
James Harper - Greenville SC, US

International Classification:

F02C 9/18
F02C 7/228
F23R 3/34
F01D 25/30
F01N 3/10
F04D 29/32
F04D 29/54
F01D 5/02
F02C 3/04
F02C 3/30

Abstract:

A system and related method for maintaining emissions compliance while operating a gas turbine in turndown mode are disclosed herein. The system includes a gas turbine including a compressor, a combustor, a turbine and an exhaust section. The combustor comprises a plurality of axially staged fuel injectors positioned downstream from a plurality of primary fuel nozzles and a center fuel nozzle. The gas turbine further comprises a bleed air extraction port that is in fluid communication with at least one of the compressor, a compressor discharge casing or the combustor. The system further includes a controller programmed to bleed compressed air from the bleed air extraction port and to energize the plurality of axially staged fuel injectors during turndown operation of the gas turbine.