Andrew E Seltzer368 Meetinghouse Ln, Media, PA 19063

7874140, Jan 25, 2011

Jun 8, 2007

11/760280

Zhen Fan - Parsippany NJ, US
Andrew Seltzer - Livingston NJ, US
Horst Hack - Lebanon NJ, US

Foster Wheeler North America Corp. - Clinton NJ

F02C 7/10
F02G 1/00

60 39511, 60 3952, 122 7 R, 110233

A method of and a power plant for generating power by combusting carbonaceous fuel with substantially pure oxygen, and a method of modifying a process of generating power by combusting carbonaceous fuel from combusting the fuel with air to combusting the fuel with substantially pure oxygen. The methods include feeding substantially pure oxygen into a furnace for combusting fuel with the oxygen to produce exhaust gas including mainly carbon dioxide and water, recovering low-grade heat from the exhaust gas by using multiple exhaust gas coolers arranged in a downstream portion of the exhaust gas channel, wherein a first portion of the recovered low-grade heat is used for preheating feedwater; pressurizing a first portion of the exhaust gas in multiple exhaust gas compressors so as to produce liquid carbon dioxide, recycling a second portion of the exhaust gas to the furnace via an exhaust gas recycling channel, using a first portion of steam extracted from a steam turbine system to preheat feedwater, wherein the first portion of the recovered low-grade heat is more than 50% of the total amount of recovered low-grade heat, or larger than the first portion of the recovered low-grade heat in the air-fired process, allowing minimizing of the first portion of the extracted steam, and the expanding of a second portion of the extracted steam in at least one auxiliary steam turbine for driving at least one compressor or at least one pump of the power plant.

7927568, Apr 19, 2011

Oct 26, 2006

11/586690

Zhen Fan - Parsippany NJ, US
Andrew Seltzer - Livingston NJ, US

Foster Wheeler Energy Corporation - Clinton NJ

B01D 53/14
F02K 7/02

423220, 60649

A method of and an apparatus for capturing COfrom flue gas emanating from a carbonaceous fuel combusting power plant, which includes a source of oxygen and a combustion chamber for combusting the fuel with oxygen and thereby producing flue gas that includes CO, water and excess oxygen as its main components. At least a portion of the flue gas is compressed to a pressure higher than about sixty bar, the compressed flue gas is cooled in a primary COseparating unit for capturing a first portion of the COby condensing it to produce a liquid COstream and a high pressure vent gas stream that includes oxygen and excess CO, the liquid COstream is discharged from the power plant, and the high pressure vent gas stream is conducted to a secondary COseparating unit for capturing a second portion of the COby adsorbing it to an adsorbing material.

7946843, May 24, 2011

Jul 20, 2007

11/780623

Zhen Fan - Parsippany NJ, US
Horst Hack - Lebanon NJ, US
Andrew Seltzer - Livingston NJ, US
Archibald Robertson - Whitehouse Station NJ, US

Foster Wheeler North America Corp. - Clinton NJ

F23B 10/00

431 2, 60776, 60 3901, 60772, 252373

A method of and a plant for combusting carbonaceous fuel, the method including the steps of introducing particulate oxygen selective sorbent, such as a perovskite type material, into an adsorption reactor of the combustion plant to form a first particle bed in the adsorption reactor, fluidizing the first particle bed by an oxygen-containing first fluidizing gas to adsorb oxygen from the fluidizing gas to the sorbent, conveying oxygen-rich sorbent from the adsorption reactor to a combustion reactor of the combustion plant to form a second particle bed in the combustion reactor, fluidizing the second particle bed by an oxygen-deficient second fluidizing gas to desorb oxygen from the sorbent, so as to produce free oxygen gas, and introducing carbonaceous fuel into the combustion reactor to oxidize the fuel with the free oxygen gas.

8550810, Oct 8, 2013

May 28, 2010

12/789584

Andrew Seltzer - Livingston NJ, US
Zhen Fan - Parsippany NJ, US
Horst Hack - Hampton NJ, US

Foster Wheeler North America Corp. - Clinton NJ

F23N 1/02

431 12, 431 2, 110345

A method of controlling a boiler plant during a switchover period from an air-combustion mode to an oxygen-combustion mode. The method includes steps of feeding fuel into a furnace of the boiler plant at a rate determined by a fuel feeding scheme, feeding air into the furnace at a rate determined by a descending air feeding scheme, feeding substantially pure oxygen into the furnace at a rate determined by an ascending oxygen feeding scheme, and recirculating flue gas into the furnace at a rate determined by an ascending flue gas recirculating scheme. The fuel feeding scheme, the air feeding scheme and the oxygen feeding scheme are such that the fuel is combusted and the flue gas containing residual oxygen is produced. Also, the fuel feeding scheme, the air feeding scheme and the oxygen feeding scheme are such that the content of residual oxygen in the flue gas is, during at least a portion of the switchover period, greater than during any of the air-combustion mode and the oxygen-combustion mode. The method makes it possible to reduce COemissions and Oconsumption quickly during the short switchover period.

2009015, Jun 25, 2009

Dec 20, 2007

11/960958

Andrew Seltzer - Livingston NJ, US
Zhen Fan - Parsippany NJ, US
Horst Hack - Hampton NJ, US
Archibald Robertson - Whitehouse Station NJ, US

Foster Wheeler Energy Corporation - Clinton NJ

F23C 9/00

110345

A method of controlling a process of generating power in a power plant with a boiler by combusting carbonaceous fuel with substantially pure oxygen. At full load conditions, the method includes introducing a first carbonaceous fuel feed stream into a furnace, introducing a first substantially pure oxygen feed stream into the furnace for combusting the first carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a first recirculation flow rate to the furnace, to form, together with the first substantially pure oxygen feed stream, a first inlet gas stream having a predetermined average oxygen content, thereby discharging exhaust gas from the furnace at a first discharge flow rate. In second load conditions, corresponding to at most 90% load, the method includes introducing a second carbonaceous fuel feed stream into the furnace, introducing a second substantially pure oxygen feed stream into the furnace for combusting the second carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a second recirculation flow rate to the furnace, to form, together with the second substantially pure oxygen feed stream, a second inlet gas stream, so as to discharge exhaust gas from the furnace at a second discharge flow rate, and controlling the second recirculation flow rate to be from the first recirculation flow rate to a value providing the second discharge flow rate to be substantially as high as the first discharge flow rate.

2011009, Apr 28, 2011

Oct 22, 2009

12/603869

Zhen Fan - Parsippany NJ, US
Horst Hack - Hampton NJ, US
Andrew Seltzer - Livingston NJ, US

FOSTER WHEELER ENERGY CORPORATION - Clinton NJ

F01K 7/22
F01K 13/02
F01K 11/02
F01K 19/00

60679, 60653, 60677, 60663

A method of increasing the power of a carbonaceous fuel combusting boiler system includes the steps of (a) feeding carbonaceous fuel into a furnace of the boiler system, (b) feeding oxidant gas into the furnace for combusting fuel to produce exhaust gas, (c) discharging the exhaust gas from the furnace via an exhaust gas channel, (d) conveying a stream of feedwater from a boiler economizer arranged in the exhaust gas channel to evaporating and superheating heat exchange surfaces arranged in the furnace and in the exhaust gas channel for converting the feedwater to superheated steam, (e) expanding the superheated steam in a high-pressure steam turbine for generating power, (f) extracting steam from the high-pressure steam turbine at a decreased rate for preheating the feedwater, (g) conveying steam from the high-pressure steam turbine at an increased rate to a reheater arranged in the exhaust gas channel for generating reheated steam, (h) expanding the reheated steam in an intermediate pressure steam turbine for generating power, and (i) conveying the exhaust gas in the exhaust gas channel from the reheater through a boiler economizer to a gas heater. The heat exchange surface area of at least one of the reheater and the boiler economizer is increased and/or a high pressure economizer is added downstream of the boiler economizer and upstream of the gas heater.

2011013, Jun 16, 2011

Dec 16, 2009

12/639395

Zhen Fan - Parsippany NJ, US
Andrew Seltzer - Livingston NJ, US
Horst Hack - Hampton NJ, US

FOSTER WHEELER ENERGY CORPORATION - Clinton NJ

F23B 80/02
F23C 9/00

110204

A method of combusting carbonaceous fuel in a combustion system. The combustion system includes a source of oxygen and a furnace. The method includes the steps of (a) feeding fuel and combustion gas including oxygen and recycling gas into the furnace for combusting the fuel with the oxygen and producing exhaust gas that includes CO, water and excess oxygen as its main components, (b) conducting the exhaust gas discharged from the furnace into a scrubber so as to remove pollutants from the exhaust gas, (c) dividing the exhaust gas into a first exhaust gas stream and a second exhaust gas stream, and conducting the second exhaust gas stream as a recycling gas stream into the furnace, (d) conducting the first exhaust gas stream into a COpurification and capturing unit (CPU) to produce one or more condensate streams, a purified liquid COstream and a vent gas stream that includes remaining CO, (e) discharging the purified liquid COstream from the combustion system, (f) conducting the vent gas stream into an adsorption unit so as to adsorb compounds, including remaining CO, from the vent gas stream to an adsorbing material and to produce a pass-through gas stream, and (g) regenerating the adsorbing material to produce a desorbed gas stream that includes at least a portion of the adsorbed compounds, and conducting at least a portion of the desorbed gas stream into the furnace.

2012018, Jul 26, 2012

Jan 20, 2011

13/010132

Zhen Fan - Parsippany NJ, US
Andrew Seltzer - Livingston NJ, US
Archibald Robertson, JR. - Whitehouse Station NJ, US
Horst Hack - Hampton NJ, US

FOSTER WHEELER NORTH AMERICA CORP. - Clinton NJ

B01D 53/48
B23P 6/00

42324301, 422168, 2940201

A method of desulfurizing flue gas in connection with oxy-combustion. A sulfur containing gas flow is introduced to a flue gas desulfurization arrangement having a spray tower at its top part and a reaction tank at its bottom part, in which the reaction tank contains liquid slurry having a surface level L. Sorbent-containing liquid slurry is sprayed to the sulfur containing gas flow. Sulfur-containing molecules are allowed to be absorbed into liquid slurry droplets. The liquid slurry droplets are allowed to enter the liquid slurry in the reaction tank. Oxygen containing gas is bubbled in the liquid slurry from a gas inlet header and nozzles in the reaction tank, in which the nozzles are arranged at a certain level in the reaction tank. Sulfur-containing particulates settle in the reaction tank. The sulfur-containing particulates are removed as a slurry from the reaction tank, and the bubbled gas that has left the liquid slurry is discharged separately from the flue gas from the flue gas desulfurization arrangement.