Alstom Technology Limited

Combustion Engineering, Inc.

General Electric Technology Gmbh

John H Chiu

Bard C Teigen

Herbert E Andrus, Jr

Paul R Thibeault

Gregory N Liljedahl

Glen Jukkola

David K Anderson

Carl R Bozzuto

Corinne Beal

Andreas Brautsch

Michal Tadeusz Bialkowski

Michel Vandycke

George D Mylchreest

David Gordon Turek

Laurent Maghdissian

Michael J Hargrove

Steven F McNary

Nicole M Phyfe

Donald G Mylchreest

Stuart A Morrison

Mark A Douglas

Steve Y Wong

Jr Herbert E Andrus

A sealpot for a combustion power plant includes a downcomer standpipe which receives solids of the combustion power plant, a bed including a first end and a second opposite end, the first end connected to the downcomer standpipe, a discharge standpipe disposed at the second opposite end of the bed, and an orifice plate disposed between the bed and the discharge standpipe separating the discharge standpipe from the bed. The orifice plate includes apertures disposed at a height above the bed which allow transport of fluidized solids and gas through the orifice plate.

Sealpot and method for controlling a solids flow rate therethrough

In a method for operating a steam generator, a transport reactor is provided. Only a substantially pure oxygen feed stream is introduced into the transport reactor in an amount sufficient to maintain the transport reactor at or above a specific system load. The specific load is the system load when only the substantially pure oxygen feed stream is provided to the transport reactor at a minimum flow velocity for operating the transport reactor. A fuel is combusted in the presence of the substantially pure oxygen feed stream to produce a flue gas, which contains solid material. The solid material is separated from the flue gas and passed to a heat exchanger. The heat exchange may be one of a moving bed heat exchanger or a fluidized bed heat exchanger. The solid material is directed to the transport reactor to contribute to the combustion process.

Oxygen fired steam generator

A hot solids process selectively operable for purposes of generating at least one predetermined output based on what the specific nature of the primary purpose of the hot solids process is for which the at least one predetermined output that is selected from a multiplicity of predetermined outputs, such as H2 and CO2, is being produced, and wherein such primary purpose of the hot solids process is designed to be pre-selected from a group of primary purposes of the hot solids process that includes at least two of the generation of H2 for electric power purposes, the generation of SynGas for electric power production as well as for other industrial uses, the production of steam for electric power generation as well as for other uses, the production of process heat, the production of CO2 for agricultural purposes, and the generation of a feedstock such as H2 for use for the production of liquid hydrocarbons.

Hot solids process selectively operable based on its primary purpose

In a retrofit system for hot solids combustion and gasification, a chemical looping system includes an endothermic reducer reactorhaving at least one materials inletfor introducing carbonaceous fuel and CaCOtherein and a CaS/gas outlet. A first CaS inletand a first CaSOinletare also defined by the reducer reactor. An oxidizer reactoris provided and includes an air inlet, a CaSO/gas outlet, a second CaS inlet, and a second CaSOinlet. A first separatoris in fluid communication with the CaS/gas outletand includes a product gas and a CaS/gas outletandfrom which CaS is introduced into said first and second CaS inlets. A second separatoris in fluid communication with the CaSO/gas outletand has an outletfor discharging gas therefrom, and a CaSOoutlet from which CaSOis introduced into the first and second CaSOinlets. The chemical looping system is in fluid communication with at least a portion of an existing power generation system.

System for hot solids combustion and gasification

There is provided a circulating fluidized bed steam generator (CFB) having an improved structural support system and an improved combined hot solids-gas separator for separating gas and solids from a combined gas-solids stream. The combined hot solids-gas separator is in the form of a cyclone assembly having a plurality of wall portions forming a separation chamber and an inlet for passage of a combined gas-solids stream into the separation chamber. The lowermost extent of the inlet forms a threshold over which the combined gas-solids stream flows in entering the separation chamber. The separation chamber is operable to separate the combined gas-solids stream into a predominantly gas exit stream and a predominantly solids exit stream in a manner by which separated out solids to be discharged from the separation chamber via the predominantly solids exit stream are collected within the separation chamber at a location lower than the inlet. The cyclone assembly further includes a separated solids discharge for the discharge therethrough of the predominantly solids exit stream having the collected separated out solids therein and a gas outlet duct for outward flow of the predominantly gas exit stream out of the separation chamber.

Steam generator having an improved structural support system

A fluidized bed combustion system (10) particularly suited for use to effect the incineration, i.e., combustion, therewith of wood waste/sludge mixtures that have high moisture and ash content which makes them difficult to burn. The fluidized bed combustion system (10) includes a fluidized bed combustor (12) embodying a fluidized bed (24) composed of bed solids. Air is injected into the fluidized bed (24) through an air distributor (28) to establish a first controlled fluidizing velocity zone and a second controlled fluidizing velocity zone therewithin. Material (42b) is introduced into the fluidized bed combustor (12) above the second controlled fluidizing velocity zone. Bed solids are projected from the first controlled fluidizing velocity zone to the second controlled fluidizing velocity zone whereupon the bed solids rain down upon the material (42b) and effect a covering thereof. The material (42b) is then dried and thereafter combusted. Inerts/tramp materials/clinkers as well as large diameter solids entrained with the material (42b) are segregated therefrom and then are removed (14,200) from the fluidized bed combustor (12).

Internal circulation fluidized bed (ICFB) combustion system and method

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West Hartford, CT, United States of America

John H Chiu