Alstom Technology Limited

Combustion Engineering, Inc.

General Electric Technology Gmbh

Alstom (switzerland) Ltd

Andritz Aktiebolag

Paul R Thibeault

Herbert E Andrus, Jr

Gregory N Liljedahl

Glen Jukkola

John H Chiu

Scott L Darling

Michael C Tanca

Carl R Bozzuto

Corinne Beal

Paul John Chapman

Andreas Brautsch

Mitchell B Cohen

Michal Tadeusz Bialkowski

Michel Vandycke

Michael S McCartney

Laurent Maghdissian

Paul J Chapman

Jr Herbert E Andrus

A chemical looping system that contains an oxidizer and a reducer is in fluid communication with a gas purification unit. The gas purification unit has at least one compressor, at least one dryer; and at least one distillation purification system; where the gas purification unit is operative to separate carbon dioxide from other contaminants present in the flue gas stream; and where the gas purification unit is operative to recycle the contaminants to the chemical looping system in the form of a vent gas that provides lift for reactants in the reducer.

Chemical looping integration with a carbon dioxide gas purification unit

A flow control grid includes a plurality of channel assemblies connected to one another. Each of the plurality of channel assemblies defines a flow straightening section and a flow turning section. The flow turning section has an arcuate segment and a first substantially flat segment. The first substantially flat segment is positioned in the flow straightening section. The arcuate segment extends outwardly from the flow straightening section.

Flow control grid

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

A recuperative and conductive heat transfer system ( &prime;) that is operative to effect therewith the heating within the second portion ( &prime;) of the heat transfer system ( &prime;) of a &ldquo;working fluid&rdquo; flowing through the heat s transfer surfaces ( &prime;) as a consequence of the transfer thereto by conduction of heat from a multiplicity of regenerative solids ( &prime;). The multiplicity of regenerative solids ( &prime;) derive their heat from a recuperation thereby within the first portion ( &prime;) of the heat transfer system ( &prime;) from either an internally generated or an externally generated source of heat ( &prime;).

Recuperative and conductive heat transfer system

A control system particularly suited for effecting control over an integrated gasification combined cycle system (IGCC) that includes at least a fuel feed system, a gasifier system, a product gas cleanup system, a booster compressor and a gas turbine. The subject control system includes a bleed air control valve, a booster compressor bypass control valve, a fuel feed control valve and a product gas shutoff valve. The bleed air control valve, which is connected in fluid flow relation between the gas turbine and the booster compressor of the IGCC, is operable for effecting control over the amount of air that is bled in the IGCC. The booster compressor bypass control valve, which is connected in fluid flow relation between the upstream side and the downstream side of the IGCC, is operable for effecting the bypass of air around the booster compressor of the IGCC. The fuel feed control valve, which is connected in fluid flow relation between the fuel feed system and the gasifier system of the IGCC, is operable for effecting control over the amount of fuel that is fed from the fuel feed system of the IGCC. The product gas shutoff valve, which is connected in fluid flow relation between the product gas cleanup system and the gas turbine of the IGCC, is operable for shutting off the flow of product gas to the gas turbine of the IGCC.

Control system for IGCC's

A pressurized coal gasification system having double wall containment vessels (2,10) is disclosed. The gasification vessel (2) is provided with a gas tight water seal (36) for connecting the lower end of the inner water-cooled vessel (4) with the bottom supported slag tank (32). The seal (36) prevents gas leakage between the vessel interior and the pressurized annular volume (24) formed between the inner and outer gasification chambers (4,6). A flow of clean, particulate-free product gas (60) is routed into the contiguous annular volume (24,26,28) formed between the inner water-cooled gas directing members (4,20,12) and the outer, pressure containing members (6,22,16) to prevent either leakage of raw product gas into the annular volume or dilution of the product gas (46) by leakage of the sealing gas (60) into the hot product gas flowstream.

Coal gasification system with product gas recycle to pressure

A gasifier (10) having an associated boiler (26, 32, 42, 48), for converting coal to combustible gas, and also having a desulfurizer (20) downstream of the gasifier. In order to maintain the gas leaving the gasifier and flowing to the desulfurizer above a predetermined temperature, even when operating the unit at reduced loads, a temperature sensing device (56) continuously monitors the gas temperature upstream of the desulfurizer. If the temperature drops below a predetermined value, high temperature boiler water (62) is introduced to the economizer (26) rather than feed water (24), so that less heat is absorbed by the economizer from the gases under these conditions.

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Windsor, CT, United States of America

Paul R Thibeault