The Babcock & Wilcox Company

Babcock & Wilcox Power Generation Group, Inc.

Douglas J DeVault

Dennis K McDonald

Thomas J Flynn

Luis G Velazquez-Vargas

William Downs

David L Kraft

Paul J Williams

Bartev B Sakadjian

Vladimir Vaysman

Hamid Farzan

Tritti Siengchum

A chemical-looping system utilizes oxygen-carrier particles to produce syngas from carbonaceous fuels. The system provides a circuitous flow path for the oxygen-carrier particles, which are used to partially oxidize the fuel to produce syngas. The circuitous flow path can proceed through a plurality of unit operations, including a reducer, a conversion reactor, an oxidizer, and a combustor. The conversion reactor is designed to partially oxidize carbonaceous fuel in co-current flow with the oxygen-carrier particles to produce syngas. In embodiments including an oxidizer, the oxidizer is designed to at partially re-oxidize the carrier particles, yielding hydrogen that can be mixed with partially oxidized products from the conversion reactor to adjust syngas quality. The combustor can be used to fully oxidize the carrier particles traveling in a closed loop. Reactions carried out in the combustor are highly exothermic and yield thermal energy that is absorbed by the carrier particles. The absorbed energy is used at other parts of the process, including the conversion reactor, to drive endothermic reactions. In this manner the system can be operated autothermally or nearly so. Methods of producing syngas are also disclosed.

Syngas production via cyclic reduction and oxidation of metal oxides

Processes, systems and equipment can be used to convert carbonaceous fuel to an output gas stream that includes CO as a primary C-containing product. In some embodiments, the processes and systems also can produce Hin a separate reaction, with the Hadvantageously being capable of being combined with the CO from a partial oxidation process to provide syngas which, in turn, can be used to produce fuels and chemicals. The processes and systems can be tuned so as to not produce significant amounts of COand do not require an air separation unit.

Chemical looping processes for partial oxidation of carbonaceous fuels

A method and system for dehumidifying flue gas from a flue gas-generating process that supplies the flue gas to a wet flue gas processor. A wet cooling tower supplies water to a wet flue gas processor to condense water from the flue gas and form a liquid mixture in the wet flue gas processor.

Integrated flue gas dehumidification and wet cooling tower system

A method and system for dehumidifying flue gas from a flue gas generating. Water is supplied from a cooling tower to a heat exchanger in the liquid in the lower end of a wet flue gas processor for cooling the liquid in the lower end of the wet flue gas processor to condense water from the flue gas into the liquid in the wet flue gas processor. Returning water from the heat exchanger to the cooling tower cools the water and the liquid with the condensed water is supplied from the wet flue gas processor to the cooling tower as make-up water for the cooling tower to reduce or eliminate the need for fresh make-up water.

The present invention is related to a system for removal of moisture and contaminants from recirculated flue gas. The system includes a spray tower for spraying the flue gas with a liquid reagent to remove contaminants from the flue gas. A heat exchanger, integrally connected to the spray tower, cools the liquid reagent before the reagent is sprayed onto the flue gas stream. Cooled liquid reagent improves the condensation of the water vapor in the flue gas during the spraying process and provides a lower moisture content flue gas exiting the system. Combustion process efficiency improves as flue gas redirected to the burner for combustion contains.

Process for controlling the moisture concentration of a combustion flue gas

A pressure measurement tap for use in a pressurized fluidized bed for preventing a flow of particulate matter into the measurement tap opening. The pressure measurement tap has an inner pipe for providing purge air through the pressure measurement tap which carries the purge air past a pressure gauge conduit and provides for greater accuracy in measurements. A second embodiment has a constant source of purge air provided to the inner pipe.

Pressure measurement tap for a pressurized fluidized bed

A power plant utilizing combined mode steam and gas turbines runs a refrigeration cycle powered by the energy in the rejected heat from the steam turbines and/or other waste heat source to cool the ambient inlet air to the gas turbines to have them operate more efficiently.

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Rootstown, OH, United States of America

Douglas J DeVault