The Babcock & Wilcox Company

Babcock & Wilcox Power Generation Group, Inc.

Luis G Velazquez-Vargas

Thomas J Flynn

Douglas J DeVault

Bartev B Sakadjian

Mikhail Maryamchik

David L Kraft

Lei Ji

S Behrooz Ghorishi

Albert J Bennett

Jeremy L Remus

Shengteng Hu

Donald C Housley

Tritti Siengchum

Hua Song

Robert T Cunningham

Jinhua Bao

Thomas Flynn

Douglas Devault

Douglas J Devault

The present invention relates generally to an apparatus for housing a chemical looping process comprising of at least one fluidized-bed combustor reactor, at least one entrained riser, at least one particle separator, optionally at least one particle holding reactor, at least one moving-bed reactor, at least one standpipe, at least one L-valve system for solid flow control and interconnecting sections.

Apparatus for enclosing a chemical looping process

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 power plant includes a solar receiver heating solid particles, a standpipe receiving solid particles from the solar receiver, a pressurized heat exchanger heating working fluid by heat transfer through direct contact with heated solid particles flowing out of the bottom of the standpipe, and a flow path for solid particles from the bottom of the standpipe into the pressurized heat exchanger that is sealed by a pressure P produced at the bottom of the standpipe by a column of heated solid particles of height H. The flow path may include a silo or surge tank comprising a pressure vessel connected to the bottom of the standpipe, and a non-mechanical valve. The power plant may further include a turbine driven by heated working fluid discharged from the pressurized heat exchanger, and a compressor driven by the turbine.

Power generation plant integrating concentrated solar power receiver and pressurized heat exchanger

A method for capturing gaseous elemental mercury in a flue gas wherein a soluble mercury oxidizer is utilized to oxidize gaseous elemental mercury at a gas-liquid interface of a wet scrubber, and oxidized mercury product is removed prior to re-emission.

Redox method for capture of total gaseous mercury by wet FGD

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Copley, OH, United States of America

Luis G Velazquez-Vargas