CCS and Power Systems

Advanced Energy Systems - Coal and Coal/Biomass to Liquids

Investigation of Coal-Biomass Catalytic Gasification Using Experiments, Reaction Kinetics and Computational Fluid Dynamics

Performer: Virginia Polytechnic Institute and State University

Project No: FE0005476

Project Scope and Technology Readiness Level

Gasification experiments will be conducted in bench-scale (2-inch diameter) and pilot-scale (4-inch diameter) fluidized bed reactors under a range of temperatures and atmospheric pressure. Several acidic catalysts, including nickel, will be used catalysis?ed gasification temperatures a byproduct of the n temperatures?to lower gasification temperatures during the pyrolysis reaction. Slag formation also will be examined. Researchers will analyze the composition of the fuels, which will guide the development of the detailed reaction kinetics models. The molecular kinetic modeling will be used to identify the important reaction pathways and convert the molecules to a set of attributes that provide the molecular detail needed to convert those attributes into a set of equations describing the chemical reaction occurring in the system. A reaction module will be coupled with CHEMKIN, a software tool for solving complex chemical kinetics problems, and built using the equations that describe the co-gasification process. Decoupling the transport and chemical source terms using a fractional step approach will provide an efficient method for solving the complex chemistry. Finally, MFIX will be coupled with an efficient reaction module to provide an excellent computational fluid dynamics tool for analyzing co-gasification, providing valuable information related to fluidization characteristics (including mixing and segregation), and supporting gasifier design.

The Technology Readiness Level (TRL) assessment identifies the current state of readiness of the key technologies being developed under the DOE’s Clean Coal Research Program. In FY 12, this project was assessed a TRL of 3.

The TRL assessment process and its results including definition and description of the levels may be found in the "2012 Technology Readiness Assessment-Analysis of Active Research Portfolio".

Project Details