Project No: FE0005339
Performer: Georgia Tech Research Corporation


Contacts

Jenny Tennant
Coal and Coal/Biomass to Liquids Technology Manager
National Energy Technology Laboratory
3610 Collins Ferry Road
P.O. Box 880
Morgantown, WV 26507-0880
304-285-4803
jenny.tennant@netl.doe.gov

Steven Markovich
Project Manager
National Energy Technology Laboratory
626 Cochrans Mill Road
P.O. Box 10940
Pittsburgh, PA 15236-0940
412-386-7537
steven.markovich@netl.doe.gov

Pradeep Agrawal
Principal Investigator
Georgia Tech Research Corporation 
School of Chemical &
Biomolecular Engineering
311 Ferst Drive, N.W.
Atlanta, GA 30332-0100
404-894-2826
pradeep.agrawal@chbe.gatech.edu

Duration
Award Date:  10/01/2010
Project Date:  03/31/2015

Cost
DOE Share: $1,101,814.00
Performer Share: $463,585.00
Total Award Value: $1,565,399.00

Performer website: Georgia Tech Research Corporation - http://www.chbe.gatech.edu

Advanced Energy Systems - Coal and Coal/Biomass to Liquids

Development of Kinetics and Mathematical Models for High Pressure Gasification of Lignite-Switchgrass Blends

Project Description

The objectives of the proposed study are to obtain experimental reactor data and develop kinetic rate expressions for pyrolysis and char gasification for the coal-biomass blends under conditions free from transport limitations, to develop a detailed understanding of the effect of pyrolysis conditions on the porous char structure, to build mathematical models that combine true kinetic rate expressions with transport models for predicting gasification behavior for a broad range of pressures and temperatures, and to investigate the physical and chemical parameters that might lead to synergistic effects in coal-biomass blends gasification.

 


Schematic and photo of the Pressurized Entrained Flow Reactor (PEFR) at Georgia Tech.

Schematic and photo of the Pressurized Entrained Flow Reactor (PEFR) at Georgia Tech.


Program Background and Project Benefits

The Department of Energy (DOE) is committed to supporting research focused on making use of the nation's coal and biomass resources. The Coal and Coal Biomass to Liquids (C&CBTL) Technology Program at DOE's National Energy Technology Laboratory (NETL) is developing advanced technologies to remove technical barriers that will foster the commercial adoption of coal and coal/biomass gasification technologies for the production of affordable hydrogen and liquid fuels (such as gasoline, diesel, aviation, and military fuels). The hydrogen can be used in advanced systems for efficient power generation produced with near-zero emissions and with the potential to significantly reduce greenhouse gas emissions. The synthesis gas (syngas) produced by the gasification of coal and coal/biomass mixtures can be converted by chemical processes to generate clean liquid hydrocarbon fuels. To successfully complete the development of C&CBTL technologies from the present state to the point of commercial readiness, the C&CBTL Program efforts are focused on two Key Technologies: (1) Coal/Biomass Feed and Gasification, and (2) Advanced Fuels Synthesis.

The Coal/Biomass Feed and Gasification Key Technology is advancing scientific knowledge of the production of liquid hydrocarbon fuels from coal and/or coal-biomass mixtures. Activities support research for handling and processing of coal/biomass mixtures, ensuring those mixtures are compatible with feed delivery systems, identifying potential impacts on downstream components, catalyst and reactor optimization, and characterizing the range of products and product quality.

This Georgia Tech Research Corporation project will use an experimental reactor to produce data and develop kinetic rate expressions for pyrolysis and char gasification for coal-biomass blends.  The impact of this project will be to develop a cost-effective gasification-based CBTL process to produce renewable liquid fuels that will provide diversity of fuel supply and energy security while resulting in lower future capital and operating costs. Specifically, this project will evaluate the effect of pyrolysis conditions on the porous char structure to build mathematical models that combine true kinetic rate expressions with transport models for predicting gasification behavior for a broad range of pressures and temperatures, and to investigate the physical and chemical parameters that might lead to synergistic effects in coal-biomass blends gasification.