CCS AND POWER SYSTEMS
ADVANCED ENERGY SYSTEMS - GASIFICATION SYSTEMS
LOW RANK COAL OPTIMIZATION
Performer: NETL Office of Research and Development
Project No: FWP-2012.03.03 Task 4
Project Scope and Technology Readiness Level
The work described is part of an overall project in advanced gasification. It comprises several subtasks aimed at provision of model validation data and general multiphase model development. Researchers will conduct statistically designed experiments on gas-solids jets located on the side-wall of NETL’s large-scale circulating fluidized bed to mimic the flow of coal into an industrial-scale transport unit. Smaller-scale, well controlled, and highly instrumented laboratory experiments will also be conducted to test model expressions for gas-solids jets on drag, coefficients of restitution and friction, and polydispersity. While objective statistical methods are routinely available to characterize the uncertainty in experimental data, the bulk of the effort will be to develop a framework that enables quantification of uncertainty associated with CFD characterization of a TRIG unit for co-feeding applications. NETL’s open-source suite of multiphase solvers including Multiphase Flow with Interphase Exchanges-discrete element method (MFIX-DEM), MFIX-continuum, Hybrid MFIX, MFIX-PIC (particle-in-cell) will be coupled with the Problem Solving environment for Uncertainty Analysis and Design Exploration uncertainty qualification (PSUADE UQ) package in order to establish confidence levels associated with each CFD simulation by each CFD solver for TRIG co-feed applications.
Researchers will develop kinetic sub-models for devolatilization, secondary tar cracking, and char gasification and continue to develop algorithms to extract the model data from commercial software codes and implement them through the graphical user interface that forms the basis of the Carbonaceous Chemistry for Computational Modeling module (C3M). C3M will also be updated from an experimental program which will identify key parameters affecting soot formation, identify the mechanism of soot formation, and investigate the influence of pressure on the steam reforming mechanism. The team will generate detailed kinetic and product distribution data on the pyrolysis and gasification of low-rank fuels used in the TRIG unit at the National Carbon Capture Center (NCCC).
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".