Project No: FE0012500
Performer: Massachusetts Institute of Technology
Jenny Tennant Technology Manager Gasification Systems National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507-0880 (304) 285-4830 email@example.com Jason Hissam Project Manager National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880, MS P03D Morgantown, WV 26507-0880 (304) 285-0286 firstname.lastname@example.org Ahmed Ghoniem Principal Investigator Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139-4307 617-253-2295 email@example.com
DOE Share: $500,000.00
Performer Share: $239,509.00
Total Award Value: $739,509.00
Performer website: Massachusetts Institute of Technology - http://www.mit.edu/
This MIT project will develop and assess a slurry feeding system based on a suspension of coal in liquid CO2 that can be pumped into a high-pressure gasifier. The advantages of this solution are that CO2 has a low heat capacity, a low heat of vaporization and low viscosity. Thus, the liquid CO2 imposes a much smaller thermal load on the gasifier relative to a water slurry, and has the potential to improve the efficiency and economics of integrated gasification combined cycle (IGCC) power plants with carbon capture and dramatically reduce greenhouse gas emissions from coal fired power plants.
Integrated Gasification Combined Cycle with Coal CO2 Slurry Feeding System (click to enlarge)
Program Background and Project Benefits
The Massachusetts Institute of Technology project is developing and assessing a coal-CO2 slurry feeding system. As opposed to conventional coal-water slurry feeding, the coal-CO2 slurry feeding approach avoids the thermal efficiency loss incurred by addition of slurry water, particularly when feeding low-rank coals already high in moisture content, and allows high-pressure operation while avoiding the high capital cost and limited pressure range of dry coal feeding using lock-hopper technology. This new coal feeding method has the potential to improve the efficiency and economics of coal-based power generation with carbon capture and reduce the costs of converting coal to gasoline and diesel fuels.
Project Scope and Technology Readiness Level
This project will encompass two integrated threads of research. The first thread will develop a model of the phase inversion coal feeding process based on literature data and theory regarding the thermodynamic and rate processes. The second thread will examine how the CO2 slurry preparation and feeding system will impact the overall processes including the gasifier and downstream operations. Techno-economic evaluations of the integrated processes of the feeding system in the context of an IGCC process and the innovative Allam Cycle process for power generation will be performed.
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. This project has not been assessed. 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".