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Technologies for low-cost coal conversion to high-hydrogen syngas
and jet fuel

GTI has performed long-duration gasification pilot-plant testing in support of a high-hydrogen syngas project with DOE. These technological advancements will reduce the cost of coal conversion to hydrogen or chemical-grade syngas by bringing down capital and operating expenditures, increasing efficiency, and reducing the cost to lower greenhouse gas emissions. Hybrid testing of coal with natural gas to produce higher hydrogen content for power, chemical-grade hydrogen, and liquid fuels is underway in June-July 2015.

The process uses the R-GAS gasifier co-fed with Wyoming Powder River Basin coal and natural gas to produce the syngas. For liquid fuels, the ratio of coal to natural gas could be set to reduce the need for two shift reactors to one, therefore minimizing the need to invest in additional downstream equipment. GTI completed an experimental project for DOE’s High-Hydrogen Syngas program for the process that used the R-GAS gasifier with coal and a partial oxidation reactor with natural gas to produce a high-hydrogen syngas. The process integrates these syngas generators with GTI’s SR2 process and a hybrid H2/CO2 membrane under development. An economic analysis shows 20-40% reduction in cost for having the two syngas reactors for power, hydrogen, and Fischer-Tropsch liquids production.

As part of an effort to develop advanced technologies for clean and efficient use of U.S. coal resources, DOE has selected RTI International to develop a breakthrough hybrid coal-to-liquid process technology to produce jet fuel. The project will be led by RTI, in partnership with GTI, and will address key issues that hinder the use of coal to produce jet fuel, including high capital costs associated with the conversion process.

RTI's hybrid coal-to-liquid process will be tested at GTI with coal-derived syngas, natural gas-derived syngas, and mixtures to produce syngas compositions needed for jet fuel production. By integrating these technologies, the hybrid coal-to-liquid process is anticipated to cost 25% to 30% less than conventional technologies. Pilot-scale testing of the hybrid process at GTI will begin in 2016.

Learn more about the R-GAS™ Gasification Technology. (2.7MB pdf)​​​​

Learn more about the SR2 Sulfur Removal and Recovery Process Technology. (1.8MB pdf)​​​​