Home    Solutions    Advancements in R-Gas entrained flow coal gasification

Advancing R-GAS™ entrained flow coal gasification at demonstration plant in China

GTI is maturing an innovative and compact gasification technology for coal conversion to liquid fuels and chemicals and power generation. This game-changing technology, leveraging decades of investment from both U.S. aerospace and energy sectors, was developed from concept to pilot-scale by Aerojet Rocketdyne and is now owned by GTI. GTI has branded this gasification technology as the R-GAS™ process.

Scaling-up the R-GAS™ technology requires a large-scale demonstration plant to validate long-duration reliability, operability, and capital costs. In June 2017, GTI and Yangquan Coal Industry Group signed an agreement to jointly develop an Industrial Demonstration Project for R-GAS at the largest coal-to-chemicals plant in Shanxi Province, China.

The R-GAS™ technology has been successfully operated at pilot-scale (18 tons per day) on sub-bituminous coal, bituminous coal, high ash fusion temperature anthracite coal, and petroleum coke—all with excellent test results. This testing has been conducted at GTI’s pilot-scale facility located on an 18-acre campus right outside of Chicago, IL with more than 1,300 hours of hot fire testing achieved since commission of the pilot plant in December 2009. The most recent long-duration testing was completed in December 2016 with a very high ash fusion temperature anthracite coal, which is predominant in China. This series of tests validated the robustness of the R-GAS™ process, demonstrating the capability to achieve >99% carbon conversion even with this low rank coal.

The demonstration plant will validate long-duration reliability, operability, and capital costs. Commercial versions of the new gasifier will be about one-tenth the size of competing entrained flow technologies, and the compact size and advanced design features drive higher efficiency and lower cost. Capital expenditures are estimated to be 15-25% lower than the most economical entrained flow technology.​​​​​​

​The design enables rapid start-up and shut-down, feedstock flexibility—able to operate with all ranks of coal—and process optimization capability. R-GAS™ also consumes up to 30% less water and the higher efficiency results in lower overall emissions. Cost for electricity generation, chemicals, and liquid fuels production are estimated to be 15% to 25% lower compared with existing technologies.

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

​​​​​​​​​​​​​​