A program is in progress to detect possible deposition and corrosion in combustion turbines that may use coal-derived liquid (CDL) fuels. Four tests in a turbine simulator (pressurized test passage) were made with CDL from the SRC-II process. The CDL was a pilot plant product with about a one-third heavy distillate fraction added to middle distillate to accelerate possible corrosion and deposition effects. At the temperature levels of current operating turbines (about 1366 K, 2000°F) there was no excessive deposition from the CDL fuels tested. Possible excessive deposition at high (1533 K, 2300°F) temperatures occurred but may be reduced significantly by use of CDL with low ash content.
Function of Hydrogenated Solvent in the Coal Liquefaction System. (II). The Influence of Heavy Distillate and Middle Distillate in the Coal Liquefaction Solvent.