Effects of sulfur species on solid deposition from heated jet fuel on different surfaces

摘要

Carbon deposition from heated jet fuel on metal surfaces is an important problem for the design of advanced aircraft (1).Metal surface composition can strongly affect the carbon deposition (2).The presence of sulfur compounds in jet fuels also appears to be important for carbon deposition.Typically,a commercial jet fuel may contain between 300 to 2000 ppm of sulfur,distributed into thiols,thiophenes,disulfides and polysulfides (3).The effect of the chemical nature of the sulfur compounds on the carbon deposition process is not clear.Tan and Baker (4),for example,reported that,over Fe-Ni particles,the carbon deposition from ethane/steam pyrolysis is inhibited by the presence of organic sulfides.On the other hand,in previous studies it was found that the carbon deposition rate could be increased in the presence of sulfides and how it is almost not affected by the presence of thiophenes (5).