Effects of pressure on the coking characteristic of jet fuel RP-3

The influences of pressure on the surface coke deposition of RP-3 were studied by experiments. The flowing RP-3 is heated up to supercritical state in a 2 m long single-pass stainless steel tube (φ 2.2 × 0.2, 1Cr18Ni9Ti) with constant heat flux. The mass flow is 4g/s. The mount of surface coke deposition was obtained by weighting method. The influences of pressure on RP-3 surface coke deposition rate were investigated by changing the pressure. The result shows that the greater pressure can suppress coke deposition to a certain extent; the location of coking peak value tends to move backwards along the experimental segment; the shapes of surface coke deposition distribution curve under different pressure are the same.