Effect of working temperature on the resistance characteristic including the permeability coefficient and the pressure drop evolution of a pleated stainless steel woven filter with a nominal pore size of 0.5 μm has been studied.The permeability coefficient was obtained based on the pressure drop data and the Darcy's law.In three filtration experiments

pure carbon dioxide at 283 K

nitrogen at 85 K and liquid helium at 18 K are adopted

respectively.It is found that the permeability coefficient decreases at the working temperature due to the cold shrink of the filter element at cryogenic temperature.Then

two kinds of feed slurries

mixture of liquid nitrogen and solid carbon dioxide at 85 K

and mixture of liquid helium and solid nitrogen at 18 K

flow into the filter cell.The solid particles are deposited on the filter surface to form a filter cake and the purified liquid flows through the filter.It is found that the pressure drop evolution shows the same trend on these two temperatures

which can be divided into three stages with high filtration efficiency

indicating the feasibility of the filter for cryogenic application.However

variant cake resistances are obtained

which is resulted from the different interactions between solid particles in the feed slurry at lower working temperature.