Oil slurry filter, oil slurry filter unit and oil slurry filter system containing the same, and oil slurry filtering process

An oil slurry filter, which comprises at least one filter component of flexible texture, said filter component of flexible texture is formed from flexible filter material, said flexible filter material is made from at least one material selected from polypropylene, polyethylene, nylon, polyamide fiber, polyester fiber, polypropylene fiber, polyphenylene sulfide, polyimide, polytetrafluoroethylene, aramid fiber, polyurethane, glass fiber, and vinylon,

• wherein said flexible filter material has a basis weight of 300-1000 g/m2;
• a warp-direction breaking strength of 850 N/5 cm-9000 N/5 cm, a weft-direction breaking strength of 1000 N/5 cm-11000 N/5 cm;
• a thickness of 0.5-3.4 mm,
• wherein said flexible filter material at least includes a solid-removal layer and a base cloth layer;
• said solid-removal layer and said base cloth layer are provided adjacently, said solid-removal layer has a porosity of 85%-98%;
• said base cloth layer has a porosity of 30%-40%, the flexible filter material has a filtering precision of 0.1-25 micrometers;
• wherein the filter is an up-flow filter, said oil slurry filter includes an oil slurry inlet arranged at a lower part of the filter, a filtered oil outlet arranged at an upper part of the filter, a filter residue outlet arranged at the lower part and/or a bottom of the filter, and a purge medium inlet arranged at a top and/or the upper part of the filter.