The invention relates to the technical field of oil-containing
solid-liquid separation, and discloses a super-
wetting modified coalescence material and a
solid-liquid
separation method for
coupling multistage
cyclone-
polymerization filtration extraction by using the super-
wetting modified coalescence material. The super-
wetting modified coalescence material is prepared by taking a stainless steel
honeycomb plate as a base material, carrying out
degreasing and
rust removal pretreatment and loading a fluorosilane /
nano silicon dioxide composite modified layer, and has the advantages of outstanding hydrophobic and oleophylic characteristics, high
corrosion resistance and high oil drop coalescence efficiency. The
solid-liquid
separation method based on the material adopts the process of
raw material pretreatment, three-stage gradient
cyclone separation, super-wetting coalescence separation and product collection and detection, and efficient separation of oil-water-solid three phases in oil-based rock debris is realized through the synergistic effect of
cyclone centrifugal reinforcement and super-wetting surface coalescence. The method solves the problems of poor material
corrosion resistance, incomplete oil drop separation,
high energy consumption cost and the like in a traditional
separation method, the oil
recovery rate can reach 85% or above, and the method is suitable for large-scale treatment of oil-containing solid wastes such as oil-based rock debris in a
shale gas production area.