The invention discloses an energy-saving efficient resin-removing method and device for coarse lignite
wax. The resin-removing method comprises the following steps: smashing coarse lignite
wax and sieving the smashed coarse lignite
wax by a 0.5-3.0mm
sieve; then, leaching the sieved lignite wax particles and
acetone in a
solid-to-
liquid ratio of 1:1-1:8kg / L at constant temperature for 2-4 hours and separating to obtain a leaching liquid and a
solid; placing the
solid in a separating device, and heating, evaporating and removing residual
acetone to obtain degreased lignite wax; placing the leaching liquid in a separating container, adding water to separate resin from
acetone, and carrying out solid-liquid separation to obtain acetone insolubles and an acetone
aqueous solution; and recovering acetone by rectifying the acetone
aqueous solution; and evaporating the acetone insolubles to obtain walchowite. The
degreasing device comprises a
degreasing kettle, a ceride-removing desolventizing tank, a resin desolventizing separating tank, a rectifying device, an acetone
storage tank and a condenser. According to the energy-saving efficient resin-removing method and device disclosed by the invention, as resin in lignite wax is easy to dissolve in acetone at constant temperature, wax and asphaltos are not dissolved, and the resin content in wax is reduced by
digestion and separation at constant temperature, so that the device is simple and energy-saving and environment-friendly in process.