To easily recover high-purity pulp from a raw liquid at low cost, in a method for separating and recovering the pulp from the raw liquid after removing vinyl from a mixed liquid mixture obtained by cutting or crushing a used disposable diaper using pulp, water-absorbing polymers, and vinyl as material, and adding and mixing a separating agent making water absorbed by the water-absorbing polymers be discharged and water fluidizing the cut or crushed used disposal diaper.
After the pulp and the water-absorbing polymers contained in the raw liquid are adjusted to a concentration of solid content 1.5 wt.% or below, the raw liquid is force-fed from a lateral direction such that a vortex flow occurs in an inflow port 1b of an upper side face of a circular cone 1a of a cyclone type centrifugal separator 1, the water-absorbing polymers having discharged water by the centrifugal force of the vortex flow are discharged from a lower discharge port 1c while swirling them downward along the conical inner wall, a pulp solution wherein the water and the pulp are mixed is discharged from an elbow pipe 1e connected to an upper discharge port 1d while making it ascend in a central part of the circular cone 1a, and the pulp is recovered.
TAJIMA TAKAKI
YAMADA YOZO
| JP2012170918A | 2012-09-10 | |||
| JP2002273260A | 2002-09-24 | |||
| JP2003039023A | 2003-02-12 | |||
| JP2001310178A | 2001-11-06 | |||
| JPS5047254A | 1975-04-26 | |||
| JPH01176465A | 1989-07-12 |
| US3959150A | 1976-05-25 |
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