System and apparatus for recovery of turpentine from thermomecha

Details System and apparatus for recovery of turpentine from thermomecha System and apparatus for recovery of turpentine from thermomecha

1990-02-26

1990-10-16

Chin, Peter

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Including recovery of organic by-product

162 23, 162 46, 162 47, 162 55, 162 56, 162239, 162251, 162261, D21C 1106

Patent

active

049632272

ABSTRACT:
There has been provided a system and apparatus for recovering turpentine from a thermomechanical pulping process for making paper, which thermomechanical pulping process utilizes a plug screw conveyor for squeezing and feeding pulp chips. The thermomechanical pulping process is conventional. The liquid effluent from said plug screw conveyor contains an appreciable amount of turpentine. The liquid effluent is collected under superatmospheric pressure and flashed into vapor/liquid separator by releasing the pressure on the liquid. This vapor is condensed in a suitable condenser and the condensate collected in a decanter where the turpentine collects as a separate phase and the water also as a separate phase. Condensate from various vents in the conventional thermomechanical pulping process may be collected for more nearly compelete removal of turpentine and other oleoresinous components.

REFERENCES:
patent: 4925527 (1990-05-01), Ryham

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