Method and system for direct contact of hot liquor with wood...

Details Method and system for direct contact of hot liquor with wood... Method and system for direct contact of hot liquor with wood...

D - Textiles, Paper

21

C

D21C 1/00 (2006.01) D21C 7/06 (2006.01)

Patent

CA 2599773

A method for heating a chip slurry in a pulping system including an impregnation vessel and a chemical digesting vessel, the method including: impregnating chips in the impregnation vessel with a liquor; transporting the chips from the impregnation vessel to an upper elevation of the digester vessel; extracting liquor from a lower elevation of the digester vessel, wherein the extracted liquor has a temperature substantially higher than a temperature of the chips being transported to the upper elevation of the digester vessel, and adding extracted liquor from the lower elevation of the digester vessel to the chips being transported from the impregnation vessel to the digester vessel.

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