| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for adding heat to chips in a digester vessel, which reduces the energy requirements for in a pulping system. <P>SOLUTION: A method for heating a chip slurry in a pulping system having an impregnation vessel and a chemical digesting vessel, the method includes: impregnating chips in the impregnation vessel containing a liquor; transporting the chips from the impregnation vessel to an upper elevation of the digesting vessel; extracting liquor from the lower elevation of the digesting vessel, wherein the extracted liquor has a temperature substantially higher than a temperature of the chips in the impregnation vessel, adding the extracted liquor from the lower elevation of the digesting vessel to the chips to be or being transported from the impregnation vessel to the digesting vessel, and heating the chips being transported with heat energy in the extracted liquor. <P>COPYRIGHT: (C)2009,JPO&INPIT |
