公开(公告)号：US07384501B2

公开(公告)日：2008-06-10

申请号：US10169209

申请日：2000-12-20

Applicant: Päivi Uusitalo ,  Mikael Svedman ,  Jukka Vaistomaa ,  Hannu Haaslahti

Inventor： Päivi Uusitalo ,  Mikael Svedman ,  Jukka Vaistomaa ,  Hannu Haaslahti

IPC: D21C11/00

CPC classification number: D21C11/0007 ,  D21C11/06

Abstract: A method for the preparation of pulp by means of alkaline cooking, in which method spent liquor is transferred to pressurized tanks, and at least one liquor is expanded corresponding to a temperature difference of 1 to 5° C. The generated steam is led to turpentine recovery. Thus, the removal of turpentine and gases dissolved in said liquor is effective, the amount of recovered turpentine increases, and pulp of better washability and higher quality is obtained.

Abstract translation: 一种通过碱性烹饪制备纸浆的方法，其中将废液转移到加压罐中，并且至少一种液体相应于1至5℃的温度差膨胀。产生的蒸汽被引到松节油 复苏。 因此，去除溶解在所述液体中的松节油和气体是有效的，回收的松节油的量增加，并且获得更好的洗涤性和更高质量的纸浆。