SIMPLE LIQUOR EXTRACTOR FOR CELLULOSE PULP BOILER AND USAGE THEREOF

PROBLEM TO BE SOLVED: To provide a scheme intended to improve a system for liquor extraction from a chopped cellulose pulp boiler and reduce both the number and extent of platforms mounted for having access to e.g. pipings so as to afford a more inexpensive boiler system. SOLUTION: A pulp treatment tank assembly has a substantially perpendicular tank with both top and bottom, a substantially annular 1st screen assembly 116 set up inside the tank, a substantially annular 1st header related to the 1st screen assembly 116, 1st and 2nd extractive conduits 124, 124' extending outside from the 1st header and communicating therewith in terms of fluid, and a barrier set up in the above header and also provided between the two conduits 124 and 124', wherein these two conduits 124, 124' are set up on the circumference about 2-30 deg. apart from each other.