Comprehensive pulping system for producing paper pulp

Claim 1

A PROCESS FOR DIGESTING CELLULOSIC MATERIAL COMPRISING VACUUM DEAERATING SAID MATERIL, SUBMEGING SAID MATERIAL IN LIQUOR FORMING A SLURRY OF PUMPABLE CONSISTENCY IMPREGNATING SAID MATERIAL BY SUBJECTING THE MATERIAL TO PROGRESSIVELY INCREASING HYDRAULIC PRESSURES, INTRODUCING THE IMPREGNATED MATERIAL INTO A DIGESTER, DIGESTING SAID IMPREGNATED MATERIAL TO PULP IN NON-SUBMERGENCE IN THE PRESENCE OF STEAM, DURING THE PULP WITHIN THE DIGESTER WITH ADITIONAL LIQUOR, TRANSFERRING THE DILUTED PULP TO A WASHER, WASHING THE DILUTED PULP IN AAID WASHER, REMOVING LIQUOR FROM THE DILUTED PULP SUBSTANTIALLY AT THE COOKING TEMPERATURE, INTRODUCING THE WASHED PULP AS A THIN STREAM INTO A BLOW TANK, CONDENSING THE STREAM WITH IN THE BLOW TANK B DIRECT CONTACT WITH COOLING WATER, PASSING THE STREAM CONDENSED AND COOLING WATER TO AN ACCUMULATOR TANK, VACUUM WASHING THE PULP REMOVED FROM SAID BLOW TANK, IN A VACUUM WASHER HAVING A WASH LIQUID SPRAYER,RETURNING LIQUOR FROM THE VACUUM WASHING STEP TO SAID BLOW TANK, AND INJECTING STREAM FROM SAID LIQUID SPRAYER OF THE VACUUM WASHER.