Apparatus for continuously pulping cellulose matter

Claim 1

APPARATUS FOR PULPING CELLULOSIC MATERIAL COMPRISING A MIXING TANK; MEANS FOR INTRODUCING CELLULOSIC MATERIAL INTO SAID MIXING TANK; MEANS FOR INTRODUCING LIQUOR INTO SAID MIXING TANK TO FORM A MATERIAL-LIQUOR SUSPENSION; A DEGASSER INCLUDING SEPARATOR VERTICALLY POSITIONED THEREIN, SAID SEPARATOR BEING FORMED WITH A BASIN IN THE LOWER PORTION THEREOF AND HAVING A PERFORATED INNER WALL TO ENABLE LIQUOR TO DRAIN FROM SAID SUSPENSION AND TO PASS INTO SAID BASIN; MEANS TO SEQUENTIALLY STEAM AND VENT THE DEGASSER TO DEGAS SAID MATERIAL; A SECOND MIXING TANK; MEANS TO INTRODUCE SAID DEGASSED MATERIAL INTO SAID SECOND MIXING TANK, MEANS FOR MAINTAINING A PRESSURE BALANCE BETWEEN SAID DEGASSER AND SECOND MIXING TANK; MEANS TO INTRODUCE A DELIGNIFYING LIQUOR INTO SAID SECOND MIXING TANK TO FORM A SUSPENSION OF THE DEGASSED MATERIAL AND LIQUOR; AN IMPREGNATOR; MEANS FOR PASSING SAID SUSPENSION OF DEGASSED MATERIAL AND LIQUOR THROUGH SAID IMPREGNATOR WHEREIN SAID MATERIAL IS IMPREGNATED WITH LIQUOR; A DIGESTER TO DELIGNIFY THE IMPREGNATED MATERIAL IN NON-SUB MERGENCE IN AN ATMOSPHERE OF STEAM; AND MEANS FOR PASSING SAID IMPREGNATED MATERIAL TO SAID DIGESTER.