Chemical and heat recovery apparatus

Claim 1

APPARATUS FOR THE RECOVERY OF CHEMICALS AND HEAT FROM PULP RESIDUAL LIQUOR CONTAINING INORGANIC CHEMICAL AND COMBUSTIBLE ORGANIC MATTER COMPRISING UPRIGHT FLUID COOLED WALLS DEFININGG A VERTICALLY ELONGATED FURNACE CHAMBER AND HAVING A HEARTH AT THE BOTTOM AND A HEATING GAS OUTLET IN THE UPPER REAR PORTION THEREOF, A VAPORLIQUID DRUM POSITIONED ABOVE SAID FURNACE AND CONNECTED IN THE FLUID CIRCULATORY SYSTEM OF SAID FLUID COOLED WALLS, MEANS FOR INCINERATING SAID RESIDUAL LIQUOR IN THE LOWER PORTION OF SAID FURNACE CHAMBER FOR THE RECOVERY OF INORGANIC CHEMICALS AND THE PRODUCTION OF HOT COMBUSTION PRODUCTS, A PLURALITY OF LATERALLY SPACED ROWS OF FLUID COOLED TUBES FORMING PLATENS LYING IN UPRIGHT PLANES IN THE UPPER FORWARD PORTION OF SAID FURNACE, MEANS CONNECTING SAID PLATENS INTO THE FLUID CIRCULATORY SYSTEM WITH SAID DRUM, SOME OF THE FLUID COOLED TUBES OF SAID REAR WALL INCLINED FORWARDLY AND UPWARDLY IN SPACED RELATIONSHIP ACROSS SAID HEATING GAS OUTLET TO A POSITION ADJACENT THE REAR OF SAID PLATENS TO FORM A SCREEM ACROSS SAID OUTLET, AND AN INWARDLY TAPERING NOSE BAFFLE POSITIONED ABOVE SAID HEARTH SUBSTANTIALLY AT THE LEVEL OF THE LOWER PORTION OF SAID PLATENS FOR DIRECTING GAS FLOW INTO HEAT EXREAR OF SAID PLATENS FOR DIRECTING GAS FLOW INTO HEAT EXCHANGE CONTACT WITH SAID PLATENS, SAID BAFFLE HAVING AN UPPER SURFACE EXTENDING UPWARDLY AND REARWARDLY TO THE PLANE OF THE REAR WALL OF THE FURNACE TO FORM A SUBSTANTIALLY UNOBSTRUCTED SPACE IN THE REAR UPPER PORTION OF SAID FURNACE EXTENDING DOWNWARDLY FROM SAID SCREEN TO THE UPPER SURFACE OF SAID BAFFLE AND REARWARDLY BOUNDED BY THE REAR WALL OF SAID FURNACE AND FORWARDLY BY THE REARWARD EDGE OF SAID PLATENS FOR THE GRAVITATIONAL MOVEMENT OF SOLIDS DISLODGED FROM SAID SCREEN ONTO SAID BAFFLE AND THENCE INTO THE LOWER PORTION OF SAID FURNACE.