Method and apparatus for recovering chemical products from waste materials

Claim 1

THE METHOD OF PYROGENETICALLY TREATING A MIXTURE CONTAINING A COMBUSTIBLE MATERIAL AND A NON-COMBUSTIBLE MATERIAL LIKE WASTE BLACK LIQUOR FROM PULP DIGESTERS HAVING SLAG-FORMING PROPERTIES WHICH COMPRISES INTRODUCING THE MIXTURE INTO A COMBUSTION CHAMBER WITH AIR, DIRECTING SAID MIXTURE AND AIR TOWARD THE INTERIOR SUR FACE OF SAID CHAMBER AND COMPLETELY BURNING THE COMBUSTIBLE PART OF SAID MIXTURE PRIOR TO THE TIME IT REACHES SAID SURFACE WHEREBY THE HOT MOLTEN PRODUCTS RESULTING FROM THE COMBUSTION STRIKES THE INTERIOR SURFACE OF SAID CHAMBER FREED FROM SAID COMBUSTIBLE PART AND BY MEANS OF A MOVING LIQUID COOLANT, MAINTAINING SAID SURFACE AT A TEMPERATURE WHICH WILL CAUSE THE SLAG-FORMING PART OF THE HOT MOLTEN PRODUCTS RESULTING FROM THE COMBUSTION TO COALESCE AND SOLIDIFY ON SAID SURFACE TO FORM THEREON A LAYER OF REFRACTORY FREED FROM SAID COMBUSTIBLE PART AND, WHILE TRANSFERRING HEAT FROM SAID LAYER TO SAID MOVING COOLANT, MAINTAINING SAID LAYER OF REFRACTORY ON SAID SURFACE AS ADDITIONAL QUANTITIES OF SAID NON-COMBUSTIBLE HOT MOLTEN PRODUCTS COME IN CONTACT WITH SAID LAYER AND COALESCE THEREON.

Claim 2

THE METHOD OF PYROGENETICALLY TREATING A MIXTURE CONTAINING A COMBUSTIBLE MATERIAL AND A NON-COMBUSTIBLE MATERIAL LIKE WASTE BLACK LIQUOR FROM PULP DIGESTERS HAVING SLAG-FORMING PROPERTIES WHICH COMPRISES INTRODUCING THE MIXTURE INTO A COMBUSTION CHAMBER WITH AIR, DIRECTING SAID MIXTURE AND AIR TOWARD THE INTERIOR SUR FACE OF SAID CHAMBER AND COMPLETELY BURNING THE COMBUSTIBLE PART OF SAID MIXTURE PRIOR TO THE TIME IT REACHES SAID SURFACE WHEREBY THE HOT MOLTEN PRODUCTS RESULTING FROM THE COMBUSTION STRIKES THE INTERIOR SURFACE OF SAID CHAMBER FREED FROM SAID COMBUSTIBLE PART AND BY MEANS OF A MOVING LIQUID COOLANT, MAINTAINING SAID SURFACE AT A TEMPERATURE WHICH WILL CAUSE THE SLAG-FORMING PART OF THE HOT MOLTEN PRODUCTS RESULTING FROM THE COMBUSTION TO COALESCE AND SOLIDIFY ON SAID SURFACE TO FORM THEREON A LAYER OF REFRACTORY FREED FROM SAID COMBUSTIBLE PART AND, WHILE TRANSFERRING HEAT FROM SAID LAYER TO SAID MOVING COOLANT, MAINTAINING SAID LAYER OF REFRACTORY ON SAID SURFACE AS ADDITIONAL QUANTITIES OF SAID NON-COMBUSTIBLE HOT MOLTEN PRODUCTS COME IN CONTACT WITH SAID LAYER AND COALESCE THEREON.