Method of producing gasoline

Claim 1

THE PROCESS OF CONVERTING COAL WHICH COMPRISES ESTABLISHING A FIRST, SECOND AND THIRD FLUIDIZED BED OF HOT FINELY DIVIDED COKE, EACH IN A SEPARATE ZONE, BY PASSING A GASIFORM FLUID UPWARDLY THROUGH EACH OF SAID BEDS, THE FLUIDIZING GAS IN THE SECOND BED BEING A COMBUSTION SUPPORTING GAS AND THE FLUIDIZING GAS IN THE THIRD BED COMPRISING GAS REACTANT WITH SAID COKE TO PRODUCE HYDROGEN AND CARBON MONOXIDE, THE PROCESS COMPRISING PREHEATING FINELY DIVIDED COAL TO A TEMPERATURE BETWEEN ABOUT 250* AND 600* F., CONTINUOUSLY FEEDING SAID PREHEATED COAL INTO MIXTURE WITH THE COKE IN SAID FIRST BED, MAINTAINING THE MIXTURE OF COKE AND COAL AT COAL-CARBONIZING TEMPERATURE IN SAID FIRST BED TO DISTILL OFF VOLATILE CONSTITUENTS INCLUDING TAR FROM SAID COAL AND THEREBY CONVERT SAID COAL TO A RESIDUE COKE, CONTINUOUSLY FEEDING COKE FROM SAID FIRST BED TO SAID SECOND BED, CARRYING OUT COMBUSTION IN SAID SECOND BED TO RAISE BED TEMPERATURE SUBSTANTIALLY ABOVE THE TEMPERATURE IN THE FIRST BED, CONTINUOUSLY FEEDING A STREAM OF HOT COKE FROM THE SECOND BED TO THE FIRST BED, CONTINUOUSLY FEEDING A STREAM OF HOT COKE FROM THE SECOND BED TO THE THIRD BED, RECOVERING A GAS CONTAINING HYDROGEN AND CARBON MONOXIDE FROM THE THIRD BED, CATALYTICALLY SNYTHESIZING LIQUID HYDROCARBONS FROM PART OF SAID LAST MENTIONED GAS, AND RECYCLING AN UNCOVERTED RESIDUE PART OF SAID LAST MENTIONED GAS TO HYDROGENATE THE COAL TAR AND THEREBY INCREASE THE YIELD OF LIQUID PRODUCT.