Method of treating a crude benzene with purified coke oven gas

Claim 1

A PROCESS FOR TREATING A CRUDE BENZENE WITH PURIFIED COKE OVEN GAS WHICH COMPRISES SUBJECTING COKE OVEN GAS TO PRESSURES ABOVE ABOUT 3 ATMOSPHERES BUT NOT ABOUT FROM 150* TO 300* C. WHILE SUBJECTING SAID HEATED GAS TO CATALYTIC TREATMENT WITH HYDROGENATION CATALYSTS, AND THEREAFTER SUBJECTING SAID GAS TO FURTHER COMPRESSION TO A PRESSURE ABOVE 20 ATMOSPHERES, HEATING SAID GAS TOGETHER WITH RECYCLE STOCK GAS AND A CRUDE BENZENE TO A TEMPERATURE OF ABOUT 200* C., SUPPLYING THE MIXTURE TO AN EVAPORATOR VESSEL FROM WHICH THE FORMED RESINS ARE DOWNWARDLY WITHDRAWN, THE VAPORIZABLE BENEZENE FRACTION COKE OVEN GAS AND RECYCLE STOCK GAS UPWARDLY WITHDRAWN, FURTHER HEATING THE VAPORIZED BENZENE, RECYCLE AND COKE OVEN GAS TO ABOUT 350* C. AND PASSING SAID MIXED GASES OVER A HYDROGENATION CATALYST, COOLING THE GASES LEAVING THE CATALYST CHAMBER AND LEADING THEM INTO A PRESSURE SEPARATOR, WITHDRAWING THE LIQUID RAFFINATE AND RETURNING THE UNCONDENSED GASES AS RECYCLIC STOCK.