IN310946: Second stage selective hydrogenation of pyrolysis gasoline to produce quality solvents

The invention relates to a catalytic process for selective hydrogenation of pyrolysis gasoline to produce styrene free solvents. Pyrolysis gasoline was hydrogenated in a fixed bed reactor over a sulphided Co-Mo/AI2O3 catalyst. Pyrolysis gasoline was contacted with the catalyst in the presence of hydrogen at temperature and pressure and liquid hourly velocity of 250-3500 C, 20-60 atm and 0.5-5.0 h-1 respectively. Pyrolysis gasoline was hydrogenated to reduce sulfur, unsaturates and styrene without affecting the yield of aromatics. The product is optimized by suitably selecting the catalyst and tuning process conditions. Non precious metals including nickel, cobalt, molybdenum and tungsten are used as catalyst for this process. The process and catalyst is so tuned that the loss of aromatics is minimal.