Selective Hydrogenation of Pygas
Independently of the feed used and the cracking conditions, pyrolytic gasoline is formed with a high content of aromatics and various concentrations of dienes and alkines. Through selective hydrogenation of these poly-unsaturated compounds a stable, high octane gasoline is achieved. The diolefines, alkines and olefines can be hydrogenated in a second hydrogenation step for the extraction of valuable aromatics as chemical raw materials.
Typical Reaction Conditions
Catalyst load 15 kg Reactorfeed/ l Kat.* h
Temperature reacton inlet 10 – 15 °C
Temperature reactor outlet 15 – 30 °C
Total pressure at 100 % H2 9 – 22,5 bar
