PROCESS FOR REDUCING HAZE IN HEAVY BASE OIL AND HYDROISOMERIZATION CATALYST SYSTEM HAVING REDUCED HAZE

摘要

The present invention relates to a method for reducing haze in heavy base oil and a hydroisomerization catalyst system having reduced haze. Provided is the method for reducing haze in heavy base oil, the method comprising the steps of: obtaining first outflow oil by bringing a supplied raw hydrocarbon material into contact with a first catalyst including ZSM-12 family zeolite; and obtaining second outflow oil by bringing the first outflow oil into contact with a second catalyst including ZSM-48 family zeolite. Provided is the hydroisomerization catalyst system having reduced haze, the system comprising: a first catalyst region in which a first catalyst including ZSM-12 family zeolite is disposed; and a second catalyst region in which a second catalyst including EU-2 zeolite is disposed. The first catalyst region is disposed in the upstream region of the second catalyst region.