Hydrogenation method for efficiently removing impurities and lightening pyrolysis oil

Abstract

This invention discloses a method for efficient deimpurification and lightening of pyrolysis oil using hydrogenation, relating to the field of pyrolysis oil treatment technology. The method includes the following steps: weighing a measured amount of pyrolysis oil, adding a molybdenum-based oil-soluble catalyst and a sulfiding agent, stirring until homogeneous to form an oil slurry; then introducing hydrogen gas to mix with the slurry, and carrying out a hydrocracking reaction in a slurry bed reactor. This invention uses waste tire pyrolysis oil and plastic pyrolysis oil as raw materials, employing a slurry bed hydrocracking process to achieve efficient hydrogenation of these materials under high temperature and high pressure conditions. This method solves the problems of easy clogging and rapid catalyst deactivation in traditional fixed-bed processes when handling heavy, high-impurity raw materials, and features strong raw material adaptability, high conversion rate, and high light oil yield. The resulting fuel oil product can be used as a clean fuel or chemical feedstock, realizing the high-value resource utilization of pyrolysis oil.

Images