Hydrotreatment of pyrolyzed oil derived from plastic waste stock

Abstract

Contaminants of one or more compounds comprising olefins, various metals, heteroatoms comprising nitrogen, oxygen, phosphorous, sulfur, and silicon, various halogens, salts, and particulates, are typically contained in oil derived from the pyrolyzation of plastic waste material. These contaminants are removed by a process wherein a first catalytic reactor hydrogenates, i.e. saturates, the one or more contaminants at relatively low temperatures. Various remaining contaminants are removed by a subsequent catalytic reactor, that generally has a higher hydrogenation temperature than the first reactor. The purified, recovered oil can be utilized for heating various, furnaces, reactors, boilers, stoves, and the like, or sold for use in various commercial oil products.