Method for purifying crude pyrolysis oil derived from pyrolysis of plastic waste and use thereof

There is provided a method for improving the quality of a crude pyrolysis oil derived from pyrolysis of plastic waste, the method comprising providing a crude pyrolysis oil derived from pyrolysis of the plastic waste, adjusting the pH of the crude pyrolysis oil, producing a pretreated crude pyrolysis oil, and separating the pretreated crude pyrolysis oil from the pretreated crude pyrolysis oil. A solid-liquid separation of the solid and liquid components of the pre-treated crude pyrolysis oil is carried out and/or the pre-treated crude pyrolysis oil is subjected to a liquid-liquid separation. 提供了一种用于改进源自塑料废物热解的粗热解油的品质的方法，该方法包括提供源自该塑料废物热解的粗热解油，调节该粗热解油的pH值，产生预处理的粗热解油，进行该预处理的粗热解油的固体组分和液体组分的固-液分离和/或使该预处理的粗热解油经受液-液分离。