Combined processing method for producing basic organic chemical raw materials from crude oil

The invention relates to a combined processing method for producing a basic organic chemical raw material from crude oil, which comprises the following steps: by taking full-fraction crude oil as a raw material, carrying out desalination and dehydration pretreatment, exchanging heat with a high-temperature heat exchange medium, and carrying out flash evaporation separation to obtain light naphtha and heavy fraction oil; a heavy oil catalytic cracking unit, a light oil catalytic cracking unit and a hydrocracking and product separation unit are utilized, raw materials suitable for cracking and cracking are preferably selected, and the property composition of the cracking and cracking raw materials is highly matched with products such as low-carbon olefin and light aromatic hydrocarbon in molecular structures, so that deep cracking and cracking conversion of light and heavy fractions are realized; the goals of low processing cost and high yield of low-carbon olefin and light aromatic hydrocarbon are achieved. 一种