Production method for chemical products and carbides

A method for producing chemical products and carbides, comprising:

• pyrolysis by obtaining a first gas fraction, a pyrolysis oil, and a residual fraction by pyrolysis of a crushed material of waste tires;
• carbide recovery by recovering a carbide from the residual fraction;
• hydrogenolysis by obtaining a second gas fraction, a light fraction with a boiling point of 350° C. or lower, and a heavy fraction with a boiling point higher than 350° C. by hydrogenolysis of a raw material oil containing at least a part of the pyrolysis oil;
• and
• steam-cracking by obtaining a chemical product and a raw material for producing a carbide consisting of a heavy distillate with a 10% distillation temperature of 190° C. or higher by steam cracking of a steam-cracking raw material oil containing at least a part of the light fraction,
• wherein a pyrolysis temperature of the pyrolysis is 350 to 750° C., and
• in the hydrogenolysis, the raw material oil contains a low-boiling-point raw material with a boiling point of 350° C. or lower and a high-boiling-point raw material with a boiling point higher than 350° C., and a content of the high-boiling-point raw material is 15% by mass or more on the basis of a total amount of the raw material oil.