Establishment method of ethylene device product processing cost system

The invention discloses a method for establishing an ethylene device product processing cost system and belongs to the technical field of ethylene production. The method is characterized by comprising the following steps: step 1, determining the cyclic processing cost of an intermediate product; 2, determining the one-way processing cost of the ethylene device; and step 3, adding the determined cyclic processing cost of the intermediate product calculated in the step 1 and the one-way processing cost of the ethylene device calculated in the step 2 to determine the processing cost of the ethylene device product. In the method for establishing the product processing cost system of the ethylene device, the influence of intermediate products generated in the cracking process of the raw materials returning to the cracking furnaces again to participate in cracking on the raw materials is considered, and meanwhile, the difference of processing costs when different types of cracking furnaces crack different types of