By using refinery byproducts such as refining dry gas, reforming topped oil, propane, butane, raffinate oil and hydrogenation tail oil as feedstocks, the cost of ethylene production was reduced.

• 发挥炼化一体化的资源优势,利用炼厂干气、拔头油、丙烷、丁烷、抽余油、加氢尾油等副产物作乙烯原料,可降低乙烯生产成本。