An analysis of energy supply-demand structure focusing on complementary products for environmental and energy policy evaluation

许多环境政策只关注最终产品，例如塑料回收政策。但很少有政策关注更多的上游互补产品。本研究以联合国能源统计数据库为基础，分析了日本和其他一些国家石油产品的供需结构，以规划以互补产品为重点的环境政策。非能源消费较多的石油产品有石脑油、天然气、石油沥青、液化石油气等。石脑油和沥青主要用于非能源用途，很难找到其他实际的能源用途。但其他产品也被用于能源消耗。例如，对石脑油制成的塑料废料进行热回收，主要是指石脑油可以通过塑料制品作为燃料。废物回收政策应注重最终产品和上游补充产品。

Many environmental policies focused on only end product, for example, as with plastics recycling policy. But there are few policies that focus on more upstream complementary product too. In this study, based on UN Energy Statistics Database, the supply-demand structure of petroleum products in Japan and some other countries is analyzed for planning environmental policies focusing on complementary product too.The petroleum products relatively consumed for non-energy uses are naphtha, natural gas, petroleum asphalt, liquefied petroleum gas and so on. Naphtha and asphalt are especially consumed for non-energy uses and are difficult to find out other practical energy use. But other products are consumed for energy use too. For example, thermal recovery from the waste of the plastic that are made from naphtha mainly means that naphtha can be used as fuel through plastic product. Waste recycling policies should focus on both end product and upstream complementary product.