19.コークス炉における廃プラスチック・リサイクル技術の開発およびLCA検討

概要

論文の詳細を見る
The Japan Iron & Steel Federation, as a voluntary energy-saving action plan, proposed a 10% energy reduction by 2010 with 1990 as the basis. Furthermore, it has put forward an additional 1.5% energy saving by the use of waste plastics as a metallurgical raw material. The investigation of the use of waste plastics by steel industry has mainly focused on processing in blast furnaces. The coking process is expected to be suitable for the utilization of waste plastics because the process provides high temperature (〜1200℃) and reducing atmosphere. By laboratory tests and actual coke oven tests, the product yields of the typical waste plastics, when pyrolyzed in a coke oven, were approximately 20, 40 and 40 mass% for coke, gas, and light oil & tar, respectively. It was found that the operation of 1 mass% addition of waste plastics into coal charge was feasible. Using the life-cycle assessment (LCA) methodology, the waste plastics recycling process in coke ovens was estimated. The process is thought to be effective to significantly reduce carbon consumption.
一般社団法人日本エネルギー学会の論文
2003-10-23