構築した廃プラスチックリサイクルシステムのエネルギ-収支

概要

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This paper covers a newly developed recycling system for waste plastics such as waste FRP boats. This issue of abandoned waste FRP boats becomes one of the social problems due to their environmental impact. The authors developed the recycling system in order to carry out the actual recycling of FRP boats, featuring its economical advantage as the first priority with further consideration of social needs. In this system, the resin in waste FRP is degraded by supercritical water to be recycled as valuable raw materials, while glass fiber can be recycled by being melted at 1400〜1500℃ and molded into some shapes of products. Necessary supercritical water and electrical energy are to be supplied by its generating system using fuel of heat decomposed gas of waste plastics. In this paper, the authors are reporting its energy balance from the following economic point of view by which this system should be evaluated. (1) Fairly good in economics because of much more surplus electric power generated to be sold. (2) Good in power cycle efficiency. The features of this system are as follows ; (3) It is possible to recycle both waste FRP and general waste plastics. (4) It is virtually unnecessary to use landfills. (5) The system does not pollute. There is no likelihood of generating dioxin. (6) Pretreatment such as washing, sorting and so forth would not be necessary for waste materials.
独立行政法人海上技術安全研究所の論文
1998-05-13