Evaluation of Waste to Energy Facilities in Japan-Electricity and Energy Balance based on Analysis of Operation and Maintenance Data-

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  • 低炭素社会における廃棄物発電の評価に関する研究―維持管理データ分析による電力・エネルギー収支―
  • テイタンソ シャカイ ニ オケル ハイキブツ ハツデン ノ ヒョウカ ニ カンスル ケンキュウ イジ カンリ データ ブンセキ ニ ヨル デンリョク エネルギー シュウシ
  • -Electricity and Energy Balance based on Analysis of Operation and Maintenance Data-
  • －維持管理データ分析による電力・エネルギー収支－

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Abstract

The policy of waste to energy (WTE) has been promoted as an important policy for alternative energy and one of the principle infrastructure plans of the Japanese government. However, problems with dioxin have necessitated various changes of WTE technology, and WTE facilities now must have flue gas treatment equipment with long-chain process , ash melting furnace , and gasification and melting furnace. Although WTE facilities with the disposal capacity of 300t/d or greater have been considered to be more effective and desirable, the number of these facilities has not increased, and WTE facilities with capacity of less than 300t/d have been increasing in compliance with the dioxin guidelines for continuous combustion and regional waste disposal. This study investigates and analyzes the generation, purchase and consumption of electricity / fossil fuels using the operation and maintenance data of all of WTE facilities operated in 2007 in Japan. Our findings show that the smaller the capacity of WTE facility , the greater the consumption of electricity and energy per ton. In the future it may be recommended that WTE facilities of 300t/d or greater be increased and the ash from several WTE facilities be treated jointly.

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