気流塔方式による石炭急速加熱に関する基礎研究(<特集>新コークス製造技術開発の現状)

概要

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An economical and environmental-friendly technology for the production of high-quality coke from non-caking or low-caking coal was developed, in the National Project called "Coke Production with Advanced Coal Conversion Technology (SCOPE21)". One of the core technological elements of SCOEP21 is rapid coal heating at the temperature less than softening or melting threshold. The targeted parameters are > 2,000 ℃/minute for heating speed, 380 to 400 ℃ for coal heating temperature, and not more than 50 ℃ for temperature deviation. In this paper we introduce basic results for the development of rapid heating process (RHP). We firstly made a simulation model for the rapid coal heating process by "Computational Fluid Dynamics". Then, we collected basic data required for simulation analysis and thereby verified the effectiveness of the simulation model in comparison of the test results for the behavior of coal particles in airflow with the simulation results through the cold model test. Finally, we conducted a performance prediction of rapid heating towers both in pilot scale and in commercial scale, by way of the computerized simulation. As a result, it was confirmed that the above-mentioned target parameters were attainable, and that this research well prepared the ground for the practical use of the subject process.
一般社団法人日本エネルギー学会の論文
2004-11-20