ブルータワーガス化炉の現状と展望(<特集>バイオマスガス化技術の現状と展望)

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The Blue Tower (BT) process is a kind of biomass gasifier, by which biomass feedstock is decomposed at 550 deg.C with superheated steam under the reductive atmosphere. In this system, the gasifier consists of a pre-heater, a reformer and a pyrolyzer. The heat carrier balls (Al_2O_3) are circulated in each vessel during receiving or discharging heat (sensible heat). Through a reforming process, the syngas with high concentration of H_2 gas is generated. Also, since the system scale is comparatively small, it would be a suitable system for the biomass distributed energy systems. In this paper, based on the results of laboratory experiment and operation test due to demo-plant, the characteristics of BT process were explained. Based on the know-how on the process design of BT plant, which was obtained by our past experimental analyses etc., the performance example of Bio-H_2 production system of 12 t-dry/d (J.Cedar) was described. Through our R&D activities, the biomass energy supply projects in use of BT plant would be close to be commercial viability. From the viewpoint of sustainable operation, on our project, we have considered not only the specific technology aspects but also the feasibility studies on the energy and/or cost analyses and the CO_2 emission based on LCA methodology. On the future possibility of BT plant, the BTL (e.g. methanol or di-methyl ether) fuel production, or the combined BT-SOFC (Solid Oxide Fuel Cell) system would be expectable. Also, we referred briefly to these topics including the possible introduction of projects.
2012-10-20

ブルータワーガス化炉の現状と展望(<特集>バイオマスガス化技術の現状と展望)

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