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RISS 인기검색어
- 검색키워드
- 저자 : Karunarathna A. K. (검색결과 1 건)
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Alahakoon A. M. Y. W.,Karunarathna A. K.,Dharmakeerthi R. S.,Silva F. H. C. A. 한국농업기계학회 2022 바이오시스템공학 Vol.47 No.4
Purpose This study describes the design and development of a pyrolysis reactor for continuous biochar production using rice husk. The main purpose was to invent a simple technology with minimal specifc operational requirements which could be operated easily under feld conditions. Methods The designed novel double-chamber downdraft (DcDD) reactor comprised of an insulated outer cylinder for energy generation, inner cylinder for pyrolysis, and a condensing system. During the study, temperature behavior, energy interactions, and biochar properties were employed to evaluate the performance of the reactor. Results The operational temperature was monitored continuously at four predetermined heights and a temperature profle was observed at a range of 380 to 685 °C on the cylindrical reactor. Design confguration and thermal conservation techniques helped to achieve a heat loss as low as 0.81 MJ/kg biochar. The results revealed that the thermal efciency of the DcDD reactor was 57% with an average biochar production rate of 10±1 kghr-1. It consumed 35±3 kghr-1 of rice husk as the feedstock and 14±5 kghr-1 of rice husk as fuel. Conclusions With the achieved operational capacity and thermal efciency, DcDD reactor is a suitable option for converting the discarded biomass to a demanding product which will enhance the soil properties in agricultural production systems.
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