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Kim Seok-Hwan Lim Byung-Ran Lee Soo-Koo 《Journal of Material Cycles and Waste Management》2018,20(2):1085-1089
Journal of Material Cycles and Waste Management - In the current work, drying characteristics of thickened sludge was investigated with respect to drying conditions in oil vacuum evaporation... 相似文献
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Ki-Tae Park Byung-Ran Lim Soo-Koo Lee 《Journal of Material Cycles and Waste Management》2010,12(3):235-239
This study was performed to investigate the possibility of utilizing sewage sludge as a fuel. The drying characteristics of sewage sludge were examined by using vacuum evaporation and fry-drying technology in a batch-type rotary evaporator. In addition, the optimal drying conditions of sludge in the vacuum evaporator were investigated in terms of the vacuum pressure, temperature, and oil dosage ratio, etc. Experimental results showed that the moisture content in the sludge decreased with increases in oil/sewage sludge ratio and temperature. Dried sludge fuel (SDF) product could be obtained with on average less than 5% moisture content and a lower heating value of more than 4000 kcal/kg. Considering energy efficiency, we suggest that the optimal operating condition for drying sludge is ?450 mmHg of vacuum, a temperature of 100°C, a drying time of 90 min, and a sludge/oil ratio of 1:1. The SDF product was shaped as granules and fluff-type particles. Evaluated from the perspective of the energy balance and economic considerations, this sludge drying system with vacuum fry drying could be used for effective sludge treatment and the production of SDF. 相似文献
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