Innovative Steam Drying of Empty Fruit Bunch with High Energy Efficiency
Innovative Steam Drying of Empty Fruit Bunch with High Energy Efficiency
复制标题
高能效创新蒸汽干燥空果串
DOI：
10.1080/07373937.2014.970257
复制
发表时间：
2015
影响因子：
3.3
通讯作者：
T. Kashiwagi
中科院分区：
文献类型：
--
作者：
Muhammad Aziz;T. Oda;T. Kashiwagi
空果串是毛棕榈油米尔斯厂产生的固体废弃物之一，与其他固体废弃物相比，其利用价值最低。为了实现EFB的有效利用，干燥被认为是第一个关键的过程，由于EFB的高水分含量。在这项研究中，EFB干燥的基础上，火用回收，以实现高能源效率。采用流化床作为主干燥器。所提出的模型进行评估的能源效率，特别是关于目标水分含量和流化速度的影响。在干燥过程中，高达92%的能量可以再循环。流化速度对干燥总能耗影响不大，但干燥总能耗随目标含水率的降低而降低。此外，由于传热管的总长度涉及流化性能和经济问题，因此计算了浸没在流化床干燥器内的传热管的总长度。较低的目标水分含量导致较长的传热管，较高的流化速度导致较短的传热管。
Empty fruit bunch (EFB) is one of the solid wastes from crude palm oil mills and has the lowest value for utilization compared to other solid wastes. To achieve an efficient utilization of EFB, drying is considered the first crucial process due to the high moisture content of EFB. In this study, EFB drying based on exergy recovery is proposed to achieve high energy efficiency. A fluidized bed is adopted as the main dryer. The proposed model is evaluated in terms of energy efficiency, especially regarding the influence of target moisture content and fluidization velocity. Up to 92% of the energy involved in the drying process can be recirculated. The total energy consumption for drying decreases as the target moisture content decreases, though there is no significant impact of fluidization velocity to total energy consumption. In addition, the required total length of the heat transfer tubes immersed inside the fluidized bed dryer is calculated because it relates to fluidization performance and economic issues. Lower target moisture content results in a longer heat transfer tube, and higher fluidization velocity leads to a shorter heat transfer tube.