Development of Flame Jet Recycling System

本研究的目的是找出火焰喷射回收系统的基本处理能力，为工艺池的设计提供依据，并找出系统各组成部分的最佳组合。用热效率和体积换热系数(VHTC)参数对实验结果进行了分析，结果表明：1)热效率较低，废气从工厂排放到大气中，没有回收热量。废气的热量必须在实际工厂中回收。2)体积换热系数的最大值为800(kcal/m^&lt；*&gt；3/h/C)。为了获得较大的VHTC，如果产品的含水率足够低，则建议采用较低的加工温度。3)当喷嘴出口到工艺罐底部的距离较短时，可以获得较好的热效率。这被认为是由于工艺罐底部的强大循环造成的。4)加工成本不够低，不足以仅通过销售产品来提高利润。在预计处置费用的情况下，这一制度是可行的。

The purpose of this study is to find the fundamental processing capacity of Flame Jet Recycling System (FJRS), which makes it possible to design the process tank and to find the optimum combination of each system component.Three kinds of sludge wastes, aluminum hydroxide sludge, sewage sludge and crude oil sludge, were processed by a experimental system to recover the material for recycling use. The experimental results were analyzed by the parameters of thermal efficiency and volumetric heat transfer coefficient (VHTC).The following results were obtained.1) The thermal efficiency was rather low, for the exhaust gas was emitted to the atmosphere from the plant without recovering the heat. The heat of the exhaust gas must be recovered in a practical plant.2) The maximum value of the volumetric heat transfer coefficient was 800 (kcal/m^<****>3/h/C). In order to obtain the large VHTC,the low processing temperature is recommended, if the water dontent of the product is sufficiently low.3) A good thermal efficiency was obtained when the distance between nozzle exit and the bottom of the process tank was short. This was considered to be caused by a strong circulation around the bottom of the process tank.4) The processing cost is not low enough to raise a profit by only selling the product. This system is feasible when the disposal fee is expected.