CAJ | 학술논문

作为生物柴油连续生产装置的核心单元，扁平形超声反应器的停留时间分布直接反映反应器内的流型、返混程度和反应效果，对反应器设计、操作和控制具有重要意义．文中采用pHB-3型pH仪，以纯净水作流体、KOH溶液作示踪剂，采用脉冲法实时测定了扁平形多频超声辐射反应器的出口KOH应答信号，得到了反应器内流体的停留时间分布曲线，研究了超声功率和流体流量对反应器内流体流动形态及非理想性的影响．同时，用多釜串联模型对实验数据进行相关模拟，得到以下结论：在超声功率为200 W，流量分别为20、30 L／h时，理论串联釜数目分别为6.06、6.76，且流量较大时模拟效果较理想，此时槽内流体更趋于平推流．
작위생물시유련속생산장치적핵심단원，편평형초성반응기적정류시간분포직접반영반응기내적류형、반혼정도화반응효과，대반응기설계、조작화공제구유중요의의．문중채용pHB-3형pH의，이순정수작류체、KOH용액작시종제，채용맥충법실시측정료편평형다빈초성복사반응기적출구KOH응답신호，득도료반응기내류체적정류시간분포곡선，연구료초성공솔화류체류량대반응기내류체류동형태급비이상성적영향．동시，용다부천련모형대실험수거진행상관모의，득도이하결론：재초성공솔위200 W，류량분별위20、30 L／h시，이론천련부수목분별위6.06、6.76，차류량교대시모의효과교이상，차시조내류체경추우평추류．
Flatted ultrasonic reactor is the core component of the continuous biodiesel production equipment .As a reflection of the flow pattern , the back-mixing degree and the reaction effect , the residence time distribution ( RTD) is significant to the design , manipulation and control of flatted ultrasonic reactors .In this paper , the RTD curves were obtained through measuring the outlet KOH concentration of the flatted multi-frequency ultrasonic reac-tor with a pHB-3 type pH tester in real time , with KOH solution as the tracer in the pulse method and with purified water as the main fluid .Then, the contributions of ultrasonic power and fluid flow to the flow condition and non-ideality of the fluid in the reactor were investigated , and a fitting of the experimental data was performed by using a continuous-flow stirred tank reactor (CSTR) model.The results show that, under the action of 200W ultrasonic, the theoretical number of series kettles is respectively 6.06 and 6.76 when the flow rate is respectively 20 and 30 L/h;and that, at a high flow rate, the simulation effect becomes better and the flow pattern most likely tends to plug flow.