本文選題：微反應器　切入點：微觀混合　出處：《北京化工大學》2017年碩士論文　論文類型：學位論文

【摘要】：過程強化是提高化工生產效能的重點,微反應器因其優(yōu)越的混合性能、簡單的結構成為過程強化領域的熱點。相較于傳統(tǒng)反應器,微反應器不存在明顯的“放大效應”且操作簡單安全,可簡單的通過單元結構復制集成的方式對微反應器進行放大,提高產能實現(xiàn)工業(yè)化應用。本文構建了一種新型的集束式對流微通道反應器(C-CFMCR),對其微觀混合性能進行探究,并運用該反應器制備電容材料二氧化錳。本課題的主要研究內容及結論如下:(1)基于I-/IO3-反應體系,對單束式對流微通道反應器(S-CFMCR)的結構進行優(yōu)化,得出微通道內徑0.5 mm、開孔大小1.0 mm和微通道內徑0.8 mm,開孔大小1.3 mm的兩種規(guī)格的微通道反應器混合效果較優(yōu)。以S-CFMCR為復制結構單元,進行集束放大構建C-CFMCR,對C-CFMCR體積流量、體積流量比、放大倍數等參數進行了實驗研究,得出:隨著體積流量的增大,微觀混合性能先增強再減弱,存在一個較優(yōu)操作區(qū)間;體積流量比為1時,反應器混合性能最佳;放大倍數對反應器的混合效果影響不大,不存在明顯的放大效應。(2)將C-CFMCR應用于MnO2的制備,探究操作條件、反應器結構和后處理步驟對MnO2性能的影響,得出:控制操作條件,可以得到形貌與性能較好的MnO2;陳化時間為2h,220℃下對MnO2進行2 h煅燒,得到的樣品的比電容為175 F·g-1,循環(huán)充放電500次損失約10%。
[Abstract]:Process strengthening is the key to improve the efficiency of chemical production. Because of its superior mixing performance, the simple structure of microreactor has become a hot spot in the field of process strengthening. There is no obvious "amplification effect" in the microreactor and the operation is simple and safe. The microreactor can be amplified simply by the way of unit structure replication and integration. In this paper, a new type of cluster convection microchannel reactor (CCFMCR-C) was constructed and its microscopic mixing performance was investigated. The main contents and conclusions of this study are as follows: 1) based on the I / R 3 reaction system, the structure of single beam convection microchannel reactor (SCFMCRs) was optimized. The results showed that the mixing effect of two kinds of microchannel reactors with 0.5 mm inner diameter, 1.0 mm hole size and 0.8 mm internal diameter of microchannel and 1.3 mm hole size was better. Using S-CFMCR as the replicating structure unit, the C-CFMCRs were constructed by cluster amplification, and the volume flow rate of C-CFMCR was calculated. The experimental results show that with the increase of volume flow rate, the microcosmic mixing energy increases first and then weakens, and there is a better operation interval, and the volume flow ratio is 1:00, and the reactor mixing performance is the best. The amplification factor has little effect on the mixing effect of the reactor, and there is no obvious amplification effect. (2) the C-CFMCR is applied to the preparation of MnO2, and the effects of operation conditions, reactor structure and post-treatment steps on the performance of MnO2 are explored. MNO _ 2 with good morphology and properties can be obtained, and the specific capacitance of the sample is 175F 路g ~ (-1), and the cyclic charge / discharge loss of 500 times is about 100.The sample is calcined for 2 hours at 2hu ~ (220 鈩，

本文編號：1644537