使用改良塞流式反應電解槽，來研究電化學產製二氧化氯之研究

Studied on electrochemical production of chlorine dioxide by modified plug flow reactor

二氧化氯具備藥效長、無毒性且不破壞環境等優點，其製備方式大致可分為化學法和電解法，使用化學法製備二氧化氯過程中，會伴隨大量無機副產物(亞氯酸根、氯酸根)的產生使其不適用於食品消毒處理；而使用電解法製備二氧化氯雖具有用藥簡單、可現場連續製備並適用於食品消毒處理等優勢，但目前大多數電解法皆採用氯化鈉來作為主要反應物，在這一電解過程會產生大量的氯氣，故本研究設計以Plug Flow Reactor(PFR)反應器作為概念進行電解槽設計並加以改良，採取亞氯酸鈉作為主要反應物，同時藉由連續碘量法分析，探討電流、進藥體積流率、極距、電解液濃度、pH值環境等因素對於電解法製備二氧化氯之產率、餘氯、純度等影響。本研究結果顯示，利用PFR反應器概念結合亞氯酸鈉電解所製備的二氧化氯，其純度大幅提升並大量減少副產物生成。

"The advantages of chlorine dioxide are nontoxic, pollution and long efficiency.The preparation method ofchlorine dioxide can be categorized in chemical andelectrolysis methods. Chemical method has not only synthesized chlorine dioxide but also produce by-products (ClO2－and ClO3－). Therefore, this method is unsuited to disinfect the food. Chlorine dioxide produced by electrochemistry technology is simple dosing and continuous operating on-site processing, and the product can be applied to food disinfection which uses sodium chloride to be the main reactant will produce excess chlorine. Hence, we design a new reactor by Plug Flow Reactor (PFR) asthe mainmodel cell, while takingsodium chloriteas the mainreactants. We conferred thecurrent,flow rate into reactor,polar distance, electrolyte concentrationand pH with theelectrolyticpreparationof chlorine dioxide yield, residual chlorine, purity and othereffects by E. Marco Aieta method. The purity of chlorine dioxide is promoted by sodium chlorite method and reduces the generation of by-product."