本文選題：撞擊流反應(yīng)器 + 微觀混合��； 參考：《北京化工大學(xué)》2015年碩士論文

【摘要】：近年來,過程強(qiáng)化得到了越來越多的重視,因此各國學(xué)者通過對多種反應(yīng)器進(jìn)行開發(fā)研究,來強(qiáng)化傳遞過程。其中,撞擊流反應(yīng)器自問世以來,因?yàn)槠淞己玫膫鬟f特性以及優(yōu)異的混合效果,在燃燒、干燥、研磨以及萃取等領(lǐng)域都得到了廣泛的應(yīng)用,但目前研究者們對于撞擊流反應(yīng)器的微觀混合特性的研究還不夠充分和深入。在本文中,采用碘化物-碘酸鹽平行競爭反應(yīng)作為工作體系,對T型不等徑撞擊流反應(yīng)器的微觀混合性能進(jìn)行了研究�？疾鞖潆x子濃度、撞擊流速度等因素對T型撞擊流反應(yīng)器的微觀混合的影響,并對微觀混合時(shí)間進(jìn)行了估算,最終給出定性的結(jié)論。結(jié)果表明：隨著酸濃度的增大,離集指數(shù)呈現(xiàn)上升趨勢；撞擊動量比PB/PA變大,離集指數(shù)變小,且出現(xiàn)臨界值,超出臨界值后撞擊動量比增加對離集指數(shù)影響較�。辉贚/R=0.625時(shí),微觀混合性能最好；在恒定摩爾比的情況下,隨著體積流量比R的增加,離集指數(shù)明顯增大；對3-4撞擊流反應(yīng)器進(jìn)行等比例放大,結(jié)果表明三種反應(yīng)器的離集指數(shù)都隨著酸溶液流速增加而緩慢下降,整體變化趨勢較為一致；估算了實(shí)驗(yàn)條件下的微觀混合時(shí)間tm,其數(shù)量級可低至104s,表現(xiàn)出了優(yōu)異的微觀混合性能,說明撞擊流反應(yīng)器是一個(gè)理想的快速反應(yīng)器。
[Abstract]:In recent years, more and more attention has been paid to process strengthening. Among them, impinging flow reactors have been widely used in the fields of combustion, drying, grinding and extraction because of their good transfer characteristics and excellent mixing effect. However, the research on micro mixing characteristics of impinging flow reactor is not enough. In this paper, the micro-mixing performance of T-type impinging stream reactor with unequal diameter was studied by using iodide-iodate parallel competitive reaction as the working system. The effects of hydrogen ion concentration and impinging current velocity on the micro-mixing of T-type impinging current reactor were investigated. The microscopic mixing time was estimated and the qualitative conclusion was given. The results show that with the increase of acid concentration, the dissociation index increases, and the impact momentum is larger than PB/PA, and the separation exponent becomes smaller, and the critical value appears. The impact momentum ratio increases slightly when the critical value exceeds the critical value, and at L/R=0.625, the influence of the impact momentum ratio on the dissociation index is small. The microscopic mixing performance is the best. At constant molar ratio, the separation index increases obviously with the increase of volume flow ratio R, and the 3-4 impinging flow reactor is magnified in equal proportion. The results show that the separation index of the three reactors decreases slowly with the increase of the flow rate of the acid solution, and the overall variation trend is consistent. The microscopic mixing time (tm) under experimental conditions is estimated, the order of magnitude is as low as 104s, which shows excellent microscopic mixing performance, which indicates that impinging flow reactor is an ideal fast reactor.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ052

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