發(fā)布時(shí)間：2018-04-08 14:37

  本文選題：管式反應(yīng)器　切入點(diǎn)：填料　出處：《化工學(xué)報(bào)》2017年02期

【摘要】：采用碘化物-碘酸鹽平行競爭反應(yīng)為工作體系,以離集指數(shù)(XS)表征微觀混合性能,實(shí)驗(yàn)考察了Reynolds數(shù)Re、物料體積流量比對裝填扁環(huán)填料和網(wǎng)架填料的管式反應(yīng)器的微觀混合性能的影響及離集指數(shù)在管式反應(yīng)器軸向、徑向的分布。結(jié)果表明,XS隨著Re的增大而下降,而物料體積流量比的增加會導(dǎo)致XS增加,相同條件下網(wǎng)架填料的XS小于扁環(huán)填料,離集指數(shù)在軸向上呈現(xiàn)先明顯降低后基本不變的趨勢。在實(shí)驗(yàn)研究的基礎(chǔ)上,利用團(tuán)聚模型計(jì)算裝填網(wǎng)架填料的管式反應(yīng)器的微觀混合時(shí)間(tm)為4.82~2.27 ms。與扁環(huán)填料對比,網(wǎng)架填料最小值(2.27 ms)低于扁環(huán)填料的最小值(2.73 ms),同時(shí)二者均小于空管的最小值(3.79 ms),表明裝填填料可以改善管式反應(yīng)器的微觀混合性能,網(wǎng)架填料的微觀混合性能略優(yōu)于扁環(huán)填料。
[Abstract]:The parallel competition reaction of iodide and iodate was used as the working system, and the separation index (XS) was used to characterize the micromixing properties.The effects of Reynolds number, volume flow ratio of material on the micro-mixing performance of tubular reactor filled with flat ring packing and reticulated packing were investigated and the distribution of the separation index in the axial and radial direction of the tubular reactor was investigated.The results show that the XS decreases with the increase of re, and the increase of mass flow ratio leads to the increase of XS. Under the same conditions, the XS of the packing is smaller than that of the flat ring, and the separation index decreases obviously in the axial direction and then remains unchanged.On the basis of experimental study, the microcosmic mixing time (tm) of the tubular reactor filled with grid frame filler was calculated by agglomeration model to be 4.82 ~ 2.27 ms.Compared with flat ring packing, the minimum value of reticulated packing (2.27 Ms) is lower than that of flat ring packing (2.73 Ms), and both of them are smaller than the minimum value of empty tube (3.79 Ms), which indicates that packing can improve the micro-mixing performance of tubular reactor.The microcosmic mixing performance of mesh packing is slightly better than that of flat ring packing.
【作者單位】： 化學(xué)工程聯(lián)合國家重點(diǎn)實(shí)驗(yàn)室天津大學(xué)化工學(xué)院;
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃項(xiàng)目(2012CB720500)~~
【分類號】：TQ050.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 張偉鵬;雍玉梅;張廣積;楊超;毛在砂;;短高徑比氣升式內(nèi)環(huán)流反應(yīng)器的混合及氣泡特性(英文)[J];Chinese Journal of Chemical Engineering;2014年06期

2 王文坦;劉U，

本文編號：1722046