【摘要】：隨著國家工業(yè)技術(shù)的快速發(fā)展,對能源的依賴程度越來越高,煉油裝置進行擴量改造也是大勢所趨。為了降低裝置的改造成本,采用高效立體垂直塔盤對裝置進行擴量改造能夠取得很好的經(jīng)濟效益。論文針對一種高效立體垂直塔盤,通過計算機軟件進行數(shù)值模擬,研究了立體垂直塔盤的工作原理和帽罩內(nèi)部的流動特性,在裝置改造完成后對塔盤的現(xiàn)場使用效果進行了驗證。計算分析表明,立體垂直塔盤由于帽罩的特殊結(jié)構(gòu),可明顯提高氣、液兩相傳質(zhì)傳熱效果。氣、液兩相在帽罩內(nèi)并流接觸上升,高速氣流將不穩(wěn)定的液膜破碎成直徑不等的液滴,氣、液兩相在帽罩內(nèi)湍流摻混,兩相混合均勻度增加,傳質(zhì)傳熱效果更好。帽罩上部的分離板使氣液兩相碰頂折返,與底部上來的氣液兩相實現(xiàn)互噴,加強了傳質(zhì)效果。與鼓泡型普通塔盤相比,氣、液兩相在帽罩內(nèi)充分混合進行熱質(zhì)交換后,從帽罩壁孔水平噴射而出,在噴射罩外開始分離,氣相進入上一層塔盤,液相落入下層塔板,使塔板上的液體基本上不含氣泡,縮短了液體在降液管內(nèi)的停留時間,使塔盤處理能力增大。通過現(xiàn)場應(yīng)用發(fā)現(xiàn),立體垂直塔盤與HTV浮閥塔盤相比,在處理量相同的情況下,傳質(zhì)傳熱效果更好,產(chǎn)品收率增加近40%,壓降減小20%左右;在收率不變、產(chǎn)品質(zhì)量相同的情況下,塔的處理能力增加20%左右,操作彈性增大,高達70%~120%。
[Abstract]:With the rapid development of national industrial technology, the degree of dependence on energy is becoming more and more high. In order to reduce the cost of revamping, it is possible to obtain good economic benefits by using high efficiency vertical trays to expand the equipment. In this paper, the working principle of the vertical tray and the flow characteristics inside the cap are studied by numerical simulation of a kind of high efficiency vertical tray. After the revamping of the device, the field effect of the tray was verified. The calculation and analysis show that because of the special structure of cap cover, the effect of gas and liquid two-phase heat transfer can be improved obviously. The gas and liquid two phases are in contact with each other in the cap, the unstable liquid film is broken into droplets with different diameters by high velocity gas flow, and the gas and liquid phases are turbulent mixed in the cap. The uniformity of the two phase mixing is increased, and the effect of mass transfer heat transfer is better. The separation plate in the upper part of the cap makes the gas and liquid collide with the top and spray mutually with the gas-liquid two phase up at the bottom, which enhances the mass transfer effect. Compared with the common bubbling tray, the gas and liquid phases are fully mixed in the cap cover for heat and mass exchange, then ejected horizontally from the hole of the cap wall, and separated outside the cap, the gas phase enters the upper tray, and the liquid phase falls into the lower tray. The liquid on the tray is basically free of bubbles, which shortens the residence time of the liquid in the down-flow tube and increases the processing capacity of the tray. Through the field application, it is found that compared with the HTV valve tray, the three-dimensional vertical tray has better heat transfer effect under the same treatment capacity, the product yield is increased by nearly 40 percent, the pressure drop is reduced by about 20 percent, and when the yield is constant and the product quality is the same, The processing capacity of the tower increased by about 20%, and the flexibility of operation increased, up to 70 / 120.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE962

【參考文獻】

相關(guān)期刊論文 前10條

1 趙鑫輝;王娟娟;;烴處理靜設(shè)備常見故障處理[J];中國石油和化工標(biāo)準(zhǔn)與質(zhì)量;2013年17期

2 郭華;孟祥玉;;浮閥塔盤與固閥塔盤在甲醇水分離塔中的應(yīng)用[J];科技信息;2013年21期

3 張秋香;姜元濤;熊丹柳;趙培;;篩板精餾塔的板效率研究[J];化學(xué)工程;2011年07期

4 張斌;;浮閥塔盤問題分析[J];中國特種設(shè)備安全;2011年01期

5 曹曉玲;;淺談塔設(shè)備的分類及性能[J];化工設(shè)計通訊;2010年03期

6 胡維華;;篩板式板式塔的基本原理及流體力學(xué)性能分析[J];江西化工;2007年01期

7 王余偉;王金堂;;泡罩塔負(fù)荷性能圖及其應(yīng)用[J];合成技術(shù)及應(yīng)用;2006年03期

8 周三平;樊玉光;陳兵;褚雅志;;浮閥鼓泡器塔板的流體力學(xué)性能實驗[J];化工進展;2006年01期

9 劉繼東,呂建華,張競平,李春利;新型立體傳質(zhì)塔板及其流體力學(xué)性能[J];化工學(xué)報;2005年06期

10 裴志明,楊鐵男,郭彥書;板式塔負(fù)荷性能圖的優(yōu)化方法[J];化工設(shè)計;2005年01期

，

本文編號：2176165