發(fā)布時(shí)間：2018-07-17 04:07

【摘要】：重油懸浮床加氫技術(shù)優(yōu)點(diǎn)突出,是劣質(zhì)重油輕質(zhì)化的理想工藝,對(duì)煉油工業(yè)具有戰(zhàn)略性意義,同時(shí)也是一項(xiàng)巨大的挑戰(zhàn)。懸浮床加氫技術(shù)所采用的典型反應(yīng)器是鼓泡床反應(yīng)器,在反應(yīng)器的工程放大過程中,分布器的設(shè)計(jì)、優(yōu)化以及反應(yīng)器內(nèi)的流體力學(xué)特性至關(guān)重要。本文總結(jié)了管式分布器的具體設(shè)計(jì)方法,采用CFD方法模擬了分布器和反應(yīng)器,為懸浮床加氫技術(shù)選擇合適的分布器提供了依據(jù),進(jìn)而為反應(yīng)器的工程放大和工業(yè)化提供幫助。主要研究?jī)?nèi)容如下:參考華盛頓大學(xué)鼓泡床反應(yīng)器流體力學(xué)實(shí)驗(yàn),利用CFD軟件建立鼓泡床反應(yīng)器多相流計(jì)算模型,將模擬結(jié)果與實(shí)驗(yàn)數(shù)據(jù)進(jìn)行對(duì)比,吻合較好,驗(yàn)證了所建立模型的可靠性和準(zhǔn)確性�？偨Y(jié)了管式分布器的設(shè)計(jì)思路和具體設(shè)計(jì)方法,以5萬(wàn)噸/年重油懸浮床加氫工業(yè)裝置的反應(yīng)器為對(duì)象分別設(shè)計(jì)了10種不同尺寸的管式分布器;同時(shí)根據(jù)工程經(jīng)驗(yàn)設(shè)計(jì)了單噴嘴、文丘里噴嘴和多噴嘴型分布器。通過CFD方法建立了管式分布器的單相流計(jì)算模型,分析了環(huán)管和排管分布器出口氣速的分布規(guī)律,分別討論了孔徑、孔間距和布孔管管徑對(duì)兩種管式分布器出口氣速和分布不均勻度的影響,確定了尺寸最佳的管式分布器結(jié)構(gòu)參數(shù)。將設(shè)計(jì)的噴嘴型分布器以及最優(yōu)尺寸的管式分布器加入到工業(yè)尺寸鼓泡床反應(yīng)器中,采用驗(yàn)證過的CFD計(jì)算模型對(duì)反應(yīng)器進(jìn)行三維全尺寸模擬,分析了反應(yīng)器內(nèi)流動(dòng)規(guī)律,比較了不同分布器的性能,結(jié)果表明管式分布器的性能明顯優(yōu)于噴嘴型分布器。
[Abstract]:Heavy oil suspension bed hydrogenation technology has outstanding advantages and is an ideal process for the light weight of inferior heavy oil. It is of strategic significance to the refining industry and a great challenge at the same time. The typical reactor used in suspension bed hydrogenation is bubbling bed reactor. In the process of engineering amplification, the design and optimization of distributor and the hydrodynamic characteristics in reactor are very important. In this paper, the concrete design method of tubular distributor is summarized, and the distributor and reactor are simulated by CFD method, which provides the basis for selecting suitable distributor for suspended bed hydrogenation technology, and then provides help for the engineering enlargement and industrialization of the reactor. The main research contents are as follows: referring to the fluid dynamics experiment of bubble bed reactor at the University of Washington, the multiphase flow calculation model of bubble bed reactor is established by CFD software, and the simulation results are compared with the experimental data, and the results are in good agreement with each other. The reliability and accuracy of the model are verified. The design idea and design method of tubular distributor were summarized. 10 kinds of tubular distributors with different sizes were designed with the reactor of heavy oil suspension bed hydrogenation unit of 50,000 tons per year as the object. At the same time, single nozzle, Venturi nozzle and multi-nozzle distributor are designed according to engineering experience. The single-phase flow calculation model of the tube distributor is established by CFD method. The distribution law of the outlet gas velocity of the loop distributor and the row tube distributor is analyzed, and the pore diameter is discussed, respectively. The effects of hole spacing and pipe diameter on the outlet gas velocity and distribution uniformity of two kinds of tube distributors were studied. The optimum structural parameters of the tube distributor were determined. The designed nozzle distributor and the optimal size tube distributor were added to the industrial size bubbling bed reactor. The three-dimensional full-scale simulation of the reactor was carried out by using the verified CFD calculation model, and the flow law in the reactor was analyzed. The performance of different distributor is compared. The results show that the performance of tubular distributor is better than that of nozzle distributor.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE96

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 洪厚勝;張志強(qiáng);蔡子金;顏旭;顧承真;;CFD在自吸反應(yīng)器氣液流動(dòng)和傳質(zhì)特性研究中的應(yīng)用[J];化工學(xué)報(bào);2014年12期

2 張蕾;鄧文安;李傳;;渣油懸浮床加氫復(fù)配金屬催化劑的預(yù)硫化[J];石油學(xué)報(bào)(石油加工);2013年06期

3 薄守石;武俊庭;孫蘭義;;流體物性對(duì)懸浮床加氫環(huán)流反應(yīng)器的影響[J];石油煉制與化工;2013年08期

4 李浩;范傳宏;劉凱祥;;渣油加氫工藝及工程技術(shù)探討[J];石油煉制與化工;2012年06期

5 張煜;李紅波;李兆奇;王麗軍;李希;;湍動(dòng)漿態(tài)床流體力學(xué)研究(Ⅳ)帶垂直列管束的漿態(tài)床流體力學(xué)模型與模擬[J];化工學(xué)報(bào);2011年12期

6 趙輝;喻芳;山紅紅;楊朝合;;滴流床加氫裂化反應(yīng)器內(nèi)流體流動(dòng)的數(shù)值模擬[J];中國(guó)石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年04期

7 柴海;;重油懸浮床加氫裂化技術(shù)試驗(yàn)進(jìn)展[J];當(dāng)代化工;2008年05期

8 金環(huán)年;毛羽;王娟;劉艷升;;分布器位置對(duì)環(huán)流反應(yīng)器內(nèi)流動(dòng)狀況的影響[J];石油煉制與化工;2006年07期

9 王娟;毛羽;劉艷升;曹睿;;分布孔大小對(duì)環(huán)流反應(yīng)器內(nèi)流動(dòng)影響數(shù)值模擬[J];化學(xué)工程;2006年04期

10 谷芳,劉春江,余黎明,周超凡,袁希鋼,余國(guó)琮;氣-液兩相降膜流動(dòng)及傳質(zhì)過程的CFD研究[J];高�；瘜W(xué)工程學(xué)報(bào);2005年04期

相關(guān)碩士學(xué)位論文 前1條

1 劉升;渣油懸浮床加氫裂化技術(shù)的工業(yè)化試驗(yàn)研究[D];中國(guó)石油大學(xué);2010年

，

本文編號(hào)：2128941