本文關(guān)鍵詞： 含油污水 微細(xì)氣泡 氣浮分離 離心分離 除油效率　出處：《北京化工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：高含水油田、深水油田開發(fā)以及日趨嚴(yán)格的環(huán)保標(biāo)準(zhǔn)迫切需要研制緊湊高效的含油污水處理技術(shù)設(shè)備。論文在探究國內(nèi)外不同廠家的氣浮旋流一體化設(shè)備結(jié)構(gòu)及工作原理基礎(chǔ)上,結(jié)合本課題組已有理論體系,首次在國內(nèi)推出了內(nèi)部兩級串聯(lián)協(xié)同運(yùn)行的立式氣旋浮裝置實(shí)驗(yàn)樣機(jī)。前期提出五種可行結(jié)構(gòu)方案并進(jìn)行一一對比論證,挑選出理論上最優(yōu)的設(shè)計方案進(jìn)行結(jié)構(gòu)設(shè)計。在現(xiàn)有理論體系下,依靠處理量、停留時間、旋流強(qiáng)度等主要設(shè)計參數(shù)控制設(shè)備初始結(jié)構(gòu)尺寸。后期利用GAMBIT軟件進(jìn)行建模,并利用ANSYS FLUENT軟件對內(nèi)部核心構(gòu)件的尺寸進(jìn)行改進(jìn)與優(yōu)化。實(shí)驗(yàn)階段由兩部分構(gòu)成：微細(xì)氣泡性能評估實(shí)驗(yàn)及氣浮旋流設(shè)備除油實(shí)驗(yàn)。微細(xì)氣泡性能評估實(shí)驗(yàn)利用寧波公司所提供的氣泡發(fā)生器進(jìn)行室內(nèi)實(shí)驗(yàn)研究,摸索流量、注氣比、注氣壓差三個參數(shù)對微細(xì)氣泡粒徑影響的規(guī)律,為后續(xù)的實(shí)驗(yàn)提供一定的參考。實(shí)驗(yàn)結(jié)果表明：較小的微孔孔徑、較大的流量、適當(dāng)?shù)淖獗扰c注氣壓差有利于形成較好的微細(xì)氣泡。氣浮旋流設(shè)備除油實(shí)驗(yàn)分單級與內(nèi)部兩級串聯(lián)實(shí)驗(yàn)兩部分進(jìn)行,借助設(shè)備單級運(yùn)行的正交實(shí)驗(yàn)、變流量實(shí)驗(yàn)摸索出大致的最優(yōu)參數(shù)；基于設(shè)備單級運(yùn)行的最優(yōu)參數(shù)進(jìn)行內(nèi)部兩級串聯(lián)設(shè)備的實(shí)驗(yàn)研究。實(shí)驗(yàn)結(jié)果表明：在不添加破乳劑的情況下,設(shè)備單級穩(wěn)定運(yùn)行時除油效率約為30%左右,兩級穩(wěn)定運(yùn)行時除油效率約為35%左右；加入破乳劑后,設(shè)備兩級串聯(lián)穩(wěn)定運(yùn)行時除油效率約為45%左右。本文通過理論研究與實(shí)驗(yàn)研究相結(jié)合的方式,驗(yàn)證了內(nèi)部兩級串聯(lián)氣浮旋流一體化設(shè)備的可行性,為下一階段即將進(jìn)行的改進(jìn)優(yōu)化及工業(yè)放大提供了一定的指導(dǎo)。
[Abstract]:High water cut oil fields. The development of deepwater oil fields and the increasingly stringent environmental protection standards urgently require the development of compact and efficient oil-bearing sewage treatment technology equipment. This paper explores the structure and working principle of air-floatation swirl integrated equipment from different manufacturers at home and abroad. Go. Combined with the existing theoretical system of our group, the experimental prototype of the vertical cyclone floatation device is first developed in China. Five feasible structural schemes are put forward and compared one by one. The optimal design scheme is selected for the structural design. Under the existing theoretical system, it depends on the processing capacity and the residence time. The main design parameters, such as swirl intensity, control the initial structure size of the equipment. GAMBIT software is used to model the model later. The size of internal core components is improved and optimized by ANSYS FLUENT software. The experiment consists of two parts:. The performance evaluation experiment of micro bubble and the deoiling experiment of air floatation swirl equipment. The performance evaluation experiment of micro bubble is carried out in laboratory by using bubble generator provided by Ningbo company. The effects of three parameters, such as flow rate, gas injection ratio and air pressure difference, on the particle size of micro bubble are studied. The experimental results show that the smaller pore diameter and larger flow rate can be used as reference for further experiments. Proper gas injection ratio and air pressure difference are favorable to the formation of fine bubbles. The oil removal experiment of air floatation swirl equipment is divided into two parts: single stage and internal two stage series experiment, with the aid of the orthogonal experiment of single stage operation of the equipment. The approximate optimal parameters are found out by variable flow experiments. Based on the optimal parameters of the single stage operation of the equipment, the experimental results show that the oil removal efficiency of the equipment is about 30% when the demulsifier is not added. The oil removal efficiency of two-stage stable operation is about 35%; With the addition of demulsifier, the oil removal efficiency of the equipment is about 45% when the two-stage series operation is stable. This paper combines the theoretical and experimental studies. The feasibility of the internal two-stage air-floatation swirl integrated equipment is verified, which provides some guidance for the improvement and optimization and industrial amplification in the next stage.
【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】：X741

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相關(guān)期刊論文 前1條

1 周寶勇;余建星;杜尊峰;張中華;許華力;;邊際油田開發(fā)新型平臺及水下儲油研究[J];海洋技術(shù);2010年04期

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本文編號：1451282