本文選題：軸流導(dǎo)葉式旋風(fēng)分離器 + 氣液分離�。� 參考：《北京交通大學(xué)》2016年碩士論文

【摘要】：在石化行業(yè)中,對(duì)開(kāi)采的油氣進(jìn)行凈化和分離,不僅可以提高油氣的開(kāi)發(fā)效率,而且可以減小對(duì)環(huán)境的污染。旋風(fēng)分離器作為油氣開(kāi)發(fā)工藝中最重要的分離設(shè)備,其性能優(yōu)劣關(guān)系到油氣的分離效果,對(duì)油氣的開(kāi)發(fā)利用具有重要的現(xiàn)實(shí)意義。但是,目前有大量正在應(yīng)用的旋風(fēng)分離器結(jié)構(gòu)陳舊,壓降較大,分離效率不理想。軸流導(dǎo)葉式旋風(fēng)分離器具有結(jié)構(gòu)簡(jiǎn)單、分離效率高、體積小、安裝操作方便等優(yōu)點(diǎn),已經(jīng)被廣泛地應(yīng)用于石油、化工、生物及環(huán)保等行業(yè)。本文重點(diǎn)研究了軸流導(dǎo)葉式旋風(fēng)分離器的葉片結(jié)構(gòu)和錐筒結(jié)構(gòu)對(duì)其氣液分離性能的影響,通過(guò)實(shí)驗(yàn)和數(shù)值模擬的方法研究了葉片個(gè)數(shù)、葉片高度、葉片圈數(shù)和錐筒斜角對(duì)旋風(fēng)分離器分離性能的影響情況。首先,探討了軸流導(dǎo)葉式旋風(fēng)分離器氣液分離機(jī)理和數(shù)值模擬計(jì)算方法。使用CAD軟件構(gòu)建幾何模型,利用Gambit軟件進(jìn)行網(wǎng)格劃分,運(yùn)用Fluent軟件模擬了分離器內(nèi)部的流場(chǎng),獲得不同進(jìn)氣速度和液滴粒徑下的壓力場(chǎng)、速度場(chǎng),并進(jìn)行相關(guān)分析。然后,根據(jù)流體力學(xué)相似理論搭建了實(shí)驗(yàn)平臺(tái),對(duì)軸流導(dǎo)葉式旋風(fēng)分離器進(jìn)行了壓降測(cè)試實(shí)驗(yàn)和效率測(cè)試實(shí)驗(yàn)。在實(shí)驗(yàn)中測(cè)定了旋風(fēng)分離器在不同進(jìn)氣速度情況下的壓降和不同液滴粒徑下的分離效率,對(duì)旋風(fēng)分離器的壓降特性和效率進(jìn)行研究,并與數(shù)值模擬結(jié)果進(jìn)行了對(duì)比,驗(yàn)證了模擬計(jì)算方法的合理性。最后,對(duì)不同葉片個(gè)數(shù)、葉片高度、葉片圈數(shù)和錐筒斜角的旋風(fēng)分離器內(nèi)的流場(chǎng)進(jìn)行數(shù)值模擬,獲得了旋風(fēng)分離器葉片結(jié)構(gòu)和錐筒結(jié)構(gòu)對(duì)分離器氣液分離性能的影響規(guī)律。結(jié)果表明:(1)在葉片個(gè)數(shù)為3、4、5、6、7、8范圍內(nèi),隨著葉片個(gè)數(shù)增加,分離效率逐漸降低,壓降平穩(wěn)下降;(2)在葉片高度為35、40、45、50、55、60mm范圍內(nèi),隨著葉片高度增大,分離效率降低,壓降平穩(wěn)下降;(3)在葉片圈數(shù)為0.15、0.20、0.25、0.30、0.35、0.40范圍內(nèi),隨著葉片圈數(shù)增加,分離效率先增大后略有減小,壓降逐漸增大;(4)在錐筒斜角為6、7、8、9、10、11、12度的范圍內(nèi),隨著錐筒斜角增大,分離效率先增大后減小,壓降逐漸增大。通過(guò)將模擬結(jié)果與實(shí)驗(yàn)結(jié)果進(jìn)行對(duì)比與分析,獲得了優(yōu)化結(jié)構(gòu)的軸流導(dǎo)葉式旋風(fēng)分離器,給出了葉片個(gè)數(shù)、葉片高度、葉片圈數(shù)和錐筒斜角的優(yōu)化參考建議,為生產(chǎn)實(shí)踐提供依據(jù)。
[Abstract]:In petrochemical industry, the purification and separation of oil and gas can not only improve the efficiency of oil and gas development, but also reduce the pollution to the environment.Cyclone separator as the most important separation equipment in oil and gas development process, its performance is related to the oil and gas separation effect, and has important practical significance for the development and utilization of oil and gas.However, there are a large number of cyclone separators in use, which are old in structure, large in pressure drop and unsatisfactory in separation efficiency.With the advantages of simple structure, high separation efficiency, small volume and convenient installation and operation, the axial flow guide vane cyclone separator has been widely used in petroleum, chemical, biological and environmental protection industries.In this paper, the influence of blade structure and cone structure on gas-liquid separation performance of axial flow guide vane cyclone separator is studied. The number of blades and blade height are studied by means of experiment and numerical simulation.The influence of the number of the blades and the angle of the cone on the separation performance of the cyclone separator.Firstly, the gas-liquid separation mechanism and numerical simulation method of axial guide vane cyclone separator are discussed.The geometry model is constructed by CAD software, the mesh is divided by Gambit software, the flow field inside the separator is simulated by Fluent software, the pressure field and velocity field under different inlet velocity and droplet diameter are obtained, and the correlation analysis is carried out.Then, based on the similarity theory of hydrodynamics, an experimental platform is built to test the pressure drop and efficiency of the axial flow guide vane cyclone separator.In the experiment, the pressure drop and the separation efficiency of the cyclone separator under different inlet velocity and different droplet size are measured. The pressure drop characteristics and efficiency of the cyclone separator are studied, and the results are compared with the numerical simulation results.The rationality of the simulation method is verified.Finally, the flow field in the cyclone separator with different blade number, blade height, blade circle number and inclined angle of cone tube is numerically simulated, and the influence of blade structure and cone tube structure on the gas-liquid separation performance of cyclone separator is obtained.The results showed that the separation efficiency decreased gradually with the increase of the number of leaves, and the pressure drop decreased steadily with the increase of the number of leaves.) the separation efficiency decreased with the increase of leaf height in the range of 35,4045,5055.60mm of leaf height, and the separation efficiency decreased with the increase of leaf height, and the separation efficiency decreased with the increase of leaf height, the results showed that the separation efficiency decreased with the increase of the leaf height, and the separation efficiency decreased with the increase of leaf height.The separation efficiency first increases and then decreases, and the pressure drop increases gradually.By comparing and analyzing the simulation results and the experimental results, the axial flow guide vane cyclone separator with optimized structure is obtained, and the optimum reference suggestions for the number of blades, blade height, number of blade circles and the angle of the cone tube are given.To provide the basis for production practice.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TQ051.8

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