本文選題：固-液攪拌　切入點(diǎn)：細(xì)長(zhǎng)固體　出處：《北京化工大學(xué)》2015年碩士論文

【摘要】：在工業(yè)固-液攪拌操作中,經(jīng)常出現(xiàn)一些纖維狀細(xì)長(zhǎng)固體附著與攪拌軸和攪拌葉輪的現(xiàn)象,這種細(xì)長(zhǎng)固體的附著增大了攪拌功率的消耗和設(shè)備的機(jī)械損傷,可能導(dǎo)致攪拌葉輪的振動(dòng)和過(guò)載。不但大大降低了攪拌效率,還使設(shè)備維護(hù)成本增加,造成生產(chǎn)效果大幅降低。根據(jù)以上的問(wèn)題,本文希望通過(guò)對(duì)傳統(tǒng)工業(yè)用槳CBY攪拌槳槳型的改進(jìn),改善細(xì)長(zhǎng)固體附著攪拌軸和攪拌葉輪問(wèn)題。本課題探究工業(yè)常用攪拌槳在固-液攪拌中的自清潔能力,以水、不同材質(zhì)的纖維狀細(xì)長(zhǎng)固體模擬工業(yè)固-液混合體系。根據(jù)現(xiàn)有的相關(guān)專利和文獻(xiàn),探究出一種新型的具有自清潔能力的兩葉圓盤攪拌槳。通過(guò)實(shí)驗(yàn)得出不同攪拌槳的功率準(zhǔn)數(shù)以及附著固體物料后功率的變化。并且以控制變量法探究槳型結(jié)構(gòu)、物性等變量對(duì)攪拌槳清潔能力的影響。并用CFD數(shù)值模擬自清潔攪拌槳的流場(chǎng)和流型圖,比較其與CBY攪拌槳的流場(chǎng)不同。通過(guò)實(shí)驗(yàn)數(shù)據(jù)的處理比對(duì),分析攪拌槳在細(xì)長(zhǎng)固體攪拌過(guò)程中各性能參數(shù)的改變,為實(shí)際工業(yè)固-液攪拌操作提供實(shí)驗(yàn)指導(dǎo)。
[Abstract]:In industrial solid-liquid stirring operation, some fibrous slender solids are often attached to the agitating shaft and impeller, which increase the consumption of mixing power and mechanical damage of equipment. May lead to vibration and overload of the impeller. Not only greatly reduce the agitation efficiency, but also increase the maintenance cost of equipment, resulting in a significant reduction in production efficiency. This paper hopes to improve the slender solid attachment and impeller by improving the CBY propeller type of traditional industrial propeller. This subject explores the self-cleaning ability of the conventional industrial agitator in solid-liquid agitation, using water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, etc. Fibrous slender solids simulating industrial solid-liquid mixtures of different materials. According to existing patents and literature, A new type of self-cleaning two-leaf disk agitator was developed. The power standard number of different impellers and the change of power after attachment to solid materials were obtained by experiments, and the propeller structure was investigated by controlling variable method. The effects of physical properties and other variables on the cleaning ability of the impeller are studied. The flow field and flow pattern of the self-cleaning impeller are simulated by CFD numerical simulation, and the flow field is compared with that of the CBY impeller. The experimental data are processed and compared. The change of the performance parameters of the propeller in the slender solid stirring process is analyzed, which provides experimental guidance for the practical industrial solid-liquid stirring operation.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ027.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

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本文編號(hào)：1692892