本文選題：反滲透海水淡化 + 能量回收裝置　； 參考：《天津大學》2016年碩士論文

【摘要】：旋轉(zhuǎn)式能量回收裝置(RERD)作為反滲透海水淡化系統(tǒng)的主要節(jié)能設(shè)備,對于降低系統(tǒng)能耗和產(chǎn)水成本具有重要意義。改善和提升旋轉(zhuǎn)式能量回收裝置的密封性能是實現(xiàn)裝置高效率運行的關(guān)鍵,也是此類型裝置研究的重點方向。本文設(shè)計開發(fā)了一套處理量為15m3/h新型外驅(qū)旋轉(zhuǎn)式能量回收裝置,并建立了滿足其性能評測要求的一套全工藝反滲透海水淡化系統(tǒng)。本文采用上下兩個PEEK平面端盤、不銹鋼轉(zhuǎn)子和套筒組成能量回收裝置核心轉(zhuǎn)動單元,在裝置上、下端盤與轉(zhuǎn)子端面間總間隙為0.04mm條件下,對新設(shè)計的外驅(qū)旋轉(zhuǎn)式能量回收裝置進行了密封性能測試。結(jié)果表明:在操作壓力為6.0MPa,裝置的鹽水流通量為13m3/h時,裝置的靜態(tài)泄漏量僅為0.105m3/h;相同鹽水處理量及操作壓力條件下,轉(zhuǎn)速為500rpm時,裝置的動態(tài)泄漏量為0.57m3/h,能量回收效率為91.2%。為提高裝置的能量回收效率,本文將靜壓支承技術(shù)應用到裝置結(jié)構(gòu)設(shè)計中,通過在原有的平面端盤上增設(shè)靜壓引流孔和環(huán)形槽,構(gòu)建了新型靜壓支承端盤結(jié)構(gòu)。在相同的操作壓力、裝置處理量和端面間隙下,比較分析了平面端盤和支承端盤對裝置性能的影響規(guī)律。結(jié)果表明:在操作壓力為4.7MPa,裝置的處理量為13m3/h,裝置的轉(zhuǎn)子轉(zhuǎn)速為500rpm條件下,含有靜壓支承端盤的裝置的泄漏量僅為0.30m3/h,較平面端面降低了60%;能量回收效率為93.2%,較平面端盤裝置提高了2.2%。論文研究了裝置的混合度與轉(zhuǎn)子轉(zhuǎn)速和裝置處理量間的變化關(guān)系。結(jié)果表明:恒定操作壓力和裝置的處理量時,裝置的混合度隨轉(zhuǎn)子轉(zhuǎn)速的增大而降低;當裝置處理量為9m3/h時,轉(zhuǎn)子轉(zhuǎn)速從300rpm升高到500rpm,裝置的混合度從28.7%降低到16.5%。恒定操作壓力和裝置的轉(zhuǎn)子轉(zhuǎn)速,裝置的混合度隨著裝置處理量的增大而增大;當裝置的轉(zhuǎn)子轉(zhuǎn)速為500rpm時,裝置的處理量從9m3/h逐漸增大到13m3/h時,裝置的混合度從13%升高到16.5%。最后,對RERD裝置和反滲透系統(tǒng)耦合運行穩(wěn)定性進行了測試評價。結(jié)果表明:當裝置的處理量為16m3/h、操作壓力為6.0MPa和裝置轉(zhuǎn)子轉(zhuǎn)速500rpm時,進出RERD裝置的四股流體的流量和壓力波動較小,高壓流體壓力損失為0.132MPa,低壓流體壓力損失為0.107MPa,裝置的能量回收效率達到92.5%。
[Abstract]:As the main energy saving equipment of reverse osmosis seawater desalination system, rotary energy recovery device (RERD) is of great significance to reduce the energy consumption and water production cost of the system. Improving and improving the sealing performance of rotary energy recovery device is the key to realize the high efficiency operation of the device, and is also the key research direction of this type of device. In this paper, a new type of 15m3/h external drive rotary energy recovery device is designed and developed, and a full-process reverse osmosis seawater desalination system is established to meet the requirements of performance evaluation. In this paper, the core rotation unit of the energy recovery device is composed of two peek flat end disks, stainless steel rotor and sleeve. On the device, the total clearance between the lower end disk and the rotor end surface is 0.04mm. The sealing performance of the newly designed external drive rotary energy recovery device is tested. The results show that when the operating pressure is 6.0 MPA and the brine flux is 13m3/h, the static leakage rate is only 0.105 m3 / h, and the dynamic leakage rate is 0.57 m3 / h and the energy recovery efficiency is 91.2% when the rotating speed is 500rpm under the same brine treatment capacity and operating pressure. In order to improve the energy recovery efficiency of the device, the static pressure supporting technology is applied to the structure design of the device. A new type of static pressure supporting end disk structure is constructed by adding static pressure drainage holes and annular grooves to the original plane end disk. Under the same operating pressure, processing capacity and end clearance, the effects of the plane end disk and the supporting end disk on the performance of the device are compared and analyzed. The results show that when the operating pressure is 4.7 MPA, the processing capacity of the device is 13 m3 / h, and the rotor speed of the device is 500rpm, The leakage rate of the device with static pressure supporting end disk is only 0.30 m3 / h, which is 60 lower than that of the plane end face, and the energy recovery efficiency is 93.22.The energy recovery efficiency is 2.2% higher than that of the plane end disk device. The relationship between the mixing degree of the device and the rotor speed and the handling capacity of the device is studied in this paper. The results show that the mixing degree of the device decreases with the increase of rotor speed when the operating pressure and the handling capacity of the device are constant, and the rotor speed increases from 300rpm to 500rpm and the mixing degree decreases from 28.7% to 16.5% when the handling capacity of the unit is 9m3/h. At constant operating pressure and rotor speed, the mixing degree of the device increases with the increase of the processing capacity of the device, and when the rotor speed of the device is 500rpm, the handling capacity of the device increases from 9m3/h to 13m3/h, and the mixing degree of the device increases from 13% to 16.5%. Finally, the stability of RERD and reverse osmosis system is tested and evaluated. The results show that the flow rate and pressure fluctuation of four strands of fluid in and out of RERD are relatively small when the processing capacity is 16m3 / h, the operating pressure is 6.0MPa and the rotor speed is 500rpm. The pressure loss of high pressure fluid is 0.132 MPa and the pressure loss of low pressure fluid is 0.107 MPA. The energy recovery efficiency of the device is 92.5 MPA.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：P747

【參考文獻】

相關(guān)期刊論文 前10條

1 侯立安;張雅琴;;海水淡化反滲透膜組件系統(tǒng)的研究現(xiàn)狀[J];水處理技術(shù);2015年10期

2 周棟;傅寅翼;朱麗靜;郭志毅;劉富;薛立新;;納濾預處理反滲透海水淡化研究進展[J];膜科學與技術(shù);2015年03期

3 劉中良;劉寧;李艷霞;韓冰;武洪強;;反滲透海水淡化壓力能回收裝置進展[J];北京工業(yè)大學學報;2014年09期

4 查雁鵬;任瑞文;李挺璇;陳遠玲;;活塞式海水淡化能量回收裝置的研究和應用現(xiàn)狀[J];裝備制造技術(shù);2014年05期

5 韓松;王越;許恩樂;孫揚平;徐世昌;王世昌;;水力驅(qū)動轉(zhuǎn)子式能量回收裝置啟動特性研究[J];化學工業(yè)與工程;2014年02期

6 程百花;王越;許恩樂;孫揚平;徐世昌;王世昌;;旋轉(zhuǎn)式能量回收裝置的啟動與運行特性[J];化工進展;2013年09期

7 吳水波;閆玉蓮;王琪;李兆魁;;基于等壓式能量回收裝置的反滲透淡化系統(tǒng)模型[J];中國給水排水;2012年23期

8 王振興;王鶴立;李向全;侯新偉;劉玲霞;;混凝沉淀用于海水淡化預處理的工程試驗研究[J];水處理技術(shù);2012年10期

9 張金鑫;王越;楊勇君;程百花;徐世昌;王世昌;;反滲透海水淡化轉(zhuǎn)子式壓力交換器運行特性研究[J];化學工業(yè)與工程;2012年05期

10 彭冠宇;孫雯;;反滲透海水淡化技術(shù)研究進展[J];廣州化工;2012年05期

相關(guān)碩士學位論文 前2條

1 牛曉陽;液壓缸靜壓支承導向套性能研究[D];武漢科技大學;2014年

2 權(quán)好;液體靜壓支承系統(tǒng)的動態(tài)性能研究[D];北京工業(yè)大學;2012年

，

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