發(fā)布時間：2019-04-09 21:03

【摘要】：為使得整個機械蒸汽再壓縮(MVR)蒸發(fā)系統(tǒng)的穩(wěn)定性、節(jié)能性更好,借助Aspen Plus軟件學習版,根據(jù)MVR運行原理,構(gòu)建了MVR性能分析模型,并通過改變MVR節(jié)點的參數(shù),模擬研究了蒸發(fā)量、補充新鮮蒸汽量與進料溫度、蒸發(fā)壓強的關(guān)系;蒸發(fā)量、沸點與進料濃度(NaCl質(zhì)量分數(shù))、蒸發(fā)壓強的關(guān)系;蒸發(fā)器換熱量、COP與蒸發(fā)壓強、壓縮機壓力升的關(guān)系。通過分析模擬結(jié)果得出:適當減小壓縮比,可以提高蒸發(fā)系統(tǒng)的COP;原料液應(yīng)該加熱到沸點后,再進入蒸發(fā)器中進行換熱;從節(jié)能效果看,MVR蒸發(fā)系統(tǒng)更適合在低溫低壓下運行;在蒸發(fā)前,應(yīng)對濃度較大的原料液進行適當?shù)南♂尅?br/>[Abstract]:In order to improve the stability and energy saving of the whole mechanical steam recompression (MVR) evaporation system, with the help of Aspen Plus software learning version, according to the operation principle of MVR, the performance analysis model of MVR is constructed, and the parameters of MVR node are changed by changing the parameters of MVR node. The relationship between evaporation volume, fresh steam quantity and feed temperature and evaporation pressure was studied by simulation. The relationship between evaporation volume, boiling point and feed concentration (NaCl mass fraction), evaporative pressure, evaporator heat transfer, COP and evaporative pressure, compressor pressure rise. The simulation results show that: if the compression ratio is reduced properly, the COP; feed liquid of evaporation system should be heated to boiling point and then put into the evaporator for heat transfer; From the energy saving effect, MVR evaporation system is more suitable to operate at low temperature and low pressure, and should be diluted properly before evaporation.
【作者單位】： 南京工業(yè)大學生物與制藥工程學院;南京匯科生物工程設(shè)備有限公司;南京工業(yè)大學化學與分子工程學院;
【分類號】：TH111

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1 石向陽;機械式蒸汽再壓縮系統(tǒng)原液蒸發(fā)的數(shù)值分析及性能研究[D];武漢工程大學;2015年

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