發(fā)布時間：2018-05-15 20:35

  本文選題：機械蒸汽再壓縮 + 非穩(wěn)態(tài)�。� 參考：《石油與天然氣化工》2017年05期

【摘要】：建立了機械蒸汽再壓縮系統(tǒng)的熱力學模型,并對換熱器無相變瞬態(tài)傳熱分析的模型進行了簡化。在此基礎(chǔ)上,以加熱后的料液顯熱作為啟動熱源,以穩(wěn)態(tài)計算數(shù)據(jù)為基礎(chǔ),利用迭代法對系統(tǒng)非穩(wěn)態(tài)運行過程進行了模擬。結(jié)果表明:在閃蒸階段,系統(tǒng)內(nèi)蒸汽流量增長較快,當換熱量達到蒸發(fā)器換熱的最大值時,蒸汽流量出現(xiàn)明顯拐點,并呈下降趨勢直至穩(wěn)態(tài);系統(tǒng)約在2 500s后達到穩(wěn)態(tài)運行。壓縮機最大功率及最大進氣量均出現(xiàn)在非穩(wěn)態(tài)運行過程中,與穩(wěn)態(tài)值相比,分別高出41.89%和32.56%。
[Abstract]:The thermodynamic model of mechanical steam recompression system is established, and the model of transient heat transfer without phase change in heat exchanger is simplified. On the basis of this, the unsteady operation process of the system is simulated by iterative method based on the steady state calculation data, taking the heating liquid sensible heat as the starting heat source. The results show that the steam flow rate in the system increases rapidly in the flash stage. When the heat transfer reaches the maximum value of the evaporator, the steam flow appears an obvious inflection point and decreases until the steady state, and the system reaches steady operation after about 2 500 s. The maximum power and the maximum intake of the compressor appear in the process of unsteady operation, which are 41.89% and 32.56% higher than the steady-state value, respectively.
【作者單位】： 四川大學化學工程學院;
【基金】：國家科技支撐計劃項目(2013BAC12B01) 四川大學德陽校市科技合作專項基金“頁巖氣鉆采污水處理撬”(HZYF201513)
【分類號】：TE93;X741
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本文編號：1893851