發(fā)布時(shí)間：2018-05-15 20:35

  本文選題：機(jī)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(jī)械蒸汽再壓縮系統(tǒng)的熱力學(xué)模型,并對(duì)換熱器無(wú)相變瞬態(tài)傳熱分析的模型進(jìn)行了簡(jiǎn)化。在此基礎(chǔ)上,以加熱后的料液顯熱作為啟動(dòng)熱源,以穩(wěn)態(tài)計(jì)算數(shù)據(jù)為基礎(chǔ),利用迭代法對(duì)系統(tǒng)非穩(wěn)態(tài)運(yùn)行過(guò)程進(jìn)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(zhǎng)較快,當(dāng)換熱量達(dá)到蒸發(fā)器換熱的最大值時(shí),蒸汽流量出現(xiàn)明顯拐點(diǎn),并呈下降趨勢(shì)直至穩(wěn)態(tài);系統(tǒng)約在2 500s后達(dá)到穩(wěn)態(tài)運(yùn)行。壓縮機(jī)最大功率及最大進(jìn)氣量均出現(xiàn)在非穩(wěn)態(tài)運(yùn)行過(guò)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(xué)化學(xué)工程學(xué)院;
【基金】：國(guó)家科技支撐計(jì)劃項(xiàng)目(2013BAC12B01) 四川大學(xué)德陽(yáng)校市科技合作專項(xiàng)基金“頁(yè)巖氣鉆采污水處理撬”(HZYF201513)
【分類號(hào)】：TE93;X741
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本文編號(hào)：1893851