【摘要】：采用法國(guó)Setaram公司Themys HP型高壓熱重儀對(duì)我國(guó)龍口油頁(yè)巖進(jìn)行不同壓力條件下的熱解實(shí)驗(yàn),利用產(chǎn)物釋放特性指數(shù),并通過(guò)分布活化能模型DAEM對(duì)不同壓力條件下的熱解反應(yīng)進(jìn)行動(dòng)力學(xué)分析。研究表明龍口油頁(yè)巖的熱解主要包括頁(yè)巖的脫水階段、有機(jī)質(zhì)熱解階段以及碳酸鹽及黏土礦物的分解階段;壓力的升高對(duì)于龍口油頁(yè)巖的熱解過(guò)程有明顯的影響,改變熱解產(chǎn)物的析出速率,產(chǎn)物釋放特性指數(shù)能很好地表征龍口油頁(yè)巖在壓力改變的條件下熱解過(guò)程中產(chǎn)物的析出特性,熱解壓力小范圍的升高(5bar)有利于揮發(fā)分的析出,過(guò)高的壓力不利于揮發(fā)分的快速析出。動(dòng)力學(xué)分析表明,熱解低溫階段反應(yīng)所需活化能在壓力升高的條件下呈現(xiàn)出先增大后減小的趨勢(shì),但明顯高于高溫段熱解活化能。適當(dāng)提高壓力有利于熱解反應(yīng)的進(jìn)行。
[Abstract]:The pyrolysis experiments of Longkou oil shale in China under different pressure conditions were carried out by using Themys HP high-pressure thermogravimeter of Setaram company of France, and the characteristic index of product release was used. The kinetic analysis of pyrolysis under different pressure conditions was carried out by distributed activation energy model (DAEM). The results show that the pyrolysis of Longkou oil shale mainly includes the dehydration stage of shale, the pyrolysis stage of organic matter and the decomposition stage of carbonate and clay minerals. The increase of pressure has an obvious effect on the pyrolysis process of Longkou oil shale. Changing the precipitation rate of pyrolytic products, the characteristic index of product release can well characterize the precipitation characteristics of the products in the pyrolysis process of Longkou oil shale under the condition of pressure change. The increase of pyrolysis pressure in a small range (5bar) is beneficial to the precipitation of volatile matter, but too high pressure is not conducive to the rapid precipitation of volatile matter. The kinetic analysis shows that the activation energy of pyrolysis at low temperature stage increases first and then decreases under the condition of increasing pressure, but it is obviously higher than the activation energy of pyrolysis at high temperature. Properly increasing the pressure is beneficial to the pyrolysis reaction.
【作者單位】： 東北電力大學(xué)能源與動(dòng)力工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51276034)
【分類(lèi)號(hào)】：TE662

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