【摘要】：通過(guò)固定床反應(yīng)器,對(duì)4種金屬氧化物(Al_2O_3、MgO、CaO、Fe_2O_3)對(duì)油頁(yè)巖熱解所得油、氣產(chǎn)率及成分的影響進(jìn)行了研究。結(jié)果顯示,堿性CaO對(duì)油、水、氣、焦產(chǎn)率分布影響較為突出,可提高頁(yè)巖油與半焦產(chǎn)率,并降低熱解氣產(chǎn)率;而酸性較強(qiáng)的Al_2O_3可同時(shí)提高頁(yè)巖油、熱解氣和熱解水的產(chǎn)率,有利于促進(jìn)揮發(fā)分的析出;比較而言,MgO和Fe_2O_3的作用相對(duì)較弱。4種金屬氧化物均可提高熱解氣中H_2、CH_4和C2的產(chǎn)率;CaO作用下CO_2含量降低,而其他金屬氧化物對(duì)CO_2的產(chǎn)生有不同程度的促進(jìn)作用;Fe_2O_3可促進(jìn)H_2產(chǎn)生;Al_2O_3作用下CH_4含量有所增加。4種金屬氧化物均可促進(jìn)頁(yè)巖油中芳香烴的產(chǎn)生,并且CaO和MgO兩種堿土金屬氧化物作用下,短鏈(C6~C12)烷烴和烯烴含量均增加,而摻混Al_2O_3時(shí)頁(yè)巖油中僅短鏈(C6~C12)烷烴含量增加。對(duì)此機(jī)理進(jìn)行推測(cè)認(rèn)為,堿性CaO和MgO首先與以脂肪酸形式存在的有機(jī)質(zhì)進(jìn)行酸堿反應(yīng),得到脫羧活性更高的羧酸鹽,后者脫羧所得中間產(chǎn)物具有生成烷烴或烯烴兩條可能路徑,同時(shí)得到碳酸鹽;而在具有Lewis酸特征的Al_2O_3作用下,脫羧產(chǎn)物為CO_2,并同時(shí)得到飽和烴產(chǎn)物。
[Abstract]:The effects of four kinds of metal oxides (Al _ 2O _ 3 _ C _ 2O _ 3) on the oil, gas yield and composition obtained from pyrolysis of oil shale were studied in a fixed-bed reactor. The results showed that the distribution of oil, water, gas and coke yield was significantly affected by alkaline CaO, which could increase the yield of shale oil and semi-coke and decrease the yield of pyrolytic gas, while Al_2O_3 with strong acidity could increase the yield of shale oil, pyrolytic gas and pyrolytic water at the same time. In comparison, MgO and Fe_2O_3 can increase the yield of H2CH4 and C2 in pyrolytic gas and decrease the content of CO_2 under the action of Cao. However, other metal oxides can promote the production of CO_2 to some extent. Fetit _ 2O _ 3 can promote the production of aromatic hydrocarbons in shale oil by increasing the content of CH_4 in the presence of Al _ 2O _ 3, and the metal oxides can promote the production of aromatic hydrocarbons in shale oil. Under the action of CaO and MgO, the contents of C6~C12 alkanes and alkenes increased, but only C6~C12 alkanes in shale oil increased when Al_2O_3 was mixed. It is suggested that alkaline CaO and MgO first react with organic matter in the form of fatty acids to produce carboxylate with higher decarboxylation activity, and the intermediate products obtained from decarboxylation have two possible pathways to form alkanes or olefins. At the same time, carbonates were obtained, while under the action of Al_2O_3 with Lewis acid characteristics, the decarboxylation product was CO _ 2 and saturated hydrocarbon products were obtained simultaneously.
【作者單位】： 中國(guó)科學(xué)院過(guò)程工程研究所多相復(fù)雜系統(tǒng)國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué)中丹學(xué)院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃項(xiàng)目(2014CB744304) 國(guó)家自然科學(xué)基金面上項(xiàng)目(51476180)~~
【分類(lèi)號(hào)】：TE662

【相似文獻(xiàn)】

相關(guān)期刊論文 前5條

1 張磊;李小江;秦嶺;王光普;鄭智展;;金屬氧化物對(duì)劣質(zhì)煤摻混生活污泥混燒特性的影響[J];煤質(zhì)技術(shù);2014年03期

2 莊前鼎;;中國(guó)煤的灰熔點(diǎn)[J];燃料學(xué)報(bào);1957年02期

3 劉守軍,劉振宇,牛宏賢,朱珍平;金屬氧化物助劑對(duì)Cu/AC脫硫活性的影響[J];煤炭轉(zhuǎn)化;2000年04期

4 李芳,李文懷,王琴;高溫脫硫的研究進(jìn)展[J];煤炭轉(zhuǎn)化;1997年02期

5 董群;孫征;王德秋;高雪;梅春林;;金屬氧化物吸附劑深度脫硫性能研究[J];化學(xué)工程;2010年03期

相關(guān)碩士學(xué)位論文 前1條

1 劉富海;碳基金屬氧化物復(fù)合材料的制備及其在水煤氣變換反應(yīng)中的應(yīng)用[D];內(nèi)蒙古工業(yè)大學(xué);2015年

，

本文編號(hào)：2173252