【摘要】：采用兩段反應器對油頁巖熱解初級揮發(fā)分進行二次催化反應特性研究,考察了第2段反應器內(nèi)不同的催化載體、反應氣氛與停留時間對油氣收率及品質(zhì)的影響。結(jié)果表明,在考察的停留時間范圍內(nèi)頁巖灰具有相對適中的催化活性來調(diào)控熱解揮發(fā)分產(chǎn)物的二次反應,水蒸氣氣氛能夠進一步提高熱解油收率約5%,并能夠在一定程度上抑制裂解氣體中C_2~C_3組分的生成。頁巖灰作為催化載體能夠轉(zhuǎn)化熱解油中VGO(餾程350℃)等重質(zhì)組分,隨停留時間增加油品餾程向輕組分轉(zhuǎn)移。油品組分GC-MS結(jié)果表明,較短停留時間內(nèi)(3 s),水蒸氣添加能夠有效抑制熱解油中脂肪烴類的過度裂解,與氮氣相比提高汽柴油餾分含量20%以上。過長的停留時間(3~5 s)會造成VGO等餾分縮聚生成焦炭,從而大幅降低熱解油收率。
[Abstract]:A two-stage reactor was used to study the secondary catalytic reaction characteristics of primary volatile compounds from oil shale pyrolysis. The effects of different catalytic carriers, reaction atmosphere and residence time on the oil and gas yield and quality in the second stage reactor were investigated. The results show that shale ash has relatively moderate catalytic activity to regulate the secondary reaction of pyrolytic volatile products in the range of residence time. The steam atmosphere can further improve the pyrolytic oil yield of about 5% and to some extent inhibit the formation of C_2~C_3 components in the pyrolysis gas. Shale ash can be used as catalyst carrier to transform VGO (distillation range 350 鈩，

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