Secondary cracking of volatile and its avoidance in infrared-heating pyrolysis reactor  

作　　者：Somprasong Siramard Jin-Hui Zhan Zhennan Han Shipei Xu Ondřej Mašek Guangwen Xu 

机构地区：[1]State Key Laboratory of Multi-phase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China [2]Institute of Industrial Chemistry and Energy Technology,Shenyang University of Chemical Technology,Shenyang 110142,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]UK Biochar Research Centre,School of Geosciences,Crew Building,The King's Buildings,University of Edinburgh,Edinburgh,EH93FF,UK

出　　处：《Carbon Resources Conversion》2018年第3期202-208,共7页碳资源转化（英文）

基　　金：the National Basic Research Program of China(2014CB744303);National Natural Science Foundation of China(91534125);CAS-TWAS President’s Fellowship for International PhD Students.

摘　　要：This study aims to compare the pyrolysis behavior of Huadian oil shale in two infrared heating fixed bed reactors with different directions of infrared beam.Our previous work has shown that fast pyrolysis of oil shale conducted in the shallow fixed bed infrared heating reactor(co-current)presented the massive secondary reactions,which lowered the shale oil production(Siramard et al.,2017).Conversely,the cross-current infrared achieved shale oil yields higher than the Fischer Assay oil yield(13.07 wt%of dry basis),such as 117.7%of the Fischer Assay yield at our realized highest heating rate of 7℃/s under a specified pyrolysis temperature of 550℃.The shale oil from the cross-current infrared heating reactor was obviously heavier than the oil obtained from the cocurrent heating reactor.Thus,the infrared cross heating evidently suppressed the secondary reactions toward volatile.Our realized shale oil yield could reach 13.67 wt%or 122.5%of the Fischer Assay yield under reducing pyrolysis pressure of 0.6 atm,indicating that lower pressure is also beneficial to the release of volatile and reduction of the secondary cracking reactions.This work shows essentially that the infrared cross heating provides an effective merge of the advantages from quick heating and minimization of secondary cracking reactions to enable the shale oil yields being higher than the Fischer Assay oil yield.

关 键 词：PYROLYSIS Secondary cracking VOLATILE Infrared heating Oil shale 

分 类 号：P61[天文地球—矿床学]