Integrating continuous-stirred microwave pyrolysis with ex-situ catalytic upgrading for linear low-density polyethylene conversion: Effects of parameter conditions
Integrating continuous-stirred microwave pyrolysis with ex-situ catalytic upgrading for linear low-density polyethylene conversion: Effects of parameter conditions
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将连续搅拌微波热解与异位催化升级相结合进行线性低密度聚乙烯转化：参数条件的影响
DOI：
10.1016/j.jaap.2021.105213
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发表时间：
2021-08
影响因子：
6
通讯作者：
Wenguang Zhou
中科院分区：
文献类型：
--
作者：
Liangliang Fan;Zheyang Su;Jiabo Wu;Zhiguo Xiao;Pei Huang;Lei Liu;Wenguang Zhou
研制了连续搅拌微波热解（CSMP）反应器和无氧催化床，用于将线性低密度聚乙烯（LLDPE）转化为高档燃料。研究了催化剂与反应物比和投料速率对产物收率和化学选择性的影响。LLDPE的CSMP产生高达84.1 wt.%的由碳氢燃料组成的凝析产物。在HZSM-5原位催化过程的辅助下，观察到更多以汽油级烃（c5 - c12烃）为主的精制化学品。当催化剂与反应物比为15%，加料速率为6 g/min时，热值较高（45.23 MJ/kg）的凝析油对汽油级烃类的选择性最高（98.0%）。热解过程的主要气体产物为乙烯。加入HZSM-5后，丙烯和丙烷成为主要气体组分。阐述了LLDPE的转化途径主要是通过自由基热解机制和碳离子催化机制进行的。潜在净能增益从34.16 MJ/kg增加到48.91 MJ/kg，生长采食量从6 g/min增加到30 g/min。
A continuous-stirred microwave pyrolysis (CSMP) reactor coupled with anex-situcatalytic bed was developed for the conversion of linear low-density polyethylene (LLDPE) to high-grade fuels. Effects of catalyst-to-reactant ratio and feeding rate on product yield and chemical selectivity were studied. The CSMP of LLDPE produced up to 84.1 wt.% condensate product composed of hydrocarbon fuels. With the assistance of theex-situcatalytic process with HZSM-5, more refined chemicals dominated by gasoline-range hydrocarbons (C5–C12hydrocarbons) were observed. When the catalyst-to-reactant ratio was 15 % and the feeding rate was 6 g/min, the condensate oil with a high higher heating value (45.23 MJ/kg) showed the highest selectivity of gasoline-range hydrocarbons (98.0 %). The pyrolysis processes yielded ethylene as the main gas product. With the addition of HZSM-5, propylene and propane were the primary gas components. The plausible pathway for the conversion of LLDPE mainly proceeded through radical mechanism for pyrolysis and carbenium ion mechanism for catalysis was elaborated. The potential net energy gain increased from 34.16 MJ/kg to 48.91 MJ/kg with growing feeding rate from 6 g/min to 30 g/min.
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影响因子：
5.2
作者：
Corma, A;Orchillés, AV
通讯作者：
Orchillés, AV
影响因子：
5.3
作者：
T. N. Trinh;P. Jensen;Z. Sárossy;K. Dam‐Johansen;N. O. Knudsen;H. R. Sørensen;H. Egsgaard
通讯作者：
T. N. Trinh;P. Jensen;Z. Sárossy;K. Dam‐Johansen;N. O. Knudsen;H. R. Sørensen;H. Egsgaard
影响因子：
22.1
作者：
Castano, Pedro;Elordi, Gorka;Bilbao, Javier
通讯作者：
Bilbao, Javier
影响因子：
6
作者：
Li, XT;Grace, JR;Kim, JR
通讯作者：
Kim, JR
DOI：
10.1016/s0166-9834(00)82188-0
发表时间：
1990-03
期刊：
Applied Catalysis
影响因子：
--
作者：
Ding-zhu Wang;Xue-Dong Lu;Xiuli Dou;Wen-bin Li;Caiyun Yang
通讯作者：
Ding-zhu Wang;Xue-Dong Lu;Xiuli Dou;Wen-bin Li;Caiyun Yang