Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, Iran.
School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China.
J Environ Manage. 2019 Nov 15;250:109467. doi: 10.1016/j.jenvman.2019.109467. Epub 2019 Aug 28.
This study investigated the gasification of wood, weed, plastic, tire, carton and their mixtures using zeolite (A4 type) as a catalyst, with the purpose of investigating the potential interactions of the various feedstocks during gasification. The co-gasification of the mixed feedstock led to the occurrences of the cross-interactions, which substantially impacted the distribution of the products in gasification. During the co-gasification, the pyrolysis/gasification of the different feedstocks produced the reaction intermediates with varied structures that interacted with each other and with the char formed from the different feedstock. The interaction could promote the gasification of the tarry compounds into gaseous products, which could also promote the gasification of the char to lower the char yields. Further to this, the cross-polymerisation or cracking of the varied reaction intermediates also took place during the co-gasification, leading to the formation of more coke deposits on catalyst. The co-gasification of the mixed feedstocks significantly impacted the reaction network, impacting the formation of gases, tar, char and the coke on catalysts, originating from the cross-interaction among the reaction intermediates derived from the pyrolysis/gasification of the various feedstocks.
本研究使用沸石（A4 型）作为催化剂，对木材、杂草、塑料、轮胎、纸盒及其混合物进行气化研究，目的是研究气化过程中各种原料之间的潜在相互作用。混合原料的共气化导致了交叉相互作用的发生，这对气化过程中产物的分布产生了重大影响。在共气化过程中，不同原料的热解/气化产生了具有不同结构的反应中间体，它们相互作用并与不同原料形成的焦炭相互作用。这种相互作用可以促进焦油化合物转化为气态产物的气化，也可以促进焦炭的气化，降低焦炭的产率。此外，在共气化过程中，不同反应中间体之间还发生了交叉聚合或裂解，导致催化剂上形成更多的焦炭沉积物。混合原料的共气化显著影响反应网络，影响源自各种原料热解/气化产生的反应中间体之间的交叉相互作用的气体、焦油、焦炭和催化剂上焦炭的形成。
