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Influence of additives on lignin agglomeration and pyrolysis behavior

机译：添加剂对木质素团聚和热解行为的影响

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摘要

During biomass pyrolysis, lignin agglomeration causes serious problems for lignin thermochemical conversion, including feeding clogging, reactor blocking, etc. To inhibit the agglomeration, the influence of 11 variant mineral additives (strong base, medium base and amphoteric compound) was investigated during lignin pyrolysis process. It was found that Mg(OH)(2) and Ca(OH)(2) adding are very effective, and they could inhibit the agglomeration of lignin particles and formed powdered char instead of hard-shelled char of raw lignin pyrolysis. Furthermore, the influence of Mg(OH)(2) and Ca(OH)(2) additives on pyrolytic products were investigated. It was found that they all promoted the formation of CO2, but Mg(OH)(2) additive is strongly favorable for catechol phenols evolving, while Ca(OH)(2) showed positive influence on the formation of OH functional group in solid biochar, but reduced the formation of guaiacol phenol in liquid oil. It is great for the utilization of lignin and biomass.
机译：在生物质热解过程中，木质素的团聚会严重影响木质素的热化学转化，包括进料堵塞，反应器堵塞等。为抑制团聚，研究了木质素热解过程中11种变体矿物添加剂（强碱，中碱和两性化合物）的影响。处理。发现添加Mg（OH）（2）和Ca（OH）（2）非常有效，它们可以抑制木质素颗粒的团聚并形成粉末状炭，而不是原始木质素热解的硬壳炭。此外，研究了Mg（OH）（2）和Ca（OH）（2）添加剂对热解产物的影响。发现它们都促进了CO2的形成，但Mg（OH）（2）添加剂强烈促进儿茶酚的释放，而Ca（OH）（2）对固体生物炭中OH官能团的形成具有积极影响。 ，但减少了液体油中愈创木酚酚的形成。它对于木质素和生物质的利用非常有用。

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