木屑热解气化合成气释放规律研究  

Release Law of Syngas from Wood Chip Pyrolysis and Gasification

作　　者：苏登轲 李季硕 许开立[1] 王炳辰 SU Dengke;LI Jishuo;XU Kaili;WANG Bingchen(School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,Liaoning,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《能源与节能》2025年第1期31-34,共4页Energy and Energy Conservation

基　　金：辽宁省自然科学基金联合基金(2023-BSBA-106);国家自然科学基金项目(52004055)。

摘　　要：为替代传统化石能源、减少碳排放、推动“碳达峰、碳中和”目标的实现,对林业废弃物在热解气化过程中的合成气释放规律进行了研究。以木屑为林业废弃物代表,通过管式炉实验系统分析温度、气氛、添加剂对木屑热解气化过程中合成气生成规律的影响。结果表明,热解气化产气反应主要发生在温度400℃左右,当温度为500℃时有利于产生CO,而高温时H_(2)产气占比较高,有利于制备富氢合成气。体积分数80%的N_(2)和体积分数20%的CO_(2)的混合氛围与纯N_(2)相比,能显著提高CO的产量,而对CH_(4)产量的提升作用则相对有限。添加剂K_(2)CO_(3)对木屑热解气化产气反应有显著的催化作用,能促进CO、 H_(2)等可燃气体的生成。In order to replace traditional fossil energy,reduce carbon emissions,and promote the realization of the goals of"carbon peaking and carbon neutrality",the synthesis gas release law of forestry waste in the pyrolysis and gasification process was studied.Taking sawdust as the representative of forestry waste,the effects of temperature,atmosphere and additives on the synthesis gas generation in the process of woodchip pyrolysis and gasification were analyzed by the tube furnace experimental system.The results show that the reaction of pyrolysis gasification is mainly occurs at temperature about 400℃.When the temperature is 500℃,it is conducive to the production of CO and the proportion of H_(2) gas production is relatively high at high temperature,which is conducive to the preparation of hydrogen-rich syngas.Compared with pure N_(2),the mixed atmosphere of 80% volume fraction N_(2) and 20% volume fraction CO_(2) can significantly increase the CO production,but the increase in CH_(4) production is relatively limited.The additive K_(2)CO_(3) has a significant catalytic effect on the pyrolysis and gasification of wood chips,and can promote the formation of combustible gases such as CO and H_(2).

关 键 词：木屑热解气化 合成气 释放规律 添加剂 

分 类 号：X72[环境科学与工程—环境工程]