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对玉米秸秆瞬时弹射式蒸汽爆破(Instant Catapult Steam Explosion,ICSE)预处理的效果进行了研究。通过与热喷放、碱堆沤2种预处理方法的对比,研究了ICSE预处理对玉米秸秆化学特性、微观结构、理化特性的改变机理。热重试验表明:在ICSE处理下,最大失重速率比热喷放及碱堆沤2种预处理方式分别高19.7%和21.2%,热解终了时残留物的质量分数比热喷放及碱堆沤2种预处理方式分别低31.8%和26.4%。显微试验表明:爆破过程彻底改变了玉米秸秆的组织结构,使其细胞壁完全断裂破碎。傅立叶红外光谱试验表明:ICSE样品谱线比其他样品谱线发生了更为明显位移,表明ICSE处理能够相对于其他预处理方式更加明显的改变玉米秸秆有机官能团。X射线衍射试验表明:ICSE比热喷放玉米秸秆结晶度下降了29.4%,比碱处理堆沤降低了26.1%,峰数减少,化学组成和结构变化最为明显。
Abstract：A comparative study on the effect of pretreatment of silage maize stalks by( Instant Catapult Steam Explosion,ICSE) was carried out. The mechanism of ICSE pretreatment on the corn stalks chemical characteristics,microstructure and physicochemical properties of ICSE was studied by comparison with the pretreatment methods of thermal spray and alkaline retting. TGA test shows that ICSE achieves a 19. 7% increase in maximum weight loss rate compared with boiling flow and a 21. 2% increase compared with alkali retting,a 31. 8% decrease in pyrolysis residue mass fraction compared with boiling flow and a 26. 4% decrease compared with alkali retting. FTIR test shows that ICSE sample's spectrum has much more obvious displacement than the other samples,indicating that ICSE could change more obviously in corn stalks organic functional groups. XRD test shows that ICSE achieves a 29. 4% decrease in degree of corn stalks polymerization compared with boiling flow and a 26. 1% decrease compared with alkali retting. ICSE has the biggest change in chemical structure.
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基本信息:
DOI：10.16445/j.cnki.1000-2340.2018.01.014
中图分类号:S216.2
引用信息:
[1]马鹏,冯冲,刘会丽,等.瞬时弹射式蒸汽爆破对玉米秸秆化学结构的影响[J].河南农业大学学报,2018,52(01):85-90.DOI:10.16445/j.cnki.1000-2340.2018.01.014.
基金信息:
河南省高等学校重点科研项目(17A630066)
2018-02-15
2018-02-15