CAJ | 학술논문

在间歇式高温高压反应釜中，以水、四氢萘、水-四氢萘混合溶剂为反应介质，研究了甘蔗渣直接液化制备生物油的工艺.调查了蔗渣/溶剂的固液比、液化温度、水-四氢萘混合溶剂中四氢萘含量、碱预处理对蔗渣液化效率的影响.研究结果表明，在液化温度200ц320℃范围内，单独使用水和四氢萘作为溶剂液化时最大转化率分别为68%和89%，最大液体产率分别为61%和70%，而且，水作为溶剂液化时，转化率随温度升高缓慢增加，而四氢萘液化时，在270ц280℃转化率急剧地增加(增加了30%)；当水-四氢萘混合溶剂中四氢萘含量大于50%时，蔗渣转化率均高于单独使用水或四氢萘液化，预示着水和四氢萘之间的协同作用；使用NaOH预处理蔗渣，大幅提高了以水和水-四氢萘混合溶剂为反应介质的转化率和液体产率.与蔗渣原料相比，液化产物显示了较低的氧含量(20.96%ц27.24%)与较高的热值(27.65ц30.82 MJ/kg)，达到了对蔗渣脱氧和提高热值的目的.
재간헐식고온고압반응부중，이수、사경내、수-사경내혼합용제위반응개질，연구료감자사직접액화제비생물유적공예.조사료자사/용제적고액비、액화온도、수-사경내혼합용제중사경내함량、감예처리대자사액화효솔적영향.연구결과표명，재액화온도200ц320℃범위내，단독사용수화사경내작위용제액화시최대전화솔분별위68%화89%，최대액체산솔분별위61%화70%，이차，수작위용제액화시，전화솔수온도승고완만증가，이사경내액화시，재270ц280℃전화솔급극지증가(증가료30%)；당수-사경내혼합용제중사경내함량대우50%시，자사전화솔균고우단독사용수혹사경내액화，예시착수화사경내지간적협동작용；사용NaOH예처리자사，대폭제고료이수화수-사경내혼합용제위반응개질적전화솔화액체산솔.여자사원료상비，액화산물현시료교저적양함량(20.96%ц27.24%)여교고적열치(27.65ц30.82 MJ/kg)，체도료대자사탈양화제고열치적목적.
Direct liquefactions of bagasse with water, tetralin and water-tetralin ( W-T) mixture as medium were investigated in a batch-type autoclave. The effects of mass ratio of bagasse to solvent, temperature, tetralin content in W-T mixtures and pretreatment of bagasse with NaOH,on the lique-faction efficiency were studied. It was found that when liquefactions of bagasse were performed from 200ц320 ℃, the highest conversion was 68% and 89%, and the highest liquid yield was 61% and 70% for water and tetralin as medium, respectively. In addition, conversion with water as medium increased gradually with increasing temperature, while conversion with tetralin as medium increased significantly ( by 30%) at 270 ц280 ℃; When the content of tetralin in W-T mixtures was over 50 wt%, higher conversion was obtained with W-T mixtures as medium than with water or tetralin, indicating the existence of cooperative action between water and tetralin. Pretreatment of bagasse with NaOH improved greatly the conversion and liquid yield of bagasse with water and W-T mixtures as medium. Lower oxygen contents(20. 96%ц27. 24%) and higher heating values(32. 0ц34. 7 MJ/kg) in product oils demonstrated the effect of deoxygenation by present liquefaction process.