CAJ | 학술논문

在小型两段式固定床反应器中,对生物质热解气在高温煤焦层中的裂解反应特性进行了研究,重点考察了两段式热解中裂解温度、停留时间及煤焦特性对焦油裂解率、气体产率及成分的影响.结果表明,增加气体停留时间及裂解温度,都有利于促进生物质气中焦油裂解和气体产率提高.裂解温度对气体产率、组分及焦油裂解率影响更明显,高温促进H_2和CO的生成,1 000 ℃时H_2和CO的含量达到94.51%.当生物质热解气在煤焦中停留时间达到1.41 s后,气体中各组分变化趋于缓慢;不同热解条件所制得的煤焦对生物质气中焦油裂解效果不同,较低制焦温度和较短热解时间都有利于增加煤焦的反应活性,促进焦油分解为可燃气体.
재소형량단식고정상반응기중,대생물질열해기재고온매초층중적렬해반응특성진행료연구,중점고찰료량단식열해중렬해온도、정류시간급매초특성대초유렬해솔、기체산솔급성분적영향.결과표명,증가기체정류시간급렬해온도,도유리우촉진생물질기중초유렬해화기체산솔제고.렬해온도대기체산솔、조분급초유렬해솔영향경명현,고온촉진H_2화CO적생성,1 000 ℃시H_2화CO적함량체도94.51%.당생물질열해기재매초중정류시간체도1.41 s후,기체중각조분변화추우완만;불동열해조건소제득적매초대생물질기중초유렬해효과불동,교저제초온도화교단열해시간도유리우증가매초적반응활성,촉진초유분해위가연기체.
CT In a two-stage fixed bed, the cracking characteristics of tar derived from biomass pyrolysis in a high temperature coal char were studied. The results show that higher temperature is favor to the cracking of biomass tar. Both long residence time in char and the cracking temperature can decrease the tar yield with the increase of gas yield and H2 percentage. The prepare condition of char has influence on the gas yield and composition. Low pyrolysis temperature and short residence time can increase reactivity of coal char and are favor to the higher H2 and CO percentage.