CAJ | 학술논문

通过在有无内构件（传热板和中心集气管）固定床反应器中研究不同水分含量煤的热解特性，考察了两反应器中煤料的升温特性、热解产物分布、焦油品质以及气体产物组成和半焦热值。结果表明，内构件可以强化传热和调节热解产物在反应器内的流动，相对无内构件反应器，有内构件反应器的反应时间缩短近一半。在有内构件反应器中，当煤水分增加，导致煤热解反应要求的时间延长，焦油中轻质组分（沸点低于360℃）含量明显升高，焦油收率先增加后降低，热解水和热解气产率升高，而无内构件反应器的热解产物无明显差异。当加热温度900℃时，煤水分从0.41%（本文中无特殊说明的均为质量分数）增加至11.68%，焦油产率从9.21%增长到10.74%；当煤水分增加到15.93%，焦油产量下降到10.26%。两反应器气体平均组成随水分增加的变化趋势相似，气体热值均随水分增加呈下降趋势。
통과재유무내구건（전열판화중심집기관）고정상반응기중연구불동수분함량매적열해특성，고찰료량반응기중매료적승온특성、열해산물분포、초유품질이급기체산물조성화반초열치。결과표명，내구건가이강화전열화조절열해산물재반응기내적류동，상대무내구건반응기，유내구건반응기적반응시간축단근일반。재유내구건반응기중，당매수분증가，도치매열해반응요구적시간연장，초유중경질조분（비점저우360℃）함량명현승고，초유수솔선증가후강저，열해수화열해기산솔승고，이무내구건반응기적열해산물무명현차이。당가열온도900℃시，매수분종0.41%（본문중무특수설명적균위질량분수）증가지11.68%，초유산솔종9.21%증장도10.74%；당매수분증가도15.93%，초유산량하강도10.26%。량반응기기체평균조성수수분증가적변화추세상사，기체열치균수수분증가정하강추세。
The effects of coal moisture on heating rate and product distribution for pyrolysis of coal in a fixed-bed reactor with or without internals were investigated. The results showed that the reaction time in the reactor without internals is approximately twice of the time in the reactor with internals. With utilization of internals to enhance heat transfer and regulate the pyrolysis gas flow direction inside the reactor, increasing the coal moisture content prolonged the time that required to heat up the coal at the bed center to the preset temperature and increased the light tar content, whereas the tar yield tended to first increase and then decrease and the yields of pyrolysis gas and water tended to increase. In contrast, there was not dramatic difference in the reactor without internals when varying the coal moisture. At a heating furnace temperature of 900℃, the increase of coal moisture from 0.41%to 11.68%(mass) increased the tar yield from 9.21%to 10.74%(mass) for the reactor with internals, but when the coal moisture content increased further to 15.93%(mass) the tar yield decreased to 10.26%(mass). The variation trend with coal moisture content in the average pyrolysis gas composition was similar for both reactors, and the higher heating value (HHV) became lower when the coal moisture increased.