CAJ | 학술논문

采用Fluent技术对25L内循环（IC）厌氧反应器内气液两相的流动过程进行了数值模拟，考察了提升管直径（0.006m、0.009m、0.012m、0.015m、0.018m、0.021m ）和反应器容积负荷[8.64kgCOD/(m3·d)、10.08kgCOD/(m3·d)、11.52kgCOD/(m3·d)、12.96kgCOD/(m3·d)、14.40kgCOD/(m3·d)、15.84kgCOD/(m3·d)]变化对其内循环量的影响。研究结果表明：①当反应器容积负荷为11.52kgCOD/(m3·d)、提升管直径为0.015m 时，该反应器内循环量达到最大值0.0079m3/h；②当提升管直径为0.015m、容积负荷为12.96kgCOD/(m3·d)时，该反应器内循环量增幅达到最大值9.28%，通过拟合获得了内循环量Y与产气量X间的经验关联式为Y=1.0514X+0.004。
채용Fluent기술대25L내순배（IC）염양반응기내기액량상적류동과정진행료수치모의，고찰료제승관직경（0.006m、0.009m、0.012m、0.015m、0.018m、0.021m ）화반응기용적부하[8.64kgCOD/(m3·d)、10.08kgCOD/(m3·d)、11.52kgCOD/(m3·d)、12.96kgCOD/(m3·d)、14.40kgCOD/(m3·d)、15.84kgCOD/(m3·d)]변화대기내순배량적영향。연구결과표명：①당반응기용적부하위11.52kgCOD/(m3·d)、제승관직경위0.015m 시，해반응기내순배량체도최대치0.0079m3/h；②당제승관직경위0.015m、용적부하위12.96kgCOD/(m3·d)시，해반응기내순배량증폭체도최대치9.28%，통과의합획득료내순배량Y여산기량X간적경험관련식위Y=1.0514X+0.004。
The process of gas-liquid two-phase flow of internal circulation anaerobic (IC) reactor (25L)was simulated by Fluent software. The influence of internal circulation flow rate with different riser pipe diameters (0.006m,0.009m,0.012m,0.015m,0.018m,0.021m)and volume loading rates [8.64kgCOD/(m3?d) , 10.08kgCOD/(m3?d) , 11.52kgCOD/(m3?d) , 12.96kgCOD/(m3?d) , 14.40 kgCOD/(m3·d) , 15.84kgCOD/(m3·d)] were investigated. When volume loading rate was 11.52kgCOD/(m3·d),and riser diameter was 0.015m,a maximum internal circulation flow rate of 0.0079m3/h was observed. When riser diameter was 0.015m,and volume loading rate was 12.96 kgCOD/(m3·d) , a maximum increase amplitude of 9.28% was observed. The correlation of Y=1.0514X+0.004 between internal circulation flow rate(Y) and biogas production(X) was obtained by fitting.