CAJ | 학술논문

在干式稀酸预处理的反应器中采用螺带桨搅拌器，对秸秆预处理体系进行混合。在带有螺带式搅拌的预处理过程中，在质量分数2.0％和2.5％的H2 SO4用量条件下，预处理后72 h秸秆的酶解糖化得率分别为77.55％和87.11％，比静态预处理得到的得率分别增长了7.6％和2.4％，抑制物的生成显著降低。通过计算流体力学方法验证，螺带桨搅拌器可以有效地改善玉米秸秆在稀酸预处理过程中的蒸汽和秸秆两相的混合情况。
재간식희산예처리적반응기중채용라대장교반기，대갈간예처리체계진행혼합。재대유라대식교반적예처리과정중，재질량분수2.0％화2.5％적H2 SO4용량조건하，예처리후72 h갈간적매해당화득솔분별위77.55％화87.11％，비정태예처리득도적득솔분별증장료7.6％화2.4％，억제물적생성현저강저。통과계산류체역학방법험증，라대장교반기가이유효지개선옥미갈간재희산예처리과정중적증기화갈간량상적혼합정황。
A helical ribbon stirrer was equipped into the reactor to test if the mixing problem could be solved.The cellulose conversions after 72 hours enzymatic hydrolysis of 77.55% and 87.11% in the pretreatment with agitation were obtained when the sulfuric acid dosage reached 2.0%, and 2.5%( m/m) ,respectively,it increased by 7.6% and 2.4% compared with those in statical pretreatment.The level of inhibitors generated from the pretreatment remarkably decreased.CFD was applied to illustrate the improvement of the pretreatment with agitation.CFD modeling showed that the mixing of the steam and corn stover improved with the agitation speed increased.