2-CSTRs两相厌氧消化系统在不同乙醇回收率下的联合产能

以2-CSTRs(连续流搅拌釜式反应器)两相厌氧消化系统的能量转化率为主要研究对象,以氢气、乙醇及甲烷为目标产物,在不同有机负荷下,通过控制反应参数使产氢相反应器内部环境呈现乙醇型发酵状态,并将产氢相出水经回收乙醇后作为产甲烷相反应基质,研究在不同乙醇回收率下2-CSTRs两相厌氧消化系统产能效率.结果表明:当乙醇回收率在0~50%范围内时,系统产能率、能量转化率及基质降解率随乙醇回收率的增加而增加.当乙醇回收率控制在50%时系统可获得最佳运行结果,与未回收乙醇时相比,系统的日产能率平均高约32.63%,能量转化率平均高约17.53%,基质降解率平均高约12.85%.

Simultaneous biofuel production of 2-CSTRs anaerobic digestion system with different recovery rates of ethanol

With the energy conversion efficiency of 2-CSTRs (continuous stirred tank reactor) anaerobic digestion system as the study objectives, hydrogen, ethanol and methane as the target products, at different organic loading rates (OLRs), the ethanol-type fermentation was provided by controlling the available reaction parameters in hydrogen production phase, the treatment water of hydrogen production phase which was recovered ethanol served as the feed of methane production phase, and the energy conversion efficiency of the 2-CSTRs system were dug with different ethanol recovery rates (ERRs). The survey results indicated that energy conversion rate (εT), energy conversion yield (εY) and SDR essentially increased with increasing ERR of 0~50%. Compared with the regular anaerobic digestion system, εT, εY and SDR of the system with ethanol recovery have increased by 32.63%, 17.53% and 12.85% , respectively, with the ERR of 50%.