CAJ | 학술논문

采用响应面法优化水稻秸秆炭化工艺条件. 在单因素实验基础上,选择热解温度、升温速率和保温时间为随机因子,进行3 因素3 水平的Box-Behnken 中心组合设计,采用响应面法分析3 个因素对水稻秸秆产炭率的影响,并建立产炭率的二次多项式数学模型. 结果表明:水稻秸秆炭化时,最佳产炭条件为热解温度300℃、升温速率7.56℃/min、保温时间0.98h,在此条件下的产炭率为44.49%. 随机选择水稻秸秆炭化条件,所得实验值与理论值的偏差为4.3%左右,理论值与实验值较接近,说明回归方程拟合度较高,该优化方法可行.
채용향응면법우화수도갈간탄화공예조건. 재단인소실험기출상,선택열해온도、승온속솔화보온시간위수궤인자,진행3 인소3 수평적Box-Behnken 중심조합설계,채용향응면법분석3 개인소대수도갈간산탄솔적영향,병건립산탄솔적이차다항식수학모형. 결과표명:수도갈간탄화시,최가산탄조건위열해온도300℃、승온속솔7.56℃/min、보온시간0.98h,재차조건하적산탄솔위44.49%. 수궤선택수도갈간탄화조건,소득실험치여이론치적편차위4.3%좌우,이론치여실험치교접근,설명회귀방정의합도교고,해우화방법가행.
Response surface methodology ( RSM ) was applied to optimize the key parameters in order to increase the yield of solid products in the pyrolysis of rice straw .Based on single factor experiments , which were made to investigate the effects of heating rate, pyrolysis temperature, holding time on the yield of solid products, a three-factors-three-le vels Box-Behnken central composition experiments design were applied .A second order quadratic equation was es-tablished , and the applicability of the model and interaction involved factors on predicting the carbon yield was verified . The results showed that low temperature , low heating rate and short holding time is helpful to improve the yield of solid products in the pyrolysis process .The effects-order of the three factors on the yields of solid products were as follows:pyrolysis temperature , holding time , heating rate .The optimal levels for achieving the highest yield of solid products were obtained, including pyrolysis temperature of 300℃,heating rate of 7.56℃/min and holding time of 0.98h.The yield of solid products reached 44.49%under the optimal conditions .The results of random trials fitted well with the cal-culation values of the equations and the model was feasible .