论文部分内容阅读
利用Aspen Plus软件对生物质(玉米秸秆,杉木)的高温蒸汽/空气气化过程进行了模拟研究,模拟值与实验值吻合较好,并利用该模型研究了气化剂预热温度,水蒸汽通入量(S/B)及空气当量系数(ER)对气化产气组分、碳转化率及产气热值等气化指标的影响。研究结果表明:提高气化剂预热温度有利于提高产气中H_2和CO含量、产气热值和碳转化率;增大S/B值可提高H_2含量和碳转化率,降低CO含量,产气热值先增加后减少,当S/B等于1.5时产气热值存在最佳值;增大ER值有利于提高碳转化率,但对H_2含量及产气热值具有负面作用,CO含量先增加后减少,CO_2含量先减少后增加,且当ER值为0.15时CO含量达到最大值,CO_2含量达到最小值。
The Aspen Plus software was used to simulate the high temperature steam / air gasification process of biomass (corn stover and Chinese fir). The simulated values agree well with the experimental data. The gasification preheating temperature, water vapor (S / B) and air equivalence coefficient (ER) on gasification parameters of gasification gas components, carbon conversion rate and gas generation calorific value. The results show that increasing the preheating temperature of the gasification agent is beneficial to increase the contents of H 2 and CO, the calorific value of gas production and the carbon conversion rate. Increasing the S / B ratio can increase the H 2 content and the carbon conversion rate, The gas production calorific value first increased and then decreased. When S / B was equal to 1.5, the gas production calorific value had the best value. Increasing the ER value was beneficial to increase the carbon conversion rate, but had a negative effect on the H 2 content and the gas production calorific value. The CO The content of CO 2 increased firstly and then decreased, while the content of CO 2 first decreased and then increased. When the ER value was 0.15, the content of CO reached its maximum and the CO 2 content reached the minimum.