ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

From the point of developing a new approach for the disposal of tar derived from biomass gasification, microwave-assisted tar cracking and reforming were performed over a biomass-derived char, with toluene as a model compound of tar aromatic substances. And the reaction rules, production distribution and changes of biomass char in process of toluene cracking and reforming were studied. The results indicated that biomass char had a catalytic effect on toluene cracking, and it was approved that microwave heating could favor toluene cracking. By analyzing the results, it was observed that toluene conversion and hydrogen selectivity were directly correlated to bed temperature in cracking reaction. Toluene cracking was optimized at 750℃, and the greatest toluene conversion and hydrogen selectivity were obtained, which were 92.77% and 91.94%, respectively. Afterwards, changes in toluene conversion and hydrogen selectivity were insignificant. It was further revealed that the introduction of CO2 could reform toluene into syngas production. At 700℃, the highest conversion rate of 92.03% was reached at CO2 flow rate of 80 mL/min, accompanied by a maximal syngas yiled rate of 91.30%. And increasing CO2 flow rate decreased the ratio of H2 to CO dramatically. The lowest ratio of 0.22 was obtained at CO2 flow rate of 120 mL/mm. The introduction of CO2 also brought about a loss of carbon in biomass char. And carbon loss was maximized to 5.42% at 700℃. At the same time, the depleted carbon was further converted into additional syngas production, which provided the highest contribution of 15.40% for total syngas production. Finally, it was demonstrated that an excess of CO2 could slow down the negative effect of carbon deposition on toluene conversion.