论文部分内容阅读
在对操作流化速度进行冷态实验以及流化床温度稳定性进行测试的基础上,研制了新型流化床反应器,并使用玉米秸秆为原料,探究了热烟气气氛下快速热解制取生物油的最佳反应温度以及床料。在最佳热解条件下,对糠醛废弃物、木糖废弃物以及海藻进行了实验研究,得到了各产物产率,并对得到的生物油进行了物理特性分析。结果显示,在最佳操作流速下,当温度为500℃时使用白云石为床料可以获得最大生物油产率。4种原料中玉米秸秆的生物油产率最高,达到42.3 wt%。在最佳热解条件下获得了4种物料不同含量的重油和轻质油,其中重油的物理特性差别很小,重油的热值比轻质油的热值高很多。不可冷凝气的高位热值是6.5-8.5 MJ/m3,因此不可冷凝气体可以作为一种燃料气被加以利用。
Based on the test of the fluidization speed in cold state and the temperature stability of the fluidized bed, a novel fluidized bed reactor was developed. Using corn stalks as raw materials, the rapid pyrolysis of hot flue gas Take the best bio-oil reaction temperature and bed material. Under optimum pyrolysis conditions, furfural waste, xylose waste and seaweed were studied experimentally, the yield of each product was obtained, and the physical properties of the obtained bio-oil were analyzed. The results show that at the optimum operating flow rate, the maximum bio-oil yield can be obtained using dolomite as bedding material at a temperature of 500 ° C. Among the four kinds of raw materials, corn stover produced the highest bio-oil yield, reaching 42.3 wt%. Four kinds of heavy oil and light oil with different contents were obtained under the optimal pyrolysis conditions, in which the difference of the physical properties of the heavy oil was very small. The heat value of the heavy oil was much higher than that of the light oil. Non-condensable gases have a high calorific value of 6.5-8.5 MJ / m3, so non-condensable gases can be utilized as a fuel gas.