玉米秸秆微波热解研究

Study on microwave pyrolysis of corn straw

为了研究玉米秸秆形成可再生能源,通过热解可转化为液体燃料—生物油,利用微波加热,考察了玉米秸秆热解制备生物油的情况.结果表明：玉米秸秆的影响因素很多,包括微波功率、热解温度、时间、加料量、添加剂等;最优工艺条件为：当热解温度500℃、处理量0.3 kg/kW、热解时间15 min、堆密度大于0.40 kg/m3、碳的添加量为秸秆的5%~10%时,生物油产率最大,达到56%.

As a renewable energy resource,corn stalks can be converted into liquid fuel by means of pyrolysis.Microwave pyrolysis of corn stalks was investigated to produce bio-oil.The results showed that microwave pyrolysis of corn straw was influenced by many factors such as microwave power,temperature,heating time,bulk density of biomass,and a ratio of material weight per kilowatt of microwave power.The process was optimized that 500 ℃ of pyrolysis temperature,a ratio of 0.3 kg of corn straw per kilowatt of microwave power,5 to 10 percent of carbon additive of the sample can make the yield of bio-oil to reach 56%.