Construction And Analysis Of Volatile Production From The Prediction Model Based On The Physical And Chemical Properties Of Woody Biomass

Biomass is widely considered to be a kind of environmentally friendly renewable energy, which is "CO2 zero emission". With low content of sulfur and nitrogen, the burning biomass can also reduce the emissions of sulfur oxides and nitrogen oxides in the process of conventional fossil fuel combustion expect CO2 emissions. All over the world, annual output of rural biomass is about 30 billion tons, and biomass account for 14% of the world’s energy consumption second only to oil, coal and natural gas. Considering that biomass is a renewable, potentially sustainable, and relative environmental friendly clean energy, China has intensified the efforts on the development and utilization of renewable biomass.In this paper, the physical and chemical characteristics of Eucalyptus in Zhanjiang biomass power plant are analyzed, and the correlation between the industrial analysis index, element analysis index and calorific value is discussed. Based on this, the prediction model between industrial analysis, element analysis and calorific value is constructed, tested and evaluated. The results show that the contents of ash has a certain correlation with these analysis indices such as carbon, hydrogen, oxygen, nitrogen and so on, the lower calorific value has a certain correlation with the analysis indices such as ash, volatile, water and fixed carbon, etc. Based on the theory of relativity, the corresponding forecasting model is constructed, and then the model is verified and evaluated by means of mean error and relative error.Based on the study of physical and chemical properties, the volatile products are analyzed by TG-DTG-FTIR. In order to obtain more in-depth understanding of the precipitation mechanism of volatile component of biomass in the process of combustion, the weightlessness at the heating rate of 10rate of 10℃/min,30℃/min and 60℃/min is studied, which is according to some theoretical bases. The bases include combustion performance parameters such as ignition point, maximal combustion rate and burnout temperature, combustion performance indices and combustion stability characteristic index. Results indicate that based on the TG-DTG curve of weightlessness, the process of biomass combustion is divided into three stages, i.e., water evaporation stage, volatile phase and carbonization stage, volatiles precipitation stage and carbonization stage, among which volatiles precipitation stage is the main combustion process. Then the precipitation process of volatile components is monitored by FTIR chromatography technique to obtain the components of volatiles, which will provide some certain reference values and foundation for the prevention of corrosion and slab-bonding of boiler in the future.In this paper, the analysis of the physical and chemical properties of biomass and the production of volatiles provides some certain references for the formation of systematic theory that aims to analysis basic properties of biomass. At the same time, the research digs out the economic promotion value of biomass and will contribute to the study on the prevention of corrosion and slab-bonding of boiler in the future.