The Analysis of Experimental Research of Gasification Process of Low-Grade Fuel

• Main Author: S.S. Lys
• Format: Article
• Language: English
• Published: Ukrainian National Forestry University 2017-02-01
• Series: Науковий вісник НЛТУ України
• Subjects: gasification of solid fuels; gaseous fuel; synthesis gas
• Online Access: https://nv.nltu.edu.ua/index.php/journal/article/view/187

There are many ways of recycling wood and its waste into energy. But one of the most perspective is gasification. Therefore, the technology of thermal recycling of wood fuel in gaseous fuel is an urgent problem to be solved. Consequently, our objective is to find the dependence of net calorific value of synthesis gas from the amount of air, humidity and particle size of chopped wood, which is fed into the gasifier. For the experimental research and development process of gasification of wood in gaseous fuel a gasifier with a continuous layer is designed. In the process of of experimental research the author used a mix of wood (willow (Salix alba L.) in the amount of 1/3 of the total weight of the mixture, Pine (Pinus sylvestris) – 1/3 of the total weight of the mixture, birch (Betula pendula Roth.) – 1 / 3 of the total weight of the mixture). From experimental data we have evaluated the most optimal parameters gasification process of mixes wood, when net calorific value of synthesis gas reaches its maximum. We also obtained mathematical description of the object in a second order polynomial. To conclude, completed rationalization derived dependence to determine the values of the factors that ensure the maximum Q = 10.4 MJ / nm3, namely the size of the particles of wood l = 36 mm, the amount of air G = 68 nm3 / h, a mixture of wood humidity W = 34 %. The experimental data show that the experimental gasifier enables gasifying wood, at low and high humidity (50 %); while the gas generators for the industrial impact of humidity on the process of gasification is significant. Therefore, the results of theoretical and experimental researches should determine the technical parameters of the gas generator installation with the definition of rational parameters of the process: particle size and humidity of chopped wood, the amount of air that is fed into the gasification chamber and to develop practical recommendations for thermal recycling of wood.