The influence of the recovery chamber parameters on the efficiency of biomass gasification process
2019
Tsyvenkova, N., Zhytomyr National Agroecological Univ. (Ukraine) | Holubenko, A., Zhytomyr National Agroecological Univ. (Ukraine) | Omarov, I., Zhytomyr National Agroecological Univ. (Ukraine) | Tereshchuk, M., Zhytomyr National Agroecological Univ. (Ukraine)
The scientific work is devoted to investigation of dependence of length of way that blowing gas streams travels through active zone of gasification chamber, from its design and technological parameters. To find this a tuyere zone form and an analysis of blowing gas streams propagation kinetics through active zone was done. The gasifying chamber design is introduced. The chamber has a distinctive difference: moving tuyeres that can be moved along their axis. To control gasifying process a mathematical dependence was formed that connects average way of blowing gases in gasification chamber with geometrical parameters of this chamber, biomass fuel characteristics and air supply for gasifying. A multifactor experiment is done, where tuyere diameter, tuyere circle diameter and air supply for gasifying are variable factors. Response surfaces are built on that data. Experimental results let us define the optimal diapasons of each parameter that provides the highest gasifier’s specific thermal productivity 11.1 MJ•mE−3. The obtained measurement results are in high correlation with the calculations. The results let us that it is possible to manage the gasification process and receive high values of gasifier’s specific thermal productivity while changing the tuyere circle diameter to match the fuel characteristics of biomass and air supply for gasifying. It is up to 20−23 % higher compared to gasifying biomass such as straw pallets in other known downdraft gasifyer designs.
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