Hu J.-J.,Henan Agricultural University |
Zhang Q.-G.,Henan Agricultural University |
Lei T.-Z.,Henan Academy of science |
Wang Z.-W.,Key Biomass Energy Laboratory
Advanced Materials Research | Year: 2011
In the paper, in order to investigate the situation of impact on wet molding for straw of compressing speed and moisture ratio, and look for the inside law between them, closed compress experimental study on the wet molding for wheat straw pellet fuel was done by electrical universal material experimental machine and experimental provision made by oneself. Study on the impact situation for compressing speed and moisture ratio was done from pressure intensity, displacement and density of materiel. The result, which low compressing speed and low moisture ratio were propitious to wet molding, was gotten. The molding stage can be divided to loose stag, transitional stage, compressing stage. Partial elastic deformation mainly occurred In loose stage, and its mathematical model was linear equation. Elastic deformation mainly occurred In transitional stage, and its mathematical model was exponential equation. Plastic deformation mainly occurred In compressing stage, and its mathematical model was linear equation. The conclusion above has general directive significance to wet molding for straw pellet fuel. © (2011) Trans Tech Publications.
Zhu J.,CAS Zhengzhou Research Institute |
Zhu J.,Key Biomass Energy Laboratory |
Wang Z.,CAS Zhengzhou Research Institute |
Wang Z.,Key Biomass Energy Laboratory |
And 7 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2010
To quantitatively explain the potential of energy saving and greenhouse gas emissions reduction of straw-based pellet fuel, system of corn straw to pellet fuel was taken as research object from the view of energy consumption and environmental emission. The unit processes of corn straw growth, transportation, compression, corn straw pellet fuel transportation and combustion were analyzed. The analysis model was built about life cycle energy consumption and environmental emission of corn straw pellet fuel. Energy consumption and environmental emission were evaluated for a 5000 t/a corn straw pellet fuel plant. The results showed that energy was consumed in corn straw transportation, compression, pellet fuel transportation, et al. Energy consumption using in corn straw compression was the most of it. The CO2 amount settled by corn straw growing was about 96.6% of CO2 emission from the life cycle assessment, it made a great greenhouse emission reduction. According to life cycle assessment of corn straw pellet fuel, straw pellet fuel had a bigger advantage as compare with fossil fuel. Those results provided foundational data for utilization of straw pellet fuel. It is important to reduce electricity consumption of straw compression for improving utilization level of straw pellet fuel.