Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, PR China.
Bioresour Technol. 2012 Sep;119:15-21. doi: 10.1016/j.biortech.2012.05.085. Epub 2012 May 30.
The effect of particle size on the gasification performance of a pilot-scale (25 kg/h) downdraft fixed bed gasification system was investigated using prunings from peach trees at five different size fractions (below 1, 1-2, 2-4, 4-6 and 6-8 cm). The gas and hydrocarbon compositions were analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC-MS), respectively. With increasing particle size, gas yield increased while tar and dust content decreased. The lower heating value of the gas decreased slightly with particle size. At a smaller particle size, more hydrocarbons were detected in the producer gas. Hydrogen and carbon dioxide contents increased with the decrease in particle size, reaching 16.09% and 14.36% at particle size below 1cm, respectively. Prunings with a particle size of 1-2 cm were favorable for gasification in the downdraft gasifier used in this study.
研究了粒径对桃树枝屑在中试规模（25kg/h）下吸式固定床气化系统气化性能的影响，使用了五个不同粒径（<1cm、1-2cm、2-4cm、4-6cm 和 6-8cm）的桃树枝屑。通过气相色谱（GC）和气相色谱/质谱（GC-MS）分别分析了气体和烃类成分。随着粒径的增加，气体产率增加，而焦油和粉尘含量减少。气体的低热值随粒径略有下降。在较小的粒径下，在产生的气体中检测到更多的烃类。氢气和二氧化碳的含量随粒径的减小而增加，在粒径小于 1cm 时分别达到 16.09%和 14.36%。在本研究中使用的下吸式气化炉中，粒径为 1-2cm 的木屑有利于气化。
