Influence of particle size on performance of a pilot-scale fixed-bed gasification system.
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.
Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, PR China.
Renzhan
R
Yin
Ronghou
R
Liu
Jinkai
J
Wu
Xiaowu
X
Wu
Chen
C
Sun
Ceng
C
Wu
D019149:Bioreactors; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000138:chemical synthesis*; D006361:Heating / Q000295:instrumentation*; D017745:Incineration / Q000295:instrumentation*; D010316:Particle Size; D010865:Pilot Projects; D027861:Prunus / Q000737:chemistry*
D005740:Gases