Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Thomasson, J. Alex
Committee Member
Bricka, R. Mark
Committee Member
Sui, Ruixiu
Committee Member
Fernando, Sandun D.
Date of Degree
12-10-2005
Document Type
Graduate Thesis - Open Access
Major
Biological Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Agricultural and Biological Engineering
Abstract
To examine the effects of operational parameters on syn-gas quality and biouel conversion rate under various running conditions, an experimental study of hardwood chip?s gasification in a downdraft gasifier was conducted. The resulting syn-gas had average low heating value of 5.79 ± 0.52 MJ/ Nm3, tar concentration of 14.06 ± 8.54 mg/Nm³, particulate concentration of 3.05 ± 1.79 mg/Nm³, hardwood conversion rate of 2.37±0.24 Nm³/kg, and carbon conversion rate of 98.01 ± 0.53%. This syn-gas is of acceptable quality to be used as a fuel source for internal combustion engine operations. The gasifier?s grate temperature had no evident effects on syn-gas quality and conversion rate within a range of 740 to 817oC. The particulate contents in preiltered syn-gas significantly increased when the gas flow rate changed from 36 to 56 Nm3/h. When the moisture content of hardwood chips increased, tar content of postiltered syn-gas significantly increased, and CO content significantly decreased.
URI
https://hdl.handle.net/11668/17220
Recommended Citation
Wei, Lin, "Experimental Study On The Effects Of Operational Parameters Of A Downdraft Gasifier" (2005). Theses and Dissertations. 2150.
https://scholarsjunction.msstate.edu/td/2150