A Study on Mass and Energy Balance of FG/NG Combustion

• Main Authors: Guan-Wei Chen, 陳冠維
• Other Authors: Shuhn-Shyurng Hou
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/10237909928228280231

碩士 === 崑山科技大學 === 機械工程研究所 === 100 === This study focused on the mass and energy balance characteristics of waste fuel gas (FG) and natural gas (NG) combustion, as the reference for FG/NG in the practical applications. First, fuel gas net calorific value, adiabatic flame temperature, volume flow rate, air volume flow rate, flue gas composition, and thermal efficiency were analyzed. Using FG/NG as the input fuel and keeping the total heat release rate at 1MW, the mass and energy balance characteristics of FG/NG combustion were discussed. The theoretical calculations were conducted considering stoichiometric air and without preheat. As the hydrogen content in the FG was increased, the CO2 and N2 content in the flue gas gradually decreased. In comparison of different compositions of FG, the hydrogen content played an important role on adiabatic flame temperature. As the hydrogen content of FG or the FG content of FG/NG mixture was increased, adiabatic flame temperature increased. Additionally, individually or in combination with FG/NG were also discussed under the operating conditions of adding ten percent excess air and/or 0.1MW preheat.