Effect of interactions during co-combustion of organic hazardous wastes on thermal characteristics, kinetics, and pollutant emissions

2022 ◽  
Vol 423 ◽  
pp. 127209
Author(s):  
Sheng Zhang ◽  
Fei Wang
Author(s):  
Joseph Soliman ◽  
Ahmed Emara ◽  
Adel Hussien

The demand for industrial burners and gas turbine engines with reduced emission levels, stable combustion conditions and low specific fuel consumption is the goal at the past two decades. A significant challenge is to develop a practical dual fuel corresponded with these requirements in the way to produce an efficient combustion and to comply with environmental concerns and government regulations. The investigated burner consists of eight gaseous jets arranged in two consecutively interacted equal lotus bundles in the axial direction downstream of the flow. These eight jets can be easily moved and directed to penetrate the combustion reaction zone at different axial positions with four inclination angles at the burner axis (θ= 0°, 30°, 45°, and 60°). This axial motion is easily performed by adjusting few screws mounted on the burner end in the way to facilitate the jet interaction inside the surrounded combustion air. The present work aims to demonstrate the flame structure, inflame temperature, and stack emissions at different liquid fuel ratio, gaseous fuel injection locations and jet inclination angles. It is noticed that, the two different fuels at different interaction locations have an influence on the pollutant emissions and temperature as well as the combustion efficiency. In addition, increasing the gaseous fuel reduces the flame size and increases the flame temperature.


Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8332
Author(s):  
Chao Yu ◽  
Wenbao Zhang ◽  
Xiangyao Xue ◽  
Jiarun Lou ◽  
Guochao Lao

With the incremental power of construction machinery diesel engines, the power performance of diesel engines and the pollutant emissions from the exhaust gas have imposed increasingly stringent requirements on the intake cooling system of diesel engines. This paper compared the j/f evaluation factors for fin unit bodies of water-cooled intercooler (including straight fins and rectangular misaligned fins) by means of CFD simulation, and found that the rectangular misaligned fins had an 8% advantage in comprehensive performance. With the rectangular staggered fin intercooler, it was found that under the same conditions, the cooling efficiency of the dual-pass water-cooled intercooler is higher than that of the single-pass water-cooled intercooler, and the uniformity factor of the temperature difference field of the dual-pass water-cooled intercooler is 1.5% higher than that of the latter. The accuracy of the overall simulation of the intercooler is verified by the field test. The dual-pass and single-pass water-cooled intercooler both can maintain heat balance under working conditions, and its average air inlet temperature is 10 °C lower than that of the original air-cooled intercooler, which provides support for further reducing the engine air inlet temperature. The results provide a theoretical basis for the performance improvement of water-cooled intercoolers.


1999 ◽  
Vol 09 (PR3) ◽  
pp. Pr3-307-Pr3-312 ◽  
Author(s):  
B. Pohlmann ◽  
K.-H. Funken ◽  
R. Dominik
Keyword(s):  

Author(s):  
Roger Batstone ◽  
James E. Jr. Smith ◽  
David Wilson ◽  
◽  

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