Dynamic Behavior of Reverse Flow Reactor for Lean Methane Combustion

Budhi, Yogi Wibisono; Effendy, Mohammad; Bindar, Yazid; Subagjo, Subagjo

doi:10.5614/j.eng.technol.sci.2014.46.3.5

Cited by 11 publications

(1 citation statement)

References 27 publications

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“…Recently, the use of biomass attracts many researchers' attention due to its sustainability and contribution to a low carbon footprint. [1][2][3][4][5][6][7][8] Rice husk, as agricultural biomass, has high heating value (2870-4067 kcal/kg) and high volatile matter (55% to 60%), so it is attractive to be exploited as fossil fuels substitute. 9,10 The green products from rice husk are mostly obtained through combustion.…”

Section: Introductionmentioning

confidence: 99%

Digitalized turbulent behaviors of air and rice husk flow in a vertical suspension furnace from computational fluid dynamics simulation

Steven

Restiawaty

Pasymi

et al. 2022

Asia-Pacific J Chem Eng

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The knowledge of fluid–particle flow behavior is necessary. Unfortunately, computational fluid dynamics (CFD) studies are mostly focused on developing numerical methods in detail. Instead, the CFD studies should also subtly shift to become a tool for digitalizing fluid science to guide the practical industrial aspects. Therefore, this simulation study intends to reveal the air and rice husk flow behaviors in a vertical suspension furnace, complete with presenting digital simulation data, aiming to alleviate the escape particle amount. According to this study, the escaped particle amount was suppressed under more sphere particle, smaller particle size, and feed inlet pipe that sunk into the burner. The properties change from rice husk to ash, along with temperature escalation (as in combustion phenomena), enlarging the escaped particle amount, so the cyclone should be installed to handle it. In addition, the results of digital turbulent data from CFD simulation have succeeded in intriguing and revealing the fluid–particle flow behavior in the vertical suspension furnace. The data show a close match to the real phenomena occurring inside this furnace which reflects the standard k–ε model can conclusively predict fluid–particle flow behavior without conflicting Newton's second law of particle motion.

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Section: Introductionmentioning

confidence: 99%

Digitalized turbulent behaviors of air and rice husk flow in a vertical suspension furnace from computational fluid dynamics simulation

Steven

Restiawaty

Pasymi

et al. 2022

Asia-Pacific J Chem Eng

Self Cite

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Simulation Study of Bamboo Leaves Valorization to Small-Scale Electricity and Bio-silica Using ASPEN PLUS

et al. 2022

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Thermodynamics Simulation Performance of Rice Husk Combustion with a Realistic Decomposition Approach on the Devolatilization Stage

Steven

Hernowo

Restiawaty

et al. 2022

Waste Biomass Valor

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Rice husk has a great potential in its calorific value and silica content in ash which makes its valorization through combustion becomes important and interesting. This study presents the thermodynamics simulation performance of rice husk combustion using a realistic decomposition approach. A non-ideal gas approach and fugacity coefficient were also considered in the calculation. From this study, rice husk is devolatilized to form gases (63.37%), tar (8.69%), char (27.94%), and all of these are then oxidized to form flue gas. The realistic decomposition approach calculated that about 2.6 MJ/kg of specific combustion energy is produced, the maximum combustion temperature is up to 1457 o C for perfect insulation condition, and up to 1400 o C if there is a heat loss.It is found that combustion equipped with larger excess air could quench the heat produced and reduce the combustion efficiency but could maintain the temperature at 700 o C. Furthermore, the thermodynamics simulation expressed that NO emission amount from rice husk combustion is negligible and there is still a probability for CO and H2 to be produced at above 500 o C due to Boudouard reaction and homogeneous water gas shift reaction (WGSR). The study showed that a realistic decomposition approach could predict the rice husk combustion performance with a reasonable and logical result. Supplying excess air of about 180-200% is advantageous to keep the combustion temperature at 700 o C in order to prevent silica crystalline formation which harms human 2 health, as well as suppressing NO emission and reducing CO emission from the simultaneous Boudouard and WGSR.

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Dynamic Behavior of Reverse Flow Reactor for Lean Methane Combustion

Cited by 11 publications

References 27 publications

Digitalized turbulent behaviors of air and rice husk flow in a vertical suspension furnace from computational fluid dynamics simulation

Digitalized turbulent behaviors of air and rice husk flow in a vertical suspension furnace from computational fluid dynamics simulation

Simulation Study of Bamboo Leaves Valorization to Small-Scale Electricity and Bio-silica Using ASPEN PLUS

Thermodynamics Simulation Performance of Rice Husk Combustion with a Realistic Decomposition Approach on the Devolatilization Stage

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