Characteristic Analysis of a Rotary Regenerative Type Catalytic Combustion Reactor for Ultra Low Calorific Value Gas

Sang, Zhenkun; Bo, Zemin; Liu, Xing; YiwuWeng,

doi:10.1115/1.4037481

Cited by 8 publications

(5 citation statements)

References 22 publications

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“…However, incremental rotation has outstanding advantages on controlling radial leakage than continuous rotation. The feasibility of RRCCR was proved in our previous research [20]. Therefore, based on the typical parameters of a 100 kW stage gas turbine, this research gives priority to explore the influence of the changes of the inlet velocity and concentration on the performance of the RRCCR.…”

Section: Introductionmentioning

confidence: 94%

Numerical Investigations of the Influencing Factors on a Rotary Regenerator-Type Catalytic Combustion Reactor

Sang

et al. 2018

Catalysts

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Ultra-low calorific value gas (ULCVG) not only poses a problem for environmental pollution, but also createsa waste of energy resources if not utilized. A novel reactor, a rotary regenerator-type catalytic combustion reactor (RRCCR), which integrates the functions of a regenerator and combustor into one component, is proposed for the elimination and utilization of ULCVG. Compared to reversal-flow reactor, the operation of the RRCCR is achieved by incremental rotation rather than by valve control, and it has many outstanding characteristics, such as a compact structure, flexible application, and limited energy for circulation. Due to the effects of the variation of the gas flow and concentration on the performance of the reactor, different inlet velocities and concentrations are analyzed by numerical investigations. The results reveal that the two factors have a major impact on the performance of the reactor. The performance of the reactor is more sensitive to the increase of velocity and the decrease of methane concentration. When the inlet concentration (2%vol.) is reduced by 50%, to maintain the methane conversion over 90%, the inlet velocity can be reduced by more than three times. Finally, the highly-efficient and stable operating envelope of the reactor is drawn.

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Section: Introductionmentioning

confidence: 94%

Numerical Investigations of the Influencing Factors on a Rotary Regenerator-Type Catalytic Combustion Reactor

Sang

et al. 2018

Catalysts

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“…The utilization of low‐calorific gas (LCG) contributed to energy saving and environmental protection. The common sources of the LCG included the blast furnace gas, landfill gas, and coal mine methane (CMM) 1–4 . Due to the main component of methane, the greenhouse effect of the LCG discharging was at least 21 times higher than that of carbon dioxide 5–7 .…”

Section: Introductionmentioning

confidence: 99%

“…The common sources of the LCG included the blast furnace gas, landfill gas, and coal mine methane (CMM). [1][2][3][4] Due to the main component of methane, the greenhouse effect of the LCG discharging was at least 21 times higher than that of carbon dioxide. [5][6][7] In China, the total amount of CMM drainage was about 24 billion m 3 in 2020, but only 16 billion m 3 was utilized due to large proportion of low-concentration methane.…”

Section: Introductionmentioning

confidence: 99%

Inhomogeneous packed bed burner for improving the utilization of low‐concentration methane

Qian

Dai

et al. 2022

Env Prog and Sustain Energy

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Homogeneous packed bed was usually assumed in the study of porous media combustion. However, the absolute homogeneous structure was impossible in the actual application. In this article, an experimental system was established to study the inhomogeneity of porous media with different diameters and materials of pellets.The effects on the burner temperature, pollutant emissions and start-up characteristics were investigated. Results indicate that the mixed pellets of the three-diameter and four-diameter combinations improved the flame temperature and moved the flame location to the downstream. The CO emission decreased with the increasing of inlet velocity significantly, but the NO x emission increased. For the mixing of zirconia and alumina pellets, the flame temperature was increased and the flame location was close to the outlet with more zirconia pellets. In addition, an orange submerged flame appeared finally compared with the blue flame during the initial ignition of the gas at the surface.

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“…Mathematical model can be a valuable tool to understand the processes and assisting with device design 12,13 . Describing the internal behavior of the reactor in a mathematical way, revealing the essential laws of the reactor during the reaction 14–16 .…”

Section: Introductionmentioning

confidence: 99%

Mathematical model of thermal storage catalytic combustion process of ethyl acetate on platinum/palladium molecular sieve support reaction system

Jiang

Kang

Chen

et al. 2020

Asia-Pacific J Chem Eng

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This work focused on the mathematical model establishment and accurately forecast the conditions of thermal storage catalytic combustion about ethyl acetate, using platinum/palladium molecular sieve support reaction system. According to the physical properties of ethyl acetate and the mass transfer and continuity equations, a mathematical model was established using FORTRAN programming. The mathematical model was used to calculate the removal rate of ethyl acetate at switching time and processing flow rate. Under the same conditions, the model and experiment proved that the removal rate of ethyl acetate was above 98%, indicating that the model provides a valid data for a deeper understanding of the thermal storage catalytic combustion. The accuracy of the model is verified by the experimentally measured bed temperature when compared with the calculated. This work can provide a valuable tool to prevent the reactor from ‘over temperature' or ‘flaming out' in thermal storage catalytic combustion process.

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Characteristic Analysis of a Rotary Regenerative Type Catalytic Combustion Reactor for Ultra Low Calorific Value Gas

Cited by 8 publications

References 22 publications

Numerical Investigations of the Influencing Factors on a Rotary Regenerator-Type Catalytic Combustion Reactor

Numerical Investigations of the Influencing Factors on a Rotary Regenerator-Type Catalytic Combustion Reactor

Inhomogeneous packed bed burner for improving the utilization of low‐concentration methane

Mathematical model of thermal storage catalytic combustion process of ethyl acetate on platinum/palladium molecular sieve support reaction system

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