Experimental Study on Emission Characteristics during Combustion of Single Bamboo Pellet

Peng, Haobin; Chen, Guohua; Li, Yuesheng; Jiang, Zhiming; Yu, Ming; Li, Yunquan

doi:10.2991/ism3e-15.2015.52

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…To examine the emission characteristics, pellets were individually burned in a furnace at varying air mass flow rates and air temperatures. 36 Coal and pine wood particle ignition characteristics and burning images in O 2 /N 2 , O 2 /CO 2 , and O 2 /H 2 O environments in a drop-tube combustor have been investigated. 37 The results show that when N 2 is swapped out for CO 2 , the particles ignite uniformly, resulting in a longer ignition delay and lower burning temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…The results showed the significance of the radii of volatile flames, flame intensity, and particle size for the validation of combustion models. To examine the emission characteristics, pellets were individually burned in a furnace at varying air mass flow rates and air temperatures . Coal and pine wood particle ignition characteristics and burning images in O 2 /N 2 , O 2 /CO 2 , and O 2 /H 2 O environments in a drop-tube combustor have been investigated .…”

Section: Introductionmentioning

confidence: 99%

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Combustion Characteristics and Visualization Analysis of a Biomass Pellet Oriented in Different Positions in a Fixed-Bed Reactor at Different Operating Conditions

El‐Sayed

Khass

Noseir

et al. 2023

Ind. Eng. Chem. Res.

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For all real-world applications, such as fluidized-bed and packed-bed combustion, it is essential to understand the combustion characteristics of an individual solid biomass particle. Under a variety of operating circumstances, investigations on the combustion and mass loss of single pellets of sugarcane (SC) and guava leaves (GL) were conducted. A visualization technique was used to capture the combustion processes of volatile and char. Both homogeneous ignition and hetero–homogeneous simultaneous ignition of both volatiles and char were found. When compared to the material composition and particle-size distribution of the pellet, the brightness of the pellet changed differently with increasing air mass flow rate and hot air temperature. By increasing the hot air temperature and air mass flow rate, the volatile flame of biomass pellets was made shorter and brighter, which lowered the volatile burnout duration. The majority of the entire conversion time is spent on char burning. Compared to other angles, the pellet orientation angle of 30° has a shorter ignition time, a lower surface temperature, and a lower burnout temperature.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Combustion Characteristics and Visualization Analysis of a Biomass Pellet Oriented in Different Positions in a Fixed-Bed Reactor at Different Operating Conditions

El‐Sayed

Khass

Noseir

et al. 2023

Ind. Eng. Chem. Res.

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Combustion and mass loss behavior and characteristics of a single biomass pellet positioning at different orientations in a fixed bed reactor

El‐Sayed

Mostafa²,

Khass³

et al. 2023

Biomass Conv. Bioref.

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This study aims to investigate the combustion characteristics and mass loss behaviors of rice straw and wheat straw biomass pellets experimentally in a laboratory fixed bed combustor under various operating conditions. High-speed photography was used to record images of the combustion process, and a sensitive balance was utilized for recording the particle mass history during the combustion process in addition to K-type thermocouples for temperature measurements. For both materials, the single pellet was exposed to various air temperatures and different flow rates of air. The orientation of the biomass pellet was positioned at various angles from 0 (horizontal), 30°, 45°, 60° (inclined), and 90° (parallel) to the hot air stream at different flow rates. Both glowing reactions and flameless ignition have been noticed in all experiments at all pellet orientations. All pellets experienced low and high luminosity volatiles without flames, followed by a bright radish color and short-lived combustion of the chars. Although the volatile contents of the two materials are identical, the volatile combustion duration of wheat straw (17–258 s) is less than that of rice straw (20–300 s), which could be due to differences in particle sizes, shapes, and structural compositions. The results also show that increased air temperatures lessen the time it takes for volatile and char to ignite and burn off. It also raises the temperature of surface ignition. Starting from the horizontal position and increasing the orientation angle of the pellet, the volatile and char ignition times increase up to 30° and then drop up to 90°, with angle 45° giving the lowest value. The same pattern was also noticed for volatile and char burnout times. The pellet horizontal position (0°) exhibits reduced combustion and mass loss (%) time intervals. The order of increasing the maximum temperature at the pellet surface was 30° > 60° > 90° angles. Increasing the air temperature reduces the times of char combustion, devolatilization, volatile burnout, and char burnout. As the air flow rate increases, the effect on the combustion parameters alternates between increasing and decreasing values.

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Experimental Study on Emission Characteristics during Combustion of Single Bamboo Pellet

Cited by 2 publications

References 21 publications

Combustion Characteristics and Visualization Analysis of a Biomass Pellet Oriented in Different Positions in a Fixed-Bed Reactor at Different Operating Conditions

Combustion Characteristics and Visualization Analysis of a Biomass Pellet Oriented in Different Positions in a Fixed-Bed Reactor at Different Operating Conditions

Combustion and mass loss behavior and characteristics of a single biomass pellet positioning at different orientations in a fixed bed reactor

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