Experimental Investigation of Combustion Kinetics of Wood Powder and Pellet

Peng, Haobin; Li, Yuesheng; Li, Yunquan; Yuan, Fangyang; Chen, Guohua

doi:10.1155/2018/5981598

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…With the biomass densification process, the energy value per unit volume of solid biofuel is increased (Karunanithy et al 2012). Biomass energy is considered to have the greatest potential for renewable energy in the near future (Haobin et al 2018). By using biomass or lignocellulosic waste as densified biofuels, it can bring benefits such as energy security, rural growth, and environmental protection (Carrillo-Parra et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Valorization of briquettes fuel using Pinus spp. sawdust from five regions of Mexico

Ramírez-Ramírez

Carrillo-Parra

Ruíz-Aquino

et al. 2021

BioRes

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This research characterized briquettes made with Pinus spp. sawdust without the use of additives. For this purpose, 19 samples of sawdust from different wood industries located in five states of the Mexican Republic were used. The densification process was carried out in a vertical hydraulic piston laboratory briquette machine. The briquettes were made with 40 g of sawdust, at 50 °C, 20 kPa and pressing for 5 min. The results obtained varied as follows: moisture content (4.1% to 7.2%), density (813.9 to 1,014.4 kg/m3), volumetric expansion (7.4% to 37.3%), compressive strength (4.9 to 40.8 N/mm), impact resistance index (46.7% to 200%), ash (0.1% to 1.1%), volatile matter (82.9% to 90.7%), fixed carbon (8.9% to 16.4%), and calorific value (20.5 to 22.8 MJ/kg). The density of the briquettes was within the “acceptable” classification (800 to 1,200 kg/m3). It was observed that, the higher the density, the lower the volumetric expansion, the higher the compressive strength, and the higher the impact resistance index. According to the ash content, the briquettes could achieve international quality. Due to high volatile matter values, rapid combustion of the briquettes with little generation of toxic smoke would be expected. Fixed carbon and calorific value results were acceptable.

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Section: Introductionmentioning

confidence: 99%

Valorization of briquettes fuel using Pinus spp. sawdust from five regions of Mexico

Ramírez-Ramírez

Carrillo-Parra

Ruíz-Aquino

et al. 2021

BioRes

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“…Numerous studies of characteristics and thermal behaviors have been conducted on various types of waste, for instance, pyrolysis and gasification of corn wastes [5], woody biomass, oat straw, dried citrus waste [6] as well as food waste [7]; co-pyrolysis of raw/terrified wood and coal blends [8]; pyrolysis of paper waste [9], [10]; combustion on wood pellet and sawdust [11] and municipal waste [12], [13]; gasification of rice husk [14], bagasse [15] and municipal solid waste [16]. Nevertheless, due to the wide variation in the nature of different waste sources, the existing data regarding municipal, agricultural and industrial wastes is still very small and fragmented.…”

Section: Introductionmentioning

confidence: 99%

Waste to Energy: Investigation of Characteristics and Thermal Behaviors of Wastes

Nam¹,

Anh²,

Trúc³

2020

JST

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Rác thải từ các hoạt động nông – công nghiệp và rác thải sinh hoạt có thể trở thành nguồn nguyên liệu tiềm năng cho các công nghệ chuyển hóa năng lượng tiên tiến. Do sự khác biệt lớn về bản chất của các nguồn thải, hiểu biết hiện có về đặc tính và hành vi nhiệt của rác thải vẫn còn rất hạn chế. Nghiên cứu hướng tới mục tiêu xác định các đặc tính và hành vi nhiệt của ba loại rác thải: bã mía, vải vụn và nhựa. Kết quả phân tích cho thấy các rác thải này có tiềm năng cao để sử dụng cho các công nghệ chuyển đổi năng lượng. Nhựa có giá trị cao nhất về hàm lượng chất bốc và nhiệt trị. Trong khi đó, bã mía và vải vụn có hàm lượng tro rất ít, phù hợp cho các quá trình nhiệt hóa. Phân tích nhiệt TGA-DTG cho thấy sự phân hủy nhiệt của bã mía và vải vụn tương đối giống nhau, thể hiện qua ba giai đoạn: giai đoạn khử hơi nước, giai đoạn phân hủy hàm lượng chất bốc và giai đoạn oxi hóa than. Tuy nhiên, đối với nhựa, sự phân hủy nhiệt được cấu thành chủ yếu từ sự phân hủy chất bốc và các chuỗi polyene. Các kết quả này mang lại những thông tin quan trọng cho việc mô phỏng và thiết kế các hệ thống chuyển hóa năng lượng tiên tiến sử dụng các nguồn rác thải đa dạng.

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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 Investigation of Combustion Kinetics of Wood Powder and Pellet

Cited by 7 publications

References 24 publications

Valorization of briquettes fuel using Pinus spp. sawdust from five regions of Mexico

Valorization of briquettes fuel using Pinus spp. sawdust from five regions of Mexico

Waste to Energy: Investigation of Characteristics and Thermal Behaviors of Wastes

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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