PYROLYSIS AND CARBON PRODUCTION OF RICE HUSK IN FLUIDIZED BED UNDER FLUE GAS WITH DIFFERENT CO<sub>2</sub>/O<sub>2</sub> ATMOSPHERES

HU Hua-jun; HUANG Ya-ji; CAO Jian-hua; LIU Ling-qin; QI Er-bing; DING Shou-yi; FAN Cong-hui

doi:10.13205/j.hjgc.202101018

Volume 39 Issue 1

Apr. 2021

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(1): 117-122

HU Hua-jun, HUANG Ya-ji, CAO Jian-hua, LIU Ling-qin, QI Er-bing, DING Shou-yi, FAN Cong-hui. PYROLYSIS AND CARBON PRODUCTION OF RICE HUSK IN FLUIDIZED BED UNDER FLUE GAS WITH DIFFERENT CO2/O2 ATMOSPHERES[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 117-122. doi: 10.13205/j.hjgc.202101018

Citation:

HU Hua-jun, HUANG Ya-ji, CAO Jian-hua, LIU Ling-qin, QI Er-bing, DING Shou-yi, FAN Cong-hui. PYROLYSIS AND CARBON PRODUCTION OF RICE HUSK IN FLUIDIZED BED UNDER FLUE GAS WITH DIFFERENT CO₂/O₂ ATMOSPHERES[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 117-122. doi: 10.13205/j.hjgc.202101018

Citation:

HU Hua-jun, HUANG Ya-ji, CAO Jian-hua, LIU Ling-qin, QI Er-bing, DING Shou-yi, FAN Cong-hui. PYROLYSIS AND CARBON PRODUCTION OF RICE HUSK IN FLUIDIZED BED UNDER FLUE GAS WITH DIFFERENT CO₂/O₂ ATMOSPHERES[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 117-122. doi: 10.13205/j.hjgc.202101018

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PYROLYSIS AND CARBON PRODUCTION OF RICE HUSK IN FLUIDIZED BED UNDER FLUE GAS WITH DIFFERENT CO₂/O₂ ATMOSPHERES

doi: 10.13205/j.hjgc.202101018

Key Laboratory of Energy Thermal Conversion and Control of the Ministry of Education, Southeast University, Nanjing 210096, China

Received Date: 2020-03-26
Available Online: 2021-04-23

Abstract

Abstract

Pyrolysis of rice husk in different atmospheres (by alternating the volume ratios of N₂, O₂, and CO₂) were carried out on a small-scale fluidized bed to obtain the distribution pattern of the three-phase product of rice husk pyrolysis and the characteristics of the rice husk biochar. The functional groups and porous structure on the surface of biochar were analyzed by means of FTIR and BET, and the energy transfer during the pyrolysis of rice husk under different O₂ concentrations were investigated. The results showed that increasing the concentration of O₂ and CO₂ were conducive to the transfer of pyrolysis products from the solid phase to the gas phase, which would reduce the biochar yield and the content of organic components in biochar, but it was conducive to the formation of porous structures and aromatic functional groups on the surface of biochar. Rice husk could achieve an energy consumption ratio of more than 80% and an energy recovery rate of more than 70%, under lower O₂ concentration.
- pyrolysis,
- oxidation,
- carbon dioxide,
- fluidized-bed,
- biochar,
- rice husk

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