Citation: XIAO Shen, SHEN Lai-hong, XIAO Jun, NIU Xin, GU Hai-ming, SONG Tao. NOx release in chemical looping combustion of biomass based on hematite[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(4): 490-498. shu

NOx release in chemical looping combustion of biomass based on hematite

  • Corresponding author: SHEN Lai-hong, 
  • Received Date: 28 October 2014

    Fund Project: 国家自然科学基金(51276037,51476029,51406035)。 (51276037,51476029,51406035)

  • Nitrogen emission during chemical looping combustion (CLC) of rice husk based on hematite in a batch fixed bed reactor was studied. Different variables affecting the process, such as reduction temperature and steam content, were tested. The results show that higher reduction temperature results in a higher carbon conversion which reaches the highest value when the steam flow is 1.0 g/min. Furthermore, there are no NO2 detected at all experiments. The rise of reduction temperature from 750 to 900 ℃ could contribute to the rise of NO, whereas the concentration of N2O reaches the highest value at 850 ℃. Both N2O and NO increase remarkably with the increase of steam flow. Nevertheless, the increasing rate of NO is faster than that of N2O. Besides, KAlSi3O8 is detectable in the reduced oxygen carrier, attributing to the reaction of K in biomass with hematite.
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