Construction and Analysis of Heating Furnace Oxy-Fuel Combustion System Based on Chemical Looping Oxygen Production

doi:10.12068/j.issn.1005-3026.2018.10.008

Abstract

Abstract: Based on the principle of chemical looping oxygen production， the oxy-fuel combustion system of heating furnace was built to solve the oxygen source problem.The feasibility of constructing the system was analyzed by investigating the characteristics of Co₃O₄ oxygen uncoupling. The results showed that the volume fraction of the equilibrium oxygen from the Co₃O₄ reduction increases sharply with the reaction temperature. When the temperature is 900℃， the volume fraction of the equilibrium oxygen is 29.6%.The components of CO₂ and H₂O in flue gas do not affect the oxygen release process of Co₃O₄. The oxygen volume fraction in flue gas increases with increasing the mole ratio of Co₃O₄ and flue gas. When the mole ratio is 1:1， the oxygen volume fraction can be up to 24.5% at 950℃. In practice， for a furnace with 32t/h output，when the oxygen-enriched rate is 4%， the Co₃O₄ filling capacity is 3.4t.

Key words: heating furnace, oxy-fuel combustion, chemical looping, oxygen carrier, oxygen uncoupling

CLC Number:

TK11

WANG Kun， WANG Hong-jie， WEI Jia， ZHANG Ke-mu. Construction and Analysis of Heating Furnace Oxy-Fuel Combustion System Based on Chemical Looping Oxygen Production[J]. Journal of Northeastern University Natural Science, 2018, 39(10): 1408-1412.

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