Alkali metal modified iron-nickel oxygen carrier to produce hydrogen-rich synthesis gas by chemical looping gasification with pine sawdust
Pengcheng Wang
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China
School of Energy and Power Engineering, Chongqing University, Chongqing, China
Search for more papers by this authorCorresponding Author
Ge Pu
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China
School of Energy and Power Engineering, Chongqing University, Chongqing, China
Correspondence
Ge Pu, Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China.
Email: [email protected]
Search for more papers by this authorQiwen Liu
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China
School of Energy and Power Engineering, Chongqing University, Chongqing, China
Search for more papers by this authorWeicheng Xiong
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China
School of Energy and Power Engineering, Chongqing University, Chongqing, China
Search for more papers by this authorPengcheng Wang
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China
School of Energy and Power Engineering, Chongqing University, Chongqing, China
Search for more papers by this authorCorresponding Author
Ge Pu
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China
School of Energy and Power Engineering, Chongqing University, Chongqing, China
Correspondence
Ge Pu, Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China.
Email: [email protected]
Search for more papers by this authorQiwen Liu
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China
School of Energy and Power Engineering, Chongqing University, Chongqing, China
Search for more papers by this authorWeicheng Xiong
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China
School of Energy and Power Engineering, Chongqing University, Chongqing, China
Search for more papers by this authorSummary
In the research of biomass chemical looping gasification technology, the production of hydrogen-rich synthesis gas has received increasing attention. In this paper, iron-nickel oxygen carriers were prepared by the mechanical and impregnation method. Chemical looping gasification experiments were performed with pine sawdust in a self-built fixed-bed reactor to prepare hydrogen-rich synthesis gas. Experimental results showed that for the iron-nickel oxygen carrier with a loading ratio of 3% NiO under reaction conditions of 800°C, ratio of steam content to biomass (S/B) of 1.25, and ratio of lattice oxygen to biomass (O/B) of 0.2, the volume fraction of hydrogen in the synthesized gas reached 43.06%; correspondingly, the carbon conversion rate was 78.22%, the low calorific value of syngas was 7.49 MJ/Nm3, and the gas production rate was 1.25 Nm3/kg. After modification of the iron-nickel oxygen carrier with a mass ratio of 5% K2CO3, the volume fraction of hydrogen in the prepared synthesis gas increased to 47.83%, the corresponding carbon conversion rate was 85.44%, and the low-level calorific value was 7.95 MJ/Nm3. The gas production rate was 1.49 Nm3/kg.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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