scholarly journals Status of MWth Integrated Gasification Fuel Cell (IGFC) Power Generation System Demonstration in China

2020 ◽  
Author(s):  
Chang Wei ◽  
Zhien Liu ◽  
Chufu Li ◽  
Surinder Singh ◽  
Haoren Lu ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Power Plant ◽  
Cell System ◽  
Design System ◽  
Low Carbon ◽  
Generation System ◽  
Power Generation System ◽  
Integrated Gasification ◽  
Sofc Stacks

Abstract This paper provides status update of IGFC power generation system being developed at National Institute of Clean-and-Low-Carbon (NICE) at MW th scale. This system is designed to use coal as fuel to produce syngas as a first step similar to integrated gasification combined cycles (IGCC). Subsequently, the solid oxide fuel cell system is used to convert chemical energy to electricity electrochemically without combustion, which is different from IGCC. This system leads to a higher efficiency as compared to a traditional coal-fired power plant. The unreacted fuel in the SOFC system is transported to an oxygen-combustor to be converted to steam and CO 2 . Through heat recovery system, the steam is condensed and removed, and CO 2 is enriched and captured for sequestration or other application, such as co-electrolysis of CO 2 and H 2 O using curtailed renewable energy for production of syngas. Comprehensive economic analysis for a typical IGFC system was performed and the results were compared with supercritical pulverized coal-fired (SCPC) power plant, showing the cost of electricity (COE) of IGFC could be up to 20% lower than that by SCPC with CO 2 capture. The SOFC stacks selected for IGFC development were tested and qualified under both hydrogen and simulated coal syngas fuel showing good consistency and stable long term performance. Experimental results using SOFC stacks and thermodynamic analysis (using ASPEN Plus) indicate that the hydrogen to CO ratio of the syngas is preferred to be 1.68 or higher to avoid carbon deposition inside of the fuel pipe. For lower H 2 /CO ratio, steam to CO ratio needs to be higher. Besides, the steam needs to be mixed well with the syngas above 100 o C and below the temperatures where carbon formation is thermodynamically favored. The 20kW SOFC power generation unit is being developed with design system conditions of 20 kW maximum power, current density of 0.334 A/cm 2 , DC efficiency of 50.41%, and fuel utilization of 80%. A 100kW subsystem will consist of 6 x 20kW power generation units, and the MW th IGFC system will consist of 5 x 100kW sub-systems.

scholarly journals Status of MWth Integrated Gasification Fuel Cell (IGFC) Power Generation System Demonstration in China

2020 ◽  
Author(s):  
Chang Wei ◽  
Zhien Liu ◽  
Chufu Li ◽  
Surinder Singh ◽  
Haoren Lu ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Power Plant ◽  
Cell System ◽  
Design System ◽  
Low Carbon ◽  
Generation System ◽  
Power Generation System ◽  
Integrated Gasification ◽  
Sofc Stacks

Abstract This paper provides status update of IGFC power generation system being developed at National Institute of Clean-and-Low-Carbon (NICE) at MWth scale. This system is designed to use coal as fuel to produce syngas as a first step similar to integrated gasification combined cycles (IGCC). Subsequently, the solid oxide fuel cell system is used to convert chemical energy to electricity directly through electrochemical reaction without combustion, which is different from IGCC. This system leads to a higher efficiency as compared to a traditional coal-fired power plant. The unreacted fuel in the SOFC system is transported to an oxygen-combustor to be converted to steam and CO2. Through heat recovery system, the steam is condensed and removed, and CO2 is enriched and captured for sequestration or utilization, such as co-electrolysis of CO2 and H2O using curtailed renewable energy for production of syngas. Comprehensive economic analysis for a typical IGFC system was performed and the results were compared with supercritical pulverized coal-fired (SCPC) power plant, showing the cost of electricity (COE) of IGFC could be up to 20% lower than that by SCPC with CO2 capture. The SOFC stacks selected for IGFC development were tested and qualified under both hydrogen and simulated coal syngas fuel showing good consistency and stable long term performance. Experimental results using SOFC stacks and thermodynamic analysis (using ASPEN Plus) indicate that the hydrogen to CO ratio of the syngas is preferred to be 1.68 or higher to avoid carbon deposition inside of the fuel pipe. For lower H2/CO ratio, steam to CO ratio needs to be higher. Besides, the steam needs to be mixed well with the syngas above 100oC and below the temperatures where carbon formation is thermodynamically favored. The 20kW SOFC power generation unit is being developed with design system conditions of 20 kW maximum power, current density of 0.334 A/cm2, DC efficiency of 50.41%, and fuel utilization of 80%. A 100kW-level subsystem will consist of 6 x 20kW power generation units, and the MWth IGFC system will consist of 5 x 100kW-level subsystems.

scholarly journals Status of MWth Integrated Gasification Fuel Cell (IGFC) Power Generation System Demonstration in China

2020 ◽  
Author(s):  
Chang Wei ◽  
Zhien Liu ◽  
Chufu Li ◽  
Surinder Singh ◽  
Haoren Lu ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Power Plant ◽  
Cell System ◽  
Design System ◽  
Low Carbon ◽  
Generation System ◽  
Power Generation System ◽  
Integrated Gasification ◽  
Sofc Stacks

Abstract This paper provides status update of IGFC power generation system being developed at National Institute of Clean-and-Low-Carbon (NICE) at MWth scale. This system is designed to use coal as fuel to produce syngas as a first step similar to integrated gasification combined cycles (IGCC). Subsequently, the solid oxide fuel cell system is used to convert chemical energy to electricity directly through electrochemical reaction without combustion, which is different from IGCC. This system leads to a higher efficiency as compared to a traditional coal-fired power plant. The unreacted fuel in the SOFC system is transported to an oxygen-combustor to be converted to steam and CO2. Through heat recovery system, the steam is condensed and removed, and CO2 is enriched and captured for sequestration or utilization, such as co-electrolysis of CO2 and H2O using curtailed renewable energy for production of syngas. Comprehensive economic analysis for a typical IGFC system was performed and the results were compared with supercritical pulverized coal-fired (SCPC) power plant, showing the cost of electricity (COE) of IGFC could be up to 20% lower than that by SCPC with CO2 capture. The SOFC stacks selected for IGFC development were tested and qualified under both hydrogen and simulated coal syngas fuel showing good consistency and stable long term performance. Experimental results using SOFC stacks and thermodynamic analysis (using ASPEN Plus) indicate that the hydrogen to CO ratio of the syngas is preferred to be 1.68 or higher to avoid carbon deposition inside of the fuel pipe. For lower H2/CO ratio, steam to CO ratio needs to be higher. Besides, the steam needs to be mixed well with the syngas above 100oC and below the temperatures where carbon formation is thermodynamically favored. The 20kW SOFC power generation unit is being developed with design system conditions of 20 kW maximum power, current density of 0.334 A/cm2, DC efficiency of 50.41%, and fuel utilization of 80%. A 100kW-level subsystem will consist of 6 x 20kW power generation units, and the MWth IGFC system will consist of 5 x 100kW-level subsystems.

scholarly journals Status of MWth Integrated Gasification Fuel Cell (IGFC) Power Generation System Demonstration in China

2020 ◽  
Author(s):  
Chang Wei ◽  
Zhien Liu ◽  
Chufu Li ◽  
Surinder Singh ◽  
Haoren Lu ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Power Plant ◽  
Cell System ◽  
Design System ◽  
Low Carbon ◽  
Generation System ◽  
Power Generation System ◽  
Integrated Gasification ◽  
Sofc Stacks

Abstract This paper provides status update of IGFC power generation system being developed at National Institute of Clean-and-Low-Carbon (NICE) at MW th scale. This system is designed to use coal as fuel to produce syngas as a first step similar to integrated gasification combined cycles (IGCC). Subsequently, the solid oxide fuel cell system is used to convert chemical energy to electricity electrochemically without combustion, which is different from IGCC. This system leads to a higher efficiency as compared to a traditional coal-fired power plant. The unreacted fuel in the SOFC system is transported to an oxygen-combustor to be converted to steam and CO 2 . Through heat recovery system, the steam is condensed and removed, and CO 2 is enriched and captured for sequestration or other application, such as co-electrolysis of CO 2 and H 2 O using curtailed renewable energy for production of syngas. Comprehensive economic analysis for a typical IGFC system was performed and the results were compared with supercritical pulverized coal-fired (SCPC) power plant, showing the cost of electricity (COE) of IGFC could be up to 20% lower than that by SCPC with CO 2 capture. The SOFC stacks selected for IGFC development were tested and qualified under both hydrogen and simulated coal syngas fuel showing good consistency and stable long term performance. Experimental results using SOFC stacks and thermodynamic analysis (using ASPEN Plus) indicate that the hydrogen to CO ratio of the syngas is preferred to be 1.68 or higher to avoid carbon deposition inside of the fuel pipe. For lower H 2 /CO ratio, steam to CO ratio needs to be higher. Besides, the steam needs to be mixed well with the syngas above 100 o C and below the temperatures where carbon formation is thermodynamically favored. The 20kW SOFC power generation unit is being developed with design system conditions of 20 kW maximum power, current density of 0.334 A/cm 2 , DC efficiency of 50.41%, and fuel utilization of 80%. A 100kW subsystem will consist of 6 x 20kW power generation units, and the MW th IGFC system will consist of 5 x 100kW sub-systems.

scholarly journals Status of an MWth integrated gasification fuel cell power-generation system in China

2021 ◽  
Author(s):  
Chang Wei ◽  
Zhien Liu ◽  
Chufu Li ◽  
Surinder Singh ◽  
Haoren Lu ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Power Plant ◽  
Combined Cycle ◽  
Low Carbon ◽  
Generation System ◽  
Integrated Gasification Combined Cycle ◽  
Power Generation System ◽  
Integrated Gasification ◽  
Sofc Stacks

AbstractHere, we provide a status update of an integrated gasification fuel cell (IGFC) power-generation system being developed at the National Institute of Clean-and-Low-Carbon in China at the megawatt thermal (MWth) scale. This system is designed to use coal as fuel to produce syngas as a first step, similar to that employed for the integrated gasification combined cycle. Subsequently, the solid-oxide fuel-cell (SOFC) system is used to convert chemical energy to electricity directly through an electrochemical reaction without combustion. This system leads to higher efficiency as compared with that from a traditional coal-fired power plant. The unreacted fuel in the SOFC system is transported to an oxygen-combustor to be converted to steam and carbon dioxide (CO2). Through a heat-recovery system, the steam is condensed and removed, and CO2 is enriched and captured for sequestration or utilization. Comprehensive economic analyses for a typical IGFC system was performed and the results were compared with those for a supercritical pulverized coal-fired power plant. The SOFC stacks selected for IGFC development were tested and qualified under hydrogen and simulated coal syngas fuel. Experimental results using SOFC stacks and thermodynamic analyses indicated that the control of hydrogen/CO ratio of syngas and steam/CO ratio is important to avoid carbon deposition with the fuel pipe. A 20-kW SOFC unit is under development with design power output of 20 kW and DC efficiency of 50.41%. A 100 kW-level subsystem will consist of 6 × 20-kW power-generation units, and the MWth IGFC system will consist of 5 × 100 kW-level subsystems.

scholarly journals Development of catalytic combustion and CO2 capture and conversion technology

2021 ◽  
Author(s):  
Zhibin Yang ◽  
Ze Lei ◽  
Ben Ge ◽  
Xingyu Xiong ◽  
Yiqian Jin ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Catalytic Combustion ◽  
Coal Gasification ◽  
Solid Oxide ◽  
Multi Scale ◽  
Electrolysis Cells ◽  
Integrated Gasification ◽  
Solid Oxide Electrolysis Cells ◽  
Sofc Stacks

AbstractChanges are needed to improve the efficiency and lower the CO2 emissions of traditional coal-fired power generation, which is the main source of global CO2 emissions. The integrated gasification fuel cell (IGFC) process, which combines coal gasification and high-temperature fuel cells, was proposed in 2017 to improve the efficiency of coal-based power generation and reduce CO2 emissions. Supported by the National Key R&D Program of China, the IGFC for near-zero CO2 emissions program was enacted with the goal of achieving near-zero CO2 emissions based on (1) catalytic combustion of the flue gas from solid oxide fuel cell (SOFC) stacks and (2) CO2 conversion using solid oxide electrolysis cells (SOECs). In this work, we investigated a kW-level catalytic combustion burner and SOEC stack, evaluated the electrochemical performance of the SOEC stack in H2O electrolysis and H2O/CO2 co-electrolysis, and established a multi-scale and multi-physical coupling simulation model of SOFCs and SOECs. The process developed in this work paves the way for the demonstration and deployment of IGFC technology in the future.

scholarly journals Numerical Modeling and Performance Prediction of COS Hydrolysis Reactor in an Integrated Gasification Fuel Cell in terms of Thermo-Chemical Transport Phenomena

2018 ◽  
Vol 8 (7) ◽  
pp. 1196 ◽  
Author(s):  
Jung-Hun Noh ◽  
Dong-Shin Ko ◽  
Seung-Jong Lee ◽  
Deog-Jae Hur
Keyword(s):  
Power Generation ◽  
Numerical Modeling ◽  
Fuel Cell ◽  
Space Velocity ◽  
Cell System ◽  
Design Parameters ◽  
Reactor Performance ◽  
Chemical Reaction Kinetics ◽  
Cos Hydrolysis ◽  
Integrated Gasification

During the recent decades, global warming by greenhouse gas evolution has attracted worldwide attention and ever increasing strict regulations thereon have become institutionalized as international policies. In the process, more environment-friendly power generation technologies have been developed utilizing fossil fuels with a view to timely commercialization. As one such “clean coal” technology, an Integrated Gasification Fuel Cell system is a promising power generation means where a carbonyl sulfide (COS) hydrolysis reactor is installed downstream of coal syngas to remove acidic gas constituents such as H2S and COS. The most significant design parameters affecting performance of the COS hydrolysis reactor were selected to be gas hourly space velocity (GHSV), reaction temperature, and length ratio, and numerical modeling was performed considering heat and fluid flow transfer as well as chemical reaction kinetics. Effect of the selected design parameters on the variation of conversion rate and reactant gas mixture concentration were comprehensively investigated to predict performance of the COS hydrolysis reactor. Stochastic modeling of reactor performance was finally performed using Monte Carlo simulation and linear regression fitting.

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