Date of download: 10/11/2017 Copyright © ASME. All rights reserved. From: Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram J. Energy Resour. Technol. 2017;139(6):062201-062201-9. doi:10.1115/1.4036957 Figure Legend: Hypothetical subprocesses of the detailed gasification model proposed by Prins and Ptasinski Tr and P are the gasification temperature and pressure, respectively

Date of download: 10/11/2017 Copyright © ASME. All rights reserved. From: Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram J. Energy Resour. Technol. 2017;139(6):062201-062201-9. doi:10.1115/1.4036957 Figure Legend: Algorithm flow chart of carbon gasification. The matlab algorithm flow chart of carbon gasification, which is calculated using the kinetic method and obeys mass conservation and the first and second law of thermodynamics. ni represents the mole number of the component i. Rj represents the reaction rate of Reaction j. e, A, dH, and Ex are the interim parameters obtained at every time period.

Date of download: 10/11/2017 Copyright © ASME. All rights reserved. From: Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram J. Energy Resour. Technol. 2017;139(6):062201-062201-9. doi:10.1115/1.4036957 Figure Legend: Variation of reaction extents ej with time under the base condition

Date of download: 10/11/2017 Copyright © ASME. All rights reserved. From: Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram J. Energy Resour. Technol. 2017;139(6):062201-062201-9. doi:10.1115/1.4036957 Figure Legend: Variation of mole numbers ni with time under the base condition

Date of download: 10/11/2017 Copyright © ASME. All rights reserved. From: Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram J. Energy Resour. Technol. 2017;139(6):062201-062201-9. doi:10.1115/1.4036957 Figure Legend: EUD of the gasification process. ΔH is the enthalpy change and A is the energy level of each subprocess. The shadow areas represent the exergy destructions of each subprocess.

Date of download: 10/11/2017 Copyright © ASME. All rights reserved. From: Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram J. Energy Resour. Technol. 2017;139(6):062201-062201-9. doi:10.1115/1.4036957 Figure Legend: Key simulation results including reaction temperature, overall exergetic efficiency, and chemical efficiency under the carbon deposition boundary conditions [16]. α and β are the coupled O2/C and H2O/C under the carbon deposition boundaries.

Date of download: 10/11/2017 Copyright © ASME. All rights reserved. From: Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram J. Energy Resour. Technol. 2017;139(6):062201-062201-9. doi:10.1115/1.4036957 Figure Legend: Relationship of chemical efficiency and reaction extents. e1, e3, and e8 are the reaction extents of the partial oxidation reaction, steam gasification reaction, and shift reaction, respectively.

Date of download: 10/11/2017 Copyright © ASME. All rights reserved. From: Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram J. Energy Resour. Technol. 2017;139(6):062201-062201-9. doi:10.1115/1.4036957 Figure Legend: Distribution of the exergy destruction and physical exergy output under five representative conditions. Each color represents a specific exergy destruction of the corresponding subprocess, and the origin color represents the physical exergy output.