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Deposition and slagging in an entrained-flow gasifier with focus on heat transfer, reactor design and flow dynamics with SPH.

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Title: Deposition and slagging in an entrained-flow gasifier with focus on heat transfer, reactor design and flow dynamics with SPH.
Authors: Kurowski, M.-P.1 philipp.kurowski@tum.de, Spliethoff, H.1,2
Source: Fuel Processing Technology. Nov2016, Vol. 152, p147-155. 9p.
Subjects: Coal gasification plants, Gas flow, Heat transfer, Chemical reactor design & construction, Hydrodynamics, Computational fluid dynamics
Abstract: Two different types of coal are evaluated in a generic gasifier. The gas and discrete phase in a gasifying process was computed in ANSYS Fluent to determine particle trajectories and deposition rates at the wall. This information serves as input for the slagging tool developed by the authors to simultaneously compute the processes of deposit built-up and slag flow. The tool utilizes the method SPH (Smoothed Particle Hydrodynamics), and due to the particle nature of this method, each particle representing the slag gets its own physical properties such as viscosity or thermal conductivity. Thus the slag's surface and interfaces between solid and liquid layers can be determined without problems. The tool detects critical parts in the gasifier that show increased slag deposit and determines the thickness, temperature profile, and particle distribution of the slag layer. One Puertollano coal and one Colombian coal are evaluated in terms of their slagging propensities, which show different behavior in deposition build-up and flow dynamics. Areas with a low amount of slag matter inside the deposit produce an insulating effect, which changes the physical properties of the slag layer. Predicting the slagging propensities of different types of coal using data acquired from slag simulations can support the gasifier design process. [ABSTRACT FROM AUTHOR]
Copyright of Fuel Processing Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 117095746
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Deposition and slagging in an entrained-flow gasifier with focus on heat transfer, reactor design and flow dynamics with SPH.
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  Data: <searchLink fieldCode="DE" term="%22Coal+gasification+plants%22">Coal gasification plants</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+flow%22">Gas flow</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+reactor+design+%26+construction%22">Chemical reactor design & construction</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodynamics%22">Hydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Computational+fluid+dynamics%22">Computational fluid dynamics</searchLink>
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  Label: Abstract
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  Data: Two different types of coal are evaluated in a generic gasifier. The gas and discrete phase in a gasifying process was computed in ANSYS Fluent to determine particle trajectories and deposition rates at the wall. This information serves as input for the slagging tool developed by the authors to simultaneously compute the processes of deposit built-up and slag flow. The tool utilizes the method SPH (Smoothed Particle Hydrodynamics), and due to the particle nature of this method, each particle representing the slag gets its own physical properties such as viscosity or thermal conductivity. Thus the slag's surface and interfaces between solid and liquid layers can be determined without problems. The tool detects critical parts in the gasifier that show increased slag deposit and determines the thickness, temperature profile, and particle distribution of the slag layer. One Puertollano coal and one Colombian coal are evaluated in terms of their slagging propensities, which show different behavior in deposition build-up and flow dynamics. Areas with a low amount of slag matter inside the deposit produce an insulating effect, which changes the physical properties of the slag layer. Predicting the slagging propensities of different types of coal using data acquired from slag simulations can support the gasifier design process. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Fuel Processing Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.fuproc.2016.06.029
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      – Code: eng
        Text: English
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      – SubjectFull: Coal gasification plants
        Type: general
      – SubjectFull: Gas flow
        Type: general
      – SubjectFull: Heat transfer
        Type: general
      – SubjectFull: Chemical reactor design & construction
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      – SubjectFull: Hydrodynamics
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      – SubjectFull: Computational fluid dynamics
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      – TitleFull: Deposition and slagging in an entrained-flow gasifier with focus on heat transfer, reactor design and flow dynamics with SPH.
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              Text: Nov2016
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              Y: 2016
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