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Dual Fluidized Bed Gasification of Solid Fuels

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Coal and Biomass Gasification

Part of the book series: Energy, Environment, and Sustainability ((ENENSU))

Abstract

In dual fluidized bed gasification technology, the gasification/pyrolysis and combustion reactions are decoupled and conducted in two separate fluidized bed reactors connected by circulating inert or catalytic bed material. Hence, a nitrogen-free high-quality syngas is produced. The configuration obviates the need of a capital-intensive air separation unit. It is a complex reactor system, and the challenge lies in selecting appropriate bed material/catalyst, understanding flow patterns and heat transfer characteristics, and designing and operating such a system. This chapter reviews the basic concept, critical components, hydrodynamics, and process characteristics of this technology presenting the current state of the art.

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Abbreviations

AER:

Adsorption Enhanced Reforming

BFB:

Bubbling Fluidized Bed

CFB:

Circulating Fluidized Bed

CFM:

Cold Flow Model

CV:

Calorific Value

db:

Dry basis

DFB:

Dual Fluidized Bed

DFBG:

Dual Fluidized Bed Gasifier

ECN:

Energy Research Center of the Netherlands

FT:

Fischer Tropsch

HDS:

Hydrodesulfurization

PAH:

Polycyclic Aromatic Hydrocarbons

SNG:

Synthetic Natural gas

VTU:

Vienna University of Technology (TU Wien)

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Acknowledgements

The authors would like to acknowledge joint financial support from Ministry of Human Resource and Development and Ministry of Coal under the IMPRINT initiative by Government of India (Project No: MHRD/ME/2016408B, Title: Development of pressurized dual fluidized bed gasifier for high-ash Indian coal)

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Authors and Affiliations

  1. Indian Institute of Technology Kanpur, Kanpur, 208016, UP, India

    Sminu Bhaskaran, Saurabh Gupta & Santanu De

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  1. Sminu Bhaskaran
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  2. Saurabh Gupta
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Correspondence to Santanu De .

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Editors and Affiliations

  1. Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India

    Santanu De

  2. Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India

    Avinash Kumar Agarwal

  3. Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India

    V. S. Moholkar

  4. Bio-Fuels Division, CSIR-Indian Institute of Petroleum (IIP), Dehradun, Uttarakhand, India

    Bhaskar Thallada

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Bhaskaran, S., Gupta, S., De, S. (2018). Dual Fluidized Bed Gasification of Solid Fuels. In: De, S., Agarwal, A., Moholkar, V., Thallada, B. (eds) Coal and Biomass Gasification. Energy, Environment, and Sustainability. Springer, Singapore. https://doi.org/10.1007/978-981-10-7335-9_17

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