Dry Syngas Purification Processes for Coal Gasification Systems

Dry Syngas Purification Processes for Coal Gasification Systems

1st Edition - October 18, 2020

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  • Author: Makoto Kobayashi
  • Paperback ISBN: 9780128188668
  • eBook ISBN: 9780128188675

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Dry Syngas Purification Processes for Coal Gasification Systems illustrates the promising development status of dry syngas purification for various power generation systems based on coal gasification. The core advantages of dry syngas purification, methodologies for impurity measurement, sorbents development, and evaluation of process performance are described in-depth, and from a practical perspective that is based on current research and development. Reviewing key findings from process integration, the book encompasses scale-up strategies from pilot processes to achieve dry syngas processing for new build plants. The book provides researchers and engineers with practical information to realize dry syngas purification processes for each context.

Key Features

  • Delivers pathways to realize dry syngas purification processes customized to specific power plant contexts
  • Provides analytical tools to facilitate plant operators in examining and interpreting the relevant impurities of coal gasification and gas treatment processes
  • Illustrates rational strategies for developing capable and durable dry removal sorbent for syngas impurities
  • Describes process design and integration through key engineering evaluation
  • Describes scale-up strategies of dry syngas processing for their deployment in new plants
  • Provides prospects on the development of future coal energy conversion system adopting dry syngas purification processes


Power plant engineers who are developing advanced power or chemical generation systems based on coal gasification technologies, such as IGCC, IGFC, and XTL. Power generating companies and the operators of plants, coal gasification process or coal processing staff. Some academic interest

Table of Contents

  • Chapter 1. Introduction
    1.1 Coal-derived syngas
    1.2 Requirement for syngas cleaning for coal gasification systems
    1.3 Wet syngas purification process
    1.4 History of dry syngas purification processes
    1.5 Tasks to develop a dry syngas purification process
    Chapter 2. Advantage of dry syngas purification
    2.1 Retaining sensible heat and steam concentration
    2.2 Simultaneous removal and separation of impurities
    2.3 Lower reproduction of wastes
    2.4 Elimination of wastewater treatment
    2.5 Compact plant size
    Chapter 3. Measurements of impurities in syngas
    3.1 Syngas composition and moisture
    3.2 Sulfur compounds
    3.3 Halides
    3.4 Ammonia and nitrogen compounds
    3.5 Mercury
    3.6 Other expected impurities and status of identification
    3.7 Related gas analyzer for process control
    Chapter 4. Development of sorbents used in dry syngas purification
    4.1 Metal oxide—based sulfur removal sorbents
    4.2 Alkali metal—based halide removal sorbents
    4.3 Sorbents for mercury and other trace elements
    4.4 Countermeasures for side reactions
    Chapter 5. Methodology for evaluation of sorbents performances
    5.1 Performance indicators: achievable concentration, capacity, and kinetics
    5.2 Preliminary evaluation: thermogravimetric analysis
    5.3 Breakthrough characteristics: fixed-bed reactor test
    5.4 Material balance: sorbent analysis
    5.5 Reaction mechanisms: in situ measurements
    5.6 Performance prediction: pore structure analysis
    Chapter 6. Process development
    6.1 Reactor design
    6.2 Sorbent installation
    6.3 Flow control in a honeycomb reactor
    6.4 Process monitoring system
    6.5 Process control strategy
    6.6 Process integration
    Chapter 7. Scaling up strategies
    7.1 Expected issues for scaling up
    7.2 Cyclic operation of sulfur removal process at bench-scale test facility
    7.3 Verification of heat balance at pilot plant
    7.4 Confirmation of start-up procedure at demonstration plant
    7.5 Economic evaluation of dry syngas purification process
    7.6 Case study of oxy-fuel integrated gasification combined cycle
    Chapter 8. Application of dry syngas purification
    8.1 Oxy-fuel integrated gasification combined cycle with CO2 separation at low energy consumption
    8.2 Zecomag and Zecomix cycles
    8.3 Integrated gasification fuel cell power generation
    8.4 Miscellaneous systems including polygeneration
    8.5 Future options for the coal energy conversion process

Product details

  • No. of pages: 288
  • Language: English
  • Copyright: © Elsevier Science 2020
  • Published: October 18, 2020
  • Imprint: Elsevier Science
  • Paperback ISBN: 9780128188668
  • eBook ISBN: 9780128188675

About the Author

Makoto Kobayashi

Makoto Kobayashi is primarily interested in the syngas purification system for integrated gasification combined cycle power generation. He was involved in operating dry gas cleaning process for syngas produced at prototype of MHI type air-blown coal gasifier from 1987 to 1989. A series of dry-removal sorbents for halides, mercury, and sulfur compounds were developed through the research projects that were conducted by him for IGCC, IGFC and biomass gasification fuel cell power generation. In particular, he has developed durable and regenerable sorbents for dry sulfur removal process in 1990s, which is capable of reducing sulfur compounds to tolerant level of high temperature fuel cell. The sorbent was further improved in resistance to carbon deposition in syngas and was applied to current test facility of dry syngas purification process for advanced IGCC. He also contributed basic design and economical evaluation of IGCC equipped with dry syngas process. His current research project is the verification of dry acid gas removal processes that are suitable to treat syngas for efficient IGCC power generation plants with CO2 capturing feature.

Affiliations and Expertise

Associate Vice President, Central Research Institute of Electric Power Industry, Energy Engineering Research Laboratory, Yokosuka, Japan

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