Industrial Coal Gasification Technologies Covering Baseline and High-Ash Coal

Coal gasification is the process for production of syngas, a mixture of hydrogen, carbon monoxide and dioxide, from coal and water. It is a clasical example for the interaction of basic chemistry, chemical engineering, ecological and economic aspects. This monograph provides the reader with the neccessary basic scientific background and displays with industry–proven examples efficiency, but also boundaries of models.Special emphases are a comprehensive overview on latest technology developments, and the introduction of an innovative, new order scheme for evaluation of the gasification process at one glance – the ternary diagram. As the use of poor, ash–rich coal gained substantial interest within the last years, a systematic thermoynamic and exergetic comparison between a baseline coal and a coal of elevated ash content is another key part of the book. INDICE: INTRODUCTION COAL GASIFICATION IN A GLOBAL CONTEXT Applications of Coal Gasification The Three Generations of Coal Gasifiers Typical Feedstock and Products Main Markets for Coal Gasification Challenges and Opportunities for Coal Gasification COAL CHARACTERISTICS FOR GASIFICATION Coal as Gasification Feedstock Proximate Analysis Ultimate Analysis Calorific Values Reactivity Maceral Analysis Mineral Analysis Relevant Physical Properties FUNDAMENTALS Gasification Reactions Gasification Parameters Classifying Gasification Methods Bed Type Temperature Range Feeding Method Wall Type Syngas Cooling Oxidant Solid Residue Removal COAL GASIFICATION MODELING Balancing of Gasification Systems Thermodynamic Modeling Minimization of Gibbs Free Energy Equilibrium Constant–Based Calculations Kinetic Modeling Fundamentals Particle Models Heterogeneous Reaction Kinetics Homogeneous Reaction Kinetics CFD Modeling of Coal Gasifiers Background Typical Case Setup Generic Models for Case Studies Modeling Approach Limitations of the Concept Sensitivity to Boundary Conditions Conclusion COAL GASIFICATION TECHNOLOGY SURVEY Entrained–Flow Gasifiers Shell and Uhde Coal Gasification Technology Siemens Fuel Gasification Technology GE Energy Technology ConocoPhillips E–Gas Technology Other Entrained–Flow Technologies Fluid–Bed Gasifiers HTW Technology Other Fluid–Bed Technologies Moving–Bed Gasifiers Lurgi FBDB Technology BGL Technology THERMODYNAMIC PROCESS ASSESSMENT Introduction of a Ternary Gasification Diagram Basic Idea Domain Overview and Pressure Sensitivity Diagram Types Domain Boundaries for Gasification Systems Displaying Gasifiers with Multiple Inlets Optimum User Diagrams Optimum User Correlations Diagrams for Pittsburgh#8 Coal Temperature and Carbon Conversion Diagram Cold Gas Efficiency and Methane Yield Diagram Syngas Yield and H2/CO Diagram Optimum User Diagram Diagrams for South African Coal Temperature and Carbon Conversion Diagram Cold Gas Efficiency and Methane Yield Diagram Syngas Yield and H2/CO Diagram Optimum User Diagram Technology Potential Analysis Influence of the Ash Content Other Gasification Systems Conclusions EXERGETIC PROCESS ASSESMENT Exergy Calculations Reference Environment Exergy of Gaseous and Liquid Streams Exergy of Solid Streams Definition of Efforts and Benefits Impact of Gas Cooling Methods Comparison of Gasification Systems Conclusions CONCEPT STUDY: THE INTERNAL CIRCULATION (INCI) GASIFIER Basic Principle Detailed Process Description Application of the Reh Diagram Thermodynamic Modeling of the INCI Gasifier Scale–up Conclusion for INCI Design TRENDS FOR GASIFICATION DEVELOPMENT

• ISBN: 978-3-527-33690-6
• Editorial: Wiley VCH
• Encuadernacion: Cartoné
• Páginas: 362
• Fecha Publicación: 22/10/2014
• Nº Volúmenes: 1
• Idioma: Inglés