Applied Coal Petrology
The Role of Petrology in Coal Utilization
- 408 pages
- English
- ePUB (mobile friendly)
- Available on iOS & Android
About This Book
This book is an integrated approach towards the applications of coal (organic) petrology and discusses the role of this science in the field of coal and coal-related topics.
Coal petrology needs to be seen as a continuum of organic (macerals) and inorganic (minerals and trace elements) contributions to the total coal structure, with the overprint of coal rank. All this influences the behavior of coal in utilization, the coal by-products, the properties of coal as a reservoir for methane or a sequestration site for carbon dioxide, and the relationships of coal utilization with health and environmental issues.
The interaction of coal properties and coal utilization begins at the mine face. The breakage of the coal in mining influences its subsequent beneficiation. Beneficiation is fundamental to the proper combustion of coal and is vital to the preparation of the feedstock for the production of metallurgical coke. An understanding of basic coal properties is important for achieving reductions in trace element emissions and improving the efficiency of combustion and combined-cycle gasification. The production of methane from coal beds is related to the properties of the in situ coal. Similarly, coal bed sequestration of carbon dioxide produced from combustion is dependent on the reservoir properties. Environmental problems accompany coal on its way from the mine to the point of utilization and beyond. Health aspects related with coal mining and coal utilization are also included because, in planning for coal use, it is impossible to separate environmental and health issues from the discussion of coal utilization.
The book is aimed at a wide audience, ranging from researchers, lecturers and students to professionals in industry and discusses issues (such as the environmental, and health) that are of concern to the general public as a whole.
- This book focuses on the applications of coal (organic) petrology to our modern society
- It is an integrated approach to help the reader appreciate the importance of coal quality and coal utilization. Coal composition (macerals, mineral, trace elements) and the overprint of coal rank are treated together
- The book synthesises all the possibilities of the organic petrology as a tool for coal utilization in conventional applications (mining and beneficiation, coal combustion, gasification, liquefaction, carbonization), as a precursor of carbon materials and as a petroleum source and reservoir rock
- The role of applied petrology in the characterization of solid by-products from coal utilization is also discussed
- In addition, this book describes the present status of environmental and health problems linked to coal utilization and the ways in which such problems might be overcome in the future
Frequently asked questions
Information
Chapter 1. Introduction to Applied Coal Petrology
1.1. Fundamental Concepts
- Rank. Coal rank reflects the degree of metamorphism (or coalification) to which the original mass of plant debris (peat) has been subjected during its burial history. This depends in turn on the maximum temperature to which it has been exposed and the time it has been held at that temperature and for most coals reflects the depth of burial and geothermal gradient prevailing at the time of coalification in the basin concerned. Heat flow from nearby igneous intrusions, however, may also play a part.
- Type. Coal type reflects the nature of the plant debris from which the original peat was derived, including the mixture of plant components (wood, leaves, algae, etc.) involved and the degree of degradation to which they were exposed before burial. The individual plant components occurring in coal, and in some cases fragments or other materials derived from them, are referred to as macerals (see Chapter 2); these form the fundamental starting point for many different coal petrology studies.
- Grade. The grade of a coal reflects the extent to which the accumulation of plant debris has been kept free of contamination by inorganic material (mineral matter), including the periods before burial (i.e., during peat accumulation), after burial, and during rank advance. A high-grade coal is therefore a coal, regardless of its rank or type, with a low overall proportion of mineral matter, and hence a high organic matter content.
1.2. Coal Resources, Mining, and Utilization
1.2.1. Coal Resources and Production
Table 1.1. Coal production, exports, and imports by country, 2006
Coal Production | Hard Coal (Mt) | Brown Coal (Mt) | Coal Exports | Hard Coal (Mt) | Coal Imports | Hard Coal (Mt) |
---|---|---|---|---|---|---|
People's Republic of China | 2,481 | (a) | Australia | 231 | Japan | 178 |
United States of America | 990 | 76 | Indonesia | 129 | Korea | 80 |
India | 427 | 30 | Russia | 92 | Taiwan | 64 |
Australia | 309 | 71 | South Africa | 69 | United Kingdom | 51 |
South Africa | 244 | 0 | People's Republic of China | 63 | Germany | 41 |
Russia | 233 | 76 | Colombia | 60 | India | 41 |
Indonesia | 169 | 0 | United States of America | 45 | People's Republic of China | 37 |
Poland | 95 | 61 | Canada | 27 | United States of America | 33 |
Kazakhstan | 92 | 5 | Kazakhstan | 26 | Russia | 26 |
Colombia | 64 | 0 | Vietnam | 22 | Italy | 25 |
Rest of world | 266 | 595 | Rest of world | 51 | Rest of world | 243 |
Total | 5,370 | 914 | Total | 815 | Total | 819 |
Table of contents
- Brief Table of Contents
- Table of Contents
- List of Figures
- List of Tables
- About the Editors
- Contributing Authors
- Acknowledgments
- Preface
- Chapter 1. Introduction to Applied Coal Petrology
- Chapter 2. Basic Factors Controlling Coal Quality and Technological Behavior of Coal
- Chapter 3. Mining and Beneficiation
- Chapter 4. Coal Combustion
- Chapter 5. Coal Gasification
- Chapter 6. Direct Coal Liquefaction
- Chapter 7. Coal Carbonization
- Chapter 8. Coal-Derived Carbon Materials
- Chapter 9. Coal as a Petroleum Source Rock and Reservoir Rock
- Chapter 10. Environmental and Health Impacts
- Chapter 11. Other Applications of Coal Petrology
- Bibliography