Optic Diagnostics on Pulverized Coal Particles Combustion Dynamics and Alkali Metal Release Behavior

1. Auflage 2019
ISBN: 978-981-10-4812-8
Verlag: Springer Nature Singapore

Buch, Englisch, 151 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 436 g

Reihe: Springer Theses

This book focuses on pulverized coal particle devolatilization, ignition, alkali metal release behavior, and burnout temperature using several novel optic diagnostic methods on a Hencken multi-flat flame burner. Firstly, it presents a novel multi-filter technique to detect the CH* signal during coal ignition, which can be used to characterize the volatile release and reaction process. It then offers observations on the prevalent transition from heterogeneous ignition to hetero-homogeneous ignition due to ambient temperature based on visible light signal diagnostics. By utilizing the gap between the excitation energies of the gas and particle phases, a new low-intensity laser-induced breakdown spectroscopy (PS-LIBS) is developed to identify the presence of sodium in the particle or gas phase along the combustion process. For the first time, the in-situ verification of the gas phase Na release accompanying coal devolatilization is fulfilled when the ambient temperature is high enough.In fact, particle temperature plays a vital role in the coal burnout process and ash particle formation. The last part of the book uses RGB color pyrometry and the CBK model to study the char particle temperature on a Hencken burner. It offers readers valuable information on the technique of coal ignition and combustion diagnostics as well as coal combustion characteristics.

Zielgruppe

Research

Autoren/Hrsg.

Yuan, Ye

Fachgebiete

• Technische Wissenschaften Energietechnik | Elektrotechnik Technologien für Fossile Energieträger
• Naturwissenschaften Physik Elektromagnetismus Quantenoptik, Nichtlineare Optik, Laserphysik
• Technische Wissenschaften Verfahrenstechnik | Chemieingenieurwesen | Biotechnologie Verfahrenstechnik, Chemieingenieurwesen
• Technische Wissenschaften Energietechnik | Elektrotechnik Energietechnik & Elektrotechnik
• Technische Wissenschaften Maschinenbau | Werkstoffkunde Technische Mechanik | Werkstoffkunde Werkstoffprüfung
• Technische Wissenschaften Technik Allgemein Technische Optik, Lasertechnologie

Inhaltsverzeichnis

Introduction.- Theoretical and experimental research on coal particle devolatilization.- Theoretical and experimental research on coal particle ignition mechanism.- Dynamic behavior of sodium release during coal combustion.- Theoretical and experimental research on surface temperature during char combustion.- Conclusion.

Über Autor(innen)

Dr. Ye Yuan received his Ph.D. degree from the Department of Thermal Engineering, Tsinghua University, Beijing in 2016 and is currently working at the Huaneng Clean Energy Research Institute, Beijing. His Ph.D thesis was awarded “Excellent Doctoral Dissertation of Tsinghua University” in 2016.