Journal ArticleDOI
Prediction of ash deposition on superheater tubes from pulverized coal combustion
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In this article, a numerical model has been developed to describe the main deposition processes of ash particles with a predetermined chemical composition, including thermophoresis and inertial impaction.About:
This article is published in Fuel.The article was published on 1996-02-01. It has received 129 citations till now. The article focuses on the topics: Pulverized coal-fired boiler & Thermophoresis.read more
Citations
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Journal ArticleDOI
Rheological properties of high-temperature melts of coal ashes and other silicates
TL;DR: In this article, a review of the 20th century advances within the field of measurement and the prediction of the rheological properties of high-temperature (T>1000 K ) silicate melts at atmospheric pressure with a focus on coal ashes and other melts of compositions relevant to coal ashes is presented.
Journal ArticleDOI
Ash formation and deposition in coal and biomass fired combustion systems: Progress and challenges in the field of ash particle sticking and rebound behavior
TL;DR: In this paper, the authors present an overview of major ash forming elements found in biomass and coal, and discuss the heterogeneity of particles' inorganic composition, as well as their mathematical description, together with composition-and temperature-depended models for the estimation of ash particle and deposit properties.
Journal ArticleDOI
Relationship between coal ash composition and ash fusion temperatures
TL;DR: In this article, a five-component SiO2-Al2O3-CaO-Fe2O-3-K2O system is set for coal ash fusion characterization and the ash fusion temperatures.
Journal ArticleDOI
Investigation of ash deposit formation during co-firing of coal with sewage sludge, saw-dust and refuse derived fuel
TL;DR: In this article, two ceramic deposition probes have been used to investigate the initial stages of slagging at 1300°C and 1200°C, at 0.5 s and 2 s residence times, respectively.
Journal ArticleDOI
Modeling of ash formation and deposition processes in coal and biomass fired boilers: A comprehensive review
Yongtie Cai,Kun Lin Tay,Zhimin Zheng,Wenming Yang,Hui Wang,Guang Zeng,Zhiwang Li,Siah Keng Boon,Prabakaran Subbaiah +8 more
TL;DR: In this article, a comprehensive review on the development of the modelling of ash deposition with particle combustion, sticking, rebound and removal behaviors is presented, including the modeling of ash deposit morphomology.
References
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Journal ArticleDOI
Deposition of bituminous coal ash on an isolated heat exchanger tube: Effects of coal properties on deposit growth
TL;DR: In this paper, the authors used a steam-cooled tube at the exit of a pilot scale furnace during combustion of bituminous coal to identify coal properties and combustion conditions with which one may anticipate fouling and slagging of superheaters in electric utility boilers.
Journal ArticleDOI
Mineral behavior during coal combustion 2. Illite transformations
Srivats Srinivasachar,Joseph J. Helble,A.A. Boni,Naresh Shah,Gerald P. Huffman,Frank E. Huggins +5 more
TL;DR: The physical and chemical transformation of excluded crystalline illite particles and of illite grains included within a carbon matrix were examined in a laboratory scale reactor as discussed by the authors, where electron microscopy was used to determine the particle morphology and energy dispersive X-ray analysis, Mossbauer spectroscopy, and XAFS expectroscopy were used to monitor the chemical changes.
Book
Fundamentals of coal combustion : for clean and efficient use
TL;DR: In this article, the authors present a suite of commonly used research coal types and discuss their properties, including coal properties, structure, reaction rates, and properties of the coal deposits, as well as their application to practical systems.
Journal ArticleDOI
A mechanistic description of ash deposition during pulverized coal combustion: predictions compared with observations☆
TL;DR: In this article, a three-week test burn of a Wyoming coal in a power plant boiler designed for midwestern and eastern coal is described, and the measured elemental composition of the ash deposits from the Wyoming coal is within 5% (absolute) of the predicted composition.
Related Papers (5)
Modeling of ash deposition in large-scale combustion facilities burning pulverized coal
Huafeng Wang,John N. Harb +1 more