Fundamental ash deposition characteristics in pulverized coal reaction under high temperature conditions

Naruse, Ichiro; Kamihashira, Daisuke; Miyauchi, Yoshiki; Kato, Y.; Yamashita, Toru; Tominaga, Hiroaki

doi:10.1016/j.fuel.2004.09.007

Cited by 72 publications

(27 citation statements)

References 5 publications

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“…To date, in order to solve a number of practical problems, various research has been conducted. These include the analysis of ash adhesion behavior under the boiler combustion condition [3], measurements of the time variables for ash deposition in commercial use boilers [4], evaluation of the ash adhesion mechanism in pulverized reactions [5], and analysis of the ash adhesion phenomenon in boiler models [6]. However, in recent times, given the increases in steam temperature conditions to further improve power generation efficiency, and a greater use of a mixture of solid fuels, such as a combination of subbituminous coals with a high ash adhesion and wood biomasses [7], the possibility of greater ash deposition within the pulverized coal boiler has increased.…”

Section: Introductionmentioning

confidence: 99%

Control of ash deposition in pulverized coal fired boiler

Naganuma

Ikeda

Kawai

et al. 2009

Proceedings of the Combustion Institute

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Section: Introductionmentioning

confidence: 99%

Control of ash deposition in pulverized coal fired boiler

Naganuma

Ikeda

Kawai

et al. 2009

Proceedings of the Combustion Institute

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“…Furthermore, due to the inadequacy of kinetic and surface energies of the arriving particles to create a sufficient spread ratio, the smaller particles e unable to detach themselves from the surface during recoiling e stick to the surface. In a study of deposition of ashes generated from three types of coals having different ash melting temperatures and ash content, Naruse et al [37] reported that irrespective of coal type, fine particles in the size range of 3 mm triggered the initial deposition at the stagnant point of tube. In accordance with that, Waclawiak [38] reported that powder deposits are built up with an average particle diameter of less than 20 mm.…”

Section: Resultsmentioning

confidence: 99%

Mechanistic modeling, numerical simulation and validation of slag-layer growth in a coal-fired boiler

Balakrishnan

Nagarajan

Karthick

2015

Energy

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“…In low-rank coals, mineral grains also interact with organically associated elements. The size and composition of all these intermediate species directly influence slagging and fouling problems in combustion systems [13,14].…”

Section: Effect On Foulingmentioning

confidence: 99%

Overview of Solid Fuels Combustion Technologies

Vamvuka

2010

Handbook of Combustion

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Energy drives human life and is crucial for continued human development. It is the convertible currency of technology. Without energy the whole fabric of society would crumble. Global demand for energy is rapidly increasing with increasing human population, urbanization, and modernization. This growth is projected to rise sharply over the coming years in developing countries. The world heavily relies on fossil fuels to meet its energy requirements -oil, gas, and coal are providing almost 80% of the global energy demands. Oil and natural gas prices are continuously rising, due to the rapid worldwide increase in their consumption. Coals, covering about 65% of the proven fossil fuel reserves and being widely distributed throughout the world, provide stability in price and availability and will therefore play a major role in the global energy system in the coming decades. Furthermore, given the energy crisis, the development and use of renewable energy sources is one of the key challenges in the shorter and medium term to substitute fossil fuels, to provide commercially attractive options for meeting specific energy service needs, and to mitigate greenhouse gas emissions. Biomass, including all kinds of materials that were directly or indirectly derived not too long ago from contemporary photosynthesis reactions, such as vegetable matter and its derivatives, is a widely dispersed, naturally occurring carbon resource with great energy potential. It is also considered as a CO 2 -neutral energy source. The simple act of burning biomass to obtain heat and often light is one of the oldest biomass conversion processes known to mankind.Thus, the study of coal and biomass combustion for power generation or heating processes is of extreme importance, if we are to conserve our sources of energy, while achieving the required environmental goal efficiently and reliably in a world of increasing population and energy needs. This chapter provides a survey of the technologies that are either available or are being developed to enable all solid fuels to be used cleanly and with greater amenity.

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Fundamental ash deposition characteristics in pulverized coal reaction under high temperature conditions

Cited by 72 publications

References 5 publications

Control of ash deposition in pulverized coal fired boiler

Control of ash deposition in pulverized coal fired boiler

Mechanistic modeling, numerical simulation and validation of slag-layer growth in a coal-fired boiler

Overview of Solid Fuels Combustion Technologies

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