Integration of evaporative dryers into lignite-fired power plants: A review

Liu, Ming; Xu, Can; Han, Xinyan; Liu, Rongtang; Qin, Yuanzhi; Yan, Junjie

doi:10.1080/07373937.2019.1606824

Cited by 11 publications

(6 citation statements)

References 69 publications

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“…Here, we will summarize the review articles which appeared during 2019 with brief outlines of their content. As can be surmised from the list of references [3][4][5][6][7][8][9][10][11][12], the review articles cover a broad range of topics that should interest academia as we as industry.…”

Section: Facilitating Drying Randd Via Critical Review Papersmentioning

confidence: 99%

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Facilitating drying R&D via critical review papers

Shirkole

Mujumdar

2020

Drying Technology

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Section: Facilitating Drying Randd Via Critical Review Papersmentioning

confidence: 99%

“…Integration of evaporative dryers: waste heat from power plant can be utilized to dry lignite with increased efficiency by integrating evaporative dryers; this approach has noted to be technologically feasible [9].…”

Section: Facilitating Drying Randd Via Critical Review Papersmentioning

confidence: 99%

Facilitating drying R&D via critical review papers

Shirkole

Mujumdar

2020

Drying Technology

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“…However, rotary drying and fluidized bed are less energy-efficient (Rao et al 2015) and insufficiently remove volatile matter of coal. Coal drying and power plant integration were proposed to increase the energy and volatile matter removal efficiency (Liu et al 2020). Therefore, direct contact drying by utilizing volatile matter is expected to produce higher drying efficiency.…”

Section: Introductionmentioning

confidence: 99%

A Pilot Plant Study of Coal Dryer: Simulation and Experiment

Halim

Widyanti

Wahyudi

et al. 2022

ASEAN J. Chem. Eng.

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High moisture content in low-range coal causes low calorific value. To increase the quality, drying by a coal dryer to minimize moisture content is proposed. Here, a case study of a cyclone-like conical tube coal dryer pilot plant was reported. Drying heating uses combustion heat generated from volatile matter combustion. This approach will solve the two problems simultaneously: decreasing moisture content and volatile matter. The computational fluid dynamic (CFD) approach is used to study fluid dynamics inside the coal dryer using ANSYS Fluent 2020R2 software. The CFD simulation results represent the phenomenon of coal drying inside the coal dryer validated by the pilot plant experimental result. The simulation was carried out in steady and unsteady conditions to understand the drying phenomena. The simulation firmly fits the experimental result, especially in an unsteady state system, indicating that the simulation result is promising for further coal dryer design. The optimal condition produces a high moisture content reduction of 86.37%, uniform fluid distribution, and significant volatile matter combustion

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“…Lignite accounts for approximately 40% of the total coal reserves worldwide [2] and is considered a competitive raw material energy with a high security of supply [3]. However, power plants that dirrectly fire lignite have low efficiency compared to coal-fired power plants [4], which can be improved by pre-drying, i.e., to dry the fuel before it is introduced into the combustion process [5]. The increase in the efficiency of the entire system, estimated by various sources, is up to 6% [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Thermokinetics of Brown Coal during a Fluidized Drying Process

Plutecki

Sattler²,

Ryszczyk

et al. 2020

Energies

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This paper presents the results of research describing the thermokinetics of brown coal’s (lignite) drying process in a fountain-bubble fluidized bed dryer. The drying medium was atmospheric air of a variable temperature in subsequent tests, which ranged from 27 to 70 °C. This paper presents the results of many experimental studies for two different types of brown coal: xylite, from the Bełchatów mine, and earth, from the Turów mine. The two types of brown coal are used to assess different sized coal particles and different air drying temperatures. The functions parameterizing the moisture content of dried coal at different air drying temperatures at any given time are also presented.

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Integration of evaporative dryers into lignite-fired power plants: A review

Cited by 11 publications

References 69 publications

Facilitating drying R&D via critical review papers

Facilitating drying R&D via critical review papers

A Pilot Plant Study of Coal Dryer: Simulation and Experiment

Thermokinetics of Brown Coal during a Fluidized Drying Process

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