Fine coal dry cleaning using a vibrated gas-fluidized bed

Yang, Xuliang; Zhao, Yuemin; Z, Luo; Song, Shulei; Chen, Duan; Dong, Liang

doi:10.1016/j.fuproc.2012.08.019

Cited by 96 publications

(38 citation statements)

References 13 publications

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“…To avoid the impacts of surface moisture on the separation performance, the coal sample was air-dried. The particles were initially fluidized for 2 min according to our pervious study [22], and the fluidizing air was suddenly shut down. This static bed was divided into five layers in the axial direction.…”

Section: Methodsmentioning

confidence: 99%

“…Weight fractions x D were measured. In our previous studies [22], the separation performance was evaluated by a statistical indicator (S), which is defined as follows:…”

Section: Methodsmentioning

confidence: 99%

“…The segregation based on density difference is generally called ''density segregation,'' whereas that based on size difference is called ''size segregation.'' Yang et al [22] examined the separation performance of fine high-rank coals in a vibro-fluidized bed. Their studies indicated that the separation performance largely depends on operational parameters and feed particle properties.…”

Section: Introductionmentioning

confidence: 99%

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Dry cleaning of fine lignite in a vibrated gas-fluidized bed: Segregation characteristics

Zhao

Chen

et al. 2015

Fuel

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Section: Methodsmentioning

confidence: 99%

“…Weight fractions x D were measured. In our previous studies [22], the separation performance was evaluated by a statistical indicator (S), which is defined as follows:…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dry cleaning of fine lignite in a vibrated gas-fluidized bed: Segregation characteristics

Zhao

Chen

et al. 2015

Fuel

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“…Yang et al , , introduced vibration energy into a gas‐fluidized bed of Geldart D type particles in order to improve the fluidization behavior. In their study, an i‐Speed 3 high speed camera was adopted to examine the fluidization process.…”

Section: Density‐segregation Gas‐fluidized Bed Cleaningmentioning

confidence: 99%

Dry Cleaning of Fine Coal Based on Gas‐Solid Two‐Phase Flow: A Review

Yang

Zhao

2017

Chem Eng & Technol

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Dry cleaning of coal becomes increasingly significant to improve energy efficiency and reduce air pollutant emissions. Fine coal dry cleaning processes are mostly based on gas‐solid two‐phase flow and mainly classified into the following three categories. Modified air‐dense medium‐fluidized bed cleaning has high cleaning accuracy, but confronts the problems of product purification and medium recovery. Density‐segregation gas‐fluidized bed cleaning does not use artificial medium solids and is characterized by a simple process and stable performance. However, its cleaning accuracy is relatively low. Air table cleaning also uses no artificial medium and separates fine coal depending on the differences in density and coefficient of friction. Its cleaning accuracy is approximate to that of density‐segregation gas‐fluidized bed cleaning but has more influential factors.

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“…For the size of 1-3 mm, the dry beneficiation method using a special vibration fluidized bed can be found in our previous studies [14,36]. After fluidization for a certain time, this bed was divided into five layers in the axial direction and the ash content of each layer was measured.…”

Section: Lignite Propertiesmentioning

confidence: 99%