Numerical simulation of dense-phase pneumatic conveying in vertical pipe for gasifier

• Autorzy: Gao Yuzhen , Chan Choon Kit

Identyfikatory

DOI

10.2478/pjct-2023-0020

• Języki publikacji: EN

Abstrakty

EN

The stable transportation of pulverized coal in the vertical pipe is significant for the operation of the gasifier. There are few studies on the flow characteristics and flow pattern transition of particles in vertical pipes with small diameters. This paper has modeled and analyzed the flow characteristic of powder in dense-phase pneumatic conveying through 25 mm vertical pipe using CFD. Firstly, the grid independence is verified to determine the optimal mesh size. Then, the influences of different solid loading ratios (SLRs) and conveying velocities on particle flow characteristics, flow stability, and flow pattern transition are investigated. The results show that the flow pattern in the vertical pipe changes from annular flow to uniform flow at high SLR and low conveying velocity. Moreover, the evolution regulation of resistance characteristics under different conveying velocities is further revealed. Considering the conveying stability and economic benefit, the most suitable conveying velocity is 6 m/s

Słowa kluczowe

EN

Pneumatic conveying; Flow characteristics; Dense phase; High pressure; Process innovation

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2023
• Tom: Vol. 25, nr 3
• Strony: 14--22
• Opis fizyczny: Bibliogr. 30 poz., rys., tab., wz.

Twórcy

autor

Gao Yuzhen

• School of Mathematics and Statistics, Huangshan University, Huangshan 245041, China

autor

Chan Choon Kit

• Faculty of Engineering and Quantity Surveying, INTI International University, 71800, Nilai, Negeri Sembilan, Malaysia

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).