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Experiment and Simulation of Dense Gas-Solid Two-phase Flow in a Rectangular Cross-flow Moving Bed

  • WANG Ruo-jin XU Jun LONG Wen-yu FAN Yi-ping LU Chun-xi
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  • State Key Laboratory of Heavy Oil, China University of Petroleum (Beijing) Beijing Auxin Chemical Technology Ltd. 3. Liaoning Shihua University State Key Laboratory of Heavy Oil, China University of Petroleum State Key Laboratory of Heavy Oil, China University of Petroleum (Beijing)

Received date: 2015-02-05

  Revised date: 2015-03-25

  Online published: 2015-06-20

Abstract

Based on the experimental result, Eulerian two-fluid model was used to investigate the cavity, pinning, flow streamlines, gas residence time and pressure distribution in a rectangular cross-flow moving bed. The results showed that the gas-solid two-phase flow was influenced by the end-effect. As the superficial gas velocity increased to about 0.19 and 0.31 m/s, the pinning and cavity appeared respectively. The cavity changed with time, while the pinning was virtually progressive. The shapes of both the cavity and pinning were determined greatly by the superficial gas velocity. The gas velocity distribution, cavity and pinning led to the pressure distribution profile in the shape of reverse C. The pressure drop ratio of the feed influencing zone to the gas-solid contact zone and discharge influencing zone was about 6:10:9. With increasing of the superficial gas velocity, the gas residence time decreased, both the cavity size and pressure drop increased, while the pinning thickness increased first and then remained almost unchanged. But the solids flux had little effect on the investigated parameters.

Cite this article

WANG Ruo-jin XU Jun LONG Wen-yu FAN Yi-ping LU Chun-xi . Experiment and Simulation of Dense Gas-Solid Two-phase Flow in a Rectangular Cross-flow Moving Bed[J]. The Chinese Journal of Process Engineering, 2015 , 15(3) : 361 -367 . DOI: 10.12034/j.issn.1009-606X.215136

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