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Title: Analysis of maximum pressure drop for a flat-base spouted fluid bed

Authors:
; ORCiD logo;
Publication Date:
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1419101
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Chemical Engineering Research and Design
Additional Journal Information:
Journal Volume: 122; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-02-01 11:12:33; Journal ID: ISSN 0263-8762
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Monazam, Esmail R., Breault, Ronald W., and Weber, Justin. Analysis of maximum pressure drop for a flat-base spouted fluid bed. United Kingdom: N. p., 2017. Web. doi:10.1016/j.cherd.2017.03.032.
Monazam, Esmail R., Breault, Ronald W., & Weber, Justin. Analysis of maximum pressure drop for a flat-base spouted fluid bed. United Kingdom. doi:10.1016/j.cherd.2017.03.032.
Monazam, Esmail R., Breault, Ronald W., and Weber, Justin. Thu . "Analysis of maximum pressure drop for a flat-base spouted fluid bed". United Kingdom. doi:10.1016/j.cherd.2017.03.032.
@article{osti_1419101,
title = {Analysis of maximum pressure drop for a flat-base spouted fluid bed},
author = {Monazam, Esmail R. and Breault, Ronald W. and Weber, Justin},
abstractNote = {},
doi = {10.1016/j.cherd.2017.03.032},
journal = {Chemical Engineering Research and Design},
number = C,
volume = 122,
place = {United Kingdom},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.cherd.2017.03.032

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  • Spouted beds are a type of fluidized bed, but one which has certain advantages, viz., (1) the capability of handling coarse particles; (2) the capability of handling particles with complicated shapes; (3) the absence of the need to have a high flow-rate; and (4) a small pressure drop. The first and second of these advantages, in particular, are responsible for spouted beds having found use in industry in the drying of powdered materials, in granulation apparatus, in the roasting of mineral ores, and in waste incinerators, while their application in coal gasification and shale pyrolysis is, also, examined.
  • Requirements for silica gel desiccant beds used in the ''Solar-Desiccant-Evaporative Cooling System'' are discussed and the advantages of laminar flow packings demonstrated. An analysis of transient heat and mass transfer in laminar flow silica gel desiccant beds is presented, together with a description of an associated computer code for the solution of the governing partial differential equations. Based on results of calculations using the code, a preliminary design of a prototype scale desiccant bed is developed for a coated sheet packing concept. Results are presented for code calculations used to determine an optimum gel particle size and to explore themore » effect of substrate thermal capacity on cyclic performance.« less
  • In order to increase the movement of the particles in the annular region of a conical spouted bed, a mechanical stirrer was incorporated. This led to a study of the fluid dynamics of the conical spouted bed of inert particles under different operating conditions: mass of inert particles, ratio of inert particles to suspension volumes, type of stirrer (2 designs) and stirrer speed. The action of the stirrers resulted in increased movement of the particles, especially at low rpm values ({le}90 rpm), with the loss of the annular region, and thus approaching the beds behavior to that of a fluidizedmore » bed. To characterize this novel type of spouted beds, the minimum spouting flow (Q{sub ms}) parameter which is used usually was replaced by the minimum pseudo-fluidizing flow (Q{sub mpf}). The value of Q{sub mpf} decreases when the agitation in the bed increases. A correlation for Q{sub mpf} with the different operating conditions was developed. Drying suspensions in the stirred spouted bed shows a considerable increase of drying capacity, over units without agitation.« less
  • This paper demonstrates the use of coupled fluid flow andgeomechanical fault slip (fault reactivation) analysis to estimate themaximum sustainable injection pressure during geological sequestration ofCO2. Two numerical modeling approaches for analyzing faultslip areapplied, one using continuum stress-strain analysis and the other usingdiscrete fault analysis. The results of these two approaches to numericalfault-slip analyses are compared to the results of a more conventionalanalytical fault-slip analysis that assumes simplified reservoirgeometry. It is shown that the simplified analytical fault-slip analysismay lead to either overestimation or underestimation of the maximumsustainable injection pressure because it cannot resolve importantgeometrical factors associated with the injection induced spatialevolutionmore » of fluid pressure and stress. We conclude that a fully couplednumerical analysis can more accurately account for the spatial evolutionof both insitu stresses and fluid pressure, and therefore results in amore accurate estimation of the maximum sustainable CO2 injectionpressure.« less
  • Correlations for pressure drop, bed expansion, and minimum fluidization velocity in turbulent bed contactors are presented. They show the importance of the flow regime in which the bed is operated. The characteristics of each operating regime are discussed and compared with the characteristics of packed-bed columns.