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Experimental Flow Structure Analysis in a 1 MWth Circulating Fluidized Bed Pilot Plant

Daikeler, Alexander and Ströhle, Jochen and Epple, Bernd :
Experimental Flow Structure Analysis in a 1 MWth Circulating Fluidized Bed Pilot Plant.
[Online-Edition: https://doi.org/10.1016/j.ces.2018.10.037]
In: Chemical Engineering Science ISSN 00092509
[Article] , (2018) (In Press)

Official URL: https://doi.org/10.1016/j.ces.2018.10.037

Abstract

A water-cooled dual-channel capacitance probe system was developed for in-furnace measurements of solids concentration and solids velocity in a 1 MWth dual fluidized bed pilot plant. Measurements were conducted in both reactors of the pilot plant during carbonate looping and combustion test campaigns. Solids velocities were derived by cross correlating the signals of the two channels of the capacitance probe. Thus, horizontal profiles of solids concentration and velocity were simultaneously determined in the reactors. These profiles show a strong core annulus flow structure in both reactors of the pilot plant. The influence of bed material characteristics, operating conditions as well as riser geometries on the particle flow structure is evaluated.

Item Type: Article
Erschienen: 2018
Creators: Daikeler, Alexander and Ströhle, Jochen and Epple, Bernd
Title: Experimental Flow Structure Analysis in a 1 MWth Circulating Fluidized Bed Pilot Plant
Language: English
Abstract:

A water-cooled dual-channel capacitance probe system was developed for in-furnace measurements of solids concentration and solids velocity in a 1 MWth dual fluidized bed pilot plant. Measurements were conducted in both reactors of the pilot plant during carbonate looping and combustion test campaigns. Solids velocities were derived by cross correlating the signals of the two channels of the capacitance probe. Thus, horizontal profiles of solids concentration and velocity were simultaneously determined in the reactors. These profiles show a strong core annulus flow structure in both reactors of the pilot plant. The influence of bed material characteristics, operating conditions as well as riser geometries on the particle flow structure is evaluated.

Journal or Publication Title: Chemical Engineering Science
Uncontrolled Keywords: circulating fluidized bed, 1 MWth CFB pilot plant, solids volume concentration and velocity, capacitance probe
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institut für Energiesysteme und Energietechnik (EST)
Profile Areas
Profile Areas > Thermo-Fluids & Interfaces
Date Deposited: 08 Nov 2018 13:49
DOI: 10.1016/j.ces.2018.10.037
Official URL: https://doi.org/10.1016/j.ces.2018.10.037
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