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Title: Evaluation of control of fluidization quality through chaotic time series analysis of pressure-drop measurements

Abstract

Recent applications of chaotic time series analysis to pressure-drop and voidage measurements from gas-fluidized beds have demonstrated that such data exhibit many of the signature characteristics of deterministic chaos. Research is now being sponsored by the US Department of Energy to determine if knowledge and control of chaotic structure in fluidized beds can be used to improve the performance of fossil energy conversion processes using fluidized beds. In this paper we discuss the use of chaotic time series analysis for evaluating fluidization quality. In particular, we show that certain chaotic features in pressure-drop measurements can be used to determine the type of fluidization (e.g., slugging, smoothly bubbling, turbulent) both locally and globally in the bed. We also suggest examples of how this information can be used for implementing closed-loop control of fluidized-bed hydrodynamics.

Authors:
 [1];  [2]
  1. Oak Ridge National Lab., TN (United States)
  2. USDOE Morgantown Energy Technology Center, Morgantown, West Virginia (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10110401
Report Number(s):
CONF-921104-10
ON: DE93004174
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Conference
Resource Relation:
Conference: American Institute of Chemical Engineers annual meeting,Miami, FL (United States),1-6 Nov 1992; Other Information: PBD: [1992]
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; FLUIDIZED-BED COMBUSTION; FLUIDIZED BEDS; PRESSURE DROP; FLUIDIZATION; TIME-SERIES ANALYSIS; DATA ACQUISITION SYSTEMS; ENTROPY; CONTROL; 014000; COMBUSTION

Citation Formats

Daw, C S, and Halow, J S. Evaluation of control of fluidization quality through chaotic time series analysis of pressure-drop measurements. United States: N. p., 1992. Web.
Daw, C S, & Halow, J S. Evaluation of control of fluidization quality through chaotic time series analysis of pressure-drop measurements. United States.
Daw, C S, and Halow, J S. 1992. "Evaluation of control of fluidization quality through chaotic time series analysis of pressure-drop measurements". United States.
@article{osti_10110401,
title = {Evaluation of control of fluidization quality through chaotic time series analysis of pressure-drop measurements},
author = {Daw, C S and Halow, J S},
abstractNote = {Recent applications of chaotic time series analysis to pressure-drop and voidage measurements from gas-fluidized beds have demonstrated that such data exhibit many of the signature characteristics of deterministic chaos. Research is now being sponsored by the US Department of Energy to determine if knowledge and control of chaotic structure in fluidized beds can be used to improve the performance of fossil energy conversion processes using fluidized beds. In this paper we discuss the use of chaotic time series analysis for evaluating fluidization quality. In particular, we show that certain chaotic features in pressure-drop measurements can be used to determine the type of fluidization (e.g., slugging, smoothly bubbling, turbulent) both locally and globally in the bed. We also suggest examples of how this information can be used for implementing closed-loop control of fluidized-bed hydrodynamics.},
doi = {},
url = {https://www.osti.gov/biblio/10110401}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 31 00:00:00 EST 1992},
month = {Thu Dec 31 00:00:00 EST 1992}
}

Conference:
Other availability
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