Low impact velocity wastage in FBCs: experimental results and comparison between abrasion and erosion theories

José G. Chacón-Nava, F. Almeraya-Calderón, Alberto Martínez-Villafañe, Margaret Stack

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

Abstract

The use of technologies related to combustion of coal in fluidized bed combustors (FBCs) present attractive advantages over conventional pulverized coal units. Some of the outstanding characteristics are: excellent heat transfer, low emission of contaminants, good combustion efficiencies and good fuel flexibility. However, FBC units can suffer materials deterioration due to particle interaction of solid particles with the heat transfer tubes immersed on the bed (Hou, 2004, Oka, 2004, Rademarkers et al., 1990). Among other issues, some of the most important factors believed to cause wear problems are: the motion of slowly but relatively coarse particles, particles loaded onto the surface by other particles, erosion by relatively fast-moving particles associated with bubbles, and abrasion by blocks of particles thrown into the surface by bubble collapse. Thus, erosion or abrasion processes can occur by a variety of causes. For the case of particle movement against in-bed surfaces, it has been suggested that there is no difference in the ability to cause degradation between solid particle erosion and low stress three body abrasion, and distinctions between the two forms of wear should not to be made (Levy, 1987).
LanguageEnglish
Title of host publicationAbrasion resistance of materials
Place of PublicationCroatia
Number of pages24
Publication statusPublished - Mar 2012

Fingerprint

Fluidized bed combustors
Abrasion
Erosion
Coal
Wear of materials
Particle interactions
Tubes (components)
Deterioration
Impurities
Heat transfer
Degradation

Keywords

  • abrasion
  • erosion
  • fluidized bed combustors (FBCs)
  • heat transfer

Cite this

Chacón-Nava, J. G., Almeraya-Calderón, F., Martínez-Villafañe, A., & Stack, M. (2012). Low impact velocity wastage in FBCs: experimental results and comparison between abrasion and erosion theories. In Abrasion resistance of materials Croatia.
Chacón-Nava, José G. ; Almeraya-Calderón, F. ; Martínez-Villafañe, Alberto ; Stack, Margaret. / Low impact velocity wastage in FBCs : experimental results and comparison between abrasion and erosion theories. Abrasion resistance of materials. Croatia, 2012.
@inbook{be175787bfba40d5ae7c31fd2ba8ffa9,
title = "Low impact velocity wastage in FBCs: experimental results and comparison between abrasion and erosion theories",
abstract = "The use of technologies related to combustion of coal in fluidized bed combustors (FBCs) present attractive advantages over conventional pulverized coal units. Some of the outstanding characteristics are: excellent heat transfer, low emission of contaminants, good combustion efficiencies and good fuel flexibility. However, FBC units can suffer materials deterioration due to particle interaction of solid particles with the heat transfer tubes immersed on the bed (Hou, 2004, Oka, 2004, Rademarkers et al., 1990). Among other issues, some of the most important factors believed to cause wear problems are: the motion of slowly but relatively coarse particles, particles loaded onto the surface by other particles, erosion by relatively fast-moving particles associated with bubbles, and abrasion by blocks of particles thrown into the surface by bubble collapse. Thus, erosion or abrasion processes can occur by a variety of causes. For the case of particle movement against in-bed surfaces, it has been suggested that there is no difference in the ability to cause degradation between solid particle erosion and low stress three body abrasion, and distinctions between the two forms of wear should not to be made (Levy, 1987).",
keywords = "abrasion, erosion, fluidized bed combustors (FBCs), heat transfer",
author = "Chac{\'o}n-Nava, {Jos{\'e} G.} and F. Almeraya-Calder{\'o}n and Alberto Mart{\'i}nez-Villafa{\~n}e and Margaret Stack",
note = "Published online",
year = "2012",
month = "3",
language = "English",
isbn = "9799533070369",
booktitle = "Abrasion resistance of materials",

}

Chacón-Nava, JG, Almeraya-Calderón, F, Martínez-Villafañe, A & Stack, M 2012, Low impact velocity wastage in FBCs: experimental results and comparison between abrasion and erosion theories. in Abrasion resistance of materials. Croatia.

Low impact velocity wastage in FBCs : experimental results and comparison between abrasion and erosion theories. / Chacón-Nava, José G.; Almeraya-Calderón, F.; Martínez-Villafañe, Alberto; Stack, Margaret.

Abrasion resistance of materials. Croatia, 2012.

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

TY - CHAP

T1 - Low impact velocity wastage in FBCs

T2 - experimental results and comparison between abrasion and erosion theories

AU - Chacón-Nava, José G.

AU - Almeraya-Calderón, F.

AU - Martínez-Villafañe, Alberto

AU - Stack, Margaret

N1 - Published online

PY - 2012/3

Y1 - 2012/3

N2 - The use of technologies related to combustion of coal in fluidized bed combustors (FBCs) present attractive advantages over conventional pulverized coal units. Some of the outstanding characteristics are: excellent heat transfer, low emission of contaminants, good combustion efficiencies and good fuel flexibility. However, FBC units can suffer materials deterioration due to particle interaction of solid particles with the heat transfer tubes immersed on the bed (Hou, 2004, Oka, 2004, Rademarkers et al., 1990). Among other issues, some of the most important factors believed to cause wear problems are: the motion of slowly but relatively coarse particles, particles loaded onto the surface by other particles, erosion by relatively fast-moving particles associated with bubbles, and abrasion by blocks of particles thrown into the surface by bubble collapse. Thus, erosion or abrasion processes can occur by a variety of causes. For the case of particle movement against in-bed surfaces, it has been suggested that there is no difference in the ability to cause degradation between solid particle erosion and low stress three body abrasion, and distinctions between the two forms of wear should not to be made (Levy, 1987).

AB - The use of technologies related to combustion of coal in fluidized bed combustors (FBCs) present attractive advantages over conventional pulverized coal units. Some of the outstanding characteristics are: excellent heat transfer, low emission of contaminants, good combustion efficiencies and good fuel flexibility. However, FBC units can suffer materials deterioration due to particle interaction of solid particles with the heat transfer tubes immersed on the bed (Hou, 2004, Oka, 2004, Rademarkers et al., 1990). Among other issues, some of the most important factors believed to cause wear problems are: the motion of slowly but relatively coarse particles, particles loaded onto the surface by other particles, erosion by relatively fast-moving particles associated with bubbles, and abrasion by blocks of particles thrown into the surface by bubble collapse. Thus, erosion or abrasion processes can occur by a variety of causes. For the case of particle movement against in-bed surfaces, it has been suggested that there is no difference in the ability to cause degradation between solid particle erosion and low stress three body abrasion, and distinctions between the two forms of wear should not to be made (Levy, 1987).

KW - abrasion

KW - erosion

KW - fluidized bed combustors (FBCs)

KW - heat transfer

UR - http://www.intechweb.org/

M3 - Chapter (peer-reviewed)

SN - 9799533070369

BT - Abrasion resistance of materials

CY - Croatia

ER -

Chacón-Nava JG, Almeraya-Calderón F, Martínez-Villafañe A, Stack M. Low impact velocity wastage in FBCs: experimental results and comparison between abrasion and erosion theories. In Abrasion resistance of materials. Croatia. 2012