Promoting effect of water vapor on particle matter combustion in a low-temperature continuous regeneration type PM removal device using a fluidized bed

K. Yokoo, Hideki Matsune, Masahiro Kishida, June Tatebayashi, Tsuyoshi Yamamoto

Research output: Contribution to journalArticle

Abstract

A fluidized bed type particulate matter (PM) removal device has been developed by focusing on the adhesion force under condition of non-water vapor. This device efficiently collects fine PM and can be operated as a low-temperature continuous regeneration device. The exhaust gas of a combustor includes water vapor at concentrations of 5–15 vol%. To further develop this device, the effect of water vapor on the continuous regeneration was investigated. The collection efficiency increases due to the water vapor. The reaction rate constant increases with increasing water vapor and with decreasing PM diameter. It is shown that water vapor promotes PM combustion at 250–400 °C. A smaller PM suits PM collection and combustion because smaller PM results in relatively larger adhesion force and well contacts the oxidant by dispersing it on the bed particles. The continuous regeneration temperature decreases to 380 °C due to the water vapor under optimal conditions.

Original languageEnglish
Pages (from-to)657-666
Number of pages10
JournalPowder Technology
Volume355
DOIs
Publication statusPublished - Oct 2019

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Particulate Matter
Steam
Fluidized beds
Water vapor
Temperature
Adhesion
Exhaust gases
Combustors
Oxidants
Reaction rates
Rate constants
Vapors

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

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abstract = "A fluidized bed type particulate matter (PM) removal device has been developed by focusing on the adhesion force under condition of non-water vapor. This device efficiently collects fine PM and can be operated as a low-temperature continuous regeneration device. The exhaust gas of a combustor includes water vapor at concentrations of 5–15 vol{\%}. To further develop this device, the effect of water vapor on the continuous regeneration was investigated. The collection efficiency increases due to the water vapor. The reaction rate constant increases with increasing water vapor and with decreasing PM diameter. It is shown that water vapor promotes PM combustion at 250–400 °C. A smaller PM suits PM collection and combustion because smaller PM results in relatively larger adhesion force and well contacts the oxidant by dispersing it on the bed particles. The continuous regeneration temperature decreases to 380 °C due to the water vapor under optimal conditions.",
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AU - Yokoo, K.

AU - Matsune, Hideki

AU - Kishida, Masahiro

AU - Tatebayashi, June

AU - Yamamoto, Tsuyoshi

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