Sawdust as ignition intensifier of coal water slurries containing petrochemicals

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4 Citations (Scopus)

Abstract

The low reactivity of coal processing wastes (filter cakes), petroleum derivatives, oil sludge, oil-water emulsions, coal-water suspensions, as well as used fuel and industrial oils is the main barrier to their common use as main fuel on thermal power stations and a boiler plants. It leads to high energy consumption for heating the combustion chambers and subsequent firing. In this work, we suggest using sawdust as an additive to intensify the heating and ignition of coal water slurries containing petrochemicals (CWSP) prepared from coal and oil wastes. We show that adding even 10% sawdust lowers the threshold temperature of sustainable ignition by as much as 70–80 K. The more volatiles are in coal processing wastes, the more noticeable the contribution of sawdust to the intensity of CWSP ignition. The role of sawdust as an ignition intensifier is found to increase significantly with the rising CWSP droplet size and air temperature. Replacing the coal component (e.g., filter cake) of the CWSP composition by sawdust of the same mass leads to a negligible change in the calorific value of the fuel. At the same time, the anthropogenic emissions of nitrogen and sulfur oxides are reduced considerably.

Original languageEnglish
Pages (from-to)69-77
Number of pages9
JournalEnergy
Volume140
DOIs
Publication statusPublished - 1 Dec 2017

Fingerprint

Sawdust
Slurries
Petrochemicals
Ignition
Coal
Water
Heating
Calorific value
Combustion chambers
Processing
Emulsions
Boilers
Energy utilization
Crude oil
Nitrogen
Derivatives
Temperature
Oils

Keywords

  • Anthropogenic emissions
  • Coal and oil processing wastes
  • Coal water slurry containing petrochemicals
  • Filter cake
  • Ignition
  • Sawdust

ASJC Scopus subject areas

  • Pollution
  • Energy(all)

Cite this

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title = "Sawdust as ignition intensifier of coal water slurries containing petrochemicals",
abstract = "The low reactivity of coal processing wastes (filter cakes), petroleum derivatives, oil sludge, oil-water emulsions, coal-water suspensions, as well as used fuel and industrial oils is the main barrier to their common use as main fuel on thermal power stations and a boiler plants. It leads to high energy consumption for heating the combustion chambers and subsequent firing. In this work, we suggest using sawdust as an additive to intensify the heating and ignition of coal water slurries containing petrochemicals (CWSP) prepared from coal and oil wastes. We show that adding even 10{\%} sawdust lowers the threshold temperature of sustainable ignition by as much as 70–80 K. The more volatiles are in coal processing wastes, the more noticeable the contribution of sawdust to the intensity of CWSP ignition. The role of sawdust as an ignition intensifier is found to increase significantly with the rising CWSP droplet size and air temperature. Replacing the coal component (e.g., filter cake) of the CWSP composition by sawdust of the same mass leads to a negligible change in the calorific value of the fuel. At the same time, the anthropogenic emissions of nitrogen and sulfur oxides are reduced considerably.",
keywords = "Anthropogenic emissions, Coal and oil processing wastes, Coal water slurry containing petrochemicals, Filter cake, Ignition, Sawdust",
author = "Vershinina, {Ksenia Yu} and Kuznetsov, {Genii V.} and Strizhak, {Pavel A.}",
year = "2017",
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T1 - Sawdust as ignition intensifier of coal water slurries containing petrochemicals

AU - Vershinina, Ksenia Yu

AU - Kuznetsov, Genii V.

AU - Strizhak, Pavel A.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - The low reactivity of coal processing wastes (filter cakes), petroleum derivatives, oil sludge, oil-water emulsions, coal-water suspensions, as well as used fuel and industrial oils is the main barrier to their common use as main fuel on thermal power stations and a boiler plants. It leads to high energy consumption for heating the combustion chambers and subsequent firing. In this work, we suggest using sawdust as an additive to intensify the heating and ignition of coal water slurries containing petrochemicals (CWSP) prepared from coal and oil wastes. We show that adding even 10% sawdust lowers the threshold temperature of sustainable ignition by as much as 70–80 K. The more volatiles are in coal processing wastes, the more noticeable the contribution of sawdust to the intensity of CWSP ignition. The role of sawdust as an ignition intensifier is found to increase significantly with the rising CWSP droplet size and air temperature. Replacing the coal component (e.g., filter cake) of the CWSP composition by sawdust of the same mass leads to a negligible change in the calorific value of the fuel. At the same time, the anthropogenic emissions of nitrogen and sulfur oxides are reduced considerably.

AB - The low reactivity of coal processing wastes (filter cakes), petroleum derivatives, oil sludge, oil-water emulsions, coal-water suspensions, as well as used fuel and industrial oils is the main barrier to their common use as main fuel on thermal power stations and a boiler plants. It leads to high energy consumption for heating the combustion chambers and subsequent firing. In this work, we suggest using sawdust as an additive to intensify the heating and ignition of coal water slurries containing petrochemicals (CWSP) prepared from coal and oil wastes. We show that adding even 10% sawdust lowers the threshold temperature of sustainable ignition by as much as 70–80 K. The more volatiles are in coal processing wastes, the more noticeable the contribution of sawdust to the intensity of CWSP ignition. The role of sawdust as an ignition intensifier is found to increase significantly with the rising CWSP droplet size and air temperature. Replacing the coal component (e.g., filter cake) of the CWSP composition by sawdust of the same mass leads to a negligible change in the calorific value of the fuel. At the same time, the anthropogenic emissions of nitrogen and sulfur oxides are reduced considerably.

KW - Anthropogenic emissions

KW - Coal and oil processing wastes

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KW - Filter cake

KW - Ignition

KW - Sawdust

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