Water is an effective additive to fuel oil to reduce the concentration of soot in the gas phase
Soot is one of the products of incomplete combustion of hydrocarbon fuels. It has the property of adsorption of active and carcinogenic substances on the surface of soot particles. In this regard, in burner equipment of medium and small power, it is required to develop and implement effective enviro...
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Kyrgyz Turkish Manas University
2022-12-01
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| Series: | MANAS: Journal of Engineering |
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| Online Access: | https://dergipark.org.tr/en/download/article-file/2531501 |
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| author | Mirlan Moldobaev Zarlık Maymekov Kubat Kemelov Damira Sambaeva |
| author_facet | Mirlan Moldobaev Zarlık Maymekov Kubat Kemelov Damira Sambaeva |
| author_sort | Mirlan Moldobaev |
| collection | DOAJ |
| description | Soot is one of the products of incomplete combustion of hydrocarbon fuels. It has the property of adsorption of active and carcinogenic substances on the surface of soot particles. In this regard, in burner equipment of medium and small power, it is required to develop and implement effective environmental measures to reduce emissions of soot particles. In this paper, the fuel oil-water-air system at a wide temperature range (T=500-3000K) was studied and the ratio of gas-liquid flows (water content in fuel oil 5-15%) at the maximum entropy of the system and the formation of soot in flue gases was revealed. To reduce the concentration of soot in flue gases, a fuel oil-water emulsion was used. The particle sizes of the fuel oil-water emulsion were determined by sedimentation analysis. It is shown that they have a polydisperse character (diameter from 8.96 to 59.02 μm). The water content in fuel oil during the preparation of fuel oil-water emulsion in the boiler room was controlled by a capacitive sensor. The water flow was automatically maintained by an ejector-dosing device. The thermodynamic parameters of the system (entropy, enthalpy, internal energy) were calculated and their comparative characteristics were obtained. The concentration distribution of hydrogen, carbon, nitrogen, sulfur and oxygen containing molecules, particles and condensed phases in the gas phase has been established. During the combustion of the fuel oil-water emulsion, the concentration of soot in the gas phase decreased due to an increase in hydrogen-containing particles in the gas phase, i.e. an increase in the H/C ratio, as well as a change in the concentration of condensed carbon (mol/kg): (fuel oil without water C(c) = 63.3 mol/kg); fuel oil with water: 5% H2O, C(c) = 54.96; 10% H2O, C(c) = 50.45; 15% H2O, C(c) = 46.3. It is noted that the H/C ratio in the case of burning fuel oil -water emulsion is 2.26 times higher. A technological scheme for the preparation and combustion of fuel oil in the form of fuel oil-water emulsions in industrial boilers of the E-1/9-M(3) type of the Bridge Construction Detachment of the Kyrgyz Railway, Bishkek, has been developed. It has been established that when burning fuel oil-water emulsions in boiler units, the soot content in flue gases is reduced by 75% due to the developed contact surface of the interacting phases and more complete combustion of particles of fuel oil-water emulsions. |
| format | Article |
| id | doaj-art-c4f9f624d1d94585bc6986bc8e92b0a0 |
| institution | Kabale University |
| issn | 1694-7398 |
| language | English |
| publishDate | 2022-12-01 |
| publisher | Kyrgyz Turkish Manas University |
| record_format | Article |
| series | MANAS: Journal of Engineering |
| spelling | doaj-art-c4f9f624d1d94585bc6986bc8e92b0a02024-12-05T03:36:00ZengKyrgyz Turkish Manas UniversityMANAS: Journal of Engineering1694-73982022-12-0110214515010.51354/mjen.11420791437Water is an effective additive to fuel oil to reduce the concentration of soot in the gas phaseMirlan Moldobaev0https://orcid.org/0000-0002-8710-5643Zarlık Maymekov1https://orcid.org/0000-0002-9117-262XKubat Kemelov2https://orcid.org/0000-0001-7375-6325Damira Sambaeva3https://orcid.org/0000-0002-9834-341XKYRGYZ - TURKISH MANAS UNIVERSITYKYRGYZ - TURKISH MANAS UNIVERSITYKYRGYZ - TURKISH MANAS UNIVERSITY1Kyrgyz State University of GeologySoot is one of the products of incomplete combustion of hydrocarbon fuels. It has the property of adsorption of active and carcinogenic substances on the surface of soot particles. In this regard, in burner equipment of medium and small power, it is required to develop and implement effective environmental measures to reduce emissions of soot particles. In this paper, the fuel oil-water-air system at a wide temperature range (T=500-3000K) was studied and the ratio of gas-liquid flows (water content in fuel oil 5-15%) at the maximum entropy of the system and the formation of soot in flue gases was revealed. To reduce the concentration of soot in flue gases, a fuel oil-water emulsion was used. The particle sizes of the fuel oil-water emulsion were determined by sedimentation analysis. It is shown that they have a polydisperse character (diameter from 8.96 to 59.02 μm). The water content in fuel oil during the preparation of fuel oil-water emulsion in the boiler room was controlled by a capacitive sensor. The water flow was automatically maintained by an ejector-dosing device. The thermodynamic parameters of the system (entropy, enthalpy, internal energy) were calculated and their comparative characteristics were obtained. The concentration distribution of hydrogen, carbon, nitrogen, sulfur and oxygen containing molecules, particles and condensed phases in the gas phase has been established. During the combustion of the fuel oil-water emulsion, the concentration of soot in the gas phase decreased due to an increase in hydrogen-containing particles in the gas phase, i.e. an increase in the H/C ratio, as well as a change in the concentration of condensed carbon (mol/kg): (fuel oil without water C(c) = 63.3 mol/kg); fuel oil with water: 5% H2O, C(c) = 54.96; 10% H2O, C(c) = 50.45; 15% H2O, C(c) = 46.3. It is noted that the H/C ratio in the case of burning fuel oil -water emulsion is 2.26 times higher. A technological scheme for the preparation and combustion of fuel oil in the form of fuel oil-water emulsions in industrial boilers of the E-1/9-M(3) type of the Bridge Construction Detachment of the Kyrgyz Railway, Bishkek, has been developed. It has been established that when burning fuel oil-water emulsions in boiler units, the soot content in flue gases is reduced by 75% due to the developed contact surface of the interacting phases and more complete combustion of particles of fuel oil-water emulsions.https://dergipark.org.tr/en/download/article-file/2531501fuel oilwaterairemulsioncombustionconcentrationboiler unitthermodynamic modelingentropytechnological scheme |
| spellingShingle | Mirlan Moldobaev Zarlık Maymekov Kubat Kemelov Damira Sambaeva Water is an effective additive to fuel oil to reduce the concentration of soot in the gas phase MANAS: Journal of Engineering fuel oil water air emulsion combustion concentration boiler unit thermodynamic modeling entropy technological scheme |
| title | Water is an effective additive to fuel oil to reduce the concentration of soot in the gas phase |
| title_full | Water is an effective additive to fuel oil to reduce the concentration of soot in the gas phase |
| title_fullStr | Water is an effective additive to fuel oil to reduce the concentration of soot in the gas phase |
| title_full_unstemmed | Water is an effective additive to fuel oil to reduce the concentration of soot in the gas phase |
| title_short | Water is an effective additive to fuel oil to reduce the concentration of soot in the gas phase |
| title_sort | water is an effective additive to fuel oil to reduce the concentration of soot in the gas phase |
| topic | fuel oil water air emulsion combustion concentration boiler unit thermodynamic modeling entropy technological scheme |
| url | https://dergipark.org.tr/en/download/article-file/2531501 |
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