The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Jacob A. Moulijn - One of the best experts on this subject based on the ideXlab platform.
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Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or "soot"), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter, (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
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Review article Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or “soot”), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter; (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
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1996 Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or ''soot''), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter, (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
Ilie Suarasan - One of the best experts on this subject based on the ideXlab platform.
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Charging of Particulates in the corona field of roll-type electroseparators Charging of Particulates in the corona 1 field of roll-type electroseparators
Journal of Physics D: Applied Physics, 1994Co-Authors: Lucian Dascalescu, Roman Morar, Adrian Samuila, Alexandru Iuga, Vasile Neamtu, Ilie SuarasanAbstract:The physics of corona charging phenomena is of paramount importance lor the development of such electrotechnologies as precipitation of dust, spraying of powders and selective solting of Particulate mixtures. This study focused on the use of corona discharge in electroseparation processes. Crude theoretical evaluations pointed oLt that the required corona current density and high-voltage level in this application depend on various factors, such as material characteristics. feed rate and configuration of the electrode system. Experiments carried out on a laboratory roll-type electroseparator demonstraled the capability of a new corona electrode design to generate an extended and quasi-uniform corona lield. Stable corona discharges were obtained when energizing thal electrode at 00th positive and negative polarities lrom a reversible non-filtered full-bridge high-voltage rectifier. The voltage-current characteristics of the corona discharge lrom the new electrode were determined under various operating conditions: (i) without material in the inter-electrode gap; (ii) with a monolayer of a 50% aluminium-50% polyvinyl chloride palticulate mixlure on the surface of the grounded electrode; (iii) with a similar monolayer of metallic parficles (99% aluminium); and (iv) with a layer of insulating particles (99% polyvinyl chloride). In each case, attention was paid to the upper acceptable limit of operating voltage. as well as to some side elfects 01 corona discharges, such as audible noise and ozone generation. The efficacy of corona charging was assessed by electroseparation tests involving two groups of palticulate materials: (i) barley grains, impurified with weeds and soil Particulates: and (ii) granular mixtures of metals and plastics, yielded by chopping electric wire and cable scrap. Several practical considerations were formulated, based on a critical evaluation of the exDerimental results.
John P.a. Neeft - One of the best experts on this subject based on the ideXlab platform.
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Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or "soot"), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter, (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
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Review article Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or “soot”), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter; (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
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1996 Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or ''soot''), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter, (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
Michiel Makkee - One of the best experts on this subject based on the ideXlab platform.
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Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or "soot"), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter, (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
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Review article Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or “soot”), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter; (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
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Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: P A Neeft John, Michiel Makkee, A Moulijn JacobAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or 'soot'), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NO sub x, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NO sub x will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the order fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NO sub x emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter; (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel. (Author abstract) 322 Refs.
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1996 Diesel Particulate emission control
Fuel Processing Technology, 1996Co-Authors: John P.a. Neeft, Michiel Makkee, Jacob A. MoulijnAbstract:This paper reviews the emission control of Particulates from diesel exhaust gases. The efficiency and exhaust emissions of diesel engines will be compared with those of otto engines (petrol engines). The formation of Particulates (or ''soot''), one of the main nuisances of diesel exhaust gases, will be briefly outlined. The effects of various emission components on human health and the environment will be described, and subsequently the emission standards for Particulates and for NOx, which have been introduced worldwide, will be summarized. Possible measures for reducing exhaust emissions of Particulates and NOx will be discussed, such as the use of alternative fuels, modifications to the engine and the use of aftertreatment devices. It will be made clear that aftertreatment devices may become necessary as diesel emission standards become more stringent, in spite of important progress in the other fields of reducing exhaust emissions. Selective catalytic reduction via hydrocarbons, ammonia or urea, a possible aftertreatment method for NOx emission control, will be discussed briefly. Filters for collecting Particulates from diesel exhaust gases will be examined in more detail and aftertreatment control systems for Particulate removal will be reviewed. These can be divided into (i) non-catalytic filter based systems which use burners and electric heaters to burn the soot once it has been collected on the filter, (ii) catalytic filter-based systems which consist of filters with a catalyst coating, or filters used in combination with catalytically active precursor compounds added to the diesel fuel; and (iii) catalytic non-filter-based systems in which gaseous hydrocarbons, carbon monoxide and part of the hydrocarbon fraction of the Particulates are oxidized in the exhaust gases. Finally, recent trends in diesel Particulate emission control will be discussed, indicating the growing importance of the catalytic solutions: the fast introduction of non-filter-based catalysts for diesel engines and the possible application of filters in combination with catalytically active precursor compounds added to diesel fuel.
Lucian Dascalescu - One of the best experts on this subject based on the ideXlab platform.
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Charging of Particulates in the corona field of roll-type electroseparators Charging of Particulates in the corona 1 field of roll-type electroseparators
Journal of Physics D: Applied Physics, 1994Co-Authors: Lucian Dascalescu, Roman Morar, Adrian Samuila, Alexandru Iuga, Vasile Neamtu, Ilie SuarasanAbstract:The physics of corona charging phenomena is of paramount importance lor the development of such electrotechnologies as precipitation of dust, spraying of powders and selective solting of Particulate mixtures. This study focused on the use of corona discharge in electroseparation processes. Crude theoretical evaluations pointed oLt that the required corona current density and high-voltage level in this application depend on various factors, such as material characteristics. feed rate and configuration of the electrode system. Experiments carried out on a laboratory roll-type electroseparator demonstraled the capability of a new corona electrode design to generate an extended and quasi-uniform corona lield. Stable corona discharges were obtained when energizing thal electrode at 00th positive and negative polarities lrom a reversible non-filtered full-bridge high-voltage rectifier. The voltage-current characteristics of the corona discharge lrom the new electrode were determined under various operating conditions: (i) without material in the inter-electrode gap; (ii) with a monolayer of a 50% aluminium-50% polyvinyl chloride palticulate mixlure on the surface of the grounded electrode; (iii) with a similar monolayer of metallic parficles (99% aluminium); and (iv) with a layer of insulating particles (99% polyvinyl chloride). In each case, attention was paid to the upper acceptable limit of operating voltage. as well as to some side elfects 01 corona discharges, such as audible noise and ozone generation. The efficacy of corona charging was assessed by electroseparation tests involving two groups of palticulate materials: (i) barley grains, impurified with weeds and soil Particulates: and (ii) granular mixtures of metals and plastics, yielded by chopping electric wire and cable scrap. Several practical considerations were formulated, based on a critical evaluation of the exDerimental results.
