Diesel Engine Emissions Control Requires Low Sulfur Diesel Fuel

Mooney, John J.

doi:10.4271/2000-01-1434

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…The continued use of fossil fuels for clean, affordable energy depends on our ability to reduce their environmental impact. Emissions of particulate matter and the oxides of nitrogen (NO x ) and sulfur (SO x ) have attracted much attention. − Recently, increased CO 2 concentration in the atmosphere due to the emissions of CO 2 from fossil fuel combustion has caused the concerns for global climate change. − To stabilize the CO 2 concentration in the atmosphere, control of the CO 2 emission is necessary. Carbon sequestration is considered one of the options. , Generally, there are three steps in this CO 2 management: separation, transportation, and sequestration.…”

Section: Introductionmentioning

confidence: 99%

Influence of Moisture on CO₂ Separation from Gas Mixture by a Nanoporous Adsorbent Based on Polyethylenimine-Modified Molecular Sieve MCM-41

Song

Miller

et al. 2005

Ind. Eng. Chem. Res.

367

350

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Adsorption separation of CO2 from simulated flue gas containing CO2, O2, and N2 with and without moisture was investigated using a novel nanoporous adsorbent based on polyethylenimine (PEI)-modified mesoporous molecular sieve MCM-41 in a flow system. The CO2 adsorption capacity and CO2 separation selectivity of MCM-41 were greatly improved by loading PEI into its nanosized pore channels, which made the resulting adsorbent operating like a “molecular basket” for CO2. CO2 adsorption capacity of the MCM-41-PEI adsorbent for the simulated moist flue gas was higher than that for the simulated dry flue gas. CO2 separation selectivity of the MCM-41-PEI adsorbent was also improved in the presence of moisture when compared with those in the dry gas condition. The influence of moisture concentrations in the simulated flue gas on the CO2 adsorption separation performance was also examined. The results of adsorption/desorption separation cycles showed that the MCM-41-PEI adsorbent was stable over 10 cycles of adsorption/desorption operations. The hydrothermal stability of the “molecular basket” adsorbent was better than that of the MCM-41 support alone.

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Section: Introductionmentioning

confidence: 99%

Influence of Moisture on CO₂ Separation from Gas Mixture by a Nanoporous Adsorbent Based on Polyethylenimine-Modified Molecular Sieve MCM-41

Song

Miller

et al. 2005

Ind. Eng. Chem. Res.

367

350

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“…O pós-tratamento inclui sistema de escapamento com Redução Catalítica Seletiva -SCR e injeção de ureia e/ou Recirculação dos Gases de Escapamento -EGR [4]. No SCR, ocorre a conversão dos NOx a nitrogênio puro e vapor de água, que não causam danos quando expelidos na atmosfera, mas depende do abastecimento do veículo também com uma solução aquosa de ureia, agente redutor líquido automotivo -Arla 32 [5]. O EGR, por sua vez, não requer o uso do Arla 32, mas, em contrapartida, exige uma válvula de controle e um sistema adicional de resfriamento dos gases de escape.…”

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Effect of ultra-low sulfur diesel quality on exhaust emission in euro vi diesel engine

Gomes¹,

Melo²,

Moreira³

2019

Blucher Engineering Proceedings

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RESUMOIn Brazil, the P-8 phase of PROCONVE (Air Pollution Control Program for Automotive Vehicles) will start in 2022. This phase uses emissions limits equivalent to EURO VI for heavy-duty vehicles emissions control and some technological improvements will be introduce in the vehicles. This work evaluates the suitability of the current ULSD -Ultra-Low Sulfur Diesel (10-ppm wt., maximum sulfur content) to these new technologies, by performing emissions tests in a EURO VI diesel engine, with Brazilian and European ULSD, to verify the relevance of some of their properties in the pollutants emissions. The Brazilian ULSD with 7 vol.% and 10 vol.% biodiesel (B7 and B10 blends) presented similar performance to the European diesel (B7), regarding hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx) emissions and particulate matter (PM) and particle number (PN). On the other hand, the Brazilian ULSD with 15 vol.% of biodiesel (B15) in comparison with the European fuel (B7), presented higher NOx emission, and showed no benefits in terms of particulate emissions (PM and PN). In summary, the current Brazilian ULSD (B7 and B10) complies with the requirements of the EURO VI phase, for the tested engine, as well as the European diesel. INTRODUÇÃONo Brasil, o CONAMA (Conselho Nacional de Meio Ambiente) criou o PROCONVE (Programa de Controle de Emissões Veiculares por Veículos Automotores), pela Resolução CONAMA nº 18, de 06 de maio de 1986 [1]. Cronologicamente, as sucessivas edições do programa foram voltadas para uma redução gradativa, e expressiva, dos limites permitidos das emissões de poluentes por veículos automotores. Para os veículos do ciclo Diesel, a atenção prioritária recaía sobre as emissões gasosas de óxidos de nitrogênio, denominados NOx, em função das formações de NO e NO 2 , por serem irritantes pulmonares, além de serem precursores de chuvas ácidas e de ozônio. O material particulado (PM) também teve grande importância, por conter partículas prontamente respiráveis, podendo ocasionar problemas respiratórios, e por ser vetor de outros poluentes (metais pesados, compostos orgânicos carcinogênicos, etc.). Tais compostos são constituídos basicamente de hidrocarbonetos pesados presentes no óleo diesel e no óleo lubrificante, sulfatos derivados do enxofre do combustível, água e metais. Dentre os hidrocarbonetos, destacam-se os Hidrocarbonetos Aromáticos Policíclicos -HAP's, compostos supostamente mutagênicos e carcinogênicos.Em 01.10.1993, pela resolução complementar nº 08/93, foram estabelecidos limites de emissões de poluentes por veículos automotores até o ano 2000 (CONAMA P-4). No art. 15 da Resolução CONAMA nº 315/2002 [2], foram estabelecidos limites máximos de emissão de poluentes produzidos por veículos automotores pesados para a fase P-5, que entrou em vigor em 01/01/2006 e para a fase sucessiva P-6, em vigor a partir de 01/01/2009. Esta legislação estabeleceu níveis mais baixos de emissões de NOx e PM, associados a um menor consumo de combustível e a um menor nível de emissões de CO 2 . A fase P-6...

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“…No sistema de redução catalítica seletiva (SCR) ocorre a conversão dos óxidos de nitrogênio (NO x ), em nitrogênio puro (N 2 ) e vapor de água, que não causam danos ambientais quando expelidos na atmosfera, mas necessitam de uma solução aquosa de uréia (ARLA 32 -agente redutor líquido automotivo) [7].…”

Section: Introductionunclassified

Ultra Low Sulfur Diesel Fuel Performance

Gomes¹,

Melo²,

Massa³

et al. 2014

Anais Do XXII Simpósio Internacional De Engenharia Automotiva

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The increasing concern regarding air quality improvement has guided the environmental legislation to establish severe restrictions goals for vehicular pollutants reduction. The ongoing search for cleaner-burning fuels does not necessarily result in appropriate fuel performance. Such restrictions directly impact the refining scheme of diesel fuel production and reflect on changes in its chemical composition. The severe refinery hydro-processing being introduced to remove sulfur, also reduces surface active compounds and antioxidants, potentially changing the final properties of the low sulfur diesel oil produced. The S10 diesel fuel (10 mg/kg of sulfur) was released in Brazilian Market in January, 2013 to substitute the S50 one (50 mg/kg of sulfur), necessary for the new engines with technologies CONAMA P7 and PROCONVE L6 (SUV -sport utilities vehicles and pickups).In this work, the S10 diesel fuel performance, in terms of emissions, stability and detergency was evaluated. The influence of FAME blending and additives was also studied. Engine tests Peugeot XUD9 and Peugeot DW10 were used as tools for assessing the tendency to form deposits in fuel injectors. The test results confirmed the adequate performance of these low sulfur diesel formulations. INTRODUÇÃOEm função da malha de transporte de carga e passageiros ser fortemente baseada no modal rodoviário, o óleo diesel possui uma elevada demanda e importância estratégica no Brasil. A Petrobras trabalha continuamente na maximização do volume de óleo diesel em relação ao petróleo processado, buscando sempre a melhor qualidade do produto para garantir melhor desempenho. A implantação do PROCONVE -Programa Nacional de Controle de Emissões Veiculares por Veículos Automotores em 1986 [1] estabeleceu uma redução gradativa, e expressiva, dos níveis permitidos das emissões veiculares de poluentes que impulsionou o desenvolvimento tecnológico dos motores e das especificações de combustíveis, principalmente do óleo diesel e da gasolina.Para os veículos do ciclo diesel, a atenção prioritária recaiu sobre as emissões gasosas de óxidos de nitrogênio, denominados NOx (em função das formações de NO e NO 2 ) e de material particulado (MP). Os óxidos de nitrogênio, por serem irritantes pulmonares, além de serem precursores de chuvas ácidas e de ozônio. O material particulado, por conter partículas

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Diesel Engine Emissions Control Requires Low Sulfur Diesel Fuel

Cited by 5 publications

References 4 publications

Influence of Moisture on CO₂ Separation from Gas Mixture by a Nanoporous Adsorbent Based on Polyethylenimine-Modified Molecular Sieve MCM-41

Influence of Moisture on CO₂ Separation from Gas Mixture by a Nanoporous Adsorbent Based on Polyethylenimine-Modified Molecular Sieve MCM-41

Effect of ultra-low sulfur diesel quality on exhaust emission in euro vi diesel engine

Ultra Low Sulfur Diesel Fuel Performance

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Diesel Engine Emissions Control Requires Low Sulfur Diesel Fuel

Cited by 5 publications

References 4 publications

Influence of Moisture on CO2 Separation from Gas Mixture by a Nanoporous Adsorbent Based on Polyethylenimine-Modified Molecular Sieve MCM-41

Influence of Moisture on CO2 Separation from Gas Mixture by a Nanoporous Adsorbent Based on Polyethylenimine-Modified Molecular Sieve MCM-41

Effect of ultra-low sulfur diesel quality on exhaust emission in euro vi diesel engine

Ultra Low Sulfur Diesel Fuel Performance

Contact Info

Product

Resources

About

Influence of Moisture on CO₂ Separation from Gas Mixture by a Nanoporous Adsorbent Based on Polyethylenimine-Modified Molecular Sieve MCM-41

Influence of Moisture on CO₂ Separation from Gas Mixture by a Nanoporous Adsorbent Based on Polyethylenimine-Modified Molecular Sieve MCM-41