Comparison of Raman analysis values for particulate matter emitted from combustion process of marine gas oil and ultra low-sulfur diesel oil

2018 ◽  
Vol 42 (4) ◽  
pp. 240-245
Author(s):  
Beom-Seok Rho ◽  
Jae-Hyuk Choi ◽  
Seul-Hyun Park ◽  
Won-Ju Lee ◽  
Kwon-Hae Cho
Keyword(s):  
Particulate Matter ◽  
Combustion Process ◽  
Diesel Oil ◽  
Gas Oil ◽  
Raman Analysis ◽  
Ultra Low Sulfur Diesel ◽  
Low Sulfur

Adsorption of Nitrogen Contaminants in the Light Gas Oil (LGO) and Light Cycle Oil (LCO) to Produce Diesel with Low Sulfur

2015 ◽  
Vol 364 ◽  
pp. 35-43
Author(s):  
M.A.G. Figueiredo ◽  
W.C. Souza ◽  
Harrison Corrêa ◽  
L.B. Ventura ◽  
H.L. Corrêa ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Light Cycle ◽  
Gas Oil ◽  
Nitrogenous Compounds ◽  
Light Cycle Oil ◽  
Ultra Low Sulfur Diesel ◽  
Light Gas Oil ◽  
Technical Specifications ◽  
Cycle Oil ◽  
Low Sulfur

Ultra-low sulfur diesel (ULSD) is obtained by Light Gas Oil (LGO) and Light Cycle Oil (LCO) feedstocks (middle fractions from distillate petroleum). In addition to the environmental requirements related to the production of fuels with a lower content of nitrogen, technical specifications refineries also stimulate the need to remove such compounds. Nitrogenous compounds, for example, are strong inhibitors for hydrodesulfurization reactions. As Brazilian oil has a high amount of nitrogen compounds, an alternative process for nitrogen removal has been investigated, such as adsorption. In this paper, the nitrogen removal was investigated. The adsorption tests were carried out in a shaking water batchs, by performing kinetic and isotherm tests. Two commercial clays were used: Fuller's earth and bentonite.

Genotoxicity of Diesel Particulate Matter Emitted by Port-Injection of Hydrous Ethanol and N-Butanol

2016 ◽  
Author(s):  
Marlon Cadrazco ◽  
John R. Agudelo ◽  
Luz Y. Orozco ◽  
Verónica Estrada
Keyword(s):  
Particulate Matter ◽  
Human Lymphocytes ◽  
Injection System ◽  
Engine Load ◽  
Ultra Low Sulfur Diesel ◽  
Load Mode ◽  
Intake Stroke ◽  
Injection Technology ◽  
Low Sulfur ◽  
Hydrous Ethanol

This work evaluated the genotoxic potential of the soluble organic material (SOM) extracted from the particulate matter (PM) emitted by an automotive diesel engine. The engine was modified to operate with a home-made multipoint-port injection system to substitute 10% of ultra-low-sulfur diesel (ULSD) fuel in energy basis by hydrous ethanol (h-Et) or n-butanol (n-Bu) injected into the manifold during the intake stroke. A low engine load mode named M4 (43 Nm at 2410 min−1) and a medium-load mode M2 (95 Nm at 2410 min−1) were selected from the vehicle homologation cycle. PM was collected with a stainless steel filter located 1.5 m downstream the exhaust manifold. The SOM of the PM was extracted to evaluate the genotoxic activity on human lymphocytes using the Comet assay. Results indicated that independently of the mode, the SOM coming from alcohols led more genotoxicity than ULSD, following the order h-Et > n-Bu > ULSD. The low engine load operation exhibited much more DNA damage than mode M2, especially the PM produced by hydrous ethanol port-injection. Although further research is still necessary, these findings suggest that the biology activity of the SOM coming from alcohols PM could be a barrier for the implementation of alcohol port-injection technology.

scholarly journals Estimation of combustion process parameters in a diesel engine supplied with a mixture of gas oil and synthetic fuels

2019 ◽  
Vol 20 (1-2) ◽  
pp. 309-312
Author(s):  
Wincenty Lotko ◽  
Kamil Łodygowski
Keyword(s):  
Combustion Process ◽  
Pressure Rise ◽  
Diesel Oil ◽  
Maximum Pressure ◽  
Test Results ◽  
Gas Oil ◽  
Synthetic Fuels ◽  
Fuel Blends ◽  
A Value ◽  
Ci Engine

The paper presents test results carried out with using of CI engine fuelled with diesel oil and synthetic fuels. Research results show that SYNON be used in diesel fuel. Combustion process of such fuel blends depend on mixture composition. Using of SYNON in mixture with diesel oil follows to increase a value of maximum pressure rise in combustion chamber.

scholarly journals Nitrogen compounds removal from oil-derived middle distillates by MIL-101(Cr) and its impact on ULSD production by hydrotreating

2021 ◽  
Vol 76 ◽  
pp. 56
Author(s):  
Edith Meneses-Ruiz ◽  
José Escobar ◽  
Rodolfo Juventino Mora ◽  
José Ascención Montoya ◽  
María Concepción Barrera ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Light Cycle ◽  
Gas Oil ◽  
Light Cycle Oil ◽  
Ultra Low Sulfur Diesel ◽  
Coker Gas Oil ◽  
Metal Organic ◽  
Cycle Oil ◽  
Middle Distillates ◽  
Low Sulfur

Oil-derived middle distillates (straight-run gas oil and mixture with light cycle oil and coker gas oil) for Ultra-Low Sulfur Diesel (ULSD) production by HyDroTreating (HDT) were pretreated by selective Nitrogen Organic Compounds (NOC) adsorption. Highly crystalline Metal-Organic Framework (MOF) MIL-101(Cr) prepared with propylene oxide (proton scavenger) as textural improver was used to that end. MOF was characterized by N2 physisorption, X-ray diffraction, thermal analysis, infrared, Raman and UV-vis spectroscopies, and electron microscopy (SEM and HR-TEM). NOC removal was carried out at room temperature and atmospheric pressure, the adsorbent being easily regenerable under mild conditions. Extruded MOF efficiently removed NOC from real feedstocks to concentrations ~ 80 ppm which allowed ULSD production at much milder conditions to those used during pristine feedstocks HDT. Operating temperature could be significantly diminished (from 350 to 330 °C, at 56 kg cm−2 (5.77 MPa), LHSV = 1.5 h−1, H2/oil = 2500 ft3 bbl−1 (445 m3 m−3)) which could notably prolong cycle life of NiMo/Al2O3 formulation used.

Formulation and tribological behavior of ultra-low sulfur diesel fuels microemulsified with glycerin

Fuel ◽  
2021 ◽  
Vol 292 ◽  
pp. 120257
Author(s):  
Igor M.A. Uchôa ◽  
Marcell S. Deus ◽  
Eduardo L. Barros Neto
Keyword(s):  
Tribological Behavior ◽  
Diesel Fuels ◽  
Ultra Low Sulfur Diesel ◽  
Low Sulfur

scholarly journals Dependence of the Flue Gas Flow on the Setting of the Separation Baffle in the Flue Gas Tract

2021 ◽  
Vol 11 (7) ◽  
pp. 2961
Author(s):  
Nikola Čajová Kantová ◽  
Alexander Čaja ◽  
Marek Patsch ◽  
Michal Holubčík ◽  
Peter Ďurčanský
Keyword(s):  
Particulate Matter ◽  
Flue Gas ◽  
Gas Flow ◽  
Negative Impact ◽  
Combustion Process ◽  
Cfd Simulations ◽  
Piv Measurements ◽  
Computational Fluid Dynamics Cfd ◽  
Particle Imaging ◽  
Combustion Of Solid Fuels

With the combustion of solid fuels, emissions such as particulate matter are also formed, which have a negative impact on human health. Reducing their amount in the air can be achieved by optimizing the combustion process as well as the flue gas flow. This article aims to optimize the flue gas tract using separation baffles. This design can make it possible to capture particulate matter by using three baffles and prevent it from escaping into the air in the flue gas. The geometric parameters of the first baffle were changed twice more. The dependence of the flue gas flow on the baffles was first observed by computational fluid dynamics (CFD) simulations and subsequently verified by the particle imaging velocimetry (PIV) method. Based on the CFD results, the most effective is setting 1 with the same boundary conditions as those during experimental PIV measurements. Setting 2 can capture 1.8% less particles and setting 3 can capture 0.6% less particles than setting 1. Based on the stoichiometric calculations, it would be possible to capture up to 62.3% of the particles in setting 1. The velocities comparison obtained from CFD and PIV confirmed the supposed character of the turbulent flow with vortexes appearing in the flue gas tract, despite some inaccuracies.

Effect of Biodiesel, JP-8 and Ultra Low Sulfur Diesel Fuel on Autoignition, Combustion, Performance and Emissions in a Single Cylinder Diesel Engine

2010 ◽  
Author(s):  
Chandrasekharan Jayakumar ◽  
Jagdish Nargunde ◽  
Anubhav Sinha ◽  
Walter Bryzik ◽  
Naeim A. Henein ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Properties ◽  
Nox Emissions ◽  
Single Cylinder ◽  
Combustion Performance ◽  
Ultra Low Sulfur Diesel ◽  
Diffusion Controlled ◽  
Performance And Emissions ◽  
Combustion Fraction ◽  
Low Sulfur

Concern about the depletion of petroleum reserves, rising prices of conventional fuels, security of supply and global warming have driven research toward the development of renewable fuels for use in diesel engines. These fuels have different physical and chemical properties that affect the diesel combustion process. This paper compares between the autoignition, combustion, performance and emissions of soybean derived biodiesel, JP-8 and ultra low sulfur diesel (ULSD) in a high speed single-cylinder research diesel engine equipped with a common rail injection system. Tests were conducted at steady state conditions at different injection pressures ranging from 600 bar to 1200 bar. The ‘rate of heat release’ traces are analyzed to determine the effect of fuel properties on the ignition delay, premixed combustion fraction and mixing and diffusion controlled combustion fractions. Biodiesel produced the largest diffusion controlled combustion fraction at all injection pressures compared to ULSD and JP-8. At 600 bar injection pressure, the diffusion controlled combustion fraction for biodiesel was 53% whereas both JP-8 and ULSD produced 39%. In addition, the effect of fuel properties on engine performance, fuel economy, and engine-out emissions is determined. On an average JP-8 produced 3% higher thermal efficiency than ULSD. Special attention is given to the NOx emissions and particulate matter characteristics. On an average biodiesel produced 37% less NOx emissions compared to ULSD and JP-8.

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