Showing papers in "Fuel in 2015"

TL;DR: In this paper, the pore geometry of coal samples with different metamorphism has been analyzed using low-pressure nitrogen gas adsorption (LP-N2GA) and scanning electron microscopy (SEM).

TL;DR: An extended overview of the advantages and disadvantages of biomass composition and properties for biofuel application was conducted based on reference peer-reviewed data plus own investigations as mentioned in this paper, which showed that the major environmental, economic and social benefits appeared to compensate the technological and other barriers caused by the unfavourable composition of biomass.

TL;DR: In this article, detailed projections of world fossil fuel production including unconventional sources were created by country and fuel type to estimate possible future fossil fuel consumption. And the projections were compared to IPCC scenarios which indicated that based on current estimates of URR there are insufficient fossil fuels to deliver the higher emission IPCC scenarios A1Fl and RCP8.5.

TL;DR: In this paper, a general review of the FGD technologies used to abate sulphur emissions from coal-fired power plants, and exposes the major physic-chemical processes occurring during wet limestone FGD is presented.

TL;DR: In this paper, the authors used numerical reservoir simulation to model CO2 injection as a huff-n-puff process with typical reservoir and fracture properties from the Bakken formation.

TL;DR: In this article, the authors investigated the characteristics of ammonia/air premixed flames at various pressures up to 0.5 MPa and found that the maximum value of unstretched laminar burning velocities is less than 7 cm/s within the examined conditions and is lower than those of hydrocarbon flames.

TL;DR: In this article, the surface area, porosity and other physical-structural properties of bituminous coals from three different coal fields of South Africa determined using carbon dioxide (CO2) and nitrogen (N2) low pressure gas adsorption (LPGA), mercury intrusion porosimetry (MIP), and advanced Small Angle X-ray Scattering (SAXS) analytical techniques.

TL;DR: In this paper, the implication of silica nanoparticles in combination with anionic surfactant to see if the surfactants properties are influenced in the presence of nanoparticles and investigate the capability of these particles to enhance oil recovery.

TL;DR: In this paper, a 15-t experimental furnace was constructed, and large-scale spontaneous combustion tests were conducted, and the variations in temperature, gas ratios, oxygen consumption rate, and heat intensity were studied.

TL;DR: In this article, a co-pyrolysis of red oak and high density polyethylene (HDPE) was conducted in a laboratory-scale, continuous fluidized bed reactor in a temperature range from 525 to 675°C.

TL;DR: In this article, the ash deposition propensity as well as its relation to AAEM-rich fine particulates was investigated in a 25kW down-fired furnace possessing similar conditions to practical combustors The high content AAEM (mainly calcium) species in Zhundong lignite results in the molten slag at the vicinity of the burner inlet.

TL;DR: South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation of South Africa (South Africa) (Chair Grant No: 86880, UID 85643, Grant No.

TL;DR: In this article, the effects of blending n-pentanol, a second generation biofuel with diesel on the performance and emission characteristics of a diesel engine under exhaust gas recirculation (EGR) conditions are investigated.

TL;DR: In this paper, the byproduct (bio-char) from liquefaction of rice husk with water, water/ethanol (V/V, 5:5), or ethanol as the solvent at 260-340°C was characterized in terms of its elemental composition, thermogravimetric characteristics, surface area and pore size distribution, morphology, and oxygen-containing functional group composition.

TL;DR: In this paper, a hybrid nanocatalyst containing cerium oxide on amide-functionalized multiwall carbon nanotubes (MWCNT) was investigated using two types of diesel-biodiesel blends (B5 and B20) at three concentrations (30, 60 and 90ppm).

TL;DR: In this paper, the main research works done on the steam cracking of hydrocarbons from ethane to gasoil have been reviewed in the literature in the last five decades and a mathematical model is presented for the simulation of the firebox and the reactor.

TL;DR: In this article, the progress made in the conversion of coal fly ash to zeolite and its applications while strongly focusing on the utilization of microwave and ultrasound energies in achieving this goal is reviewed.

TL;DR: In this paper, the effects of pentanol addition to diesel and biodiesel fuels in different ratios on the combustion and emission of a single-cylinder direct-injection diesel engine were revealed.

TL;DR: In this paper, the effect of torrefaction temperature (220, 250 and 280°C) on the fuel properties of cotton stalk was investigated, and pyrolysis experiments were performed with torrefied cotton stalk.

TL;DR: In this paper, the correlation between fracture permeability and effective stress is established for gas shales through theoretical derivation, which is able to match the permeability data for different gas Shales.

TL;DR: In this article, a microalgae slurry was processed in a continuous flow hydrothermal processing unit capable of 2.5 l/h flow rates, temperatures of 350 °C and pressure of up to 206 bar.

TL;DR: In this paper, low-cost carbonaceous adsorbents with microporous structures and large specific surface area (up to 2511m2g−1) were prepared from a lignocellulosic feedstock by novel hydrothermal carbonization coupled with chemical activation for CO2 capture.

TL;DR: In this article, the performance of GRI Mech 3.0, USC Mech II, and Aramco Mech 1.3 at elevated temperatures and pressures was evaluated using a constant volume bomb and shock tube.

TL;DR: In this paper, the impact of properties of four very common bio-fuels, viz. vegetable oil (cottonseed), or its derived (methyl ester) bio-diesel, or ethanol, or n-butanol, in blends of various proportions with diesel fuel, on the combustion and exhaust emissions of a fully instrumented, sixcylinder, four-stroke, heavy-duty direct injection (HDDI), ‘Mercedes-Benz’ bus diesel engine, bearing a waste-gate turbocharger with after-cooler, running under steady and transient

TL;DR: In this paper, the combustion and emission characteristics of a dual fuel diesel engine with high premixed ratio of methanol (PRm) were investigated, and the experimental results showed that with high PRm, the maximum in-cylinder pressure increased from medium to high engine load but varied little or even decreased at low engine speed and load.

TL;DR: A comprehensive review of the current knowledge of the geo-chemistry of solubility and mineral trapping processes in deep saline aquifers can be found in this article, where a number of other reservoir parameters, such as layer thickness, tilt angle, anisotropy and bedding pattern may also significantly affect geochemical trapping.

TL;DR: In this article, the macromolecular and nanoscale pores of different types of tectonically deformed coals were characterized by AFM and the nanostructures of coal differed in terms of the metamorphism degree, deformation degree, and deformation properties.

TL;DR: The results from an ongoing laboratory study investigating petrophysical characteristics of the Montney and Bakken formations in Canada are presented in this article, where the pore network (porosity, pore size distribution, and fluid transport permeability) properties of these formations in areas with limited datasets are analyzed.

TL;DR: In this article, a combination of pressure-controlled porosimetry and rate-controlled pore detection was proposed to obtain the overall pore size distribution of tight sandstone oil reservoirs with pore radii ranging from 9.2 nm to 500 nm.

TL;DR: In this paper, the impact of methanol and E85 (85% ethanol and 15% gasoline) as additional fuels added to a diesel fueled engine on its combustion characteristics and exhaust toxic emission was described.