The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This article quantitatively investigated the microscopic pore structure of the Eocene argillaceous dolomite reservoir from the Jianghan Basin in China to further the understanding of shale oil and gas storage mechanism in these rocks, considering that extensive studies have been conducted on the shale reservoir but seldom focused on argillaceous dolomite reservoir. Image analysis technology (containing...
Various sizes of pores in coal, which are generally formed by organic matter during the coalification process, have a direct influence on coalbed methane extraction. However, few studies have investigated the pore size distributions across the thermal evolution of coal from peat to anthracite. In this project, three series of coal samples collected from three key CBM development basins with graded...
This work studies the utilization of a binder grade industrial tar with an inherent content in primary quinolone insoluble particles (QIs) and the correspondent free-QI tar obtained from it by a sedimentation process as raw sources of graphene materials via different preparation procedures. Graphene oxides (GOs) were prepared via the oxidation of binder tar-based graphite and subsequent sonication...
This work evaluated the use of protic ionic liquids (PILs) in the pretreatment of sugarcane bagasse. Cations and anions with different chain lengths were used to synthesize four PILs, which had their performances evaluated by the solubilization of lignin in the pretreatment step and polysaccharides conversion in the enzymatic hydrolysis. The recovery and recycling of the best performing PIL (2-hydroxy...
In this work, single particle combustion of raw and torrefied 4mm wood particles with different potassium content obtained by KCl impregnation and washing was studied experimentally under a condition of 1225°C, 3.1% O2 and 26.1% H2O. The ignition time and devolatilization time depended almost linearly on the fuel particle mass. The char conversion time was influenced by both the char mass and char...
The performance of La0.9Sr0.1Co1−xNixO3 perovskite catalysts with different Ni substitution levels was evaluated in the Fischer-Tropsch (F-T) synthesis for higher alcohol production. It was found that Ni substitution improved the catalyst’s reducibility and had a positive effect on higher alcohol synthesis (HAS) from syngas. Only a limited amount of Ni ions can enter into the perovskite structure...
Experiments were conducted to investigate the coal gasification performance and char characteristics affected by Ca/Na compounds. Firstly, the gasification reactivities of Ca-loaded coal, Na-loaded coal, and Ca/Na-loaded coal were compared by TGA in different gasifying agents including 100% H2O, 100% CO2, and 66.7% H2O+33.3% CO2. Then, partially-gasified chars of Ca/Na-loaded coal with carbon conversion...
Sulfur release behavior of selected sulfur-containing compounds, tetradecyl mercaptan, dibutyl sulfide, phenyl sulfide, 2-methyl thiophene, benzo-thiophene and dibenzo-thiophene, were investigated by pyrolysis coupled with mass spectrometer (Py-MS) and pyrolysis connected with gas chromatogram (Py-GC) under CO2 atmosphere. It was found that the order of sulfur stability is tetradecyl mercaptan<dibutyl...
The thermochemical conversion of biomass via gasification and pyrolysis offer attractive routes to drop-in-ready fuels and renewably-derived chemicals from a variety of different biomass feedstocks. For both of these conversion pathways prediction of the growth of Polycyclic Aromatic Hydrocarbon (PAH) compounds is of particular importance since they can cause major challenges in downstream catalytic...
This paper presents an experimental study of the characteristics of laminar lifted flames of non-premixed propene in coflow jets of air heated at initial temperatures ranging from 800 to 1000K, under atmospheric pressure. The results showed that the jet-velocity-dependent flame behavior of propene agrees well with that of the methane, ethylene, and ethane cases in the earlier C1–C4 studies: (1) the...
A promising biochar-based catalyst was successfully developed from Jatropha curcas hull and de-oiled meal by incomplete carbonization and subsequent sulfonation. The catalysts were employed to produce functionalized blend components for low sulfur diesel. The catalysts were characterized by XRD, TG-DSC, BET, FT-IR and SEM. The characterization results revealed that the catalysts consisted of irregular,...
Finding optimum well locations is still among the most challenging reservoir engineering problems. Reservoir simulators are routinely used to evaluate different configuration of well locations in the reservoirs. However, simulation of giant field models is computationally demanding and time consuming. In the current study, a novel proxy with the objective function that is based on volumetric pressure...
Primary NOx control methods used on coal fired utility boilers utilize ammonia- and urea-based processes. These processes result in some ammonia exiting the treatment zone, which can react with SO3/H2SO4 in the coal fired flue gas to form ammonium bisulfate (ABS). This ABS formation can lead to potential balance of plant operational issues:•deposition on the SCR NOx control ammonia injection components...
The idea of using porous media in internal combustion engines is proposed recently for charge homogenization. In this paper, the idea of using metallic porous media instead of ceramic type has been introduced and the macroscopic characteristics of high pressure diesel fuel spray has been studied in interaction with this type of porous media. High speed schlieren imaging method is used to capture the...
There is on-going concern regarding fugitive emissions of trace elements from mining and upgrading of the Athabasca Bituminous Sands (ABS) in northern Alberta, Canada, but remarkably few quantitative elemental data about the resource itself exists. By exploring advances in analytical techniques, an inductively coupled plasma sector field mass spectrometry (ICP-SFMS) method was developed for the determination...
CaO is a traditional desulfurizer used in coal combustion, and it is also a widely applied chemical conditioner in sewage sludge dewatering. In this study, the feasibility of co-combustion of CaO-conditioned sludge (Sc-CaO) and coal was discussed, including combustion characteristics and gas pollutants emission. The results show that adding 30% Sc-CaO into co-combustion strengthened the procedure...
Primary devolatilization and the exothermic heterogeneous secondary charring of the primary volatiles need to be described in a consistent manner in order to correctly predict the heat of reaction of biomass pyrolysis. Detailed reaction schemes can currently predict mass loss and product composition of biomass pyrolysis with good accuracy, but have a weakness in the description of the heat of reaction...
The inhibitory performance of glycine and its synergistic potentiality for poly N-vinylcaprolactam (PVCap) was studied by evaluating subcooling temperature, induction time and crystal growth inhibition respectively. Glycine could not inhibit CH4 hydrate formation alone but it could enhance the inhibitory performance of PVCap. The subcooling temperature of PVCap increased by 4.1°C and the induction...
For inhibiting the spontaneous combustion of coal, a technique using polymorphic foam (PF) synthesized from a sol foam/polycaprolactone (SFP) solution and organic acid is described. This study includes zeta potential measurements of the SFP solution and formation of the PF, and a differential scanning calorimeter/thermogravimetric, X-ray diffraction, X-ray photoelectron spectroscopy and infrared analysis...
This study aims to provide a geometrical description of biomass particles that can be used in combustion models. The particle size of wood and herbaceous biomass was compared using light microscope, 2D dynamic imaging, laser diffraction, sieve analysis and focused beam reflectance measurement. The results from light microscope and 2D dynamic imaging analysis were compared and it showed that the data...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.