Partial Discharges Characteristics in Oil Shale of Various Deposits

2014 ◽  
Vol 1040 ◽  
pp. 726-729
Author(s):  
Ilia A. Koryashov ◽  
Vladimir V. Lopatin ◽  
Andrey A. Bukharkin ◽  
Sergey M. Martemyanov
Keyword(s):  
Oil Shale ◽  
Fossil Fuels ◽  
Organic Content ◽  
Partial Discharges ◽  
High Rate ◽  
Efficient Technology ◽  
Electrical Discharges ◽  
Basic Characteristics ◽  
Electrothermal Breakdown ◽  
Electrical Intensity

Attention to oil shale processing as unconventional energy source grows significantly. Electrical discharge phenomena application allows creating new efficient technology. Dynamics of PD basic characteristics of voltage in oil shale is described in this paper. Thermodestruction with abnormally high rate is occurred and caused by PD activity. Critical PD incept under low electrical intensity due to oil shale porosity, anisotropy and heterogeneity. PD induce treeing with following electrothermal breakdown. Organic content has influence on electrical discharges phenomena in oil shale. Therefore, the detailed study of PD, treeing and breakdown in oil shale allows developing an efficient method of inferior solid fossil fuels processing.

Evaluating the Hydrocarbon Yield of Oil Shale Using Electrically Tunable Terahertz Wave

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
Xinyang Miao ◽  
Mengxi Chen ◽  
Honglei Zhan ◽  
Kun Zhao ◽  
Wenzheng Yue
Keyword(s):  
Oil Shale ◽  
Fossil Fuels ◽  
Terahertz Wave ◽  
Organic Content ◽  
Oil Yield ◽  
Conductive Medium ◽  
Carbon Structures ◽  
Hydrocarbon Yield ◽  
Unconventional Resource ◽  
Thz Absorption

Abstract Hydrocarbons in oil shale are significant for the output of fossil fuels and petrochemical materials; thus, the oil yield characterization is of great significance for efficient utilization and commercial exploitation of these resources. In this paper, we propose an evaluating means combined with electrical testing and terahertz (THz) measurements, named as resistivity-THz analysis (RTA), to characterize the oil shale from different places in China. Electrical and THz measurements were performed together to characterize the oil yield-dependent resistivity and THz absorption. Owing to the divergence in structures and compositions, both the electrical conductivity and THz parameters varied non-monotonic with the oil yield. However, electrically tunable THz wave absorption of oil shale can be realized by the linear correlation between the resistivity and THz attenuation coefficient, with the tunability varies monotonously with the oil yield. The results demonstrate that the carbon structures in kerogens are not only the conductive medium in oil shale but also the main source of THz absorption. As a non-contacting means for organic content characterization in oil shale, RTA is helpful to optimize the comprehensive utilization of this unconventional resource.

The mechanical behavior of the Kettle Point oil shale

1986 ◽  
Vol 23 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Maurice B. Dusseault ◽  
Matthias Loftsson ◽  
David Russell
Keyword(s):  
Oil Shale ◽  
Clay Content ◽  
Organic Content ◽  
Point Load ◽  
Brazilian Test ◽  
Point Load Strength ◽  
Triaxial Strength ◽  
Deformation Properties ◽  
Strength And Deformation ◽  
Oil Shales

Samples of eastern black shale (Kettle Point oil shales, Ontario) were subjected to extensive mineralogical and geomechanical tests. We prove that the mineralogy, as measured by the ratio of quartz to illite, controls strength and deformation properties, and the organic material plays no significant role. The reason is that increasing clay content dilutes the rigid quartz–quartz grain contacts that are responsible for the high strengths and stiff behavior. Tests of temperature effects on point load strength of another low organic content oil shale confirm that organic matter is not important to mechanical properties in matrix-supported shales. Key words: shale, mineralogy, Brazilian test, triaxial strength, organic content, slake durability, thermogravimetry.

Analysis of HDR Power Generation Technology

2012 ◽  
Vol 616-618 ◽  
pp. 1128-1132
Author(s):  
Yong Cun Guo ◽  
Gang Cheng ◽  
Kun Hu ◽  
Peng Yu Wang
Keyword(s):  
Power Generation ◽  
Fossil Fuels ◽  
Clean Energy ◽  
Geothermal Resources ◽  
Basic Principles ◽  
New Energy ◽  
Power Generation Technology ◽  
Basic Characteristics ◽  
Geographical Characteristics ◽  
Generation Technology

As human overexploitation of non-renewable fossil fuels such as mining resources, the global environment has been severely polluted and damaged, which also poses a threat to human's health. So it is full of demands for renewable and clean energy sources. At present R & D of new energy is also increasing emphasised around the world. HDR as a renewable clean geothermal resources, with large reserves, widely distributed, heat, environmentally friendly development, through the heat exchange technology for power generation, which has a strong potential value.To actively develop new energy and promote the application of HDR power generation technology,we start from the basic characteristics of the HDR, and explore the basic principles of HDR power generation, the key technologies and the development of economic conditions. Meanwhile combined with the geographical characteristics of the environment in China, from the perspective of integration of subject resources,finally we constructively put forward a three-stage strategy for HDR power generation development plan.

scholarly journals Desalination for agriculture: water quality and plant chemistry, technologies and challenges

2017 ◽  
Vol 18 (5) ◽  
pp. 1505-1517 ◽  
Author(s):  
Rajesha Kumar ◽  
Mansour Ahmed ◽  
G. Bhadrachari ◽  
Jibu P. Thomas
Keyword(s):  
Water Resources ◽  
Fossil Fuels ◽  
Forward Osmosis ◽  
Cost Savings ◽  
Pilot Scale ◽  
Ionic Concentration ◽  
Water Desalination ◽  
Agricultural Irrigation ◽  
Renewable Energy Resources ◽  
Efficient Technology

Abstract The growing scarcity of fresh water has motivated the use of non-conventional and re-used water resources for agriculture by applying some efficient technologies. The desalination technologies for agricultural irrigation play a major role in satisfying growing water demands in water scarce regions. Due to stringent ionic concentration standards for agricultural irrigation water, desalination for agriculture is more energy demanding and additional post-treatment is requisite. Reverse osmosis (RO) has emerged as an efficient technology, but the burning of fossil fuels to fulfil the energy requirements is becoming expensive and emission of greenhouse gases is recognized as harmful to the environment. Thus, efforts should be directed towards cost reduction by integrating renewable energy resources into the process. Many of the bench and pilot scale trials like integrated RO with low energy such as forward osmosis (FO), nanofiltration (NF), microfiltration (MF) and solar energy revealed significant improvements in cost savings. However, all these modern technologies have their own problems which can be overcome by further research and development. This paper aims to review the main benefits and constraints associated with desalination technologies for agriculture. The available water resources, the desired qualities of water for agriculture and the challenges and future of desalination in agriculture are discussed.

scholarly journals Analysis of the composition of thermolysis products of ash-free concentrates obtained on the basis of oil shale of the Ayuvinskoye deposit (Komi Republic)

2021 ◽  
Vol 10 ◽  
pp. 33-41
Author(s):  
N. S. Burdelnaya ◽  
◽  
D. A. Bushnev ◽  
I. N. Burtsev ◽  
D. V. Kuzmin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organic Matter ◽  
Oil Shale ◽  
Fossil Fuels ◽  
Sedimentary Rocks ◽  
Structural Features ◽  
Komi Republic ◽  
Gas Chromatography Mass Spectrometry ◽  
Alkyl Chains

The treatment with N-methylpyrrolidone of sedimentary rocks of the Ayuvinskoye deposit allowed obtaining ash-free concentrates with different yields, depending on the Corg content in the rock. The structure of the resulting concentrates was studied by elemental analysis, thermogravimetry, and pyrolysis, followed by analysis of the products by gas chromatography-mass spectrometry. The TGA curves indicated similar structural features of the organic matter of the rocks and the concentrates obtained from them. The composition of the thermolysis products of the concentrate indicated the preferential extraction of aliphatic structures, represented by n-alkyl chains, relative to aromatic fragments, which was associated with the specific structure of the initial organic matter of solid fossil fuels.

High-Temperature Corrosion of Martensite Alloy Under Oil Shale Fly Ash

2000 ◽  
Vol 123 (3) ◽  
pp. 387-390
Author(s):  
H. Tallermo ◽  
I. Klevtsov ◽  
M. Uus ◽  
R. A. Crane
Keyword(s):  
Corrosion Resistance ◽  
Fly Ash ◽  
Oil Shale ◽  
Fossil Fuels ◽  
High Temperature Corrosion ◽  
Empirical Equations ◽  
Alkaline Metals ◽  
Operational Temperature ◽  
Austenitic Alloys ◽  
Steam Boilers

Superheater surfaces in oil shale steam boilers, constructed from pearlitic or austenitic alloys, are subject to intensive corrosion, primarily from the presence of chlorine in external deposits. The applicability of martensitic alloys X10CrMoVNb91 and X20CrMoV121 for superheaters has been examined and empirical equations to predict alloy corrosion resistance have been developed for the operational temperature range. Alloy 10CrMoVNb91 is found highly suitable for superheaters in boilers firing fossil fuels that contain alkaline metals and chlorine. An abnormal dependence of corrosion resistance of martensitic alloys on temperature is revealed, namely that corrosion in presence of oil shale fly ash is more severe at 580°C than at 620°C.

Physico-Chemical-Biological Treatment of Municipal Wastewater

1991 ◽  
Vol 24 (7) ◽  
pp. 285-292 ◽  
Author(s):  
F. A. El-Gohary ◽  
S. I. Abo-Elela ◽  
S. A. Shehata ◽  
H. M. El-Kamah
Keyword(s):  
Biological Treatment ◽  
Municipal Wastewater ◽  
Sewage Treatment ◽  
Organic Content ◽  
High Rate ◽  
Experimental Investigations ◽  
Oxidation Pond ◽  
Treated Effluent ◽  
Physico Chemical ◽  
Solids Removal

Physico-chemical sewage treatment via coagulation-sedimentation is put in action for suspended solids removal. The effectiveness of this technology concerning the soluble organic content is extremely low. In direct comparison, the use of a biological sand-bed and a high-rate oxidation pond as a tertiary treatment for the chemically treated effluent brought about a substantial increase in efficiency. Experimental investigations performed led to the conclusions that, for the reuse of wastewater for irrigation, chemical treatment is appropriate. For discharge of treated effluents into surface water, combination of the physico-chemical-biological scheme is recommended.

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