Journal of Liaoning Petrochemical University
Home
About The Journal
Award
Guide for Authors
Editorial Board
Contacts Us
Declaration
中文
Journals
Publication Years
Keywords
Search within results
(((ZHANG Lei[Author]) AND 1[Journal]) AND year[Order])
AND
OR
NOT
Title
Author
Institution
Keyword
Abstract
PACS
DOI
Please wait a minute...
For Selected:
Download Citations
EndNote
Ris
BibTeX
Toggle Thumbnails
Select
New Research Method for Residual Oil in Strong Heterogeneous Reservoirs at Extra Ultra⁃High Water Cut Stage
Li Jinman,Huo Hongbo,Hu Yong,Zhang Lei,Li Jinze
Abstract
(
438
)
HTML
PDF
(5399KB)(
182
)
Knowledge map
The vertical and horizontal heterogeneity of the reservoir in Bohai Q oilfield is strong, so it is difficult to accurately establish the geological model, and there is a problem of low fitting accuracy in the history of reservoir numerical simulation in ultra⁃high water cut period. Based on the theory of percolation mechanics, production logging data and streamline simulation are combined. The combination of the pipe method and the use of production log data to provide the amount of liquid production and water content and stratified injection amount to determine the residual oil saturation and its distribution at any point in the reservoir. By using this method, the measures of flow field regulation of water injection unit and water blockage of local well group are proposed. The output of oil wells is increased by 14 times, and the annual oil production of oilfield is negatively decreasing. The practice shows that the combination of production logging data and streamline simulation can effectively identify the remaining oil distribution, and provide scientific theoretical basis for the development and adjustment of highly heterogeneous reservoirs in ultra⁃high water cut stage.
2019, 39 (6): 43-47.
DOI:
10.3969/j.issn.1672-6952.2019.06.008
Select
Electrochemical Performance of A⁃Deficiency Double Perovskite Sr1.85MgMoO6-δ Anode
Yao Guibin,Cai Hongdong,Zhang Leilei,Xu Jingsheng,Song Zhaoyuan
Abstract
(
374
)
HTML
PDF
(1077KB)(
162
)
Knowledge map
Double perovskite oxide Sr1.85MgMoO6-δ was synthesized by sol⁃gel method in 5% H2/Ar, and its structural stability was characterized by XRD. The experimental results show that the structure and phase composition of Sr1.85MgMoO6-δ have not changed after high temperature oxidation treatment, which fully proves its structural stability. The conductivity, thermogravimetric and electrochemical impedance spectra of Sr1.85MgMoO6-δ and Sr2MgMoO6-δ were measured in the same environment. The experimental results show that Sr vacancy can effectively enhance the conductivity of the material itself and increase the oxygen vacancy of the material. In addition, the polarization impedance value Sr1.85MgMoO6-δ (2.26~0.56 Ω·cm2) in H2 is smaller than that in Sr2MgMoO6-δ (4.80~1.96 Ω·cm2) at 700~800 oC temperature. Therefore, Sr1.85MgMoO6-δ double perovskite material is a very promising medium temperature solid oxide fuel cell (SOFC) anode material.
2019, 39 (4): 28-33.
DOI:
10.3969/j.issn.1672-6952.2019.04.006
Select
Review of SOFC Anode with Resistance to Carbon Deposition
Zhang Leilei, Li Chuang, Song Zhaoyuan, Long Wen, Zhang Lei
Abstract
(
519
)
PDF
(1588KB)(
538
)
Knowledge map
Solid oxide fuel cells (SOFC) can convert the chemical energy of the fuel directly into electricity with high efficiency, low population and wide fuel applicability. Nibased ceramic material was used as the traditional SOFC anode. This anode shows carbon deposition and sulfur poisoning when natural gas was used as fuel for SOFC. Therefore, development of novel SOFC anode materials with good resistance to carbon deposition and sulfur poisoning has attracted considerable interest. This article reviews the recent developments of anode in SOFC with principal emphasis on the material aspects. In addition, the developments of carbon tolerant SOFC anode materials were presented from their properties. The emphasis will be placed on the development of perovskitetype anode material researches. Finally, this review will be concluded with its perspectives on the future research directions of this area.
2015, 35 (6): 6-11,19.
DOI:
10.3696/j.issn.1672-6952.2015.06.002
Select
The Fault Diagnosis Principle for Mine Hydraulic System Based on Wavelet Principle and Fluid Electrostatic Signals
Wang Xiaolei, Kan Zhe, Zhang Leilei
Abstract
(
385
)
PDF
(2747KB)(
266
)
Knowledge map
Mine hydraulic system fault diagnosis with a variety of forms can only rely on the experience and knowledge, and this restricts the application of the hydraulic system in mine equipments to a large extent. The simulation experiments were made and a new measuring and diagnosis method was proposed aiming at the phenomenon of appearing the cavitation in hydraulic system. Through the wavelet transform of the static random signal, it was found during the experimental and theoretical analysis that the process of using wavelet transform could accurately diagnose the cavitation appearing and cavitation occurs in hydraulic system of the moment, and it was a bigger help for the fault diagnosis of hydraulic system of the form by the cavitation of the oil pipe. The experimental results show that the method of hydraulic system fault diagnosis was feasible with the wavelet transform to the electrostatic signal, and the judgment was correct in about 95%.
2015, 35 (3): 65-68.
DOI:
10.3696/j.issn.1672-6952.2015.03.016
Select
Corrosion Inhibition of Q235 Steel by Acid Ionic Liquidin in HCl Solution
Li Mingli, Cao Shuyun, Meng Lingbo, Gui Jianzhou, Zhang Lei, Liu Dan
Abstract
(
473
)
PDF
(3392KB)(
311
)
Knowledge map
Corrosion inhibition effect of N(4sulfonic acid) butyl triethylammonium hydrogen sulfate((CH2)4SO3HTEA\]\[HSO4]) acid ionic liquid(IL) towards Q235 steel corrosion in 0.5 mol/L HCl solution was investigated by electrochemical measurements in 25 ℃. The results show that the IL suppressed corrosion processes of Q235 steel in HCl solutionand the best performance of inhibition could be obtained with the concentration of inhibitor 14 mmol/L. The X-ray photoelectron spectroscopy(XPS) demonstrates that the protectiue film is formed by adsorption on the Q235steel surface, which can cover the reative center and inhibit the Q235 steel corrosion in HCl solution.
2015, 35 (2): 17-21,31.
DOI:
10.3696/j.issn.1672-6952.2015.02.004
Select
Study on the Characteristic of Dynamic Interfacial Tension between EOR Surfactants and Shengli Crude Oils
Wang Wei, Tian Yan, Wan Sheng, Fang Hongbo, Zhang Lei, Zhang Lu
Abstract
(
421
)
PDF
(3383KB)(
450
)
Knowledge map
The dynamic interfacial tensions between five types of EOR surfactants and three types of Shengli crude oils were investigated, and the effect of surfactant concentration on interfacial tension was explored. The experimental results show that the different active components in crude oil could react under alkalescent condition and produce the surfaceactive soaps at the interface in situ. The interactions among the added surfactants, active components of crude oil and their products at interface together determined the characteristic behaviors of dynamic interfacial tension. Three types of characteristic dynamic interfacial tension curve might manifest as type "L", type "V" and type "W". The structure and concentration of surfactant and the type of crude oil were key factors impacting on the dynamic interfacial tension characteristics.
2015, 35 (2): 1-5,16.
DOI:
10.3696/j.issn.1672-6952.2015.02.001
Select
Investigation of BSCN0.630%GDC Composite Cathode for ITSOFC
Zhang Leilei, Chang Ying, Huang Jinhua, Song Zhaoyuan, Fu Yidan, Liu Mo
Abstract
(
427
)
PDF
(2430KB)(
300
)
Knowledge map
B a
0. 6
S r
0. 4
Co
0. 9
N b
0. 1
O
3 --δ
(BSCN) perovskitetype oxide was prepared by the solid state reaction. The high temperature chemical compatibility between BSCN0.6 and G d
0. 1
C e
0. 9
O
1. 9 -5
(GDC) were analyzed by XRD. XRD patterns indicate that a week solid solution between BSCN0.6 and GDC takes place after the BSCN0.6GDC composite material was calcined at high temperature. However, this solid solution does not show a negative effect on the performance of the cathode. The mixture of BSCN0.6 and GDC in a weight ratio of 70∶30 was used as SOFC composite cathode and the electrical property, thermal expansion behavior and electrochemical performance were investigated. The electrical conductivity was found to decrease with increasing GDC content|however, the thermal expansion coefficients (TEC) of BSCN0.630%GDC composite cathode decreased, which enhances the thermal match between the cathode and GDC electrolyte. With BSCN0.630%GDC as the electrode, the polarization resistance of a symmetrical cell BSCN0.630%GDC//GDC is only 0.047~0.012 Ω•cm2 in 700~800 ℃. Therefore, BSCN0.630%GDC composite material is a promising ITSOFC cathode.
2014, 34 (2): 4-8.
DOI:
10.3696/j.issn.1672-6952.2014.02.002
Select
reparation and Characterization of Perovskite Oxide Ba0.6Sr0.4Co0.9Nb0.1O3δ as a Novel Cathode Material for ITSOFCs
ZHANG Leilei, LI Zhou, CHEN Mingming, HE Tianmin
Abstract
(
505
)
PDF
(2551KB)(
207
)
Knowledge map
Perovskitetype oxide Ba0.6Sr0.4Co0.9Nb0.1O3δ (BSCN) was synthesized by the solid state reaction and investigated as a cathode for intermediatetemperature solidoxide fuel cells (ITSOFCs). XRD pattern indicated that BSCN crystallized in a singlephase perovskite with a cubic perovskite structure (Pm3m) and no evident reaction happened after the mixture of BSCN cathode and GDC electrolyte was sintered at 1 000 ℃ for 10 h. During the operating temperature of SOFCs (600~800 ℃), the electrical conductivity of BSCN reaches 21~27 S/cm. The thermal expansion coefficient value of 17.0 × 10-6/K has been measured for BSCN sample, which is much lower than that of SrCo0.9Nb0.1O3δ(SCN). This result indicated that Ba doping in SCN has a better thermal match to GDC electrolyte. Symmetrical cell with the configuration of BSCN/GDC/BSCN was used for the impedance measurements. The polarization resistance of BSCN cathode on GDC electrolyte is 0.026 Ω·cm2 at 750 ℃. With BSCN cathode, NiOCe0.8Sm0.2O1.9 anode and 300 μm thick GDC electrolyte, the maximum power density of single cell achieved 782 mW/cm2 at 800 ℃. All these results indicate that the BSCN oxide is a promising cathode candidate material for ITSOFCs.
2013, 33 (2): 6-10.
Select
M-ssbauer Spectra ofCo68.15Fe4.35Si12.5B15 by Low Frequency Pulse Magnetic Field
ZHANG Lei, GUO Hong
Abstract
(
348
)
PDF
(251KB)(
245
)
Knowledge map
Amorphous alloys ofCo68.15Fe4.35Si12.5B15 were treated by low frequency pulse magnetic field.The microstructure changes of amorphous specimens before and after treatment were observed by Mssbauer spectra and TEM.The results show that the nanocrystallization of amorphous alloy ofCo68.15Fe4.35Si12.5B15 can occur at low frequency pulse magnetic field.The precipitation content of the nanocrystalline phase α-Fe(Si) with bcc crystal structure is about 2.743%~23.960%,the grain size is 2~10 nm,and the quantity of crystallization have relation with the magnetic field intensity and pulse frequency.
2010, 30 (4): 76-79.
DOI:
10.3696/j.issn.1672-6952.2010.04.021
Select
Product Yield Model of Strengthened Delayed Coking
JIU Qiao-na, ZHAO De-zhi, ZHANG Lei,ZHU Yun-yan,ZHU Ying-di
Abstract
(
451
)
PDF
(170KB)(
292
)
Knowledge map
According to the action mechanism of delayed coking, the nature of raw materials and product yield were simulated by Matlab through the collected data. The results indicate that coke yield, liquid yield, and gas yield have a good multi-linear relationship with strengthened delayed coking feedstock density, residual carbon, molar ratio of hydrogen to carbon, and four crude oil components (resin and asphaltene, saturated hydrocarbons, and aromatic).
2010, 30 (3): 32-35.
DOI:
10.3696/j.issn.1672-6952.2010.03.009