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Synergistic emulsification of polyetheramine/nanofluid system as a novel viscosity reducer of acidic crude oil

Cao Yang, Guo Yanlin, Wu Tao, Sun Dejun

Materials Science Poland

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2023

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Vol. 41, No. 4

107--119

EN

Oil is a critical raw material for energy and industry, the depletion of conventional oil reserves necessitates efficient extraction and production of unconventional resources like acidic crude oil. However, its high viscosity poses significant challenges for transportation and processing. To address these challenges, this study developed a novel emulsion viscosity reducer. We designed a nanofluid based on a synergistic polyetheramine/nanofluid system consisting of alkyl ethoxy polyglycosides (AEG) as a green surfactant, SiO2 nanoparticles, and an organic alkali polyetheramine. The mixture was evaluated for its viscosity reduction and emulsification performance with acidic crude oi obtained from Qinghe oil production plant in Shengli Oilfield. The results showed that the optimized viscosity reducer achieved a remarkable reduction rate of 98.1% at 50◦C in crude oil viscosity from 6862 mPa·s to 129 mPa·s. This demonstrated the reducer effectively transformed acidic crude oil into a low viscosity oil-in-water (O/W) emulsion with high stability. Furthermore, the core imbibition simulation tests demonstrated that the viscosity reducer could improve the recovery of acidic crude oil from 29.6% to 49.4%, indicating the potential application of the optimized viscosity reducer in the exploitation of acidic crude oil. In conclusion, this study developed a novel emulsion viscosity reducer, which can reduce the viscosity and improve recovery of acidic crude oil by emulsifying into O/W emulsion. The optimized formula has potential for practical application in the exploitation of acidic crude oil.

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Comparative study of the parallel and angular electrical gripper for industrial applications

Fotuhi Mohammad Javad, Bingul Zafer

Acta Mechanica et Automatica

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2021

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Vol. 15, no. 2

66--73

EN

The aim of this paper is to study the position and power performances of an electrical lead screw-driven industrial gripper mechanism (LSDIGM). This work consists of designing and developing an electrical LSDIGM that has the potential to meet various demands in the automation industry and factories. The performances of both angular electrical gripper (AEG) and parallel electrical gripper (PEG) mechanisms were compared based on their position and power efficiency. The position efficiency of these electrical LSDIGM is computed from the position root mean square error (PRMSE) obtained from errors between the two measured positions (input incremental encoder and output linear encoder). In the experimental setup, a current sensor and a spring were employed to measure the current in the input of the system and the stiffness in the output of the system, respectively. The electrical power in the input of the electrical LSDIGM and the mechanical power in the output of the LSDIGMs were calculated using the current and the spring force, respectively. Finally, the power efficiency of these electrical LSDIGMs was examined and compared at different velocity circumstances.

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Wytwarzanie i charakteryzacja warstw SiO₂ na powierzchni SiC metodą utleniania termicznego

Kozłowski A., Dobrzański L., Pisarek M., Możdżonek M.

Elektronika : konstrukcje, technologie, zastosowania

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2011

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Vol. 52, nr 12

110-114

PL

Przeprowadzono procesy utleniania termicznego węglika krzemu (polityp 6H-SiC) określające kinetykę reakcji w temperaturze 1100°C w dwóch środowiskach utleniających (atmosferze suchego tlenu oraz pary wodnej). Grubość uzyskanych warstw była badana za pomocą profilografu Dektak150 firmy Veeco. Struktura tlenku badana była spektrofotometrem fourierowskim IFS 113v firmy Bruker w temperaturze pokojowej, w zakresie widmowym 400...4000 cm⁻¹ oraz za pomocą skaningowego mikroanalizatora elektronów Augera MICROLAB-350 firmy Thermo Electron (VG Scientific), który może być wykorzystywany opcjonalnie jako rentgenowski spektrometr fotoelektronów (XPS).

EN

Kinetics of thermal oxidations of silicon carbide (polytype 6H-SiC), have been determined for processes done in temperature 1100°C and two oxidant ambient (dry oxygen and water vapour). Thickness of SiO₂ layers has been measured using Veeco Dektak 150 Surface Profilometer. The structure of obtained layers were examined in room temperature in Bruker's Fourier Spectrometer IFS 113v in 400...4000 cm⁻¹ spectrum range. Moreover the high resolution Auger system also capable of performing multi-technique (XPS) analysis Microlab-350 (Thermo VG Scientific) was used.