213 research outputs found

    Анализ применения компрессорной станции COMPEX-SM при подготовке газа на Советском нефтяном месторождении (Томская область)

    Get PDF
    Объектом исследования является компрессорная станция на установке предварительного сброса воды на Советском нефтяном месторождении. Цель исследования – повышение уровня утилизации попутного нефтяного газа на Советском нефтяном месторождении. В результате работы выполнили задачи: 1.Анализ современных способов утилизации попутного нефтяного газа; 2.Выбор и обоснованный состав компрессорной станции COMPLEX-SM на установке предварительного сброса воды; 3.Произведен расчет экономической эффективности применения компрессорной станции на Советском нефтяном месторождении.The object of the study is a compressor station at the pre-discharge water installation at the Sovetsky oil field. The purpose of the study is to increase the level of utilization of associated petroleum gas at the Soviet oil field. As a result, the tasks were completed: 1. Analysis of modern methods of utilization of associated petroleum gas; 2. Selection and reasonable composition of the COMPLEX-SM compressor station at the water pre-discharge unit; 3. The calculation of the economic efficiency of the compressor station application at the Soviet oil field is made

    Electrochemical activation of molecular nitrogen at the Ir/YSZ interface.

    Get PDF
    Nitrogen is often used as an inert background atmosphere in solid state studies of electrode and reaction kinetics, of solid state studies of transport phenomena, and in applications e.g. solid oxide fuel cells (SOFC), sensors and membranes. Thus, chemical and electrochemical reactions of oxides related to or with dinitrogen are not supposed and in general not considered. We demonstrate by a steady state electrochemical polarisation experiments complemented with in situphotoelectron spectroscopy (XPS) that at a temperature of 450 °C dinitrogen can be electrochemically activated at the three phase boundary between N2, a metal microelectrode and one of the most widely used solid oxide electrolytes—yttria stabilized zirconia (YSZ)—at potentials more negative than E = −1.25 V. The process is neither related to a reduction of the electrolyte nor to an adsorption process or a purely chemical reaction but is electrochemical in nature. Only at potentials more negative than E = −2 V did new components of Zr 3d and Y 3d signals with a lower formal charge appear, thus indicating electrochemical reduction of the electrolyte matrix. Theoretical model calculations suggest the presence of anionic intermediates with delocalized electrons at the electrode/electrolyte reaction interface. The ex situSIMS analysis confirmed that nitrogen is incorporated and migrates into the electrolyte beneath the electrode

    D1.15 Impact Assessment Report for RP 2

    Get PDF
    This deliverable provides the impact assessment report for RP2 (M16-M30). It provides an update on the overall and specific objectives of the EXCELSIOR project that have been achieved within RP2. This task undertakes the establishment of a methodology for the yearly monitoring of the impact of the different activities carried out by Eratosthenes Centre of Excellence (ECoE) and its partners through EXCELSIOR against a set of quantified targets. The list of Key Performance Indicators established in D1.12 has been revised based on the comments received by the EXCELSIOR project reviewers on 23 June 2021 following the first project review. This list is hereby updated to reflect the activities of RP2. By monitoring the impact for the RP2, it will provide direction of the activities needed to fulfil the KPIs for the following reporting periods. The impact assessment report will be used to assess the implementation of the work plan and adjust the activities in agreement with WP and task Leaders to ensure the achievement of the Project’s strategic objectives. WP1 provides the KPI monitoring framework and general quality processes, while the WP3 defines concrete actions affecting all other WPs for meeting the Impact KPIs. This task’s activities will be coordinated with WP3 activities on strategy definition as a continuous process, in order to update the human resources, infrastructure acquisition and overall work plan and to meet new priorities identified. The analysis outputs will update the Project Action Plan of Task 1.1. The following activities were examined and assessed according to the KPIs. These activities include proposals, dissemination events, publications, academia, networks, etc. The impact for each activity was also included

    Earth Observation in the EMMENA Region: Scoping Review of Current Applications and Knowledge Gaps

    Get PDF
    Earth observation (EO) techniques have significantly evolved over time, covering a wide range of applications in different domains. The scope of this study is to review the research conducted on EO in the Eastern Mediterranean, Middle East, and North Africa (EMMENA) region and to identify the main knowledge gaps. We searched through the Web of Science database for papers published between 2018 and 2022 for EO studies in the EMMENA. We categorized the papers in the following thematic areas: atmosphere, water, agriculture, land, disaster risk reduction (DRR), cultural heritage, energy, marine safety and security (MSS), and big Earth data (BED); 6647 papers were found with the highest number of publications in the thematic areas of BED (27%) and land (22%). Most of the EMMENA countries are surrounded by sea, yet there was a very small number of studies on MSS (0.9% of total number of papers). This study detected a gap in fundamental research in the BED thematic area. Other future needs identified by this study are the limited availability of very high-resolution and near-real-time remote sensing data, the lack of harmonized methodologies and the need for further development of models, algorithms, early warning systems, and services

    Electrocatalytic activity of Au nanoparticles onto TiO2 nanotubular layers in oxygen electroreduction reaction: size and support effects

    Get PDF
    Electrocatalytic activity of both bare high-ordered TiO2 nanotubes (TNTs) and gold nanoparticles (Au NPs) loaded TNTs toward oxygen reduction reaction (ORR) has been examined by cyclic voltammetry (CV). Cyclic voltammograms for Au NPs-TNT electrodes are characterized by an additional wave observed at less negative potentials which is responsible for oxygen electroreduction on the surface of gold NPs. The overpotential for O-2 reduction on the Au surface grows with increasing the temperature of TNT annealing and the Au NPs size. The nature of the effects observed was explained by peculiarities of the electron transport through Schottky barrier formed at the Au NPs - TiO2 interface. The width of the Schottky barrier, determined by semiconductor doping level and Au NPs size, plays a key role in the mechanism of electron transport through the space charge region. (C) 2016 Elsevier Ltd. All rights reserved

    CATALYTIC AND ELECTROCATALYTIC PHENOMENA IN HIGH TEMPERATURE SOLID ELECTROLYTE ELECTROCHEMICAL CELLS

    No full text
    THE ANODIC OXIDATION OF CH3OH WAS INVESTIGATED IN SOLID ELECTROLYTE FULL CELLS (1 BAR, 820-970K).CH3OH CAN BE SELECTIVELY OXIDATED TO H2CO WITH SELECTIVITY ONTHE ORDER OF 90% AND ELECTRICAL ENERGY CONGENERATION. IT WAS ALSO FOUND THAT THE CATALYTIC ACTIVITY AND SELECTIVITY OF AG AND PT FOR THE DEHYDROGENERATION-DECOMPOSITION AND OXIDATION OF CH3OH RESPECTIVELY, CAN BE MARKEDLY AFFECTED FROM THE ELECTROCHEMICALLY PUMPED O2 TO OR FROM THE CATALYTIC SURFACE. THESE CHANGESCAN BE ESSENTIALLY ATTRIBUTED TO THE CHANGES IN THE CATALYST WORK FUNCTION. THE MATHEMATICAL MODEL OF SOLID STATE MONOLITHIC ELECTROCHEMICAL REACTORS WAS DEVELOPED. IT WAS FOUND THAT THE EFFECTIVENESS FACTOR OF A CATALYTIC PARTICLE IN ATRICKLE BED REACTOR, CAN BE EXCHANGED BY A FACTOR OF 2 WHEN THE WETTING EFFICIENCY CHANGES FAST WITH TIME AS IT IS THE CASE IN THE PULSE- FLOW REGIME, COMPARED WITH THE EFFECTIVENESS OF THE PARTICLE OPERATING IN THE TRICKLE-FLOW REGIME.ΜΕΛΕΤΗ ΑΝΟΔΙΚΗΣ ΟΞΕΙΔΩΣΗΣ ΤΗΣ CH3OH, ΣΕ ΚΕΛΙΑ ΚΑΥΣΙΜΟΥ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ (1 BAR, 820-970K). Η CH3OH ΜΠΟΡΕΙ ΝΑ ΟΞΕΙΔΩΘΕΙ ΕΚΛΕΚΤΙΚΑ ΠΡΟΣ H2CO ΜΕ ΕΚΛΕΚΤΙΚΟΤΗΤΑΤΗΣ ΤΑΞΗΣ ΤΟΥ 90%, ΜΕ ΤΑΥΤΟΧΡΟΝΗ ΠΑΡΑΓΩΓΗ ΗΛΕΚΤΡΙΚΗΣ ΕΝΕΡΓΕΙΑΣ. H ΚΑΤΑΛΥΤΙΚΗ ΕΝΕΡΓΟΤΗΤΑ ΚΑΙ ΕΚΛΕΚΤΙΚΟΤΗΤΑ ΤΟΥ AG ΚΑΙ PT ΓΙΑ ΤΗ ΔΙΑΣΠΑΣΗ-ΑΦΥΔΡΟΓΟΝΩΣΗ ΚΑΙ ΟΞΕΙΔΩΣΗ ΤΗΣ CH3OH ΑΝΤΙΣΤΟΙΧΑ, ΜΠΟΡΕΙ ΝΑ ΕΠΗΡΕΑΣΤΕΙ ΣΗΜΑΝΤΙΚΑ ΑΠΟ ΤΟ ΗΛΕΚΤΡΟΧΗΜΙΚΑ ΑΝΤΛΟΥΜΕΝΟ Ο2 ΠΡΟΣ 'Η ΑΠΟ ΤΗΝ ΚΑΤΑΛΥΤΙΚΗ ΕΠΙΦΑΝΕΙΑ. ΑΥΤΕΣ ΟΙ ΜΕΤΑΒΟΛΕΣ ΕΞΗΓΟΥΝΤΑΙ ΑΝ ΛΗΦΘΕΙ ΥΠ' ΟΨΗ Η ΜΕΤΑΒΟΛΗ ΣΤΟ ΕΡΓΟ ΕΞΟΔΟΥ ΤΟΥ ΚΑΤΑΛΥΤΗ. ΑΝΑΠΤΥΞΗ ΤΟΥ ΜΑΘΗΜΑΤΙΚΟΥ ΜΟΝΤΕΛΟΥ ΗΛΕΚΤΡΟΧΗΜΙΚΩΝ ΑΝΤΙΔΡΑΣΤΗΡΩΝ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ ΜΟΝΟΛΙΘΙΚΟΥ ΤΥΠΟΥ. Η ΔΥΝΑΜΙΚΗ ΕΠΙΛΥΣΗ ΤΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ ΕΝΟΣ ΚΑΤΑΛΥΤΙΚΟΥ ΣΩΜΑΤΙΔΙΟΥ ΤΟ ΟΠΟΙΟ ΒΡΙΣΚΕΤΑΙ ΣΕ ΑΝΤΙΔΡΑΣΤΗΡΑ ΤΡΙΩΝ ΦΑΣΕΩΝ (ΔΙΑΒΡΕΓΜΕΝΗ ΚΛΙΝΗ) ΚΑΙ ΣΕ ΣΥΝΘΗΚΕΣ ΠΑΛΛΟΥΣΑΣ ΡΟΗΣ, ΑΠΕΔΕΙΞΕ ΟΤΙ Ο ΜΕΣΟΣ ΠΑΡΑΓΟΝΤΑΣ ΑΠΟΤΕΛΕΣΜΑΤΙΚΟΤΗΤΑΣ ΜΠΟΡΕΙ ΝΑ ΑΥΞΗΘΕΙ ΜΕΧΡΙ ΚΑΙ 100% ΣΕ ΣΧΕΣΗ ΜΕ ΤΗΝ ΑΠΟΔΟΣΗ ΤΟΥ ΣΩΜΑΤΙΔΙΟΥ ΥΠΟ ΣΥΝΘΗΚΕΣ ΣΥΝΕΧΟΥΣ ΡΟΗΣ

    CATALYTIC AND ELECTROCATALYTIC ACTIVITY OF Pt-Ru/C ELECTRODE FOR HYDROGEN OXIDATION IN ALKALINE

    No full text
    The kinetics of the oxidation of H2 on PtRu/C gas-diffusion electrode was studied by interfacing the electrode with aqueous electrolytes at different pH values. The conducting electrolytes were KOH and HClO4 aqueous solutions with different concentrations. It is shown that the nature of the aqueous electrolyte plays the role of an active catalyst support for the PtRu/C electrode which drastically affects its catalytic properties. During the aforementioned interaction, termed electrochemical metal support interaction (EMSI), the electrochemical potential of the electrons at the catalyst Fermi level is equalised with the electrochemical potential of the solvated electron in the aqueous electrolyte. The electrochemical experiments carried out at various pH values showed that the electrochemical promotion catalysis (EPOC) is more intense when the catalyst-electrode is interfaced with electrolytes with high pH values where the OH– ionic conduction prevails. It was concluded that similar to the solid state electrochemical systems EPOC proceeds through the formation of a polar adsorbed promoting layer of , electrochemically supplied by the OH- species, at the three phase boundaries of the gas exposed gas diffusion catalyst-electrode surface
    corecore