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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

osition and perspectives of the oil-refining industry - comparison of Central and Eastern European Countries / Position and perspectives of the oil-refining industry - comparison of Central and Eastern European Countrie

Kuznetsova, Evgenia January 2009 (has links)
Being non-renewable source of energy, oil maintains the largest contributor to the energy mix of all counties in the world. Consequently, oil-refining industry is a field of particular concern for the governments and society. This work focuses on oil-refining industry in the countries of Eastern and Central Europe. This topic is very sensitive for CEE counties due to continuously rising energy prices, vulnerability of the supply security and current EC regulations concerning emissions trade and common environment policy. This thesis aims to answer to question what will happen to the industry in CEE counties after implication of new EC regulations and development of the renewable sources of energy. For this purpose, SWOT analysis of the industry in different counties was performed, highlighting major strengths and potential threats. Further analysis describes major mergers and acquisitions in the industry, FDI and current problems of trade imbalance. Particular attention is given to the security of supply and dangerous dependency on the crude oil imports. The results show that some EC policies and regulations could be potentially perilous for the counties which have large crude reserves and developed oil-refining and petrochemical industry, influencing such factors as cost of production and competitiveness of the product in the market. However, further development of renewable sources is often the only option available for the counties with no fossil fuel reserves and poor developed refining infrastructure, aimed to eliminate ever-increasing energy dependency.
2

Использование проектного управления при развитии нефтеперерабатывающей промышленности Ирака : магистерская диссертация / Use of project management in the development of the refining industry in Iraq

Алмусаеди, Х. К. А., Almusaedi, H. K. A. January 2020 (has links)
Целью исследования является разработка методических подходов и рекомендаций для процессов разработки и строительства нефтеперерабатывающих предприятий. Предметом исследования является организация и управление проектами строительства нефтеперерабатывающих предприятий в Ираке. В работе использованы основные инструменты проектного управления (структурные декомпозиции, календарный план работ, план управления рисками), а также инструменты определения причинно-следственных связей. Дана оценка эффективности проекта для ключевых участников. / The aim of the study is to develop methodological approaches and recommendations for the development and construction of oil refineries. The subject of the research is the organization and management of projects for the construction of oil refineries in Iraq. The work used the main tools of project management (structural decomposition, work schedule, risk management plan), as well as tools for determining cause-and-effect relationships. An assessment of the effectiveness of the project for key participants is given.
3

Tratabilidade de águas residuárias contendo poluentes perigosos: estudo de caso. / Treatability of hazardous industrial wastewater: case study.

Morita, Dione Mari 29 September 1993 (has links)
O trabalho foi desenvolvido com o objetivo de caracterizar e estudar formas de tratamento de águas residuárias de indústrias de refino de óleo lubrificante e de recuperação de solventes. A fase preliminar teve por objetivo avaliar a biodegradabilidade do despejo combinado dessas duas indústrias. A segunda foi realizada em instalação piloto composta, basicamente, de uma unidade de arraste com ar/tanque de equalização, tanques de correção de pH e de aeração com tempos de detenção distintos, seguidos de tanques de sedimentação. Foram executados testes para avaliar a remoção de material solúvel em n-hexano do despejo da indústria de refino de óleo lubrificante e do efluente final. A unidade de arraste com ar difuso operando com subpressão de 15 mmhg a saída dos gases, vazão específica de ar de 20 ml/l min. E tempo de detenção de 5 dias foi eficiente na remoção de acetona, piridina, benzeno, tolueno, hexano, metil etil cetona e provavelmente solventes clorados. Não apresentou remoção significativa de álcoois, que foram eficientemente degradados no sistema biológico subsequente. Obteve-se remoções superiores a 90%, em termos de dbo e dqo, no processo biológico com tempos de detenção de 20 e 30 dias, e em torno de 80% para os demais. Os sistemas biológicos responderam bem as cargas transientes de solventes, exceto para o tolueno e o álcool isopropílico. / Traditionally, raw materials from solvent recovery and from reclaimed lubricating oil industries are considered hazardous solid waste. Consequently, the best control technology is incineration. This work was developed in order to characterize and to study ways of treating wastewaters from lubricating oil refinery and solvent recovery industries. The experimental part was divided in two phases. The preliminar step aimed to evaluate the biodegradability of combined wastewater from both industries. The second phase was basically carried out in a pilot plant composed by an air stripping unit/equalization tank, pH correction tanks and bioreactors with different retention times, followed by sedimentation tanks. Other than these assays, tests were performed to evaluate the removal of soluble material in n-hexane of the wastewater of the lubricating oil refinery industry and of the supernatant of the sedimentation tank after the bioreactor of 20 days retention.The buble aeration unit operating with a 15 mmHg suppresion to the gas exit, with a specific air flow of 20 mL/L.min. and with a retention time of 5 days was efficient to remove acetone, pyridine, benzene, toluene, hexane, methyl ethyl ketone and probably chlorinated solvents. There was no significative removal of alcohols, that were efficiently degraded in the subsequent biological system. BOD and COD removal efficiencies were better than 90% in the biological process with retention times of 20 and 30 days, and about 80% for the rest. The responses of biological systems to the transient inputs of solvents were well, except for toluene and isopropilic alcohol. Several physico-chemical processes for soluble material in n-hexane removal were studied. The only one to present effluent concentration under the legal limit was the addition of the sodium xylene-sulphonate base demulsifier to the supernatant of the sedimentation tank the bioreactor of 20 days retention.
4

Tratabilidade de águas residuárias contendo poluentes perigosos: estudo de caso. / Treatability of hazardous industrial wastewater: case study.

Dione Mari Morita 29 September 1993 (has links)
O trabalho foi desenvolvido com o objetivo de caracterizar e estudar formas de tratamento de águas residuárias de indústrias de refino de óleo lubrificante e de recuperação de solventes. A fase preliminar teve por objetivo avaliar a biodegradabilidade do despejo combinado dessas duas indústrias. A segunda foi realizada em instalação piloto composta, basicamente, de uma unidade de arraste com ar/tanque de equalização, tanques de correção de pH e de aeração com tempos de detenção distintos, seguidos de tanques de sedimentação. Foram executados testes para avaliar a remoção de material solúvel em n-hexano do despejo da indústria de refino de óleo lubrificante e do efluente final. A unidade de arraste com ar difuso operando com subpressão de 15 mmhg a saída dos gases, vazão específica de ar de 20 ml/l min. E tempo de detenção de 5 dias foi eficiente na remoção de acetona, piridina, benzeno, tolueno, hexano, metil etil cetona e provavelmente solventes clorados. Não apresentou remoção significativa de álcoois, que foram eficientemente degradados no sistema biológico subsequente. Obteve-se remoções superiores a 90%, em termos de dbo e dqo, no processo biológico com tempos de detenção de 20 e 30 dias, e em torno de 80% para os demais. Os sistemas biológicos responderam bem as cargas transientes de solventes, exceto para o tolueno e o álcool isopropílico. / Traditionally, raw materials from solvent recovery and from reclaimed lubricating oil industries are considered hazardous solid waste. Consequently, the best control technology is incineration. This work was developed in order to characterize and to study ways of treating wastewaters from lubricating oil refinery and solvent recovery industries. The experimental part was divided in two phases. The preliminar step aimed to evaluate the biodegradability of combined wastewater from both industries. The second phase was basically carried out in a pilot plant composed by an air stripping unit/equalization tank, pH correction tanks and bioreactors with different retention times, followed by sedimentation tanks. Other than these assays, tests were performed to evaluate the removal of soluble material in n-hexane of the wastewater of the lubricating oil refinery industry and of the supernatant of the sedimentation tank after the bioreactor of 20 days retention.The buble aeration unit operating with a 15 mmHg suppresion to the gas exit, with a specific air flow of 20 mL/L.min. and with a retention time of 5 days was efficient to remove acetone, pyridine, benzene, toluene, hexane, methyl ethyl ketone and probably chlorinated solvents. There was no significative removal of alcohols, that were efficiently degraded in the subsequent biological system. BOD and COD removal efficiencies were better than 90% in the biological process with retention times of 20 and 30 days, and about 80% for the rest. The responses of biological systems to the transient inputs of solvents were well, except for toluene and isopropilic alcohol. Several physico-chemical processes for soluble material in n-hexane removal were studied. The only one to present effluent concentration under the legal limit was the addition of the sodium xylene-sulphonate base demulsifier to the supernatant of the sedimentation tank the bioreactor of 20 days retention.

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