توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Risk analysis of furnace operation in distillation column using Hazop procedures
نویسنده(ها): ، ، ،
اطلاعات انتشار: همایش بین المللی HSE در صنعت نفت و گاز، سال
تعداد صفحات: ۹
Increasing technological complexity with social and legal pressures has made it necessary to improve safety systems. This need is particularly strong in the design and operation of chemical plants. Hazard and Operability study (Hazop) is a method of systematically identifying every conceivable process deviation, its abnormal causes and adverse hazardous consequences in a chemical plant. Distillation unit, one of the important parts of the studied petroleum refinery, was built in 1992. Although a need for improving distillation unit’s safety system has been recognized, there were less systematical attempts for preventing dangerous accidents. The furnace that is a reboiler of distillation column and heater for the produced diesel is the most important and dangerous part of the unit. This paper presents a safety analysis for furnace using Hazop procedure. Useful recommendation is presented to reduce ecological, personnel and asset risk ranking.<\div>

۲Risk analysis of a distillation column’s feed using Hazop procedures
نویسنده(ها): ، ، ،
اطلاعات انتشار: ششمین کنگره بین المللی مهندسی شیمی، سال
تعداد صفحات: ۶
Increasing technological complexity with social and legal pressures has made it necessary to improve safety systems. This need is particularly strong in the design and operation of chemical plants. Hazard and Operability study (Hazop) is a method of systematically identifying every conceivable process deviation, its abnormal causes and adverse hazardous consequences in a chemical plant.Distillation unit is one of the most important parts of a petroleum refinery. The qualities of a distillation unit’s products are directly affected by feed’s properties. Although a need for improving safety systems of studied refinery’s feed has been recognized, there were less systematical attempts for preventing dangerous accidents. This paper presents a safety analysis for feed using Hazop procedure. Useful recommendations are presented to reduce ecological, personel and asset risk ranking.<\div>

۳Application of Hazard and Operability Study Method to Evaluate Environmental Risk of Incinerator in a Sulphur Recovery Unit
نویسنده(ها): ،
اطلاعات انتشار: چهارمین همایش تخصصی مهندسی محیط زیست، سال
تعداد صفحات: ۶
Hazard and Operability study (HAZOP) is the most widely used methodology that is used nowadays in the world as a tool for hazards identification. The sulphur recovery unit (SRU) is one of the most important parts of gas purification process where the acid gas converted to sulphur by the Claus process. The tail gas goes to incinerator where the H2S and sulphur vapour are oxidized to SO2. This paper presents a safety analysis for incinerator using HAZOP procedure. All of the deviations were considered by HAZOP team and the recommendations were suggested to reduce the likelihood of consequences that mostly were related to the environmental risk. The highest calculated risk level related to decrease temperature of incinerator due to lack of sufficient air or duty which can contaminates environment. The results demonstrate that any deviation in operation of SRU plant has a severe effect on the environment<\div>

۴Decreasing CO2 Emission of Hydrogen Plant in the Refinery
نویسنده(ها): ، ،
اطلاعات انتشار: چهارمین همایش تخصصی مهندسی محیط زیست، سال
تعداد صفحات: ۱۰
Natural gas is often described as the cleanest fossil fuel, producing less carbon dioxide per joule delivered than either coal or oil. However, natural gas produced about 5,300 Mt\yr of total globe CO2 emissions which has severe effect on the environment as a greenhouse gas. In the oil refinery, hydrogen generation is one of the most significant contributors of CO2 and has more than 25% of the total refinery CO2 emissions. In this paper, three distinct solutions has been investigated to decrease CO2 emission of hydrogen plant in Bandar Abbas refinery, including export steam minimization, combustion air preheating and adding pre–reformer. The results are demonstrated that the combustion air preheating is the most economical method, whereas export steam minimization can up to around 16% CO2 curtailing. Considerations all three options can reduce CO2 emission about 32%.<\div>

۵Hazard Evaluation of Catalytic Converters of Sulfur Recovery Unit Using HAZOP Procedures
نویسنده(ها): ، ،
اطلاعات انتشار: اولین کنفرانس بین المللی نفت، گاز، پتروشیمی و نیروگاهی، سال
تعداد صفحات: ۸
Hazard and Operability (HAZOP) study is the most widely used methodology in the world as a tool for hazards identification. Sulfur recovery unit (SRU)is one of the most important parts of gas purification process where the acid gas in the form of H2S is converted to liquid elemental sulfur. Thispaper presents a hazard evaluation for the converter sections using HAZOP procedure. All of the deviations were considered by HAZOP team andthe recommendations were suggested to reduce thelikelihood of consequences that mostly were related to the environmental risk. The efficiency of SRU is strongly associated with the performance of converters. Decrease in efficiency of SRU can lead to more SO2 emission and environmental pollution.Efficiency drop is the most important consequence of entrance of excess air into catalytic converters. Purging, double block and bleed systems should be installed and commissioning procedure should be performed completely<\div>

۶THE DESIGN AND TECHNICAL REVIEW OF AN ABSORPTION COOLING CYCLE USING SOLAR ENERGY
نویسنده(ها): ، ، ،
اطلاعات انتشار: سومین همایش ملی تکنولوژی های نوین در شیمی، پتروشیمی و نانو ایران، سال
تعداد صفحات: ۱۰
In the present study, a solar system is designed for a residential building with an infrastructure of 1200 square meters and 1050 square meters of ventilated useful space in Haji–Abad city. This system is suitable for integrating solar and cooling systems. It is a single–effect absorption chiller with hot water supply and drainpipe collector. Natural gas consumption in ordinary absorption chiller was 44.4 cubic meters per hour. After calculating the thermal and the combustibility value of gas, natural gas consumption in solar absorption chiller was 29.7 cubic meters per hour less than the initial state, which is very economical. The functioning period of this system has been considered for 9 months. The results show that the initial costs are low and the running costs are high in ordinary absorption chillers while the reverse holds true for solar absorption chillers. This can be a new option of using absorption chillers with a capacity over 70 tons of refrigeration in absorption cycles that use solar energy<\div>
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