Exergy analysis of an atmospheric residue desulphurization hydrotreating process for a crude oil refinery

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Poland Jelihi ◽  
Edwin Zondervan
Keyword(s):  
Crude Oil ◽  
Energy Use ◽  
Oil Refinery ◽  
Exergy Destruction ◽  
Exergetic Efficiency ◽  
Atmospheric Residue ◽  
Chemical Exergy ◽  
Exergetic Analysis ◽  
Renewable Hydrogen ◽  
Petroleum Reserves

Abstract The exhaustion of petroleum reserves and the declining supply of conventional feedstock have forced refineries to use heavier crude oil in their production. Removing the undesirable components containing sulphur and metals in the atmospheric residue (AR) fraction requires extensive catalytic hydrotreating (HT) atmospheric residue desulphurization (ARDS) process. In this work, we endeavour to collect and present a comprehensive dataset to develop and simulate the ARDS HT model. This model is then used for an exergetic analysis to evaluate the performance of the ARDS HT model regarding the exergy destruction, the location of losses and exergetic efficiency. The massive exergy destruction is caused by significant differences in chemical exergy of source and product streams during separations, fractionation and reactions. The exergy destruction in the equipment independent of chemical exergies such as heat exchangers, pumps and compressors is relatively low. This exergetic analysis revealed that the majority of the processing equipment in the ARDS HT process performed satisfactorily. However, the remaining equipment requires improvement for its performance in regards to exergetic efficiency or/and avoidable exergetic losses. To enhance the efficiency of the equipment that is intensive in terms of exergy and energy use, the use of clean and high purity renewable hydrogen and several process rectification is proposed.

scholarly journals Exergetic analysis of the process of pre-treatment of soybean oil for the production of biodiesel

2020 ◽  
Vol 15 (44) ◽  
Author(s):  
Marina Marques da Silva ◽  
Rômulo Maziero ◽  
Bruno Dorneles de Castro ◽  
Juan Carlos Campos Rubio
Keyword(s):  
Soybean Oil ◽  
Raw Materials ◽  
Exergy Efficiency ◽  
Biodiesel Production ◽  
Exergetic Efficiency ◽  
Chemical Exergy ◽  
Pre Treatment ◽  
Exergetic Analysis ◽  
Materials Used ◽  
Installed Capacity

The raw materials used for the production of biodiesel can be vegetable oil, animal tallow or residual fat. Among them, the use of soybean oil stands out. The present study aims to analyze the exergy efficiency of the soybean oil pretreatment process of a biofuel plant in the state of Minas Gerais, with an installed capacity of 152 million liters/year of biodiesel. For that, the calculation of the chemical exergy and the physical exergy of the flows related to the process of refining the oil for biodiesel production was carried out. Plant operating parameters were in order to calculate the exergy efficiency of the process and the mass flow to perform the mass balance of the analyzed plant. The exergetic efficiency of the soybean oil pretreatment process was 88% and destroyed exergy or irreversibility of approximately 11%. Therefore, the yield of the chemical reactions of the process were satisfactory.

Energetic properties of peat saturated with petroleum products

2020 ◽  
Vol 13 (2) ◽  
pp. 105-109
Author(s):  
E. S. Dremicheva
Keyword(s):  
Crude Oil ◽  
Diesel Fuel ◽  
Energy Use ◽  
Experimental Studies ◽  
Calorific Value ◽  
Petroleum Products ◽  
Ash Content ◽  
Motor Oil ◽  
Initial Sample

This paper presents a method of sorption using peat for elimination of emergency spills of crude oil and petroleum products and the possibility of energy use of oil-saturated peat. The results of assessment of the sorbent capacity of peat are presented, with waste motor oil and diesel fuel chosen as petroleum products. Natural peat has been found to possess sorption properties in relation to petroleum products. The sorbent capacity of peat can be observed from the first minutes of contact with motor oil and diesel fuel, and significantly depends on their viscosity. For the evaluation of thermal properties of peat saturated with petroleum products, experimental studies have been conducted on determination of moisture and ash content of as-fired fuel. It is shown that adsorbed oil increases the moisture and ash content of peat in comparison with the initial sample. Therefore, when intended for energy use, peat saturated with petroleum products is to be subjected to additional drying. Simulation of net calorific value has been performed based on the calorific values of peat and petroleum products with different ratios of petroleum product content in peat and for a saturated peat sample. The obtained results are compared with those of experiments conducted in a calorimetric bomb and recalculated for net calorific value. A satisfactory discrepancy is obtained, which amounts to about 12%. Options have been considered providing for combustion of saturated peat as fuel (burnt per se and combined with a solid fuel) and processing it to produce liquid, gaseous and solid fuels. Peat can be used to solve environmental problems of elimination of emergency spills of crude oil and petroleum products and as an additional resource in solving the problem of finding affordable energy.

Radiation doses and hazards from processing of crude oil at the Tema oil refinery in Ghana

2011 ◽  
Vol 148 (3) ◽  
pp. 318-328 ◽  
Author(s):  
E. O. Darko ◽  
D. O. Kpeglo ◽  
E. H. K. Akaho ◽  
C. Schandorf ◽  
P. A. S. Adu ◽  
...  
Keyword(s):  
Crude Oil ◽  
Oil Refinery ◽  
Radiation Doses

scholarly journals Draft Genome Sequence of Hydrocarbon-Degrading Staphylococcus saprophyticus Strain CNV2, Isolated from Crude Oil-Contaminated Soil from the Noonmati Oil Refinery, Guwahati, Assam, India

2016 ◽  
Vol 4 (3) ◽  
Author(s):  
Arghya Mukherjee ◽  
Bobby Chettri ◽  
James S. Langpoklakpam ◽  
Arvind K. Singh ◽  
Dhrubajyoti Chattopadhyay
Keyword(s):  
Crude Oil ◽  
Genome Sequence ◽  
Contaminated Soil ◽  
Draft Genome ◽  
Oil Refinery ◽  
Draft Genome Sequence ◽  
Coding Sequences ◽  
First Report ◽  
Staphylococcus Saprophyticus

Here, we report the 2.6 Mb draft genome sequence of hydrocarbon-degrading Staphylococcus saprophyticus strain CNV2, isolated from oil-contaminated soil in Guwahati, India. CNV2 contains 2,545 coding sequences and has a G+C content of 33.2%. This is the first report of the genome sequence of an S. saprophyticus adapted to an oil-contaminated environment.

scholarly journals Advanced exergetic analysis of a heat pump providing space heating in built environment

Energetika ◽  
2017 ◽  
Vol 63 (3) ◽  
Author(s):  
Volodymyr A. Voloshchuk
Keyword(s):  
Built Environment ◽  
Energy Conversion ◽  
Heat Pump ◽  
System Component ◽  
Space Heating ◽  
Exergy Destruction ◽  
Operating Modes ◽  
Conversion System ◽  
Energy Conversion System ◽  
Exergetic Analysis

In addition to conventional exergy-based methods, advanced exergetic analyses consider the interactions among components of the energy-conversion system and the real potential for improving each system component. The paper demonstrates the results of application of a detailed advanced exergetic analysis to a wastewater source heat pump providing space heating in the built environment. In order to determine thermodynamic parameters of the refrigeration vapour compression cycle in different operating modes, the simulation model has been used. The analysis includes splitting the exergy destruction within each component of a heat pump into unavoidable, avoidable, endogenous and exogenous parts as well as detailed splitting of the avoidable exogenous exergy destruction. Besides, variabilities of heating demands of a building within both the chosen heating season and also from year to year are taken into account. Distribution of the split exergy destructions during different periods of time is also presented for the analysed cases of the heat pump and built environment. It is shown that in the investigated system only about 50% of the total annual destruction in components of the heat pump can be avoided. About 30…40% of this avoidable thermodynamic inefficiency is caused by interactions among components. Based on the applied advanced exergetic analysis it is possible to receive more precise and useful information for better understanding and improving the design and operation of the analysed energy-conversion system.

scholarly journals Production of glycolipid biosurfactant during crude oil degradation by the novel indigenous isolated Achromobacter kerstersii LMG3441

2020 ◽  
Vol 82 (10) ◽  
pp. 2134-2147
Author(s):  
Somayeh Kazemzadeh ◽  
Nafiseh Sadat Naghavi ◽  
Zarrindokht Emami-Karvani ◽  
Giti Emtiazi ◽  
Masoud Fouladgar
Keyword(s):  
Crude Oil ◽  
High Surface ◽  
Oil Refinery ◽  
Gas Chromatography Mass Spectrometry ◽  
Klebsiella Pneumonia ◽  
Glycolipid Biosurfactant ◽  
Rdna Sequencing ◽  
Degrading Bacteria ◽  
High Resolution Gas Chromatography ◽  
Refinery Plant

Abstract This study aimed to find biosurfactant producing and crude oil-degrading bacteria able to decontaminate crude oil from wastewater. The bacteria that were isolated from contaminated sites in an oil refinery plant in Isfahan, Iran, were identified by 16S rDNA sequencing as Achromobacter kerstersii strain LMG3441, Klebsiella pneumonia strain SKBA6, and Klebsiella variicola strain SKV2. According to the results obtained from different tests for the production of biosurfactant among three strains, only Achromobacter kerstersii strain LMG3441 was selected for further study. The pattern of residual hydrocarbons was analyzed by high-resolution gas chromatography-mass spectrometry (GC-MS). This novel and indigenous strain was capable of producing the highest amount of a glycolipid biosurfactant (7.81 g/L) in MSM (mineral salt medium) with 1% (v/v) crude oil as the only source of carbon and energy. The compound showed high surface activation capacity with reduction of surface tension from 40 mN m–1 in the control to 23.3 mN m–1 by the bacterium. The results of GC-MS for assessment of residual hydrocarbons in the MSM and comparison with crude oil as a control showed that 53% of the hydrocarbons in the crude oil were consumed by this novel strain.

scholarly journals About the Correlation Between Crude Oil Corrosiveness and Results From Corrosion Monitoring in an Oil Refinery

CORROSION ◽  
10.5006/1940 ◽  
2016 ◽  
Vol 72 (6) ◽  
pp. 843-855 ◽  
Author(s):  
Philipp Schempp ◽  
Karsten Preuß ◽  
Micha Tröger
Keyword(s):  
Crude Oil ◽  
Oil Refinery ◽  
Corrosion Monitoring
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