Hydrogen production from biomass gasification in the oil refining industry – A system analysis

Energy ◽  
2012 ◽  
Vol 38 (1) ◽  
pp. 212-227 ◽  
Author(s):  
Daniella Johansson ◽  
Per-Åke Franck ◽  
Thore Berntsson
Keyword(s):  
Hydrogen Production ◽  
System Analysis ◽  
Biomass Gasification ◽  
Refining Industry ◽  
Oil Refining

scholarly journals Oil and oil products market in Ukraine

Ekonomika APK ◽  
2020 ◽  
Vol 312 (10) ◽  
pp. 29-37
Author(s):  
Oleksandr Zakharchuk ◽  
Oksana Vyshnevetska
Keyword(s):  
System Analysis ◽  
Visual Display ◽  
Petroleum Products ◽  
Oil Products ◽  
Refining Industry ◽  
Oil Refining ◽  
Practical Significance ◽  
Research Results ◽  
Destabilizing Factors ◽  
Oil And Oil Products

The purpose of the article is to study the market of oil and oil products in Ukraine, its role in the functioning of agriculture and identify ways to improve. Research methods. Methods used: system analysis and generalization (to study and generalize the energy dependence of Ukraine); statistical (to display the situation on the oil and oil products market in quantitative terms through a system of absolute and relative indicators); analysis of the series of dynamics, structural shifts (to analyze and identify trends in the indicators of the oil and oil products market); comparison (comparison of economic indicators); graphic (visual display of research results in the form of graphs). Research results. The essence and features of the Ukrainian market are revealed, a statistical analysis of trends in the development of the oil and oil products market is carried out, factors influencing the trend of the domestic market are identified and the mechanism of their interaction is clarified. The assessment of the current level of oil independence of Ukraine is carried out. Scientific novelty. The necessity of state support in terms of restoring the competitiveness of the domestic oil refining industry, diversifying the supply of petroleum products to the Ukrainian market and maintaining the share of domestically produced petroleum products at the level of 50% of the consumption volume, as well as reducing the share of other suppliers (importers) to 30% in the total balance has been substantiated. Practical significance. The analysis made it possible to identify destabilizing factors in the oil and oil products market, determine the need for systemic changes in the market functioning model and create conditions for increasing the competitiveness of domestic oil products in the Ukrainian market, create conditions for promoting and stimulating the development of the oil refining industry to weaken the reliability of imports of oil products. Tabl.: 2. Figs.: 1. Refs.: 18.

scholarly journals Hydrogen Production by Fluidized Bed Reactors: A Quantitative Perspective Using the Supervised Machine Learning Approach

J ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 266-287
Author(s):  
Zheng Lian ◽  
Yixiao Wang ◽  
Xiyue Zhang ◽  
Abubakar Yusuf ◽  
Lord Famiyeh ◽  
...  
Keyword(s):  
Machine Learning ◽  
Hydrogen Production ◽  
Fluidized Bed ◽  
Biomass Gasification ◽  
Supervised Machine Learning ◽  
Fluidized Bed Reactors ◽  
Hydrogen Yield ◽  
Carbon Conversion ◽  
Operational Parameters ◽  
Operational Conditions

The current hydrogen generation technologies, especially biomass gasification using fluidized bed reactors (FBRs), were rigorously reviewed. There are involute operational parameters in a fluidized bed gasifier that determine the anticipated outcomes for hydrogen production purposes. However, limited reviews are present that link these parametric conditions with the corresponding performances based on experimental data collection. Using the constructed artificial neural networks (ANNs) as the supervised machine learning algorithm for data training, the operational parameters from 52 literature reports were utilized to perform both the qualitative and quantitative assessments of the performance, such as the hydrogen yield (HY), hydrogen content (HC) and carbon conversion efficiency (CCE). Seven types of operational parameters, including the steam-to-biomass ratio (SBR), equivalent ratio (ER), temperature, particle size of the feedstock, residence time, lower heating value (LHV) and carbon content (CC), were closely investigated. Six binary parameters have been identified to be statistically significant to the performance parameters (hydrogen yield (HY)), hydrogen content (HC) and carbon conversion efficiency (CCE)) by analysis of variance (ANOVA). The optimal operational conditions derived from the machine leaning were recommended according to the needs of the outcomes. This review may provide helpful insights for researchers to comprehensively consider the operational conditions in order to achieve high hydrogen production using fluidized bed reactors during biomass gasification.

Assessment and Planning of the Electrical Systems in Mexican Refineries by 2014

2011 ◽  
Author(s):  
Luis Ivan Ruiz Flores ◽  
J. Hugo Rodri´guez Marti´nez ◽  
Guillermo D. Taboada ◽  
Javier Pano Jimenez
Keyword(s):  
Power Systems ◽  
Power Plants ◽  
Electrical Power ◽  
Refining Industry ◽  
Oil Refining ◽  
Electrical Power System ◽  
Electrical Power Systems ◽  
New Process ◽  
Process Plants ◽  
Petroleum Company

Nowadays the refining sector in Mexico needs to increase the quantity and quality of produced fuels by installing new process plants for gasoline and ultra low sulphur diesel. These plants require the provision of electricity and steam, among other services to function properly, which can be supplied by the power plants currently installed in each refinery through an expansion of their generation capacity. These power plants need to increase its production of electricity and steam at levels above their installed capacity, which involves the addition of new power generating equipment (gas or steam turbo-generators) as well as the raise of the electrical loads. Currently, the Mexican Petroleum Company (PEMEX) is planning to restructure their electrical and steam systems in order to optimally supply the required services for the production of high quality fuels. In this paper the present status of the original electrical power systems of the refineries is assessed and the electrical integration of new process plants in the typical schemes is analyzed. Also this paper shows the conceptual schemes proposed to restructure the electrical power system for two refineries and the strategic planning focused on implement the modifications required for the integration of new process plants that will demand about 20 MW for each refinery by 2014. The results of the analysis allowed to identify the current conditions of the electrical power systems in the oil refining industry or National Refining Industry (NRI), and thereby to offer technical solutions that could be useful to engineers facing similar projects.

scholarly journals An Empirical Test Of Politically-Motivated Income Smoothing In The Oil Refining Industry

2011 ◽  
Vol 10 (1) ◽  
pp. 92 ◽  
Author(s):  
Richard H. Fern ◽  
Betty C. Brown ◽  
Steven W. Dickey
Keyword(s):  
Empirical Test ◽  
Income Smoothing ◽  
Refining Industry ◽  
Oil Refining ◽  
The Past ◽  
Accounting Choices ◽  
Political Motivation ◽  
Reported Earnings

<span>This paper reports the results of a study of income smoothing in the oil refining industry for years 1971 through 1989. Evidence of a political motivation to practice such smoothing behavior is also reported. The methodology follows closely that of Ronen and Sadan (1981) which found strong smoothing behavior for oil firms in the 1953 to 1972 period. Two types of smoothing behavior were examined classificatory and intertemporal. Based on the analysis, oil firms were found to have a strong political motivation to manage reported earnings. There was no evidence of significant classificatory smoothing behavior by the 26 firms in the study. However, there was significant intertemporal smoothing behavior suggested, although to a less degree than that suggested by Ronen and Sadan. This reduction in smoothing behavior seems to indicate that over the past 20 years standard setters have been somewhat successful in reducing purely arbitrary accounting choices.</span>

Effects of biochemical composition on hydrogen production by biomass gasification

2017 ◽  
Vol 42 (31) ◽  
pp. 19723-19732 ◽  
Author(s):  
Tian Tian ◽  
Qinghai Li ◽  
Rong He ◽  
Zhongchao Tan ◽  
Yanguo Zhang
Keyword(s):  
Hydrogen Production ◽  
Biochemical Composition ◽  
Biomass Gasification

تقييم واقع صناعة تصفية النفط في العراق

2021 ◽  
Vol 2020 (67) ◽  
pp. 154-184
Author(s):  
دانية اياد جاسم ◽  
أ. د . فلاح خلف علي
Keyword(s):  
Crude Oil ◽  
Electrical Current ◽  
Oil Products ◽  
Refining Industry ◽  
Oil Refining ◽  
High Quality ◽  
Investment Projects ◽  
Oil Refineries ◽  
Self Sufficiency ◽  
Strong Sector

The oil refining industry in Iraq is one of the industries of strategic importance, and what these industries have been subjected to destruction, obsolescence and neglect in a way that led to the deterioration of oil products in quantity and quality, and in a manner that is not commensurate with Iraq's capabilities in the field of daily crude oil production, as well as its incompatibility with laws and standards. In addition to the inability of these industries to achieve self-sufficiency and resort to closing the gap through imports. The study assumes that rebuilding the oil refineries in Iraq on modern foundations commensurate with international environmental laws and standards, will contribute to achieving self-sufficiency in high-quality oil products and open new horizons for the refining industry. The study reached several conclusions, the most important of which are the most important reasons for the decline in the production of refineries in Iraq, failure to implement investment projects for the oil refineries sector, reliance on old methods of liquidation, obsolescence of treatment units, neglect of maintenance and maintenance operations, and continuous stops due to the interruption of electrical current, and sabotage of some pipelines that transport crude oil to the refineries. The researcher recommended that the existence of a strong sector of refineries in Iraq capable of securing energy sources and achieving self-sufficiency, in addition to its ability to compete, that achieving this goal requires working on building new and modern refineries and rehabilitating old refineries to increase production capacities and obtain high-quality oil products to Iraq can compete in the global

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