scholarly journals The forecast of total technological energy intensity of ferrous metallurgy products of Ukraine according to the production schemes till 2040

2021 ◽  
Vol 2021 (2) ◽  
pp. 44-52
Author(s):  
G.O. Kuts ◽  
◽  
O.I. Teslenko ◽  
Keyword(s):  
Energy Consumption ◽  
Ferrous Metallurgy ◽  
Structural Changes ◽  
Energy Intensity ◽  
Raw Materials ◽  
Coke Oven ◽  
Energy Resources ◽  
Converter Steel ◽  
Pig Iron ◽  
Coke Oven Gas

The perspective development of ferrous metallurgy of Ukraine for the period up to 2040 is considered. This development will take place due to structural changes of production schemes and technological measures with more effective characteristics of energy resources, energy carriers, and raw materials that directly influence the energy intensity of metallurgical products. The existing energy intensity calculations techniques were advanced and the total technological energy intensity of ferrous metallurgy products was calculated. Comparison of indicators of total technological energy intensity of final products of ferrous metallurgy (rolled metal) showed that rolled products produced by the latest energy-efficient technological schemes, which are projected to be implemented by 2040, will reduce total technological energy intensity up to 20% less than similar technological schemes used since 2017. For example, the total technological energy consumption of rolled billets of oxygen-converter steel will decrease by 17.2% (in terms of physical volume in the forecasted 2040 will be 862.293 kg c.e./t compared to the base 2017 – 1042.044 kg c.e./t), scrap process steel by 8.9% (respectively 923.999 kg c.e./t and 1014.120 kg c.e./t) and electric arc steel by 20% (703.292 kg c.e./t and 878.913 kg c.e./t). Regarding coke production, the total technological energy consumption of coke is projected to decrease by 24.0%: in 2040 it will be 210.040 kg c.e./t (in the base year 2017 it is equal to 244.585 kg c.e./t), and coke oven gas by 16.0%. , 4% (respectively 33.468 kg c.e./t and 38.72 kg c.e./t). The analysis of the role of components of energy intensity of products, namely for such products as iron ore, blast furnace coke, coke oven gas, and pig iron was made. The main components are energy resources, the share of which in the energy intensity of products is from 60 to 90%, and for other products, it is a raw material, the shares of which are within the same ranges. The main component in the structure of the formation of the total technological energy consumption of rolled products is the initial energy consumption of raw materials, the value of which is in the range of 90–92%. Keywords: technological energy intensity, structural changes, technological measures, energy resources, raw materials, pig iron, steel, rolled products

scholarly journals Methodical provisions on the distribution of total technological energy resources between separate types of outputs of multi-product manufacture

2020 ◽  
Vol 2020 (4) ◽  
pp. 58-62
Author(s):  
G.O. Kuts ◽  
◽  
O.I. Teslenko ◽  
Keyword(s):  
Blast Furnace ◽  
Cast Iron ◽  
Energy Consumption ◽  
Coke Oven ◽  
Coke Production ◽  
Energy Resources ◽  
Coke Oven Gas ◽  
Furnace Production ◽  
Blast Furnace Production ◽  
Product Manufacture

The question of methodical approach to the distribution of total technological energy consumption between separate kinds of outputs of multi-product manufacture is considered. Such ferrous metallurgy industries include blast furnace process, oxygen, energy, and coke production. The theoretical basis of proposed methodological provisions is Hess's law on thermochemical reactions and its consequences. For manufactures where the products correspond to the types of energy resources and have calorific value, the distribution of energy consumption is carried out according to the weighty volumes of types of products and their heat of combustion (for example, coke production). For industries that have multi-product manufacture of non-combustible products, the distribution of energy consumption between products is based on the weighty volumes of products and their heat capacity (for example, blast furnace iron production). In accordance with the proposed methodological provisions, we present calculation formulas for determining the distribution of total technological energy consumption for separate types of coke and blast furnace production. The results calculations of energy consumption are presented separately for coke, coke-oven gas, and chemical products of coke manufacture as well as for cast iron and furnace slag for blast furnace production. Calculations show a significant reduction of the energy consumption of coke, with regard for the distribution of energy consumption for individual outputs of coke production (by 27.2%) and pig iron in blast furnace production (a decrease in 31.8%.). The proposed methodological provisions for the distribution of total technological energy consumption between separate types of outputs of multi-product industries can be used in such manufactures of oil refining and chemical industry, in the processing industry, in particular, in the production of dairy products, etc. Keywords: energy consumption, multi-product manufacture, coke, coke-oven gas, cast iron, slag, heat of combustion

scholarly journals Increasing the energy efficiency of the city-forming organizations of ferrous metallurgy

2021 ◽  
Vol 284 ◽  
pp. 01006
Author(s):  
Kymbat Kunanbaeva ◽  
Shakizada Niyazbekova ◽  
Symbat Olzheken ◽  
Sergey Ryabichenko
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Ferrous Metallurgy ◽  
Energy Intensity ◽  
High Energy ◽  
Energy Resources ◽  
Social Significance ◽  
High Concentration ◽  
The City

The issues of increasing the energy efficiency of the city-forming organizations of ferrous metallurgy are considered in this paper. Ferrous metallurgy is characterized by a high concentration of city-forming organizations, high social significance, and high energy intensity. The paper studies the issues of energy consumption of the city-forming organizations of ferrous metallurgy, highlights the directions for increasing the efficiency of the use of energy resources.

A thermodynamic performance analysis on influence parameters of COG-CCHP based on exergy

2018 ◽  
Vol 15 (6) ◽  
pp. 771-785
Author(s):  
Hongbin Zhao ◽  
Yu Cao ◽  
Chang Liu ◽  
Xiang Qi
Keyword(s):  
Energy Consumption ◽  
Energy Loss ◽  
Volume Fraction ◽  
Coke Oven ◽  
Integrated System ◽  
Operating Conditions ◽  
Weak Links ◽  
Coke Oven Gas ◽  
Content Type ◽  
Temperature And Pressure

PurposeThe purpose of this paper is to investigate the performance of coke oven gas (COG)-combined cooling, heating and power (CCHP) system and to mainly focus on studying the influence of the environmental conditions, operating conditions and gas conditions on the performance of the system and on quantifying the distribution of useful energy loss and the saving potential of the integrated system changing with different parameters.Design/methodology/approachThe working process of COG-CCHP was simulated through the establishment of system flow and thermal analysis mathematical model. Using exergy analysis method, the COG-CCHP system’s energy consumption status and the performance changing rules were analyzed.FindingsThe results showed that the combustion chamber has the largest exergy loss among the thermal equipments. Reducing the environmental temperature and pressure can improve the entire system’s reasonable degree of energy. Higher temperature and pressure improved the system’s perfection degree of energy use. Relatively high level of hydrogen and low content of water in COG and an optimal range of CH4volume fraction between 35 per cent and 46 per cent are required to ensure high exergy efficiency of this integration system.Originality/valueThis paper proposed a CCHP system with the utilization of coke oven gas (COG) and quantified the distribution of useful energy loss and the saving potential of the integrated system under different environmental, operating and gas conditions. The weak links of energy consumption within the system were analyzed, and the characteristics of COG in this way of using were illustrated. This study can provide certain guiding basis for further research and development of the CCHP system performance.

Efficiency of industrial enterprises energy services taking into account the environmental factor

2021 ◽  
pp. 64-72
Author(s):  
G. Myroshnychenko ◽  
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Greenhouse Gas ◽  
Environmental Factor ◽  
Energy Intensity ◽  
Machine Building ◽  
Industrial Enterprise ◽  
Energy Resources ◽  
Energy Services ◽  
The Impact

Objective: to investigate the problem of environmentally friendly efficiency of energy services of an industrial enterprise in the management system of economic processes, which would be based on the assessment of financial, economic, social and environmental effects on the final activity of the industrial enterprise. Method. The following methods were used in the process of research: analysis and synthesis, logic, theoretical generalization, comparison, causation. Results. The article examines the environmental acceptability of energy production and energy consumption, which is the main component of energy security. The efficiency of energy consumption in Ukraine is analyzed. The total greenhouse gas emissions in the energy sector have been studied. It is determined that the total greenhouse gas emissions are divided into four key areas: energy generation; extraction and processing of energy resources; transport; for consumption. It is determined that the only relatively universal and comparable for international and regional comparisons indicator of energy efficiency and environmentally oriented economy is the indicator of energy intensity of GDP, taking into account purchasing power parity (PPS). The problem of efficient ecologically oriented use of energy resources for industry is substantiated. The dynamics of energy consumption of machine-building enterprises of Ukraine and their energy intensity are analyzed. It is determined that machine-building enterprises have a significant resource of energy saving, and hence a significant resource of reducing the negative impact on the environment, the implementation of which is possible primarily due to structural changes and does not require significant financial resources. It is substantiated that the service of the chief power engineer is engaged in development and implementation of measures on energy saving, energy saving and environmental protection at the enterprises. Based on the specifics of the functioning of the energy sector, a chain of influence of the efficiency of energy services on the efficiency of the industrial enterprise is formed. The peculiarity of the proposed chain is the real requirements for taking into account the impact of energy on the functioning of the enterprise as a whole and on the external environment in both forward and reverse directions. Scientific novelty. The proposed chain of influence of efficiency of energy services on efficiency of the industrial enterprise allows to position efficiency of energy economy of the industrial enterprise in the general system of formation of efficiency of the enterprise and to specify its components through financial and economic, social and ecological effect. Practical significance. The study proved the need to clarify by taking into account the impact of the energy service in the form of emissions, discharges and wastes, which allows you to manage the efficiency of the enterprise as a whole taking into account the efficiency triad (environmental, social, economic component). as a strategic priority for the development of Ukraine. Key words: environmental factor, energy resources, energy intensity, environmental safety, energy saving.

Study on the Preparation of Higher Alcohols Using Blast Furnace Gas and Coke Oven Gas

2013 ◽  
Vol 634-638 ◽  
pp. 842-845 ◽  
Author(s):  
Wei Guo ◽  
Jian Jun Wang ◽  
Wen Gui Gao ◽  
Hua Wang
Keyword(s):  
Blast Furnace ◽  
Emission Reduction ◽  
Raw Materials ◽  
Economic Value ◽  
Coke Oven ◽  
Higher Alcohols ◽  
Coke Oven Gas ◽  
Blast Furnace Gas ◽  
Reduction Effect ◽  
Technological Route

This paper elaborated the technological route of preparing higher alcohols using blast furnace gas (BFG) and coke oven gas (COG) as raw materials. An example was set up a model of environmental and economic evaluation on reutilization of gas as resource．This paper evaluates and analyses as well the efficiency of emission reduction and its economy in terms of reutilization of BFG. The result shows that preparation of higher alcohols using BFG can not only achieve good carbon emission reduction effect, but also get a good economic value.

scholarly journals DYNAMIC CHARACTERISTICS OF THE PROCESS OF GRINDING GRAPE RAW MATERIALS AND THEIR IMPACT ON THE ENERGY INTENSITY AND PERFORMANCE OF THE GRINDER

2019 ◽  
Vol 54 (4) ◽  
pp. 130-134
Author(s):  
V.V. Novikov ◽  
◽  
E.V. Litvinov ◽  
N.V. Morozov ◽  
E.A. Borisov ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Dynamic Characteristic ◽  
Dynamic Characteristics ◽  
Fruits And Vegetables ◽  
Energy Intensity ◽  
Raw Materials ◽  
Starting Material ◽  
Analytical Expression ◽  
Different Types ◽  
And Performance

The purpose of the study is to establish an analytical expression describing the energy consumption during juicing depending on the shape of the knife – divider. The article presents a design for juicing different types of fruits and vegetables. The dynamic characteristic of the process of grinding the starting material (for example, grapes) is given. An expression for determining the power spent on grinding the starting material is analytically substantiated and presented.

scholarly journals Statistical Assessment of Energy Efficiency of Production and Consumption of Energy Resources in Ukraine

2017 ◽  
pp. 42-52
Author(s):  
A. Yu. Deina
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Natural Gas ◽  
Energy Intensity ◽  
Energy Resources ◽  
Energy Services ◽  
Low Level ◽  
Production And Consumption ◽  
Energy Independence ◽  
High Level

Energy independence of the country - one of the key links of the economy policy of many countries, including Ukraine, which full high-quality functioning of economy depends on. Full functioning of all economic institutes is possible only at reliable providing of fuel and energy resources. Economy life in general fades without skillful and rational use of energy resources. One of the main objectives of sustained economic growth and ensuring energy independence is connected with need of achievement of high, competitive level of efficiency of use of fuel and energy resources. Complex assessment of efficiency of production and consumption of energy resources provides use of a set of the indicators characterizing versatility and complexity of energy efficiency category. The method of multidimensional average has been used for calculation of complex assessment of energy efficiency, at the same time the following indicators have been chosen: energy intensity of GDP, export and import of energy resources, production and consumption of energy resources, investments into the energy complex, oil prices, tariffs for natural gas and the electricity for the population, a share of natural gas in the structure of energy consumption and so on. Complex assessment of efficiency of production and consumption of energy resources is executed on two blocks - for producers and for consumers (population). Extremely low level of energy efficiency for both producers and consumers (population) of energy services during 2010-2016 is observed. At the same time factors which influence the low level of integrated assessment of energy efficiency of production and consumption of energy resources are revealed. Achievements of the actual levels of integrated coefficients of energy efficiency substantially depended recently on introduction of extensive factors of development. Such situation has negative effect on achievement of energy independence of Ukraine. The current state of efficiency of production and consumption of energy resources is characterized by existence of a wide range of problems. It is possible to distinguish the lack of the principles of resource-saving of producers and economical use at consumers of energy services/ It results to very high level of energy consumption, the high level of energy intensity, the need to import of fuel and energy resources from other countries because of insufficiency of own production, the low level of income of consumers and groundlessness of increase in tariffs for energy services that promotes increase in level of debt of the population for the provided services and an unprofitable financial condition of the enterprises of the energy complex.

scholarly journals EVALUATION OF ENERGY EFFICIENCY OF MACHINE-BUILDING ENTERPRISES ON THE BASIS OF THE INTEGRATED INDICATOR

2021 ◽  
Author(s):  
Yevheniia Makazan ◽  
Oleksandr Veremeenko
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Intensity ◽  
World Market ◽  
High Energy ◽  
Machine Building ◽  
Energy Resources ◽  
Resource Saving ◽  
The World ◽  
Building Enterprises

Summary. One of the main factors in ensuring the energy security of a manufacturing enterprise is to reduce the energy intensity of manufactured products. The world's leading countries have significantly reduced energy consumption in recent years. And domestic enterprises, today, remain one of the least energy efficient in the world. A significant part of energy resources is spent due to depreciation of fixed assets and obsolete equipment. Today, the economical and efficient use of energy is one of the main issues that need to be solved. After all, the lower the level of use of energy resources, the more efficient the production, and the more competitive the products on the world market. Therefore, in order to assess the level of energy efficiency, we have systematized economic indicators that characterize the use of energy resources in the enterprise. Based on them, the structure of an integrated indicator of the level of energy efficiency of a machine-building enterprise is proposed. The structure includes four groups, which in turn include from two to four indicators. The first group of indicators characterizes the energy efficiency of the enterprise, the second - innovative activities in the direction of energy efficiency, the third - investment activities, the fourth - the socio-environmental consequences of the introduction of resource-saving technologies. An algorithm for determining the level of energy efficiency of machine-building enterprises based on the principles of systems analysis, which is based on integrated assessment, is also proposed. The implementation of the proposed algorithm will determine the level of energy efficiency of the enterprise and identify possible ways to reduce energy consumption. The proposed algorithm was tested at four machine-building enterprises of the Zaporizhia region and the obtained results were substantiated. It is established that the level of energy efficiency of the studied machine-building enterprises is very low. Which indicates the irrational use of energy and, accordingly, the very high energy intensity of the products.

scholarly journals Energy Consumption Analysis for Vehicle Production through a Material Flow Approach

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2396 ◽  
Author(s):  
Fernando Enzo Kenta Sato ◽  
Toshihiko Nakata
Keyword(s):  
Energy Consumption ◽  
Automotive Industry ◽  
Material Flow ◽  
Raw Materials ◽  
Open Data ◽  
Energy Resources ◽  
Total Consumption ◽  
Energy Consumption Analysis ◽  
Vehicle Production ◽  
Vehicle Market

The aim of this study is to comprehensively evaluate the energy consumption in the automotive industry, clarifying the effect of its productive processes. For this propose, the material flow of the vehicles has been elaborated, from mining to vehicle assembly. Initially, processes where each type of material was used, and the relationship between them, were clarified. Subsequently, material flow was elaborated, while considering materials input in each process. Consequently, the consumption of energy resources (i.e., oil, natural gas, coal, and electricity) was calculated. Open data were utilized, and the effects on the Japanese vehicle market were analyzed as a case study. Our results indicate that the energy that is required for vehicle production is 41.8 MJ/kg per vehicle, where mining and material production processes represent 68% of the total consumption. Moreover, 5.23 kg of raw materials and energy resources are required to produce 1 kg of vehicle. Finally, this study proposed values of energy consumption per mass of part produced, which can be used to facilitate future material and energy analysis for the automotive industry. Those values can be adopted and modified as necessary, allowing for possible changes in future premises to be incorporated.

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