scholarly journals Heat power analysis of performance indicators blast furnace No. 3 PJSC «AZOVSTAL IRON & STEEL WORKS» with natural gas and pulverized coal after oven overhaul of blast furnace

2020 ◽  
pp. 47-61
Author(s):  
A.L. Chaika ◽  
B.V. Kornilov ◽  
A.A. Moskalina ◽  
V.V Lebed ◽  
M.G. Dzhigota ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Comparative Analysis ◽  
Natural Gas ◽  
Energy Efficient ◽  
Pulverized Coal ◽  
Pig Iron ◽  
Heat Power ◽  
Technical And Economic Indicators ◽  
Steel Works

In 2019, according to the technological assignment of the Iron and Steel Institute (ISI), the reconstruction of the blast furnace (BF) No. 3 of PJSC «AZOVSTAL IRON & STEEL WORKS» was carried out for the long-term energy-efficient production of pig iron with using pulverized coal (PCI) up to 180 kg/t with a change in the profile according to the technological task of ISI. The design of the BF No. 3 profile corresponds to the best world solutions for furnaces efficiently working with pulverized coal, and the furnace was equipped with five mathematical models of ISI («Horn», «Mine», «Heat losses», «Loading», «Slag»). Specialists of ISI developed recommendations and carried out technological support for the operation of BF No.3, which made it possible to increase the removal of pig iron from the design 2.1 t/m3 to 2.27 t/m3 and achieved the best indicators in the blast furnace workshop in terms of coke and equivalent fuel consumption by increasing the productivity of the burden system, using a rational burden loading matrix, using a rational pressure drop in the furnace, which allows the maximum use of the power of the blower machine, forcing the furnace with technical oxygen and other measures. Using the heat power model of I.D. Semikin was made a comparative analysis of the best for six months indicators of thermal performance and technical and economic indicators of BF №3 of PJSC «AZOVSTAL IRON & STEEL WORKS», with a volume of 1800 m3 before (work with natural gas) and after major repairs (work with pulverized coal and with natural gas). Using the exergy method of analysis based on the results of calculating heat and power balances, a comparative analysis of changes in the energy efficiency and environmental indicators of BF No. 3 before and after its major repairs was carried out. It shown the expediency of integrated mastering of operating modes and modernization of the blast furnace for long-term and energy-efficient operation with pulverized coal. It disclosed the mechanism for improving the technical and economic indicators of work after major repairs by changing the heat and power conditions of the blast furnace. Its shown Improvement of exergy efficiency factor and environmental performance of BF No. 3 after major repairs.

scholarly journals Influence of the application of pulverized coal and natural gas in blast furnace on exergy indicators of technological system «blast furnace-oxygen converter»

2018 ◽  
pp. 107-117
Author(s):  
A.L. Chaika ◽  
A.G. Cherniatevych ◽  
A.A. Sokhatsky ◽  
A.A. Moskalina ◽  
T.S. Golub ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Natural Gas ◽  
Oxygen Converter ◽  
Steel Production ◽  
Environmental Indicators ◽  
Pulverized Coal ◽  
Technological System ◽  
Economic Indicators ◽  
Pig Iron ◽  
Technical And Economic Indicators

The aim of the work is to study the effect of pulverized coal (PCI) on the energy indicators of the technological system of steel production «blast furnace-oxygen converter». The analysis of energy use in the technological system for the best actual periods of operation of the blast furnace (BF) using only natural gas, pulverized coal and co-injection of pulverized coal with natural gas is performed. It is shown that the technology of using PCI improves technical and economic indicators and has a positive effect on the distribution of exergic flows, exergic efficiency and environmental indicators in the system «blast furnace-oxygen converter». Comparative heat and energy and exergy analysis of actual pulverized coal consumption in the amount of 135 kg/t of pig iron compared to blowing only natural gas in the amount of 35 m3/t of pig iron showed that pulverized coal leads to a decrease in coke consumption by ~ 25% due to pulverized pulverized coal. An exergetic analysis of the predicted converter heats showed that the injection of pulverized coal to the pulpwood leads to a decrease in the total exergy supplied by ~7%, and in the case of co-application of pulverized coal with natural gas, the exergy decreases by ~ 2%. Analysis of the exergy balance of converter melting showed that a change in the consumption of pulverized coal and natural gas in the blast furnace production slightly affects the change in the exergic efficiency (up to 0.4%). In general, it is shown that the technology of using PCI improves technical and economic indicators and positively affects the distribution of exergic flows, exergic efficiency and environmental indicators in the blast furnace – oxygen converter system.

Study of Co-Injection of Natural Gas and Pulverized Coal in Blast Furnace Under Pure Oxygen Environment

2008 ◽  
Author(s):  
Mingyan Gu ◽  
Jiaxin Li
Keyword(s):  
Numerical Simulation ◽  
Blast Furnace ◽  
Natural Gas ◽  
Combustion Process ◽  
Pulverized Coal ◽  
Pure Oxygen ◽  
Coke Combustion ◽  
Oxygen Gas ◽  
Combustion Processes ◽  
Developing Method

Using pure oxygen in blast furnace is a developing method in blast furnace in order to lower the emission of waste gases. Numerical simulation has been applied to analyze the combustion process of co-injection of natural gas (NG) and pulverized coal (PC) in a blast furnace while the blast is pure oxygen gas. The effect of injection NG and blast flow rate on the coal and coke combustion processes is examined. The predicted results provide a better understanding of reactions inside blast furnace.

Study of a blast-furnace smelting technology which involves the injection of pulverized-coal fuel, natural gas, and an oxygen-enriched blast into the hearth

Metallurgist ◽  
2006 ◽  
Vol 50 (5-6) ◽  
pp. 235-240 ◽  
Author(s):  
A. N. Ryzhenkov ◽  
S. L. Yaroshevskii ◽  
V. P. Zamuruev ◽  
V. E. Popov ◽  
Z. K. Afanas’eva
Keyword(s):  
Blast Furnace ◽  
Natural Gas ◽  
Pulverized Coal ◽  
Blast Furnace Smelting ◽  
Coal Fuel ◽  
Pulverized Coal Fuel ◽  
Furnace Smelting

scholarly journals ENERGY EFFICIENT EQUIPMENT FOR MODERNIZATION OF THE GAS BOILERS POWER 0.1-30 MW

2021 ◽  
pp. 27-35
Author(s):  
I.Ya. Sigal ◽  
E.M. Lavrentsov ◽  
A.V. Smikhula ◽  
O.V. Marasin ◽  
E.P. Dombrovska
Keyword(s):  
Natural Gas ◽  
Service Life ◽  
Energy Efficient ◽  
Nozzle Geometry ◽  
European Level ◽  
Heating Surfaces ◽  
New Type ◽  
Technical Possibility ◽  
Gas Burner ◽  
Technical And Economic Indicators

The possibility of modernization of boilers TVH-8M, TVH-8 and NYYSTU-5, operated in Ukraine, with the increasing of their technical and economic indicators to the modern European level is shown. Projects of modernization of boilers have been developed, which consist in redesign of heating surfaces in convective shafts of existing boilers without increasing their overall dimensions with using convective part of pipes diameter 32 x 3 mm and replacement of burner devices by developed new type MPIG-3. It is shown that the results of industrial implementations achieved efficiency of boilers type TVH-8M (TVH-8) 94-96% in the operating range of their load and obtained the calculated efficiency for boilers NYYSTU-5 92-94%. It is experimentally proven that when installing special calibrated nozzle, instead of drilled holes in the collectors of gas burners, it is possible to keep the nozzle geometry (natural gas burner consumption depending on pressure) unchanged throughout the service life. The technical possibility of combustion of biogas and mixtures of natural gas and hydrogen in the slot bottom diffusion burners of the MPIG-3 type, when replacing only the nozzle apparatus is shown. Bibl. 17, Fig. 6, Table 1.

scholarly journals Site Planning and Orientation for Energy Efficiency: A Comparative Analysis on Three Office Buildings in Kuala Lumpur to Determine a Location for Building Shading Device

2016 ◽  
Vol 700 ◽  
pp. 247-255 ◽  
Author(s):  
Nurul Akmam Naamandadin ◽  
Abdul Razak Sapian ◽  
Siti Nur Aishah Mohd Noor
Keyword(s):  
Energy Efficiency ◽  
Comparative Analysis ◽  
Energy Efficient ◽  
Early Stage ◽  
Office Building ◽  
Kuala Lumpur ◽  
Design Component ◽  
Site Planning ◽  
Shading Device

A well-designed energy efficient building provide long term building optimisation while minimising the energy. Site planning and orientation of the building plays an important factor at the early stage of any development. Especially to determine the best location for the building opening and windows and also the suitable materials to enhance comfort to the occupants and reduce the energy consumption. Thus, the aim of this study was to identify the site planning and orientation of the selected office building. The benchmark for the analysis will be based on the architectural and passive design component provided in MS 1525:2007 for the site planning and orientation through comparative analysis. Three energy efficient office building in Kuala Lumpur were selected in this research. This case study is important in helping to understand the relationship between site planning, building orientation, energy efficiency and cost effectiveness.

scholarly journals Effect of Natural Gas Injection Point on Combustion and Gasification Efficiency of Pulverized Coal under Blast Furnace Condition

2018 ◽  
Vol 104 (5) ◽  
pp. 243-252 ◽  
Author(s):  
Akinori Murao ◽  
Kiyoshi Fukada ◽  
Hidetoshi Matsuno ◽  
Michitaka Sato ◽  
Shota Akaotsu ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Natural Gas ◽  
Gas Injection ◽  
Pulverized Coal ◽  
Injection Point ◽  
Gasification Efficiency
Sign in / Sign up

Export Citation Format

Share Document