CO2 Emission of CO2 Injection into Blast Furnace

2022 ◽  
Author(s):  
Juanjuan Jiang ◽  
Kai Dong ◽  
Rong Zhu ◽  
Runzao Liu
Keyword(s):  
Blast Furnace ◽  
Co2 Emission ◽  
Co2 Injection

Effect of CO2 Injection Into Blast Furnace Tuyeres on Smelting Parameters

2021 ◽  
Author(s):  
Juanjuan Jiang ◽  
◽  
Rong Zhu ◽  
Shengtao Qiu ◽  
◽  
...  
Keyword(s):  
Blast Furnace ◽  
Co2 Injection

CO2 injection improves the high-temperature performances of Cr-bearing vanadia-titania magnetite smelting in blast furnace

2021 ◽  
Vol 43 ◽  
pp. 101363
Author(s):  
Hanlin Song ◽  
Jinpeng Zhang ◽  
Gongjin Cheng ◽  
Songtao Yang ◽  
Xiangxin Xue
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Co2 Injection

scholarly journals Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion

2021 ◽  
Vol 40 (1) ◽  
pp. 131-140
Author(s):  
Juanjuan Jiang ◽  
Rong Zhu ◽  
Shengtao Qiu
Keyword(s):  
Blast Furnace ◽  
Coal Combustion ◽  
Early Stage ◽  
Three Dimensional ◽  
Metallurgical Industry ◽  
Pulverized Coal ◽  
Co2 Injection ◽  
Endothermic Effect ◽  
Outlet Temperature ◽  
Pulverized Coal Combustion

Abstract CO2 injection into blast furnace tuyeres is a new technology to utilize CO2, aiming at expanding the way of CO2 self-absorption in the metallurgical industry. The decisive factor of whether CO2 can be mixed into a blast-furnace hot blast and the proper mixing ratio is the effect of CO2 injection on pulverized coal burnout. To investigate the effect of CO2 injection into tuyeres on pulverized coal burnout, a three-dimensional mathematical model of pulverized coal flow and combustion in the lower part of the pulverized coal injection lance-blowpipe-tuyere-raceway was established, and the effect of CO2 injection into tuyeres on pulverized coal combustion rate and outlet temperature is analyzed. The numerical simulation results show that the delay of pulverized coal combustion in the early stage is caused by the endothermic effect of the reaction of CO2 with carbon, and the burnout of pulverized coal is increased in the later stage due to the oxidation of CO2.

Blast Furnace Operating Conditions Manipulation for Reducing Coke Consumption and CO2 Emission

2012 ◽  
Vol 83 (7) ◽  
pp. 686-694 ◽  
Author(s):  
Mohamed Bahgat ◽  
Khaled S. Abdel Halim ◽  
Heba Ali El-Kelesh ◽  
Mahmoud I. Nasr
Keyword(s):  
Blast Furnace ◽  
Co2 Emission ◽  
Coke Consumption ◽  
Operating Conditions

scholarly journals Modern blast furnace ironmaking technology: potentials to meet the demand of high hot metal production and lower energy consumption

10.30544/414 ◽  
2019 ◽  
Vol 25 (2) ◽  
pp. 69-104 ◽  
Author(s):  
Elsayed Mousa
Keyword(s):  
Blast Furnace ◽  
Energy Consumption ◽  
Research And Development ◽  
Co2 Emission ◽  
Waste Heat ◽  
Technological Development ◽  
Measuring System ◽  
Injection System ◽  
Operation Conditions ◽  
Industrial Sectors

Iron and steel making is one of the most intense energy consuming in the industrial sectors. The intensive utilization of fossil carbon in the ironmaking blast furnace (BF) is related directly to CO2 emission and global warming. Lowering the energy consumption and CO2 emission from BF comes on the top priorities from both economic and environmental aspects. The BF has undergone tremendous modifications and development to increase production and improve the overall efficiency. Both technological development and scientific research drive one another to reach optimum operation conditions, which are very close to the ideal conditions; however, further development is still required to meet the stringent environmental regulations. The present article provides a comprehensive review of recent research and development which were carried out in modern blast furnace to increase the productivity meanwhile reduce the energy consumption and CO2 emission to meet the demand of steel market and the environmental protection. The recent technological and metallurgical improvements in the BF are intensively discussed including: (i) modifications of BF design, top charging and measuring system, (ii) upgrading of conventional top charging burden and alternative agglomerates, (iii) developing of tuyeres injection system and injected materials, and (iv) potentials of waste heat recovery and usage. These topics are reviewed and discussed in some details to elucidate the potential of recent progress in BF technology in saving the energy consumption and lowering CO2 emission. In this paper, the major research and development which have been carried out in ironmaking BF technology are reviewed with an overview of the future prospects.

Comparison of CO2 emission between COREX and blast furnace iron-making system

2009 ◽  
Vol 21 ◽  
pp. S116-S120 ◽  
Author(s):  
Changqing HU ◽  
Xiaowei HAN ◽  
Zhihong LI ◽  
Chunxia ZHANG
Keyword(s):  
Blast Furnace ◽  
Co2 Emission

scholarly journals Reduced Carbon Consumption and CO2 Emission at the Blast Furnace by Use of Briquettes Containing Torrefied Sawdust

2019 ◽  
Vol 5 (3) ◽  
pp. 391-401 ◽  
Author(s):  
Elsayed Mousa ◽  
Maria Lundgren ◽  
Lena Sundqvist Ökvist ◽  
Lars-Erik From ◽  
Astrid Robles ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Co2 Emission ◽  
Carbon Consumption

scholarly journals New Trends in the Application of Carbon-Bearing Materials in Blast Furnace Iron-Making

Minerals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 561 ◽  
Author(s):  
Hesham Ahmed
Keyword(s):  
Blast Furnace ◽  
Co2 Emission ◽  
Coke Consumption ◽  
Steel Production ◽  
Partial Substitution ◽  
Waste Plastics ◽  
Good Opportunity ◽  
Iron And Steel ◽  
Fossil Carbon ◽  
Bearing Materials

The iron and steel industry is still dependent on fossil coking coal. About 70% of the total steel production relies directly on fossil coal and coke inputs. Therefore, steel production contributes by ~7% of the global CO2 emission. The reduction of CO2 emission has been given highest priority by the iron- and steel-making sector due to the commitment of governments to mitigate CO2 emission according to Kyoto protocol. Utilization of auxiliary carbonaceous materials in the blast furnace and other iron-making technologies is one of the most efficient options to reduce the coke consumption and, consequently, the CO2 emission. The present review gives an insight of the trends in the applications of auxiliary carbon-bearing material in iron-making processes. Partial substitution of top charged coke by nut coke, lump charcoal, or carbon composite agglomerates were found to not only decrease the dependency on virgin fossil carbon, but also improve the blast furnace performance and increase the productivity. Partial or complete substitution of pulverized coal by waste plastics or renewable carbon-bearing materials like waste plastics or biomass help in mitigating the CO2 emission due to its high H2 content compared to fossil carbon. Injecting such reactive materials results in improved combustion and reduced coke consumption. Moreover, utilization of integrated steel plant fines and gases becomes necessary to achieve profitability to steel mill operation from both economic and environmental aspects. Recycling of such results in recovering the valuable components and thereby decrease the energy consumption and the need of landfills at the steel plants as well as reduce the consumption of virgin materials and reduce CO2 emission. On the other hand, developed technologies for iron-making rather than blast furnace opens a window and provide a good opportunity to utilize auxiliary carbon-bearing materials that are difficult to utilize in conventional blast furnace iron-making.

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