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Extension of pilot tests of cyanide elimination by ozone from blast furnace gas washing water through

Ismael Matino, Valentina Colla, Teresa A. Branca

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 718-730 doi: 10.1007/s11705-018-1771-2

Abstract:

For improving wastewater quality, one of the dare of steelworks is reducing cyanide in wastewater of gas washing treatment of blast furnaces. Costs of existing treatments, stringent environmental regulations and changeable composition of water from gas treatment, have led to study how available treatments can be modified and to examine new ones. Ozonation is one of cyanide treatments, tested within a European project. A process model was set up with Aspen Plus®, to assess operating conditions and wastewater distinctive characteristics and to demonstrate treatment robustness. Process was modeled by theoretical reactors, taking into account all more affecting reactions. A genetic algorithm was exploited to find kinetic parameters of these reactions. After validation, the model was used to analyse scenarios, by considering also real contexts. Pilot tests were extended, process knowledge was enhanced and suggestions were obtained. To promote cyanide removal with ozone, temperature and pH values were 30°C and 10, respectively. With an ozone (mg/h)/water (L/h) ratio of 100 mg/L, batch mode ensure reaching cyanide regulation limit (0.2 mg/L) after maximum 4.5 h, if initial amount was less than 20 mg/L. Higher removal was obtained than in continuous mode due to constraints related to this last run. Higher wastewater contamination needed further time and more ozone.

Keywords: blast furnace     cyanide removal     gas washing water     modeling and simulation     ozonation    

The Research of the Detecting Means for the New Model of the Gas Density in Recycled Waste Gas Furnace

Shen Yuansheng,Liu Yongjie,Wang Deyong,Li Benwen

Strategic Study of CAE 2005, Volume 7, Issue 5,   Pages 70-72

Abstract:

By analyzing the feature of the process for the recycled waste gas in furnace, let the volume of wasteflow of waste gas and the recycled times of waste gas which goes into combustion-supporting air in furnace

Keywords: tested model     combustion material     combustion ratio     recycling furnace    

An investigation of reaction furnace temperatures and sulfur recovery

S. ASADI, M. PAKIZEH, M. POURAFSHARI CHENAR

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 362-371 doi: 10.1007/s11705-011-1106-z

Abstract: In a modern day sulfur recovery unit (SRU), hydrogen sulfide (H S) is converted to elemental sulfur using a modified Claus unit. A process simulator called TSWEET has been used to consider the Claus process. The effect of the H S concentration, the H S/CO ratio, the input air flow rate, the acid gas flow of the acid gas (AG) splitter and the temperature of the acid gas feed at three different oxygen concentrations (in the air input) on the main burner temperature have been studied. Also the effects of the tail gas ratio and the catalytic bed type on the sulfur recovery were studied. The bed temperatures were optimized in order to enhance the sulfur recovery for a given acid gas feed and air input. Initially when the fraction of AG splitter flow to the main burner was increased, the temperature of the main burner increased to a maximum but then decreased sharply when the flow fraction was further increased; this was true for all three concentrations of oxygen. However, if three other parameters (the concentration of H S, the ratio H S/CO and the flow rate of air) were increased, the temperature of the main burner increased monotonically. This increase had different slopes depending on the oxygen concentration in the input air. But, by increasing the temperature of the acid gas feed, the temperature of the main burner decreased. In general, the concentration of oxygen in the input air into the Claus unit had little effect on the temperature of the main burner (This is true for all parameters). The optimal catalytic bed temperature, tail gas ratio and type of catalytic bed were also determined and these conditions are a minimum temperature of 300°C, a ratio of 2.0 and a hydrolysing Claus bed.

Keywords: Claus unit     concentration of H2S     tail gas ratio     sulfur recovery     catalytic bed    

Data-driven soft sensors in blast furnace ironmaking: a survey Review Article

Yueyang LUO, Xinmin ZHANG, Manabu KANO, Long DENG, Chunjie YANG, Zhihuan SONG

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 3,   Pages 327-354 doi: 10.1631/FITEE.2200366

Abstract: The is a highly energy-intensive, highly polluting, and extremely complex reactor in the . are a key technology for predicting molten iron quality indices reflecting energy consumption and operation stability, and play an important role in saving energy, reducing emissions, improving product quality, and producing economic benefits. With the advancement of the Internet of Things, big data, and artificial intelligence, data-driven in es have attracted increasing attention from researchers, but there has been no systematic review of the data-driven in the . This review covers the state-of-the-art studies of data-driven technologies in the . Specifically, we first conduct a comprehensive overview of various data-driven soft sensor modeling methods (multiscale methods, adaptive methods, , etc.) used in ironmaking. Second, the important applications of data-driven in ironmaking (silicon content, molten iron temperature, gas utilization rate, etc.) are classified. Finally, the potential challenges and future development trends of data-driven in ironmaking applications are discussed, including digital twin, multi-source data fusion, and carbon peaking and carbon neutrality.

Keywords: Soft sensors     Data-driven modeling     Machine learning     Deep learning     Blast furnace     Ironmaking process    

Review and prospect of the air cushion furnace technology for aluminium alloy automotive sheet pre-treatment

Li Yong,Wang Zhaodong,Ma Mingtu,Wang Guodong,Fu Tianliang and Li Jiadong

Strategic Study of CAE 2014, Volume 16, Issue 1,   Pages 14-22

Abstract: characteristics of aluminium alloy automotive sheet pre-treatment and the working principle of the air cushion furnaceThe process location and irreplaceable role of air cushion furnace in the aluminium alloy automotiveThen development process of air cushion furnace line of aluminum alloy sheet was reviewed ,summarizedBased on the research status of the air cushion furnace,the key technology of it was analysed,and researchkey points on process, equipment and control models of air cushion furnace for aluminium alloy automotive

Keywords: aluminum alloy     auto body sheet     shate products     air cushion furnace     pretreatment technology    

The Application of Temperature measurement By CCD to Modern Coking-Furnace

Jiang Yalong,Yuan Hongyong

Strategic Study of CAE 2003, Volume 5, Issue 4,   Pages 73-75

Abstract:

As is well-known that coking furnace has a very important role in the petroleum industry.This paper introduced the application of temperature measurement by CCD to modern coking furnace.

Keywords: CCD     coking     temperature measurement    

Numerical simulation of billet heating

Chen Guanjun

Strategic Study of CAE 2010, Volume 12, Issue 2,   Pages 57-61

Abstract: style="text-align: justify;">According to the case of billet heating in a regenerative type heating furnacetime is simulated and studied, the result of simulation and the heating time in the actual heating furnace

Keywords: heating furnace     billet     heating     simulation    

Upgrading Traditional Copper Industry With Advanced Technology

Kong Fanyi

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 69-76

Abstract: .), built in early 1960s, is mainly engaged in smelting of copper concentrate with electric furnace.especially the introduction of the advanced oxygen-enriched top-blown bath smelting to replace the electric furnace

Keywords: copper industry     electric furnace smelting     technical upgrading     oxygen-enriched top-blown bath smelting    

Particle formation of hydroxyapatite precursor containing two components in a spray pyrolysis process

W. Widiyastuti, Adhi Setiawan, Sugeng Winardi, Tantular Nurtono, Heru Setyawan

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 104-113 doi: 10.1007/s11705-014-1406-1

Abstract: The particle formation mechanism of hydroxyapatite precursor containing two components, Ca(OOCCH ) and (NH ) HPO with a ratio of Ca/P= 1.67, in a spray pyrolysis process has been studied by computational fluid dynamics (CFD) simulation on the transfer of heat and mass from droplets to the surrounding media. The focus included the evaporation of the solvent in the droplets, a second evaporation due to crust formation, the decomposition reaction of each component of the precursor, and a solid-state reaction that included the kinetic parameters of the precursor regarding its two components that formed the hydroxyapatite product. The rate of evaporation and the reacted fraction of the precursor both increased with temperature. The predicted average size of the hydroxyapatite particles agreed well with the experimental results. Therefore, the selected models were also suitable for predicting the average size of particles that contain two components in the precursor solution.

Keywords: droplet     hydroxyapatite particle     CFD     tubular furnace     spray pyrolysis    

Development of oxide based diffusion barrier coatings for CFC components applied in modern furnaces

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 392-396 doi: 10.1007/s11465-011-0241-z

Abstract:

Carbon fibre reinforced carbon (CFC) materials show a high potential for usage in furnaces as sample carriers for example, which is due to their excellent thermal stability compared to steel carriers. Only their tendency to react with different metals at high temperatures by C-diffusion is a disadvantage, which can be solved by application of diffusion barriers. In order to enable the utilization of CFC-carriers for e.g. brazing furnaces, within the frame of this study thermally sprayed diffusion barrier coatings were developed. Coatings of mullite and ZrO2-7%βY2O3 (YSZ) were prepared by air plasma spraying (APS). The coatings were investigated in terms of their microstructure and thermal shock behaviour. In order to prove the suitability of the coatings for the application in brazing furnaces, the wettability of the coating surfaces by a Ni-based brazing alloy was investigated. The results showed that both mullite and YSZ could be deposited on CFC substrates with a bond coat of W or SiC. Both coatings exhibited good thermal shock behaviour and an excellent non-wetting behaviour against the used Ni-based braze alloy.

Keywords: diffusion barrier coatings     carbon fibre reinforced carbon (CFC)     plasma spraying     microstructure     furnace    

Heat flux distribution on circulating fluidized bed boiler water wall

LU Junfu, YUE Guangxi, YANG Hairui, ZHANG Jiansheng, YU Long, ZHANG Man, YANG Zhongming

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 134-139 doi: 10.1007/s11708-008-0027-0

Abstract: Studies on the horizontal heat flux distribution were conducted in three CFB boilers with different furnace

Keywords: horizontal     different furnace     temperature     FEA     measurement    

Compressive strength and stability of sustainable self-consolidating concrete containing fly ash, silica fume, and GGBS

Osama Ahmed MOHAMED, Omar Fawwaz NAJM

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 406-411 doi: 10.1007/s11709-016-0350-1

Abstract: where up to 80% of Portland cement was replaced with fly ash, silica fume, or ground granulated blast furnace

Keywords: fly ash     silica fume     ground granulated blast-furnace slag     self-consolidating concrete     and sustainable    

Characteristics of the stabilized/solidified municipal solid wastes incineration fly ash and the leaching behavior of Cr and Pb

Yan SHAO,Haobo HOU,Guangxing WANG,Sha WAN,Min ZHOU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 192-200 doi: 10.1007/s11783-014-0719-0

Abstract: An alkali activated blast furnace slag-based cementitious material was used to stabilize/solidify the

Keywords: municipal solid waste incineration (MSWI) fly ash     blast furnace slag     leaching behavior     Cr     Pb    

Intelligent Ironmaking Optimization Service on a Cloud Computing Platform by Digital Twin Article

Heng Zhou, Chunjie Yang, Youxian Sun

Engineering 2021, Volume 7, Issue 9,   Pages 1274-1281 doi: 10.1016/j.eng.2021.04.022

Abstract: learning and an evolutionary algorithm is proposed to optimize several conflicting goals of the blast furnace

Keywords: Cloud factory     Blast furnace     Multi-objective optimization     Distributed computation    

Title Author Date Type Operation

Extension of pilot tests of cyanide elimination by ozone from blast furnace gas washing water through

Ismael Matino, Valentina Colla, Teresa A. Branca

Journal Article

The Research of the Detecting Means for the New Model of the Gas Density in Recycled Waste Gas Furnace

Shen Yuansheng,Liu Yongjie,Wang Deyong,Li Benwen

Journal Article

An investigation of reaction furnace temperatures and sulfur recovery

S. ASADI, M. PAKIZEH, M. POURAFSHARI CHENAR

Journal Article

Data-driven soft sensors in blast furnace ironmaking: a survey

Yueyang LUO, Xinmin ZHANG, Manabu KANO, Long DENG, Chunjie YANG, Zhihuan SONG

Journal Article

Review and prospect of the air cushion furnace technology for aluminium alloy automotive sheet pre-treatment

Li Yong,Wang Zhaodong,Ma Mingtu,Wang Guodong,Fu Tianliang and Li Jiadong

Journal Article

The Application of Temperature measurement By CCD to Modern Coking-Furnace

Jiang Yalong,Yuan Hongyong

Journal Article

Numerical simulation of billet heating

Chen Guanjun

Journal Article

Upgrading Traditional Copper Industry With Advanced Technology

Kong Fanyi

Journal Article

Particle formation of hydroxyapatite precursor containing two components in a spray pyrolysis process

W. Widiyastuti, Adhi Setiawan, Sugeng Winardi, Tantular Nurtono, Heru Setyawan

Journal Article

Development of oxide based diffusion barrier coatings for CFC components applied in modern furnaces

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Journal Article

Heat flux distribution on circulating fluidized bed boiler water wall

LU Junfu, YUE Guangxi, YANG Hairui, ZHANG Jiansheng, YU Long, ZHANG Man, YANG Zhongming

Journal Article

Compressive strength and stability of sustainable self-consolidating concrete containing fly ash, silica fume, and GGBS

Osama Ahmed MOHAMED, Omar Fawwaz NAJM

Journal Article

Characteristics of the stabilized/solidified municipal solid wastes incineration fly ash and the leaching behavior of Cr and Pb

Yan SHAO,Haobo HOU,Guangxing WANG,Sha WAN,Min ZHOU

Journal Article

Intelligent Ironmaking Optimization Service on a Cloud Computing Platform by Digital Twin

Heng Zhou, Chunjie Yang, Youxian Sun

Journal Article