Process integration. Tests and application of different tools on an integrated steelmaking site

Grip, Carl-Erik; Larsson, Mikael; Harvey, Simon; Nilsson, Larsgunnar

doi:10.1016/j.applthermaleng.2012.03.040

Cited by 19 publications

(8 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, constructing a detailed model of the whole blast furnace is very challenging, considering the numerous physical and chemical phenomena. Another type of model is suggested in works such as Suopajärvi and Fabritius [25], Grip et al [26], or Sakamoto et al [7] with the purpose to simulate an integrated steel plant. It is important to evaluate the effects of biofuels on the whole plant, though the most critical considerations for steel company is to ensure that the blast furnace can continue running uninterrupted and maintaining the same performance.…”

Section: Introductionmentioning

confidence: 99%

Biomass as blast furnace injectant – Considering availability, pretreatment and deployment in the Swedish steel industry

Wang¹,

Mellin

Lövgren³

et al. 2015

Energy Conversion and Management

Self Cite

138

View full text Add to dashboard Cite

a b s t r a c tWe have investigated and modeled the injection of biomass into blast furnaces (BF), in place of pulverized coal (PC) from fossil sources. This is the easiest way to reduce CO 2 emissions, beyond efficiencyimprovements. The considered biomass is either pelletized, torrefied or pyrolyzed. It gives us three cases where we have calculated the maximum replacement ratio for each. It was found that charcoal from pyrolysis can fully replace PC, while torrefied material and pelletized wood can replace 22.8% and 20.0% respectively, by weight.Our energy and mass balance model (MASMOD), with metallurgical sub-models for each zone, further indicates that (1) more Blast Furnace Gas (BFG) will be generated resulting in reduced fuel consumption in an integrated plant, (2) lower need of limestone can be expected, (3) lower amount of generated slag as well, and (4) reduced fuel consumption for heating the hot blast is anticipated. Overall, substantial energy savings are possible, which is one of the main findings in this paper.Due to the high usage of PC in Sweden, large amounts of biomass is required if full substitution by charcoal is pursued (6.19 TWh/y). But according to our study, it is likely available in the long term for the blast furnace designated M3 (located in Luleå).Finally, over a year with almost fully used production capacity (2008 used as reference), a 28.1% reduction in on-site emissions is possible by using charcoal. Torrefied material and wood pellets can reduce the emissions by 6.4% and 5.7% respectively. The complete replacement of PC in BF M3 can reduce 17.3% of the total emissions from the Swedish steel industry.

show abstract

Section: Introductionmentioning

confidence: 99%

Biomass as blast furnace injectant – Considering availability, pretreatment and deployment in the Swedish steel industry

Wang¹,

Mellin

Lövgren³

et al. 2015

Energy Conversion and Management

Self Cite

138

View full text Add to dashboard Cite

show abstract

“…While high silicone content in the BF burden seems optimal when analyzing only the BF, it turns out that allowing for higher specific coke consumption increases the scrap‐melting capacity and, therefore, decreases overall CO 2 emissions. Grip et al investigated the benefits of mathematical programming in this context compared to other applicable analysis methods, namely, pinch‐point analysis for energy integration and exergy analysis for efficiency improvement identification. Mathematical programming was found to be most suitable for the integrated systemic optimization of integrated iron‐ and steelmaking.…”

Section: Integrated System Optimization and Designmentioning

confidence: 99%

A Review of Mathematical Programming in Integrated Iron‐ and Steelmaking

Beek

2018

Chemie Ingenieur Technik

View full text Add to dashboard Cite

This paper presents and reviews the current application fields of mathematical programming in integrated iron‐ and steelmaking research. Three different fields of mathematical programming applications are identified and discussed: unit operation optimization, by‐product gas distribution, and integrated system optimization and design. Based on current research activities in the iron and steel industry, development trends for mathematical programming in integrated iron‐ and steelmaking research, such as the cogeneration of chemicals aided by renewable energy grid integration, are presented.

show abstract

“…The main findings are focused on the evaluation of different processes to produce iron and steel, the variation in operating conditions in the process to minimize exergy losses, including heat recovery and the use of alternative fuels to coal, and the concerns over the high emissions of CO 2 related to this industry. In addition, process integration appears an option to improve the efficiency of the total site, to overall decrease CO 2 emissions and to decrease energy and exergy inefficiencies as well as consumption of raw materials. Some examples are the integration of steel industry's CO 2 emissions with mineralization in which CO 2 is mineralized using magnesium silicates, leading to a significant amount of iron by‐product from the mineral in the form of FeOOH that can be used as a secondary raw material stream for the iron‐ and steel‐making industry and the integration of the blast furnace iron‐making system with methanol synthesis, as indicated by dotted lines in Fig.…”

Section: Exergy Analysis For Optimization Of Energy‐intensive Productmentioning

confidence: 99%

Exergy analysis of energy‐intensive production processes: advancing towards a sustainable chemical industry

Luis

Bruggen

2014

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

Exergy analysis is becoming a very powerful strategy to evaluate the real efficiency of a process. Its application in the chemical industry is still at an early stage but many interesting remarks can be obtained from the recent research in the most energy intensive processes of the chemical industry: the production of chemicals, the cement industry, the paper industry and, the iron and steel industry. The present review analyzes the opportunities and challenges in those sectors by considering exergy analyses as the first required step (although not sufficient) to advance towards a more sustainable chemical industry. Social, environmental and economic factors play a role in the critical evaluation of a process and exergy could be considered as the property that joins together those three cores of sustainability.

show abstract

Process integration. Tests and application of different tools on an integrated steelmaking site

Cited by 19 publications

References 14 publications

Biomass as blast furnace injectant – Considering availability, pretreatment and deployment in the Swedish steel industry

Biomass as blast furnace injectant – Considering availability, pretreatment and deployment in the Swedish steel industry

A Review of Mathematical Programming in Integrated Iron‐ and Steelmaking

Exergy analysis of energy‐intensive production processes: advancing towards a sustainable chemical industry

Contact Info

Product

Resources

About