Publication detail

Reduction of CO2 Emissions in Steelmaking by Means of Utilization of Steel Plant Waste Heat to Stabilize Seasonal Cooling Water Temperature

MAUDER, T. BŘEZINA, M.

Original Title

Reduction of CO2 Emissions in Steelmaking by Means of Utilization of Steel Plant Waste Heat to Stabilize Seasonal Cooling Water Temperature

Type

journal article in Web of Science

Language

English

Original Abstract

Production of overall CO2 emissions has exhibited a significant reduction in almost every industry in the last decades. The steelmaking industry is still one of the most significant producers of CO2 emissions worldwide. The processes and facilities used at steel plants, such as the blast furnace and the electric arc furnace, generate a large amount of waste heat, which can be recovered and meaningfully used. Another way to reduce CO2 emissions is to reduce the number of low-quality steel products which, due to poor final quality, need to be scrapped. Steel product quality is strongly dependent on the continuous casting process where the molten steel is converted into solid semifinished products such as slabs, blooms, or billets. It was observed that the crack formation can be affected by the water cooling temperature used for spray cooling which varies during the year. Therefore, a proper determination of the cooling water temperature can prevent the occurrence of steel defects. The main idea is based on the utilization of the waste heat inside the steel plant for preheating the cooling water used for spray cooling in the Continuous Casting (CC) process in terms of water temperature stabilization. This approach can improve the quality of steel and contribute to the reduction of greenhouse gas emissions. The results show that, in the case of billet casting, a reduction in the cooling water consumption can be also reached. The presented tools for achieving these goals are based on laboratory experiments and on advanced numerical simulations of the casting process.

Keywords

steelmaking process; quality improvement; waste heat utilization; numerical simulations; optimal control

Authors

MAUDER, T.; BŘEZINA, M.

Released

25. 5. 2021

Publisher

MDPI

ISBN

2071-1050

Periodical

Sustainability

Year of study

13

Number

11

State

Swiss Confederation

Pages from

1

Pages to

12

Pages count

12

URL

https://www.mdpi.com/2071-1050/13/11/5957

Full text in the Digital Library

http://hdl.handle.net/11012/200420

BibTex

@article{BUT171630,
  author="Tomáš {Mauder} and Michal {Březina}",
  title="Reduction of CO2 Emissions in Steelmaking by Means of Utilization of Steel Plant Waste Heat to Stabilize Seasonal Cooling Water Temperature",
  journal="Sustainability",
  year="2021",
  volume="13",
  number="11",
  pages="1--12",
  doi="10.3390/su13115957",
  issn="2071-1050",
  url="https://www.mdpi.com/2071-1050/13/11/5957"
}