Project Description

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Decarbonization: 1450 tonnes of CO2 saved, based on an emission rate of 0.241 kg CO2/kWh consumed.

Energy savings: 6000 MWh per year

Location: Nord Pas de Calais (62) – Hauts de France – France

Customer: Thyssenkrupp

Sector: Metallurgy

Needs – customer requests:

The client wanted to find a way to reduce its natural gas consumption on its site and therefore reduce its CO2 emissions for which they are subject to the carbon tax.
The objective of this study was to hybridize the boiler producing the superheated water necessary for the customer’s process. A furnace was designed and integrated with a waste heat recovery solution to preheat the water loop on the boiler return line.

Project issues:

Analyze the waste heat available at the furnace and the boiler’s energy requirements.
As a result of this characterization, Eco-Tech Ceram sought the most relevant solutions to satisfy energy needs as much as possible.
Each of the solutions was presented to the client via a complete report respecting Ademe ‘s specifications on the feasibility studies.

Eco-Tech Ceram achievements:

  • Study of a 1.2 MW exchanger and two 350 kW exchangers
  • Sizing of flue gas ducts and control dampers
  • Supported
  • Thermal and aeraulic study of solutions
  • Solution design
  • Energy and environmental balance
  • Calculation of the solution and related works (modifications to burners, asbestos removal, etc.)
  • Economic study of the solution and financial arrangement

Description of the solution proposed by Eco-Tech Ceram:

Recovery of waste heat from the flue gases of a baking oven to preheat the water used by the process boiler via a flue gas/water heat exchanger.