Project Description

Decarbonization: 565 tonnes of CO2 saved, based on an emission rate of 0.241 kg CO2/kWhth consumed

Energy savings: 2,795 MWh per year

Location : Haute-Vienne (87) New Aquitaine

Sector : Porcelain

Needs – customer requests:

The customer wanted to find a way of reducing its consumption of natural gas on its site, and thus reducing its CO2 emissions.
The objective of this study was to reduce the consumption of their enamelling and sharpening ovens. To do this, energy recovery was studied on the fumes from these ovens in order to preheat the combustion air of these same ovens.

Project issues:

Analyze available waste heat and the energy requirements of enameling and degreasing furnaces.
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:

Each solution has been studied in such a way:

  • Study of the operation of the furnaces in relation to each other
  • Study of the thermal balance between identified deposits (2 furnaces) and needs (5 furnaces)
  • Eco-Stock® dimensions: steady-state thermal capacity of 2.5 MWh
  • In-depth study of combustion air preheating and air flow management: change of burner technology.
  • Study of the management of the reducing phases of the enameling furnace: proposed oxidation boxes
  • Solution design
  • Energy and environmental balance
  • Calculation of the solution and the modifications made to the ovens
  • Economic study of the solution and financial arrangement

Description of the solution proposed by Eco-Tech Ceram:

Eco-Tech Ceram proposes to recover the waste heat at the level of the fumes of enameling and smart kilns, to recover this energy through a high temperature storage solution, Eco-Stock® in order to preheat the combustion air of these same ovens.