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Decarbonization of brick production by multiple implementation of thermochemical biomass conversion; product gas for kiln power and green carbon as pore-forming energetic additive.
About
The basic principle of the innovation is to reduce direct CO2 emissions in brick production by using biogenic residual material in the sense of the circular economy. Products from the thermochemical conversion of these renewable raw materials are used in a variety of ways and at different points in the process. By means of pyrolysis, the following products are provided: - gaseous (or condensable) hydrocarbons, which are used to provide process heat - especially for heating the tube furnaces, and - renewable biochar, which can be used as a substitute for petroleum coke as a pore-forming and furthermore energy-rich additive for bricks. In addition, a corresponding optimization of the gas quality should enable retrofitting of existing process technology with renewable energy sources in order to keep the investment costs for process adaptation as low as possible.
Key Benefits
- Price reduction by using residual materials instead of fossil raw materials with very volatile price development. - Improvement of the CO2 balance through the use of renewable energy sources. - Price stability and reduced logistics costs through the use of decentrally available – possibly also regionally produced – raw materials and residual materials.
Applications
- provision of renewable energy for high temperature process heat - valorisation of residues and carbon upcycling - application as renewable carbon source for processes (bioreducer for steel industry, porosity for brick making,...)