Since 2006 Lagan has successfully introduced a number of alternative fuels to substitute our non-renewable fossil fuels. These include:
• Meat & Bone Meal (MBM)
• Solid Recovered Fuel (SRF)
• Liquid Recovered Fuel (LRF)
The environmental benefits of utilising cement kilns to recover energy and mineral matter from renewable waste streams are now recognised worldwide as absolute best practice for the cement manufacturing industry.
• Reduces the usage of imported fossil fuels
• Significantly reduces the carbon footprint of our product
• Improves the economic and environmental sustainability of our operations
• Supports Irish jobs by sustaining employment and utilising locally derived renewable fuels.
• Reduces society’s dependence on landfill in line with EU best practice.
For further information on the supply of alternative fuels to Lagan Cement, please email our Sustainable Development Manager David Tobin.
• Provide extremely high operating temperatures (material temperatures exceed 1350 degrees C and flame temperatures reach 2000 degrees C).
• Long ‘residence’ times insure complete combustion.
• High specific thermal requirement.
• Existing thermal requirement, as cement is a societal necessity.
• Mineral matter is also recovered from the waste material being co-fuelled
o thereby replacing virgin raw materials
o avoiding any further ash disposal issues.
• Existing cement manufacture infrastructure can be utilised negating need for new incinerator-type infrastructure.
• Operate under safe, neutralising , alkaline environment due to lime-based raw materials.
Meat and Bone Meal (MBM) has been part of our ‘stable diet’ of greener fuels since 2006. MBM is delivered from the local rendering industry and arrives at the plant fully processed and prepared for feeding to the kiln system. MBM partially replaces fossil fuels like coal and gas oil. Since MBM is a renewable biomass material, it is carbon neutral and provides both thermal energy and mineral matter to the manufacturing process.
MBM is a safe non hazardous material. At Lagan a fully enclosed storage and dosing system was installed to eliminate any potential for odour nuisance as a result of utilising this fuel.
Solid Recovered Fuel (SRF) was successfully introduced at Lagan as a fuel in 2009. It is a renewable, high quality, clean burning fuel that is produced from the non-recyclable part of normal household and office waste. This waste is processed to remove recyclable or compostable materials . SRF has an energy value, typically in the region of 15 Giga Joules per tonne. It has a significant portion of biomass (up to 50%) and contributes positively to our strategy of maximising green energy in our process in preference to fossil fuel.
SRF is a safe, non-hazardous material and is stored in purpose built enclosed bays, before feeding the material to the kiln via specially designed conveying systems.
Typical constituents of SRF:
SRF co-fuelling at Lagan Cement has many important environmental benefits:
Following the successful introduction of Meat & Bone Meal and Solid Recovered Fuel, Lagan Cement are proceeding to utilise Liquid Recovered Fuel. Liquid fuel is widely used in cement manufacture across Europe and provides an excellent high calorific replacement for fossil fuels such as coal and gas oil. Liquid Recovered Fuel (LRF) is a consistent mix of materials including alcohols, such as ethanol and acetone and other liquids widely used in distillation and extractive processes.
LRF is comprised of flammable liquids and as such is treated as a hazardous material for storage and handling purposes in the same way as diesel oil is managed onsite.
Use of LRF does not require any increased emission limit values from the manufacturing process.
The main environmental benefits of LRF include: