Energy recovery or how to recycle our waste
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The efficient management of household and industrial waste is a major challenge for local authorities and businesses alike. Waste-to-energy plants (CVEs) offer a sustainable solution by transforming waste into energy. How can we maximize this transformation to reduce waste, produce energy and protect the environment? Let’s explore the benefits, processes and applications of energy recovery in waste treatment plants.
Tailor-made answers to your industrial challenges
EXPERTISE
For over 38 years, Servithen has been offering technical solutions tailored to each process to meet your energy recovery challenges, thanks to its expertise in thermal processes.
MULTIDISCIPLINARITY.
Thanks to engineers with a wide range of expertise, Servithen designs complete, customized solutions that comply fully with current regulations.
ADAPTABILITY.
By carefully analyzing your problems, Servithen designs the most appropriate solution, taking into account your needs and requirements.
How does energy recovery work?
Stages of waste incineration
Heat recovery and utilization
What does energy recovery involve?
Electricity generation
Waste-to-energy plants convert waste into electricity. The steam produced by heat exchangers drives turbines connected to electrical generators. This transforms waste into a clean source of energy.
Hot water production
In addition to electricity, CVEs also produce hot water for district heating. The heat recovered from combustion processes is used to heat water, which is then distributed through heating networks to supply residential and commercial buildings.
Ferrous metals recycling and bottom ash reuse
What are the advantages and disadvantages of the process?
Benefits
- Waste reduction : Reduces the volume of waste sent to landfill.
- Power generation : Generates electricity and heat from waste.
- Recycling residues : Allows metals to be recycled and bottom ash to be reused.
- Reducing emissions : Reduces greenhouse gas emissions by recycling waste.
Disadvantages
- Initial cost : High investment in plant construction and maintenance.
- Technical complexity : Requires skills specialized for operation and maintenance.
- Environmental impact : Residual emissions of dioxins and other pollutants despite flue gas treatment systems
Focus on heat exchangers in the incineration process
Heat exchanger operation
Heat exchangers are essential for heat recovery in CVEs. They transfer heat from flue gases to a heat transfer fluid without mixing the two fluids. This process maximizes energy efficiency by making use of otherwise wasted heat.
Heat exchanger types
There are several types of heat exchangers used in CVEs:
Plate heat exchangers: Efficient for heat exchange between low-viscosity fluids.
Tube exchangers: Ideal for high-temperature or high-pressure fluids.
Spiral exchangers: Used for applications requiring easy cleaning.
Positioning in the incineration process
Heat exchangers are generally located after the combustion chamber. They recover heat from flue gases to produce steam, which is then used to generate electricity or for district heating. This strategic position enables maximum recovery of thermal energy, optimizing the overall efficiency of the energy recovery process.
As you can see, waste-to-energy plants offer a sustainable solution for waste management and energy production. By incorporating advanced technologies such as heat exchangers, CVEs maximize the use of resources and contribute to a greener economy. To find out more about implementing energy recovery solutions tailored to your business, contact Servithen today and let’s turn your challenges into opportunities together.
