Feeding of Thermoelectric Power Plants with Biomass
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The traditional thermoelectric power plants are facilities that generate electricity from burning coal, fuel oil or natural gas in a boiler designed for this specific purpose. That boiler is heated and water inside it turns into steam, which drives turbines which in turn move the generators.
The main benefit of using thermoelectric power plants is that it can be installed anywhere, do not depend on rivers with special characteristics such as hydroelectric and also reduce the need for long distribution lines that besides the required investment, increase the waste of electricity.
Currently there is a growing number of power plants that are burning biomass instead of traditional fuels to generate electricity, which brings many benefits such as the production of "clean" energy because biomass is a carbon neutral fuel as it is extracted from nature (that absorbed carbon to form this same biomass).
The use of biomass as fuel in thermoelectric power plants also brings other advantages. An entire industry of biomass supply is created in the vicinity of the plant, usually giving opportunities to producers of forestry biomass and even companies in the area of wood recycling.
The supply of biomass thermoelectric power plants requires the installation of various equipment attached to the plant. The demand for biomass to burn is large, and the supply should be continuous during plant operation. How usually biomass used are wood chips, we can mention some of these devices:
- Wood Chippers: turn the wood logs - unsuitable for controlled burning in boilers of the plant - in wood chips, which are fed automatically producing uniform burning and temperature.
- Log Splitters: used to reduce the size of the wood to be crushed by wood chippers when it exceeds the aperture diameter of the wood chippers. The log splitters are low-cost equipment, which facilitates the handling of large diameter logs and improves the performance of the system feeding.
- Disk Classifiers: provide uniformity of wood chips, separating the pieces of inadequate size for automated burning. In this way blockages are avoided in the feeding equipment of boilers.
- Conveyor Belt: essential equipment in the project, leading to biomass from one stage to another in the system with agility. In the case of outside usage, the conveyor must have metal roof in order to minimize the contact of biomass with moisture.
- Bucket elevator: make the lifting of biomass from the level of reception and processing up to the level of silo feeding. Also can be constructed according to the needs, depending on the height of the feed opening of the silo.
- Hoppers and lung silos: are temporary storage units that receive biomass coming from diverse sources and provide their feeding to other devices in a controlled way through screw extractors.
- Sweep Screw Auger: responsible for the extraction of biomass from horizontal silos, are devices that sweep the bottom of the stacks of biomass inside the silos with movements of rotation and translation in order to provide uniform biomass supply for the system.
Lippel manufactures horizontal and vertical silos, and all necessary equipment for the feeding and extraction of biomass from silos.