Biomass handlingWe collaborate in renewable energy projects of developing new and modernising already existing biomass conveyor and dosage systems to combustion chamber of boiler (firing biomass only or biomass plus traditional fuel). Biomass is the oldest and most commonly used renewable energy source nowadays. The group includes household wastes and for example remains after cutting greenery. Biomass consists of the whole organic materials, all plant or animal wastes provided that they are biodegradable. Biomass includes wastes from farming, forestry, and industrial and communal wastes. Biomass is the world's third natural energy resource as far as size is concerned. Biomass conveying systems We design and built mechanical conveyor systems (vertical and horizontal) for forest and farm biomass in form of wood chips, pellets, briquettes and others, that form process lines starting from storage area to fuel feeding and finally to combustion chamber. Devices used for biomass conveyor may operate in overpressure or no-pressure environments and they comply with requirements for devices operating in explosive zone acc. to ATEX. CO2 limits, which make energy production more expensive, has been the most popular slogan in the energy sector over past years. The European Union recommends biomass co-firing. Biomass is an organic product of photosynthesis. When firied, it does not produce so much sulphur dioxide as coal produces, and carbon dioxide balance equals zero - when biomass is fired, the amount of CO2 produced equals the amount that had been used by the fired plants during photosynthesis. Biomass commonly used as fuel for boiles includes mainly wood and wood wastes, and straw, pellets and special energy crops. Systems for moving biomass to boilers from their storages (and ash-removal systems) are adjusted to each individual client from the idea stage, biomass transportation system design, manufacturing, assembly and start-up. Various types of biomass have different characteristics. For energy purposes the following biomass is used: wood, wood processing wastes, energy crops, farm products and organic wastes from farming, some municipal and industrial wastes. The drier and more dense the biomass is, the higher its quality as a fuel. For example briquette, which is produced from grinded wood wastes, is a valuable fuel. Enriched fuels like pellets oir briquette, is obtained in drying, grinding and pressing biomass. Costs of heating with the use of this fuel are currently lower in comparison with heating oil. Biomass may be in several states of aggregation. Until now we discussed solid biomass, but lets now focus on its gassy and liquid form. Nearby sewage treatment plants and at landfills, where organic wastes decompose, biogas, i.e. mixture of methane and carbon dioxide is is formed. It is sometimes referred to as methane and it is formed during anaerobic digestion of organic substances. We may use the gas for various purposes, e.g. to generate: • power in ignition engines or turbines, • heat in customised boilers, • power and heat in combined heat and power generation units. It is important that when using methane, which is a green house gas, we avoid its release to the atmosphere. The less GHG in the atmosphere is, the weaker the green house effect and less negative climate consequences related to global warming.
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