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Reconversión de una planta de biogás de un megavatio o de plantas de nueva construcción


Oferta Tecnológica
Una empresa alemana del sector de máquinas-herramientas ha desarrollado un contenedor con tecnología de digestión para una planta de biogás. La ventaja de esta tecnología es el aumento de la productividad de biogás y la posibilidad de incorporar diversos materiales en la planta mediante bioextrusión. Este contenedor modular se ha diseñado para la reconversión de una planta de biogás de un megavatio o de plantas de nueva construcción. La empresa busca socios industriales del sector agrícola para continuar con el desarrollo de la tecnología bajo un acuerdo de cooperación o comercialización con asistencia técnica.


Retrofitting of a biogas plant of a one-megawatt biogas plant or for newly constructed plants
A German company, active in the machine tools sector, has developed a container with digestion technology for a biogas plant. The advantage of the technology is the increasing in biogas productivity and the possibility to insert diverse materials into the biogas plant via bioextrusion. The company seeks industrial partners from the agricultural sector for further development of the technology under a technical cooperation agreement or for a commercial agreement with technical assistance.
The German company, active in the machine tool sector, has long-term experience in environmental engineering. Under the slogan "Together we can expand your existing biogas plant or design a new one", the company is open for international cooperation.
The modular designed container for the retrofitting of a one-megawatt-biogas-plant is a further development of the company. It can also be provided for newly constructed plants. The advantage of this technology is the increase in biogas productivity and the possibility of inserting diverse materials into the biogas plant via bio extrusion. Bio extrude of variable size can be embedded in the isolated container. A conveyor belt with detector does the feeding of the extruder. All metals are inductively discharged over a bypass. It is possible to integrate a tapper unit. In the process, the material is conveyed over a drop shaft into the extruder. The defiltrated material is ejected on the front site of the container via a stainless steel tube. From here, it falls selectively onto conveyor belt, worm gear or pump which leads the material into the fermenter. A crane is located inside of the container, for the purpose of maintenance work. All plant components are driven by the centralised control system.

Process of bioextrusion:
The developed process named bioextrusion occurs through hydrothermal (thermo-mechanical) pulping. The procedure has proven to be very efficient in the substantial and energetic usage of fibre plants. The substrate undergoes a comminution and is reduced into smaller pieces during the process. Pressure and
high temperature, as a result of an alternating load and multiple pressure/stress relive cycle inside of the twin-screw extruder, lead to the comminution of the substrate up to the point where the cell structure is homogenised. The biogas yield increases due to the better biochemical-availability and a highly enlarged surface area. This leads to the development of new bacteria stains and to an improved C/N-ratio, because the cellulose and hemicelluloses is opened and released from the embedding lignin coat. The 5- and 6-times sugar is made quicker available. Low molecular and fast transforming substances develop, for example alcohol and other compounds.

Improved mechanical characteristic:
- adequate for substances which are difficult to apply in biogas plants, like solid manure, landscaping appliances, maize straw,
grass, whole plants, bio-waste
- no floating layers
- good transportability and passing potential in pipes and valves
- low stirring energy due to the extruding substrates ability to intermediate ply
- high homogeneity of the substance (extruder is an intensive mixer)
- high dry mass contents insert through solid path

Enhancement of biochemical decomposition:
- development of new bacterial strains depending on the "nutrient environment" by the boundary layer mechanic
- faster reaction rate for the decomposition process of the biomass through an enlarged surface area and optimal reaction and environmental conditions
- reduction of retention time by an improved degree of digestion volume reduction of digestion chamber
- improved gas production rate of the organic dry matter content
- enhanced volumetric loading with improved C/Nratio

The company seeks industrial partners from the agriculture sector, using biogas plants for further development of the technology under a technical cooperation agreement or for a commercial agreement with technical assistance.

Advantages and Innovations:
Agronomic advantages:
- increment through the usage of hybrid ray instead of maize silage (both extruded)
- monoculture of maize as bioenergy crop is replaced by a liberal crop rotation
- logistical efforts: high dry mass content, fewer water transports
and thereby less volume to be transported, less humidity inside the plant and accordingly to be sprayed on the fields
- reduction of silo space and digestion tanks
- fields are quicker available
- the land value improves due to a liberal crop rotation
Stage of Development:
Already on the market
Secret Know-how

Partner sought

Type and Role of Partner Sought:
The company is looking for partners from the industry.
Specific area of activity could be agriculture, user of biogas plants and recycler of organic waste.
The partner´s role should be testing the new equipment with technology or improving of an existing biogas plant and/or further development.


Type and Size of Client:
Industry SME 50-249
Already Engaged in Trans-National Cooperation:
Languages Spoken:


Technology Keywords:
04005012 Conversión de residuos en energía
07001001 Maquinaria agrícola / tecnología
10002007 Tecnología / ingeniería medioambiental