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Tecnología de digestión para plantas de biogás


Oferta Tecnológica
Una empresa alemana especializada en máquinas-herramientas con amplia experiencia en ingeniería ambiental ha desarrollado un contenedor de diseño modular para modernizar plantas de biogás. La ventaja de esta tecnología es el incremento de la productividad de biogás y la posibilidad de insertar diversos materiales en la planta mediante bioextrusión. Todos los componentes de la planta son dirigidos por un sistema de control centralizado. La empresa busca socios industriales interesados en continuar con el desarrollo y establecer acuerdos de cooperación y comercialización con asistencia técnica.


Digestion technology for biogas plants
A German company, active in the machine tools sector, developed a modular designed container for the retrofitting of 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 bio-extrusion. The company seeks industrial partners for further development under a technical cooperation agreement and/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 co-operation.
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 filtrated 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 bio-extrusion:
The developed process named bio-extrusion 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 (Carbon/Nitrogen) ratio, because the cellulose and hemicelluloses is opened and released from the embedding lignin coat. The fivefold and sixfold sugars (polysaccarides) are made quicker available. Low molecular and fast transforming substances develop, for example alcohol and other compounds.

Improved mechanical characteristics:
- 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
- High mass contents can be inserted via a different path for solids

Enhancement of biomechanical 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/n ratio

The company seeks industrial partners for further development under a technical cooperation agreement and/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 become available more quickly
- 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.
Role of partner 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