ETW Energietechnik has constructed a biomethane plant in Rittershoffen in cooperation with the making plans workplace Rytec. The processing capability of the plant, which went into operation in February 2023, is set 700 Nm³ of uncooked biogas in step with hour. Because of this as much as 350 Nm³ of biomethane in step with hour is fed into the herbal gasoline grid. That is kind of identical to the common gasoline intake of 20,000 passenger automobiles.
The challenge was once initiated by way of 3 younger, visionary farmers from Alsace who’re dedicated to environmental coverage and renewable energies and wish to advertise sustainable agricultural use within the area. Best agricultural residues from the rapid atmosphere are used as substrates.
The low energy intake of 137.6 kW electrical makes the plant from ETW cutting-edge for biomethane crops of this measurement magnificence. This considerably reduces the danger of long term electrical energy value will increase. Even with a downstream high-pressure compression plant, which compresses the processed biomethane to 67.7 barg (bar gauge, overpressure) and feeds it into the herbal gasoline grid, the facility intake of all the plant is not up to 202 kW electric, considerably not up to related merchandise in the marketplace. Because of this all the machine consumes not up to 7 % of the calories equipped by way of the biomethane.
When designing the plant generation for the fermentation of the various residual fabrics, nice significance was once connected to high quality. The “ETW Smartcycle” biomethane plant from ETW Energietechnik is of prime quality, dependable and low-maintenance. Because of the usage of oil-free screw compressors and an clever plant regulate machine, the plant has the bottom calories intake in the marketplace, in step with the producer.
For the concrete, prefabricated portions from Drössler Umwelttechnik with factory-concreted set up portions similar to agitator frames had been used. All integrated portions have further sealing flanges. The sandwich development of the tank partitions is thermally insulated and already factory-fitted with built-in heating pipes which might be liked by way of the concrete.
The stirring and separation generation was once performed by way of the Paulmichl corporate. The agitators are supplied with tough exterior force generation. Particularly the fermenter agitator “Mammut” convinces on the Rittershoffen plant with a powerful agitating efficiency at a excessive dry subject content material. The infinitely variable hydraulic adjustment of the agitators permits optimum adaptation to the fermenter substrate. The panoramic sight glasses evolved by way of Paulmichl supply operators with an perception into the tracking of the plant operation. Dependable separation is accomplished by way of a separator from the “PM260” sequence, which is specifically tailored to the fermentation residue. By the use of strain regulate of the separator, the feed pump is managed in its supply price, in order that operation can happen and not using a feed tank and overflow pipe.
The gasoline garage tanks from Sattler have a excessive tensile energy and coffee permeability.
With Biog’s solids feeder, extra challenging residues similar to straw and manure will also be fed in liquid shape. The machine in Rittershoffen is composed of a biofeeder. The downstream “Biomerge” blending machine mixes fermenter liquid with the shredded subject matter and pumps it thru an eccentric screw pump as a homogeneous mass into the fermenter. Stones in addition to different international our bodies are effectively separated within the general machine. This is helping to cut back the wear and tear and tear at the pumps in addition to at the downstream generation.
Gate valves and measuring generation are each and every double-protected, in order that the plant is provided with Rytec’s best protection requirements.
The low-energy gasoline processing plant from ETW, the frequency converters from Rytec and the long run CO2 liquefaction generate a detrimental CO2 footprint on stability.
ETW Energietechnik