All our biogas holder solutions are based on experience, and this is the key to Sattler Ceno TOP-TEX's position as one of the leading and biggest suppliers for gas holders worldwide. Our own Research & Development unit ensures that all kinds of tasks and new application fields are implemented and developed using state of the art technology, also in the future. This competence also enables us to develop customized biogas holder solutions together with our clients.
The central pole supporting the culmination point ensures that the double-shell biogas roof withstands all kinds of external loads, such as snow, rain and wind loads etc. The double warped surface prevents the roof from pumping and fluttering in the wind. Both membranes are fastened to the outer wall of a steel or concrete tank. The gastight design protects the gas holder against under- and overpressure on the gas side. Level metering systems provide electronic signals about the filling level inside the gas membrane, which can be used for the plant control system provided by the client. Since this storage system is depressurized, it may only be combined with other depressurized products, such as a single-shell biogas roof.
Their shape is frequently determined by the space available for them. Cylinder-shaped gas bags are used either in a horizontal position in buildings or suspended in steel and concrete tanks. Depressurized gas bags are mostly filled and emptied via outlets in the stable top or bottom surfaces. The filling level is measured using a rope length system. In order to achieve good measurement accuracy, it is possible to load down the horizontal gas bag with weights. This ensures a regular movement of the membrane. Gas bags must be surrounded to withstand external loads.
The membranes are manufactured from polyester fabric that is PVC-coated on both sides. Different membrane types are used, depending on the prevailing static, legal, and customer requirements.
Tank-mounted double membrane gas holders consist of a formative outer membrane and of an inner membrane that hermetically seals the fermentation space (gas-tight seal). The pressure generated inside the intermediary space by a permanently functioning supporting air blower keeps up the outer membrane, such that the gas holder withstands all kinds of external loads. Much like the DMGS, this gas holder type also uses the patented AIRFLOW-SYSTEM. Both membranes are anchored to the crown or to the outer wall of the steel or concrete tank using clamping rails with a positive and non-positive fitting. The positive fitting is secured by a rope welded into the outer rim of the membrane.
A substructure prevents the inner membrane from plunging into the substrate and from being destroyed by agitators. The braces and central pole are designed to assume the required loads. We provide you with static calculations including proof upon request.
The Sattler double membrane gas holder consists of a formative outer membrane and of an inner and a floor membrane forming the actual gas space. All membranes are produced in-house and thus ensure Maximum Quality. A permanently functioning supporting air blower Feeds air into the intermediary space between the inner and outer membranes, at a slight over-pressure. The supporting air enters via the patented AIRFLOW-SYSTEM. This Permits regular air intake across the entire construction height of the Sattler double Membrane gas holder.
In the standard configuration, a specially designed blower with a flat characteristic pressure curve combines high operational safety with Maximum profitability. The operating pressure in the double Membrane gas holder thus remains constant, regardless of the amount of gas taken in or flowing out.
The supporting air helps to hold the shape of the outer membrane. This enables the gas holder to withstand external loads, such as wind or snow. At the same time, the inner Membrane is also under slight pressure. This "operating pressure" serves to recirculate the Biogas stored in the plant.
The filling Level of the stored Biogas is measured either via ultrasonic measuring or using the rope length method. A purpose-designed inner Membrane ensures an ideal measurement Signal. This is key in ensuring productive Operation of the biogas holder.
All three membranes are durably mounted on the existing foundations using a gas-tight clamping ring. A hydraulic safety valve serves to prevent damage to the Sattler double membrane gas holder in the (hardly likely) event of overpressure occurring in the tank.
Whether concrete or steel tank: the CENO high silo roof is the ideal solution for low-emission, but not for gas-tight, tank covers in many biogas applications. The statically secured design and construction of the roof enables maximum resistance against wind and snow loads. Sattler Ceno Biogas's long-standing experience has influenced the design of the high silo roof. The roof has a characteristic shape that prevents it from pumping or fluttering in the wind. This lastly contributes to a profitable and safe Operation of the biogas plant. At the same time, this design reduces the load on the membrane material and contributes to a Long Service life of the CENO high silo roof.
A central pole ensures the required prestrain of the high silo roof and carries external loads such as wind and snow.
This Feature also prevents the Emission of biogas, and the CENO high silo roof is thus an important environmental benefit. The roof also supports our clients in the profitable and optimized running of the plant. The cover prevents the stored slurry from being watered down, thus increasing the Nitrogen content, hence its fertilizing qualities. The use of Mineral fertilizers can therefore be widely reduced. Another Advantage of a more concentrated slurry is the larger storage capacity of your silo.
The CENO high silo roof is a convincing solution both in agriculture and in industrial Biogas applications, due to its sophisticated design and versatile use.
Fields of application
The hose system provides efficient and frequently proven solutions for three different fields of application:
The umbrella is made of a cotton cloth of different qualities, ranging from water-repellent to water pressure and decay-resistant or flame-retardant. In addition, only proven and solid umbrella stands made of aluminium are used. The umbrella comes in three different standard sizes.