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Biogas Storage Solutions
State-of-the-art biogas storage facility enables maximum gas utilization for planned biogas storage before exporting to the grid or whenever a generator is off-line for maintenance.
In planned storage, biogas can be stored in significant quantities. These vessells allow generation plant managers to gather sufficient quantities of fuel, which can later be exported, to the grid at a peak price point to optimise revenue.
Double membrane biogas storage containers
If you have ever wondered where or how to store biogas, the double membrane biogas storage tank system makes it easy with:
- Simple maintenance-free operation,
- Easy installation (only a few days), and
- Long life.
Double membrane biogas storage tank system — principles of operation
The double membrane biogas storage tank system is ideally suited for cost effective biogas storage. It consists of an external membrane, which forms the visible outer round contour of the tank, an internal membrane, and a bottom membrane, which encloses the actual gas space.
During biogas storage, a pair of duty and standby blowers provides air to the space between inner and outer membranes to regulate the variation in gas input and gas output. This keeps the gas pressure inside the tank at a constant level. It also keeps the external membrane rigid — protecting it against poor weather conditions.
The supporting air in the space between the inner and outer membranes is balanced with the addition of an air damper valve. As volume of the gas space changes according to the quantity of biogas flowing in and out of the tank, a level detection device measures the volume of the inner membrane and relays the information (amount of biogas stored) to the control panel to regulate the operation of the biogas storage plant.
The biogas supply and discharge pipes are cast into the concrete foundations before the actual erection of the storage tank and then hermetically sealed to the bottom membrane on installation. The double membrane biogas storage tank is then clamped to the concrete foundation by means of an anchor ring.
Material and standards for the double membrane biogas storage tank system
Store biogas with confidence in the double membrane biogas storage tank system made from reliable materials. The membranes are highly tear-resistant polyester fabrics with a special PVC surface treatment and acrylate varnish.
The fabric is highly flame-poof according to DIN 4102-B1 (higher specification fabric is available on request). The special surface treatment formula guarantees a high resistance against permeability and UV. The temperature resistance ranges from –30°C to +60°C.
The fabric is also resistant to the impact of the different biogas ingredients and the white colour of its external membrane has a highly reflective effect.
The construction and dimensions of the double membrane biogas storage tank comply with all relevant standards. The tank is resistant against wind and heavy loads of snow and guarantees safe operation.
