AGROTEL CenoTec Biogas storage Concrete protection Concrete refurbishment Emission protection Substrate storage

Efficient gas tank: Double Membrane Gas Storage

The success and the efficiency of the AGROTEL Double Membrane Gas Storage are due to it’s robust design and the proven interaction of the individual components.

Gas storage with double membrane

AGROTEL Double Membrane Gas Storages are constructed for high operating pressures and meet the safety requirements for biogas plants (TRAS120) of the German Federal Ministry for Environment. Depending on the requirements, we implement storage volumes of 29 %, 33 %, 40 % and 50 %.

Design of the double membrane gas storage

Stainless steel support (1.4571)
Substructure: textile belts run in a star shape from the centre support to the tank wall, fastened every 80 cm to the lower stainless steel clamping rail
Inner and outer membrane made of polyester fabric with PVC coating and PVC membrane cover
More about our materials here

Robust design

The proven interaction of the individual components ensures maximum stability, even with high wind and snow loads.

Short construction time

Our "all from one source principle" allows us to respond flexibly and quickly to individual customer requests and guarantees short delivery and construction times.

High-quality materials

For our gas storage solutions we use high-quality technical textiles, which are made up at our site in Lower Bavaria, using the latest production machinery.

Construction

1 Outer membrane
2 Inner membrane
3 Airflow system supply air
4 Airflow system exhaust air
5 Belt system
6 Stainless steel anchoring ring
7 Rain drain skirt

8 Fan with non-return flap
9 Pressure control valve
10 Safety valve
11 Inspection window
12 Fill level measurement

Wall mounting on concrete container

Force-locking double stainless steel clamp with integrated belt fastening:

1 Outer membrane
2 Inner membrane
3 Belt
4 Stainless steel profiles
5 Cellular seal

Wall mounting on metal container

Materials - Gas Storage

High frequency welded PVC-membrane

Our technical textiles are high-frequency welded per DIN 18204-1. During the welding process, the highest temperature is applied directly at the seam, creating an optimal bond.

Weatherproof

For gas storage membranes we use technical textiles that are UV-resistant, weatherproof, gas-resistant and anti-mould treated.

Fabric types in accordance with requirements

Our high-quality technical membranes are selected in accordance with static and operational requirements.

Flame retardant

Our technical textiles are flame retardant (B1) and non-dripping.

High tear resistance

Due to the special process of pre-stretching during tarpaulin production, our technical textiles guarantee optimum surface stability.

Metal components made of stainless steel

All metal components such as centre support, screw connection and fastening technology are made of corrosion-resistant stainless steel.

Storage volumes

Storage volumes of 29 % to 50 % of a hemisphere.

1 29 %
2 33 %
3 40 %
4 50 %

Airflow-System

Variants for supply and exhaust air with patented airflow system or air guidance solution.

1 Outer membrane
2 Airflow system supply air
3 Airflow system exhaust air
4 Inner membrane
5 Belt-net substructure

Inner membrane solutions

Chemical requirements: grease-resistant inner membrane

Thermal requirements: Special coating / insulated inner membranes and iso-sandwich overlay

Concrete protection

WireTarp concrete protection for gas area and tank crown.

Double membrane gas storage - customised solutions

Thanks to our expertise, we develop and manufacture customised solutions for your requirements. Different geometric shapes, static reinforcements or logos can be incorporated.

Successfully implemented solutions so far:

– Cable bracing for operating pressures >30 mbar, even with very large storage tanks
– Container solutions
– Truncated cone membrane
– Cigar-shaped storage tanks
– Rectangular tanks as free-standing tanks or on rectangular containers