The Northern Bio-gas flex membrane roof system

The Northern Biogas Flex Membrane Roof System

The Northern Biogas Flex Membrane Roof System

 

The Northern Bio-gas flex membrane roof system offers many benefits to the AD system:

Gas Storage

Gas storage is another important factor in the AD system. During the course of the day gas production varies based on many factors, diet fed to the animals, temperature, substrates added, day to day changes in farm operations, etc. The ability to store gas and consume the gas when desired is very important. Without variable gas storage gas use must equal gas production. This is a very limiting factor when sizing the equipment for the gas use. Another important factor in gas storage is the ability to use the gas when rates are higher. Many of today’s power purchase contracts offer premium rates during peak periods.

Gas Storage

Gas Storage

Gas Tight Seal

Unlike many rigid roof systems the Northern Bio-gas flex membrane system provides an air tight seal. The flex membrane system expands and contracts with temperature changes and variable gas pressures. The roof system is equipped with over and under pressure relief systems. In the event of an extreme over pressure situation the Northern Bio-gas flex system will vent as required to prevent structural damage to the roof and vessel. Unlike some rigid roof systems which have experienced catastrophic failures from over pressure. The Northern Bio-gas flex system will release pressure until the system is corrected.

Maintenance

We know that all mechanical equipment will eventually need maintenance. The Northern Bio-gas flex system allows for easy removal of a portion of the roof system to access mixers etc. After removal of equipment the roof is easily resealed without stopping or emptying the tank. If for some reason a major maintenance event is required such as cleaning the tank, the flex roof is simply rolled back giving complete access to the tank. After maintenance is complete the roof is resealed and quickly becomes fully operational.
It should be noted that unlike many single tank systems the Northern Bio-gas multi-tank system allows for one tank to be down for maintenance while continuing to operate the remaining tanks.

Gas Conditioning

Gas saturated with moisture and high hydrogen sulfide is very detrimental to combined heat and power systems. Northern Bio-gas has developed a simple and effective method to minimize moisture in the gas delivery system. Northern Bio-gas has also developed a system to reduce hydrogen sulfide by the use of the “iron sponge system”. The iron sponge has long been an effective tool for reduction of hydrogen sulfide; however it has been very labor intensive. Northern Bio-gas has developed a quick change out system to greatly reduce the labor intensive process.