Three types of biogas storage tanks are used in biogas projects: double membrane gas holders, dry steel gas holders, and wet steel gas holders. Qingdao Haiyue Double Membrane Gas Holder Manufacturer hyhbm.com provides an overview of the comparative advantages and disadvantages of these three types of biogas tanks.
Biogas Double Membrane Gas Storage TankThe double-membrane gas storage tank features a 3/4 spherical shape. The main body is constructed from PVC/PVDF polyester material and processed with special technology. Haoyue's double-membrane gas storage tank is a combination of the inner and outer membranes, bottom membrane, and auxiliary equipment. The membrane material boasts advantages such as UV resistance, antibacterial properties, and wear resistance, with tensile strength up to 300-900N/5cm. A blower provides a constant storage pressure between the outer and inner membranes.
Dry-Type Steel Gas Storage VesselThe biogas storage steel structure is manufactured using carbon steel welding technology, whereas the Hai.Yue dry gas holder employs anti-aging rubber membrane materials for biogas sealing and isolation. This involves ballast weight and rope guide installations, making the process costly and time-consuming. Additionally, the steel structure beneath the gas holder's sealing components is still in contact with the biogas, necessitating regular maintenance.
Wet-Type Steel Gas CylinderDue to the wet gas holder still utilizing complex steel structures, while the biogas wet gas holder employs a water seal for sealing, the external structure of the wet gas holder is similar to that of a dry gas holder. However, the internal steel structure of the wet gas holder comes into direct contact with biogas. If the anti-corrosion coating of the gas holder is not properly protected, there is a high risk of corrosion and biogas leakage. Moreover, in the severe cold environment of the north, it is necessary to heat the gas storage tank to prevent the water seal from freezing. Compared to dry gas storage tanks, the operation and maintenance of wet gas holders are more complicated and troublesome.

Why are Bi-Membrane Biogas Storage Tanks Better Than Dry Steel and Wet Storage Tanks? What are the advantages and features of bi-membrane tanks?
Biogas double membrane gas holders are more environmentally friendly than dry steel and wet gas holders.
The double-membrane biogas storage tank does not require the discharge of large amounts of phenol-containing wastewater like wet gas tanks, nor does it cause further environmental pollution.
Biogas double membrane gas holder is more convenient for construction than dry steel and wet gas holders.
With just a solid cement foundation in place, installation can be completed in a matter of days, saving significantly on both installation costs and time, and allowing for immediate use upon completion of construction.
Biogas double membrane gas holders are more affordable than dry steel and wet gas holders.
Due to its lightweight and compact design, the Haiyue double-layer membrane gas storage cabinet can be customized in size and assembled on-site after being processed at a biogas tank factory. Construction typically takes one to two days, and in cold regions, there is no need to worry about freezing and ice formation, saving time and labor costs.
Biogas Double Membrane Gas Vaults Are Safer Than Dry Steel and Wet Gas Vaults:
Haiyue's double membrane gas cabinets are stable and reliable, with nearly two decades of experience in professional production. The company's selection of materials and production quality meet industry standards, earning recognition and praise from numerous clients in the biogas project sector. The double membrane gas storage cabinets are equipped with safety devices such as overpressure relief valves and biogas leakage alarm systems. The entire set of double membrane gas cabinet equipment undergoes rigorous safety testing during the manufacturing process at Haiyue's factory and upon shipment, ensuring quality and customer satisfaction. The operation of Haiyue's biogas cabinets is fully unattended.