Characteristics and uses of double film gas holder

Double-Membrane Gas Holder

A double-membrane gas holder is an advanced gas storage device, categorized into integrated and independent types, each with distinct features and applications. Below is a detailed explanation and summary of these two types:

I. Overview of Double-Membrane Gas Holders

A double-membrane gas holder consists of a base membrane, inner membrane, and outer membrane. It is suitable for storing various gases such as biogas, air, and carbon dioxide, with resistance to biogas corrosion, ultraviolet (UV) radiation, and microbial degradation. Its unique structural design and material selection ensure stable gas storage and efficient utilization.

II. Integrated Double-Membrane Gas Holder

Features:

• Installed above the tank, designed for biogas storage and output, typically spherical or conical in shape.
• Compact structure, cost-effective, and land-saving, often mounted atop anaerobic tanks.
• Easier installation for large-diameter tanks compared to traditional rigid roof systems.

Applications:

• Primarily used in biogas projects to store biogas efficiently, minimizing leakage and waste.
• Compatible with automated biogas power generation systems, protecting pipelines and equipment while extending service life.

III. Independent Double-Membrane Gas Holder

System Components:

• Includes a base membrane (excluding integrated types), inner membrane, outer membrane, constant-pressure control cabinet, safety protectors, control devices, and auxiliary materials.
• The base membrane ensures foundational sealing; the inner membrane isolates stored gas, while the outer membrane regulates pressure and protects the inner membrane.

Safety Features:

• Multiple pressure protection mechanisms to maintain safe operating limits.
• Specialized leak detectors for enhanced safety monitoring.

Applications:

• Suitable for storing neutral gases (e.g., biogas, air, CO₂).
• Used in energy storage systems (e.g., hydrogen storage from solar/wind energy).
• Widely applied in gas supply, explosion prevention, water treatment, aerospace, and other industries.