News

Home / News / Biogas Tanks
Biogas Storage Tanks

Biogas Tanks

In today's era of pursuing sustainability, renewable energy plays a crucial role, with biogas as a significant component leading innovation and development in the energy sector. The storage systems of biogas hold a key position in the energy field and are irreplaceable in renewable energy systems.

Biogas, a mixture of methane and carbon dioxide produced through the fermentation of organic waste, possesses clean and renewable characteristics, making it a vital alternative to traditional energy sources. By efficiently collecting and utilizing organic matter, biogas not only reduces greenhouse gas emissions but also injects vitality into the energy sector.

The storage systems of biogas play a critical role in the energy industry as energy demands are often fluctuating. These systems exhibit peak-shaving capabilities, providing stable energy supply during periods of high energy demand. Their flexibility and controllability make them integral to energy systems, helping manage fluctuations in energy supply and demand, thereby enhancing overall system reliability and stability.

 Principles of Biogas Generation

Organic Matter Decomposition

The formation of biogas begins with the decomposition of organic matter, derived from various waste sources such as agricultural residues, livestock manure, and food waste. Microorganisms break down these organic materials in storage or fermentation tanks, producing various gases, with methane and carbon dioxide being the primary components.

Importance of Anaerobic Conditions

Biogas generation primarily occurs in anaerobic environments. Accumulation of organic matter in storage tanks gradually depletes oxygen at the bottom. Anaerobic conditions are crucial for biogas production, as they prompt microorganisms to decompose organic matter through anaerobic digestion instead of aerobic decay.

Microbial Fermentation Activity

Microorganisms play a vital role in the biogas production process, particularly anaerobic bacteria, with methane-producing bacteria being predominant. Through fermentation, these microorganisms break down organic matter into methane and carbon dioxide, serving as the primary contributors to biogas production. This microbial activity occurs under anaerobic conditions, ensuring the predominant gas produced is methane.

Methane Generation Reaction

The final step in biogas production is the generation of methane, resulting from the further decomposition of organic matter, such as carbohydrates, by methane-producing bacteria under anaerobic conditions.

Biogas Tanks

Biogas tanks are devices designed for the storage and collection of biogas, typically constructed within biogas production systems. Their primary function is to effectively store generated biogas for subsequent energy utilization. Through well-designed structures, biogas tanks maintain gas stability, ensuring safe and efficient storage for a stable and reliable energy source in the energy system.

Applications of Biogas Tanks

Biogas Storage: One of the main functions of biogas tanks is to store generated biogas. During peak biogas production periods, the tank can accommodate a significant amount of biogas, providing a continuous energy reserve. This storage capacity is crucial for balancing biogas supply and demand, enhancing system controllability.

Balancing Energy Demand: Biogas tanks contribute to balancing and buffering the energy system by providing a buffer for biogas and balancing the ability of the energy system to cope with demand peaks and valleys. This balancing effect plays a crucial role in energy management.

Improving Energy Efficiency: By efficiently storing biogas, biogas tanks enhance the efficiency of the energy system. They can adjust the energy production-to-supply ratio more flexibly, reducing waste of excess energy and improving overall energy utilization efficiency.

Addressing Fluctuating Energy Demand: The design of biogas tanks allows for rapid responses to fluctuations in energy demand, providing resilience to the system. In times of significant energy demand fluctuations or emergencies, biogas tanks can offer backup energy support, ensuring system stability.

Advantages of Bolted Steel Biogas Tanks

We offer various types of Bolted Steel Tanks, including enamel-assembled tanks, epoxy resin tanks, galvanized tanks, stainless steel tanks, and carbon steel tanks. Bolted Steel Tanks, also known as spiral Bolted Steel Tanks, are commonly used for biogas storage and offer the following advantages:

Flexibility: Bolted Steel Tanks typically adopt a modular design, allowing for assembly and adjustment based on specific storage capacity requirements. This flexibility makes them an ideal choice for biogas projects of varying scales.

Easy Installation and Disassembly: The assembly and disassembly of Bolted Steel Tanks are relatively straightforward, facilitating the rapid construction and dismantling of biogas storage systems. This simplicity is advantageous for temporary or mobile projects.

Corrosion Resistance: Bolted Steel Tanks are often made from corrosion-resistant materials, such as fiberglass-reinforced plastic (FRP) or other corrosion-resistant coatings. This helps protect the tank from corrosive components present in biogas.

Sealing Performance: Bolted Steel Tanks are designed with excellent sealing performance, effectively preventing biogas leaks. This is crucial for ensuring the efficient operation and safety of the system.

Adaptability to Various Gases: Bolted Steel Tanks can be used not only for biogas storage but also for meeting the storage needs of other gases. This versatility allows them to be flexible in different application scenarios.

Cost-Effective: Due to the modular design and relatively simple manufacturing process, the production and transportation costs of Bolted Steel Tanks are relatively low, contributing to the overall cost-effectiveness of projects.

In summary, Bolted Steel Tanks demonstrate flexibility, ease of installation, corrosion resistance, good sealing performance, and cost-effectiveness in the storage of biogas. They are suitable for biogas projects of different scales and requirements.

Bolted Biogas Tank Design and Installation

Design Principles and Structure

Structural Stability and Material Selection: In the design of bolted biogas tanks, we prioritize structural stability by choosing high-strength, corrosion-resistant materials such as enamel-assembled tanks, epoxy resin tanks, and stainless steel tanks. This ensures that the tank can withstand the pressure of biogas storage and remain stable in various environmental conditions.

Modular Design and Flexibility: All our Bolted Steel Tanks adopt a modular design, allowing the tank to be assembled and adjusted according to actual needs. This enhances the design's flexibility and adaptability to meet the requirements of different projects.

Sealing and Explosion-proof Design: All our Bolted Steel Tanks possess excellent sealing performance to prevent biogas leakage. Explosion-proof measures, such as the installation of safety valves, are considered in the design to ensure that the internal pressure of the tank remains within a safe range.

Installation Process and Precautions

The installation of bolted biogas tanks is a complex and crucial process, requiring strict adherence to design specifications and relevant safety standards. The following is a general process for installing bolted biogas tanks:

Site Preparation: Inspect the construction site to ensure a level and stable foundation that complies with relevant standards and design requirements. Accept and prepare the necessary installation equipment and tools, including lifting equipment, bolt tools, measurement tools, etc.

Foundation Construction: Excavate and prepare the foundation, ensuring it meets design specifications and can support the weight and pressure of the biogas tank. If necessary, reinforce and treat the foundation to meet the installation requirements of the tank.

Bolted Steel Tank Assembly: Transport the modules of the tank to the construction site and inspect them to ensure they are undamaged. The tank, assembled from connections between individual steel plates, utilizes professional bolted techniques to ensure strong and sealed connections. Check the connection points for compliance with design requirements to prevent gas leakage and other safety hazards.

Installation of Roof and Accessories: Install the tank's roof, ensuring its sealing and stability. Install accessories such as inspection ports, safety valves, etc., ensuring their proper functioning.

Safety Inspection and Testing: Conduct a comprehensive safety inspection to ensure that each part of the tank complies with relevant safety standards and regulations. Perform pressure testing on the tank to ensure its stability and safety under normal operating conditions.

System Debugging and Operation: Debug the entire biogas tank system to ensure that each part functions coordinately without any abnormalities. Gradually start the tank, monitor the generation and storage of biogas, and ensure the system operates normally.

Throughout the installation process, strictly adhere to design drawings, relevant standards, and regulations to ensure safe construction and the stable operation of the system. If necessary, it is advisable to have professional engineers and technicians supervise and guide the process.

Role and Design of the Tank Roof

Preventing Gas Leakage and Sealing Design: The tank cover is a crucial part of the biogas tank, ensuring its design includes efficient sealing performance to effectively prevent biogas leakage. The sealing design should comply with relevant standards to ensure the safe operation of the system.

Setting of Safety Valve: Consider the installation of a safety valve in the tank cover design to prevent excessive internal pressure in the tank, ensuring the safety of the tank under various working conditions. The selection and setting of the safety valve should comply with relevant safety standards.

Consideration of Inspection Ports and Ventilation: The tank cover design should include inspection ports for convenient inspection and maintenance of the tank's interior. Proper ventilation devices should be set up to ensure good ventilation inside the tank and eliminate harmful gases.

Throughout the design and installation process of bolted biogas tanks, we strictly adhere to international standards such as AWWA D103-09, OSHA, ISO 28765, NFPA, etc., to ensure that the tank meets the highest quality and safety standards during the design, manufacturing, and installation stages. We are committed to providing excellent products to our customers, ensuring the performance and reliability of biogas tanks, while also emphasizing environmental protection and safety.

Factors Affecting the Lifespan of Biogas Tanks

Tank Design Structure: The design structure of the tank directly influences the lifespan of biogas storage. The rationality and stability of the structure are key factors. Proper modular design and strength analysis can ensure that the tank is not subjected to excessive stress during long-term use, thus extending its lifespan.

Material Selection and Corrosion Resistance: Material selection is crucial for the corrosion resistance of biogas tanks. Choosing materials with high corrosion resistance, such as enamel-assembled tanks, epoxy resin tanks, and stainless steel tanks, helps prevent the impact of corrosive components in biogas, thereby increasing the tank's lifespan.

Impact of Operating Conditions: The operating conditions of biogas tanks directly impact their lifespan. Factors such as temperature, pressure, humidity, etc., should be adequately considered. In extreme climates or special environments, adjustments to the design and additional protective measures may be necessary to ensure the tank's stable operation over an extended period.

Importance of Regular Maintenance and Inspection: Regular maintenance and inspection are critical steps to ensure the long life of biogas tanks. Periodically inspecting the tank's structure, sealing, corrosion-resistant coatings, etc., and promptly identifying and addressing potential issues help prevent major malfunctions during the tank's use, thus extending its lifespan.

By comprehensively considering these factors, using high-quality tanks, ensuring that the design and manufacturing comply with relevant standards and specifications, and conducting regular maintenance and inspections, the lifespan of biogas storage tanks can be maximized, enhancing the stability and reliability of the system.