Biogas Flare

1．Easy construction

The combustion torch generally processes less than 8,000 cubic meters per hour. The equipment has been assembled before leaving the factory. After trial operation and debugging, it only needs to be connected on site, and the installation work is relatively small.

2. Efficient combustion technology

 · Using a small flame to ignite a large one ensures safe gas supply, complete combustion, and reduced greenhouse gas emissions: The combustion torch utilizes a highly efficient burner design and a well-sealed structure, ensuring thorough mixing of biogas and air, achieving near-100% combustion efficiency. This completely converts methane （CH₄, with a greenhouse effect over 25 times greater than CO₂） in the biogas into carbon dioxide （CO₂） and water （H₂O）, significantly reducing direct greenhouse gas emissions.

· Smokeless, Low Noise, and Low Light Pollution: Through rational structural design and combustion control, ground-based torches achieve smokeless combustion. Their enclosed structure effectively isolates combustion noise and flame light, significantly reducing the impact on the surrounding environment and residents compared to other torches with exposed flames.

· Effectively removes odors and harmful substances: High-temperature combustion thoroughly decomposes odorous gases such as hydrogen sulfide (H₂S) and trace volatile organic compounds （VOCs） that may be present in biogas, preventing the spread of odor and secondary pollution..

3. High reliability

3.1. Sealed Combustion, High Safety: The flame is completely enclosed within the combustion chamber, isolated from the outside world. The internal insulation effectively prevents heat transfer, keeping the surface temperature below 60°C.

3.2. Thanks to the air intake louvers, natural air intake at a specific angle allows for mixing and combustion using the biogas's own pressure. The nozzle's structural design is fundamental to this mixing effect. Utilizing multiple nozzle groups, a low flow rate, a unique aperture, and an injection angle, the biogas jet has sufficient kinetic energy and a wide range of injection. This allows for a wide range of air-to-fuel ratios, with no flameout or flashback.

3.3. In addition to the nozzle's flashback protection, the valve block is equipped with a pipeline flame arrester for dual protection.

3.4. The flame utilizes ultraviolet flame detection to reliably detect the presence of flames and prevent biogas leakage.

3.5. High-pressure ion ignition is used for high ignition efficiency, with a success rate exceeding 99%.

3.6. To ensure efficient flare combustion, the control system incorporates multi-stage protection logic, integrating hardware and software to ensure safe flare operation.

4. Multifunctional control system

It adopts PLC+Touch screen to monitor in real time, simulate operation data, simulate torch dynamics, with intuitive screen, simple operation, abundant adjustable points, adapt to full flow control, and provide host computer communication interface.

5. Protect the environment

5.1. Combustion Efficiency >99%: Nearly completely eliminates unburned methane （CH₄） emissions, delivering significant environmental benefits.

5.2. Stable Flame: No flickering or extinguishing, ensuring safe and reliable operation.

5.3. Smokeless Combustion: Thorough mixing eliminates the formation of soot （black smoke） caused by insufficient air.

5.4. Low Noise: Stable combustion reduces noise caused by pressure fluctuations and deflagration.

5.5. Low Nitrogen Oxides （NOx）: Uniform combustion without localized high temperatures effectively suppresses thermal NOx generation.

5.6. Wide Load Turndown: Able to adapt to fluctuations in biogas production, maintaining efficient combustion over a wide flow range.

Advantages and application scope of internal combustion torch

As the core equipment for industrial exhaust gas treatment, emergency combustion and specific scenarios （such as oil fields, chemical industry, and environmental protection）, the advantages of internal combustion flares mainly come from efficient combustion, low pollution emissions, strong environmental adaptability and high safety. The following six core dimensions can be used to analyze the advantages of internal combustion flares:

1、High combustion efficiency and thorough exhaust gas treatment

·The core design principle of an internal combustion flare is "forced mixing + complete combustion." Compared to traditional external combustion flares （which rely on natural air mixing）, they offer significant combustion efficiency advantages:

·Active air distribution and mixing: A built-in fan or ejector precisely controls the mixing ratio of air (or combustion aid) and the gas being treated （such as industrial exhaust or combustible waste gas）, ensuring the gas is within the "optimal combustion concentration range" （avoiding excessively rich air, resulting in incomplete combustion, or excessively lean air, resulting in flameout）.

·Optimized combustion chamber structure: Typically, a closed or semi-closed combustion chamber is employed, along with a high-temperature lining （such as refractory bricks or ceramic coatings）. This maintains a high-temperature combustion environment of 800-1200°C, thoroughly decomposing harmful components in the exhaust （such as VOCs and hydrocarbons）. Combustion efficiency can reach over 95%, and some high-end models can even achieve nearly 100% residue-free ombustion. Low "black plume": Traditional external combustion torches are prone to producing "black smoke" （carbon particle emissions, also known as "black plume"） due to incomplete combustion. Internal combustion torches can significantly reduce black plume through precise air distribution, meeting stringent environmental protection and visual requirements （such as projects near urban areas and residential areas）.

2、Low pollutant emissions, meeting high environmental standards

Against the backdrop of the "dual carbon" initiative and increasingly stringent environmental protection policies, the low-emission advantages of internal combustion flares are crucial:

·Low NOx （nitrogen oxide） emissions: Through "staged combustion" or "flue gas recirculation" designs, localized high temperatures in the combustion zone are reduced （preventing the reaction of nitrogen dioxide and oxygen dioxide in the air at high temperatures to form NOx）. NOx emissions are typically controlled below 50mg/m³, meeting stringent standards such as those of the European Union （EEA） and China's GB 31571.

·No secondary pollution: Besides NOx, combustion products are primarily CO₂ and H₂O, with virtually no unburned hydrocarbons （HC）, carbon monoxide （CO）, or dust emissions. This makes it particularly suitable for treating "highly toxic exhaust gases" in the chemical and pharmaceutical industries （e.g., waste gases containing benzene, toluene, and xylene）.

·Strong compliance: Directly connects to an online monitoring system （CEMS） for real-time monitoring of emissions data, making it easy to pass regular inspections by environmental protection authorities and avoid penalties for exceeding emission standards.

3、Strong environmental adaptability and stable operation under harsh working conditions

The structural design of the internal combustion torch enables it to cope with various extreme environments and is applicable to a wider range of scenarios than the external combustion torch

·Wind, Rain, and Snow Resistant: The sealed combustion chamber effectively isolates external wind and rain, preventing the flame from being blown out or extinguished by rain even in winds exceeding level 10, heavy rain, or snowstorms, ensuring continuous combustion (e.g., offshore oilfield platforms and coastal chemical parks).

·Excellent Low-Temperature Startup Performance: Some models are equipped with a "preheating device" (such as electric heating or fuel-assisted burners) that allows normal startup at temperatures as low as -40°C, making them suitable for projects in northern cold regions or at high altitudes.

·Adaptable to Multi-Component Gases: The system can handle complex gas mixtures (e.g., chemical exhaust containing H₂, CH₄, and C₂H₆, or oilfield associated gas containing small amounts of acidic gases). By adjusting the air distribution ratio, the system ensures sufficient combustion of the different gas components, eliminating the need for frequent equipment replacement.

4、High security and strong risk control capabilities

The core requirement of industrial flares is to "safely handle combustible gases". Internal combustion flares reduce safety risks through multiple designs:

·Backfire Protection: A built-in flashback preventer (e.g., a check valve or flame arrester) prevents the combustion flame from flowing back into the exhaust pipe, preventing ignition and explosion. This feature is particularly suitable for high-pressure exhaust gas processing (e.g., exhaust gas from a refinery's catalytic cracking unit).

· Overpressure/Under pressure Protection: Equipped with a pressure sensor, when the exhaust pressure is too high (potentially causing a pipe rupture) or too low (potentially allowing air to enter the pipe and create an explosive mixture), it automatically triggers valve adjustment or shutdown to prevent accidents.

· Flame Monitoring and Emergency Response: Ultraviolet (UV) or infrared (IR) flame detectors monitor the combustion status in real time. If flameout occurs, the exhaust gas inlet valve is immediately closed and a purge device (using an inert gas such as N₂) is activated to purge the pipe, preventing unburned gas from escaping into the air and posing a safety hazard.

5、Low energy consumption and controllable operating costs

Compared to flares that partially rely on continuous combustion of auxiliary fuel, internal combustion flares offer significant energy savings:

· No need for continuous combustion support: If the exhaust gas being treated has a high calorific value (e.g., methane content ≥5%), the flame can be maintained by the exhaust gas itself, eliminating the need for additional combustion-supporting fuels such as natural gas and diesel. Only a small amount of combustion-supporting agent is used during startup or when the exhaust gas calorific value is too low, significantly reducing fuel costs.

·Optimized fan energy consumption: A variable-frequency fan automatically adjusts air volume based on exhaust gas flow, avoiding the energy waste of a "big horse pulling a small cart" and saving 20%-30% of electricity compared to fixed-frequency fans.

6、Small footprint and flexible installation

Internal combustion flares often feature a "vertical compact structure" with a high degree of integration between the combustion chamber and the air distribution system. Compared to traditional external combustion flares (which require a larger "torch head height" and "safety distance"), their footprint can be reduced by 40%-60%, making them particularly suitable for projects with limited plant space (such as small chemical companies around cities and centralized exhaust gas treatment stations within industrial parks). Furthermore, some models support "modular installation," allowing for flexible addition and subtraction of units based on exhaust gas treatment capacity, making future expansion easier.

Summary: The core application scenarios of internal combustion torches.

Based on these advantages, internal combustion flares are widely used in:

Petrochemical (refining, ethylene, coal chemical) – treating process exhaust gases and plant vent gases.

Oilfield production – treating associated gas and wellhead vent gases;

Environmental emergency response – treating landfill methane and combustible waste gases from sewage treatment plants;

Energy industry – treating exhaust gases from natural gas extraction and transportation.

Their core value lies in meeting the requirements of "high efficiency, environmental protection, and safety" while balancing operating costs and adaptability, making them a mainstream choice for modern industrial exhaust gas treatment.

Core advantages and typical usage scenarios of external combustion torches

The core feature of an external combustion torch is the physical separation of the fuel combustion process from the object being heated or worked. Combustion occurs in an independent combustion chamber, and heat is transferred to the target through a heat exchange medium (air, flue gas, thermal oil, etc.), rather than the fuel coming into direct contact with the object being heated. This structure gives it unique advantages in terms of environmental protection, temperature control accuracy, and safety, and is also suitable for a variety of scenarios with high requirements for the combustion environment.

1、 Core advantages of external combustion torch

1.1. Outstanding environmental protection: complete combustion and low pollutant emissions

·The independent combustion chamber of the externally-fired flare ensures a thorough reaction between fuel and oxygen by optimizing the air intake structure and precisely controlling the air-fuel ratio (the mixture ratio of air to fuel), thereby fundamentally reducing incomplete combustion products.

·Reduced Harmful Emissions: Toxic gases such as carbon monoxide (CO) and hydrocarbons (HC), as well as black smoke (unburned carbon particles), are significantly reduced, easily meeting stringent air pollutant emission standards for industrial furnaces.

·Adaptable to a variety of fuels: Whether using clean gas fuels such as natural gas and liquefied petroleum gas, or low-calorific-value industrial exhaust gases (such as chemical by-product gas, coking coal gas), or biomass gas, combustion characteristics can be tailored by adjusting combustion chamber parameters (such as air volume and combustion intensity). This prevents "explosion," "flameout," and excessive pollution during direct combustion, making it particularly suitable for resource-efficient combustion of industrial exhaust gases.

1.2. Precise temperature control: stable temperature, suitable for fine process

·The "combustion-heat transfer separation" design allows for more controllable heat transfer, avoiding the "localized overheating" and "temperature fluctuations" associated with direct combustion.

·Stable Temperature Control: The high-temperature heat medium (such as flue gas or thermal oil) generated by combustion is first buffered and evenly heated in the combustion chamber before transferring the heat to the target (such as materials or process fluids) via tubular or plate heat exchangers. By adjusting the heat medium flow rate and combustion power, the target temperature can be controlled to within ±5°C or even higher accuracy, meeting the requirements for temperature stability in applications such as material annealing, chemical reactions, and food drying.

·Avoiding Direct Damage: Heat is transferred indirectly through the medium, preventing direct flame contact with the heated object. This protects materials susceptible to oxidation and carbonization (such as precision metal parts and polymers) and reduces product scrap.

1.3. High safety: isolate risks and reduce the probability of accidents

·The physical isolation of the independent combustion chamber from the target area reduces combustion risks structurally:

·Isolating flames from flammable materials: If the heated material is a flammable or explosive medium (such as solvents, oil, or gas), the external combustion structure prevents direct flame contact, preventing accidents such as flash explosions and fires. Even minor anomalies in the combustion chamber (such as flashback) will not directly affect the target area.

·Facilitating safety monitoring: The closed or semi-enclosed combustion chamber can integrate temperature, pressure, and flame detection sensors. In the event of a combustion anomaly (such as flameout or overpressure), the fuel supply can be quickly shut off and the pressure relief device activated, providing enhanced safety redundancy and suitable for high-risk industries such as the chemical, oil, and gas industries.

1.4. High thermal efficiency: waste heat is easily recovered, resulting in lower energy consumption

· The independent combustion chamber structure facilitates integration with a waste heat recovery system, reducing heat waste.

Waste heat reuse: High-temperature flue gases (typically 300-800°C) after combustion can be used in a waste heat boiler to generate steam and preheat combustion air or process water before being released to the atmosphere. This improves thermal efficiency by 15%-30% compared to direct-fired flares without waste heat recovery, reducing energy costs.

· Centralized heat utilization: The heat exchange medium can be piped to multiple distributed heating points (such as multiple equipment within a workshop), achieving "centralized heating and decentralized use." This avoids the energy waste associated with individual combustion units, making it suitable for centralized heating systems in large factories.

2、Typical usage scenarios of external combustion torches

Based on the above advantages, external combustion torches are widely used in industrial, environmental protection, special heating and other fields, especially suitable for "high environmental protection requirements, high temperature control requirements, and high safety risks" scenarios

2.1. Industrial tail gas treatment and resource utilization

· Applicable Scenario: Treatment of "low-calorific-value industrial off-gas" (such as associated gas with low methane content and process off-gas containing trace impurities) generated by industries such as chemical, petrochemical, coking, and coal chemical.

· Core Requirements: Direct emission of this off-gas poses significant pollution risks (e.g., flammability and explosion), but its calorific value is low (typically <1500 kcal/m³), making direct combustion prone to flameout and excessive pollution.

· Advantages of External Combustion: Optimized air distribution in independent combustion chambers ensures complete combustion of the off-gas (eliminating toxic components) while simultaneously recovering combustion heat (e.g., heating process water and generating steam), achieving the dual goals of "environmental compliance and energy recovery." A typical example is the "Coking Plant Raw Gas Externally-Fired Flare Combustion System.".

2.2. Fine industrial heating technology

·Applicable Applications: Materials processing (metal annealing, glass forming), chemical reactions (polymerization, catalytic reactions), food and pharmaceuticals (drug drying, food sterilization), and other processes requiring precise temperature control.

· Core Requirements: Minimal temperature fluctuations (within ±5°C) are required to prevent material oxidation, carbonization, or runaway reactions.

· Advantages of External Combustion: Indirect heat transfer via a heat medium (such as thermal oil or hot air) ensures stable temperature control. For the food and pharmaceutical industries, a closed heat exchange system can also be used to prevent combustion pollutants (such as NOx) from contacting the material, meeting hygiene standards (such as GMP).

2.3. High Hazardous Area Heating/Heat Tracing

· Applications: Oil and gas field wellhead heating (to prevent pipeline freezing), chemical plant heating of flammable and explosive solvents, and oil tank insulation.

· Core requirement: Preventing direct flame contact with flammable and explosive media to prevent fires and explosions.

· Advantages of external combustion: The combustion chamber is physically isolated from oil and gas pipelines and solvent storage tanks, using hot air or hot water as the heat transfer medium. Flame monitoring and leak alarm systems are also included, significantly reducing safety risks.

2.4. Special combustion in the field of environmental protection

· Applications: Waste incineration exhaust gas treatment (auxiliary combustion to eliminate dioxins), incineration and disposal of hazardous waste (such as waste oil and waste solvents).

· Core Requirements: Ensure the complete decomposition of harmful components (such as dioxins and toxic organic compounds) (requiring a high temperature of over 850°C and a residence time of at least 2 seconds) while controlling secondary pollution.

·Advantages of External Combustion: The independent combustion chamber allows for precise control of combustion temperature and flue gas residence time, ensuring the complete decomposition of harmful components. It also facilitates integration with flue gas purification systems (such as denitrification and dust removal) to meet environmental emission standards.

·In summary, the core value of external combustion flares lies in "balancing combustion efficiency, environmental requirements, and safety risks." They are particularly irreplaceable compared to traditional direct combustion flares in applications such as industrial exhaust gas resource recovery, precision process heating, and high-risk environments.

The core advantages and typical usage scenarios of high-altitude torches

An elevated flare is a device that transports combustible waste gas (or fuel) to the top of a towering flare tower for combustion. Its core design goal is to address the safe disposal and environmentally friendly emission of combustible gases (especially industrial exhaust) through "high-altitude emission + complete combustion." Compared to ground flares and enclosed flares, elevated flares offer significant advantages in specific scenarios due to their "high emission height" and "open, stable combustion." They are widely used in industries such as petroleum, chemical, and oil and gas extraction.

1、The core advantages of high-altitude torches

1.1. High safety redundancy: far away from ground risks, reducing the impact of accidents

· The core safety advantage of high-altitude flares stems from the physical isolation of the combustion point from ground-based facilities, spatially mitigating the risks potentially associated with ground-based combustion:

· Isolating the flame from ground-based flammable materials: The combustion process occurs at heights of tens or even hundreds of meters (flare towers are typically 20-100 meters high, and can reach over 150 meters for large projects). Flames and high-temperature flue gases are kept away from flammable and vulnerable ground-based facilities such as storage tanks, process equipment, and cable trays. This completely prevents accidents such as ground fires, equipment damage, or flame ignition of leaked media. This system is particularly suitable for densely populated plant areas with a high concentration of flammable and explosive materials.

· Mitigating flashback and deflagration risks: The high-altitude flare's "long flare barrel" (the pipe extending from the ground to the top of the tower) creates a stable airflow path. Combined with devices like flame arresters and molecular sealers, this effectively prevents flames from flowing back into the ground-level gas pipeline, reducing the risk of flashback explosions. Even if the exhaust gas contains small amounts of inert gases or fluctuating components, the stable combustion environment at high altitude reduces the risk of deflagration caused by flameout and re-ignition.

· Easy emergency evacuation and response: In the event of abnormal combustion (such as excessive flames or falling sparks), the high-altitude combustion environment provides ample response time for ground personnel and equipment. Furthermore, sparks are extinguished by cooling and diffusion during their descent, minimizing the chance of sparks igniting combustible materials on the ground.

1.2. Strong environmental compliance: sufficient dilution and diffusion to reduce ground pollution

High-altitude emission design leverages atmospheric diffusion to significantly reduce the impact of combustion products on the ground environment, easily meeting environmental standards:

· Reduced ground-level concentrations of harmful substances: After being emitted at high altitude, smoke produced by combustion (such as CO₂, NOx, and trace amounts of unburned hydrocarbons) is rapidly diluted and dispersed by atmospheric airflow, reaching concentrations far below environmental limits (e.g., those in the Petrochemical Industry Pollutant Emission Standards). This prevents ground personnel from inhaling high-concentration smoke and potentially impacting surrounding vegetation and soil.

· Reduced odor and visual pollution: Industrial waste gases (such as sulfur- and amine-containing gases) may produce odors during combustion. High-altitude emission reduces odors as they diffuse, minimizing the sensory impact on the factory and surrounding residential areas. Furthermore, high-altitude flames are more concentrated and easier to control visually than dispersed combustion on the ground, avoiding the visual pollution of "continuous open flames on the ground."

· Suitable for high-flow, intermittent exhaust: Exhaust emissions from the chemical and petrochemical industries often exhibit intermittent, high-flow characteristics (e.g., transient exhaust during plant startup and shutdown, or emergency pressure relief). The high-altitude flare's "open combustion" structure eliminates the need for a complex, sealed chamber, allowing it to quickly absorb high-flow exhaust and maintain stable combustion, thus avoiding environmental violations caused by fluctuating exhaust volumes.

1.3. Simple and reliable structure: low maintenance cost, adaptable to harsh working conditions

· Compared to enclosed flares (such as ground-based incinerators), high-altitude flares offer a simpler mechanical structure, lower failure rates, and are suitable for complex industrial environments

· No complex enclosed chamber: There's no need to design a large, high-temperature, corrosion-resistant, enclosed combustion chamber. The core components are simply the flare stack, flare barrel, ignition system, and molecular sealer. This simple structure reduces manufacturing and installation costs, and reduces maintenance challenges such as enclosed chamber corrosion, coking, and clogging.

· Adaptable to harsh environments: The flare stack utilizes a steel structure, capable of withstanding severe weather conditions such as strong winds, heavy rain, low temperatures (-40°C), and high temperatures (summer sun exposure). The flare tip (combustion nozzle) is made of a high-temperature-resistant alloy (such as Inconel alloy), which can withstand long-term combustion temperatures of 800-1200°C without damage, making it suitable for use in outdoor oil and gas fields and coastal chemical parks. Easy maintenance: Key components (such as igniters and flame detectors) can be designed with "ground remote control + top lift for maintenance", eliminating the need for personnel to frequently climb the flare tower. Daily inspections (such as checking flame stability and sealant sealing) can be completed through remote monitoring, resulting in high maintenance efficiency and low cost.

1.4. Flexible treatment capacity: adapt to multiple waste gases to meet different needs

· High-altitude flares are highly adaptable to flue gas composition and flow rates, and can handle a wide range of combustible gases in industrial scenarios:

· Adaptable to multi-component flue gases: Whether it's light hydrocarbons (such as methane and ethane), heavy hydrocarbons (such as propane and butane), or mixed flue gases containing small amounts of inert gases (such as nitrogen and carbon dioxide), as long as the calorific value reaches the lower flammability limit (typically ≥1000 kcal/m³), the high-altitude flare can achieve stable combustion by adjusting the "combustion air volume" and "flow velocity within the flare barrel," eliminating the need to adjust the structure for a single flue gas.

· Addressing flow fluctuations: A "multi-flare head parallel design" (e.g., main flare + auxiliary flare) can be used to meet varying exhaust flow requirements. A low-flow auxiliary flare is used during normal operating conditions, while a high-flow main flare is used for emergency pressure relief or startup/shutdown. This avoids flameout at low flow rates and incomplete combustion at high flow rates.

2、Typical usage scenarios of high-altitude torches

Based on the above advantages, the high-altitude flare is the core equipment for the safe disposal of combustible waste gas in the petroleum, chemical, oil and gas extraction industries, and is mainly used in the following scenarios：

2.1. Petrochemical and coal chemical industries (core scenarios)

· Applicable Scenarios: Refineries, ethylene plants, and coal chemical plants handle "normal exhaust" (such as process system purge gas), "emergency exhaust" (such as overpressure relief and fire emergency venting), and "startup and shutdown exhaust" (such as pre-startup purge gas and shutdown replacement gas).

· Core Requirements: Exhaust gas flow fluctuates widely (ranging from tens to hundreds of thousands of Nm³/h) and has a complex composition (including multiple hydrocarbons and small amounts of H₂S). Safe combustion must be ensured to avoid explosions or environmental violations.

· Advantages of high-altitude flares: The high discharge height prevents flames from endangering surrounding storage tanks and reactors; the open structure accommodates large emergency exhaust flows; and the high-temperature flare head withstands the high-temperature corrosion of complex exhaust combustion. A typical example is a 120-meter-high emergency pressure relief flare for a large ethylene project.

2.2. Oil and gas exploration and gathering industry

· Applicable Scenarios: Disposal of associated gas at oilfield wellheads (a mixture of methane and ethane produced during crude oil extraction), overpressure venting at gas field gathering stations, and pigging and exhausting at oil pipelines. High-altitude flaring can also be used for associated gas disposal, especially when the gas yield is low and has no recovery value (e.g., at remote wellheads).

· Core Requirements: Harsh field environments (strong winds, low temperatures), dispersed waste gas sources (single or multiple wells for centralized disposal), and the need to avoid flame-induced wellhead explosions.

·Advantages of high-altitude flares: The steel flare tower withstands weather conditions; high-altitude combustion is safe and risk-free, far from the wellhead; and it can be designed as a "skid-mounted mobile flare" (a small flare tower with a vehicle-mounted base) for rotational disposal at multiple wellheads, offering high flexibility.

2.3. Liquefied Natural Gas (LNG) Industry

· Applicable Scenario: LNG receiving stations and LNG storage tanks dispose of "BOG" (boil-off gas) gas. During storage, LNG storage tanks absorb heat from the environment, generating a small amount of boil-off gas (primarily methane). If this gas cannot be recovered promptly (e.g., due to full pipeline pressure), it must be disposed of through flaring.

Core Requirements: BOG gas is pure methane, which is flammable and explosive, requiring stable combustion to prevent leakage. Furthermore, LNG stations are often located along the coast and must withstand high humidity and salt spray environments.

· Advantages of High-Altitude Flaring: High-altitude flaring prevents methane leaks from causing ground explosions. The flare stack and flare barrel feature an anti-corrosion coating, resistant to salt spray corrosion. Molecular seals prevent air from entering the flare barrel, preventing methane and air from mixing and forming an explosive mixture.

2.4. Centralized disposal in large chemical parks

· Application Scenario: Multiple enterprises within a chemical park share a centralized flare system to dispose of small amounts of combustible waste gases that individual enterprises cannot recycle independently (such as process off-gas from fine chemical plants). This eliminates the need for individual flare installations for each enterprise and reduces investment costs.

· Core Requirements: Exhaust gas components vary (different enterprises have different types of waste gases) and are emitted at different times, requiring unified and stable treatment while meeting the park's environmental protection requirements.

· Advantages of high-altitude flares: They accommodate multiple waste gas components, eliminating the need for tailoring to individual enterprises; their high discharge height ensures compliance with park-level air quality standards; and centralized control and maintenance ensure high operational efficiency.

2.5. Offshore oil and gas platform (special scenario)

· Applicable Scenario: Associated gas disposal on offshore drilling and production platforms. Due to limited offshore space and the impossibility of large-scale recovery equipment, associated gas is often burned through high-altitude flaring (some platforms first recover a portion of the associated gas as fuel, then flare the remaining gas).

Core Requirements: Typhoon and wave resistance; compact structure, requiring minimal platform space; remote automatic control (avoiding frequent operator intervention).

· Advantages of high-altitude flares: The flare tower utilizes a compact steel structure, requiring minimal space; key components (such as the igniter and flame detector) are waterproof and salt spray resistant; combustion status can be remotely started and stopped, and monitored via the platform's central control system, making it suitable for unmanned offshore operations.

In summary, the core value of the high-altitude flare lies in "realizing safe combustion + environmentally friendly discharge' of combustible waste gas with a simple and reliable structure." Especially in the "large flow, intermittent, high-risk" industrial waste gas disposal scenario, it is a key equipment that cannot be completely replaced by ground flares or closed flares.