Petrochemical burners refer to burners for the petrochemical industry. As one of the key equipment in petrochemical plants, petrochemical burners are widely used in refining, chemical production, gas treatment and other processes for heating, burning exhaust gases, or providing thermal energy for various chemical reactions. The design and performance of petrochemical burners directly affect the efficiency, safety, and environmental performance of petrochemical processes. Therefore, choosing the appropriate burner is very important, involving multiple factors such as combustion efficiency, fuel type, exhaust emissions, and corrosion resistance.
As an expert in petrochemical incineration equipment with decades of experience, Ruichang is willing to provide more users with detailed explanations of petrochemical burners, including classification, application fields, technical characteristics, working principles, and the most concerned issues for beginners in the industry. Let’s start with how to choose a high-quality petrochemical burner.
Types of petrochemical burners
Petrochemical burners can be roughly divided into the following categories based on different fuels, application scenarios, and technical characteristics:
Gas burner
Natural gas, refinery gas, or other gases are used as fuel. This type of burner has high combustion efficiency and low pollutant emissions, and is suitable for heating equipment in most refining and chemical production.
Liquid burner
Fuel, heavy oil, or other liquid fuels are typically used in the heating furnace of distillation equipment. Liquid burners require fuel pretreatment, including atomization and preheating, to ensure sufficient combustion and improve thermal efficiency.
Dual fuel burner
It can switch between different fuels and is commonly used in situations where both gas and liquid fuels can be used simultaneously. They provide more flexibility to choose the appropriate fuel based on economic considerations during fuel price fluctuations.
Exhaust gas burner
Used to treat exhaust gases containing combustible components generated in petrochemical production. This type of burner needs to consider the possible corrosive components and pollutants in the exhaust gas, and emphasize safety and environmental protection requirements in its design.
low nox burner
Modern petrochemical enterprises have increasingly high requirements for environmental protection. Low NOx burners reduce nitrogen oxide (NOx) emissions by optimizing the combustion process and lowering the combustion temperature to meet environmental regulations.
The main applications of petrochemical burners
Heating furnace
Heating furnaces are the most common application scenarios in oil refining and chemical production. The burner converts fuel into heat energy, which is used to heat the reactants or products to maintain the temperature required for the process reaction. For example, in the process of crude oil distillation, it is necessary to preheat the crude oil to several hundred degrees Celsius through a heating furnace to help separate different distillate products.
Cracking furnace
Cracking furnace is an important device for producing basic chemical raw materials such as ethylene, usually using natural gas or naphtha as fuel. The burner must be able to generate high temperatures (800 ° C-1100 ° C) and ensure uniform temperature distribution to improve cracking efficiency and reduce coke deposition.
Incinerator
It is used for treating waste gas and liquid in petrochemical production, oxidizing harmful substances into harmless gases such as CO ₂ and water. This type of burner requires high temperature and sufficient oxygen supply, as well as high-temperature corrosion resistance.
Boiler
Petrochemical plants use boilers to generate steam for various process heating needs. The burner is the core component of the boiler, ensuring efficient combustion of fuel to generate sufficient steam pressure. Commonly used fuels are natural gas or heavy oil.
Basic structure of petrochemical burner
Petrochemical burners are complex thermal equipment specifically designed to convert fuel into thermal energy, providing energy for heating, reactions, steam generation, and other processes in production. The design and structure of the burner are crucial to ensure efficient, safe, and low-emission combustion.
The burner structure used in the petrochemical industry is complex and usually consists of the following main components:
- Burning head: the combustion head is the core component of the burner, responsible for guiding the mixing of fuel and air and generating stable flames. The design of the combustion head directly affects the combustion efficiency, flame shape, and pollutant emissions during the combustion process. The combustion head is generally made of high-temperature resistant materials to withstand thermal shock in high-temperature environments.
- Fuel supply system: this system is used to transport fuels (such as natural gas, light oil, heavy oil, etc.) to the burner. The fuel supply system includes fuel pipelines, valves, regulating devices, etc. Different burners may be suitable for different types of fuels, and multi fuel burners are commonly used in the petrochemical industry, which can automatically switch fuels according to operating conditions.
- Air supply system: the air supply system is an important component of the burner, responsible for providing sufficient oxygen for combustion. It usually consists of a fan, air duct, and regulating valve to regulate air flow. Modern burners often combine pre mixing technology to thoroughly mix air and fuel before entering the combustion head, in order to improve combustion efficiency.
- ignition system: the ignition system is used to initiate the combustion process and typically includes components such as ignition electrodes and ignition transformers. The ignition electrode will generate sparks to ignite the premixed fuel and air, and then the flame will spread, and the entire combustion process will begin. Modern burners are often equipped with automatic ignition and flame monitoring functions to ensure the safety and stability of ignition.
- Control system: the control system is the “brain” of the burner, which can automatically adjust the ratio of fuel to air, combustion temperature, and combustion intensity. Advanced control systems monitor parameters such as temperature, pressure, and oxygen content to ensure optimal operation of the burner and reduce pollutant emissions during combustion. In addition, the control system also integrates safety protection functions, which automatically shut down the burner in case of abnormal situations such as fuel interruption or flame extinguishing.
- Flame monitoring system: flame detectors are used to detect the presence and stability of flames, preventing accidental extinguishing of flames and posing safety hazards. Common flame monitoring devices include ultraviolet sensors and photoelectric detectors, which can monitor flames in real time and trigger alarms or shutdown programs in case of abnormalities.
- Cooling system: some high-temperature burners, especially under high loads or special operating conditions, may be equipped with cooling systems. The cooling system usually adopts water cooling or air cooling methods to protect the key components of the burner from overheating damage.
Technical parameters for petrochemical burners
Here are some professional technical parameters for petrochemical burners to help you better understand them.
| Technical Parameter | Description |
| Fuel Type | Applicable fuel types (e.g., natural gas, liquefied petroleum gas, heavy oil, gas) |
| Fuel Calorific Value | Calorific value of the fuel (higher heating value and lower heating value), influencing the design and efficiency of the burner |
| Rated Power | Rated power of the burner, typically expressed in kilowatts (kW) or megawatts (MW) |
| Combustion Efficiency | Thermal efficiency expressed as a percentage, with high-efficiency burners achieving over 90% |
| Unburned Loss | Indicates the degree of unburned loss, affecting overall energy consumption and environmental performance |
| Combustion Mode | Types of combustion (e.g., premixed combustion, staged combustion) to reduce NOx emissions |
| Flame Shape | Type of flame (e.g., stable flame, jet flame), influencing heat transfer and operational flexibility |
| Flame Temperature | Temperature of the flame produced during combustion, typically ranging from 900°C to 1800°C |
| NOx Emissions | Level of nitrogen oxides emissions, which must comply with local environmental regulations (e.g., mg/Nm³) |
| Emission Reduction Technology | Low NOx combustion technologies (e.g., staged combustion, fuel optimization) |
| Airflow Rate | Required airflow rate for the burner (Nm³/h), directly related to fuel quantity and combustion efficiency |
| Fan Type | Type of fan used (centrifugal fan, axial fan), affecting the stability of air supply |
| Construction Materials | High-temperature resistant and insulating materials to ensure suitability for harsh operating environments |
| Control System | Level of automation (e.g., PID control, PLC control) and monitoring functions |
| Safety Features | Safety valve settings and fault alarm systems to ensure safe operation of the burner under abnormal conditions |
10 tips you should know before buying petrochemical burners
Choosing a high-quality petrochemical burner is an important step in ensuring production efficiency, safety, and environmental compliance. Here are some key factors and suggestions to help you choose the right burner:
1. Fuel compatibility
- Fuel types: According to the International Energy Agency (IEA), global natural gas consumption is expected to reach approximately 4.06 trillion cubic meters in 2023, indicating its widespread use in industry.
- Heating value characteristics: The low heating value of natural gas is about 32 MJ/Nm ³, while the low heating value of heavy oil can reach 36 MJ/Nm ³. Choosing a suitable burner can improve the utilization rate of heating value.
2. Combustion efficiency
- Thermal efficiency: The thermal efficiency of high-efficiency burners can usually reach 90% -95%. For example, some low nitrogen burners have an efficiency of up to 95%, which can significantly reduce energy consumption.
- Unburned loss: Ideally, unburned loss should be less than 2% (by mass percentage). If it exceeds this standard, it will significantly increase operating costs.
3. Emission standards
- Environmental compliance: For example, according to China’s “Emission Standards for Air Pollutants” (GB 13223-2011), the emission limit for nitrogen oxides is usually 50-200 mg/Nm ³, depending on the type and application of the burner.
- Emission reduction technology: Low nitrogen burners (such as staged combustion) can reduce NOx emissions by 30% -50%, effectively meeting environmental regulations.
4. Control system
- Automation level: Modern burners are usually equipped with PLC control systems, which can achieve automated monitoring and real-time adjustment of mixing ratios. Compared to traditional burners, automated systems can improve operational efficiency by about 20%.
- Monitoring function: High performance burners are typically equipped with up to 5 sensors, including temperature, pressure, oxygen concentration, etc., to ensure safety and efficiency.
5. Structure and Materials
- High-temperature resistance: High-quality burners typically use high-temperature resistant alloy materials, which can withstand working temperatures from 800 ° C to 1200 ° C and extend their service life.
- Insulation design: Good insulation materials can reduce heat loss by up to 15% -20% and improve the overall thermal efficiency of the system.
6. Security
- Safety protection function: According to industry standards, burners should have at least two types of safety protection devices, such as flame monitoring and gas leakage alarm.
- Fault handling mechanism: Advanced burners should be able to automatically shut down in the event of a fault, with a response time of less than 5 seconds to ensure safe operation.
7. Manufacturers and Services
- Brand reputation: Products from well-known brands in the market, such as Siemens and Honeywell, usually have a high market share (about 30% -50%) and provide comprehensive after-sales service.
- Technical support: Choose manufacturers that provide 24/7 technical support to ensure timely assistance in critical moments.
8. Cost effectiveness
- Initial investment and long-term operating costs: The initial investment ranges from $10000 to $100000, depending on the type and application of the burner. Long term operating costs should be evaluated for fuel and maintenance expenses, and high-quality burners can save 10% -20% of energy costs within 5 years.
- Energy saving potential: After adopting high-efficiency burners, energy efficiency is improved by about 15% -25%, reducing overall production costs.
9. User feedback and case studies
- User feedback: A survey shows that about 80% of users believe that high-efficiency burners significantly reduce energy consumption and improve production efficiency.
- Successful case: After applying a new low nitrogen burner, a petrochemical enterprise reduced NOx emissions by 40% and saved 15% of fuel costs.
10. Customized requirements
Special requirements: For specific processes (such as high-temperature reactions), choose customized burners that can withstand temperatures exceeding 1200 ° C to meet production needs.
Through the above factors, you can comprehensively evaluate and select a high-quality petrochemical burner to ensure its efficiency, safety, and environmental friendliness in production. If you have more specific questions or need further information, please feel free to contact us, and Ruichang’s experts will help you answer them one by one!
