Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, an A2-grade pressure vessel manufacturing license, an A2-grade pressure vessel design license, a B-grade boiler installation license, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as a mechanical and electrical equipment installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the council member of the Shandong Equipment Manufacturing Association. The company has also passed certifications for the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System, and the American ASME/U2 certification.
Biomass boilers emit nitrogen oxides (NOx) during combustion, which are harmful to the environment. Therefore, controlling the NOx emissions from biomass boilers is a significant challenge. Here are some difficulties in NOx control for biomass boilers:
Fuel Characteristics: Biomass fuel composition and characteristics are diverse, containing varying nitrogen content and volatile matter. This makes it challenging to accurately predict and control NOx emissions during the combustion process in biomass boilers.
Combustion Temperature: The generation of NOx is closely related to combustion temperature, with both excessively high and low temperatures increasing NOx formation. The combustion temperature of biomass boilers is influenced by various factors, such as fuel moisture and oxygen supply, making it challenging to control the combustion temperature for effective NOx emissions control.
Proper combustion air supply is essential to control NOx formation, but both excessive or insufficient air supply can affect combustion efficiency and NOx emissions. The combustion air supply for biomass boilers needs to be reasonably adjusted based on fuel characteristics and combustion conditions, which poses certain requirements for operators and control personnel.
Combustion System Design: The design of the combustion system in biomass boilers also has an impact on NOx emissions control. For example, the combustion technology and burner design adopted, such as low NOx combustion technology and combustion chamber structural optimization, can effectively reduce NOx emissions.
Operation and Maintenance: Proper operation and regular maintenance of biomass boilers are crucial for controlling NOx emissions. Reasonable operation and scheduled maintenance ensure the normal operation and combustion of the combustion system, thereby reducing the generation of NOx.
In summary, the challenges in NOx control for biomass boilers mainly include fuel characteristics.

Chain biomass boiler, also known as chain grate biomass boiler, is a special type of biomass boiler. It uses a chain grate as the fuel conveying and combustion device.
The chain grate is composed of a series of interconnected chains, with evenly spaced grate plates distributed along them. Fuel is transported from one end of the furnace to the other through the movement of the chain grate, simultaneously undergoing combustion within the furnace.
The working principle of the chain biomass boiler is as follows: the fuel is evenly distributed on the chain grate, and as the chain moves, the fuel gradually moves towards the outlet of the furnace. Inside the furnace, the fuel is thoroughly mixed with air, releasing thermal energy through combustion reactions. At the same time, the design of the grate plates and the movement of the chain ensure uniform and complete combustion of the fuel.
Chain biomass boiler features include:
Adaptable: Chain grate burners are capable of accommodating various biomass fuels such as wood chips, straw, etc., demonstrating strong fuel adaptability.
High combustion efficiency: The design of the chain grate ensures even and complete combustion of the fuel, enhancing combustion efficiency.
Operation Stable: The movement of the grate in the chain grate boiler is stable, ensuring reliable fuel feeding and combustion, leading to high operational stability of the boiler.
Suitable for Large Capacity Boilers: Chain biomass boilers are designed for large capacity boiler systems, meeting the requirements of the industrial and heating sectors.
Chain biomass boilers have wide applications in the field of biomass energy utilization, effectively utilizing biomass fuel to achieve sustainable energy use.

Control methods for biomass boiler combustion systems can include the following aspects:
Fuel Supply Control: Regulate the supply quantity and speed of biomass fuel to ensure stable fuel supply. This can be achieved by adjusting the feeder's rotation speed or on/off switch.
Air Supply Control: Regulate the air supply during the combustion process to ensure complete fuel combustion. This can be achieved by adjusting the speed of the fan or turning it on/off.
Combustion Temperature Control: Monitors the temperature inside the combustion chamber and adjusts it according to the set value. The combustion temperature can be controlled by adjusting the air supply or fuel supply inside the combustion chamber.
Combustion Process Monitoring: Monitors parameters during the combustion process, such as combustion temperature and chamber pressure, to real-time monitor the combustion status and adjust accordingly based on the monitoring results.
Oxygen Content Control: By monitoring the oxygen content within the combustion chamber and adjusting it according to the set values, complete combustion of the fuel is ensured. This can be achieved by installing an oxygen content sensor and adjusting the air supply.
Dust Removal System Control: Monitors and controls the operation of dust removal equipment, promptly burning off ash in the combustion chamber to ensure combustion efficiency and the normal operation of the system.
Above are some common control methods for biomass boiler combustion systems. Specific control strategies and methods may vary depending on the type of boiler and system design.

Adjusting the combustion of biomass boilers can be done through the following steps:
Determine Combustion Parameters: Based on the design of the biomass boiler and the characteristics of the fuel, establish appropriate combustion parameters, including combustion temperature, oxygen supply, and fuel feed rate.
Adjust combustion temperature: Adjust the combustion temperature based on the fuel characteristics and combustion requirements. Excessive combustion temperature may lead to overburning of the fuel and energy waste, while too low combustion temperature may result in incomplete combustion and increased emissions.
Control Oxygen Supply: Adjust the oxygen supply based on the oxygen content during the combustion process. Excessive oxygen supply may result in incomplete fuel combustion and energy waste, while insufficient oxygen supply can lead to inadequate combustion and increased emissions.
Adjust fuel supply rate: Adjust the fuel supply rate based on thermal load and fuel characteristics. Excessive fuel supply rate may lead to overburning and energy waste, while a low fuel supply rate may result in incomplete combustion and insufficient heating.
Monitor and Adjust: By monitoring critical parameters during the combustion process, such as combustion temperature, oxygen content, and flue gas composition, adjust combustion parameters promptly to ensure stability and efficiency.
Note: Adjusting the combustion of biomass boilers requires consideration of specific kettle
Zhongjie Special Equipment upholds the grand vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We commit to society with high-quality, cost-effective products and services!