Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City. With a registered capital of 50 million yuan and total assets of 500 million yuan, the company has seven business centers: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters. The main workshop spans 83,000 square meters. It currently employs 710 people, including 247 engineers and technicians and 82 intermediate-level technical personnel. In December 2016, it was recognized as a "High-tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Department of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province," and in August 2022, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
To reduce the emissions of nitrogen oxides (NOx) from biomass boilers, the following measures can be taken:
Combustion Control Optimization: By optimizing the combustion process, controlling the combustion temperature and oxygen supply, and reducing NOx emissions. Adjusting the burner's structure and parameters can make the combustion process more thorough and even, minimizing the formation of localized high-temperature areas.
Combustion Chamber Design Enhancement: Improved combustion chamber design for biomass boilers, increasing mixing and residence time within the chamber to ensure more thorough fuel and air mixture, thereby reducing NOx emissions.
SNCR Technology: Selective Non-Catalytic Reduction (SNCR) technology involves adding a reductant, such as urea, during the combustion process to react with NOx and convert it into nitrogen and water. This technology can effectively reduce NOx emissions, but requires system design and adjustments based on specific conditions.
SCR Technology: Selective Catalytic Reduction (SCR) technology is a NOx control method that involves adding a catalyst to flue gas, such as, to react with NOx and convert it into nitrogen and water. SCR technology can achieve high NOx removal efficiency, but it requires significant investment and operational costs.
Flue Gas Recirculation (FGR): Flue Gas Recirculation technology recycles a portion of flue gas back into the combustion process, lowering combustion temperatures and reducing NOx emissions. This technique allows for NOx control by adjusting the recirculation ratio.
Regular maintenance and cleaning: Regular maintenance of biomass boilers

Biomass boilers typically require auxiliary equipment to ensure their proper operation and utilization of biomass fuel. The following are some common auxiliary equipment:
Feeding System: Used for delivering biomass fuel to the combustion chamber of a boiler. The feeding system usually includes conveyer belts, screw conveyors, and vibratory feeders, among other equipment, which can be selected based on the fuel characteristics and boiler requirements.
Combustion System: Used for burning biomass fuel. The combustion system includes a combustion chamber, burners, fans, and other equipment to ensure thorough mixing of fuel and air and control of the combustion process.
Smoke Purification Equipment: Used for treating smoke produced by combustion, reducing emissions of particulate matter and gas pollutants. Common smoke purification equipment includes dust collectors, desulfurization devices, denitrification devices, etc., which can be selected based on emission standards and environmental protection requirements.
Heat Exchanger: Utilized to transfer the thermal energy produced by combustion to water or other working substances, enabling the recovery and utilization of thermal energy. Heat exchangers typically include pipe-type heat exchangers, flue gas waste heat boilers, etc., which can enhance energy utilization efficiency.
Control System: Monitors and controls operational parameters of biomass boilers, including temperature, pressure, and fuel supply. The control system enables automatic adjustment and protection functions to ensure safe and efficient boiler operation.
Equipment: Includes water supply systems, waste discharge systems, pressure vessels, fuel storage equipment, etc. These devices are used to provide water for boilers, treat wastewater, store fuel, and ensure the normal operation of the boiler.
Here are some common auxiliary equipment for biomass boilers; the specific configuration and selection can be determined based on actual needs and project requirements.

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 consists 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, while simultaneously combusting within the furnace.
The working principle of the chain biomass boiler is: the fuel is evenly distributed on the chain grate, and as the chain moves, the fuel gradually moves towards the outlet of the furnace chamber. Inside the furnace, the fuel is thoroughly mixed with air, releasing heat 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.
The biomass boiler chain features the following characteristics:
Adaptable: Chain grate burners are capable of utilizing various biomass fuels such as sawdust and straw, 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 chain grate movement is stable, ensuring reliable fuel feeding and combustion process, with high boiler operation stability.
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, allowing for the efficient use of biomass fuel and achieving sustainable energy utilization.

The extinguishing process and maintenance methods for the fully automatic biomass boiler are as follows:
Extinguishing Process:
Cease fuel supply: Prior to extinguishing the biomass boiler, first stop the fuel supply and ensure the fuel supply pipeline is closed.
Turn off the burner: Switch the burner's switch or the extinguish button on the control panel to the off position to stop the burner from operating.
Wait for Cooling: Allow the boiler to cool to a safe temperature, which usually takes some time. Do not operate during this period to prevent accidents.
Shut off Power: After the boiler has completely cooled down, turn off the power switch of the boiler to ensure it is in a power-off state.
Maintenance Instructions:
Clean combustion chamber: Regularly clean the combustion chamber to remove ash and dirt generated during the combustion process. Use appropriate tools and cleaning agents to ensure the chamber remains clear and clean.
Heat Exchanger Cleaning: Regularly clean heat exchangers, particularly those on the flue side. During the combustion process, flue gases may contain particulates and slag, which can adhere to the heat exchanger surface, affecting heat transfer efficiency. Appropriate cleaning methods, such as mechanical or chemical cleaning, can reduce the accumulation of dirt.
Inspect and Replace Critical Components: Regularly inspect and replace critical components such as burners, valves, and sensors. Ensure these components operate normally and maintain performance, to avoid malfunctions and safety hazards.
Water Treatment: Proper water treatment for boiler feedwater to prevent impurities and sediments from settling inside the boiler. Methods such as water softening, deoxygenation, and scale removal can be employed to maintain the cleanliness and stability of the supply.
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