Shandong Zhongjie Special Equipment Co., Ltd. (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/GC2-grade pressure pipeline installation licenses, as well as qualifications for the installation and contracting of electromechanical equipment. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and a 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.
In the technical aspect of biomass boilers, the following three issues need to be addressed with emphasis:
Improved Combustion Efficiency: Biomass fuel has characteristics different from traditional fossil fuels, which tend to produce particulate matter like straw and wood shavings during combustion, leading to lower efficiency. Therefore, research and improvement of the combustion system, optimization of the combustion process, and enhancement of combustion efficiency are necessary to reduce energy waste.
High-Temperature Corrosion Issue: Ash and elements like chlorine in biomass fuel are prone to cause corrosion at high temperatures, damaging the metal components of boilers. To address the high-temperature corrosion problem, the development and application of corrosion-resistant materials, as well as controlling the combustion conditions, are necessary to minimize corrosion.
Ash handling and utilization: Biomass fuel combustion generates a large amount of ash, including waste, ash content, and unburned material. The handling and disposal of ash is a critical issue, requiring the development and application of ash handling technologies, including ash recycling, resource utilization, and chemical treatment.
By addressing these three issues, the combustion efficiency of biomass boilers can be further enhanced, the risk of corrosion reduced, and the effective handling and utilization of ash and slag achieved, promoting the sustainable development of biomass energy.

Biomass boilers are prone to corrosion at high temperatures, primarily due to the following factors:
Fuel Composition: Biomass fuel contains certain ash and elements such as chlorine, which, when burned, form corrosive substances under high temperatures, such as chlorides and salts. These substances react with the metal surface, leading to metal corrosion.
Combustion Conditions: Factors such as combustion temperature, oxygen content, and combustion rate during biomass combustion can affect corrosion. High temperatures, excessive oxygen, and rapid combustion rates can accelerate corrosion.
Smoke Composition: The smoke produced from biomass combustion contains certain acidic substances, such as, etc. These acidic substances will react with the metal surface, causing corrosion.
Flue Gas Condensation: During the flue gas condensation process of biomass boilers, water vapor in the flue gas condenses into liquid water, forming acidic condensate. This acidic condensate comes into contact with the metal surface, causing corrosion.
Material Selection for Metal: The resistance to corrosion of the metal materials used in biomass boilers also affects their corrosion resistance. Different metal materials exhibit varying corrosion resistance to different corrosive mediums.
In summary, the primary causes of high-temperature corrosion in biomass boilers include fuel composition, combustion conditions, flue gas composition, flue gas condensation, and the selection of metal materials. To alleviate corrosion issues,

The Zhongjie Customized Biomass Boiler Body boasts the following technical advantages:
Our combustion technology: The Zhongjie biomass boiler adopts advanced combustion technologies such as fluidized bed combustion and chain grate combustion, enabling the combustion of biomass fuel. It boasts high combustion efficiency and high thermal energy utilization, reducing energy waste.
Multiple Fuel Compatibility: The Zhongjie biomass boiler is capable of adapting to various biomass fuels such as wood chips, straw, and waste crops, demonstrating strong fuel versatility. Suitable fuels can be chosen based on actual conditions to achieve diversified energy utilization.
Heat Exchanger Design: The heat exchangers for Zhongjie's biomass boiler installations are designed to maximize the utilization of flue gas heat energy, enhancing thermal efficiency. The material and structural design of the heat exchangers have been optimized for optimal heat conduction and exchange.
The control system: The control system equipped with our Zhongjie biomass boiler is capable of precise control and adjustment of parameters such as temperature, pressure, and fuel supply. The control system features safety protection functions like overheat protection and low water level protection, ensuring the safe operation of the boiler.
Low Emission Environmental Protection: The Zhongjie customized biomass boiler utilizes advanced combustion and purification technologies to effectively control emissions generated during the combustion process, such as particulates and nitrogen oxides. It boasts lower carbon and environmental pollutant emissions.
High Reliability and Stability: The materials and processes used in Zhongjie's customized biomass boiler are of excellent durability and stability. Rigorous quality control and testing ensure the boiler's high reliability and long-term stable operation.

To prevent rear combustion accidents in biomass boiler exhaust, the following operational measures can be taken:
Optimize combustion parameters: Ensure the stability and completeness of the combustion process, preventing fuel accumulation and re-combustion in the tail section. Reasonably control parameters such as combustion temperature, air flow, and combustion time to maintain a smooth and thorough combustion process.
Enhance mixing and air flow distribution within the furnace: By optimizing the furnace structure and combustion system design, ensure thorough mixing of fuel and air, and avoid fuel accumulation and re-burning in the tail-end area. Reasonably design the air flow distribution within the furnace to ensure uniform combustion of the fuel.
Regularly clean the furnace chamber and flue: Regularly remove ash and carbon deposits from the furnace chamber to maintain cleanliness. Clean the flue and waste heat recovery equipment to prevent particle accumulation and ash in the flue gases, reducing the risk of re-burning.
Install Flue Gas Recirculation (FGR) Unit: Install a FGR unit at the boiler tail section to reignite the exhaust flue gas, enhancing combustion efficiency, and reducing the likelihood of secondary combustion at the tail section.
Enhance operational monitoring and maintenance: Regularly monitor and maintain biomass boilers to promptly identify and address any anomalies. Monitor combustion parameters, flue gas emissions, and temperature to ensure the boiler operates normally.
Ensure comprehensive safety training and operational procedures: Conduct safety training for operators to enhance their understanding of biomass boiler operation and safety.
Our company highly values technological innovation and R&D, boasting one municipal enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. Equipped with over 600 instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, and plasma welding machines, we have developed key products such as welding for temperature and pressure vessels, biomass boiler emissions reduction, and waste heat utilization. These technologies have successively been shortlisted for multiple Shandong Province Ministry of Industry and Information Technology Science and Technology Innovation projects, Shandong Province key projects, and Heze City innovation and excellence projects. We have accumulated 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industrial standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Yijiang Li of Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + filler wire argon arc combination welding (PAW-GTAW) technique. After being evaluated by the provincial science and technology achievements, our technology level in deep cryogenic container manufacturing has reached an international standard. Choose Zhongjietech, and let's create brilliance together!