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 the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the American ASME/U2 certification.
In terms of biomass boiler technology, the following three issues need to be addressed with emphasis:
Improved Combustion Efficiency: Biomass fuel has characteristics different from traditional fossil fuels, and during combustion, it tends to produce particles like straw and wood shavings, which lead to lower combustion efficiency. Therefore, it is necessary to develop and improve the combustion system, optimize the combustion process, enhance combustion efficiency, and reduce energy waste.
High-Temperature Corrosion Issues: Ash and elements like chlorine in biomass fuel tend to cause corrosion at high temperatures, damaging the metal components of boilers. To address high-temperature corrosion, it's necessary to develop and apply corrosion-resistant materials, control combustion conditions, and minimize corrosion.
Ash disposal and utilization: Biomass fuel combustion generates a large amount of ash, including waste, ash content, and unburned materials. The handling and disposal of ash is a critical issue, requiring the development and application of ash treatment technologies, including ash recycling, resource utilization, and chemical treatment.
By addressing these three issues, the combustion efficiency of biomass boilers can be further enhanced, corrosion risks reduced, and the effective handling and utilization of ash and slag achieved, thereby 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 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 by 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, the steam in the flue gas condenses into liquid water, forming acidic condensate. This acidic condensate comes into contact with the metal surface, causing corrosion.
Metal Material Selection: The metal materials used in biomass boilers also affect their resistance to corrosion. 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 Special Equipment 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 customized biomass boiler is adaptable to various biomass fuels such as wood chips, straw, and discarded crops, featuring strong fuel versatility. Appropriate fuels can be selected 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.
Our control system: The control system installed in our Zhongjie biomass boiler ensures accurate control and adjustment of parameters such as temperature, pressure, and fuel supply. The control system is equipped with safety protection features like overheat protection and low water level protection, ensuring the safe operation of the boiler.
Low Emission Environmental Protection: The Zhongjie specially equipped biomass boiler utilizes combustion and purification technologies that effectively control emissions during the combustion process, such as particulate matter and nitrogen oxides. It boasts lower carbon dioxide and environmental pollutant emissions.
High reliability and stability: The materials and processes used in Zhongjie's customized biomass boiler ensure excellent durability and stability. Rigorous quality control and testing ensure the boiler's high reliability and long-term stable operation.

To prevent re-burning accidents at the tail end of biomass boilers, the following operational measures can be taken:
Properly adjust combustion parameters: Ensure the stability and completeness of the combustion process, avoiding fuel accumulation and re-burning in the tail section. Reasonably control combustion temperature, air flow, and combustion time, maintaining a smooth and thorough combustion process.
Enhanced combustion chamber mixing and air flow distribution: By optimizing the combustion chamber structure and burn system design, ensure thorough fuel and air mixing, and avoid fuel accumulation and secondary combustion in the tail-end area. Reasonably design the air flow distribution within the combustion chamber to guarantee uniform fuel combustion.
Regular cleaning of the furnace chamber and flue: Regularly clean the ash and carbon buildup inside the furnace chamber to maintain its 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 Unit: Install a flue gas recirculation unit at the rear of the boiler to reignite the exhaust flue gas, enhancing combustion efficiency and reducing the likelihood of secondary combustion at the rear.
Enhanced Operation Monitoring and Maintenance: Conduct regular operation monitoring and maintenance for biomass boilers to promptly identify and address any anomalies. Monitor combustion parameters, flue gas emissions, and temperature indicators 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 operations and safety protocols.
Our company places great emphasis on technological innovation and research and development, boasting one municipal-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc., and are equipped with over 600 pieces of various equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and more. The key products we have developed, such as welding for temperature and pressure vessels, biomass boiler emission reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology scientific and technological innovation projects, key projects in Shandong Province, and Heze City innovation and excellence projects, etc. In total, we have obtained 27 authorized utility model patents, 16 authorized invention patents, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Yajiang Li of Shandong University, has developed deep cryogenic container processing technology, utilizing the internationally recognized plasma arc + wire filling tungsten inert gas arc welding (PAW-GTAW) technology. After provincial-level scientific and technological achievement identification, the technology level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!