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 and 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.
Transforming coal-fired boilers into biomass boilers can offer the following benefits:
Environmentally Friendly: The fuel used in biomass boilers comes from organic matter such as plants, animals, and microorganisms. Compared to coal-fired boilers, biomass boilers emit less carbon dioxide during combustion, reducing greenhouse gas emissions and being more environmentally friendly.
Energy conservation and emission reduction: Biomass boilers employ combustion technology and heat recovery systems to enhance energy efficiency and minimize waste. Additionally, the combustion of biomass fuel produces relatively less ash and pollutants, reducing environmental pollution.
Energy Security: Biomass, as a native renewable energy source, can reduce dependence on imported energy and enhance energy security. In regions with scarce resources, switching to biomass boilers can provide a reliable energy supply.
Economic benefits: Biomass fuel is relatively cost-effective, capable of reducing energy costs. Moreover, the technology and equipment for biomass boilers are continuously evolving and maturing, making them more economically competitive.
Waste Utilization: Transforming coal-fired boilers into biomass boilers can utilize agricultural and forestry by-products such as straw and wood waste, effectively utilizing waste resources and reducing resource waste.
Note that converting a coal-fired boiler to a biomass boiler requires corresponding technical upgrades and equipment updates, including the combustion system, fuel supply system, and flue gas treatment system. The conversion process must consider factors such as fuel characteristics, combustion properties, and equipment compatibility to ensure the stable operation of the biomass boiler after modification and achieve the anticipated energy saving and emission reduction effects. Therefore, it is recommended to seek engineering technical support and consultation during the coal-fired boiler conversion.

Biomass boilers are prone to corrosion at high temperatures, primarily due to the following reasons:
Fuel Composition: Biomass fuel contains certain ash and elements like chlorine, which, during combustion, 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 can 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 corrosion resistance of the metal materials used in biomass boilers also affects the 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 material selection. To mitigate corrosion issues,

To prevent high-temperature corrosion issues in biomass boilers, the following measures can be taken:
Select appropriate materials: Choose corrosion-resistant metal materials for boiler components, such as stainless steel and heat-resistant steel. These materials offer excellent corrosion resistance and can maintain stability in high-temperature and corrosive environments.
Control combustion conditions: Reasonably control the parameters such as temperature, oxygen content, and combustion rate of biomass combustion to avoid excessive temperatures and oxygen levels, thereby reducing corrosion.
Pre-treatment Fuel before Combustion: Pre-treat biomass fuel, including drying, sieving, and decontamination, to reduce ash and salt content in the fuel and minimize corrosion risks.
Regulate acidic substances in flue gas: By adding corrosion inhibitors or flue gas treatment devices, control the content of acidic substances in flue gas, and reduce their corrosive effects on metal surfaces.
Regular Cleaning and Maintenance: Regularly clean the internal soot and dirt in the boiler to maintain its cleanliness. During the cleaning process, use appropriate cleaning agents and tools to remove internal dirt, preventing corrosion.
Regular inspections and maintenance: Regularly inspect and maintain biomass boilers to promptly identify and address corrosion issues. Assignable maintenance personnel can conduct regular checks and maintenance work.

The pressure-setting methods for biomass hot water boilers mainly include the following:
Natural Circulation Pressure Regulation: Natural circulation pressure regulation refers to the circulation of hot water to the heating system through natural convection within the boiler. Under the natural circulation pressure regulation method, there is a significant difference in height between the supply and return water pipes of the boiler, achieving natural circulation through the density difference of the hot water. This method is suitable for small biomass hot water boilers, characterized by simplicity and economy.
Forced Circulation Constant Pressure: This is achieved by using a circulating pump to force hot water through the heating system. Under the forced circulation constant pressure method, the boiler provides sufficient water pressure through the circulating pump to ensure smooth flow of hot water. This method is suitable for large-scale biomass hot water boilers and is characterized by stability.
Micro-positive Pressure Constant Pressure: Micro-positive pressure constant pressure maintains a slight positive pressure in the boiler system, ensuring stable circulation of hot water. Under the micro-positive pressure constant pressure method, the pressure in the boiler system is slightly higher than atmospheric pressure, driving the circulation of hot water through the pressure difference. This method is suitable for situations requiring higher heating temperatures and greater heating distances.
Above are the common methods of setting pressure in biomass hot water boilers. According to specific usage requirements and system design, the appropriate pressure setting method can be chosen to ensure the normal operation and heating effect of the hot water boiler.
Shandong Zhongjie Special Equipment, welcome customers to visit our factory for cooperation discussions.