Shandong Zhongjie Special Equipment Co., Ltd. specializes in: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment sets; central air conditioning and HVAC equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
Chain biomass boiler is a common type of biomass boiler, with its working principle and process as follows:
Fuel Supply: Biomass fuels (such as wood chips, straw, etc.) are transported to the combustion chamber of the chain boiler through the feeding system.
Fuel combustion process: The fuel is ignited in the combustion chamber, while the chain boiler's chain system begins to operate. Under the movement of the chain, the fuel gradually advances forward and burns simultaneously in the combustion chamber. During the combustion process, the fuel is fully mixed with air, and the heat energy produced by the combustion is transferred to the boiler's water or other working substance.
Flue Gas Emission: The flue gas produced by combustion is channeled through the flue system of the combustion chamber and released into the chimney. During the flue gas emission process, treatment can be conducted using flue gas purification equipment to reduce the emitted particulate matter and gas pollutants.
Heat Recovery: The heat generated from combustion is transferred to water or other working substances through the heat exchanger of the boiler, raising their temperature. After heat recovery, the hot water or steam can be used for heating, hot water supply, or other industrial processes.
Control System: Chain biomass chain boiler usually comes with an automatic control system for monitoring and adjusting parameters such as temperature, pressure, and fuel supply during the combustion process. The control system can automatically adjust according to actual needs to ensure the safe operation and performance of the boiler.
Overall, chain biomass chain boilers gradually feed biomass fuel into the combustion chamber through a chain system for burning. The thermal energy is transferred to water or other working substances via heat exchangers, achieving thermal energy recovery and utilization. These boilers feature high combustion efficiency, strong fuel adaptability, and are widely used in heating, industrial heating, and other fields.

The phenomenon of damaged economizer tubes in biomass boilers may include the following situations:
Pipe Corrosion: Flue gas from biomass combustion contains certain acidic substances, which may lead to corrosion of the economizer pipe. Long-term corrosion can result in the thinning of pipe wall thickness, the formation of holes and cracks.
Pipe Blockage: During the biomass combustion process, flue gas may contain some ash and particulate matter, which may deposit and accumulate in the economizer pipes, leading to blockages. Blockages can affect the flow of flue gas, reducing heat exchange efficiency.
Pipe fatigue: The operating temperature and pressure of biomass boilers fluctuate significantly, leading to long-term thermal expansion and contraction that can cause fatigue damage to economizer pipes, such as cracks and deformation.
In response to the aforementioned issues, the following approaches can be adopted:
Enhanced Corrosion Prevention Measures: Apply corrosion-resistant coatings or use materials resistant to corrosion for the economizer pipes to minimize corrosion occurrences.
Regular cleaning and maintenance: Regularly clean and maintain the economizer to prevent the accumulation of ash and particulates in the pipes, which can lead to blockages. Methods such as mechanical cleaning and water flushing can be employed.
Enhanced Monitoring and Inspection: Regularly inspect economizers, including pipe thickness measurements and crack detection, to promptly identify issues and implement repair measures.
Optimize Operating Parameters: Reasonably adjust the operating parameters of the biomass boiler, such as combustion temperature and air flow, to minimize damage to the economizer.

High evaporation rate of biomass pellet boiler fuel may lead to the following issues:
Incomplete combustion: Fuels with high evaporation fractions release a large amount of steam during combustion, which lowers the combustion temperature and affects the completeness of the combustion. Incomplete combustion leads to heat loss and increased emissions, reducing the boiler's thermal efficiency and environmental performance.
Poor combustion stability: Fuels with high evaporation rates are prone to instability in the combustion process, which may result in flameout and uneven combustion. This can lead to unstable operation of the boiler and affect the stability of hot water supply.
To address issues caused by high-vapor fraction fuels, the following measures can be taken:
Combustion System Optimization: Optimize the combustion system of biomass pellet boilers, covering aspects such as combustion chamber design, combustion air supply, and mixing. Enhance combustion completeness and stability through measures like increasing combustion temperature and oxygen supply.
Combustion Control: Utilizes a combustion control system that monitors and adjusts parameters such as temperature and oxygen content in real-time during the combustion process. Adjusts the supply of combustion air based on actual conditions to maintain stability and completeness of combustion.
Fuel Pretreatment: Pre-treat biomass pellets with high volatility content, such as drying and crushing. By reducing the moisture content and particle size of the fuel, it decreases the volatility content and enhances the efficiency and stability of combustion.
Burn parameter adjustment: Adjust the boiler's burn parameters, such as burn temperature and duration, based on actual conditions. Through reasonable parameter adjustments, make the burn process more suitable for the characteristics of high evaporation and fuel.

During operation, biomass thermal oil heaters are prone to scaling due to the high temperatures and prolonged use of the thermal oil. To prevent the formation of scale, manufacturers typically adopt the following measures:
Select the appropriate thermal oil: Manufacturers choose thermal oils with good thermal stability and antioxidant properties to minimize the formation of scale. The selection of thermal oil should be reasonably matched based on the actual operating conditions and usage requirements.
Regulate oil temperature and flow rate: Manufacturers will control the temperature and flow rate of the heat transfer oil based on its characteristics and operational requirements. Excessive temperature and rapid flow can lead to scale formation, so appropriate adjustments are necessary.
Regular Cleaning and Maintenance: Manufacturers recommend users to regularly clean and maintain the biomass thermal oil heater to remove scale that has formed. Cleaning agents and equipment that can be used during the cleaning process, as well as the scale, will restore the normal operation of the thermal oil heater.
Install Filters and Descaling Devices: Manufacturers may install filters and descaling devices in biomass thermal oil heaters to filter out impurities and scale from the thermal oil. These devices effectively prevent scale formation and extend the service life of the thermal oil heater.
Regular Monitoring and Analysis: Manufacturers may recommend that users regularly monitor and analyze the properties and quality of the thermal oil, to promptly identify any anomalies and take appropriate actions.
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 offer society high-quality, cost-effective products and services!