Shandong Zhongjie Special Equipment's main products include: 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-nitrogenargon tanks, and CO2 tanks; pressure vessel products such as denitration engineering equipment, heat storage and energy storage equipment, and complete chemical equipment sets; central air conditioning and ventilation equipment like 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.
Biomass boiler combustion has the following energy-saving features compared to traditional fuel boilers:
Combustion: The combustion technology and design of biomass boilers enable the combustion of biomass fuel. Compared to traditional fuel boilers, biomass boilers have higher combustion efficiency, allowing for more energy from the fuel to be utilized, thereby reducing energy waste.
Heat Recovery Utilization: Biomass boilers are equipped with a heat recovery system, which can utilize the excess heat generated from combustion for heating systems, improving energy efficiency. Traditional fuel boilers often emit the heat from flue gas, whereas biomass boilers can recover and utilize the heat energy from flue gas, reducing energy waste.
Renewable Energy Utilization: Biomass boilers utilize renewable biomass fuels such as wood chips, straw, and discarded crops, reducing dependence on finite fossil fuel resources. Compared to traditional fuel boilers, biomass boilers have a more sustainable fuel source and can achieve sustainable energy use.
Carbon Emission Reduction: The combustion of biomass fuel produces lower carbon emissions compared to traditional fuel boilers, resulting in reduced carbon emissions from biomass boilers. The use of biomass boilers can decrease greenhouse gas emissions and is more environmentally friendly.
Waste Utilization: Biomass boilers can use agricultural by-products such as crop straw and wood waste as fuel, effectively utilizing waste resources and reducing resource waste. Compared to traditional fuel boilers, biomass boilers have a more diverse fuel source and can achieve effective utilization of waste.

The emission characteristics of biomass fuel boiler flue gases primarily include the following aspects:
Particle Emissions: During the combustion process of biomass fuel boilers, particulate matter is produced, including visible dust and fine particles. The amount of particle emissions is related to fuel characteristics, combustion temperature, and combustion equipment, among other factors. Generally, biomass fuel boilers emit fewer particles than coal boilers, but still require treatment through dust removal equipment.
(SO2) Emissions: The content of SO2 in biomass fuel is low, so the SO2 emissions from biomass fuel boilers are usually low. However, in some cases, such as using waste as fuel, the SO2 emissions may increase. Measures such as combustion control and desulfurization devices can be adopted to control SO2 emissions.
NOx Emissions: The NOx emissions of biomass fuel boilers are related to fuel characteristics, combustion temperature, and combustion equipment factors. Biomass fuel has a higher nitrogen content, which generates a certain amount of NOx during combustion. To control NOx emissions, measures such as low-NOx combustion technology, combustion control, and denitrification devices can be adopted.
Carbon Monoxide (CO) Emissions: The CO emissions from biomass fuel boilers are typically low due to the relatively complete combustion process of biomass fuel. However, in cases of incomplete combustion or unstable burning, the CO emissions may increase. To control CO emissions, it is necessary to ensure that the combustion process is sufficient and stable.
Volatile Organic Compounds (VOCs) Emissions: The VOCs emissions from biomass fuel boilers are related to the fuel characteristics and combustion conditions. Some biomass fuels contain volatile organic compounds.

To enhance the thermal efficiency of biomass boilers, the following measures can be taken:
Optimize the combustion system: Ensure the biomass boiler's combustion system operates effectively with high combustion efficiency. Adoptable combustion technologies, such as fluidized bed combustion and chain grate combustion, can enhance combustion efficiency and thermal energy utilization.
Control fuel quality: Select biomass fuels by volume, such as dry wood chips, straw, etc., and avoid fuels with excessive moisture content. High-moisture fuels consume additional heat for water evaporation, reducing combustion efficiency.
Properly Adjust Fuel Supply: Adjust the fuel supply quantity as per actual needs, avoiding both excess and deficiency. Excess supply leads to fuel wastage, while insufficient supply affects combustion efficiency.
Maintain optimal combustion temperature: Keep the combustion temperature within an appropriate range, avoiding both excessively high and low temperatures. Excessively high temperatures can lead to heat loss in the fuel, while excessively low temperatures can affect combustion efficiency.
Regular Cleaning and Maintenance: Regularly clean the combustion chamber, flue, heat exchanger, and other components of the biomass boiler to keep them clean and unobstructed. Accumulated ash and dirt can affect heat conduction and heat exchange efficiency, reducing thermal efficiency.
Utilize waste heat recovery technology: Employ waste heat recovery units to utilize the excess heat generated from combustion for heating systems or other applications.

Coking in biomass boilers refers to the phenomenon where ash and other impurities from the fuel deposit and form slag inside the furnace during the combustion process. Coking can adversely affect the normal operation and thermal efficiency of biomass boilers. Below are the hazards of coking and corresponding measures:
Reducing thermal efficiency: Coking leads to carbon accumulation on the inner walls of the furnace and the heat exchange area, increasing thermal resistance and decreasing the efficiency of heat conduction, thereby reducing the boiler's thermal efficiency. Lowering thermal efficiency results in energy waste and an increase in operating costs.
Measures: Regularly clean the slag and carbon accumulation inside the furnace, maintain the cleanliness of the furnace inner wall, and enhance heat exchange efficiency.
Impacts on combustion stability: Coking can lead to unevenness during the combustion process, reducing combustion stability and potentially causing incomplete combustion and unstable flames.
Measures: Reasonably adjust combustion parameters, such as combustion temperature and air flow, to maintain stability during the combustion process.
Increased equipment wear and maintenance costs: Coking can lead to carbon accumulation on the inner walls of the furnace and flue pipes, thereby increasing the wear and maintenance costs of the equipment.
Measures: Regularly clean and maintain boiler equipment to prevent the formation of scale and carbon deposits.
Increased environmental pollution: Coking can lead to an increase in pollutant emissions during the combustion process, affecting the environment.
Measures: Rational control of the combustion process to ensure complete and thorough combustion, reducing emissions of pollutants.
In summary, measures to prevent biomass boiler slagging include regular cleaning and maintenance of equipment, reasonable adjustment of combustion parameters, and control
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