Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 business centers: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 people, including 247 engineers and technicians and 82 intermediate-level technicians. In December 2016, it was recognized as a "High-tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Biomass hot water boilers can meet environmental regulations under certain conditions. They utilize renewable biomass fuels such as wood chips, straw, and waste materials, emitting less carbon dioxide during combustion compared to traditional fossil fuels, thus having a smaller environmental impact.
However, to ensure that biomass hot water boilers comply with environmental regulations, the following conditions must be met:
High combustion efficiency: The biomass hot water boiler should be equipped with a combustion system and heat exchanger to ensure complete combustion of the fuel and efficient use of thermal energy, reducing fuel waste and the generation of emissions.
Flue Gas Purification Equipment: Biomass hot water boilers should be equipped with effective flue gas purification equipment, such as bag dust collectors and desulfurization devices, capable of effectively capturing and purifying particulates and pollutants in the flue gas, reducing atmospheric pollution.
Compliance Emissions: The flue gas emissions of biomass hot water boilers must comply with local environmental protection laws and standards, including limits on the emissions of pollutants such as particulate matter, nitrogen oxides, etc.
Regular Maintenance: Biomass hot water boilers require regular maintenance to keep the equipment in good condition, ensuring stable combustion efficiency and emission performance.
Fuel Selection and Supply: Choose appropriate biomass fuel and ensure its source is legal and sustainable. Avoid using waste containing harmful substances as fuel to prevent impact on the environment and human health.
It's important to note that while biomass hot water boilers are relatively eco-friendly, they still need to be assessed and monitored based on specific circumstances to ensure compliance with environmental regulations. Additionally, environmental protection regulations may vary by region, so users should adhere to local environmental laws and standards.
Reducing the NOx emissions from biomass boilers can be achieved through the following measures:
Combustion Control Technology: Utilizes advanced combustion control techniques such as low nitrogen combustion technology. By optimizing the combustion process and controlling the combustion temperature and oxygen concentration, the formation of nitrogen oxides is reduced. Methods like staged combustion and optimized combustion chamber design can be employed to lower combustion temperatures and extend combustion times, further decreasing nitrogen oxide emissions.
SNCR Technology: Selective Non-Catalytic Reduction (SNCR) technology involves injecting reductants, such as urea solution, into the combustion process, which react with nitrogen oxides to convert them into nitrogen and water. This technique reduces the formation and emissions of nitrogen oxides during combustion.
SCR Technology: Selective Catalytic Reduction (SCR) technology is a nitrogen oxide control technique. By injecting urea solution into flue gas and through the action of a catalyst, nitrogen oxides are converted into nitrogen and water. SCR technology can achieve nitrogen oxide removal at lower temperatures and is suitable for large biomass boilers.
Flue Gas Recirculation (FGR): The Flue Gas Recirculation (FGR) technology recycles a portion of flue gas back into the boiler combustion chamber, reducing combustion temperature and oxygen concentration, thereby decreasing the formation of nitrogen oxides. This technique can control nitrogen oxide emissions by adjusting the recirculation ratio.
Fuel Selection and Pretreatment: Opting for low nitrogen fuels, such as low nitrogen biomass fuel, can reduce the formation of nitrogen oxides. Additionally, for biomass fuels with high nitrogen content, pretreatment measures like drying or gasification can be employed to decrease the generation of nitrogen oxides during combustion.
Regular Maintenance and Cleaning: Regularly maintain and clean biomass boilers to ensure the cleanliness and proper operation of components such as burners and heat exchangers. Cleaning the combustion chamber and heat exchangers can reduce the accumulation of dirt, enhance thermal transfer efficiency, and decrease nitrogen oxide emissions.
By comprehensively implementing the aforementioned measures, it can effectively reduce the emissions of nitrogen oxides from biomass boilers, achieving the goals of environmental protection and energy conservation. The specific measures to be chosen should be based on the characteristics of the boiler, its operating conditions, and emission requirements.
Biomass boilers may experience issues with ash accumulation and slagging during prolonged operation. These problems can affect the boiler's combustion efficiency and safety. Here are methods to address ash accumulation and slagging in biomass boilers:
Regular Cleaning: Regularly cleaning the ash and carbon buildup inside the boiler is crucial for preventing slagging and fouling. A cleaning schedule can be established based on the boiler's usage, covering areas such as the combustion chamber, flue, and heat exchanger. Appropriate tools and cleaning agents should be used during the cleaning process to ensure the removal of ash and carbon.
Adjust combustion parameters: Properly adjusting the combustion parameters of a biomass boiler can reduce the occurrence of ash accumulation and slagging. For instance, adjusting combustion temperature, oxygen supply, and combustion duration can enhance combustion efficiency and minimize ash and slag production.
Utilize additives: During biomass combustion, special additives such as ash inhibitor and slagging inhibitor can be added. These additives can reduce the formation of ash and carbon buildup, enhancing the boiler's cleanliness and combustion efficiency. The use of additives should be based on specific circumstances and manufacturer recommendations.
Regular Inspections and Maintenance: Regularly inspect and maintain all components of the biomass boiler, including burners, fans, flues, and heat exchangers, to promptly identify and address issues like ash accumulation and slagging. During the inspection, you can clear blocked parts and repair damaged ones to ensure the boiler operates smoothly.
Be mindful that addressing biomass boiler ash and slagging issues requires a case-by-case approach. Consult with boiler maintenance personnel or manufacturers for more detailed and accurate advice. Additionally, regular cleaning and maintenance are crucial measures for preventing ash and slagging problems.
Possible reasons for the black smoke produced by biomass boiler combustion may include:
Incomplete Combustion: Inadequate oxygen supply or insufficient combustion temperature in biomass fuel can lead to incomplete combustion, producing a large amount of smoke and black smoke. This may be caused by poor combustion chamber ventilation, poor fuel quality, or incorrect setting of combustion parameters.
High moisture content: Excessive water in biomass fuel leads to the evaporation of a large amount of steam during combustion, lowering the combustion temperature and thereby affecting combustion efficiency, resulting in black smoke.
Fuel Quality Issue: If biomass fuel contains impurities, ash, or uneven moisture content, it can affect the combustion process, leading to incomplete combustion and the production of black smoke.
Combustion Equipment Issues: If there are malfunctions or wear in the combustion equipment of biomass boilers, such as slagging in the combustion chamber or clogging of the burners, it can affect the combustion efficiency and lead to the production of black smoke.
To reduce the emission of black smoke, the following measures can be taken:
Ensure adequate oxygen supply: Adjust the ventilation system of the combustion equipment to ensure sufficient oxygen supply, enhance combustion efficiency, and reduce the production of black smoke.
Control combustion temperature: Adjust combustion parameters, such as combustion temperature and time, to ensure complete fuel combustion and reduce the production of black smoke.
Optimize fuel quality: Select biomass fuel in appropriate quantities, ensuring uniformity in dryness and quality, reducing moisture content and impurities, and enhancing combustion efficiency.
Regular Maintenance: Regularly maintain and service biomass boilers to clean the combustion chamber, burners, and other components, ensuring the equipment operates smoothly and reducing the emission of black smoke.
Install Pollutant Control Equipment: As required, install flue gas purification equipment such as dust collectors and desulfurization devices, effectively removing particles generated during the combustion process.
Shandong Zhongjie Special Equipment, welcome customers to visit our factory for business discussions.
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