How Is The Combustion Efficiency Of Industrial Biomass Boiler?

Driven by global energy transformation and environmental protection policies, biomass energy, as a key component of renewable energy, is being widely used in industrial fields. However, how to improve the combustion efficiency of industrial biomass boilers, reduce energy consumption and achieve higher economic benefits is the core issue that many enterprises pay attention to. As a leading boiler manufacturer in the industry, EPCB boiler is committed to helping enterprises achieve efficient combustion, reduce emissions and enhance overall operational competitiveness by virtue of advanced combustion technology, optimized thermal energy utilization system and intelligent control scheme.

Current Status of Industrial Biomass Boiler Combustion Efficiency

Under the background of global energy structure transformation, industrial biomass boilers have become the focus of many enterprises because of their renewable and low-carbon emission characteristics. In recent years, with the continuous progress of combustion technology, fuel optimization and intelligent control, the combustion efficiency of biomass boilers has been significantly improved.

Technological Development

In the past, the traditional biomass boiler combustion technology was relatively extensive, and the combustion efficiency was usually between 70% and 85%. There were some problems such as insufficient fuel combustion, high emission and high energy consumption. In recent years, with the application of combustion optimization design, intelligent control system and fuel pretreatment technology, the combustion efficiency of industrial biomass boilers has been significantly improved, and some high-efficiency biomass boilers can even achieve more than 90% combustion efficiency, which is outstanding in energy saving and consumption reduction.

Modern biomass boilers greatly improve combustion efficiency by optimizing combustion system, fuel pretreatment and intelligent control. Optimize the combustion chamber structure to enhance the flame stability, and combine the staged air supply and floating combustion technology to make the combustion more complete and the efficiency is as high as 98%. In fuel pretreatment, water content is controlled below 15%, particle size and proportion are optimized, and combustion performance is improved. The intelligent PLC system automatically adjusts the combustion state, provides optimization suggestions by combining remote monitoring of the Internet of Things and big data analysis, and is equipped with an automatic slag discharge and ash removal system to ensure the long-term efficient and stable operation of the boiler.

Application Case

After a large food processing enterprise introduced EPCB high-efficiency biomass boiler, through intelligent combustion control system and optimized combustion air distribution, the boiler combustion efficiency was increased from 78% to 92%, which greatly reduced fuel consumption and carbon emissions. This technological upgrade not only helps enterprises save millions of yuan in fuel costs every year, but also successfully passes the environmental protection review and enhances the green competitiveness of enterprises.

The food processing enterprise takes steam as the key heat energy source in the production process. An ordinary biomass boiler originally used has high operating cost due to insufficient combustion, high emission and frequent maintenance. The enterprise hopes to improve boiler efficiency, reduce fuel consumption and meet environmental protection requirements through technical upgrading.

After comprehensively considering the energy demand of the enterprise, the EPCB boiler team provided a customized optimization scheme for biomass boilers:

• Double grate combustion system is adopted to optimize the distribution of combustion air and ensure the full combustion of fuel.

• Intelligent PLC control system is introduced to automatically adjust fuel supply and air flow to improve combustion efficiency.

• Equipped with high-temperature cyclone dust collector, it can effectively reduce particulate matter emission and meet environmental protection standards.

The management of the enterprise said: "After the introduction of EPCB high-efficiency biomass boiler, not only the combustion efficiency is significantly improved, but also the fuel cost is saved, and the boiler operation is more stable and the environmental protection meets the standards, making our production more sustainable.

Key Technologies For Improving Combustion Efficiency

In industrial production, the combustion efficiency of boiler directly affects the energy utilization rate and operating cost. Efficient combustion can not only reduce fuel consumption, but also reduce emissions and improve the overall economy of equipment. However, there are many factors affecting combustion efficiency, including combustion system design, fuel characteristics and operation control mode. How to optimize the combustion process and achieve higher energy conversion rate? The key technologies to improve combustion efficiency will be discussed from three aspects: combustion system optimization, fuel pretreatment and automatic control.

Optimization of combustion system

Optimizing combustion system is a key measure to improve combustion efficiency. By improving the furnace design and adjusting the furnace size and shape reasonably, the mixing of fuel and air can be enhanced and the combustion adequacy can be improved. At the same time, optimize the distribution of combustion air, and rationally allocate primary air, secondary air and tertiary air, so that fuel particles can form the best combustion environment in the furnace and reduce the heat loss caused by excessive air. By using high-pressure fan and pneumatic conveying technology, fine biomass fuel is injected into the furnace for suspension combustion, which significantly increases the contact area between fuel and oxygen, makes the combustion more complete, and the combustion efficiency can reach above 98%.

Fuel pretreatment

The characteristics of fuel directly affect the combustion effect, especially the combustion performance of biomass fuel is more affected by moisture and particle size than traditional fossil fuel. Drying treatment can reduce the water content of biomass fuel (controlled at ≤15%), increase the combustion temperature and reduce the generation of noncombustible gas. Crushing homogenization ensures that the fuel particle size is moderate (6-10mm), optimizes the combustion rate and reduces the combustion loss. Proportion optimization by mixing different fuels or blending pulverized coal, the combustion is more stable, the calorific value is increased, and the combustion efficiency is enhanced.

Automatic control

Advanced automatic control technology can monitor and adjust the combustion process in real time and improve the combustion efficiency of the boiler. Intelligent combustion control system uses PLC or DCS to automatically adjust air flow, fuel dosage and furnace temperature, and optimizes air excess coefficient (1.2-1.4) through oxygen content sensor to ensure efficient combustion. Variable frequency fan adjustment can adjust the air volume in real time according to the boiler load, reduce energy consumption and improve system efficiency. The intelligent fuel delivery system automatically monitors the combustion state, accurately controls the fuel supply, and ensures the combustion stability and efficient operation.

Challenges and Solutions

In the process of improving combustion efficiency, despite the continuous progress of technology, there are still many challenges, such as differences in fuel characteristics, equipment operation and maintenance and insufficient policy support. These problems not only affect the combustion efficiency of boilers, but also may increase the operating costs of enterprises. Therefore, in view of these challenges, effective technical optimization and management measures must be taken to ensure that the combustion process is more efficient, stable and sustainable.

Fuel diversity

Challenge: Biomass fuels have a wide range of sources, including sawdust, straw, rice husk, coconut husk, fruit husk, etc. The characteristics of each fuel are quite different (such as calorific value, moisture, ash content, volatile matter, fixed carbon content, etc.), which makes it difficult to unify combustion parameters and affects combustion efficiency.

Solution:

· Intelligent combustion control system is adopted to automatically adjust air volume, combustion temperature and feeding speed according to different fuel components, so as to realize accurate combustion.

· Carry out fuel pretreatment (such as drying, crushing and proportioning optimization) to ensure uniform fuel characteristics and improve combustion stability.

· Design a multi-fuel compatible furnace, adapt to different types of biomass fuels, and improve the adaptability of the boiler.

Equipment maintenance

Challenge: Although efficient combustion can improve the energy utilization rate, it may make the heating surface of the boiler bear higher temperature and corrosion risk, which will lead to high-temperature oxidation, corrosion and wear of boiler components (such as grate, combustion chamber and heat exchange surface) and affect the service life of the equipment.

Solution:

· High temperature and corrosion resistant materials are used to improve the durability of key components and prolong the service life of equipment.

· Carry out regular maintenance and overhaul, strengthen the monitoring of furnace, fan and fuel delivery system, and replace wearing parts in time to prevent equipment failure.

· Equipped with online monitoring system, real-time monitoring of boiler operation status, early warning of abnormal situation, reducing maintenance costs.

Policy support

Challenge: The popularization and application of high-efficiency combustion technology requires a lot of capital investment, but it is difficult for some enterprises to adopt it on a large scale due to cost reasons, which affects industrial upgrading. The government is also increasingly strict with boiler emission standards and encourages enterprises to adopt high-efficiency and low-emission boilers.

Solution:

· The government should introduce incentive policies, such as tax incentives, subsidies and carbon trading mechanisms, to encourage enterprises to invest in efficient combustion technologies.

· Formulate emission standards and energy efficiency regulations, and guide enterprises to use more environmentally friendly and efficient combustion equipment, such as adopting low-nitrogen combustion technology to reduce NOx emissions and meet environmental protection standards.

· Promote technology research and development and popularization, support boiler manufacturing enterprises to cooperate with scientific research institutions, develop more efficient and low-emission combustion technologies, and provide technical training to improve the application ability of enterprises.

Conclusion

Improving the combustion efficiency of industrial biomass boilers is not only an effective means for enterprises to reduce costs and enhance competitiveness, but also an important measure to practice the concept of green development and help the goal of carbon neutrality. With leading combustion technology, intelligent control system and excellent service, EPCB boiler provides efficient, environmentally friendly and energy-saving biomass boiler solutions for global industrial enterprises. In the future, with the continuous innovation of technology and the improvement of industry standards, biomass boilers with high efficiency and low emission will play a greater role and contribute to the utilization of clean energy and green development.

If your enterprise is looking for efficient and biomass boiler solutions, please contact EPCB boiler, and we will provide you with professional customized solutions, so that your enterprise can move towards a sustainable development future while saving energy and reducing consumption!