Biomass pellets, as a clean and renewable biomass energy source, in the urban scenario, with its environmental attributes, energy efficiency and resource recycling advantages, is gradually becoming an important alternative to fossil fuels. Its application effect covers multiple dimensions such as environmental protection, energy structure optimization, and urban governance. Specifically, it is manifested in the following scenarios:
1. Urban heating: A transformative tool from "polluting heating" to "clean heating"
Urban winter heating is a "hot spot" for energy consumption and pollutant emissions. Traditional coal heating and small-scale gas boilers are criticized for high emissions and low efficiency. However, the application of biomass pellets effectively solves this problem:
Some cities have transformed small regional heating boilers (such as those in residential areas, schools, and enterprises) into dedicated biomass pellet boilers, replacing coal or heavy oil. During combustion, the sulfur content of biomass pellets is <0.05%, and the nitrogen content is <0.5% (much lower than the 1%-3% sulfur content of coal), and the concentration of smoke dust can be controlled at 30mg/m³ (the national standard is 50mg/m³), significantly reducing PM2.5, sulfur dioxide, and other pollutant emissions.
2. Industrial sector: An "environmental cost optimization" solution for small enterprises
Urban small and medium-sized industrial enterprises (such as food processing, garment printing and dyeing, building material drying, packaging material production, etc.) rely on coal or heavy oil for their small boilers, facing high environmental pressure and fluctuating fuel costs. The application of biomass pellets provides a "low-cost compliant" path for them:
Replacing fossil fuels, reducing environmental protection investment: The ash content after biomass pellet combustion is only 2%-5%, and it can be recycled as potassium fertilizer raw material, without solid waste disposal pressure; its carbon emissions are close to "carbon neutrality" (the released CO₂ is equal to the amount absorbed by plant growth), in line with the national "dual carbon" policy, and enterprises can avoid fines due to excessive carbon emissions. For example, a city's food processing factory replaced a 2-ton coal boiler with a biomass pellet boiler, reducing annual sulfur dioxide emissions by approximately 8 tons and nitrogen oxide emissions by approximately 3 tons, and reducing the cost of environmental compliance by 40%.
Fuel cost is more stable: The price of biomass pellets is less affected by international energy fluctuations (the raw material is local agricultural and forestry waste), and in recent years, the price per ton has remained stable at 800-1200 yuan, while the prices of natural gas and diesel are subject to frequent fluctuations due to international situations, making biomass pellets a "risk-resistant" energy choice for urban small and medium-sized enterprises.
3. Commercial and public scenarios: The "energy card" of green cities
Urban public facilities such as hotels, shopping malls, hospitals, and schools have increasingly highlighted the demand for "green attributes" of energy. Biomass pellets have become an important carrier for them to practice sustainable development:
4. Urban resource recycling
A large amount of organic waste generated in urban daily operations (such as trimmed tree branches for landscaping, park leaves, wood processing scraps, furniture dismantling waste, etc.) is mostly treated by incineration or landfill, which wastes resources and pollutes the environment. The application of biomass pellets forms a "waste - energy" recycling chain:
The application of biomass pellets in urban scenarios is not only "fuel substitution", but also a systematic optimization of urban energy structure, resource recycling, and environmental protection governance:
Environmental aspect: Significantly reduce PM2.5, sulfur dioxide, and nitrogen oxide emissions, helping to improve urban air quality;
Energy aspect: Reduce reliance on fossil energy, increase the proportion of renewable energy, and enhance urban energy security;
Social aspect: Solve the problem of "waste encirclement", create green employment, and promote the transformation of the city to a "circular society". With the advancement of biomass combustion technology, its application cost in urban scenarios will further decrease, making it one of the "standard energy sources" for urban green development.