Facing strict new environmental regulations, a major power plant in Eastern China transformed its operations with Aokai’s CareClean® series filter bags. The plant dramatically reduced particulate emissions from 6.8 mg/m³ to a consistent 1.5 mg/m³ over 18 months, resulting in a reduction of operational resistance (differential pressure) by over 50%. This success ensures compliance and delivers substantial energy savings.
Background
The power industry, particularly in China, has historically been a significant contributor to air pollution, largely due to its reliance on coal for electricity generation. The combustion process inevitably releases harmful emissions into the atmosphere. With increasing pressure from governments, environmental organizations, and the public to combat climate change and reduce pollution, there’s a growing imperative for advanced dust filtration solutions that can help power plants achieve ultra-low emissions.
Challenges
A power plant in Zhejiang Province, China, was operating with an emission outlet concentration of 6.8 mg/m³ and an operational resistance (differential pressure) ranging from 1,200 to 1,500 Pa. This coal-fired power plant faced a critical challenge when, in 2023, local environmental authorities introduced stricter emission standards, mandating levels below 5 mg/m³. Failure to quickly reduce emissions would lead to severe penalties, including potential shutdowns or substantial fines. The conventional PPS ultra-fine filter bags that the plant was using simply couldn’t meet the demanding requirements. Adding to this complexity, the plant was also planning to increase its power generation capacity, raising concerns that this expansion would further exacerbate the already high emission levels and differential pressure.
Solution
To address these critical challenges, the power plant implemented Aokai’s CareClean® series dust filter bags. These innovative filter bags are engineered to fortify filtration media, offering exceptional resistance to high airflow rates and particulate abrasion while significantly improving dust filtration efficiency. The CareClean® series was developed to substantially reduce system-wide operational power consumption, optimizing efficiency for demanding industrial applications. Key benefits include:
- Exceptional resistance to high wind speeds and abrasion, ensuring durability.
- Significantly improved dust filtration efficiency, leading to cleaner air.
- Lower differential pressure, leading to lower energy consumption.
- Extended operational lifespan of filter bags, minimizing replacement frequency and costs.
Results
The implementation of Aokai’s CareClean® series filter bags yielded remarkable results. After replacing all existing filter bags in October 2023, and following six months of operation, on-site inspection confirmed a dramatic performance improvement:
- Emission Level: The emission level plummeted from 6.8 mg/m³ to an impressive 1.5mg/m³, significantly surpassing the new regulatory standard of 5 mg/m³. This level has been consistently maintained for 18 months.
- Operational Resistance (Differential Pressure): The differential pressure saw a drastic reduction, falling from 1,200–1,500 Pa to a stable range of 520–600 Pa. This substantial drop indicates greatly improved airflow and reduced energy consumption for the dust collection system.
- Capacity Expansion Readiness: With significantly lower and stable emissions and differential pressure, the plant is now confidently ready to increase its power generation capacity without concerns about escalating pollution levels or operational strain.
CareClean®’s solution has proven to be a game-changer for the thermal power industry, enabling plants to transition to ultra-low emissions with minimal operational disruption and significant energy savings. For more detailed information about our CareClean® series filter bags, please contact us.
About Aokai Environtec
Aokai Environtec is a leading manufacturer of baghouse filter media, filter bags, and baghouse accessories. Founded in 2004 and headquartered in China, our products are used in a variety of applications and industries, including asphalt plants, cement plants, mining operations, power plants, the metallurgy industry, the renewable energy industry, waste incineration plants, and other industrial facilities. Our mission is to make the world a cleaner and better place by protecting people, the planet, and production from the harmful effects of industrial processes.
