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Applications of industrial filter cloth and filter mesh - Horizontal vacuum belt filter - Thermal power plant gypsum desulfurization processing
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Detailed Description
- Industrial filter cloth Application of filter screens - Horizontal vacuum belt filter - Flue gas desulfurization gypsum treatment in thermal power plants
Xiamen Dias Industrial Filter Cloth On-site Operating Case Diagram:
Filter type: Horizontal vacuum belt filter
Application industry: Thermal power plant
Material description: Gypsum desulfurization
Industrial filter cloth empowers green power generation —— Efficiently processing desulfurization gypsum in a horizontal vacuum belt filter
In “ Double Carbon ” Under the strategic and clean energy development policies, the environmental protection technology of coal-fired thermal power plants has become an increasingly important focus of the industry. Among them, wet flue gas desulfurization ( FGD ) technology has become the mainstream choice, and the large amount of by-product gypsum (desulfurization gypsum) produced needs effective solid-liquid separation treatment. In order to achieve environmentally compliant emissions and resource utilization, Horizontal vacuum belt filter has become the core equipment for desulfurization gypsum dewatering, and industrial filter cloth, as the most critical filtration medium, directly determines the operating efficiency and stability of the entire dewatering system.
Challenges of desulfurization gypsum dewatering in thermal power plants
In the wet desulfurization process, limestone slurry and SO ₂ in the flue gas react to produce calcium sulfite, which is then oxidized into gypsum. This gypsum is in the form of fine powder, with high water content, high viscosity, and small particle size, making it difficult to dewater, especially when facing 24 continuous operation for hours, high flow rate, and high load in power plant conditions, the requirements for the filtration system are extremely demanding:
- The filter cake needs to reach a lower water content for subsequent transportation or stacking;
- The filtration system must have good corrosion resistance and anti-blocking performance;
- The filter cloth needs to withstand vacuum negative pressure, tension, and long-term wear and tear;
- The overall operating cost should be as controllable as possible, and the maintenance cycle should be long.
Horizontal vacuum belt filter: Tailor-made for gypsum dewatering
Compared with filter presses and centrifuges, ** Horizontal vacuum belt filter ( Horizontal Vacuum Belt Filter, HVBF ) ** has significant advantages in handling desulfurization gypsum:
- Continuous operation ：It adopts automatic feeding, continuous vacuuming, automatic washing, and discharging design to meet the high-load processing needs of thermal power plants;
- Fast filtration speed ：Gypsum quickly forms a filter cake on the filter cloth, and the vacuum suction allows the liquid to be quickly discharged through the filter cloth;
- Multi-stage washing system can be configured ：Effectively reduce the content of residual salts and impurities in the filter cake;
- High filter cake dryness ：Combined with high-efficiency filter cloth, the final water content can be controlled at 8~15% 。
Industrial filter cloth: The core that determines filtration quality
In the entire filtration system, the filter cloth not only undertakes the tasks of material interception and filtrate separation, but also withstands the wear and chemical corrosion caused by continuous operation. Therefore, professionally designed industrial filter cloth has become a key factor affecting the efficiency and maintenance cost of the entire system.
High-performance filter cloth in the treatment of desulfurization gypsum in thermal power plants needs to have:
- Excellent air permeability and retention: Ensure that fine gypsum particles do not flow out with the filtrate, while ensuring vacuum efficiency;
- Good acid and alkali resistance ：Adaptable to limestone slurry, SO ₂ absorbent and neutral or weakly acidic environment of gypsum;
- Wear resistance and dimensional stability ：The filter cloth needs to adapt to continuous operation under tension, and be resistant to stretching and breakage;
- Good cake discharge performance ：The filter cake can smoothly detach from the surface of the filter cloth, reducing adhesion and blockage, and improving operating efficiency;
- Custom processing capabilities ：Such as brushing glue, anti-leakage edge strips, and sewing technology, which helps to achieve optimal equipment matching.
Application practice: Improve environmental protection benefits and reduce operating costs
In many large thermal power plants in China, using high-performance industrial filter cloth with HVBF system to process desulfurization gypsum has become the mainstream process choice. By optimizing filter cloth parameters (such as porosity, thickness, and texture structure) and configuring a reasonable washing section, the water content of the filter cake is significantly reduced, the washing efficiency is improved, and the filter cloth replacement cycle is greatly extended.
A coal-fired power plant project located in East China shows that after introducing professional filter cloth, the water content of its desulfurization gypsum has been reduced from the original 500MW to 18% ，saving hundreds of thousands of yuan in annual transportation and disposal costs, and the filter cloth life has been extended by about 12% ，achieving significant win-win results in environmental protection and economic benefits. 40%，实现了显著的环保和经济效益双赢。
Conclusion
As coal-fired power plants continue their journey towards clean, efficient, and comprehensive resource utilization, advancements in industrial filter cloth technology have become an implicit driving force behind the efficient processing of flue gas desulfurization solid waste. As a core component of horizontal vacuum belt filter systems, high-performance filter cloth not only ensures filtration accuracy but also contributes to operational economy and environmental compliance. “ Unsung Hero ”。
In the future, with the development of materials science and the upgrading of environmental standards, industrial filter cloth will continue to play an irreplaceable role in the power industry and even wider solid-liquid separation fields.
For further filter cloth selection advice or case matching, please contact us:
- 📧 Email: wyl@citius-filter.com
- 📞 WhatsApp: +86-13950107241
- 🌐 Website: www.citius-filter.com
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