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Industrial filter cloth and filter mesh applications - horizontal vacuum belt filter - thermal power plant industry, gypsum treatment
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Detailed Description
- Industrial filter cloth Application of filter cloth - Horizontal Vacuum Belt Filter - Thermal Power Plant Industry, Gypsum Treatment
Filter type: Horizontal vacuum belt filter
Application industry: Thermal power plant
Material description: Gypsum
Application of industrial filter cloth in gypsum treatment in thermal power plants
—— The key role of horizontal vacuum belt filter in desulfurization gypsum solid-liquid separation
In modern thermal power plants, desulfurization gypsum The treatment and disposal of has become an important environmental issue. Gypsum is flue gas desulfurization process （ FGD ）A by-product of the process, widely used in cement, building materials and other industries. However, gypsum treatment involves a large amount of solid-liquid separation, requiring an efficient filtration system to reduce water pollution and resource waste.
Horizontal vacuum belt filter （ Horizontal Vacuum Belt Filter ，简称 HVBF ）because of its High-efficiency, continuous solid-liquid separation characteristics ，has become one of the core equipment for gypsum treatment in thermal power plants. In order to ensure the long-term stable operation of the equipment and improve the separation efficiency, suitable industrial filter cloth (especially High wear resistance, acid and alkali resistance, high load filter cloth ）has become an indispensable key element in this process.
I. Process challenges of gypsum treatment in thermal power plants
The flue gas desulfurization system of thermal power plants usually uses limestone - gypsum method to remove sulfur dioxide from flue gas ( SO ₂ ）。In this process, the generated gypsum slurry contains a certain amount of water and solid impurities, which need to be solid-liquid separation to desulfurization gypsum separated from wastewater to meet environmental requirements. At this time, the treatment of gypsum faces the following challenges:
- High solid content of sludge ：The solid content in gypsum slurry is high, and the particles are large, which is easy to cause filter cloth blockage.
- High viscosity of slurry ：Due to the presence of certain colloidal substances in gypsum, the difficulty of solid-liquid separation is relatively large.
- Equipment wear and tear ：Gypsum particles have certain friction and hardness, which can easily lead to rapid wear of the filter cloth.
- Highly corrosive environment ：The gypsum slurry in the desulfurization process is acidic or neutral, and long-term immersion will cause chemical corrosion to the filter cloth.
Therefore, choose suitable filter cloth to cope with these process difficulties is the key to ensuring the stable and efficient operation of the gypsum treatment system in thermal power plants.
II. Advantages of horizontal vacuum belt filter
Horizontal vacuum belt filter ，as a highly efficient solid-liquid separation equipment, is widely used in the gypsum treatment process of thermal power plants. Compared with other traditional filtration equipment, HVBF has the following advantages:
- Continuous operation ：Horizontal vacuum belt filter can realize Continuous feeding, filtration, washing, dehydration, slag discharge and other steps to improve work efficiency.
- High filtration efficiency ：Using vacuum suction principle, it can achieve efficient filtration under low pressure, ensuring the separation effect of gypsum.
- Low energy consumption ：Compared with vertical plate and frame filter press and other equipment, the energy consumption of horizontal vacuum belt filter is lower, and the operating cost is relatively low.
- Strong adaptability ：The equipment can adapt to gypsum slurries of different properties, especially suitable for high viscosity and high solid content gypsum slurries.
These characteristics make horizontal vacuum belt filter an ideal choice for gypsum treatment in thermal power plants.
III. Filter cloth selection: high-performance filter cloth with strong adaptability
In the process of gypsum treatment in thermal power plants, the choice of filter cloth directly affects filtration efficiency and equipment operating cycle 。Based on the characteristics of gypsum slurry, Industrial filter cloth selection is particularly important. For Horizontal vacuum belt filter ，the following performance requirements are the key points to be considered when selecting filter cloth:
1. Strong wear resistance
The solid particles and small gypsum crystals in gypsum slurry have certain hardness and friction. In order to prevent the rapid wear of the filter cloth, it is necessary to choose High wear-resistant materials ，such as polyester （ PET ) and Polyamide （ PA ), these materials can effectively extend the service life of the filter cloth.
2. Good acid and alkali resistance
During desulfurization, gypsum slurry is usually acidic or neutral, so the filter cloth must have Acid and alkali resistance to avoid chemical corrosion. Materials such as ** Polyester ( PET ) and Polypropylene ( PP ) ** etc. have shown excellent corrosion resistance.
3. Moderate pore size and high throughput
The gypsum slurry has a high solid content, and the pore size of the filter cloth needs to be controlled within an appropriate range to ensure the effective retention of gypsum particles and the high throughput of the filtrate. For thermal power plant gypsum treatment, usually the pore size is 50–200 microns filter cloth is selected to ensure good filtration effect.
4. Powerful washing performance
During the solid-liquid separation of gypsum, the filter cloth needs to be continuously backwashed to remove the remaining solid substances. Using Good cleaning performance filter cloth can effectively prevent filter cloth blockage and permeability reduction, and improve equipment stability.
5. High strength, high pressure resistance
Under the high-load filtration of gypsum slurry, the filter cloth needs to have sufficient Tensile strength and High-pressure resistance to avoid rupture under high pressure. The material of the filter cloth is usually Composite fiber structure to enhance its load-bearing capacity.
IV. Application effect: Optimization of horizontal vacuum belt filter in gypsum treatment
In a desulfurization gypsum treatment project of a certain thermal power plant, Xiamen Citius (Xiamen Citius) provided high-performance filter cloth and horizontal vacuum belt filter system. After a period of use, significant results have been achieved:
- Extended filter cloth life ：High wear resistance and acid and alkali resistance filter cloth significantly extended the service life, increasing the operating cycle by about 30% of the operating cycle.
- Improved filtration efficiency ：The filtration efficiency of gypsum has increased by 15% or more, and the moisture content of gypsum filter cake is controlled below 30% or less, and the dehydration effect is significantly improved.
- Reduced maintenance costs ：Due to the strong anti-pollution and self-cleaning performance of the filter cloth, the maintenance cost of the equipment has been greatly reduced, reducing downtime and maintenance frequency.
- Optimized environmental performance ：Solid particles in gypsum slurry are effectively retained, and the discharged wastewater and waste gas meet environmental standards, reducing environmental pollution.
These optimization effects not only improve the overall performance of gypsum treatment in thermal power plants, but also reduce operating costs and improve the green and environmentally friendly level of production.
V. Conclusion
In the gypsum treatment process of thermal power plants, Horizontal vacuum belt filter With its efficient and stable filtration performance, it has become the core equipment for solid-liquid separation of desulfurization gypsum. Choosing suitable industrial filter cloth, especially high-performance wear-resistant and acid-alkali-resistant filter cloth, will further improve equipment operation efficiency and filtration effect, ensuring the stability and environmental protection standards of gypsum treatment in thermal power plants.
Xiamen Citius (Xiamen Citius) As a professional industrial filter cloth manufacturer, with 30 years of experience, we provide tailor-made filter cloth solutions to help thermal power plants achieve efficient, low-cost, and environmentally friendly production goals in the gypsum treatment process. With increasingly stringent environmental requirements, future industrial filter cloth technology will pay more attention to environmental protection and efficiency, contributing to the sustainable development of the global energy industry.
For samples, solutions or case support, please contact Xiamen Citius (Xiamen Citius) Technical Engineering Team:
- 📧 Email: wyl@citius-filter.com
- 📞 WhatsApp: +86-13950107241
- 🌐 Website: www.citius-filter.com
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