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Desulfurization Filter Cloth, Horizontal Vacuum Belt Filter, Magnesium-Based Desulfurization
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Detailed Description
- Desulfurization Filter Cloth, Horizontal Vacuum Belt Filter, Magnesium-Based Desulfurization
Filter machine type: Horizontal vacuum belt filter
Application Industry: Magnesium-Based Desulfurization
Handling Material Description: Magnesium-Based Desulfurization
Key Equipment for Solid-Liquid Separation in the Magnesium-Based Desulfurization Process: An Analysis of Horizontal Vacuum Belt Filters and Desulfurization Filter Cloth Applications
At “ Dual Carbon ” Against the backdrop of continuously deepening strategic and industrial environmental governance, flue gas desulfurization stands out as a key measure to reduce SO ₂ The core process of emissions has become an essential technology for industries such as steel, power generation, non-ferrous metallurgy, and chemical manufacturing. Among these, Magnesium-Based Desulfurization With advantages such as high reaction efficiency, high utilization of byproducts, and low operating costs, it is gradually replacing traditional limestone. — The gypsum method has become a key direction for many enterprises seeking to transform toward cleaner production. Meanwhile, in the magnesium-based desulfurization process, Efficiency and Stability in the Solid-Liquid Separation Process , directly determining the long-term operational efficiency and economic viability of the desulfurization system.
In this segment, Horizontal Vacuum Belt Filter Machine Horizontal Vacuum Belt Filter, HVBF ) With high-performance desulfurization filter cloth The coordinated use of these technologies has become the key technical approach for achieving continuous, clean, and efficient separation.
I. Introduction to the Magnesium-Based Desulfurization Process
Magnesium-based desulfurization primarily uses magnesium oxide ( MgO ) or magnesium hydroxide ( Mg(OH) ₂ ) The slurry serves as the absorbent, reacting with sulfur dioxide in the flue gas SO ₂ ) A reaction occurs, producing magnesium sulfite ( MgSO ₃ ) or magnesium sulfate ( MgSO ₄ ), its basic reaction is as follows:
SO ₂ + Mg(OH) ₂ → MgSO ₃ + H ₂ O
2MgSO ₃ + O ₂ → 2MgSO ₄
The generated slurry, after undergoing processes such as sedimentation and filtration, yields byproducts. Magnesium sulfate solution or crystals , widely used in fields such as agricultural fertilizers, pharmaceuticals, and building materials, enabling resource recycling.
However, during the handling of the slurry after the reaction, Solid particles are fine, highly concentrated, and have high viscosity. Traditional plate-and-frame filter presses or centrifuges have limitations in terms of continuity, automation, and the moisture content of the filter cake, making it difficult to meet the demands of modern environmental protection projects. High-efficiency separation with low operating costs The requirements.
II. Horizontal Vacuum Belt Filter: The Core Equipment for Magnesium-Based Desulfurization
1. How it works
A horizontal vacuum belt filter is a type of Continuous operation, high degree of automation The filtration equipment works as follows: The material slurry is evenly spread onto the running filter cloth via a distribution device. Under vacuum suction, the liquid is drawn off, leaving behind a filter cake. Subsequently, the filter cake can undergo multi-stage washing and air-blown dewatering processes, ultimately leading to dry discharge and continuous recycling.
Its typical process includes:
Feed material → Vacuum Filtration → Cleaning → Secondary dehydration → Filter cake discharge → Filter cloth cleaning and return journey.
2. Technological Advantages
- Continuity and Automation
Unlike batch-type filter presses, HVBF Can be achieved 24 Hourly continuous filtration reduces manual operations and downtime. - Integrated Filtration and Washing
It can complete the filtration, washing, and dewatering processes within the same system, making it particularly suitable for multi-stage washing of magnesium-containing sulfate slurries in magnesium-based desulfurization, thereby reducing impurity levels and enhancing the purity of by-products. - Controllable filter cake thickness and washing uniformity
By adjusting the fabric thickness and vacuum sections, ensure uniform filter cake formation, which facilitates subsequent oxidation and crystal quality control. - Low energy consumption and high recovery rate
Vacuum filtration consumes low energy, features a compact equipment design, and allows the filtrate to be recycled, helping to conserve water and reduce wastewater discharge.
These characteristics enable HVBF Becoming part of the magnesium-based desulfurization process “ Solid-liquid separation + Washing + Recycling ” The preferred equipment for this segment.
III. Performance Requirements and Key Selection Criteria for Desulfurization Filter Cloth
During the operation of a horizontal vacuum belt filter, The filter cloth is the core medium. , its performance directly determines the filtration efficiency, filter cake moisture content, and equipment lifespan. Magnesium-based desulfurization slurry features high alkalinity, high solid content, and strong crystallization properties; therefore, the filter cloth must possess the following characteristics:
- Excellent alkali resistance and hydrolysis resistance
Magnesium-Based Desulfurization System pH Usually at 9–11 Between these conditions, the filter cloth must maintain stable performance over the long term without degrading. - Balancing High Flux with High Retention Performance
Both ensuring the filtrate is clear and transparent, and maintaining a high filtration rate, are essential for boosting throughput. - Excellent filter cake detachment and regeneration capability
Magnesium-based crystalline deposits are prone to scaling, so the filter cloth surface must have a structure that facilitates the automatic detachment of filter cakes while also enabling high-pressure backwashing and chemical cleaning. - High dimensional stability and tensile strength
Filter cloths in continuous operation must withstand forces such as tension, vacuum adsorption, and drum friction, requiring a stable fabric structure with excellent tear resistance.
Xiamen Xiedias CITIUS excels in the industrial filter cloth sector. 30 Years of R&D and manufacturing experience allow us to provide customized filter cloth solutions tailored to the various stages of magnesium-based desulfurization—oxidation, crystallization, and solid-liquid separation—including Anti-clogging structure, double-layer weaving, edge-sealed adhesive, and compatible with high-pressure water cleaning system Wait for process optimization to ensure continuous and efficient equipment operation.
V. Conclusion
As industrial flue gas treatment standards become increasingly stringent, magnesium-based desulfurization technology is emerging as the core approach for next-generation green desulfurization. Faced with the demanding requirements of complex slurry systems and high-standard resource recovery, Horizontal Vacuum Belt Filter With High-performance desulfurization filter cloth This combination is continuously driving the entire process toward greater efficiency, cleanliness, and intelligentization.
In the future, technology-driven enterprises like Xiamen Xiadias CITIUS, which are deeply rooted in the industrial filtration sector, will continue to deliver higher-performance filtration media and equipment solutions, playing a vital role in advancing environmental protection and resource recycling—and contributing even more to clean, sustainable industrial production. “ Made in China ” The power.
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