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Improve Coal Slag Filtration with Industrial Vacuum Filter Belts
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Detailed Description
Application Analysis of Industrial Filter Cloth in Coal Chemical Industry for Coal Slag Treatment Using Horizontal Vacuum Belt Filter
With the continuous advancement of technology in the coal chemical industry, the deep conversion and clean utilization of coal resources have become key pathways for industry development. The coal chemical process generates a large amount of solid by-products such as coal slag, coke slag, and slurry. If these high-water-content, high-viscosity materials are not properly handled, they will not only affect process efficiency but also bring about serious environmental burdens. In this context, Horizontal Vacuum Belt Filter as a continuous and efficient solid-liquid separation equipment, its application in coal slag dewatering treatment has gradually received attention, while industrial filter cloth as the core filtration medium of this equipment, its performance directly determines the filtration efficiency and system stability.
I. Challenges in Coal Chemical Coal Slag Treatment
The coal chemical industry chain is long and the process is complex. Coal slag is generated in all stages, from coal gasification and coking to methanol synthesis and olefin production. This type of coal slag usually has the following characteristics:
- Uneven particle size, wide distribution Coal slag contains unreacted carbonaceous particles and inorganic mineral residues;
- High water content, strong compressibility Low slurry concentration, containing a large amount of capillary water and bound water;
- Easy to clog, difficult to dewater Traditional pressure filtration methods are inefficient and have strong intermittent operation;
- Strong corrosiveness to materials Contains certain alkaline or acidic components, requiring high chemical resistance of the filter cloth.
Therefore, choosing a continuous, corrosion-resistant, and stable filtration solution is crucial for the coal chemical industry.
II. Advantages of Horizontal Vacuum Belt Filter
Horizontal Vacuum Belt Filter ( Horizontal Vacuum Belt Filter, HVBF ) has the following characteristics, making it very suitable for coal slag dewatering applications:
- Continuous operation No frequent shutdown and unloading is required, significantly improving equipment utilization;
- Filter cake thickness is adjustable Adapts to different material filtration characteristics;
- Vacuum negative pressure drive Improves dehydration rate and reduces filter cake moisture;
- Online cleaning is available Filter cloth is recycled, improving the level of system automation;
- Compact footprint, convenient maintenance Adapts to the complex layout requirements of coal chemical plants.
In this system, the filter cloth is not only the core of solid-liquid separation but also a key variable that determines the filtration rate, filter cake quality, and filtrate clarity.
III. Performance Requirements and Selection Strategy of Industrial Filter Cloth
Industrial filter cloths used in coal slag filtration must meet the following core indicators:
1. Excellent filtration accuracy and permeability
While ensuring filtration accuracy (generally requiring 5~50μm ), the filter cloth must have good gas-liquid permeability to ensure vacuum conduction efficiency and avoid the formation of " air resistance ” phenomenon.
2. High mechanical strength and wear resistance
The filter cloth needs to continuously bear the material and vacuum traction force. Long-term operation places high demands on the tensile strength and tear strength of the fabric.
3. Good stripping performance
Coal slag is relatively sticky. If the filter cloth surface is too smooth or particles easily embed in the fabric gaps, it will cause the filter cake to be difficult to detach, affecting the circulation efficiency. It is recommended to use surface-modified or composite structure filter cloths, such as double-layer weaving, single-filament + multi-filament composite fabrics, etc.
4. Chemical corrosion resistance and high-temperature adaptability
Some coal slag slurries contain alkaline liquids or residual organic matter, and the filter cloth material needs to have good acid and alkali resistance and thermal stability.
IV. Xiamen Citius (Citius) : Providing filter cloth solutions for the coal chemical industry
As a professional manufacturer of industrial filtration material technology, Xiamen Citius (Citius) Filtration Materials Technology Co., Ltd. has 30 years of industry experience, focusing on the research and development and customization of industrial filter cloths and filter belts, especially accumulating rich practical experience in high-load industries such as coal chemical and mining and metallurgy.
In coal slag filtration applications, Citius (Citius) provides the following customized solutions:
- Recommended filter cloth type High-strength polyester monofilament filter cloth, double-layer fabric structure, combined with heat setting + surface anti-clogging treatment;
- Filtration accuracy coverage from 10μm~100μm A variety of specifications are available to adapt to different coal slag fineness;
- High temperature and corrosion resistance process The filter cloth can operate stably at 80℃ Under a weakly alkaline environment, it exhibits excellent dimensional stability;
V. Practical Cases and Results Verification
In a large coal-to-methanol project, a large amount of coal slag slurry is produced in the coal gasification stage. In the past, an intermittent plate-and-frame filter press was used, resulting in frequent equipment shutdown and filter cake moisture content as high as 50% above.
Introducing Xiamen Dias (Citius) with its matched industrial filter cloth horizontal vacuum belt filter system later, the operating efficiency increased 30% above, and the filter cake moisture content decreased to 30% below. The service life of the filter cloth is stably over 6 months, extending the maintenance cycle and saving a lot of manpower and material costs.
VI. Conclusion
The coal chemical industry is at a critical point of transformation and upgrading, and efficient, automated, and low-energy-consumption solid-liquid separation technology has become one of the core directions for process optimization. As the " heart ” of filtration equipment, the performance of industrial filter cloth will directly affect the operating efficiency and economy of the separation system.
Xiamen Citius (Citius) We will continue to cultivate the coal chemical industry sub-scenario, relying on rich industry experience and strong weaving / processing technology capabilities to provide customers with more reliable, adaptable, and economical industrial filter cloth solutions, helping the coal chemical industry achieve clean production and efficient resource utilization.
- Industrial filter cloth, horizontal vacuum belt filter, coal chemical industry coal slag filtration
Filter type: Horizontal vacuum belt filter
Application industry: Coal chemical industry
Material description: Coal slag
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