5 Must-Have Features in a fiber bed mist eliminators
A Closer Look at the Technology Behind Mist Eliminations - Kimre Inc.
When designed properly, custom engineered Mesh Mist Eliminators and Fiber Bed Filters will provide the final user with many years of optimal performance and minimal maintenance requirements.
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Kimre™ Clean Air technology has been designing custom mesh pad mist eliminators since . Our sophisticated line of mist eliminators such as our B-GON® Mist Eliminator is available in the widest range of fiber diameters in the industry, from the finest (0.05 mm / 0.002”) to the coarsest (0.94 mm / 0.037”) and has been used in more than 40,000 installations worldwide.
It is imperative to do your research when choosing a mist eliminator company for your filtration needs. Should your application require a mesh pad filter or a fiber bed mist eliminator, there are many reputable vendors. For over 50 years, Kimre has been known for being a world leader in innovative products, including custom fiber bed filters.
In this article, we will take a closer look at the technology behind fiber bed candle filters and mist eliminators, their applications, and how they contribute to meeting stringent emission requirements and regulations.
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Understanding Candle Filters:
In Scrubber Systems, mist eliminators of different styles play a crucial role in the overall performance of the vessel. Fiber Bed Filters play a crucial role in creating a safer and healthier environment, particularly for submicron filtration. These filters can offer 99.9% of particle collection. They are optimal in flow rates of 10 CFM to 250,000 CFM (15 Cubic Meters/Hr to 425,000 Cubic Meters/Hr).
Candle filters, also known as Fiber Bed Filters, are highly efficient for the filtration and separation of gases and liquids. They are constructed using a cylindrical vessel composed of multiple filter elements. Ideally, these elements should consist of quality materials. Depending on the design, the candle filter will consist of a structural inner cage, outer cage, and an end plate. Cage materials could include carbon steel, alloys, FRP and plastic. Between the inner cage and outer cage is the filter media. The media usually consists of fiberglass, polyester, or polypropylene. Proper filtration media will be determined based on the identified particulate that needs to be collected. The fibers create a tortuous path, causing impurities to impact and adhere to their surfaces, ultimately draining as clean liquid.
Key Features and Benefits of Candle Filters:
- High Filtration Efficiency: Candle filters are extremely efficient in the removal of sub-micron-sized particles from the gas stream. This ensures enhanced process efficiency in various industries and applications. Candle filters can be used in a variety of applications, including organic applications such as, asphalt roofing products, compressed air & gasses, food processing (vegetable oil & lard frying. Other applications include metal machining, oil mist plasticizer, rotating equipment, lube oil and reservoir urethane. Candel filters are also used in chemical processing, such as in sulfuric acid, chlorine, and hydrogen (Chlor-Alkali), pulp and paper, semi-conductor, acid storage and vent tanks, platinum recovery, polymerization, and styrene & urethane.
- Their versatility makes them a preferred choice for diverse industrial processes.
Candle filters are known for their compact design, making them suitable for installations with space constraints. They can be easily integrated into existing systems, providing a seamless filtration solution.
Fiber Bed Mist Eliminators: Advanced Air Cleaning Technology
In addition to fiber bed mist eliminators, Kimre offers custom designed mesh mist eliminators. These mist eliminators are composed of layers of material specially designed to capture liquid droplets and particulate matter from gas streams.
Significant Features and Applications of Mesh Pad Mist Eliminators:
- Kimre can custom design mesh pad mist eliminators that can handle the widest range of gas velocities and contaminant levels. They excel in the removal of mist and droplets from gas stream and offer efficient performance ensures compliance with stringent emission regulations while offering the highest collection efficiency of ANY mesh-type media: 99+% @ 1 µm. Our mesh pad mist eliminators provide collection efficiencies for mist droplets down to 3-5 microns in size but can have limited liquid handling capabilities and are susceptible to fouling from insoluble contaminants.
- Custom mesh pad fabrication conforms to any vessel configuration and orientation. Composite pads of various mesh styles allow for optimization of efficiency, pressure drop, and pluggage resistance while offering lower pressure drops than traditional knitted mesh.
- The custom mesh mist eliminators are engineered using a wide range of high-quality materials of construction, including polypropylene, PVDF, ETFE and PFA, to meet any level of temperature and corrosion requirements.
- These materials ensure durability and longevity in the most demanding environments. This longevity translates to cost-effectiveness and prolonged system reliability. The media is cleanable & reusable for extended service life in the harshest environments.
Conclusion
Packed Bed Scrubbers: Key Design Factors, Types and Configurations
The material of the packed bed wet scrubber design housing must be resistant to corrosion and chemical aggression. The choice is based on the chemical composition of the air stream, as well as the operating temperature and pressure. Materials like stainless steel, polymers, fiberglass, or specialized coatings may be used depending on these factors.
2. Sludge Removal System Design
A proper drainage configuration is essential to prevent sludge and contaminants from accumulating at the bottom of the tower. This reduces maintenance needs and keeps the equipment running efficiently.
3. Absorbent Selection
Choosing the correct absorbent is critical for the effective removal of pollutants. The choice depends on the type of contaminants, their concentration, and the specific chemical reactions that will occur during the scrubbing process.
4. Droplet Carryover Assessment
To prevent droplet carryover in the gas stream, it is important to configuration or install a mist eliminator. This device, located at the column outlet, captures droplets, preventing them from exiting with the cleaned air.
5. Control and Monitoring
Sensors and control systems should be incorporated to monitor key process parameters such as gas velocity, temperature, pressure, liquid levels, and efficiency. This ensures optimal operating conditions and allows for quick responses to deviations.
6. Energy Cost Evaluation
The design must account for energy consumption, particularly for the pumping of liquids and air through the equipment. Minimizing pressure drops and optimizing the performance of pumps, fans, and other equipment will help reduce energy costs.
7. Maintenance Requirements
Consider the ease of maintenance and replacement of key components. This helps minimize downtime and operational costs.
8. Emission Assessment and Regulatory Compliance
The equipment should be designed to meet environmental standards and emission regulations for pollutants released into the atmosphere. Process modeling and efficiency evaluations should be conducted to ensure compliance with these standards.
A packed bed scrubber calculation should be performed by a specialist, taking into account the input data and environmental requirements of the area. We are ready to perform the necessary calculations, so feel free to get in touch with us! Packing refers to elements of various shapes and sizes with a developed surface dimension. They are categorized into random and structured types based on how they are arranged inside the equipment.
Random Bed Material is poured loosely into the mass transfer section without any specific orientation. The elements are distributed in a disorganized manner, creating irregular paths for the gas and liquid to travel through. It can be further divided into stationary (fixed) and floating types.
- Fixed Elements come in a variety of shapes, including ring-shaped, cylindrical, saddle-shaped, spherical, and others. The improvements in their configuration are typically achieved by increasing the number of bent units or adjusting the height-to-width ratio.
A fixed bed packed scrubber is suitable for a variety of applications, such as treating gaseous emissions from chemical processes, waste incineration, and more.
We have accumulated vast experience in the manufacturing and supply of fixed bed packed tower scrubbers. Here are some examples of our equipment:
- Floating or Fluidized Elements are available in shapes like spherical, cylindrical, spiral, ring-like, prismatic, or cubic. These components can be hollow, solid, or perforated, depending on the application and layout requirements.
Structured filling is arranged and oriented in such a way that a system of winding channels is formed, allowing phases to stream in a more controlled and efficient manner. These items are stacked in an ordered pattern to optimize phase interaction.
They can be classified into block and individually arranged types:
- Individually arranged regular components consist of items such as rings, prisms, angles, I-beams, and spheres that are positioned within the mass transfer section in a specific manner relative to each other. The components in adjacent vertical layers are arranged to avoid the formation of continuous channels. For ease of installation, individual items can be pre-assembled into containers that are then placed in the column housing. However, it has not been widely adopted in the industry due to the significantly increased labor intensity and installation costs.
- Block components refer to the type of structured media that is most commonly used in practice. It is installed in the column as blocks, which is how it gets its name. A block typically consists of a collection of perforated, corrugated, ribbed, or mesh sheets, each with various structural features and specific spatial orientations relative to one another.
A foam layer in a foam scrubber is formed through aeration, where gas is introduced into the liquid, creating bubbles. Mechanical agitation, the use of filling to increase the contact area, and the addition of foaming agents also contribute to the formation and stability of the foam.