FIBER BED (CANDLE FILTERS)
Galiakotwala Engineering has supplied advanced Mist Eliminator systems manufactured from speciality materials to 216+ Chemical Plants in 41+ countries across the world.
Fiber Bed Mist Eliminators are used to remove fine particles from a gas stream. Fine particles include submicron particles (i.e. below 1 micron) and particles between 1 and 3 microns. All Fiber Bed Mist Eliminators are cylindrical, with a fiber or fiber/ metal mesh layer fitted between two concentric cages. These eliminators are usually installed on a tube sheet within a tower. Soluble solids can be efficiently handled by dissolving them in a solvent, while insoluble solids can also be managed to a moderate degree. However, excessive insoluble solids may lead to plugging of the Fiber Bed Mist Eliminators.
Types of Galiakotwala Fiber Bed Mist Eliminators
Brownian Movement
Fiber Bed Mist Eliminators are used for particles in the range of 0.1 to 3 microns.
BMB Series
- The most efficient Fiber Bed Mist Eliminators are those with maximum randomization of fibers.
- This randomization enhances particle capture due to Brownian movement. The fibers are precision-packed to ensure optimal efficiency and pressure drop.
- This type of Candle Filter features a cylindrical fixed cage and specialized high-efficiency fibers. For enhanced drainage and prevention of re-entrainment of separated liquids, a special layer can be included (BMBR) Series.
BMW Series
- High-efficiency Fiber Bed Mist Eliminators with a lower pressure drop than the BMB series.
- The fiber is precision-wound to ensure optimal efficiency and minimal pressure drop.
- A special layer is included to enhance drainage and prevent re-entrainment.
Impaction Movement
Fiber Bed Mist Eliminators are used for particles in the range of 1 to 10 microns.
IMB Series
- Handles much higher gas flows than Brownian movement candles; therefore, the required number and size of candles are reduced significantly compared to Brownian movement type candles.
- Fiber is precision packed to ensure optimum efficiency and pressure drop. These types of Mist Eliminators primarily use impaction and interception mechanisms to collect particles.
IMW Series
- Handles higher gas flows than the IMB series.
- Fiber is precision wound to ensure optimum efficiency and pressure drop.
- Drainage is enhanced by using a special drainage layer.
IMW-CK Series
- This is a new development that uses co-knit layers of high-efficiency fiber.
- Filtration and drainage layers are enhanced, allowing better efficiencies and longer time intervals between cleaning cycles, reducing downtime.
How It Works
Gas streams laden with liquids flow horizontally through the filtration layer of the Mist Eliminators. Liquid particles are captured using three mechanisms: Impaction, Interception, and Brownian motion.
This allows filtered gas streams to pass to downstream equipment. As particles collide, they coalesce into larger particles or films of liquid.
These droplets or films of liquid are pushed towards the drainage layer of the fiber bed by the incoming gas. A special drainage layer in Galiakotwala Engineering Fiber Bed Mist Eliminators ensures quick and efficient drainage.
Typical Operation of Candle Filters*
*Illustrations are for representation purposes only.
Typical Applications
PROCESS
LOCATION
RECOMMENDED EQUIPMENT
Sulphuric Acid
Chlorine
Phosphoric Acid
Nitric Acid
Blue Haze Applications
- Drying Tower
- lnterpass Absorption Tower
- Final Absorption Tower
- Cross Flow/ Product Stripper
- Acid Concentrator
- Oleum Vent Tanks
- Tail Gas Scrubber (Caustic/ Ammonia)
- Wet Chlorine
- Dry Chlorine
- Hydrogen
- Absorber
- Evaporator Towers
- Catalyst Post
- Absorbing Tower
- Neutralizer and Evaporator
- Plasticizer Solvent Fume Removal
- Lube Oil Haze from Rotating
- Equipment Metal Working
- Operations Plastics Processing
- Asphalt Production Loading Fabric
- Testing and Coating
- IMW/ IMW-CK/ IMB/ SX-CK Mesh Pads
- BMW/ BMB/ IMW-AP
- BMB/ BMW/ IMB/ IMW-AP/ SX-CK Mesh Pads
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- BMB
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- IMW-AP/ IMB
- CK Mesh Pads/ BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
- BMB/ BMW
Repacking Services
We also offer repacking services for Candle Filters where the cage is in good condition but the fiber is no longer usable. This process typically restores the candle’s efficiency and pressure drop to levels comparable to those of a new filter.
What Our Customers Say
“I am pleased to report that since installing the GEC BMW Type Candle Filter in our Interpass Absorption Tower (IPAT) at our Sulphuric Acid Plant in 2019, it has performed exceptionally well. We have not observed any acid condensate at the outlet of the IPAT, indicating the filter is effectively removing any impurities.”
Manager SAP Plant
Birla Copper
