High-Temperature Dust Collector
Overview
NGK sells high temperature gas dust collectors that use "Cerallec," its proprietary ceramic filter developed by integrating technologies from honeycomb ceramics used for automotive exhaust gas purification and ceramic filters for water treatment.
While bag filters and electrostatic precipitators had traditionally been the mainstream for dust collection equipment, bag filters presented issues such as higher total costs due to cooling equipment, large installation space requirements, and filter clogging due to pore opening. Electrostatic precipitators also had problems, including high maintenance costs and fluctuations in collection efficiency caused by changes in the electrical resistance of dust particles.
The Cerallec system solves these challenges.
Characteristic
High Collection Efficiency
Recovery with an efficiency of over 99% is achievable.
It contributes to environmental protection and the highly efficient recovery of valuable materials.
High Separation Capability
The precisely controlled micropore structure enables separation of submicron particulates in gas streams and supports efficient recovery of advanced material precursors, including 5G grade silica and Li ion battery metals such as Ni, Co, and Mn.
High-Temperature Operation
The ceramic’s high thermal resistance and non combustibility enable safe filtration of high temperature gas streams. Eliminating gas cooling systems and allowing waste heat recovery supports cost, energy, and carbon reduction benefits.
Corrosion Resistance
The ceramic material offers high chemical durability and can be used with corrosive gases such as hydrochloric acid.
Long Service Life
High mechanical strength prevents pore degradation during back pulse cleaning, ensuring long filter life. Reduced replacement frequency in processes handling regulated powders such as nickel lowers operating costs and enhances safety.
Compact Design
The honeycomb structure provides a large surface area, reducing installation space to roughly one quarter to one half that of a bag filter. Eliminating gas cooling equipment enables an even more compact system layout.
Product Introduction Video
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Dust Collection & Powder Recovery Flow
With sub 5 μm, tightly controlled pore sizes, the filter captures particulates in exhaust gas. Periodic back pulse injection of high pressure gas cleans the filter and enables recovery of valuable materials.
Backflushing procedure
Initial performance
The filter pressure drop is at the same level as a bag filter.
Filtration velocity: 1 m/min
Filter pressure drop: 0.5 kPa
Example of Application
NGK ’ Cerallec system is highly regarded for its excellent dust collection performance and compact installation footprint, and it is used across a wide range of industries.
From soot reduction measures in mobility-related fields such as marine vessels and railways, to the recovery of valuable materials from exhaust gases generated in the production of lithium ion battery cathode materials—essential for a decarbonized society—and silica used in communication infrastructure that supports the digital world, the Cerallec system quietly plays a vital role in supporting people’s everyday lives behind the scenes.
Enables the collection of valuable materials such as nickel and cobalt from exhaust gas for re-utilisation.
![2 Cooperation with the public, private and academic sectors [New fields]](/product/img/dustcollector_im18.webp)
Supporting development
Soot prevention measures in biomass power gener-ation market etc.
Enables the collection of unburned biomass from high temperature exhaust gas to prevent clogging or fouling of the process.
Enables the collection of SiO2 and HCl from the exhaust gas and then utilise them on the optical fibre manufacturing process.
Enables the collection of the product (silica) from high temperature gas in the manufacturing process.
Enables the collection of dust from the exhaust gas of pyrolysis processes.
Enables the removal of black carbon from exhaust gas to prevent smoke.
Characteristics of filter modules
| Material | Cordierite | |
|---|---|---|
| Continuous Operating Temperature (filter element only) | Up to 900 ℃ | |
| Outside Dimensions | 150 × 150 × 515 mm | 150 × 150 × 500 mm |
| Cell Pitch | 6 mm pitch | 4 mm pitch |
| Filtration Area (per element) | 2.7 m2 | 4.0 m2 |
| Average Pore Size (fine particle layer) | Two-layer coating: approx. 1 μm Single-layer coating: approx. 5 μm |
Single-layer coating: approx. 5 μm |
| Porosity | 48% | |
| Softening Temperature | 1400℃ | |
| Compressive Strength (axial direction) | 40MPa | |
| Compressive Strength (radial direction) | 15MPa | |
Application lineup
Inquiry about High-Temperature Dust Collector
Please apply with the contact form and give us your comments or questions.