BENEFITS
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Safe filtration in battery production
Highly efficient filtration technologies are indispensable in the battery life cycle when it comes to handling bulk materials, powders or particulate products. And primarily where filter systems are integrated into the respective process, the focus is on aspects such as easy cleanability, contamination-free recovery and chemical resistance in addition to high separation performance.
Herding® filter systems meet these highest requirements and also feature temperature resistance of up to 450°C, unique durability and safe handling. Even the finest particle fractions are reliably separated based on pure surface filtration. Extremely low clean gas values, consistent operating conditions and maximum availability and energy efficiency are the key features of this innovative technology. Additionally, all Herding filters based on polymers are completely PFAS-free – a unique global feature that once again demonstrates technological leadership and confirms responsibility for environmental protection and sustainability.
Durable
Long service life
Constant operating conditions
Energy efficiency due to low cleaning pressure
Lowest clean gas values from primary filter stage on
Resistant to chemicals
Compact design
Operational safety due to rigid filter matrix
Pure recovery through fiber-free filter medium
PROCESSES
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Sustainable filtration for all areas
Pure product recovery, easy and complete cleaning options and maximum separation performance are essential quality requirements for filter systems in raw material extraction and battery production through to battery recycling. Even the slightest impurities in the product can often lead to entire production batches having to be discarded with considerable losses. In addition, even the slightest contamination in the ambient air of production facilities can have health effects on employees. Herding® filter technology enables maximum availability and safe plant operation in almost all processes that generate particulate emissions.
Production processes
- Milling
- Drying
- Conveying
- Shredding
- Bagging / Packing
- Screening / Classifying / Sifting
- Dosing / Weighing
- Mixing / Blending
- Silo venting
- Working place extraction
SYSTEMS
Process chain battery production
The right filter unit – every step of the way
A well-thought-out modular principle enables a variety of system types, individually adapted to the diverse applications and requirements of the battery industry. The range of variations is complemented by a wide range of housing and construction materials that enable optimal adaptation to different operating conditions. A separate production area ensures a high degree of cleanliness – an essential factor for the quality and reliability of sensitive manufacturing processes.
Herding FLEX
The flexible type series
Herding RESIST
Easy cleanability, high pressures and large product loads
Herding PROCESS
Easy to clean and available in different material diversity
Herding COMP
The compact filter unit for limited spaces
Herding MAXX
For very large air volumes
SAFETY
Fire and explosion protection
The composition, particle size distribution and specific explosion characteristics of the various particulate materials in chemical often require a protection concept tailored to the application due to the resulting explosion hazard.
Herding® Filtertechnik provides the user with a wide-ranging portfolio of preventive and constructive safety technology for filter systems. From advice and selection of the appropriate protection concept to the safe and compliant design of the filter systems through to their installation, commissioning and maintenance.
Fire protection concept
Herding FLAMEBREAK is an object protection system for Herding filter systems with fire detection, detection and suppression to minimise damage in the event of a fire.
1 Fire detection
With a detection cable for both suction operation and when the filter system is at a standstill.
2 Fire alarm
With integrated control for the signal processing of fire detection with signal transmission:
- Externally as a potential-free contact
- Directly on site for visual and acoustic alarm signalling
- For firefighting
3 Fire fighting
By automatically switching off the filter operation and releasing the extinguishing agent aerosol or argon (depending on the fire load).
Herding FLAMEDETECT can alternatively be used for fire detection and signalling if firefighting is to be carried out on site by the operator.
Heat detection
for fire detection
Aerosol generator
for fire fighting
Aerosol spread
during fire fighting
Explosion protection concepts
The Herding® sinter-plate filter as a rigid body is the only filter element that acts as a DustEx zone barrier, which means that there is no dust-explosive atmosphere on the clean gas side of the filter system.
In many applications, preventive measures are sufficient to ensure that explosions in the filter system are avoided. In addition, constructive explosion protection measures can be applied.
Preventive, primary measures
Avoid explosive atmospheres with passivation, inertization or process engineering decomposition Preventive.
Secondary measures
Avoid effective ignition sources in filter systems.
Constructive measures
- Explosion-proof design for the maximum explosion overpressure in accordance with EN 13445
- Explosion-proof design for the reduced maximum explosion overpressure in accordance with EN 14460 with measures:
– Explosion pressure relief on the raw gas side (rupture disk)
– Flameless explosion venting on the raw gas side (rupture disk with downstream quench element)
– Explosion suppression - Aditionally with measures for explosion decoupling at the interfaces of the filter system (raw gas line, clean gas line, dust discharge)
Battery production
OPTIONS
Special designs
- Customer-specific material specifications, e.g. stainless steel, non-ferrous metal-free
- Wear protection against mechanical or chemical attack, e.g. armouring, special coatings (ceramics, ETFE, PFA,…)
- Avoidance of deposits on components that come into contact with the product, e.g. polishing or grinding
Dust discharge
- Continuous or discontinuous systems, tailored to application and customer requirements
- Examples: Rotary air locks, valves, screw conveyors, etc.
Herding SAFE CHANGE
- For safe dust discharge and disposal at the interface with highest frequency for the operator. Herding SAFE CHANGE with Bag-In/Bag-Out has been proven to meet high standards up to OEB5
- Secondary filter, optional with Bag-In / Bag-Out
Dust collection
- Central disposal of separated dust in a filter system
- Central dust collectors