FS Flat Bag Dust Collector

FS
Flat Bag Dust Collector
Eco-efficiency
Our solutions protect the working environment and the external environment, while also
improving production economy and resource efficiency.
Ecological efficiency
•Reduced emissions
•Healthier employees
•Lower consumption of materials
•Safer workplaces
Economic efficiency
•More effective production
•Better utilisation of resources
•Higher quality
•Stronger brand
•Lower environmental costs
•Easier recruitment
Eco-efficiency
Applications:
Foundries • Smelters • Incinerators • Boiler Plants • Minerals • Powder Bulk
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Dust collectors for all foundry areas; furnaces, moulding- and sand plants, grinding,
shot blasting and cleaning.
Flue gas purification in the power industry.
State of the art filter processes and systems
for removal of pollutant gases.
Dust collectors for mineral treatment, e.g. on jaw
and rotary crushers, impact crushers,
screening machines, conveyor belts, air
separators, silo aspirators and loading
stations.
Flue gas cleaning and dust collectors for
secondary aluminium and copper smelting
plants, primary aluminium and steel plants.
Accessories such as coolers and spark
arrestors.
Installation Poland
FS is a very versatile dust collector with high capacity
• Air Volume Range: 10 000 to 250 000 m³/h (10,000 to 200,000 CFM)
• Filtering surface per filter house: 100 to 2500 m² (1,076 -26,900 ft²)
• Usable for temperatures up to 250 °C (482 °F)
Why flat bag filter?
• Customizable to specific applications
• Continuous cleaning
• Compact, modular design
• Leak-proof welded construction
• Small space requirements
• Low maintenance costs
Nederman offers total solutions
Pre-studies
Planning System design Installation
Commissioning
Training
Maintenance
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FS Flat Bag Dust Collector
Components
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Dirty-gas hood
Filter – dirty-gas compartment
Filter bag with spacer mats
Filter bag support
Filter – clean-gas compartment
Slotted wall with clamping frame
Cleaning carriage with nozzle
Cleaning air hose
Cleaning air valve
Cleaning air fan
Driving station for cleaning carriage
Deflecting station with indexing wheel
Support structure with dust collecting hopper
and evacuation screw
Access and maintenance platform with ladder
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b
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d
Dirty-gas inlet
Clean-gas outlet
Dust outlet
Cleaning air inlet
a
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d
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11
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b
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Function
Gases with dust content enter the filter via the crude gas
hood. Flow direction through the filter is from top to
bottom (fall-flow principle). The gas enters the pure gas
chamber of the filter through the flat bag. During this
process, the dust is held back by the filter media and forms
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a filter cake which is important for filtration. The fully
programmable dedusting process is activated after a
specific time period and the dust cleaned out of the filter hose.
The dust falls into the collecting unit and is carried away via
the dust conveyor units.
Cleaning air system for Nederman FS – filter
Intelligent cleaning air purging
The filter type FS is operated with efficient air purging. The
purging air filter located behind the purging air fan provides
an air pulse which inflates the flat bag during a cleaning
cycle and creates an air flow against the filter direction. The connection between the purging air valve and the
purging carriage is achieved by a flexible hose. The purging
carriage is driven by a maintenance-free chain drive and fed
over a guide rail with expansion compensator. The purging
nozzle is positioned by a maintenance-free cycle switch. The
bearings of the rollers are also maintenance-free.
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Indexing wheel
Cleaning carriage
Roller
Sensor
Locking bar
Limit switch
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Offline effect:
Flaking dust from the neighbouring flat hoses
is prevented from being sucked-in during the
dedusting process.
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Why Reverse Air?
Filters Better
Remark:
Relation between dust particle collection and thickness of dust cake
The removal of small particles from
air stream in dry bag filters is mainly
depending on the build up and keeping
of dust cake on the filter bags. The
dust cake is used as a “pre-filtration”
through which all particles have to
pass. Normally all fine dust (particles
size less than 1 um) we can find in
foundry process can be agglomerated
to bigger particles. After this
agglomeration the removal is very
easy with the filter bag. Therefore it is
essential to keep and control the dust
cake on the filter bags by means of a
cleaning device.
Amount of particles removed by dust collector (in % of particles fraction)
Dust removal in relation to filter cake
100.0
95 grams/m2
70 grams/m2
51 grams/m2
80.0
dust cake weight
22 grams/m2
60.0
10 grams/m2
40.0
0,1
0,20
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Particle size (micron)
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About 100 grams/m2 of dust on the
bags is equal to a dust layer of about
0.1mm
Consumes Less Energy
1. Calculation of energy consumption
Reverse air dust collector
Jet pulse system dust collector
Dust collector model: FS 720/675/945
Total filtering surface ft: 13,842
Number cleaning nozzles pcs: 3
Shortest cycle time for cleaning bags min: 10
Energy consumption kW: 5.6
Dust collector model: Total filtering surface ft2: Size of compressed air tank ltr: Pressure drop in tank dp bar: Number of bag pcs:
Number of rows cleaned at the same time pcs: Bag row to bag row time sec:
Shortest cycle time for cleaning bags min: Energy consumption kW: PJ
13,842
40
4.5
135
2
10
11.25
12.96
30.0
Compressed Air
Energy Consumption kW
25.0
20.0
15.0
10.0
Reverse Air
5.0
0.0
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Filter Surface
5,382 ft2
10,764 ft2
16,146 ft2
Filter materials for all demands
Depending on:
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temperature
moisture content
flue gas composition
dust type
Materials: PP 0,8–7,0 dtex; PES 0,8–7,0 dtex;
PTFE 0,7–6,0 dtex; AR 1,1–3,5 dtex;
PPS 1,0–3,5 dtex; PI 0,8–3,5 dtex;
PPS 1,0–3,5 dtex; PAN 0,8–2,8 dtex
Our filter materials differ
according to:
Special design versions
lead to improvements in
• temperature resistance
• acid and alkali resistance
• hydrolysis resistance
• air permeability
• fibre fineness
• expansion behaviour
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Dust build-up on flat bags = formation
of the filter cake increases the filter
properties.
Filtration takes place through the filter
cake and filter material. The dust is separated by regeneration.
residual dust content
chemical resistance
dust flaking behaviour
electrical conductivity
dust and oil repulsion
flame resistance
spark resistance
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The Nederman Group is one of the world‘s leading suppliers
of products and solutions within the environmental technology
sector, focusing on industrial air filtration and recycling.
Nederman products and solutions contribute to reducing the
environmental impact from industrial production processes and
to creating a safe and clean working environment whilst boosting
production efficiency.
The Group´s offering covers everything from the design stage
through to installation, commissioning and servicing.
Nederman has subsidiaries in 30 countries and agents and
distributors in over 30 countries.
Nederman is ISO 9001 and 14001 certified. The Group develops
and produces in its own manufacturing and assembly units in
Europe, North America and Asia.
The Group is listed on Nasdaq OMX Stockholm.
2013-02
www.nederman.com
Nederman Sales companies in: Australia, Austria, Belgium, Brazil, Canada, China, Czech Rep., Denmark, France, Germany, Netherlands, Hungary, India, Indonesia, Ireland, Malaysia, Mexico,
Norway, Poland, Portugal, Romania, Russia, Slovak Republic, Spain, Sweden, Turkey, United Kingdom, USA, Thailand, Vietnam
Nederman Distributors in: Argentina, Bulgaria, Chile, Croatia, Cyprus, Egypt, Estonia, Finland, Greece, Hongkong, Iceland, Israel, Italy, Japan, Korea, Latvia, Lithuania, New Zealand, Philippines, Saudi
Arabia, Serbia, Singapore, Slovenia, South Africa, Switzerland, Taiwan R.O.C, United Arab Emirates