Transcript Impact System - 诺冠电磁阀 诺冠气缸 无锡宝诚

Impact System
Impact cylinders used for cleaning of heating surfaces
at industrial and waste incineration plants
Alexander Haug
Waste-to-Energy Plant / Impact System
Delivery
Incineration
Flue Gas Cleaning
» Pneumatic impact cylinder is used for the efficient cleaning of contaminated heating areas
in waste-to-energy plants
» Adjustable impact energy allows precise and effective cleaning
» Clean heating elements are the basic to keep the overall efficiency of the evaporator, superheater and economizer at a constant level
» Extending the OPERATING TIME of the plant and maximizing waste throughput
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Cleaning Heating Surfaces of Incinerators
Alternative
Existing Techniques
Mechanical drop
hammer system
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Electro-pneumatic impact wagon
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Pneumatic Single Rapping
Waste-to-Energy-plant – Flowchart of burning process
reburning zone
Burning Process
steam boiler
» Delivered waste is collected in the
storage pit.
» Cranes then transport the waste to the
funnel tube.
» The waste is then evenly distributed on
the grate where it is dried, vented and
incinerated at temperatures between
850ºC and 1100ºC
funnel tube
» Resultant smoke gases collect in the
reburner zone where the waste is
complete burned
grate
» The heat produced during this process
produces stream which, in turn, is used
to generate electricity through a turbine
storage pit
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Cleaning the Tube Bundle Heat Exchanger
hot flue gas
convective
heating surface
hopper
» High concentration of sticky particles in the flue gas
» These particles will blockage the flue gas path
Cleaning the heating surface is necessary to run the plant
and guarantees a high degree of efficiency
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Rapping Process
» High impact force provide an efficient
cleaning
» Rapping the polluted heating tube bundles
caused an oscillation, which shake off the
build up material
tube
bundle
boiler casing
» Cleaning with air or water is no longer
required
»Extension of travel time before shut
down the plant
»Increase the overall efficiency
and waste throughput of the plant
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plunger
sticky
particles
Demand of the customers
Optimization of the cleaning system
» Optimal cleaning of the heat exchange surfaces to
optimize the absolute efficiency
» Subsequent and Individual adjustment of the impact
force
» Reducing maintenance costs
» Reducing the construction volume
» Feedback to control room of the cleaning activity
» Check the wear and inform about failures
» Process stability
» Guarantee maximum travel time
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Pneumatic Single Position Rapping
» Individual adaptation of impact force for each point
» Wear indicators
» Check the wear and inform about failures
» Low noise level
» High process reliability
» Low maintenance cost and just a few spare and wear parts
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Norgren Impact System
» Elements of the Norgren Impact System - Project
» Product

Impact Cylinder
» Control Cabinet




SPS (S7) Profibus DP
S7 Touch Panel
Coupler for Profibus or Fibre Optic Cable
Valve Islands (3/2 way function)
» Software
» Engineering/Documentation
» Installation
» Commissioning
» Optional
» Mounting flanges with plungers and springs
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Impact Cylinder SPCH/080003
Application:
cleaning of heating surfaces at industrial and incineration
plants
»
Technical data - SPCH/080003
» Temperature range: -20ºC to + 80ºC
» Pressure range: 3 – 7.5 bar
» Impact energy: 125 Joule at 7.5 bar control pressure
» Triggering via valve islands with 3/2-way double
solenoid valve (single-acting)
» Compressed air: filtered 40 um
» Junction: hose fitting PA-pipe (Ø10mm)
» Air consumption: approx 5 litres per impact
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Adjustment of the Impact Energy
Adjusting screw
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Force Compensation
» Force reduction in the end position leads to better vibrations on the pipes
Without compensation
With compensation
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Wear measurement of the striking pins inside
the boiler
Dipstick (go, no-go
status) of pin wear
Dipstick
Min- Max display
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Status at the flange
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Automatic
wear-indicator – can be replaced
with electrical pressure switch
Optical Wear Indicator for SPCH/080003
Wear of the impact pin inside the boiler can be
assessed with the dipstick:
• Remove visual indicator
• Insert dipstick
• Assess whether it is within acceptable region
• Reassemble the indicator
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When the wear is > 16 mm, the indicator
is red and the cylinder will not impact.
Remove indicator to reset.
This protects both the cylinder and the
boiler parts.
Drawing Impact Cylinder SPCH/080003
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Benefits of the Norgren Impact System
»
»
High efficiency constantly during heat
exchange due to effective rapping of the pipes
Savings in support and operation
Picture description:
Left side: pipes due to bad rapping
Right side: pipes after good rapping (Norgren)
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Reference List - Impact Systems
Germany
» MVA Leuna Boiler I + II
» MVA Sonne (Großräschen)
» MVA Premnitz
» MVA Hameln
» MVA Herten
» MVA Mannheim
Built
2006
2008
2008
2009
1982
2009
International
» WTE Dürnrohr Boiler I + II (Austria)
» WTE Dürnrohr Boiler III
(Austria)
» WTE Pfaffenau
(Austria)
» WTE Delfzijl Boiler I + II (NL)
» KEBAG Emmenspitz
(Switzerland)
» KVA Chevenez, Geneve (Switzerland)
» KVA Turgi Aarau
(Switzerland)
» WTE Allington*
(UK)
» WTE Moskau*
(Russia)
*Impact wagon system
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2005
2009
2009
2009
2006
2002/2009
1996
2005
2007
Project Dürnrohr Boiler I + II + III
Impact system with 94 impact cylinders per boiler
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Control Cabinet Impact System
Dürnrohr (Austria)
» SPS (S7 300) Profibus DP
» Signal via Profibus- or LWL coupling
» User input with S7 OP touch panel
» Solenoid valve island 48 x 3/2-way double
valves
» Push- In slot via 10 mm PA- pipe
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Impact System
» Each impact point is
controlled with one cylinder
» Access via angle screw
coupling and a 10 mm PApipe
» Assembly of the impact
cylinder on the boiler with a
flange or welding bell
» Each side of the boiler is
controlled via control cabinet
with valve island and control
panel
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Cleaning of heating surfaces with single
impact spots
Dürnrohr (Austria)
» Single-acting impact cylinders
(94 per boiler)
» Triggered via valve island with double 3/2-way
solenoid valves
» 5 liters / impact at 6.5 bar
» One 10mm PA tube per cylinder
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Key Advantages of Norgren Impact System
» Optimal cleaning
» Extend the maximum travel time
of the plant
» Guarantee high overall efficient
» Maximize the waste throughput
» Keep an “Eye” into the boiler
» Check the wear and inform about failures
» Subsequent adjustment of the cleaning system to your plant
» In- / decrease the impact force
» Change the iteration of the cylinder groups
» Nearly no maintenance and no spare and wear parts
» Comfortable operation and feedback to the control room
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Contact
www.norgren.com
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