JT.004.10.040 pages

Thermal Processing technology
PERFORMANCE
in
mo t i on
JT.004.10.04.EN
Bed Ash Cooling in FBC plant Elberfeld
Application and Mode of Operation:
Specifications:
Bed ash in FBC plants (FBC = Fluidised Bed Combustion) is predominantly cooled by means of cooling screws. Faults can easily
arise in complicated conditions of use and the inspections and
repairs are often extensive and time-consuming.
Machine type: tt
Length: ttt
Width: ttt
Cooling area: tt
Drives: ttt
Product: ttt
Mesh size: tt
Feed quantity: tt
Input temperature: tt
Output temperature: t
(Output temperature: t
The particular advantages of our system are particular the simple,
adaptable construction and easy accessibility during inspections.
In the year 2002 a bed ash removal system with cooling vibrator
channels and hot ash metering valves was installed at an FBC
operator in Germany (WSW - Wuppertaler Stadtwerke AG). Another operator installed several bed ash removal systems to extend
his existing bed ash removal system in 2004.
A device for screening coarse ash was integrated into both plants.
The hot ash metering valve is connected to the ash chute and is
therefore involved in the boiler expansion. The other components
are set up on the ground. There is a difference in movement between the hot ash metering valve and the cooling vibrator channel.
This spot is sealed by means of a heatresistant fabric expansion
joint.
The installation shown here consists of 2 lines per boiler, each
with a hot ash metering valve, cooling vibrator channel and a water-cooled spiral elevator for both lines together for cooling to the
final temperature and for simultaneous vertical conveyin
FUFK 600 x 3000
3.000 mm
600 mm
5.3 m2
2 x JV 156-330, each 0.95 kW
Bed ash from FBC plants
0.2 - 1.0 mm
2.500 kg/h
750°, a maximum of 850°
< 300° after the FUFK
< 130° after WUFW)
Your benefit:
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Simple modular construction
Quick replacement of the cooling element
Integrated coarse ash sifting
High cooling performance with low spatial requirements
Reliable operation even for different ash compositions
Flexible machine version for varying throughput and cooling
capacities, can also be combined with other vibratory machines e.g. water-cooled spiral elevators
Easy integration into existing plants
JÖST GmbH + Co. KG · Gewerbestraße 28 - 32 · D-48249 Dülmen-Buldern
Telefon +49 (0)2590 98-0 · Telefax +49 (0)2590 98-101 · info@joest.com · www.joest.com