PAT working successfully in Taiwan
Figure 1: Taoyuan incinerator plant
After a three year project, the first PAT plant for storing and
transporting sewage sludge and incinerating it in a waste
incineration plant was handed over to Lurgi Entsorgungs GmbH on
17.08.2001 and hence to the end customer, Evergreen in Taoyuan,
Taiwan.
Lurgi Entsorgungs GmbH won the order to build a turnkey
incineration plant, on a green field site in Taoyuan, Taiwan in
1999. This plant contains a separate section for incinerating
dewatered sewage sludge.
Lurgi gave the order (to supply a turnkey solution) to PAT –
Putzmeister AG.
The total amount of domestic waste throughput is 1,350 tonnes per
day or 1,200 tonnes of refuse and 150 tonnes of sludge.
Putzmeister supplied a complete turnkey plant including injection
nozzles into the incinerator. It was a significant challenge as this
was the first time in Asia that Putzmeister had to buy local
services for which Putzmeister took 100 % responsibility. Our local
partner supplied the steelwork for the silos, pipework as well as
the complete assembly and installation.
Figure 2: Taiwanese welder
Description of the scope of supply:
Figure 3: Flow chart of the entire plant
Please click on the image
to enlarge it
The sludge is transported into the acceptance building in trucks.
There it is emptied into the 50 m³ capacity reception silo supplied
by Putzmeister. A high density solids pump, model KOS 1070, is
installed beneath the acceptance bunker. This conveys the sludge
into the holding silo at a rate of
30 m³/h. A foreign body separator is built into the pipeline. This
retains foreign bodies measuring over 50 mm found in the sludge,
thereby preventing damage to the incineration line.
| The holding silo has a storage
capacity of 250 m³. This helps to ensure that there is sufficient
sludge for continuous incineration even during times when no
sludge is delivered, e.g. at weekends.
Two high density solids pumps, model KOS 540, are
installed beneath the holding silo. These two pumps convey the
sludge into the two incinerators. The conveying distance on each
line is 100 m.
The sludge is distributed via 4 timed valves to 4 separate
acceptance openings so that the sludge is evenly distributed
across the entire width of the incineration zone.
The incinerator uses 'grate firing'. |
Figure 4: 2 x KOS 540 under the holding silo |
| Further information about these
applications can be found in brochure IP 3049.
Figure 5: Sewage sludge distribution and incinerator admission
station |
A vast amount of information was exchanged by e-mail or fax over
our information superhighways. It was even possible to establish
personal contact using video conferencing despite time differences.
PAT fulfilled this order on time and without any problems to the
satisfaction of our customers and handed over the plant. Thanks to
the help provided by our QS department, we were also able to
guarantee that the quality requirements were also fulfilled by our
local manufacturer.
The order team showed that Putzmeister fulfilled the requirements
of a global player. Therefore we say a big 'thank you' to all those
who took part.
Christine Frischmuth
e-mail: FrischmuthC@pmw.de
Tel.: +49 (0)7127 599 659
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