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February 2017
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MechChem Africa
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15
Dust collection system
upgrade for lime plant
Environmental solutions business unit
John Thompson Air Pollution Control
(APC), a division of ACTOM, recently won a
fast-track turnkey contract to upgrade the
dust collection system of one of the main
kilns at Idwala Lime’s production plant at
Danielskuil in the Northern Cape.
The new system, for which John
Thompson APC was awarded the contract
mid last year, was delivered on schedule at
the end of September 2016 to enable it to
be installed and ready to go into operation
at the beginning of November.
The contract, worth over R30-
million, involved converting the original
dust collection system comprising an
electrostatic precipitator (ESP) serving
the plant’s No 7 kiln to a reverse pulse bag
filter system capable of reducing emission
levels tobelow20mg/m
3
inaccordancewith
environmental legislation due to come into
effect in 2017.
“In redesigning the dust collection
system for our bag filter system, the casing
of the ESP is retained to be adapted to
house the tubular filter bags. This is a cost-
saving solution for the customer without
any reduction in performance efficiency,”
commented Raymond Hopkins, project
manager on the contract.
The bag filter systemwill be operated by
a 2 050 mm diameter double-inlet double-
width customised induced draft centrifugal
fan designed and manufactured by
ACTOM’s specialist ventilation
fans business unit, TLT ACTOM.
The fan, made of highly wear-
resistant Weldox 700 steel will
be driven by a 670 kW electric
motor.
ACTOM (Pty) Ltd is the
l a r g e s t ma nu f a c t u r e r,
solution provider, repairer
and distributor of electro-
mechanical equipment in
Africa, offering a winning
and balanced combination
of manufacturing, service,
repairs, maintenance, projects and
distribution through its 40 outlets
throughout Southern Africa.
ACTOM is also a major local
supplier of electrical equipment,
services and balance of plant
to the renewable energy
projects. It alsoholds numerous
t echno l ogy, d i s t r i bu t i on
and value-added reseller
agreements with various
partners, both locally and
internationally.
q
⎪
Plant maintenance, lubrication and filtration
⎪
A CAD representation of the
reverse-pulse bag filter system
installed by John Thompson APC
at Idwala Lime’s Danielskuil plant.