Technicians from UK turbine manufacturer Peter Brotherhood have just
completed commissioning the largest steam turbine ever installed in an
African sugar mill.
The 20 MW turbo-alternator set was
designed and manufactured by Peter Brotherhood for contractor PMS
which is helping to refurbish the mill in Hippo Valley near Chirezdi,
Zimbabwe, owned by Hippo Valley Estates.
The 50 tonne turbine was lowered into
place within the mill through a hole created for the purpose in the
roof of the power house. Staff from Peter Brotherhood and PMS then
installed and commissioned the machine.
The back-pressure turbine will use
steam raised from burning bagasse - the waste material left after the
processing of sugar cane - to generate the millís electrical power
and the exhaust steam will be used in the sugar refining process. This
is an extremely 'green' form of power generation as all the CO2
released during the combustion of the bagasse is absorbed again the
following year by the growing crop.
Peter Brotherhood won the contract
because of its extensive experience of designing, manufacturing and
installing such machines. The company has more than 500 steam turbines
operating in sugar mills around the world, including more than 100 in
The machine in Hippo Valley is almost
50 per cent bigger than any similar turbine known to be operating in