Paradip Port Trust (PPT) made a paradigm shift on
November 6, by loading 20,112 MT of blended coal on the vessel M.V.
Diamond Star, containing high grade coal of Eastern Coalfields Limited
(G4 grade) with low grade coal of MCL (G12 grade) at the ratio of 35
per cent:65 per cent to achieve a higher Gross Calorific Value (GCV)
suitable for Vallur thermal power station of NTECL situated in Northern
Tamil Nadu. Hither the thermal station used imported coal for generating
Thermal power plants blend high grade and low
grade coal to achieve the intended GCV at the power plant end. Mostly, the high
grade coal is imported from Indonesia. In India, high grade coal with high GCV
is available in ECL, CCL and SECL as against abundant supply of low grade coal
Possibly, for the first time in India, two
different grades of domestic coal were blended at a port to achieve the same
effect of blending with imported coal. This could be a move in the direction of
import substitution of Indonesian coal and will go a long way in saving
precious foreign exchange for the country.
In the blending process carried out at the
Mechanised Coal Handling Plant (MCHP) of Paradip Port Trust, two different
grades of coal from different collieries were homogeneously blended by the
mechanised process. Re-circulation of high grade coal from stack yard through
reclaimers and low grade coal unloaded directly from wagons will pass through a
common junction house to form blended coal as per the desired ratio.
Advantages of the blending process at MCHP,
PPT are shown in the accompanying box.
The Mechanised Coal Handling Plant of PPT,
commissioned in September 2001, is one of the premier bulk material handling
systems in Asia. The plant has state-of-art technology and serves the purpose
of exporting thermal coal to power plants in southern India. Since inception,
the plant has achieved many milestones in operational parameters like high
berth productivity and minimum turnaround time of vessels which are at par with
international standards. Further, dual loading of vessels using two ship
loaders simultaneously is one of the major achievements of the plant, highlighted