Page 16 - CleanIndiaJournal June Digital Issue

Cover Story

n a cement plant, dust exists in system, preventing pollution and
two forms – in the stack, and also avoiding raw material losses”,
as suspended fugitive dust. As shared Nanda.
far as the stack is concerned,
Iit needs to have advanced Fugitive dust Core personnel like
pollution controlling solutions.
Nowadays, efficient baghouse Spills are common when a control room operators,
filters are the norm. If the dust cement bag is dropped in the those dealing with
particles are bigger, multi-cyclones packaging area or gets torn in
or electrostatic precipitators can be the loading area. Suspended dust large motors and
considered. generated by this can be harmful critical instrumentation
to open-to-the-air parts of the
production equipment like bearings personnel are still
Baghouse filters and gearboxes. To avoid this, dust from the company;
Earlier, when technology was needs to be cleaned up immediately. security, housekeeping
not as advanced, there used to be Difficult-to-clean areas – such as
cyclones, which have an efficiency under the conveyor belt – should be and alternative power
of around 75%. Then electrostatic identified in advance, and cleaning generation tend to be
precipitators came in, with an SOPs designed specifically for
efficiency of over 99.5%, but these them. outsourced.
are sensitive to power fluctuations. “To prevent escape of dust, the
Baghouse filters are designed in a maximum possible parts of the Ketan Vasavada
way that negative pressure draws plant are made covered – from
dust-laden air to pass into them. storage areas of raw material and
The size of their apertures is less alternative fuels to conveyor belts”,
than three microns, so practically said Solanki.
all the dust in the air is collected. An adequate draught needs to
“Bag filters are present at be maintained in the system to
grinding units, loading areas and ensure that the powder-like dust
other parts where fugitive dust does not escape. Negative pressure
can be dispersed. The collected is maintained at draught points, so
dust is discharged back into the that such materials will be sucked

JUNE 2023•Clean India Journal
16 www.cleanindiajournal.com