Gypsum storage:
Finely grinded form of
calcium sulphate / CuSo4.2H2O material industrially used for
enhancing adhesive strength of the cement, called as gypsum. Gypsum Storage at large scale is needed
since it is one of the prime resources in the cement industry. In purpose to
improve cement’s inherit qualities, performance and efficiency, a composite
gypsum storage solution needs to be followed systematically:
Gypsum Handling System:
Gypsum handling includes bunkering of gypsum, along with
its stacking & reclaiming in a very cautious way. Large Stackers are used to form two
different patterns- ‘cone’ , ‘chevron’ either on one or both sides of stacker. Stacking & reclaiming of coal is
not only limited to avoid risks (such as spontaneous combustion, self
oxidation, caking problem) to coal stockpiles but it must be carried out in
such a way to keep coal
effective. Gypsum
is usually stored under well-constructed
sheds ensuring its storage without deterioration and without contact to ground
and structural members, without exposure to moisture and heat, and away from
direct sun.
For environmental friendly
gypsum storage and production of an best outcome in cement industry, today
almost all out-performing cement plants use to store gypsum stockpiles under a
strong, durable, eco-friendly and solution-rich gypsum storage shed and gypsum dome.
Role of gypsum storage system in FGD/ Flue gas desulphurization unit:
The resources
like coal, petcoke, limestone contain a
significant amount of sulphur into them. In many large scale power
plants and cement plant (where the resource is Coal, petcoke, limestone etc), the problems arises from boiler or furnace where large volumes of So2 accumulation not only deteriorates air quality
of environment but also highly corrosive for handling equipments like stacks,
fans etc.
In order to extract So2
from flue gas, the mechanism of extraction employed is known as FGD or Flue Gas
Desulphurization. In Flue Gas Desulphurization, the chemical Techniques are
used to exclude sulphur di-oxide (So2) in exhausted flue gasses from
the Furnace/boiler. Some of the Chemical techniques used for FGD are 'Wet
Scrubing', 'Dry Scrubing', 'SNOX FGD' etc.
The output from flue gas
desulphurization is synthetic gypsum, which is carried out under FGD shed. For cement manufacturing,
this FGD storage product or
synthetic gypsum is supplied in crushed form for
further fine grinding with cement clinker and has many other
commercial applications in cement industry, bricks manufacturing etc.
-
Hindustan
Alcox Limited, New Delhi
No comments:
Post a Comment