Flue gases from furnaces and air from
exhaust ventilation systems are thoroughly cleaned in a state of the art
pollution control system. Flue gases pass through settling chamber, cyclone, cooling tower, bag house by induced draft and after that through scrubber to
stack with forced draft.
All equipments in the dust collection system have to be properly operated, cleaned, and maintained to control dust particles. The
remaining emission is then treated to remove flue gases. Finally the pollution free air, as per international norms, is sent to the atmosphere through a stack.
Equipments Commonly Used
Settling Chamber:
It is used to reduce the inlet loading of particulate matter to downstream
collection devices by removing larger, abrasive particles. Settling chambers are
also referred to as gravity settling chambers or expansion chambers.
In the expansion chamber, the velocity of the gas stream is reduced
significantly, as the gas expands in a large chamber.
The sudden reduction in velocity forces larger particles to settle out of the gas
stream. To improve settlement efficiency in this settling chamber, baffle plates
are provided.
Cyclone:
In a Cyclone, the particulate matter is removed by
centrifugal and inertial forces. This is induced by forcing particulate
laden gas to change direction.
It is provided after the settling chamber to collect the
smaller particulate matter that could not be collected in the settling
chamber.
Typical gas flow rates in a cyclone varies from 0.5 to 12 cubic meters per second, depending upon the
particulate matter to be removed.
Cooling Tower:
To cool down the flue gases down to a temperature that does not
burn the filter bags in the Bag House in the pollution control setup. The design
is based upon the heat transfer through conduction, convection and
radiation.
There is considerable zigzag movement of flue gases in the cooling tower which
results in some particulate matter settling down. This matter is removed through
valves provided at the discharge end.
Air Filter Bag House:
“Air Filter Bag House” contains 100% polyester Non-woven
fabric filter bags fitted in the bag holding cage. The bag house is equipped
with pulse jet type cleaning arrangement. Pulsejet cleaning unit is designed for
continuous operation that operates at appropriate pressure of compressed dry
air.
Top view of the Bag House &
Pulse Jet Cleaning System
Dust at Filter Bag surface
Dust removed by Pulse jet
Pulse Jet-cleaning mechanism and non-woven polyester filter bags are provided for high efficiency of filtration at
considerably high temperatures. All the compressed air nozzles are controlled with the help of electronic device to control pulse time and time interval that gives continuous better cleaning
by ensuring efficient and best performance of the bag house.
Scrubber:
A vertical type chamber in which flue gases enter from the
lower end and move upwards. The air velocity is also brought down. The
Sulfur Di-Oxide in the flue gases react with the water being sprayed in
the chamber and form Sulfurous Acid which flows out into a water tank with
some fine particulate particles. The water is circulated with the help of
a pump and sprayed through venturi nozzles.
The Scrubber is lined with PVC from inside to reduce
corrosion. The acidic water is neutralised in a sequential chambers
setup.
Magnabiz Corp provides
well-designed pollution control system to meet international norms. We ensure world-class services for plant erection and commissioning with our experienced engineers in the minimum possible
time. Our team works with latest technological
skills and engineering methods.
We never compromise with the quality of the
product.
Ensuring safety of the workers and human beings living in the surrounding
areas remains our foremost priority. All the pollution
related equipments are designed and engineered before fabrication to
customize and meet out the toughest rules of air
pollution control.
