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1. Pneumatic conveying

2. Pneumatic conveying, known as air conveying, is a specific application of fluidization technology that uses
the energy of the air flow to transport granular and powder materials along the direction of the air flow in a
closed pipeline.
Generally , Air flow is used for
conveying but 𝑁2is used in the
station with Fire & Explosion
risk.
Fluidization is a process similar to liquefaction whereby a granular material is converted from a static solid-
like state to a dynamic fluid-like state.
Introduction

3. According to Working principle:
o Suction type
o Pressure Type
Dilute phase conveying: The conveying distance is basically within 300m. The dilute phase conveying
operation is simple, no mechanical rotating parts, low conveying pressure, no maintenance, and maintenance-
free. (Most commonly used method)
Dense phase conveying: The conveying distance can reach more than 500m, which is suitable for long-distance
conveying, but dense phase conveying has more valves and more pneumatic and electric equipment.
Suction-pneumatic conveying is to suck the atmosphere and materials into the pipeline together, and use low-
pressure air current for conveying, so it is also called vacuum suction.
Pressure-feeding pneumatic conveying system uses compressed air higher than atmospheric pressure to push
materials for conveying system
According to Density of particles in the conveying pipe
o Dilute phase
1. Positive pressure system 2. Negative Pressure System
3. Combination of Positive-negative system
o Dense phase
o Air Conveying
Types of Pneumatic system

4. 1. Blower/Compressor
2. Feeding Device
3. Filter
4. Pipe line
5. Receiving Hopper
6. Silo
Basic Parts

5. Working Principles
Pneumatic system consist of compressed fluid, means of feeding materials in the pipeline
and a receiving hopper.
The Blower /Compressor supplies
compressed fluid (generally air) to the
conveying system. This compressed fluid
will travel towards less pressure side (in
Positive pressure system). The solid material
is feed into the air stream by means of feeder
device like rotary valve or screw feeder.
There by solids are conveying to another
location by travelling air though the pipeline.
The product is separated from conveying air by using filter
at the destination.

6. o Manufacturing industries, Automotive industry, machine tool manufacturers and domestic and
commercial appliance manufacturers.
o Processing industries, such as chemical, petrochemical, food processing, textiles, paper, etc.
o Used in the brake system of automobiles, railway coaches, wagons and printing presses.
o Application of Pneumatics systems is widely in industrial robots
Why use Pneumatic system?
• First and foremost, pneumatic systems are highly effective. It is possible to move compressed air via
pipes without being limited by distance. Pneumatics can also readily provide source power since
there is an endless supply of air in the environment.
• Compressed air is cost-effective because it may be used and then released back into the atmosphere
without further processing. This makes pneumatic systems a very eco-friendly choice, especially
because they don't emit any pollutants when they're in use.
• The main benefit of using pneumatic systems is their cost-effectiveness. Owing to the lower
maintenance fees stated earlier, their longevity assures that costs of upkeep and repair are
significantly lower than most other systems available on the market.
Uses of Pneumatic system

7. • Selection of conveying modes
• Quicker startup
• Intuitive operation
• Connectivity
• Remote diagnostics
Other Benefits & Disadvantages
Benefits
Disadvantages
o Larger dust collection system required.
o Some materials are difficult to convey.
o Require more power to achieve proper air pressure.
o Not ideal for combustible bulk solids.

8. o Pneumatic conveying systems use compressed air, or gas, to transfer bulk materials, like powders and
granules, from one processing center to another.
o The positive or negative pressure in a pneumatic conveying line moves materials safely with little
damage or loss.
o Pneumatic conveying systems use pipes or ducts to transport materials on a stream of air.
o Materials transported by pneumatic conveying systems include cement, fly ash, starch, sugar, salt, sand,
plastic pellets, oats, polymers, lime, soda ash, plastic resin, plastic powder, dry milk, and feed.
o Pneumatic conveying systems are widely used because of their efficiency, cost effectiveness, and
flexibility.
Conclusion

9. Thank You