Air Pre-heater

We are Making and Supplying Air Pre-Heaters in Pune, Maharashtra, India. Air Pre-heater is used to heat air and pass it to the furnace, the preheated air facilitates the burning of poor grade of fuel. Thus, permitting a reduction in excess air that is improving the efficiency. The purpose of air pre-heater is to recover the heat from boiler flue gas, which increases the thermal efficiency of the boiler by reducing the useful heat lost in the gas
We also have facility of manufacturing steam coil air pre-heater with IBR approval.

Design Considerations:
Maximum utilization of waste energy
Design with minimum pressure drop on gas side to avoid addition of new ID fan
Check for upset condition with respective min tube metal temp and acid dew point
Optimum heat transfer coefficient
Layout to suit available space
Effective online tube cleaning
Design features:
Proven performance
Proven construction
Rugged
Ease of operation
Ease of maintenance
Flexibility in layout a can be constructed to suit layout
Careful selection of a sleevesa for specific process conditions
Use of highly proven correlations for heat transfer and pressure drop calculations
Careful check for gas pressure drop with optimum heat transfer coefficient need to keep low pressure drop to satisfy system design
Check for various part load - to confirm safe operating range. Keep tube metal temp. below dew point in all operating cases
Ease of installation, operation and maintenance in available space
All wet surface (heat transfer) area of Cast Iron (Specific Cases)
Corrosion protection for wet surface, (non heat transfer) a refractory, inhibitor paint
Robust design - check for wind, seismic load, operation, external piping
No thermal stresses - free expansion provisions air and gas side
Ease of operation
Ease of maintenance


Accessories:
Isolation dampers, control dampers, shutoff blades
Metallic expansion joints
Explosion doors-dead weight, spring type
Steam soot blowers - motor operated
Gas inlet, outlet box
Acid resistant refractory, chain anchors
Foundation bolts


Operation & Maintenance:
Correct installation to avoid thermal stresses
Soot cleaning by using soot blower regularly with designed steam conditions
Intact mineral wool cladding on casing and inlet / outlet ducting
Regular checkups of acid resistant refractory
Strict monitoring of outlet flue gas temperature
Regular draining and cleaning of acid from bottom nozzles

Applications:
Furnace oil fired boilers
Carbon black plant waste heat recovery
Oil fired thermic fluid heaters
Oil fired metallurgical furnaces
High sulfurous fuel fired boilers like: pet coke, MSW etc.
Ha SOa making process
SOa making process - like sugar industry, etc.A
Oil fired engine-generator sets
Biogas (containing Ha S) fired engine-generator sets
Solid fuel fired boilers with sulphur at lower temperature end
Oil fired thermic fluid heaters
Oil fired furnaces - metallurgical industry
Fired Heater in oil - refineries