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Boiler Economizer Systems

Cain Industries offers an extensive selection of boiler economizers specifically designed to recover the lost BTU exiting from exhaust stacks.

Our broad line of economizers covers the spectrum of boiler sizes, ranging from very small hot water boilers with burner inputs of 200,000 Btu/hr to the large boilers delivering steam at 250,000 lb/hr.

In addition, Cain produces complete lines of boiler feedwater condensate tank and pump systems, exclusive sootblower assemblies, and unique modulating internal exhaust gas bypass systems.

 
Rectangular Tube Recovery System (RTR)

Boiler Economizer Systems Slideshow



Exhaust Applications

  • Steam Boilers
  • Hot Water Boilers
  • Hot Oil Heaters
  • Ovens and Dryers
  • Specific Combustion Sources

Equipment Variety

  • Boiler Economizers
  • Sootblowers
  • Circulating System Components
  • Storage Tanks
  • Modulating Internal Exhaust Gas Bypass Assembly

Anticipated Results

  • Tremendous fuel savings typically pay for equipment and installation within 1 to 3 years of average use.
  • Pollution reduction due to lowered annual fuel usage.
  • Longest exchanger life expectancy

System Function

Exhaust heat from combustion typically leaving the stack and into the atmosphere, is instead transferred from the exhaust stream by means of a Cain economizer. This lost BTU is now captured and saved to various heat sinks such as boiler feedwater, cold makeup water, process water, swimming pool water, glycol, and thermal fluids.

Combustion source fuel types including natural gas, propane, digester gas, diesel fuel and No.2-6 fuel oil are all heat sources that can be retrofitted with Cain heat exchangers.

Proposal Considerations

Consider Cain for cylindrical or rectangular stack connections, large or small boilers, a particular pinch point requirement, stack or liquid temperature control, special heat sink requirements, special heat transfer metallurgy requirements, specific maintenance concerns, optional equipment requirements, installation space and weight concerns, package system requirements.

Product Application

Combustion Sources: Steam boilers, hot water boilers, dryers, ovens, hot oil heaters

Rectangular Tube Recovery System

Combustion Capacity: 5,000 - 250,000 pph (300,000,000 BTU/hr maximum input approx.)
Entering Gas Temps.: 300 - 800°F
Heat Sink Types: Boiler feedwater, makeup water, hot water return hot water storage tank, condensate tank, process water
RTR (download PDF - 1.6mb)

Fin Coil Recovery System

Combustion Capacity: (50 - 10,000 scfm) 40-500 BHP
Entering Gas Temps.: to 800°F
Heat Sink Types: Boiler feedwater, process water, thermal fluids, run-around systems
FCR (download PDF - 160kb)

Boiler Economizer

Combustion Capacity: 40 - 800 BHP
Entering Gas Temps.: 300 - 700°F
Heat Sink Types: Boiler feedwater, hot water return, hot water storage tank, condensate tank, process water
B-Series (download PDF - 160kb)

Energy Manager

Combustion Capacity: 200,000 - 6,400,000 BTU/hr input
Entering Gas Temps.: 300 - 700°F
Heat Sink Types: Boiler feedwater, hot water return, hot water storage tank, condensate tank, process water
EM (download PDF - 170kb)

Finned Tube Recovery System

Combustion Capacity: 100 - 30,000 scfm
Entering Gas Temps.: 325 - 800°F
Heat Sink Types: Boiler feedwater, process water, hot water return, thermal fluids, run-around systems
FTR (download PDF - 490kb)

Packaged Boiler Feed Systems

Cain Industries produces feed systems with feedwater pumps, water softeners, and chemical feed all pre-piped and pre-wired. This packaged system minimizes installation and startup expenses.
Boiler Feed System (download PDF - 400kb)


Cain Industries is ASME and National Board Certified