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Ways to Increase Industrial Boiler Efficiency

  • Date Submitted: 04/12/2015 11:22 PM
  • Flesch-Kincaid Score: 45.3 
  • Words: 272
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There are a number of ways to increase industrial boiler efficiency that can be implemented relatively easily. Most of the options enumerated below do not require any process or site modification and many of the changes can be combined for additional efficiency. The effectiveness of these changes will always vary according to the site where they’re implemented.
1. Replacement Boiler Burners

Over time, boiler burners begin to deteriorate and lose efficiency. At a certain point, it makes sense to replace or retrofit them. Whatever type of boiler you have or fuel you burn, there are many burner options to consider when contemplating a replacement. If you aren’t in a position to opt for new boiler burners, retrofits can provide significant savings at a fraction of the cost.
2. Air Preheaters

Air preheaters recover waste heat from flue gas and then use it to preheat combustion air. There are two main types of preheaters: recuperators and regenerators. A recuperator system is installed in a boiler stack and transfers heat from outgoing gas to incoming air. A regenerator, on the other hand, includes heat storage sections that transfer heat from flue gas to combustion air.
3. Boiler Economizers

Much like preheaters, boiler economizers take waste heat and transfer it to a boiler’s feedwater, rather than combustion air. Preheated water is obviously closer to the temperature needed to produce steam, so this saves energy when the preheated feedwater enters the steam drum or furnace. Economizers also offer the added benefit of reducing the chance of thermal shock by minimizing water temperature fluctuations.

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