Boilers are key components of thermal power plants. They convert the chemical energy contained in fossil fuels such as coal, oil and gas into thermal energy through combustion reactions and use the resultant high-temperature and high-pressure steam-based thermal energy for supplying steam turbines used in power generation.

Mitsubishi Power supplies only boilers of the highest quality and performance, built on a vast breadth of experience and state-of-the-art technologies.

Types of Boiler

While there are various types of boilers depending on the amount, pressure and temperature of the steam they produce and the fuel they use, they generally come under one of two categories: drum boilers and once-through boilers. In a drum boiler, to ensure reliability of the furnace area, there is a drum that continually supplies water to the furnace system. A once-through boiler is a simpler structure that does not require the drum function.

In addition to once-through boilers, drum boilers and heat recovery boilers primarily used in thermal power plants, Mitsubishi Power also handles a wide range of products used in industrial applications, including bubbling fluidized bed boilers (BFB) and chemical recovery boilers used by paper manufacturers.

Boiler Services

Mitsubishi Power provides many boiler services, including uprating, parts replacement, maintenance, and inspections. See what we can do for you.
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Low NOx burners

Mitsubishi Power maintains proprietary boiler technologies designed to achieve high reliability and reduce environmental impact. We offer low NOx burner technologies for solid, pulverized fuels by combustion method and different firing systems.

Coal to Gas Conversion

Mitsubishi Power offers boiler conversion programs to achieve CO₂ emission reduction targets. A boiler conversion involves a modification of the burner technology and a change of coal or oil to gas. While switching to gas as a fuel does not increase the efficiency of the steam plant, it does reduce CO₂ emissions.


  • Reduction in CO2 emissions in excess of 40%​
  • Least expensive way to transition from coal to a more environmentally friendly fossil fuel​
  • Bulk of the work associated with conversion/additions can be performed with the unit in operation​
  • Final tie-in outage in the range of 30 days​
  • Minimum impact to operating staff (Simplified, more reliable unit operation)​