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Multimax – Single pass, external furnace IBR boilers

Multimax is a single pass, smoke tube, boiler that can fire different types of fuels like coal, husk, baggase and wood. It is designed to provide low cost heating using agro based fuels.

The firing system can be modified for burning multi-type fuels. The horizontal stationary grate is used for firing fuels like coal, wood and baggase bales, whereas loose fuels like bagasse, husk and other agro wastes, are either fired on inclined grate or pneumatically, spread on a fixed grate. The furnace is also external to the boiler to enable combustion of high moisture agro-fuels like bagasse.

In the case of coal, firing an FD fan provides air for combustion.  Ash doors are provided to remove the ash from beneath the grate.


  • ptional water pre-heater available to enhance output and efficiency
  • Firing system can be modified for burning different types of fuel
  • Multi-fuel option – coal/agro-based fuels/wood
  • Provided with ID & FD fan for maintaining balanced draught
  • Provided with refractory baffle in combustion chamber to give flue gases more residence time
  • Provided with pad type hand holes for effective cleaning and better accessibility
  • Special ash-settling chamber reduces carryover and facilitates quick ash removal
  • Particulate emission controlled using Multicyclone, Cyclomax or Dust Collectors


  • Pressure: From 10.54 to 17.5 Kg/cm2 (g), (can be customised to higher pressure of 32 Kg/cm2(g)
  • Capacity -1 to 4 TPH, F & A 100 deg.C
  • Fuel – Coal Paddy Husk, Baled Bagasse, Wood Logs & Wood Chips
  • External refractory, lined furnace with fixed grate enables combustion of high moisture agro-waste fuels
  • Easily convertible for new fuels like petcoke
  • Special ash setiing chamber
  • reduces carry over
  • Pressure part with optimally sized tubes with spirals enhances heat transfers
  • Feed water pump with stainless steel internals, for trouble-free operations
  • Dependale operations and easy to maintain
  • Additional safety features and control mechani


  • Commercial complexes
  • Hotels
  • Hospitals
  • Industry
  • Institutes
  • IT parks
  • Laundry
  • Residential colonies

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