Refractory Materials in the Power Industry

1
Refractories for the Power Plant
2
Power Plant Refractory Material and Maintenance
Services
Refractories for Power Generation are available
from MMP Refratech in a variety of configurations
that can improve plant operations. To keep your
heat-treatment equipment performing at its best,
we also provide a wide range of maintenance and
repair services.
91 7720090588
info_at_mmpgroup.co.in
www.mmpgroup.co.in
3
Key Areas of a Power Boilers where Refractory
Materials that are Essential

• Combustion Chamber (Furnace)-
• Refractories used in the combustion chamber
  (furnace) play a critical role in maintaining
  thermal
• efficiency, durability, and safety in
  high-temperature environments. These specialized
  materials are
• designed to withstand extreme heat, thermal
  shock, and chemical reactions that occur during
  the
• combustion process. Refractories used in
  combustion chambers are Fire bricks, High alumina
  bricks,
• Refractory Castables, Ceramic Fiber Products. We
  provide all kind of refractory materials with
• customized.

91 7720090588
info_at_mmpgroup.co.in
www.mmpgroup.co.in
4

• Cyclone Separator-
• Cyclone separators are used in these industrial
  applications to extract particulates from air
  flows, hydro
• flows, and gas streams. For cyclone separators to
  withstand the high temperatures and abrasive
  conditions
• encountered during the separation process,
  refractory linings are essential. Common
  refractory materials
• utilized in cyclone separators include high
  alumina bricks, silicon carbide bricks, and
  abrasion resistant
• refractory castables. Proper selection and
  installation of refractories are essential to
  ensure the durability
• and efficiency of cyclone separators in
  industrial processes. 
• Furnace Walls-
• Refractories for furnace walls are essential
  components in industrial furnaces, providing
  thermal
• insulation, structural integrity, and protection
  against high temperatures and chemical reactions.
  These are
• similar to combustion chambers (furnace), only
  the difference is that in a furnace, only heat is
  produced
• with a single fuel, whereas in a combustion
  chamber, there is decomposition and various fuels
  are used.
• These materials are designed to withstand the
  harsh conditions within the furnace environment
  and ensure
• efficient heat containment and transfer.
  Refractory Fire bricks, High alumina bricks,
  refractory castables,
• and ceramic fiber products, are used as
  refractory materials to protect the walls.

91 7720090588
info_at_mmpgroup.co.in
www.mmpgroup.co.in
5

• Windbox
• A windbox is a part that is frequently seen in
  industrial furnaces and boilers. It functions as
  an air
• distribution chamber that supplies the burners
  with the combustion air. By ensuring that the
  right quantity
• of air is combined with the fuel for an effective
  and regulated combustion, it plays a critical
  part in the
• process of combustion. In industrial heating
  applications, the windbox aids in controlling the
  distribution
• and circulation of combustion air to provide the
  best possible temperature control, fuel
  combustion, and
• overall system efficiency. Common refractory
  materials used in windboxes include high alumina
  bricks,
• insulating firebricks, and castables with
  abrasion-resistant properties.
• Seal Pots
• Seal pots are utilized in industrial settings,
  such as steam turbines and pumps, and etc to
  manage and
• uphold the pressure of sealing systems. These
  vessels, often compact in size, function as
  containers for
• sealing fluid like oil or water, establishing a
  seal between moving and stationary parts in
  machinery.
• Fireclay, Aluminia are common refractory
  materials used to seal pots.

www.mmpgroup.co.in
info_at_mmpgroup.co.in
91 7720090588
6

• Fluidized Bed Combustion Boiler (FBC Boiler)
  Circulating fluidized Bed Combustion Boiler-
• A Fluidized Bed Combustion (FBC) Boiler is a type
  of boiler that utilizes a bed of solid particles
• (typically sand or limestone) suspended in an
  upward-flowing stream of air to facilitate
  combustion. In an FBC boiler, the solid particles
  are fluidized by the air, creating a "fluidized
  bed" that promotes efficient mixing of fuel and
  air for combustion. This process allows for
  better heat transfer, lower emissions, and
  improved fuel flexibility compared to traditional
  combustion methods.
• A Circulating Fluidized Bed Combustion Boiler is
  a variation of the FBC boiler where the solid
  particles in the fluidized bed are circulated
  back into the combustion chamber multiple times
  to enhance
• combustion efficiency. This circulating action
  helps achieve higher combustion temperatures,
  better fuel burnout, and reduced emissions of
  pollutants like sulfur dioxide and nitrogen
  oxides.
• Common refractory materials used in FBC and
  circulating fluidized bed boilers include high
  alumina
• bricks, silicon carbide bricks, castables, and
  ceramic fiber products.

www.mmpgroup.co.in
info_at_mmpgroup.co.in
91 7720090588
7

• Ash Hoppers and Discharge Systems-
• Ash hoppers and discharge systems in the power
  industry are components of boilers and furnaces
  that
• handle the collection and removal of ash
  generated during the combustion of coal or other
  solid fuels.
• These require basic refractories like Ceramic
  Fiber Products.
• Refractory Lined Expansion Joint-
• Expansion joints are structural components
  designed to absorb thermal expansion or
  contraction of
• building materials, pipelines, bridges, and other
  structures due to temperature variations, seismic
  activity,
• or settlement. These joints allow for controlled
  movement, preventing stress buildup and potential
  
• damage that could occur if materials were rigidly
  connected. The refractory which are high property
  for
• thermal resistance can be used here as fire
  bricks, insulation bricks.

www.mmpgroup.co.in
info_at_mmpgroup.co.in
91 7720090588
8

• Refractory Anchors and Support Structures-
• A Refractory Anchor is a specialized component
  used to secure refractory linings to the shell or
  structure of
• high-temperature equipment such as furnaces,
  boilers, and kilns. These anchors are essential
  for holding
• the refractory material in place and preventing
  it from shifting or falling off due to thermal
  expansion,
• contraction, or mechanical stress during
  operation. We provide complete in-house
  manufacturing and
• design services for customized anchor designs.
• Air Preheaters-
• A device that heats air before to a process with
  the main goal of boosting the process's thermal
  efficiency
• is an air preheater. So this area need to high
  refractories like alumina bricks, silicon carbide
  bricks,
• firebricks.

www.mmpgroup.co.in
info_at_mmpgroup.co.in
91 7720090588
9

• Overbed and Underbed Feeding Systems-
• Refactories used in overbed and underbed feeding
  systems play a critical role in high temperature
• industrial processes, particularly in boilers and
  furnaces. These feeding systems are designed to
  introduce
• solid fuel into the combustion chamber for
  efficient and controlled burning. Refractories in
  these systems
• are subjected to extreme temperatures, abrasion,
  and chemical exposure, requiring materials with
  specific
• properties to withstand these conditions
  effectively. Refractory materials used in overbed
  and underbed
• feeding systems include high alumina bricks,
  silicon carbide bricks, castables, and ceramic
  fiber products.
• Flue Gas Duct-
• Flue gas duct refractory lining is a specialized
  protective layer used in the flue gas ducts of
  industrial
• furnaces, boilers, and incinerators. This lining
  is designed to withstand high temperatures,
  corrosive
• gases, and abrasive particles present in the flue
  gas stream. By providing thermal insulation and
  erosion
• resistance, the refractory lining helps maintain
  structural integrity, optimize heat transfer
  efficiency, and
• extend the service life of flue gas duct systems
  in industrial processes. All kinds of Flue gas
  ducting
• refractory lining we provide for longevity and
  durability of the duct.

www.mmpgroup.co.in
info_at_mmpgroup.co.in
91 7720090588
10

• Plenum Chamber-
• A plenum chamber is a compartment or enclosure in
  a heating, ventilation, and air conditioning
  (HVAC)
• system where air is collected or distributed. In
  industrial applications, a plenum chamber is
  often used in
• combustion systems, such as furnaces or boilers,
  to distribute air or gases evenly to various
  parts of the
• system. The plenum chamber is mostly implanted in
  power plant as there are furnace, boiler are in
  used.
• So these plenum chamber required refractories to
  protect against thermal shocks, high
  temperatures.
• Fuel Feed Chutes-
• Fuel feed chutes are components used in
  industrial boilers, furnaces, and combustion
  systems to deliver
• solid fuel, such as coal, biomass, or waste
  materials, into the combustion chamber for
  burning. These
• chutes provide a controlled pathway for the fuel
  to enter the combustion zone, ensuring efficient
  and
• consistent fuel delivery for optimal combustion
  performance. Refractory materials used in fuel
  feed
• chutes include high alumina bricks, silicon
  carbide bricks, castables, and ceramic fiber
  products. Proper
• selection and installation of refractories in
  fuel feed chutes are essential for optimizing
  combustion
• efficiency, reducing maintenance costs, and
  extending the service life of industrial heating
  systems.

www.mmpgroup.co.in
info_at_mmpgroup.co.in
91 7720090588
11

• Secondary Air Nozzles-
• Secondary air nozzles are components in
  combustion systems that introduce additional air
  into the
• combustion chamber to ensure the complete
  combustion of fuel. They help improve fuel
  efficiency and
• reduce emissions by providing a secondary source
  of oxygen for the combustion process. Refractory
• materials used for secondary air nozzles in power
  industries are high alumina Refractory Castables,
  mullite,
• corundum, and many more.

www.mmpgroup.co.in
info_at_mmpgroup.co.in
91 7720090588
12
Conclusion Refractory materials are integral to
the efficient and safe operation of power plants.
Selecting the right type of refractory for each
area ensures the longevity and performance of the
equipment, reduces downtime, and enhances overall
productivity. By understanding the specific
requirements of each area within a power plant,
manufacturers can optimize their refractory
usage, leading to more sustainable and
cost-effective operations. MMP Refratech provide
various kind of refractory materials and
installation in power industry with customize
specifications to all above applications. For
more information on refractory materials and
their applications in the power industry, contact
us at MMP Refratech today. Our experts are
ready to help you choose the best solutions for
your specific requirements.
www.mmpgroup.co.in
info_at_mmpgroup.co.in
91 7720090588
13
Speak with Our Expert
Gate No. 161, Nr. Shell Petrol Pump, Chimbali
Phata, Chakan MIDC, Pune 410501.
91 7720090588
 info_at_mmpgroup.co.in
www.mmpgroup.co.in
91 7720090588
info_at_mmpgroup.co.in
www.mmpgroup.co.in