• L&T MHPS Boilers Private Limited
  • L&T - MHPS Boilers Private Limited

Boilers

  • Pictures

Offerings

    • Supercritical boilers of 500 MW and above range
    • SH & RH temperature up to 605 degrees Celsius
    • Low NOx burners (A-PM) as standard
    • Two pass design with divided back pass
    • Front and side mill arrangements
    • Vertical wall as standard
    • Spiral wall can also be offered

Features and Merits

Sr. No.FEATURESMERITS
A FURNACE WALL
 
  • Vertical wall construction as standard
  • MHPS has largest number of sliding pressure vertical wall supercritical units in operation
  • Rifled tube construction In high heat flux zone
  • Easier manufacturing and simpler construction
  • Low mass flux compared to spiral wall and hence lesser pressure drop
  • Lesser field joints
  • Less slag accumulation
  • Less thermal stresses
  • Simpler supporting arrangement
  furnance_pic1 fig2a
B FIRING ARRANGEMENT
  Circular corner firing (CCF) with twin fire vortex as standard
  • Less steam temperature imbalance between left and right leads
  • Uniform heat flux in the furnace
  • Less burner heat input
  firingarrangement
C COAL FIRING SYSTEM
  Use of MACT (Mitsubishi Advanced Combustion Technology) with APM (Advanced Pollution Minimum) burner and additional air port
  • High ignition ability under low O2 condition
  • Reduced NOx emmisions
  • Reduced unburn carbon loss
  • Low excess air (15%) increases boiler efficiency
D R H TEMPERATURE CONTROL
 
  • Use of gas biasing damper in the second pass as primary control
  • Additional tilting mechanism for burners as a secondary control
  • Interstage attemperation as emergency control
  • Pressure control of RH temperature is achieved
  • No RH spray under steady state operation
E SUPERHEATER CONFIGURATION
 
  • Use of three stage superheater
  • Use of inter stage attemperation
 Better SH steam temperature control
F USE OF ADVANCED RELIABLE MATERIALS FOR HIGH TEMPERATURE APPLICATIONS
 
  • CC2328 (SA213 UNS S30432) in SH & RH applications
  • Above material has been devloped by MHPS in collaboration with tube manufacturers for supercritical and ultra supercritical boilers
  • Non-usage of T91 materials in heating zone
  • Better creep properties
  • Reduced steam oxidation leading to higher availability as compared to T91 materials

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