HEAT RECOVERY STEAM GENERATOR

HEAT RECOVERY STEAM GENERATOR

Heat Recovery Steam Generators HRSGs are widely applicable in Combined Cycle Power Plants, Oil, Gas, and Petrochemical Industries, Mining Industries, Steel Mills, and Production Units of Copper, Aluminum, etc. MAPNA Boiler Company has the capability of designing, supplying, manufacturing, installing, erecting, commissioning, and providing consulting and aftersales services for various types of HRSGs based on new technologies in the world. In power plants, this company’s HRSG products with peerless abilities in the country can be installed and erected downstream of E-, F-, and H-class or larger Gas Turbines and feature Horizontal- and Vertical-type configurations, single, double and triple pressure, with and without Reheat, and Supplementary Firing equipment.

All components of the boilers, especially pressure parts, are built at MAPNA Boiler’s factories using modern machineries and test equipment in compliance with the world’s latest edition of applicable standards such as ASME. Aiming at fulfilling new power generation market needs, the company signed a Technology Transfer and License agreement in 2016 with John Cockerill, formerly Cockerill Maintenance & Ingénierie (CMI), in Belgium large HRSGs downstream of F- and H-series Gas Turbines are thereby granted as Licensed Products.

In case of gas turbine outage due to maintenance, our HRSGs can take the advantage of Fresh Air Firing system, consisting of air fan and burner in general, when the steam generators can keep producing steam independent of GT so-called Stand-Alone operation. MAPNA Boiler Company is able to equip HRSGs with this system making the design and manufacturing of all the components required together in order to meet projects’ demands.

Furthermore, MAPNA Boiler’s HRAG products can be operated in power plants burning gas and gas oil fuels in gas turbines. The application of combined heat and power (CHP) generation (Cogeneration) in addition to combined cycle power plants is the house for the company’s HRSGs. The way it takes a part of the steam produced is utilized for seawater desalination in Multi-Effect Distillation (MED) units or for process consumptions in petrochemical plants. Qeshm’s Water and Power Project is an actual sample of a CHP application for the production of potable water the company involved in.

 

MAPNA Boiler Company’s Capabilities in HRSGs:

Ability to design HRSGs with different pressure levels, with/without Supplementary Firing and Reheater

  • Ability to design HRSGs for fast startups and cyclic operations
  • Ability to design HRSGs’ heating surfaces with configurations and materials well-suited for the type of operation
  • Ability to design Deaerators and Feedwater systems
  • Ability to design Supplementary Firing system of the highest efficiency and lowest emission of air pollutants
  • Ability to design HRSGs for various fuels burnt in gas turbines including gas and gas oil
  • Ability to design HRSGs equipped with systems for maintaining HRSGs in hot condition for fast startup and the prevention of corrosion in gas-oil-firing cases of gas turbine operation
  • Ability to design condensate preheater recirculation pump systems, presented ECO+, to improve gained power and efficiency in gas turbine gas-oil-firing cases of operation
  • Ability to design HRSGs according to steam cycle needs for the highest possible steam production and the furthest possible power generation in steam turbines
  • Ability to perform stress analysis and flexibility calculations for reducing pressure parts’ stress in normal and transient (startup, load change, etc.) operations and to design the components for desired lifetime
  • Ability to perform HRSGs’ lifetime calculations and to improve critical points
  • Ability to design HRSGs’ drain and blowdown systems appropriate for fast startups
  • Ability to design HRSGs’ blowdown heat and mass recovery system in new and existing power plants
  • Ability to design and supply HRSGs with a completely automatic startup and operation
  • Ability to design and supply HRSGs with Fresh Air/Supplementary Firing single/dual-fuel and affording different capacities of firing
  • Ability to design and supply Stand-Alone HRSGs, vertical and horizontal HRSGs capable to be operated in power generation, cogeneration, and repowering uses.
  • Ability to design the entire steam production system including condensate water transport to HRSGs, deaeration, boiler feedwater system, and steam transport toward consumers all together in thermal design for steady and transient conditions, mechanical, process, piping, chemistry, steel structure, electrical, and control and instrument design using different design softwares and knowledge and experiences acquired inside our organization over abundant projects designed and executed and granted technology transfer licenses as well.
  • Ability to design and procure SCR for air pollution reduction
  • Ability to offer optimum design for steam drum internals
  • Ability to design and apply online condition monitoring systems
  • Ability to design, size, and procure boiler auxiliary equipment including:
    • Types of Attemperators/Desuperheaters for controlling steam temperature and improving startup conditions
    • Transport system of condensate water to HRSGs and supply system of boiler feedwater in different plans like Variable Speed Hydraulic Coupling and Variable Frequency Drive to optimize the power plant internal consumptions
    • Diverter/Guillotine/Stack Dampers
    • All Motor Operated Valves (MOVs), Control Valves, and Safety Valves used in HRSGs
    • Letdown station systems for the supply of low pressure steam required for the cycle or steam bypass systems
    • Chemical Dosing systems and Sampling