PP Boilers

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OTHERS

Compliance

IBR-certified and ISO 9001:2015 compliant

Pressure Parts

Operating pressure up to 120 kg/cm²

Fans (FD, ID, PA)

Flow rates up to 500,000 m³/hr

Temperature

Up to 540°C (for superheater coils)

Steam/Sonic Soot Blower

A Steam or Sonic Soot Blower is an essential cleaning device used in boiler systems to remove soot, ash, and slag deposits from heat transfer surfaces such as economizers, air preheaters, superheaters, and furnace walls. These deposits, if not removed, reduce boiler efficiency and can cause overheating or corrosion. Soot blowers operate without requiring boiler shutdown, making them vital for maintaining continuous and efficient operation in steam-generating plants.

PP Boilers provides a range of steam-based long/short retractable and rotary soot blowers as well as non-contact sonic soot blowers engineered for various boiler designs and fuel types.

Key Features:

  • Deposit Removal: Dislodges soot and ash build-up on heat exchanger surfaces to restore thermal efficiency
  • Fuel Efficiency Preservation: Prevents excessive fuel use caused by fouled heating surfaces
  • Heat Transfer Optimization: Maintains clean surfaces for consistent heat absorption
  • Online Cleaning: Enables in-service maintenance, avoiding costly shutdowns

Technical Specifications

  • Types: Steam-operated (retractable, rotary, wall blowers), Sonic (acoustic horn type)
  • Steam Pressure (for steam soot blowers): 15–21 kg/cm²
  • Steam Consumption: ~750 kg/blow depending on length and type
  • Operating Frequency (sonic): 60–300 Hz acoustic range
  • Control: Manual, semi-automatic, or PLC-based sequencing
  • Nozzle Material: SS 304/310/316 or wear-resistant alloys
  • Tube Reach (Retractable Type): Up to 8 meters (economizer or superheater zones)

Steam/Sonic Soot Blower

Key Features:

  • Uses high-velocity steam jets directed through nozzles to dislodge soot
  • Available in rotary, long retractable, and wall-mounted variants
  • Precise nozzle rotation and travel ensure full surface coverage
  • Controlled via programmable sequence controllers for zone-wise cleaning
  • Suitable for high-dust environments in coal, biomass, or RDF-fired boilers
  • Utilizes pulsed sound waves to generate pressure fluctuations that remove loose ash without physical contact
  • Ideal for low-dust areas like baghouses, ESPs, or low-load operation zones
  • Consumes no steam or compressed air—energy-efficient and low maintenance
  • Longer equipment life due to absence of moving parts or wear mechanisms Effective in high-humidity environments where traditional blowers underperform

OTHERS

RALVs

RALVs are mechanical devices used to regulate the controlled discharge of bulk solids (like ash or dust) from hoppers, ESPs, or bag filters while maintaining air/gas pressure seal between two process zones.

Key Features:

  • Precision-machined rotor for leak-proof operation
  • Maintains system pressure while enabling material flow
  • Handles abrasive materials like fly ash, coal dust, or biomass fines
  • Available in cast iron, MS, or SS construction

EXPANSION BELLOW

Expansion bellows are flexible connectors used to absorb thermal expansion, vibration, and misalignment in ducting and piping systems—especially in high-temperature flue gas paths of boilers.

Key Features:

  • Compensates for axial, lateral, and angular movements
  • Made from stainless steel or fabric (for gas ducts)
  • Reduces mechanical stress on fans, ESPs, and ducting
  • Custom-designed for pressure, temperature, and movement ranges

 

DAMPER

Dampers are flow control devices installed in ducts to regulate or isolate airflow and flue gas in boiler systems. They are critical for combustion control, draft regulation, and system safety.

Key Features:

  • Types: Guillotine, Butterfly, Multilouver, and Slide Gate
  • Operated manually, pneumatically, or via electric actuators
  • Designed for high-temperature and high-dust flue gas service
  • Ensures tight sealing with minimal leakage for process control

STEAM COIL AIR PRE-HEATER (SCAPH)

Steam Coil Air Pre-Heaters (SCAPH) are used to preheat combustion air by using low-pressure steam or condensate in cold climates or during boiler start-up, improving boiler efficiency and supporting stable combustion. PP Boilers manufactures SCAPH units that are compact, reliable, and designed for efficient thermal transfer with minimal maintenance.

  • Types: Horizontal or circular coil type.
  • Material: Carbon steel frame with coils in SA 210, 213 T11 / T22, SS 304/316.
  • Design Pressure: Up to 10 kg/cm² (g)
  • Temperature Handling: Combustion air preheated up to 80–90°C

 

Key Features:
• High thermal efficiency with optimized coil geometry for maximum heat transfer.
• Suitable for preheating air in all type boilers.
• No pressure drop design for no impact on fan performance.