HP Dosing System

Purpose: HP dosing system in a power plant is to maintain the proper pH level of the boiler feedwater and prevent corrosion and scaling.

Overview: An HP (high-pressure) dosing system in a power plant is to inject a precise amount of chemicals, typically ammonia or an ammonia derivative, into the feedwater of a boiler at high pressure to maintain the proper pH level and prevent corrosion and scaling.

The HP dosing system typically includes a storage tank for the chemical solution, a dosing pump or pumps, and instrumentation to measure the pH level of the feedwater and control the dosing rate. The system is designed to deliver the correct amount of chemical to the boiler, which can vary depending on factors such as boiler load, feedwater temperature, and the quality of the feedwater.

 

Advanced FEA Analysis & Engineering Calculations for Skid-Mounted Chemical Injection Packages

At Verito Engineering Private Limited, we specialize in providing comprehensive engineering analysis and calculations for Skid-Mounted Chemical Injection Packages, ensuring superior performance, reliability, and compliance with global industry standards.

Our expertise covers Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), Structural, Mechanical, Hydraulic, and Thermal Calculations for all critical skid components, including:

Key Engineering Capabilities

Pressure Vessel Calculations API 675-Compliant Dosing Pump Selection & Sizing Agitator & Mixing Calculations (For Chemical Preparation Skids)
  • Pressure Vessel Design & Shell Thickness Calculation as per ASME Sec. VIII Div. 1 & 2.
  • Vessel Internal Component Load Analysis (Baffles, nozzles, internals, etc.).
  • Stress Analysis for Pressure Retaining Components to ensure longevity.
  • Nozzle Reinforcement & Load Analysis to prevent failures under operational loads.
  • Flow Rate & Pressure Drop Calculation for precise chemical metering.
  • Pump Stroke Length, Plunger/Diaphragm Sizing & NPSH Calculation to prevent cavitation.
  • Pulsation Dampener Sizing for flow stability & reduced pressure fluctuations.
  • CFD Analysis for Flow Optimization in complex piping networks.
  • CFD Analysis for Flow & Performance Optimization.
  • Impeller Selection & Torque Calculation for effective chemical mixing.
  • Structural & Fatigue Analysis of Agitator Shaft & Blades for extended service life.
  • Vortex Prevention & Baffle Sizing for improved mixing efficiency.
Automation & Instrumentation for Optimized Operations Piping Stress & Pressure Calculations Structural & Skid Frame Analysis
  • PLC, HMI, SCADA-Based Automation for precise control & reduced human intervention.
  • Smart Flow Meters, Pressure Transmitters & Level Sensors for real-time monitoring.
  • Automatic Dosing Adjustment & Data Logging to optimize chemical consumption & efficiency.
  • Pipe Wall Thickness Calculation as per ASME B31.3.
  • Flange Sizing/rating, Leakage & Weld Joint Strength Assessment for high-pressure applications.
  • Surge & Transient Flow Analysis to prevent pressure spikes.
  • FEA-based validation for skid stability, seismic loads, and lifting conditions.
  • Baseplate & Pump Mounting Deflection Study to prevent misalignment.
Strainer Calculations Safety & PSV Sizing Calculations Injection Quill
  • Strainer Mesh Sizing & Pressure Drop Calculations for filtration efficiency.
  • Pressure Safety Valve (PSV) Sizing per API 520/521.
  • Overpressure & Surge Analysis for emergency scenarios.
  • Injection Velocity & Jet Penetration Analysis for precise chemical dispersion.
  • Wake Frequency Calculation to prevent vibration-induced failures.
Material Selection & Corrosion Analysis Operational Efficiency & Cost Reduction
  • Material Compatibility Assessment (SS316, Duplex, Super Duplex, Alloy 20, Hastelloy).
  • NACE MR0175/ISO 15156 Compliance for sour service applications.
  • Optimized Equipment Layout for Compact Skid Design - reduces footprint & installation cost.
  • Automated Operation to Reduce Manpower Requirements.
  • Remote Monitoring & Troubleshooting for reduced downtime & maintenance costs.

 

Maintaining the correct pH level in the boiler feedwater is critical to the safe and efficient operation of the power plant. If the pH level is too low, the water can become acidic and corrode the boiler tubes, leading to leaks and other damage. If the pH level is too high, scaling can occur, reducing the efficiency of the boiler and potentially causing blockages.

Therefore, the HP dosing system plays an important role in ensuring the long-term reliability and efficiency of a power plant.

Supplied to:

1 World’s One of the Top Multi-national Company in the Beverage Industries.

2 One of India's biggest aluminum manufacturing company and the world's largest flat-rolled products player and recycler of aluminum

3 India’s Leading power plant company with a combined capacity of 1,391 MW

Project:
1. Coca-Cola Company.
2 Hindalco
3 JSW
4 Wacot Rice, Nigeria

Technical Aspects: Available in ATEX, CE, ASME, API, IS…..etc.

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