Vung Ang 1 Thermal Power Plant – Combustion Tuning Test

Combustion Tuning Test

Receiving the trust of the contractor Babcock & Wilcox Vietnam (boiler manufacturer), Chugai Technos has conducted the combustion tuning test for the boiler and auxiliary systems following the overhaul of the Unit 2 turbine.

The scope of work includes:

  • Air balance check.
  • Adjustment of primary air (PA), secondary air (SA), and coal air (DA).
  • Coal fineness check.
  • Combustion tuning check.

Specific tasks performed:

  • Measurement of primary air (PA), secondary air (SA), and coal air (DA) flow rates.
  • Measurement of air flow at coal injection pipes.
  • Continuous monitoring of temperature, NOx-CO-CO2-O2 concentrations at the outlet of the economizer.
  • Monitoring and analysis of exhaust gas quality at the outlet of the economizer.
  • Sampling and analysis of coal injected into the boiler.
  • Sampling and analysis of fly ash quality.

Use of a simple and easily assembled equipment system to meet the specific requirements of the sampling location (horizontal pipes, off-floor sampling holes, limited space).

Parameters for monitoring and analysis:

  • Exhaust gas: temperature, pressure, velocity, flow rate, humidity, gas composition (O2, CO2, and N2), dust concentration; NOx-SO2-CO-CO2-O2
  • Fine coal: particle size, unburned components (UBC).

Report content:

  • Basic exhaust gas parameters (including temperature, pressure, velocity, flow rate, humidity, gas composition).
  • NOx-SO2-CO-CO2-O2
  • Dust concentration.
  • Distribution of temperature, velocity, dust concentration; NOx-CO-CO2-O2

Chugai Technos engineering team carried out the work under challenging nighttime operational conditions at the Vung Ang 1 Thermal Power Plant, in close coordination with the operations unit. Accurate and timely data provision was ensured. Leveraging the expertise of experienced engineers and industry-leading specialists from Japan, Chugai Technos worked collaboratively with the customer to develop the optimal plan, meeting real-world conditions and supporting the boiler manufacturer in operating the system under the best possible conditions.

Some pictures during the implementation of the project:

Measurement of primary air (PA), secondary air (SA) flow rates

Continuous NOx-O2 monitoring

NOx-O2 sampling tubes

Discussion of measurement results

Coal sampling at injection pipes