Vung Ang 1 Thermal Power Plant – Combustion Tuning Test

Combustion Tuning Test:

Chugai Technos, having gained the trust of the contractor Babcock & Wilcox Vietnam, successfully conducted the combustion tuning test for the boiler and auxiliary systems following the overhaul of the Unit 2, with bellow items:
- Air balance test.
- Adjustment of primary air (PA), secondary air (SA) and dirty air (DA).
- Coal fineness check.
- Combustion tuning check.
Scope of Works:
- Measurement of primary air (PA), secondary air (SA) and dirty 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, moisture content, gas composition (O₂, CO₂, and N₂), dust concentration; NOx-SO₂-CO-CO₂-O₂concentration;
- Fine coal: particle size, unburned carbon (UBC).
Report contents:
- Basic exhaust gas parameters (including temperature, pressure, velocity, flow rate, moisture content, gas composition).
- NOx-SO₂-CO-CO₂-O₂ concentration;
- Dust concentration;
- Distribution of temperature, velocity, dust concentration; NOx-CO-CO₂-O₂concentration;
- Analysis result of coal and fly ash.
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.