MEASURING AND MONITORING QUALITY OF BOILER WATER
For operating the boiler stably and permanently, we need to monitor some important parameters of boiler feed-water quality in order to avoid scaling in the boiler and pipe surfaces as well as preventing metal oxidation which directly damages the boiler and the steam system.
From above situation, Endress+Hauser has had the measuring and monitoring system for boiler feed-water quality from our specialized instruments. Enterprises can monitor online analytical results via webserver by PC/ ipad/ smart-phone.
This solution saves time compared to manual testing method. Instruments have high accuracy helping less loss during operation. When there is any measured value error, the system will warn to the operator immediately, so we can fix problems quickly. Thanks to analysing exactly and monitoring continuously of instruments, the plant can make the most appropriate plans to operate and maintain in time, thereby reducing the amount of chemical for hard water treatment and restricting unnecessary blow down.
The boiler operating performance monitoring system via: temperature + flow of feed-water and recovery water; energy consumption; mass flow of saturated steam
Monitoring the boiler feed-water quality through monitoring Silicates
Monitoring parameters:
1. PH
Endress+Hauser pH instrument specialized in Boiler Feed-water
– Benefits of Orbisint CPS11D:
+ Memosens technology: Safety operation with inductive data transmission
+ PTFE ring junction, anti-dirty, low maintenance costs
+ Pressures up to 17 bar and temperature up to 135 °C
+ For media with low conductivity
– Benefits of Ceraliquid CPS41D:
+ Memosens technology: Safety operation with inductive data transmission
+ Ceramic ring junction, durability, fast respond time
+ Pressure up to 10 bar, temperature up to 135 °C
+ For media with very low conductivity (≥ 0.1 μS /cm) thanks to KCl refill function
+ Suitable for CIP/SIP
2. Conductivity
Endress+Hauser conductivity instruments specialized in Boiler Feed-water.
– Benefits of Condumax CLS51D:
+ Memosens technology: Safety operation with inductive data transmission
+ Cleaning easily thanks to electropolished surfaces
+ High reliable and accuracy
+ Pressure up to 12 bar, temperature up to 100 °C
– Benefits of Condumax W CLS12/13:
+ Two-electrode sensor is designed for industrial and power plant applications with high pressure and temperature
+ High reliable and accuracy
+ Pressure up to 40 bar, temperature up to 160/250 °C
3. Dissolved oxygen concentration
Endress+Hauser dissolved oxygen concentration instrument specialized in Boiler Feed-water.
– Benefits of Oxymax COS22D:
+ Memosens technology: Safety operation with inductive data transmission
+ Cleaning easily thanks to stainless steel surface, low maintenance costs
+ Respone time < 60s
+ Pressure up to 12 bar, temperature up to 135 °C
+ Suitable for CIP/SIP
4. Other monitoring parameters:
Depending on the needs of each plant, other monitoring parameters should be selected as follows: Turbidity, Ammonium, Sodium, Silicate, Phosphates.