Power Plant Silica Online Analyzer Overview

The Importance of Silicon Dioxide (SiO) in Power Plants

Silica is a common impurity in the water and steam system of power plants, especially in high pressure boilers and steam turbines. It will adhere to the inner wall of heat exchangers and steam passages in the form of deposits, affecting equipment efficiency and even causing equipment damage. Therefore, real-time monitoring of silica concentrations is critical for plant water treatment and steam quality control.

Second, the working principle of silica online analyzer

1. Rationale:

   • Based onthe molybdenum blue method, silicon dioxide reacts with molybdate under specific conditions to form a molybdenum silicon yellow complex, which is subsequently reduced to a blue compound, the color of which is proportional to the concentration of silicon dioxide.
   • Calculate the concentration of silica by measuring the absorbance of the solution by photometric colorimetry.

2. Key components:

   • Reagent addition system: precise addition of reaction reagents such as molybdate and reducing agents.
   • Optical detection module: Usually using LED light source and photoelectric sensor to detect absorbance.
   • Temperature control system: maintain the reaction at a constant temperature to improve accuracy.
   • Data processing module: real-time processing data and output concentration results.

III. Functional characteristics

1. High sensitivity:

   • The detection range is usually0-200 g/L or higher, suitable for ultra-low concentration silica monitoring.

2. High degree of automation:

   • Automatic reagent addition, reaction and cleaning support long-term unattended operation.

3. Multi-channel monitoring:

   • Multiple sampling points can be monitored simultaneously, suitable for on-line analysis of different power plant systems (such as makeup water, condensate and boiler water).

4. Data communication:

   • Supports multiple communication interfaces (e.g. 4-20mA, RS485, Modbus) for easy integration into DCS or SCADA systems.

IV. Use of operating methods

1. Installation and start-up:

   • Ensure that the instrument is installed horizontally, connecting sample lines and reagent containers.
   • Check whether each module works normally after starting up. Calibrate the instrument for the first time.

2. Calibration and calibration:

   • Calibrate regularly with standard silicon solutions (known concentrations) to ensure accurate measurements.
   • Follow calibration procedures provided by manufacturer.

3. Daily measurements:

   • Set measurement intervals and sampling points.
   • The instrument automatically completes sample collection, reagent reaction and result output.

4. Maintenance and cleaning:

   • Regularly check and replace reagents to prevent expiration of reagents.
   • Clean optical cell and pipeline to avoid sediment affecting accuracy.
   • Adjust cleaning frequency according to water quality conditions.

V. Technical indicators (GSGG-2089Pro model as an example)

VI. Application scenarios

1. Power plant water vapor system:

   • Monitor silica content in boiler water, condensate and makeup water to avoid scaling.

2. Nuclear power plants:

   • Accurate control of water chemistry parameters to ensure high purity water quality in reactor cooling system.

3. Industrial steam systems:

   • Prevent silicon deposition in steam turbines and improve equipment life and efficiency.

VII. Recommended models

For specific brand or model, please refer toGSGG-5089Pro silicon dioxide online analyzer ofShanghai Bio Instrument Co., Ltd., which has high precision and multifunctional characteristics and is very suitable for power plant and industrial users.

If you need more information or technical support, please let us know your specific needs!