Beijing Huakeyi Power Plant Instrument Research Institute
Main products:Phs-3C PH Benchtop Meter,HK-208 Phosphofe Meter,HK 7000 Wall Type Gas Controller,HK-11BW Silica On Line Analyzer,HK-128W Online Hydrazine Analyzer
Products
Contact Us
  • Contact Person : Mr. shi zhichun
  • Company Name : Beijing Huakeyi Power Plant Instrument Research Institute
  • Tel : 86-10-80703094
  • Fax : 86-10-80703093
  • Address : Beijing,Beijing,Qiliqu nancun industrial park,Shahe Town,Changping District,Beijing 102206, China
  • Country/Region : China
  • Zip : 102206

silica monitor

silica monitor
Product Detailed
It is profesonal monitor the silica concentration.We have done OEM this products with TOP 500 world for 8 years.

Power Generation — Boiler Series

Part 1 of 4: Overview

Protecting the boiler, the most important component of a power plant, presents unique challenges. The quality of the water moving through the boiler is key to both performance and overall boiler life. This series of articles discusses challenges specifically related to water quality in boiler applications:

Carryover of impuritiesManagement of blowdownCooling water in-leakage to condensateWater Conditions: Raw Water and Process Water

FeedwaterChallenge: Carryover of ImpuritiesImpurities in the feedwater system transport to the boiler where they deposit on surfaces. This results in heat transfer loss, reduced efficiency, and an increased risk of boiler tube failure. From the boiler, impurities carry over into steam causing scaling and turbine blade corrosion. Deposits on the turbines reduce efficiency, directly reducing the plant’s power output and resulting revenue.

Potential sources of impurities can include:

Return condensateMakeup waterChemical cleaningWater treatment chemicalsCondensate polishersCondenser leaksGlycol (antifreeze) from plant equipmentPaints and solventsAir in-leakageCorrosion productsCombustion products

Measurements to fight corrosion and minimize carryover include close control of pH and oxygen levels. Silica must be held to exceptionally low levels in high-pressure boilers to prevent carryover into steam and deposition on turbine blades. In addition, ammonia or neutralizing amines may be applied to neutralize CO2, an acidic byproduct that promotes corrosion. Filming amines are often used to form a protective coating on steam system metal surfaces.

Online monitoring of key parameters such as pH, conductivity, Dissolved Oxygen (DO), silica, sodium, and, if applicable, phosphate and hydrazine help maintain optimum boiler chemistry and minimize solids carryover. Refer to the table below for details.

Parameter

Benefit

Huakeyi Offering

pH

Maintain pH to reduce corrosion

Hk328 ph analyzer for high purity water

Conductivity (Specific and Cation)

Detect presence of dissolved solids.

Hk338 conductivity high purity conductivity sensors with controller

DO

Control DO levels to reduce corrosion due to oxidation of metal surfaces.

Hk318 D.O sensors with controller

Phosphate

Confirm target levels; may also be used to detect carryover in the system.

hk108w Phosphate Analyzer(low or high range)

Silica

Identify earliest signs of anion breakthrough in demineralizers and polishers. Monitor in steam to prevent carryover to turbines.

Hk118w

high-throughput testing

Sodium

Identify earliest signs of cation breakthrough in demineralizers and polishers. Sodium in steam causes pitting corrosion on turbine blades.

Hk128w sodium analyzer

Turbidity

Monitor corrosion.

Portable Turbidity

silica monitor



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