effects of high phosphate in boiler water

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Product thermal capacity: 0.7 - 14 MW

Working pressure: 0.7 - 1.25 Mpa

Available fuel: Nature gas, coke oven gas, biogas, methanol, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc.

Available industries: Heat supplying, hospital, hotel.


WNS series horizontal internal combustion boiler is classic 3-pass wetback oil/gas fired boiler. After fuel is atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, called 1st pass; the high temperature flue gasses are collected in reversal chamber and then enter 2nd pass, which is grooved tube bundle area through heat convection, air temperature gradually falls and flows to front smoke box and enter 3rd pass, which is done in the smooth tube bundle area, and then through back smoke box lead to chimney and exhausted to the atmosphere.

Technical Advantages

Digitized Manufacture

The key processes including material cutting, rolling, drilling are made by advanced CNC machining process to reduce the assembly stress and extend boiler working lifetime.
The front and back smoke chamber plates are cut by CNC plasma cutting machine with tidy and beautiful look.

Easy Operation and Maintenance

Fully intelligent operation, with automatic adjustment and protection of burning, water level, temperature and steam pressure. The smoke box door uses the hinge structure for easy inspection, inventory and cleaning.

Long Service Life

The way to weld Smoke tube and tube sheet is to first expand to eliminate the gap between them, then adopt automatic argon arc welding to relief the stress and expand boiler service life.
Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint are test by radiographic inspection.
Fin tube uses ND steel or stainless-steel material to avoid corrosion in the low temperature.
Inspection stops are set up to guarantee the sequence of expanding and welding to avoid cracking of the tube sheet holes.

Less Fuel Consumption

High quality aluminum silicate fiber is used with fire clay insulation, to control the boiler body temperature below 45℃ and reduce heat lost.
Sufficient steam storage room and heating area to generate high quality steam and high thermal power.
Condenser is added to recycle the waste heat of the exhausted smoke to increase feeding water’s temperature and reduce flue gas emission temperature and increase the thermal efficiency over 98% and save operating cost.

Simultaneous determination of silicate and phosphat

Boiler feedwater at power plants is kept slightly alkaline (pH ca. 9.0) as an anticorrosion measure. Phosphate is widely used as an agent for adjusting the pH of the water in medium, high and ultrahigh pressure boilers. It also serves as a softening agent that converts calcium and magnesium water scale and other insoluble salts that form in

Application Data: pH Control of Boiler Wat

2018-12-26 · primarily on the conductivity of the boiler water. Conductivity can range from 7000 uS/cm in a low pressure industrial boiler to under 10 uS/cm in a high pressure boiler in a steam power plant. A pH sensor that works fine in a low pressure boiler will almost certainly fail in a high pressure boiler. High conductivity boiler water

Water Research Center - Phosphat

2019-10-27 · The algae bloom should start where running water enters the lake or bay, so test the water before the area where the bloom begins for high phosphate and nitrate levels. Monitors should be aware that there are different kinds of phosphates in the water, but a total phosphate-phosphorous reading is all that is needed to calculate the water quality.

Reducing Corrosion and potential Boiler Failure wit

2010-1-10 · 2) Reducing the impact of boiler feed water metal oxides concentration in boiler water. It is improving the efficiency, reducing the corrosion and increasing reliability. First we will discuss the optimal chemical water treatment approach in order to reduce corrosion on condensate and preboiler sections and second technologies to increase iron

EP0640747A1 - Boiler system pH/phosphate progra

A pH/phosphate program in a boiler water system is controlled by: (1) determining the feed rate of the phosphate to the boiler by adding to a phosphate-feed stream containing the phosphate feeding to the boiler a phosphate-feed tracer in known proportion to the phosphate, determining the concentration of the phosphate-feed tracer in the phosphate-feed stream and correlating the phosphate-feed

Boiler Water Treatment Chemicals, Feed, and Contro

2015-11-3 · high polymer level of 129 ppm. Polymer overfeed is expensive and high polymer levels can cause boiler water carryover with their surface-active properties that occur at high concentrations. Other Chemical Feed and Control Considerations How and where the various boiler chemicals are fed can affect their performance and control. a.

Boiler feed water - sk4education.c

2012-9-24 · The water fed into the boiler is known as "Boiler feed water". 2. Requirements for boiler water This method results in inert gas and pure water, and has no side effects. So it is preferred. b) Mechanical deaeration method: Phosphate conditioning: Used for high pressure boiler. No risk of CO2 liberation. 3CaSO4 + 2 Na3PO4 Ca3

Technical Guidance Document: Steam Purity for Turbin

2017-1-11 · particularly important when phosphate and NaOH alkalizing chemicals are added to the boiler/HRSG evaporator water, because elevated carryover can be a major source of corrosive impurities in the steam. Carryover is a function of drum pressure and therefore is more important at high

Troubleshooting: Condensate Contamination - Veolia Wat

2015-11-3 · Troubleshooting: Condensate Contamination By James McDonald, PE, CWT Originally Published: Ultrapure Water, July/August 2003, Volume 20, Number 6 In a well maintained, properly operating boiler system, condensate is a relatively high purity water


2016-11-3 · Effects of organic water treatment chemicals and their decomposition products [4, 22, 23] CF of boiler tubes Effect of high pH, NaOH [5] Hydrogen damage Effects of NaOH, acid phosphate [5, 26] Boiler tube corrosion Effects of "acid phosphates", maracite [5, 26, 27] Water droplet erosion Predictive equations, effects of chemistry [7, 28]

Will dosing a boiler with sodium phosphate affect th

Your original mixture with [math]Na_2HPO_4/Na_3PO_4[/math] will have a much higher pH than simply using [math]Na_2PO_4[/math] alone. The original solution will be