Industrial Boiler Manufactory

Boiler Water Phosphate Injection

  • Phosphate corrosion in high-pressure boilers (Journal

    Dec 01, 1995 · Phosphate treatments have been used in boilers for more than 70 years. As operating pressures increased, the frequency of corrosion-related failures in phosphate-treated boilers also increased. Many failures were attributed to ``free`` caustic generated by the nonstoichiometric precipitation of various phosphate compounds on boiler surfaces.

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  • Phosphate Dosing For Boiler | Products & Suppliers

    In practice, the mixture of phosphates and NaOH was dosed into the feed water of boilers from a common tank, which technically introduced a complication with dispensing the mixture (by means of a dosing pump) into the drum of the boiler with … … of hydrate alkalinity (Alk) and total alkalinity was Alkff/Alktotal = 0.5, which provided for complete neutraliza- tion …

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  • The Feedtank and Feedwater Conditioning | Spirax Sarco

    Steam injection . As previously mentioned, there are significant advantages to maintaining the feedtank contents at a high temperature. Sodium phosphate is normally used for this, and causes the hardness to precipitate to the bottom of the boiler where it can be blown down. The main boiler water treatment programme is aimed at changing

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  • BOILER WATER TREATMENT FOR KILN DRY OPERATIONS …

    hydroxide. If insufficient boiler water alkalinity is being maintained, magnesium can combine with phosphate. Magnesium phosphate has a surface charge that can cause it to adhere to tube surfaces and then collect other solids. For this reason, alkalinity is an important part of a phosphate precipitation program. Phosphate Treatment Alone Not

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  • CHEMICAL INJECTION AND SAMPLING CONSIDERATIONS …

    When hardness enters a boiler containing phosphates, the boiler water typically becomes turbid, with the appearance of diluted milk. This is of interest in the event of carryover, if the drip legs fail to remove the boiler water from the steam line. Depending upon the piping configuration in the kiln, you may see "milky" boiler water blow out

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  • Phosphate Dosing For Boiler | Products & Suppliers

    Products/Services for Phosphate Dosing For Boiler. Dosing Pumps - (183 companies) Dosing pumps are low-volume fluid pumps with controllable discharge rates used to inject additives into the mixing or pumping system. Dosing pumps are low-volume pumps with controllable discharge rates that are used to inject additives or difficult

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  • EQUILIBRIUM PHOSPHATE DETERMINATION IN HIGH PRESSURE BOILERS

    Dec 04, 2018 · After the dosage interruption, a series of boiler water samples are taken for phosphate residual chemical testing. After you get all the phosphate residuals, a curve is obtained, and a certain

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  • Water for the Boiler | Spirax Sarco

    Water-tube boiler plant. Water-tube boiler plant is much less tolerant of high TDS levels, and even less so as the pressure increases. This is due to a number of reasons, including: Water-tube boilers have a limited water surface area in the steam drum, relative to the evaporation rate.

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  • Bringing Treatments To A Boil - Empowering Pumps and Equipment

    Program determines sodium-to-phosphate ratio in boiler

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  • Water Handbook -Boiler Deposits: Occurrence And Control | SUEZ

    Even small levels of phosphate can be maintained to ensure the precipitation of calcium phosphate in the bulk boiler water-away from heating surfaces. Therefore, the introduction of phosphate treatment eliminated the problem of calcium carbonate scale. When calcium phosphate is formed in boiler water of sufficient alkalinity (pH 11.0-12.0), a

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  • What Is a Boiler Feed Water Treatment System and How Does

    Sep 26, 2016 · A boiler feed water treatment system might be made up of the technologies necessary to remove problematic dissolved solids, suspended solids, and organic material, including any number of the following: Calcium: can cause scaling in several forms depending on the chemistry of the boiler feed water (e.g. calcium silicate, calcium phosphate, etc.)

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  • DRAFT BOILER/FEEDWATER GUIDELINES

    pitting can result with possible rupture of boiler condensate piping or boiler tubes. 3.3.4 Rusty water in the boiler gage glass is a sure sign of acid corrosion in the boiler feedwater/condesate system or in the boiler itself. 3.3.5 Make-up water is the major source of carbon dioxide. The first priority is to minimize the amount of make-up water.

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  • Water treatment for industrial boilers with demineralized

    Dec 01, 1997 · Despite using demineralized feedwater, water related tube failures still occur in some industrial boilers. The failures occur due to overheating or corrosion. The corrosion may be either caustic or acidic attack. These tube failures can be avoided by employing water …

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  • What is phosphate in boiler water? – AnswersToAll

    Phosphate compounds are common additives for boiler water treatment. Phosphate compounds react with any remaining hard water compounds to create a soft sludge that is eliminated through blowdown. Phosphates also scavenge (or remove) any remaining oxygen and create a pH buffer to minimize corrosion potential.

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  • How to Alleviate Waterside Issues in Boilers and HRSGs

    Feb 01, 2019 · Soda ash/washing soda (Na 2 CO 3) was the first chemical used to treat boiler water. Sodium phosphate (conventional phosphate treatment) …

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  • What is phosphate in boiler water? – AnswersToAll

    Phosphate compounds are common additives for boiler water treatment. Phosphate compounds react with any remaining hard water compounds to create a soft sludge that is eliminated through blowdown. Phosphates also scavenge (or remove) any remaining oxygen and create a pH buffer to minimize corrosion potential.

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  • [PDF] Using Of Congruent Phosphate As EquilibriumPhosphate

    Coordinated and congruent phosphates boiler water treatment has been used for more than forty years. They are very effective scale inhibitors for low and high pressure boilers. However, many steam generation units experienced such massive failures that many had to be replaced, this is mainly due to uncontrolled boiler water alkalinity. This paper describes different phosphate water treatment

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  • Cooling Water and Boiler Feed Water | Hach

    Cooling water is used in industrial processes to dissipate large amounts of heat. Boiler feed water, on the other hand, is used in the water/steam circuit for electricity generation in power stations. The water has to meet specific requirements for both applications, which is why it is analyzed on a regular basis.

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  • Boiler Feed Water Treatment; pH Control. Is yours correct?

    Feb 01, 2016 · Boiler water with a pH of 10.5 contributes 12.6mg/l towards the boiler TDS, whilst at a pH of 12.0 it increases to 400mg/l and at 12.5pH the value is 1264.9 mg/l, a whopping 100 fold increase.

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  • Bringing Treatments To A Boil - Empowering Pumps and Equipment

    Oct 27, 2021 · Ferric chloride or hydrated potassium aluminum sulfate (alum) are the coagulants used in boiler-water treatment. The downside of coagulants is the sludge that accumulates at the bottom of the boiler is corrosive and can still damage the boiler. Phosphates, such as sodium phosphate…

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