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Product Thermal Capacity: 1 - 20 t/h
Working Pressure: 0.7 - 2 Mpa
Product Thermal Capacity: 20 - 110 t/h
Working Pressure: 1.25 - 5.3 Mpa
Product Thermal Capacity: 2 – 20t/h
Working Pressure: 1 - 2.5 MPA
Product Thermal Capacity: 4 - 35 t/h
Working Pressure: 1.0 - 2.5 MPA
Phosphate buffers the boiler water, reducing the chance of large pH changes due to the development of high caustic concentrations. Excess caustic combines with disodium phosphate and forms trisodium phosphate. Sufficient disodium phosphate must be available to combine with all of the free caustic in order to form trisodium phosphate.
It wasn’t so long ago that trisodium phosphate (TSP) was a go-to choice for tough cleaning jobs, especially on exteriors. Diluted in water and applied often with a stiff scrub brush, it can
anion exchange demineralization. Please see the basic boiler system schematic illustrated on page 3. • Phosphate Mono-, di- or trisodium phosphate and sodium polyphosphate can be added to treat boiler feedwater. Phosphate buffers the water to minimize pH fluctuation. It also precipitates calcium or magnesium into a soft
Name: Disodium Dihydrogen Diphosphate, Sodium Acid Pyrophosphate, Sapp, B.P. Pyro, Donut Pyro, Perfection, Sapp #4, Taterfos, Victor Cream, Disodium pyrophosphate, disodium diphosphate, disodium dihydrogen phosphate. Disodium Pyrophosphate or Sodium Acid Pyrophosphate is a buffering and chelating agent used in canned seafood, as a scald agent in poultry and pork, as a sequesterant in …
What is boiler draught?Jul 28, 2019What is the condition to start phosphate dosing in a highMay 07, 2018What is phosphate hideout problem in boilers?Oct 14, 2017Why are we dosing ammonia, hydrazine and triammoniumJun 09, 2017See more results Figure 1: Phosphate treatment systems used in boilers . The most popular treatment for low pressure boilers (< 600 psi) is dosing of tri-sodium phosphate (TSP), it reacts with water at high temperature and gives sodium hydroxide to increase boilers water pH as shown in equation (1). 3 4 2 + → 2 4 + Na PO H O Na HPO NaOH (1)
Sodium carbonate treatment was used to precipitate calcium as calcium carbonate to prevent the formation of calcium sulfate. The driving force for the formation of calcium carbonate was the maintenance of a high concentration of carbonate ion in the boiler water.
The procedures for determining the chemical treatment Table 7-4.—Trisodium Phosphate Dosage For Natural Circulation Auxiliary Boilers (Trisodium Pbosphate, Dodecahydrate, Na 3 PO 4 12H 2 0) Boiler water Alkalinity epm (meg/L) 0.1 0.095 X = 0.2 0.090 X = 0.3 0.085 X = 0.4 0.080 X = 0.5 0.075 X = 0.6 0.070 X = 0.7 0.065 X = 0.8 0.060 X = 0.9 0
zone. Major quantities of sodium iron phosphate were found in the affected tubes, indicating that the sodium phosphate from the boiler water had participated in the corrosion mechanism. Figure 1 and Figure 2 show the corrosion. Recommendations Utilities operating drum-type boilers on phosphate base treatment should: 1. 2. 3.
There are several different chemical approaches used to treat boilers and their selection and performance depend upon many factors. Some of these include: 1. Feedwater characteristics. 2. The type and reliability of external treatment. 3. Boiler type. 4. Boiler pressure and heat flux. 5. Steam load and variations in load. 6.
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