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Sodium sulfite. 3 lb of sodium sulfite and 3 lb of caustic soda should be added per 1000 gal of water contained in the boiler (minimum 400 ppm P-alkalinity as CaCO3 and 200 ppm sulfite as SO3). Hydrazine. 5 lb of a 35% solution of hydrazine and 0.1 lb of ammonia or 2-3 lb of a 40% solution of neutralizing amine can be added per 1000 gal (minimum 200 ppm hydrazine and 10.0 pH).
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Sodium Sulfite(Na2SO3) is a soluble sodium salt of sulfurous acid. It helps to remove oxygen instantly from the boiler feed water by converting itself to sodium sulfate. Key Characterstics and Benefits: • Catalyzed Oxygen Scavenger for instant oxygen removal
Get pricesodium sulfite (Na2SO3) may be pumped into the boiler either separately, or along with the alkali solution referred to above, to react with and remove the dissolved oxygen. In most cases, sufficient sodium sulfite would be fed to maintain a reservoir of at least 100
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Sodium sulfite. 3 lb of sodium sulfite and 3 lb of caustic soda should be added per 1000 gal of water contained in the boiler (minimum 400 ppm P-alkalinity as CaCO3 and 200 ppm sulfite as SO3). Hydrazine. 5 lb of a 35% solution of hydrazine and 0.1 lb of ammonia or 2-3 lb of a 40% solution of neutralizing amine can be added per 1000 gal (minimum 200 ppm hydrazine and 10.0 pH).
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100 H. Speed of Reaction For good corrosion control in a boiler, rapid reaction is sought between oxygen and the chemical scavenger. A slow reaction rate could allow traces of oxygen to enter the boiler even in the presence of an excess of sodium sulfite. Factors
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Sodium sulfite anhydrous is used as deoxidizer of boiler water and oil field water injection, deoxidizer of municipal water or industrial water In water treatment field. In water treatment sodium sulfite anhydrous is used for reducing hexavalent chromium into low toxic trivalent chromium, can settle and separate silver and mercury from waste water.
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Sodium sulfite contributes dissolved solids (sodium sulfate) to the boiler water. It decomposes into corrosive products above 282 C (540 F), which corresponds to about 950 psig of saturated steam. Comparatively large residuals of sodium sulfite are required to
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27/4/2015 · Two forms of sodium phosphate find application in low and medium pressure boilers; disodium phosphate (NaHPO4 having a 49% P2O5 content) and sodium metaphosphate (NaPO3 having a 69% P2O5 content). Both react under boiler conditions to produce orthophosphate (o-PO4).
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In the high temperature/pressure and alkaline atmosphere of the boiler, sodium sulfite will decompose. As a result, the sulfite salts are limited to pressures below 1250 psig. Na 2SO 3 + H 2O SO 2 + 2NaOH (3) 4Na 2SO 3 3Na 2SO 4 + Na 2 Na Large amounts
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Generic Name: Removal of oxygen using commercial sodium sulfite and a catalyzed sodium sulfite makes great difference . After 25 seconds of contact, catalyzed sodium sulfite removed the oxygen completely. Uncatalyzed sodium sulfite removed less than 50% of the oxygen in this same time period. In a boiler feedwate.
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17/4/2020 · Sodium sulfite (sodium sulphite) is the inorganic compound with the chemical formula Na2SO3. "Pre-boiler and Boiler Corrosion Control | GE Water". ^ Merck Ask Price View More Boiler Oxygen Scavenger – Chemtex Speciality Limited …
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16/9/1999 · First, soft water (with hardness not more than 1 ppm) in which sulfite ions SO32− and sodium hydroxide NaOH were added was supplied to the boiler, followed by a certain period of operation. Then, the quantity of corrosion at a heat transfer part of the boiler was measured.
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