Boiler Water Treatment Guidelines; Columbia Boiler Co

Below a pH of 50 the water is acidic enough to dissolve the plates Under these conditions the gradually becomes thinner and thinner until its destruction At a pH between 5 and 94 pitting of shell plates will occur at a rate depending on the amount of dissolved oxygen in the boiler

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Table 3-3 Levels of Sulfite to be Carried in Boiler Water

These reactions have been shown to occur at boiler pressures as low although they do not usually create a serious problem until pressures exceed 6205 kilopascals (900 pounds per square inch

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Feed Water Treatment to Avoid Corrosion

Sodium Sulfite is an effective scavenger for use in systems operating For pressures above 1000 psi breakdowns may form corrosive Hydrogen Sulfide and/or Sulfur Dioxide Sodium Sulfite may also increase the amount of dissolved solids and the conductivity of the boiler water Hydrazine

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Sulfite & Catalyzed Sulfite in Steam Boilers | Chardon Labs

There is a catalyzed form of BJ-10 that can be used just like the normal BJ-10 The dosage rates for the catalyzed version and the normal BJ-10 are interchangeable and can be determined by the normal boiler calculations and maintaining a residual of in the boiler and 5-10 ppm sulfite in the deaerator feedwater or surge tank

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Water Handbook - Preboiler & Industrial Boiler Corrosion

Sulfite residual limits are a function of boiler operating pressure For most low- and medium-pressure systems sulfite residuals should be in Hydrazine control is usually based on a feedwater excess ofm For different organic scavengers residuals and tests vary MONITORING AND TESTING

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