Sep 01, 2018 · However, given that typical industrial packaged-type boilers can generate from 10,000 lb/h to more than 250,000 lb/h of steam, this type of flow would expose the boiler to a great deal of oxygenated water, and could result in corrosion and potential tube failures in a fairly short period of time.
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ASTM D1385 - 07(2018)e1 Standard Test Method for Hydrazine
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Hydrazine's odor is ammonia-like or 'fishy' and is detectable by smell at 1–10 ppm. Because hydrazine is a marked corrosive, it can cause chemical burns of the skin. Hydrazine vapors may cause irritation of the mucus membranes of the eyes, nose, throat, and respiratory tract. Inhalation of vapors can produce cough, dyspnea, and pulmonary
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For every 1 mg/L of oxygen feed about 5 mg/L of hydrazine. The excess will break down to ammonia in the boiler (equation 3-23) and may cause problems in copper condensate systems unless they are air free. Hydrazine is typically supplied as a 35% solution in water.
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chloride is found too much in boiler Archives - Marine
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Hydrazine is used in agricultural chemicals (pesticides), chemical blowing agents, pharmaceutical intermediates, photography chemicals, boiler water treatment for corrosion protection, textile dyes, and as fuel for rockets and spacecraft. (4,6,8,10) Sources and Potential Exposure Individuals may be occupationally exposed to hydrazine in the
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Hydrazine, aqueous solution, with not more than 37% hydrazine appears as a colorless aqueous solution containing a maximum of 37% hydrazine by mass. Has an ammonia -like odor. Corrosive.
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Hydrazine is often determined in concentrations below 0.1 mg/L. However, in layup solutions for the protection of idle boilers, hydrazine may be present in concentrations as high as 200 mg/L. 5.2 Additionally, hydrazine provides protection where reducing conditions are required, particularly in mixed metallurgy systems for the protection of the copper alloys.
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