BOILER PROBLEMS - SlideShare

Mar 12, 2016 · Boiler and Boiler Feed Water Boiler Problems Sludge and Scale Formation Priming Foaming Carry Over Boiler Corrosion Caustic Embrittlement By adding hydrazine or sodium sulphite or sodium sulphide. Hydrazine is an ideal chemical for the removal of dissolved oxygen. It reacts with oxygen, forming nitrogen and water.

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Food Additive Status List | FDA

Hydrazine - BC, REG, ZERO - For steam contacting food -173.310 Hydriodic acid - SANI, REG, <25 ppm I2 in soln Adequate drainage - 178.1010 Hydrobiotite, exfoliated - FEED, REG, See Verxite -573.1000

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Hydrazine - US EPA

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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Boiler water - Wikipedia

Boiler water is liquid water within a boiler, or in associated piping, pumps and other equipment, that is intended for evaporation into steam.The term may also be applied to raw water intended for use in boilers, treated boiler feedwater, steam condensate being returned to a boiler, or boiler blowdown being removed from a boiler.

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Boiler water treatment - Lenntech

The treatment and conditioning of boiler feed water must satisfy three main objectives:. Continuous heat exchange; Corrosion protection; Production of high quality steam; External treatment is the reduction or removal of impurities from water outside the boiler. In general, external treatment is used when the amount of one or more of the feed water impurities is too high to be tolerated by the

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Hydrazine | N2H4 - PubChem

Hydrazine is a highly reactive base and reducing agent used in many industrial and medical applications. In biological applications, hydrazine and its derivatives exhibit antidepressant properties by inhibiting monoamine oxidase (MAO), an enzyme that catalyzes the deamination and inactivation of certain stimulatory neurotransmitters such as norepinephrine and dopamine.

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Water Handbook - Boiler System Failures | SUEZ

This spurred the use of improved open feedwater heaters to remove most of the oxygen prior to the entrance of water into the boiler. Today, most plants are equipped with efficiently operated deaerating heaters. The use of oxygen scavengers, such as catalyzed sodium sulfite, hydrazine, and organic scavengers, is also standard practice.

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Hydrazine | NIOSH | CDC

Hydrazines (H₂NNH₂) are clear, colorless liquids with an ammonia-like odor. Hydrazines are highly reactive and easily catch fire. Workers may be harmed from exposure to hydrazine. The level of harm depends upon the dose, duration, and work being done.

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Marine Engineering: Boiler Water Testing

Dec 15, 2010 · 7.5 14.0 for Boiler Water 6.5 10.0 for Condensate Water Purpose: 1. To give warning on acidity or alkalinity of boiler water sample. 2. Result help to establish the dosage of boiler compound to fight against corrosion. Procedures: 1.Take a 50 ml sample of the water to be tested in the plastic sample container provided. 2.Using the white

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Boiler feed water - Lenntech

The boiler receives the feed water, which consists of varying proportion of recovered condensed water (return water) and fresh water, which has been purified in varying degrees (make up water).The make-up water is usually natural water either in its raw state, or treated by some process before use.

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