File Size: 99KB A complete water treatment programme for a steam boiler will usually include a chemical oxygen scavenger, alkalinity builder and polymer sludge conditioner and, depending on the application, may also incorporate a phosphate treatment and a condensate line treatment. If …

Jul 24, 2017· For boilers without superheaters or for boilers with drainable superheaters, sodium sulfite and caustic soda are generally used for this purpose. For high pressure boilers, or boilers with non-drainable superheaters, volatile chemicals must be used such as hydrazine and ammonia.

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Feedwater for a high-pressure boiler should be a) treated with phosphate. b) treated with phenolphthalein. c) treated city water. d) softened water.

High-pressure boilers are used in industries and designed to generate the steam found in power plants, dry cleaners and laundromats. These boilers were also used in locomotive steam engines to give them the necessary power to run.

5/5(2) For high steam usage boilers or very low returned condensate boiler systems, generally a 3 or 4 drums chemical program is used. For lower steam usage boiler systems, a 1 to 2 drum boiler chemical program may be used to reduce the number of chemical drums onsite. This program is referred to as an All in One chemical.

pH is controlled by either removing water impurities or adding other chemicals to neutralize the condition. For example, Caustic Soda, an alkaline, is added to neutralize CO3, carbonic acid. pH Related Corrosion. When the boiler water pH drops below about 8.5, a corrosion called acid attack can occur. The effect exhibits rough pitted surfaces

[PDF]boiler operator study guide 10421 west markham little rock, ar 72205 (501) 682-4513 . high pressure examination: high pressure boilers by fredrick m. steingress $80.00 + s/h american technical publishers, inc. the sample questions are only examples of possible questions on the examination.

Maintenance of proper pH throughout the boiler feedwater, boiler, and condensate systems is essential for corrosion control. Most low-pressure boiler system operators monitor boiler water alkalinity because it correlates very closely with pH, while most feedwater, condensate, and high-pressure boiler water requires direct monitoring of pH.

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 boiler system in question.

4.6/5(193) Oct 27, 2016· High efficiency – High-pressure boilers have better firing methods, monitoring, furnace conditions, control flue gases and water velocity. Intensive heating – the furnace temperature in high-pressure boilers is high enough and therefore, 70% of heat is transferred to water by radiation.