Evaporator (marine) - Wikipedia

The first distilling plants that boiled a separate water supply from that of the main boiler, appeared around 1867. These were not directly heated by a flame, but had a primary steam circuit using main boiler steam through coils within a steam drum or evaporator. The distillate from this vessel then passed to an adjacent vessel, the distilling condenser.

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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 Fundamentals and Best Practices

As the boiler water cycles of concentration increase then the feedwater flow and the steam make approach the same number Basic Boiler Calculations. Calculate the feedwater composition (impurities) from make up and condensate analysis below Make-Up Condensate Feedwater Total Hardness 2

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Boiler blowdown - Wikipedia

Boiler blowdown is water intentionally wasted from a boiler to avoid concentration of impurities during continuing evaporation of steam. The water is blown out of the boiler with some force by steam pressure within the boiler. Bottom blowdown used with early boilers caused abrupt downward adjustment of boiler water level and was customarily expelled downward to avoid the safety hazard of

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Your guide to safer boiler operation

The concentration of solids in the boiler should be measured and the boiler blown-down at such intervals as necessary to maintain established limits. Blow-down valves are placed at the lowest point of the boiler for the purpose of blowing sediment or scale from the boiler. They should be maintained in good working order and are to be opened

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Marine Engineering: Boiler Water Testing

Dec 15, 2010 · Objectives of the Boiler Water Testing 1)To monitor the condition of the boiler water. 2)To control the chemical dosing of the boiler. 3)To maintain the boiler in healthy state, around any possible seawater contamination. The first stage in the boiler water testing is to collect feed water sample from the boiler concerned.

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What is a Stress Concentration Factor (Kt)? - Definition

Oct 30, 2013 · A stress concentration factor (Kt) is a dimensionless factor that is used to quantify how concentrated the stress is in a mechanical part. It is defined as the ratio of the highest stress in the part compared to a reference stress.

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Water Handbook - Preboiler & Industrial Boiler Corrosion

The concentration of excess sulfite maintained in the feedwater or boiler water also affects the sulfite requirement. Sodium sulfite must be fed continuously for maximum oxygen removal. Usually, the most suitable point of application is the drop leg between the deaerator and the storage compartment.

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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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Boiler Safety

Both of these conditions can be caused by a high water level in the boiler. Priming and carryover can also be caused by a high concentration of chemicals in the boiler water, impurities in the boiler water that cause a high surface tension (such as oil), and/or opening a main steam stop valve too quickly.

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