Zozen Boiler

Why is hard water not suitable for boilers? - Quora

Hard water has minerals which will coat the inside of boiler tubes for water tube boilers and the outside of tubes for fire tube boilers. Either way, when this occurs, the heat of the fire cannot transfer easily through the tubes to the water beca

Why are all high pressure boilers water tubes? - Quora

In water tube Boiler water flows in tube and Flue gasses flow around the water tubes. As compared to fire tube Boilers, water tube Boilers are used for high pressure application because 1. The heat transfer area is more in water tube boilers as Wa

Understanding your water pressure system | Ideas & …

2019-8-27 · High pressure water systems offer the flexibility of being suitable for use with most taps, so you shouldn’t need to calculate your water pressure when buying new taps. Pressures can vary depending on your boiler, but the typical pressure expectation is between 1 and 2 bar.

Boiler - Wikipedia

2020-5-8 · Materials. The pressure vessel of a boiler is usually made of steel (or alloy steel), or historically of wrought iron. Stainless steel, especially of the austenitic types, is not used in wetted parts of boilers due to corrosion and stress corrosion cracking. However, ferritic stainless steel is often used in superheater sections that will not be exposed to boiling water, and electrically

Boiler Pressure - an overview | ScienceDirect Topics

Adding suitable chemicals (e.g., phosphate) are more or less sufficient to remove contaminants from the condensate stream. The requirement for condensate polishing unit becomes a necessity for medium-pressure boilers (40–170 kg/cm 2) and, of course, for boilers with high-pressure (above 170 kg/cm 2) system. In cases of once-through boilers, a

Boiler Water Treatment - ScienceDirect

Water treatment of steam boilers - LinkedIn SlideShare

Low pressure boilers operate at 15 psig or below. Boiler capacity Boiler capacity is expressed in the following units. 1. Horse Power. 2. Pounds of Steam per Hour 3. BTU per Hour 1HP means energy to convert 34.5 pounds of water to steam from (and at) 212o F at sea level. High pressure boiler treatment The treatments for high pressure boilers

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

What is Demineralised Water or DM Water ? - …

2020-5-9 · Demineralised water is a type of water which is free from all types of minerals like chloride , silica , potassium , calcium etc. The DM water is produced by one of the following processes : Distillation; Deionization; Membrane filtration (reverse osmosis or nanofiltration) electrodyalisis; Ion …

Boiler Chemistry Control and Treatment of Feed Water

Silica needs to be controlled at DM plant also. The percentage of impurity allowed in boiler water/steam is function of boiler operating pressure, so, more critical for high pressure boilers. Two basic ways to regulate corrosion in water, are All Volatile Treatment (AVT) and Oxygenated Treatment (OT).