water carry-over is the contamination of the steam with -water solids Bubbles or froth actually build up on the surface of the water and pass out with the steam This is called foaming and it is caused by high concentration of any solids in the water It is generally believed however that specific substances such as alkalis oils fats greases certain ofRead More
Anti-foaming or anti-priming : mixture of surface-active that modify the surface tension of a liquid remove foam and prevent the carry over of fine water particles in the steam The softening chemicals used include soda ash caustic and various of sodium phosphates These chemicals react with calcium and magnesium compounds in the feed waterRead More
Contributors; Although we have confined our discussion so far to simple ligands such as Cl NH 3 or H 2 O much larger and more complicated molecules can also donate electron pairs to metal ions An important and interesting example of this is the chelating ligands which are able to form two or more coordinate covalent bonds with a metal ionRead More
· refractory materials are classified in three main groups: Acid materials: They consist of clay quartz silica gamister and sandstone Neutral material: Consist of graphite chromite alumina and plumbago Base or alkaline material: Consist of lime zirconia and magnesiaRead More
involves use of hand and power tools plumb bobs levels wedges dogs or turnbuckles Assist in testing assembled vessels Direct cleaning of and furnaces Inspect and repair fittings such as safety valves regulators automatic-control mechanisms water columns and auxiliary machines Part 1 Duties / Tasks Part 2Read More
What are the types of Boiler Chemicals are there? There are two main groups of Chemicals for Boilers to choose from One chemical group for boilers is for and the second is for Steam Boiler Chemicals - These include Oxygen Scavengers Amines Phosphates Polymers and Alkalinity Builders Oxygen Scavengers - Most common type is 38% pH < 4 Other solutionsRead More
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