Question

difference between scale and sludge​

Answer 1

Answer:

⭐ If the precipitation takes place in the form of loose and slimy precipitate, it is called sludge. On the other hand, if the precipitated matter forms a hard, adhering crust/coating on the inner walls of the boiler, it is called scale.

⭐Water in boiler is continuously heated causes the increase in the concentration of dissolved and suspended solids. The precipitation in the form of soft loose and slimy deposits (sludge) The precipitation in the form of hard deposits, which are sticky on the walls.

⭐ scale is a deposit that forms directly on heat transfer surfaces when constituent solubility limits are exceeded and the resulting compounds precipitate onto the tube surfaces. Such deposits may contain calcium, magnesium, phosphate, iron, and silica.

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Answer 2

Answer:

Sludge

1. If the precipitation takes place in the form of loose and slimy precipitate, it is called sludge.

Scale

1. On the other hand, if the precipitated matter forms a hard, adhering crust/coating on the inner walls of the boiler, it is called scale.