Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 148
is the 1935 THE LOCOMOTIVE 135 removal of the gross amount of scale-forming solids by the lime orlime-soda treatment and the elimination of the remainder by zeolites,sometimes termed base exchange softeners. Under some conditions, combination systems of this type are preferable to either type of… … An extreme example of scale in boiler tubes. In general, chemical softening is effected by the addition of limeand soda ash to the water. Hydrated lime is usually used for this pur-pose and is applied to the water alone or in combination with soda ash,caustic soda, or other softening reagents as…
Locomotives · Steam-boiler explosions
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