The invention relates to the field of
industrial water treatment agents, and discloses a high-
hardness water
corrosion and scale inhibitor and a preparation method thereof. The scale inhibitor comprises the following components in parts by weight: 15-25 parts of an organic phosphonic acid compound; 10 to 20 parts of a polycarboxylic acid
polymer; 3-8 parts of
zinc salt; 2-5 parts of an
azole compound; 5-12 parts of a cosolvent; the total parts by weight are 100; the preparation method comprises the steps of
raw material preparation, mixing and dissolving, sequential addition and reaction control,
system optimization and finished product preparation. In the scale inhibitor, the organic phosphonic acid and the polycarboxylic acid
polymer synergistically inhibit scale, and the
zinc salt and the
azole compound synergistically inhibit
corrosion, so that the scale inhibitor can stably play a role in high-
hardness and high-
alkalinity water, effectively inhibit
corrosion and scaling of equipment, prolong the service life of the equipment and reduce the operation cost; the preparation process is simple, all the components are easy to obtain, the cost is controllable, and industrial production, popularization and application are facilitated.