Corrosion and scale inhibitor as well as preparation method and using method thereof

Abstract

The invention discloses a corrosion and scale inhibitor as well as a preparation method and a using method thereof. The corrosion and scale inhibitor comprises the following components: PBTC (2-phosphonobutane-1,2,4-tricarboxylic acid), HEDP (1-hydroxyethylidene-1,1-diphosphonic acid), and further comprises ATMP (amino trimethylene phosphonic acid), zinc sulphate heptahydrate and sodium hexametaphosphate. The preparation method for the corrosion and scale inhibitor comprises the following steps: firstly, adding the components into a stirrer for stirring; then, adding water and PBTC, HEDP and ATMP; and finally, adding zinc sulphate heptahydrate active components and sodium hexametaphosphate. The using method for the corrosion and scale inhibitor comprises the following steps: with the using concentration in circulating water as 46 PPM, calculating the amount of the added medicament every four hours per turn according to the calculated water consumption per hour, wherein the amount of the added medicament=water consumption per hour*using concentration*4, adding twice per turn every 4 hours, and uniformly adding the medicament into a circulating water tank. The corrosion and scale inhibitor has relatively good corrosion and scale inhibitor, obvious threshold effect, and can be used for solving the problem that the circulating cooling water system equipment is easy to corrode; and moreover, the operation is simple, convenient and quick, safe and efficient.

Description

technical field [0001] The invention relates to a corrosion and scale inhibitor, in particular to a corrosion and scale inhibitor for circulating water and its preparation method and use method. Background technique [0002] my country is a country seriously short of water resources and one of the 13 water-poor countries in the world. Among them, the per capita water resources of 18 provinces, municipalities, and autonomous regions are lower than the 2000m per capita water resources reviewed by the United Nations Sustainable Development Commission. 3 . The serious shortage of water supply will definitely affect the normal production and life, and seriously affect the economic development. [0003] In order to alleviate the contradiction between the shortage of water resources and economic growth, circulating cooling water is a major source of industrial water. With the concentration of impurities in circulating cooling water, prominent problems such as scaling, corrosion an...

AI Technical Summary

Problems solved by technology

The serious shortage of water supply will definitely affect the normal production and life, and seriously affect the economic development

[0003] In order to alleviate the contradiction between the shortage of water resources and economic growth, circulating cooling water is a major source of industrial water. With the concentration of impurities in circulating cooling water, prominent problems such as scaling, corrosion and biofouling will occur in the circulating cooling water system, resulting in thermal efficiency. The order of magnitude decline not only wastes a lot of energy, but also greatly reduces the service life of the entire system due to rusting of pipes and equipment

[0004] It is difficult for a single compound corrosion and scale inhibitor to completely solve the simultaneous corrosion and scaling obstacles in the water treatment system, and it is difficult to solve the multi-material corrosion problem that may exist in the system at the same time. The synergistic effect between multiple agents must be used To meet the design requirements of the water treatment system and ensure the normal and continuous operation of the system