Novel closed circulating water system corrosion and scale inhibitor and using method thereof

Abstract

The invention relates to a novel closed circulating water system corrosion and scale inhibitor and a using method thereof, and belongs to the technical field of closed system water treatment. The novel closed circulating water system corrosion and scale inhibitor is composed of the following components in percentage by mass: 60-70% of soft water; 8-10% of an alkalinity regulator; 5-10% of an organic amine; 4 to 10% of a molybdate; and 5 to 10% of 2-phospho-1, 2, 4-tricarboxylic acid butane. The novel closed circulating water system corrosion and scale inhibitor has excellent corrosion inhibition performance, the carbon steel annual corrosion rate is lower than 0.075 mm / a, and the stainless steel, copper and copper alloy annual corrosion rate is lower than 0.005 mm / a.

Description

technical field [0001] The invention relates to the technical field of water treatment in a closed system, and specifically provides a novel corrosion and scale inhibitor for a closed circulating water system and a use method thereof. Background technique [0002] The closed circulating water system is referred to as a closed system for short. As the name implies, it refers to the process in which hot or cold water is cooled or heated in a closed circulating system. The closed system is different from the open system. The open circulating water system has evaporation loss and is polluted by impurities in the atmosphere. Requires very little make-up water and is not prone to deposits in the system. The system does not have problems such as water evaporation and salt concentration, and the loss of circulating water and chemicals is very small. In this system, the cooled or heated circulating water conducts heat exchange with the outside through the cooling pipe, taking away ...

AI Technical Summary

Problems solved by technology

The system is quite complicated. Every time a system is changed or a manufacturer is changed, a detailed on-site investigation is required, and technical services and post-maintenance bring a lot of workload; In systems such as demineralized water and pure water, the treatment effect of the agent is not good, and the corrosion is seriously exceeded; although some agent formulas have good corrosion inhibition effects, they are harmful to the environment. Therefore, it is necessary for us to treat them Systematically summarize and screen out general agents suitable for this type of system. These agents should have a wide range of applications (such as different water quality and different working conditions), good treatment effects and environmental friendliness

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