Novel non-phosphate inhibitor

Abstract

The invention provides a novel phosphorus-free corrosion inhibitor which is an organic compound with a novel structure. The structure ensures the phosphorus-free, non-toxic and non-pollution of the agent. The agent molecules and the metal surface form multi point absorption or chelate through nitrogen points in the molecules and other hydrophilic group. The thickness of the film-forming is ensured through the long-chain alkane in the molecules. The short-chain alkane form a cross connection in the film-forming process to enhance the compact degree of the film. On the premise that the corrosion inhibitor is ensured to be free from phosphorus by using the method, the corrosion inhibition property of the corrosion inhibitor can be improved.

Description

technical field [0001] The invention relates to the technical field of industrial water treatment, and relates to a corrosion inhibitor for circulating water systems. More specifically, the present invention relates to a novel phosphorus-free corrosion inhibitor containing nitrogen functional groups, carboxyl functional groups, hydroxyl functional groups and the like. Background technique [0002] As the main component of industrial water, industrial circulating cooling water accounts for more than 30-50% of the total water consumption. Improving the level of circulating cooling water treatment and strengthening water-saving measures is an important way to control industrial water waste and save water. [0003] Industrial circulating cooling water technology is one of the important means to save industrial water. However, the metal corrosion problem of water pipes and heat exchangers is a major difficulty in industrial circulating cooling water technology. In recent years...

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Problems solved by technology

[0004] However, while using phosphorus-based chemicals, it also brings the problem of bacteria and algae to the circulating water system, which causes obstacles in operation, especially in the operation of heat exchangers, and leads to excessive dosage of fungicides, which increases operating costs. and control difficulty

At the same time, the use of phosphorus-based chemicals has also brought a large number of phosphorus-containing compounds to industrial discharge water, causing serious excess and pollution of phosphorus in water bodies in many countries, forming environmental hazards such as algal blooms and red tides, and causing serious damage to water resources. pollution and waste

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