Acid pickling inhibitor and preparation method thereof

Abstract

This invention relates to pickling inhibitor and its preparation method, in which, this invented product is composed of concentrated liquid of hexanitro-production waste water, organic inhibitor and a surface active agent. The preparation mehod includes: utilizing waste water in the production as the main material to evaporate, concentrate and filter it to remove impurities then adding small amount of organic inhibitor, inorganic inhibitor and surface active agent and mixing them to get the product.

Description

technical field [0001] The invention belongs to the technical field of metal anticorrosion, and in particular relates to a pickling corrosion inhibitor with corrosion and fog suppression properties and a preparation method thereof. Background technique [0002] As an important engineering material, metal has been widely used all over the world for a long time. However, the corrosion of metal has become a global problem. The economic loss caused by metal corrosion to the development of the national economy accounts for about 1.5% to 4.2% of the GDP of the year. Corrosion researchers have created and developed many anti-corrosion measures, and corrosion inhibitors play an important role in various anti-corrosion methods due to their advantages of small dosage, low price, wide source, good effect and strong versatility. It is widely used in various fields of industrial sectors. [0003] Pickling corrosion inhibitor is a corrosion inhibitor that can prevent metal from corrodin...

AI Technical Summary

Problems solved by technology

The corrosion inhibitors currently used are mainly inorganic corrosion inhibitors and artificially synthesized organic corrosion inhibitors, which have problems such as unstable performance, high production cost, complicated preparation process, and serious environmental pollution.