Composite scale and corrosion inhibitor and its application

Abstract

The present invention discloses composite scale and corrosion inhibitor and its preparation. The composite scale and corrosion inhibitor is compounded with sodium humate 40-45 wt%, polyepoxy sodium succinate 25-30 wt%, borax 20-25 wt% and sodium carbonate 10-15 wt%. It is compounded with organic and inorganic scale and corrosion inhibitor, dispersing and chelating agent and auxiliary agent. The corrosion inhibitor has synergistic effect of the components, excellent compatibility with sterilizing agent and high tolerance to iron ion and halogen. It has the advantages of low cost, convenient operation, complete biodegradation, no environmental pollution, excellent composite performance, etc.

Description

technical field [0001] The invention belongs to a corrosion inhibitor, more specifically to a green and environment-friendly compound scale and corrosion inhibitor and application thereof. Background technique [0002] Phosphorus-containing organic corrosion and scale inhibitors are the most widely used and most successful water treatment agents in the domestic industry. They have good performance and are widely used in the following varieties: 1. ATMP, EDTMP, DTPMP, etc. N atoms and methylene phosphonic acid have good corrosion and scale inhibition properties; 2. HEDP contains not only methylene phosphonic acid groups but also hydroxyl groups in the molecule, so it also has good scale and corrosion inhibition properties ; 3. PBTC and other water treatment agents contain both phosphonic acid groups and carboxylic acid groups, and their corrosion and scale inhibition performance is also very good. Therefore, these water treatment agents have been widely used in large quantiti...

AI Technical Summary

Problems solved by technology

[0002] Phosphorus-containing organic corrosion and scale inhibitors are the most widely used and most successful water treatment agents in the domestic industry. They have good performance and are widely used in the following varieties: 1. ATMP, EDTMP, DTPMP, etc. N atoms and methylene phosphonic acid have good corrosion and scale inhibition properties; 2. HEDP contains not only methylene phosphonic acid groups but also hydroxyl groups in the molecule, so it also has good scale and corrosion inhibition properties ; 3. PBTC and other water treatment agents contain both phosphonic acid groups and carboxylic acid groups, and their corrosion and scale inhibition performance is also very good. Therefore, these water treatment agents have been widely used in large quantities, but they have incomplete functions and high phosphorus content. , Mostly based on high molecular polymer chemicals that are difficult to biodegrade