Phosphorus-free nitrogen-free slow-release high-efficiency composite scale inhibitor and preparation method thereof

Abstract

The invention discloses a phosphorus-free nitrogen-free slow-release high-efficiency composite scale inhibitor and a preparation method thereof. The phosphorus-free nitrogen-free slow-release high-efficiency composite scale inhibitor is prepared from 20-40 parts of acrylic acid, 40-70 parts of acrylate, 20-30 parts of zinc sulfonate, 18-22 parts of oxidized starch, 25-30 parts of ethanol and 35-42parts of deionized water. The deionized water is prepared through a multi-medium filter, an activated carbon filter, a precision filter, reverse osmosis equipment and other equipment in a reverse osmosis ion exchange mode. The preparation method of the scale inhibitor is low in cost, mass production and application can be performed, the scale inhibitor does not generate calcium phosphate precipitate in the use process to cause eutrophication of a water body, does not generate phosphine compounds and pollutes the environment, and the scale inhibitor is good in scale inhibition effect, and theeffective scale inhibition can also be carried out on other scales or composite scales.

Description

technical field [0001] The invention relates to the technical field of water treatment chemicals, in particular to a phosphorus-free, nitrogen-free, slow-release, high-efficiency composite scale inhibitor and a preparation method thereof. Background technique [0002] In recent years, with the rapid growth of the national economy, many basic industries have also been greatly developed, such as energy, steel, oil refining, large chemical industry, etc., which has led to a significant increase in industrial water consumption year by year, of which cooling water accounts for a large proportion , some departments are even as high as about 90%, especially the rapid development of the water purification industry. In order to save water, the country proposes the water efficiency of RO machines for water purifiers. How to ensure high water efficiency and ensure the service life of RO membranes , Therefore, how to use high-tech, give full play to the advantages of scientific research...

AI Technical Summary

Problems solved by technology

[0003] There are many types of scale inhibitors commonly used. According to the development history of scale inhibitors and the functional groups that play a major role, they can be roughly divided into: 1. Natural polymer scale inhibitors, which emerged in the 1960s. Scale inhibitors are used in water treatment with a large amount of dosage and high cost, so they are rarely used now; 2. Phosphorus-containing polymer scale inhibitors, inorganic phosphorus-containing polymer scale inhibitors are easily hydrolyzed into orthophosphate, resulting in Calcium phosphate precipitates, and organic phosphate is easy to decompose, and once there is a problem of phosphorus pollution to the environment, resulting in eutrophication of water; 3. Nitrogen-containing copolymer scale inhibitors, scale inhibitors with nitrogen as the functional group, in special Under environmental conditions, functional groups may be opened to form nitrogen-containing compounds in water, and nitrite may be formed. At the same time, many existing scale inhibitors have single scale inhibition effects. Usually, a certain scale inhibitor is only effective for one Seed scale has good scale inhibition effect, but its scale inhibition effect on other scales or complex scales is not good. In addition, the existing compound scale inhibitors contain phosphine compounds, which are easy to pollute the environment. Therefore, The present invention designs a phosphorus-free, nitrogen-free slow-release high-efficiency composite scale inhibitor and its preparation method to solve the problems existing in the prior art