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

A compound antiscalant and slow-release technology, which is applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve the problem of poor anti-scaling effect of other kinds of scales or complex scales, Environmental pollution, single scale inhibition effect, etc., to achieve good scale inhibition effect, ensure drying effect, and fast heating speed

CN112456658AInactive Publication Date: 2021-03-09尚玉忠
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-03-09
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

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.
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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...

Examples

Embodiment 1

[0026] A phosphorus-free, nitrogen-free, slow-release, high-efficiency composite scale inhibitor is composed of the following raw materials: ingredients: 20-40 parts of acrylic acid, 40-70 parts of acrylate, 20-30 parts of zinc sulfonate, 18-22 parts of oxidized starch, 25 parts of ethanol -30 parts, 35-42 parts of deionized water.

[0027] Deionized water is prepared by reverse osmosis ion exchange through a variety of equipment such as multi-media filters, activated carbon filters, precision filters, and reverse osmosis equipment.

Embodiment 2

[0029] A method for preparing a phosphorus-free, nitrogen-free slow-release high-efficiency composite scale inhibitor, comprising the following steps:

[0030] Step 1: take each raw material in proportion for subsequent use;

[0031] Step 2: Add oxidized starch, ethanol, and deionized water into the reaction kettle in proportion through the feeding equipment, heat the mixture to 50°C, and fully stir and mix the mixture at the same time;

[0032] Step 3: Add acrylic acid, acrylate, and zinc sulfonate in proportion, then increase the heating temperature of the reactor to 400°C, and continue the reaction for 2 hours under 3 atmospheric pressure;

[0033] Step 4: After completing the reaction, wait for the temperature and pressure to drop to normal temperature and pressure;

[0034] Step 5: using the unloading assembly to take out the solid matter obtained from the reaction;

[0035] Step 6: Dry it at 120°C through the drying equipment, and store the processed solid matter into ...