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Environment friendly high-efficiency composite scale corrosion inhibitor and production method thereof

A scale and corrosion inhibitor, high-efficiency technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve the problems of high cost of water treatment and no help in scale inhibition rate , achieve the effect of cost saving, high corrosion inhibition performance and convenient use

Inactive Publication Date: 2009-05-13
HEBEI ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the price of sodium molybdate is 170 yuan / kg, and sodium tungstate is 15 yuan / kg, which makes the water treatment cost quite expensive, and these three formulas can only produce a synergistic effect on corrosion inhibition performance, and have no effect on scale inhibition rate. any help

Method used

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  • Environment friendly high-efficiency composite scale corrosion inhibitor and production method thereof
  • Environment friendly high-efficiency composite scale corrosion inhibitor and production method thereof
  • Environment friendly high-efficiency composite scale corrosion inhibitor and production method thereof

Examples

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example 1

[0030]Example 1: Get itaconic acid, ammonium ferrous sulfate, isopropanol, water, 30% aqueous hydrogen peroxide and 11% aqueous sodium bisulfite according to the mass ratio of 50:0.2:0.8:1:1.7:0.1. Add itaconic acid, ferrous ammonium sulfate, isopropanol and water into a reactor equipped with a reflux condenser and a stirring device in sequence, raise the temperature to 95°C, keep the temperature at 95±1°C, and then add hydrogen peroxide and hydrogen peroxide dropwise at the same time The sodium bisulfate aqueous solution was added dropwise after 4 hours, the temperature was raised to 100±1°C, and the reaction was continued for 1 hour to prepare the itaconic acid homopolymer, which was cooled and discharged. According to the mass ratio of 2:2:3.5:37, itaconic acid homopolymer, sodium polyaspartate, alkyl alcohol amide, and sodium gluconate are used to prepare a compound scale and corrosion inhibitor, and the dosage is 89mg / L. The test results show that the static scale inhibit...

example 2

[0031] Example 2: Get itaconic acid, ferrous ammonium sulfate, isopropanol, water, 30% aqueous hydrogen peroxide and 11% aqueous sodium bisulfite according to the mass ratio of 60:0.3:0.7:1:1.8:0.1. Add itaconic acid, ferrous ammonium sulfate, isopropanol and water into a reactor equipped with a reflux condenser and a stirring device in sequence, raise the temperature to 95°C, keep the temperature at 95±1°C, and then add hydrogen peroxide and hydrogen peroxide dropwise at the same time The sodium bisulfate aqueous solution was added dropwise after 4 hours, the temperature was raised to 100±1°C, and the reaction was continued for 1 hour to prepare the itaconic acid homopolymer, which was cooled and discharged. According to the mass ratio of 3:1.5:2.5:38, itaconic acid homopolymer, sodium polyaspartate, alkyl alcohol amide, and sodium gluconate are used to prepare a compound scale and corrosion inhibitor, and the dosage is 87mg / L. The test results show that the static scale inhi...

example 3

[0032] Example 3: Take itaconic acid, ferrous ammonium sulfate, isopropanol, water, 30% aqueous hydrogen peroxide and 11% aqueous sodium bisulfite according to the mass ratio of 55:0.25:0.75:1:1.75:0.1. Add itaconic acid, ferrous ammonium sulfate, isopropanol and water into a reactor equipped with a reflux condenser and a stirring device in sequence, raise the temperature to 95°C, keep the temperature at 95±1°C, and then add hydrogen peroxide and hydrogen peroxide dropwise at the same time The sodium bisulfate aqueous solution was added dropwise after 4 hours, the temperature was raised to 100±1°C, and the reaction was continued for 1 hour to prepare the itaconic acid homopolymer, which was cooled and discharged. According to the mass ratio of 1:1.5:2.5:36, itaconic acid homopolymer, sodium polyaspartate, alkyl alcohol amide, and sodium gluconate are used to prepare a compound scale and corrosion inhibitor, and the dosage is 84mg / L. The test results show that the static scale ...

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Abstract

The invention relates to an environment-friendly high-efficiency composite scale-corrosion inhibitor and a preparation method thereof, which belongs to the technical field of chemical products and is used for solving the problems that the prior scale-corrosion inhibitor contains substances which are difficult to degrade and the processing capacity is difficult to improve. The environment-friendly high-efficiency composite scale-corrosion inhibitor consists of itaconic acid homopolymer, poly (sodium aspartate), alkyl alcohol amide and sodium gluconate, wherein the mass ratio of the four compositions is 1-3 to 1-2 to 2.5-3.5 to 35-38. The preparation method comprises the following steps of synthesis of the itaconic acid homopolymer and compounding with other scale-corrosion inhibitors. The product is phosphor free and highly efficient, comprises the itaconic acid homopolymer with high scale inhibition and dispersion property, the poly(sodium aspartate), the sodium gluconate and other substances, guarantees the scale inhibition property of the medicine due to compatibility and synergism of the complexation capacity of metallic ions, and particularly guarantees high scale inhibition capacity in high-hardness water quality. All the four compositions are degradable, and the degradation rate can reach more than 83 percent after 28 days, so that the environment-friendly high-efficiency composite scale-corrosion inhibitor belongs to an environment-friendly product. When the medicine is used, pre-coating is not required, so that the environment-friendly high-efficiency composite scale-corrosion inhibitor is convenient to use and saves the cost.

Description

technical field [0001] The invention relates to a phosphorus-free, biodegradable, environmentally friendly, high-efficiency scale and corrosion inhibitor used for industrial circulating cooling water treatment, belonging to the technical field of chemical products. Background technique [0002] Based on the requirements of environmental protection and sustainable development strategies, the research and development of scale and corrosion inhibitors for industrial circulating cooling water has transformed from a single pursuit of stable and efficient scale and corrosion inhibition effects to the requirements of green chemistry to reduce The environmental load of products, that is, to reduce the harm to human health and the environment from the raw materials, production, application, waste recycling and other links of chemical products. Currently, commercially available scale and corrosion inhibitors are generally composed of organic phosphonic acid (HEDP, PBTCA), polymaleic a...

Claims

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Application Information

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IPC IPC(8): C02F5/12
Inventor 刘振法张利辉闫美芳张彦河王育琳
Owner HEBEI ENERGY RES INST