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Preparation method of efficient scale-inhibiting corrosion-inhibiting low-phosphorous water quality stabilizer

A water quality stabilizer, anti-scale and corrosion technology, applied in the direction of scale removal and water softening, chemical instruments and methods, natural water treatment, etc., can solve the discharge of phosphorus-containing substances, environmental pollution, and the effect of scale and corrosion inhibition is not obvious, etc. problems, to achieve the effect of preventing corrosion, improving scale and corrosion inhibition performance, excellent calcium carbonate scale and calcium sulfate scale resistance

Inactive Publication Date: 2018-02-23
高产明
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a high-efficiency anti-scale and anti-corrosion type low-phosphorus water quality stabilizer for the current common water quality stabilizers that have the discharge of phosphorus-containing substances, resulting in environmental pollution and ineffective scale and corrosion inhibition effects. The preparation method of the agent

Method used

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  • Preparation method of efficient scale-inhibiting corrosion-inhibiting low-phosphorous water quality stabilizer

Examples

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Effect test

example 1

[0024] Weigh 30g of L-aspartic acid and put it into a beaker with 6mL of sulfuric acid solution with a mass fraction of 35%, and conduct a polycondensation reaction at 180°C for 35min to obtain a polycondensation product, then add 7mL of 20% sulfuric acid to the polycondensation product Ammonia water, 4mL ethanolamine, 3mL phosphorus trichloride and 2mL formaldehyde solution with a mass fraction of 37%, after the heat preservation reaction was continued for 20min, the modified self-made polyaspartic acid was obtained. Weighed 20g limes, peeled and chopped, and then put into Squeeze the juice in a juicer with 30mL of deionized water for 6 minutes to obtain a mixed solution containing citric acid, mix the mixed solution containing citric acid, ethylene glycol and 1,2-xylene at a volume ratio of 3:2:1 Place in a four-necked flask equipped with a stirring bar, a reflux condenser and a thermometer, stir for 2 hours under nitrogen protection and a temperature of 80°C, then add 2% n-b...

example 2

[0026] Weigh 40g of L-aspartic acid and put it into a beaker with 7mL of sulfuric acid solution with a mass fraction of 35%, and conduct a polycondensation reaction at 230°C for 48min to obtain a polycondensation product, then add 8mL of 20% sulfuric acid to the polycondensation product In ammonia water, 5mL ethanolamine, 4mL phosphorus trichloride and 3mL formaldehyde solution with a mass fraction of 37%, after continuing the heat preservation reaction for 25min, the modified self-made polyaspartic acid was obtained, weighed 25g limes, peeled and chopped, and then put into Squeeze the juice in a juicer with 40mL deionized water for 7 minutes to obtain a mixed solution containing citric acid, mix the mixed solution containing citric acid, ethylene glycol and 1,2-xylene at a volume ratio of 3:2:1 Place in a four-neck flask equipped with a stirring bar, a reflux condenser and a thermometer, stir for 3 hours under nitrogen protection and a temperature of 90°C, then add 2% n-butano...

example 3

[0028]Weigh 50g of L-aspartic acid and put it into a beaker with 8mL of sulfuric acid solution with a mass fraction of 35%, and conduct a polycondensation reaction at 280°C for 60min to obtain a polycondensation product, then add 9mL of 20% sulfuric acid to the polycondensation product Ammonia water, 6mL ethanolamine, 5mL phosphorus trichloride and 4mL formaldehyde solution with a mass fraction of 37% were added, and the heat preservation reaction was continued for 30 minutes to obtain modified self-made polyaspartic acid. Weighed 30g of limes, peeled and chopped, and then put into Squeeze the juice in a juicer with 50 mL of deionized water for 8 minutes to obtain a mixed solution containing citric acid, mix the mixed solution containing citric acid, ethylene glycol and 1,2-xylene at a volume ratio of 3:2:1 Place in a four-necked flask equipped with a stirring bar, a reflux condenser and a thermometer, stir for 4 hours under nitrogen protection and a temperature of 100°C, then ...

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Abstract

The invention relates to the technical field of water quality stabilizers, in particular to a preparation method of an efficient scale-inhibiting corrosion-inhibiting low-phosphorous water quality stabilizer. According to the preparation method, L-aspartic acid and sulfuric acid are used for being subjected to reaction at a high temperature to produce polysuccinimide, ammonia, ethanolamine, phosphorus trichloride and formalin are mixed to modify the polysuccinimide, the modified polysuccinimide is introduced onto carboxyl and phosphate, and the mixture and metal ions Ca2+ form a stable chelate, so that the scale-inhibiting performance and the corrosion-inhibiting performance of the water quality stabilizer are improved. Etidronic acid, a citric acid polymer, polyacrylic acid, polycarboxylic acid are added and form a stable complex with multiple kinds of metal ions so that oxide on the surface of metal can be dissolved. The polycarboxylic acid is subjected to chelation in water, and absorption is conducted due to polar groups, so that scale is inhibited, the scale-inhibiting performance and the corrosion-inhibiting performance of the water quality stabilizer are further improved, and the method is not only economical but also environmentally friendly and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of water quality stabilizers, in particular to a preparation method of a high-efficiency scale and corrosion inhibiting low-phosphorus water quality stabilizer. Background technique [0002] In recent years, the discharge of industrial flue gas, industrial wastewater, coal chemical industry and other wastewater has caused extreme pollution of the environment, posing a serious threat to the normal life of the people. At present, the control of air pollution and sewage mainly depends on emission reduction. Emission reduction means that some enterprises with serious pollution may be shut down, and the employees of enterprises will be laid off if they close down. This will not only affect the national fiscal revenue, but also leave social hidden dangers. [0003] In the circulating cooling water system, fouling and corrosion are common problems, which seriously affect the economic benefits of the product. In re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14C02F5/10C02F103/02
CPCC02F5/10C02F5/14C02F2103/023C02F2303/08C23F11/10C23F14/02
Inventor 高产明杨立军张淑娴
Owner 高产明
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