Multi-component corrosion and scale inhibitor

A technology of corrosion and scale inhibitor and dispersant, which is applied in the fields of descaling and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problem of water replenishment and system water quality not being very stable, increasing transportation costs, Unable to adjust and other problems, to achieve excellent corrosion and scale inhibition performance, reduce the amount of chemicals, reduce the effect of transportation costs

Active Publication Date: 2015-05-13
OCHEMATE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing circulating cooling water agents are liquid aqueous solutions, which are basically "organic phosphonic acids + multi-polymers + zinc salts + polyphosphates, etc.", due to the diversity of water quality changes in the circulating cooling water system , complexity, resulting in unstable water replenishment and system water quality, it is often necessary to adjust the type and dosage of chemicals according to the on-site water quality, and the traditional single liquid aqueous solution product has a constant component at the factory, so it cannot be adjusted according to the water quality at the customer site Appropriate adjustments
Secondly, because the amount of chemicals in the circulating water system is far more than that of the membrane system, if the amount of chemicals is too large, more packaging will be required and the transportation costs will be increased.

Method used

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  • Multi-component corrosion and scale inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A corrosion and scale inhibitor suitable for medium and low hardness water, including A component and B component, wherein the main components of A component are: HEDP (60% aqueous solution) 20%, DTMPPA 5%, HPAA 15%, DDD45%, AA / AMPS15%. The main components of component B are: zinc chloride 75%, sodium hexametaphosphate 15%, sodium molybdate 10%. Compound A component and B component at a weight ratio of 2:1, and the dilution factor is 6 times. The specific preparation process is as follows: Take 11.3g of component A, 5.7g of component B, and 83g of water to prepare 100g of slow-release scale inhibitor solution. Apply the above solution to water with general hardness (total hardness is 180mg / L, total alkalinity is 112mg / L), and the dosing concentration is 60ppm and 80ppm.

[0028] In the test, the corrosion inhibition performance was tested in accordance with the standard of GB / T18175-2000 rotary coupon method, the test temperature was set at 45°C, the speed was set at ...

Embodiment 2

[0032] A high-efficiency corrosion and scale inhibitor suitable for medium and low hardness water, including component A and component B, wherein the main components of component A and component B are the same as those in Example 1. Compound A component and B component at a weight ratio of 2:3, and the dilution factor is 4 times. The specific preparation process is as follows: Take 10g of component A, 15g of component B, and 75g of water to prepare 100g of corrosion and scale inhibitor solution. The above solution was applied to water with relatively low hardness (90 mg / L total hardness and 72 mg / L total alkalinity), and the dosing concentration was 50 ppm and 80 ppm. The corrosion inhibition test method and scale inhibition test method are the same as in Example 1, and the specific results are shown in Table 2 below.

[0033] Table two: the experimental result of embodiment 2

[0034]

Embodiment 3

[0036]A high-efficiency corrosion and scale inhibitor suitable for medium and low hardness water, including A component and B component, wherein the main components of A component are: HEDP (60% aqueous solution) 21%, HPAA 16%, DDD 39% , T-22518%, deionized water 6%. The main components of component B are: zinc chloride 60%, sodium pyrophosphate 25%, sodium molybdate 15%. Compound A component and B component at a weight ratio of 1:1, and the dilution factor is 4 times. The specific preparation process is as follows: take 12.5g of component A, 12.5g of component B, and 75g of water to prepare 100g of corrosion and scale inhibitor solution. The above solution was applied to medium hardness water (total hardness is 343mg / L, total alkalinity is 223mg / L), and the dosing concentration is 60ppm and 80ppm. The corrosion inhibition test method and scale inhibition test method are the same as in Example 1, and the specific results are shown in Table 3 below.

[0037] Table three: the...

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PUM

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Abstract

The invention relates to a corrosion and scale inhibitor, which comprises a component A and a component B, wherein the component A comprises an organic phosphine compound, a multipolymer dispersant and deionized water; the component B comprises polyphosphate, inorganic zinc salt and molybdate, wherein the mass ratio of the component A to component B is 2:1-1:2. The corrosion and scale inhibitor also comprises a component C, wherein the component C comprises an azole compound, a hydroxide, an organic solvent and deionized water. Compared with a traditional single liquid corrosion and scale inhibitor, the corrosion and scale inhibitor of the invention has strong composite formula adaptability, ratio and dilution times can be timely adjusted according to client on-site water quality; for the terminal clients, storage space is saved, transport cost is reduced, and usage cost of its agent is reduced simultaneously.

Description

technical field [0001] The invention relates to a multi-component concentrated corrosion and scale inhibitor. Background technique [0002] Water is the most widely distributed natural resource on the earth. The total amount of water on the earth is about 1.4×10 9 Km 3 , three-quarters of our planet's surface is covered by water. Although the water storage is very rich, seawater accounts for more than 95% of the entire water storage, and the sum of fresh water is only about 3%. Among the three major environmental problems that plague the world, the shortage of fresh water resources is placed second, which shows the importance of water. Water is not only a natural resource, but also an economic resource, and even a strategic resource. It is the lifeblood of human existence. The Chinese government attaches great importance to the protection of the environment and resources, and puts the protection of water resources at a very prominent strategic height. It is actively buil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
Inventor 袁新兵施力
Owner OCHEMATE MATERIAL TECH CO LTD
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