Composite non-phosphorus scale inhibitor

A technology of compound scale inhibitor and scale inhibitor, which can be used in descaling and water softening, natural water treatment, special treatment targets, etc., can solve the problem of poor scale inhibition effect, etc. Scaling performance, easy compounding effect

Active Publication Date: 2019-01-04
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a phosphorus-free composite scale inhibitor, which can overcome the problem that the existing organic phosphine scale inhibitors and anionic polymer scale inhibitors and dispersants have poor effect on silicon scale scal

Method used

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  • Composite non-phosphorus scale inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0049] Example 1

[0050] Take 20g of 1.0-generation EDA-PAMAM prepared in Comparative Example 2, add 12.5g of sodium polyepoxysuccinate (PESA) with a solid content of 40%, and 12.5g of polyaspartate sodium (PASP) with a solid content of 40% , 25g of IA-AMPS with a solid content of 40% and 30g of deionized water, stir evenly to obtain 100g of the required composite scale inhibitor with a solid content of 40%. In the prepared composite scale inhibitor, the content of 1.0 generation EDA-PAMAM is 20%, and the content of PESA is 5%. The content of PASP is 5%, and the content of IA-AMPS is 10%. The compound scale inhibitor prepared above was tested for the performance of inhibiting silicon scale and calcium scale. The scale inhibition results are shown in Table 2.

Example Embodiment

[0051] Example 2

[0052] Take 15g of 1.0-generation EDA-PAMAM prepared in Comparative Example 2, add 12.5g of sodium polyepoxysuccinate (PESA) with a solid content of 40%, and 12.5g of polyaspartate sodium (PASP) with a solid content of 40% , 37.5g of IA-AMPS with a solid content of 40% and 22.5g of deionized water, stir evenly to obtain 100g of the required composite scale inhibitor with a solid content of 40%. In the prepared composite scale inhibitor, the content of 1.0-generation EDA-PAMAM is 15%, and the content of PESA is 5%. The content of PASP is 5%, and the content of IA-AMPS is 15%. The compound scale inhibitor prepared above was tested for the performance of inhibiting silicon scale and calcium scale. The scale inhibition results are shown in Table 2.

Example Embodiment

[0053] Example 3

[0054] Take 10g of 1.0-generation EDA-PAMAM prepared in Comparative Example 2, add 25g of sodium polyepoxysuccinate (PESA) with a solid content of 40%, 25g of polyaspartate sodium (PASP) with a solid content of 40%, 25g IA-AMPS with a solid content of 40% and 15g of deionized water are stirred evenly to obtain 100g of the required composite scale inhibitor with a solid content of 40%. In the prepared composite scale inhibitor, the 1.0-generation EDA-PAMAM content is 10%, and the PESA content is 10%. The content of PASP is 10%, and the content of IA-AMPS is 10%. The compound scale inhibitor prepared above was tested for the performance of inhibiting silicon scale and calcium scale. The scale inhibition results are shown in Table 2.

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Abstract

The invention belongs to the field of water treatment chemicals and in particular relates to a composite non-phosphorus scale inhibitor which consists of a dendritic polymer, polyepoxy sodium succinate, sodium polyaspartate, IA-AMPS (Itaconic Acid-2-Acrylamide Amino-2-Propanesulfonic Acid) and water, wherein the dendritic polymer is a polyamide-amine dendritic polymer EDA-PAMAM (Ethylenediamine-Polyamidoaminedendrimer) with ethylenediamine as a core and amino as an end group; IA-AMPS is a copolymer of itaconic acid and 2-acrylamide amino-2-propanesulfonic acid as monomers through free radicalpolymerization reactions. The composite non-phosphorus scale inhibitor is free of phosphorus, the components have synergistic effects, mutual coagulation and polymerization of SiO2-PAMAM are prevented, coagulate precipitate can be reduced, the scale inhibition performance is greatly improved, and excellent scale inhibition performance can be achieved for CaCO3, CaSO4 and CaSiO3.

Description

technical field [0001] The invention belongs to the field of water treatment chemicals, in particular to a phosphorus-free composite scale inhibitor. Background technique [0002] With the enhancement of people's awareness of environmental protection and the continuous acceleration of industrialization, circulating cooling water accounts for a large proportion of industrial water. After repeated use, circulating cooling water is prone to produce inorganic calcium scale, such as calcium carbonate, calcium sulfate, barium sulfate, etc. These calcium scales adhere to the inner surface of the pipeline, which will greatly reduce the cooling efficiency of circulating cooling water and bring great disadvantages to industrial production. Therefore, it is imminent to improve the recycling rate of industrial cooling water. [0003] In order to reduce these inorganic calcium scales, adding scale and corrosion inhibitors to circulating cooling water is the most common and efficient meth...

Claims

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Application Information

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IPC IPC(8): C02F5/12C02F103/02
CPCC02F5/12C02F2303/22C02F2103/023
Inventor 张曙光崔川川史菲菲
Owner SHANDONG UNIV OF TECH
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