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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 scale inhibition. , compared with the traditional organic phosphonic acid (salt) antiscalant, the dosage of this agent is less and does not contain phosphorus, which reduces the formation of flocculent precipitates and greatly improves the antiscaling performance. 3 , CaSiO 3 Scale has excellent scale inhibition performance

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0050] Get the 1.0 generation EDA-PAMAM 20g that comparative example 2 prepares, add 12.5g solid content and be 40% polyepoxysodium sodium succinate (PESA), 12.5g solid content is 40% polyaspartic acid sodium (PASP) , 25g of IA-AMPS with a solid content of 40% and 30g of deionized water, stirred evenly to obtain 100g of a composite scale inhibitor with a solid content of 40%. In the prepared composite antiscalant, the content of 1.0 generation EDA-PAMAM is 20%, and the content of PESA is 5%. The content of PASP was 5%, and the content of IA-AMPS was 10%. The compound antiscalant prepared above was subjected to the performance test experiment of inhibiting silicon scale and calcium scale. The scale inhibition results are shown in Table 2.

Embodiment 2

[0052] Get the 1.0 generation EDA-PAMAM 15g that comparative example 2 prepares, add 12.5g solid content and be 40% polyepoxysodium sodium succinate (PESA), 12.5g solid content is 40% polyaspartic acid sodium (PASP) , 37.5g of IA-AMPS with a solid content of 40% and 22.5g of deionized water, stirred evenly to obtain 100g of a composite antiscalant with a solid content of 40%. In the prepared composite antiscalant, the content of 1.0 generation EDA-PAMAM is 15%, and the content of PESA is 5%. The content of PASP was 5%, and the content of IA-AMPS was 15%. The compound antiscalant prepared above was subjected to the performance test experiment of inhibiting silicon scale and calcium scale. The scale inhibition results are shown in Table 2.

Embodiment 3

[0054] Get the 1.0 generation EDA-PAMAM 10g that comparative example 2 prepares, add 25g solid content and be 40% polyepoxysodium sodium succinate (PESA), 25g solid content is 40% polyaspartic acid sodium (PASP), 25g IA-AMPS with a solid content of 40% and 15 g of deionized water were stirred evenly to obtain 100 g of a composite scale inhibitor with a solid content of 40%. In the prepared composite antiscalant, the content of 1.0 generation EDA-PAMAM is 10%, and the content of PESA is 10%. The content of PASP was 10%, and the content of IA-AMPS was 10%. The compound antiscalant prepared above was subjected to the performance test experiment 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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