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Environment-friendly antiscale dispersant and preparation method thereof

A scale-inhibiting dispersant and an environment-friendly technology, applied in the field of environment-friendly scale-inhibiting dispersant and its preparation, can solve the problems of narrow application range and no performance of scale-inhibiting dispersion

Inactive Publication Date: 2018-12-07
安徽盟拓信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The scale inhibitor is a binary copolymer scale inhibitor, which has good calcium carbonate scale inhibition performance, but does not show other scale inhibition and dispersion properties, and its application range is narrow

Method used

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  • Environment-friendly antiscale dispersant and preparation method thereof
  • Environment-friendly antiscale dispersant and preparation method thereof
  • Environment-friendly antiscale dispersant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An environment-friendly antiscaling and dispersing agent, calculated in parts by weight, includes the following raw materials:

[0021] 50 parts of maleic anhydride, 30 parts of itaconic acid, 29 parts of hydroxyethyl acrylate, 36 parts of cyclodextrin, 11 parts of initiator and 170 parts of water. The initiator is a mixture of ammonium persulfate and sodium bisulfite. The mass ratio of ammonium persulfate to the sodium bisulfite is 3:1.

[0022] The preparation method of environment-friendly antiscaling dispersant comprises the following steps:

[0023] 1) Weighing maleic anhydride, itaconic acid, hydroxyethyl acrylate, cyclodextrin, initiator and water according to the proportioning ratio, first mixing maleic anhydride with part of the water and then stirring and dissolving to obtain an aqueous solution of maleic anhydride;

[0024] 2) dissolving the initiator in a small portion of water to prepare an aqueous initiator solution;

[0025] 3) The aqueous solution of ...

Embodiment 2

[0027] An environment-friendly antiscaling and dispersing agent, calculated in parts by weight, includes the following raw materials:

[0028] 40 parts of maleic anhydride, 25 parts of itaconic acid, 35 parts of hydroxyethyl acrylate, 30 parts of cyclodextrin, 8 parts of initiator and 150 parts of water. The initiator is a mixture of ammonium persulfate and sodium bisulfite. The mass ratio of ammonium persulfate to the sodium bisulfite is 4:1.

[0029] The preparation method of environment-friendly antiscaling dispersant comprises the following steps:

[0030] 1) Weighing maleic anhydride, itaconic acid, hydroxyethyl acrylate, cyclodextrin, initiator and water according to the proportioning ratio, first mixing maleic anhydride with part of the water and then stirring and dissolving to obtain an aqueous solution of maleic anhydride;

[0031] 2) dissolving the initiator in a small portion of water to prepare an aqueous initiator solution;

[0032] 3) The aqueous solution of m...

Embodiment 3

[0034] An environment-friendly antiscaling and dispersing agent, calculated in parts by weight, includes the following raw materials:

[0035] 60 parts of maleic anhydride, 35 parts of itaconic acid, 25 parts of hydroxyethyl acrylate, 40 parts of cyclodextrin, 16 parts of initiator and 200 parts of water. The initiator is a mixture of ammonium persulfate and sodium bisulfite. The mass ratio of ammonium persulfate to the sodium bisulfite is 2:1.

[0036] The preparation method of environment-friendly antiscaling dispersant comprises the following steps:

[0037] 1) Weighing maleic anhydride, itaconic acid, hydroxyethyl acrylate, cyclodextrin, initiator and water according to the proportioning ratio, first mixing maleic anhydride with part of the water and then stirring and dissolving to obtain an aqueous solution of maleic anhydride;

[0038] 2) dissolving the initiator in a small portion of water to prepare an aqueous initiator solution;

[0039]3) The aqueous solution of m...

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PUM

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Abstract

The invention provides an environment-friendly antiscale dispersant and a preparation method thereof. The environment-friendly antiscale dispersant is prepared from the following raw materials in parts by weight: 45-60 parts of maleic acid, 25-30 parts of itaconic acid, 25-35 parts of hydroxypropyl acrylate, 30-40 parts of cyclodextrin, 8-16 parts of an initiator and 150-200 parts of water. The preparation method comprises the following steps: 1) preparing a maleic acid aqueous solution; 2) preparing an initiator aqueous solution; 3) heating the maleic acid aqueous solution to 60-100 DEG C, then adding itaconic acid, hydroxypropyl acrylate and residual water, uniformly stirring the mixture, dropwise adding the initiator aqueous solution, adding cyclodextrin when the 40-60wt% of initiator aqueous solution is dropwise added to the maleic acid aqueous solution, further dropwise adding the remaining initiator aqueous solution continuously while stirring, keeping the temperature for 2-3h continuously after dropwise addition, and cooling the mixture to room temperature. The preparation not only has very good calcium scale inhibition property, but also has very good zinc stabilizing and ferric oxide dispersing abilities.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an environment-friendly antiscaling dispersant and a preparation method thereof. Background technique [0002] In the circulating cooling water system of industrial production, due to the increase of water temperature, the evaporation of water, the concentration of various inorganic ions and organic substances, the hardness, alkalinity and pH value of the circulating water naturally increase, and the alkaline earth metal cations contained in the water, such as Ca 2+ , Mg 2+ 、Ba 2+ and small amounts of other cations such as Fe 2+ , Fe 3+ 、Cu 2+ 、Al 3+ , Zn 2+ etc., will react with SO in water 4 2- , CO 3 2- 、HCO 3 - , OH - 、PO 4 3- , SiO 3 2- and other anions to form insoluble inorganic salts such as Ca 3 (PO 4 ) 2 , Ca(CO 3 ) 2 , CaSO 4 , Mg(OH) 2 etc., depositing scale on the surface of pipes and heat exchangers, resulting in reduced ...

Claims

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Application Information

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IPC IPC(8): C02F5/10
CPCC02F5/10
Inventor 汪鹏郭元
Owner 安徽盟拓信息科技有限公司
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