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Ether-based itaconic acid sulfonate type multi-copolymer scale inhibitor and method for preparing same

A technology based on itaconic acid sulfonate and multi-component copolymers, which is applied in the fields of scale removal and water softening, chemical instruments and methods, water/sludge/sewage treatment, etc., and can solve the problems of poor scale inhibition effect and inorganic addition amount Large, single and other problems, to achieve good dispersion, simple production process, the formation of scale and the effect of adhesion inhibition

Inactive Publication Date: 2012-05-23
山东省特种设备检验研究院淄博分院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of inorganics is large, and the scale inhibition effect is poor; the functional groups of polycarboxylates and organic phosphines are relatively simple; the addition of multi-component copolymers has the advantages of less addition, superior performance, and high temperature resistance.

Method used

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  • Ether-based itaconic acid sulfonate type multi-copolymer scale inhibitor and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In a four-neck flask equipped with a mechanical stirrer, a constant pressure dropping funnel, and a thermometer, add 130 g of itaconic acid, 72 g of isopropanol, and 400 g of distilled water, and heat to 60 ° C to completely dissolve the itaconic acid; Dissolve 18g of sodium in 50g of distilled water, add it quickly after itaconic acid dissolves; then heat up to 90°C; dissolve 18g of sodium propylene sulfonate in 55g of distilled water, add 100g of distilled water and 15g of sodium persulfate to prepare the initiator; Add 27g of sodium hypophosphite and 15g of α-allyl glyceryl ether to 100g of distilled water to prepare a reducing agent; Evenly drop into the beaker within 2 hours, maintain the reaction temperature at 90 ° C, after the monomer and initiator are added dropwise, continue to keep warm (insulated for 20 minutes) and react for a period of time (hereinafter referred to as "reaction time"). Stop heating, stirring, distill, recover isopropanol, control the tempe...

Embodiment 2

[0036]In a four-necked flask equipped with a mechanical stirrer, a constant pressure dropping funnel, and a thermometer, add 150 g of itaconic acid, 72 g of isopropanol, and 400 g of distilled water, and heat to 60 ° C to completely dissolve the itaconic acid; Dissolve 8g of sodium in 50g of distilled water, add it quickly after itaconic acid dissolves; then heat up to 90°C; dissolve 8g of sodium propylene sulfonate in 55g of distilled water, add 100g of distilled water and then 8g of sodium persulfate to prepare the initiator; Add 8g of sodium hypophosphite and 8g of α-allyl glyceryl ether to 100g of distilled water to prepare a reducing agent; Evenly drop into the beaker within 2 hours, maintain the reaction temperature at 90 ° C, after the monomer and initiator are added dropwise, continue to keep warm (insulated for 20 minutes) and react for a period of time (hereinafter referred to as "reaction time"). Stop heating, stirring, distill, recover isopropanol, control the temp...

Embodiment 3

[0040] In a four-necked flask equipped with a mechanical stirrer, a constant pressure dropping funnel, and a thermometer, add 120 g of itaconic acid, 72 g of isopropanol, and 400 g of distilled water, and heat to 60 ° C to completely dissolve the itaconic acid; Sodium 30g is dissolved in 80g distilled water, after itaconic acid dissolves, add quickly; then heat up to 90°C; dissolve 30g sodium propylene sulfonate in 100g distilled water, add 100g distilled water and then add 18g sodium persulfate to prepare the initiator; Add 36g of sodium hypophosphite and 24g of α-allyl glyceryl ether to 100g of distilled water to prepare a reducing agent; Evenly drop into the beaker within 2 hours, maintain the reaction temperature at 90 ° C, after the monomer and initiator are added dropwise, continue to keep warm (insulated for 20 minutes) and react for a period of time (hereinafter referred to as "reaction time"). Stop heating, stirring, distill, recover isopropanol, control the temperatu...

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Abstract

The invention relates to a multiple scale-resisting corrosion inhibitor, in particular to an ether-based itaconic acid sulfonate type multi-copolymer scale inhibitor and a method for preparing the same. The scale inhibitor is characterized by being prepared by the aqueous polymerization of alpha-allyl glyceroether, itaconic acid and sulfonate in an initiator system; and based on the mass of the itaconic acid, the additive amount of the sulfonate is 10 to 50 percent, the additive amount of the alpha-allyl glyceroether is 5 to 20 percent, the initiator content is 5 to 30 percent, and the additive amount of sodium hypophosphite is 5 to 30 percent. In the method, the itaconic acid serving as the raw material undergoes aqueous polymerization with the alpha-allyl glyceroether and the sulfonate,the production process is simple, residual monomers of the product is little, and three-wastes are not emitted; and the polymer prepared by the method can efficiently inhibit formation and adhesion of the scale layer such as carbonate, sulfate, phosphate and silicate, and better disperse iron oxide, sludge and the like.

Description

technical field [0001] The invention relates to a multi-element scale and corrosion inhibitor and a preparation method thereof, in particular to an ether-based itaconic acid sulfonate multi-element copolymer scale inhibitor and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's economy, the scarcity and pollution of water resources have become one of the important factors affecting my country's economic development. At present, more than 300 large and medium-sized cities are short of water, and one-third of them are seriously short of water, especially the developed cities such as the eastern coastal cities. Groundwater resources are exhausted in many places, and guest water resources are limited. Water conservation, sewage treatment and development of new water sources are equally important. Water is a commonly used cooling medium in industrial heat exchange systems. The consumption of industrial circulat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/02C02F5/10
Inventor 张文辉刘秀华张兴法
Owner 山东省特种设备检验研究院淄博分院
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