Dimethyl itaconate sulfonate multi-copolymer scale inhibitor and preparation method thereof

Abstract

The invention relates to a dimethyl itaconate sulfonate multi-copolymer scale inhibitor and a preparation method thereof, which belong to the technical field of chemical industry. The scale inhibitor is prepared by performing aqueous polymerization on dimethyl itaconate, itaconic acid and sulfonate under an initiator system. Based on the mass of the itaconic acid, the adding amount of the sulfonate is between 10 and 50 percent, the adding amount of the dimethyl itaconate is between 5 and 100 percent, the initiator content is between 5 and 30 percent and sodium hypophosphite is between 5 and 30 percent. The itaconic acid serving as a raw material undergoes aqueous solution free radical polymerization with the dimethyl itaconate and the sulfonate in the presence of the initiator, so that production process is simple, the product has a small quantity of residual monomers and three wastes are not discharged. The polymer prepared by the method has efficient inhibitory action on the formation and attachment of fouling layers such as carbonate, sulphate, phosphate, silicate and the like in a cooling water system and plays a good role in dispersing iron oxide, sludge and the like.

Description

technical field [0001] The invention relates to a multi-component scale and corrosion inhibitor and a preparation method thereof, belonging to the technical field of chemical industry. 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. In many places, groundwater resources are exhausted and guest water resources are limited. Therefore, saving water, treating sewage and developing new water sources are equally important. Water is a commonly used cooling medium in industrial heat exchange systems. The consumption of industrial circulating cooling water accounts for about 70% of industrial water consumption....

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.

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