Environment friendly high-efficiency composite scale corrosion inhibitor and production method thereof

Abstract

The invention relates to an environment-friendly high-efficiency composite scale-corrosion inhibitor and a preparation method thereof, which belongs to the technical field of chemical products and is used for solving the problems that the prior scale-corrosion inhibitor contains substances which are difficult to degrade and the processing capacity is difficult to improve. The environment-friendlyhigh-efficiency composite scale-corrosion inhibitor consists of itaconic acid homopolymer, poly (sodium aspartate), alkyl alcohol amide and sodium gluconate, wherein the mass ratio of the four compositions is 1-3 to 1-2 to 2.5-3.5 to 35-38. The preparation method comprises the following steps of synthesis of the itaconic acid homopolymer and compounding with other scale-corrosion inhibitors. The product is phosphor free and highly efficient, comprises the itaconic acid homopolymer with high scale inhibition and dispersion property, the poly(sodium aspartate), the sodium gluconate and other substances, guarantees the scale inhibition property of the medicine due to compatibility and synergism of the complexation capacity of metallic ions, and particularly guarantees high scale inhibition capacity in high-hardness water quality. All the four compositions are degradable, and the degradation rate can reach more than 83 percent after 28 days, so that the environment-friendly high-efficiency composite scale-corrosion inhibitor belongs to an environment-friendly product. When the medicine is used, pre-coating is not required, so that the environment-friendly high-efficiency composite scale-corrosion inhibitor is convenient to use and saves the cost.

Description

technical field The invention relates to a phosphorus-free, biodegradable, environmentally friendly, high-efficiency scale and corrosion inhibitor used for industrial circulating cooling water treatment, belonging to the technical field of chemical products. Background technique Based on the requirements of environmental protection and sustainable development strategies, the research and development of scale and corrosion inhibitors for industrial circulating cooling water has transformed from a single pursuit of stable and efficient scale and corrosion inhibition effects to the requirements of green chemistry to reduce The environmental load of products, that is, to reduce the harm to human health and the environment from the raw materials, production, application, waste recycling and other links of chemical products. Currently, commercially available scale and corrosion inhibitors are generally composed of organic phosphonic acid (HEDP, PBTCA), polymaleic anhydride (HPMA),...

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Problems solved by technology

Among them, the price of sodium molybdate is 170 yuan / kg, and sodium tungstate is 15 yuan / kg, which makes the water treatment cost quite expensive, and these three formulas can only produce a synergistic effect on corrosion inhibition performance, and have no effect on scale inhibition rate. any help

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