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CN-121990695-A - Environment-friendly high-performance scale inhibitor and preparation method thereof

CN121990695ACN 121990695 ACN121990695 ACN 121990695ACN-121990695-A

Abstract

The invention relates to an environment-friendly high-performance scale inhibitor and a preparation method thereof, and belongs to the technical field of industrial circulating water treatment, wherein the component A comprises, by mass, 5-15% of sodium molybdate, 5-15% of sodium tungstate, 15-25% of sodium polyacrylate, 5-15% of sodium borate, 15-25% of zinc sulfate, 5-10% of zinc chloride, 3-8% of sodium silicate and 2-6% of benzotriazole, and the component B comprises, by mass, 15-25% of HEDP, 15-25% of PBTC, 35-50% of AA/AMPS copolymer and 15-25% of deionized water. According to the environment-friendly high-performance scale inhibitor and the preparation method thereof, a phosphorus-free and low-toxicity formula is adopted, and sodium molybdate, sodium tungstate and other environment-friendly corrosion inhibitors are used for completely replacing traditional phosphorus-based and chromium-based toxic components, so that the risk of eutrophication of water bodies and pollution of heavy metals is avoided from the source, and meanwhile, the polymer such as AA/AMPS and the like selected in the formula has good biodegradability, so that the whole product is safe and low in irritation, and meets the development trend of green chemicals and the strict environmental protection regulation requirement.

Inventors

  • CHENG YANG
  • SUN JIACHAO

Assignees

  • 铂蔚(南通)新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20260407

Claims (10)

  1. 1. An environment-friendly high-performance scale inhibitor is characterized by comprising a component A and a component B; Wherein: The A component comprises, by mass, 5-15% of sodium molybdate, 5-15% of sodium tungstate, 15-25% of sodium polyacrylate, 5-15% of sodium borate, 15-25% of zinc sulfate, 5-10% of zinc chloride, 3-8% of sodium silicate and 2-6% of benzotriazole; the component B comprises, by mass, 15-25% of HEDP, 15-25% of PBTC, 35-50% of AA/AMPS copolymer and 15-25% of deionized water.
  2. 2. The environment-friendly high-performance scale inhibitor according to claim 1, wherein the mass ratio of sodium molybdate to sodium tungstate in the component A is 1:0.8-1.2.
  3. 3. The environment-friendly high-performance scale inhibitor according to claim 1, wherein the total zinc content of zinc sulfate and zinc chloride in the component A accounts for 12-22% of the total mass of the component A.
  4. 4. The environment-friendly high-performance scale inhibitor according to claim 1, wherein the mass ratio of HEDP to PBTC in the component B is 1:0.8-1.2.
  5. 5. The environment-friendly high-performance scale inhibitor according to claim 1, wherein the molar ratio of acrylic acid to AMPS monomer in the AA/AMPS copolymer is 2:1-4:1, and the molecular weight is 3000-8000.
  6. 6. The environment-friendly high-performance scale inhibitor according to claim 1, wherein the addition concentration of the component A is 65-80 mg/L and the addition concentration of the component B is 35-60 mg/L when the scale inhibitor is used.
  7. 7. A method for preparing an environment-friendly high-performance scale inhibitor, which is used for preparing the environment-friendly high-performance scale inhibitor as claimed in any one of claims 1 to 6, and is characterized by comprising the following steps: S1, preparing a component A, namely sequentially adding sodium molybdate, sodium tungstate, sodium polyacrylate, sodium borate, zinc sulfate, zinc chloride, sodium silicate and benzotriazole powder into a stainless steel mixing stirrer according to a proportion, mixing and stirring for 30-60 minutes at room temperature until the powder is uniform, and weighing and packaging; s2, preparing a component B, namely adding HEDP, PBTC, AA/AMPS copolymer and deionized water into a container according to a proportion, and stirring and mixing for 40-80 minutes at a temperature of 30-50 ℃ until a uniform transparent solution is formed.
  8. 8. The method for preparing the environment-friendly high-performance scale inhibitor according to claim 7, wherein the rotating speed of mixing and stirring in the step S1 is 200-400 r/min.
  9. 9. The method for preparing the environment-friendly high-performance scale inhibitor according to claim 7, wherein the rotation speed of stirring and mixing in the step S2 is 100-300 r/min.
  10. 10. An application of the environment-friendly high-performance scale inhibitor, which is characterized in that the environment-friendly high-performance scale inhibitor is applied to the corrosion and scale inhibition treatment of an industrial circulating cooling water system or an evaporative condenser.

Description

Environment-friendly high-performance scale inhibitor and preparation method thereof Technical Field The invention relates to the technical field of industrial circulating water treatment, in particular to an environment-friendly high-performance scale inhibitor for a circulating cooling water system, especially an evaporative condenser, and a preparation method thereof. Background Currently, industrial circulating cooling water systems (particularly evaporative condensers) commonly face problems such as scaling, corrosion, microorganism growth and the like, and seriously affect equipment efficiency and service life. The traditional scale and corrosion inhibitor contains phosphorus, chromium, zinc and other components, and has the following remarkable defects although having a certain effect: 1. The environmental hazard is great, elements such as phosphorus, chromium and the like are easy to cause eutrophication of water bodies or heavy metal pollution, and the environment-friendly requirement is not met; 2. The performance limitation is outstanding, in severe water quality such as high hardness, high alkalinity, high chloride ion and the like, the scale inhibition and corrosion inhibition efficiency of the traditional medicament is seriously reduced, a stable protective film is difficult to form, and the scale layer is hard and is easy to generate local corrosion; 3. Poor chemical stability, easy decomposition and failure under the working condition of high temperature and high pH, and insufficient long-acting property; 4. poor biodegradability, the traditional polymer components are difficult to degrade, and the risk of environmental accumulation exists. Therefore, developing a novel scale inhibitor with high-efficiency scale and corrosion inhibition performance, excellent environmental friendliness, wide water quality adaptability and long-term stability becomes a technical problem which is urgently needed to be solved in the field. Disclosure of Invention Aiming at the defects of the prior art, the invention provides an environment-friendly high-performance scale inhibitor and a preparation method thereof, which have the advantages of environmental friendliness, synergistic efficiency, long-acting stability, strong adaptability, simple preparation and the like, and solve the problems of poor environment friendliness, insufficient performance in high-hardness high-chloride ion water quality, poor long-acting stability and low biodegradability of the traditional scale inhibitor. In order to achieve the above purpose, the present invention provides the following technical solutions: an environment-friendly high-performance scale inhibitor consists of a component A and a component B; Wherein: The A component comprises, by mass, 5-15% of sodium molybdate, 5-15% of sodium tungstate, 15-25% of sodium polyacrylate, 5-15% of sodium borate, 15-25% of zinc sulfate, 5-10% of zinc chloride, 3-8% of sodium silicate and 2-6% of benzotriazole; the component B comprises, by mass, 15-25% of HEDP, 15-25% of PBTC, 35-50% of AA/AMPS copolymer and 15-25% of deionized water. Further, in the component A, the mass ratio of the sodium molybdate to the sodium tungstate is 1:0.8-1.2. Further, in the component A, the total zinc content of zinc sulfate and zinc chloride accounts for 12-22% of the total mass of the component A. Further, in the component B, the mass ratio of HEDP to PBTC is 1:0.8-1.2. Further, the molar ratio of acrylic acid to AMPS monomer in the AA/AMPS copolymer is 2:1-4:1, and the molecular weight is 3000-8000. Further, when the scale inhibitor is used, the adding concentration of the component A is 65-80 mg/L, and the adding concentration of the component B is 35-60 mg/L. The invention provides a preparation method of an environment-friendly high-performance scale inhibitor, which comprises the following steps: S1, preparing a component A, namely sequentially adding sodium molybdate, sodium tungstate, sodium polyacrylate, sodium borate, zinc sulfate, zinc chloride, sodium silicate and benzotriazole powder into a stainless steel mixing stirrer according to a proportion, mixing and stirring for 30-60 minutes at room temperature until the powder is uniform, and weighing and packaging; s2, preparing a component B, namely adding HEDP, PBTC, AA/AMPS copolymer and deionized water into a container according to a proportion, and stirring and mixing for 40-80 minutes at a temperature of 30-50 ℃ until a uniform transparent solution is formed. Further, the rotational speed of mixing and stirring in the step S1 is 200-400 r/min. Further, the rotation speed of stirring and mixing in the step S2 is 100-300 r/min. The invention aims to provide an application of the environment-friendly high-performance scale inhibitor in the corrosion and scale inhibition treatment of an industrial circulating cooling water system or an evaporative condenser. Compared with the prior art, the invention provides the environment-friendly high-perfo