Spanish English Chinese

The problem of corrosion and microbial susceptibility poses a major hazard to industrial production in the water use of modern plants. Therefore, the circulating cooling water must be treated with water treatment chemicals. This will stabilize the water quality. And ensure the high efficiency of production and the safety of chemical equipment.

The scale inhibitor mainly solves the problem of the water circulation system from the following three aspects.

water treatment chemicals

First, scale inhibition.

Various salts are dissolved in natural water. Such as bicarbonate, carbonate, sulfate, silicate and so on. When natural water enters the circulating water system as supplemental water. The water is concentrated by evaporation and the concentration of ions in the water increases. Especially the bicarbonate in water. This salt is the main component of scale adhesion in cooling water.

The addition of a high-efficiency scale inhibitor can inhibit and destroy the normal growth of inorganic salt crystals such as calcium carbonate. Slows down the growth rate of the crystal. Thereby reducing the formation of salt scale. The scale inhibitor forms a water-soluble complex with Ca2+, Mg2+, and the like. Thereby the solubility of the inorganic salt is increased. In this way, it acts as a scale inhibitor.

The main products are ATMP, HEDP, PBTC, DETPMP and so on.

Second, corrosion inhibition.

The second problem is the corrosion of metal equipment. The surface of the metal (carbon steel, stainless steel, copper, etc.) is in contact with water. The water contains various impurities such as dissolved oxygen and CO2. An electrochemical reaction occurs due to the potential difference. Thereby causing corrosion damage to the metal.

Corrosion leads to a shortened life of the equipment. Corrosion products form fouling which reduces heat exchange efficiency. Eventually, the heat exchanger was leaked and the production was unexpectedly stopped.

There are many ways to control the corrosion of a circulating water system. The pharmaceutical method is one of them. By adding and maintaining a certain amount of corrosion inhibitor to the circulating water. A dense metal oxide film or other types of film on the surface of the metal. In order to achieve corrosion, the corrosion process is carried out.

Corrosion and scale inhibitors can greatly reduce the corrosion rate of the equipment. Equipment life is greatly extended. Experiments show that after the heat exchanger pipeline equipment is prevented by the corrosion inhibitor, the service life of the equipment is extended by about 40% on average.

The main products are ATMP Na5, ATMP Na4, DETPMP and so on.

Third, sterilization and algae killing

The open circulating water system has sufficient light and a suitable temperature. And the abundant nutrient source in the water is conducive to the growth of microorganisms. This leads to biological slime and corrosion. The harm that microorganisms bring to the system is nothing more than dirt and corrosion. These hazards are often mixed with the dangers of scale and electrochemical corrosion.

Microbial slime is composed of microbial cells and viscous substances (polysaccharides, proteins, etc.) that are bonded together. In open-circuit circulating cooling water systems, especially slime bacteria cause more failures. The second is the problems and treatments of algae, mold (filamentous bacteria), and jersey bacteria (filamentous fine water system).

For circulating cooling water systems. In order to cooperate with the system to prevent scale and improve corrosion inhibition. Water treatment companies need to regularly add bactericidal algaecide for treatment. For this circulation system, oxidizing and non-oxidizing bactericides are used alternately. This will prevent bacteria from developing resistance. Improve the sterilization effect.

The main products are benzalkonium chloride, CMIT/MIT, DBNPA, and THPS.

In summary, the scale inhibitor mainly solves the problem of the water circulation system from the following scale inhibition, corrosion inhibition, and sterilization and algae elimination.

The scale inhibitor has high specific gravity and low specific gravity. Which is better?

Many IRO customers are involved in the specific gravity of the scale inhibitor when using scale inhibitors. So is the specific gravity of the scale inhibitor high or low?

Generally speaking, the scale inhibitor under the same formula is, of course, the higher the specific gravity, the better. But it should also distinguish the scope of application. For example, some scale inhibitors are specifically designed to prevent carbonate scaling. Some are used to prevent sulfate scaling. Some are used to prevent phosphate fouling. Some are used to prevent silica fouling.

Everyone knows that scaling measures for carbonates are easy to control. The precipitation of calcium carbonate can be effectively controlled even without adding acid. The principle is very simple, adding hydrochloric acid or sulfuric acid to adjust the pH of the raw water. This allows the bicarbonate ions to be not hydrolyzed to carbonate in certain acidic influent water.

Therefore, it is often possible to effectively prevent the precipitation of calcium carbonate without adding a scale inhibitor. However, the addition of the scale inhibitor can be achieved with a certain degree of effort, and the amount of acid can be reduced.

Because of the scaling process of sulfate, phosphate, and silica is complicated. Control is also not easy. In particular, the scale of silicates can also be complexed with metal ions such as iron ions, manganese ions, and aluminum ions. This makes the cleaning process even more difficult. However, the formulation and production process of such scale inhibitors is also complicated, so it is not possible to judge the quality of the products from the specific gravity.

Taking into account comprehensively, the quality of the scale inhibitor is not only judged from the proportion of the proportion. Also, consider other factors. In general, it is possible to measure the scale inhibition rate of the product through a small sample test, which is a very good criterion.

Leave a Reply

Your email address will not be published. Required fields are marked *

08Jun 2020

There are many polyaspartic acid manufacturers and suppliers on Google. Some of them are trading companies, and some are real manufacturers. They are also under the banner of manufacturers and have also done “factory field certification”. This is also the case in many B2B yellow pages. Therefore, the business license says that the manufacturer may […]

26May 2020

The basic types of papermaking fungicides are mainly divided into two categories: inorganic fungicides and organic fungicides. According to different action principles, inorganic fungicides can be divided into oxidized type and reduced type. The reducing bactericide has a bactericidal effect due to its reducibility. Such as sulfurous acid and its salts. Oxidizing fungicides use their […]

11Mar 2020

Abstract: Computational chemists have actually produced a unique, synthetic, three-stranded particle that operates just like a natural metalloenzyme, or an enzyme which contains metal ions. Enzymes are nature’s powerhouses. Discovered in the cells of all animals, plants, as well as every other living microorganism, they accelerate the chain reactions that activate countless organic functions– from […]

31Oct 2019

Benzotriazole Corrosion Inhibitor Analysis in the Action Mechanism Abstract: This post introduces the properties and mechanism of benzotriazole corrosion inhibitors. The synergistic action of benzotriazole and imidazole better illustrates the progress of the sustained release. Combined with the corrosion example of copper in sodium chloride solution to illustrate the corrosion inhibition of triazole compounds. Keywords: […]

17Sep 2019

Abstract: A water-soluble copolymer scale inhibitor was synthesized from acrylic acid (AA) and 2-acryloyl-2-methyl propane sulfonic acid (AMPS). The scale inhibition and dispersion properties of the copolymer were determined. The effects of monomer ratio, reaction temperature and molecular weight modifier on the scale inhibition performance of the copolymer were investigated. Keywords: sulfonic acid, copolymer, scale […]

09Sep 2019

This article describes the commonly used experimental methods for assessing the biodegradability of polyacrylic acid polymers. It is recommended to use the carbon dioxide (PCD), oxygen consumption (COD) and infrared spectroscopy images of biodegradation to comprehensively analyze the biodegradability of polyacrylic acid polymers. The volume of the bioreactor is 2L, the concentration of the tested […]

23Aug 2019

2-Hydroxyphosphonoacetic acid is a good scale inhibitor. Its appearance is a dark brown liquid with a molecular formula of C2H5O6P and a relative molecular mass of 156.03. The preparation method generally has the following three methods. Method One 16.3 parts (0.11 mol/L) 50% aqueous solution of dihydroxyacetic acid (hydrated glyoxylic acid) and 8.2 parts (0.1 […]

30Jul 2019

Through the static scale inhibition test, we studied the scale inhibition performance of PBTC and HEDP on calcium carbonate scale under low-temperature conditions (2°C-15°C). The results show that the scale inhibition performance of PBTC and HEDP on calcium carbonate scale is good at 2°C-15°C. The initial calcium ion + alkalinity has a great influence on […]

27Jun 2019

The full name of DBNPA is 2-2-dibromo-3-nitriloproion amide. It is a broad-spectrum and efficient industrial fungicide. DBNPA is used to prevent bacteria and algae from growing in papermaking, industrial circulating cooling water, mechanical lubricants, pulp, wood, paint, and plywood. 2-2-Dibromo-3-Nitrilopropionamide (DBNPA) is currently popular at home and abroad. Organic bromine fungicides. Sterilization mechanism of DBNPA […]

26Jun 2019

1. The Introduction of Reverse Osmosis Chemicals The reverse osmosis chemical, IRASD-200 is a highly effective scale inhibitor developed for reverse osmosis (RO) systems. During the water treatment, dirt and iron scale are formed on the reverse osmosis membrane. They can degrade the performance of the water treatment system. Contaminants and deposits that accumulate on […]