Common Chemicals Used in Boiler Water Treatment

 Industrial boilers and steam raising plant are extensively used in the various industrial and manufacturing plant. For efficient boiler processes, water chemistry should have to be controlled effectively. Otherwise, water will carry corrosion and deposit impurities, which will further affect the smooth workability of the boiler. Boiler feed water should be a low controlled alkaline and it should content with very less dissolved Oxygen and very low presence of ions such as chlorine and Silica as it will be deposited on the turbine and effect the boiler efficiency. Different chemicals are used to remove hardness, silica and silt from boiler feed water. These boiler water treatment chemicals are of different types such as phosphonates, carboxylates/acrylic, chelating agents, sodium sulfite, hydrazine and others. Functions like corrosion inhibitor, scale inhibitor, oxygen scavenger and others are performed by these boiler water treatment chemicals. These boiler water treatment chemicals are utilized in different industries such as power, oil & gas, chemical & petrochemical and others.

Boiler water treatment chemicals' demand will grow owing to the drive factors such as increasing demand for boilers in manufacturing and commercial applications. Furthermore, increasing demand for power generation will increase the need for boiler technology, which will further push the demand growth of boiler water treatment chemicals market. Predominantly, deposit formation occurs due to the non-volatile nature of certain chemicals which may hamper the boiler water treatment chemicals market. However, degrading quality of water and increasing requirement of boiler for specific formulations will create some new opportunities for the boiler water treatment chemicals market.

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The following provides a guide on some of the more common chemicals that are used in boiler water treatment.

 Oxygen Scavengers:

Oxygen scavengers are designed specifically to reduce the amount of dissolved oxygen and oxides in the water. If you use a DO sensor and find that the amount of dissolved oxygen in your boiler water is too high, oxygen scavengers like hydrazine and sodium sulphite can effectively reduce both DO and oxides for purer water. Oxygen scavengers will typically passivate various metal surfaces as well, which helps to keep rust and other issues at bay.

 Alkalinity Builders:

 Alkalinity builders are designed specifically to raise the pH level of the water that they are placed in. For steam boilers, it’s essential that pH levels remain high in order to prevent corrosion, minimize the amount of silica plating in a high-pressure boiler, and maintain proper efficiency of the boiler. While it’s not always necessary to use an alkalinity builder if your feed water has a high alkalinity, you should consider using alkalinity builders in the event that the water in your boiler becomes too acidic.

 Amines:

Amines are neutralizing chemicals that are able to keep the condensate pipe on a boiler from corroding. Condensate water from a steam boiler can be highly corrosive to piping, which can damage your boiler and cause you to make expensive repairs to fix the issue. The three types of neutralizing amines that you can obtain for boiler water treatment purposes include morpholine, diethylaminoethano, and cyclohexylamine. While it’s possible to purchase these neutralizing amines as a singular component, the majority of solutions will be blended with all three.

 Anti-Scaling Agents:

Anti-scaling agents are used to enhance the dispersive properties of any conditioning products that are being used in your boiler water. An anti-scaling agent is typically comprised of a blend of polymers and phosphates. These anti-scaling agents are available as either natural or synthetic chemicals. The most common natural polymers include tannins and lignosulphonates, while the synthetic polymers available to you include polystyrene sulphonates and maleic acrylate copolymer.

 External and Internal Treatment of Boiler Water:

 The two types of treatment for boiler water include external treatment and internal treatment. With external treatment, the impurities are reduced or removed entirely from the water once the water has been taken outside of the boiler. If the impurities in the feed water have reached very high levels that could be damaging to the boiler, it’s recommended that you use the external treatment method. When the feed water has been removed, it will be purified and de-aerated. It can also be pre-treated through evaporation, which produces somewhat pure vapor that can be condensed and used during the treatment process. This treatment method is able to provide softening to the water, reduce silica and alkalinity, remove suspended matter, and reduce oxygen. However, the process can be time-consuming and is oftentimes unnecessary.

The report provides a detailed overview of the industry including both qualitative and quantitative information. It provides an overview and forecast of the boiler water treatment chemicals market based on various segments. It also provides market size and forecast estimates from the year 2018 to 2027 with respect to five major regions, namely; North America, Europe, Asia-Pacific (APAC), Middle East and Africa (MEA) and South America. The boiler water treatment chemicals market by each region is later sub-segmented by respective countries and segments. The report covers the analysis and forecast of 18 countries globally along with the current trend and opportunities prevailing in the region. 

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