Boiler water treatment
The most prevalent problems encountered in the use of boilers are scale deposition and corrosion. Chemical feed water treatment is needed to keep the boiler running efficiently because untreated water will inevitably lead to overheating, pressure drops, tube failures, and loss of efficiency. Jurby WaterTech International produces and supplies JurbySoft® oxygen scavengers, scale and corrosion inhibitors, and cleaners for the treatment of boiler water and condensate systems. JurbySoft® products are developed to comply with existing systems, allowing the achievement of optimal efficiency. Specialists of the company will select or consult with you to help decide on the best chemical treatment for your boiler.
The company experts provide chemical water treatment for:
- steam boilers;
- hot water boilers;
- district heating systems;
- condensate return lines;
- flue gas condensers.
As a part of JurbySoft® products for boiler water treatment, the company offers coagulants and flocculants to enhance overall performance of water treatment programme.
SCALE AND CORROSION INHIBITORS
One of the major problems that affect the operation of industrial boilers is the accumulation of salt deposits on the system’s internal lining. Corrosion is another problem that, if left untreated, can hinder effectiveness, lead to costly maintenance and repairs, and may even lead to boiler breakdown. The JurbySoft® boiler water treatment programme provides effective protection against scale formation and corrosion. Jurby WaterTech International’s JurbySoft® programme improves a boiler system’s reliability and efficiency.
Main advantages of a custom-formulated programme for the treatment of boiler water:
- binds hardness and iron ions in feed water;
- neutralises carbonic gas and adjusts alkalinity to levels of least corrosion;
- promotes the creation of a protective magnetite film on the surfaces of steel and copper alloys;
- ensures free P-alkalinity formation (NаОН) and reduces the risk of caustic embrittlement;
- stabilises sludge and does not allow it to accumulate and adhere in places with bad circulation;
- prevents foaming and carry-over of boiler water, even at the boiler’s maximum productivity level.
JurbySoft® scale and corrosion inhibitors for boiler water treatment
| Product name | Description | Application / advantages |
| JurbySoft 1 | Product for alkalinity and pH correction | increases water alkalinity and pH; neutralises acidic wastewater; reduces corrosion-causing tendencies; stabilises pH in circulating systems |
| JurbySoft 3 | Scale and corrosion inhibitor for autoclaves | resistant to chlorination; approved for use in the food industry; stable over a wide temperature range; excellent corrosion and scale inhibitor for medium to high water hardness (Langelier index up to a value of +3.0); compatible with chlorine and bromine-based biocides |
| JurbySoft 6 | Scale and corrosion inhibitor for low-to-medium pressure boiler water treatment (where soft make-up water is used) | approved for use in the food industry; supports the solubility of salts at a maximum level; prevents deposits; acts as a dispersant; promotes the formation of magnetite films |
| JurbySoft 6H | Scale and corrosion inhibitor for boiler water treatment (where medium-alkalinity deaerated make-up water is used) | binds oxygen quickly and at low concentrations; neutralises carbonic acid and adjusts the alkalinity in boiler water; protects condensate lines performing as neutralising amines; supports the solubility of salts at a maximum level; prevents deposits; acts as a dispersant; promotes the formation of magnetite films |
| JurbySoft 8 | Scale and corrosion inhibitor for boiler water treatment (where demineralized and reverse osmosis make-up water is used) | supports the solubility of salts at a maximum level; prevents deposits; acts as dispersant; promotes the formation of magnetite films |
| JurbySoft 9 | Multi-purpose scale and corrosion inhibitor for heating systems and hot-water boilers (for hard water) | neutralises carbonic acid; acts as an oxygen scavenger; controls the formation of mineral scale; acts as a dispersant; promotes the formation of magnetite films |
| JurbySoft 9T | Multi-purpose scale and corrosion inhibitor for heating systems and hot-water boilers (for soft water) | neutralises carbonic acid; acts as an oxygen scavenger; promotes the formation of magnetite films |
| JurbySoft 12 | Multi-purpose scale and corrosion inhibitor | approved for use in the food industry; binds dissolved oxygen at a level of up to 0.5 mg/l; supports the solubility of salts at a maximum level; prevents deposits; acts as a dispersant; promotes the formation of magnetite films |
| JurbySoft 14 | Multi-purpose scale and corrosion inhibitor with an increased quantity of sulphites for boiler water treatment | approved for use in the food industry; binds dissolved oxygen at a level of up to a value 1.0 mg/l; supports the solubility of salts at a maximum level; acts as a dispersant; promotes the formation of magnetite films |
| JurbySoft 14a | Multi-purpose scale and corrosion inhibitor for boiler water treatment (where demineralized make-up water is used) | approved for use in the food industry; binds residual dissolved oxygen at a level of up to a value 0.5 mg/l; neutralises carbonic acid and regulates alkalinity; supports the solubility of salts at a maximum level; prevents deposits |
| JurbySoft 99-1 | Scale inhibitor based on polymers for low, medium and high pressure boilers | high-performance scale inhibitor; acts as a dispersant; promotes the gradual removal of deposits; stable over a wide temperature range |
OXYGEN SCAVENGERS
Boiler corrosion occurs when dissolved oxygen in the feed water reacts with metal in the boiler. Even small concentrations of dissolved oxygen can cause serious damage and the failure of boiler tubes, piping or economisers. This can be prevented by using oxygen scavengers to remove or reduce the level of oxygen in the entire water system. Jurby WaterTech International’s JurbySoft® products can be used for oxygen scavenging in all types of boilers and heating systems.
Main advantages of JurbySoft® oxygen scavengers:
- provide fast binding of dissolved oxygen;
- do not influence steam quality;
- consist of liquid products that are safe and easy to use;
- offer simple control of dosage according sulphite residues;
- environmentally friendly, with FDA 21.173.310 approved components
JurbySoft® oxygen scavengers for boiler water treatment
| Product name | Description | Application / advantages |
| JurbySoft 24 | Oxygen scavenger for low and medium pressure boilers | approved for use in the food industry; quickly binds dissolved oxygen; promotes the formation of magnetite films; cost-effective |
| JurbySoft 24b | Oxygen scavenger for low and medium pressure boilers | approved for use in the food industry; quickly binds dissolved oxygen; promotes the formation of magnetite films; alkaline product |
| JurbySoft 26 | Organic oxygen scavenger based on polyamines for medium and high pressure boilers | fast binding of dissolved oxygen in water; promotes the formation of a passive magnetite film on metal surfaces; does not contribute to total dissolved solids (TDS) in boiler water; thermally stable and can be used in boilers with a pressure of up to 140 atm; does not corrode copper or copper alloys; neutralises carbonic acid and protects condensate loops |
CHEMICALS FOR CONDENSATE RETURN LINES
Condensate is hot condensed steam, made up of very pure high-temperature water that is ideal as boiler feed water. However, this water is very corrosive – for example, when it cools, carbon dioxide (CO2) easily dissolves in it. At favourable conditions carbonic, acid forms, which can eat through steel. The company Jurby WaterTech International offers treatment products for steam condensates that protect the condensate system from acid or CO2 corrosion, dissolved oxygen attacks, and erosion, allowing the proportion of condensate returned to be increased.
Main advantages of JurbySoft® condensate line inhibitors:
- easy to use;
- do not increase water salinity;
- do not form any deposits in the boiler;
- are non-corrosive to copper and copper alloys;
- have components that are approved as boiler additives under FDA 21.173.310.
JurbySoft® chemicals for condensate return lines
| Product name | Description | Application / advantages |
| JurbySoft 32 | Carbonic acid corrosion inhibitor for short condensate return lines | protects against carbonic acid corrosion; does not increase salinity; promotes the formation of a protective film; does not corrode copper or copper alloys |
| JurbySoft 33 | Inhibited acid concentrate for pH correction, corrosion and scale inhibitor | used for water pH correction; usable in circulation water for condensate economizers; is a good corrosion and scale inhibitor; accelerates elimination of contaminants of different nature; prevents agglomeration of ash particles |
| JurbySoft 34 | Carbonic acid corrosion inhibitor for long condensate return lines | protects against carbonic acid corrosion; does not increase salinity; promotes the formation of a protective film; does not corrode copper or copper alloys |
| JurbySoft 36 | Carbonic acid corrosion inhibitor for condensate return lines | approved for use in the food industry; protects condensate return lines against corrosion; does not increase salinity; promotes the formation of a protective film; does not corrode copper or copper alloys |
| JurbySoft 40 | Acidic concentrate for pH correction, corrosion, and scale inhibitor | pH correction or water neutralization when water pH is too high; is an excellent scale and corrosion inhibitor for non-ferrous metals; accelerates elimination of contaminants of different nature; prevents agglomeration of ash particles. |
CLEANERS FOR HEAT EXCHANGERS
If the water in boilers or cooling systems is not treated correctly, the surfaces of heat exchangers will get covered in various sediments that reduce heat transfer and increase energy consumption. To restore heat transfer efficiency, the company offers a range of products to clean these surfaces. The product range is grouped according to target residues. Acidic cleaners remove carbonate or ferrous sediments, while alkaline cleaners disperse oil, materials of organic nature, and other pollutants. Alkaline cleaners are also applied for surface passivation. JurbySoft® can offer a cleaner for any case despite the typo of heat exchangers and metal alloys used.
JurbySoft® cleaners for heat exchangers
| Product name | Description | Application / advantages |
| JurbySoft DS1 | Inhibited concentrate for acid cleaning of carbon steel surfaces | efficiently cleans calcium, ferrous and mixed deposits. Inhibited to protect against aggressive acid attacks |
| JurbySoft DS2 | Inhibited concentrate for weak acid cleaning of surfaces made of stainless steel and non-ferrous metals | efficiently cleans calcium, ferrous and mixed deposits; protects against aggressive acid attacks; eco-friendly |
| JurbySoft DS2 plus | Inhibited concentrate for weak acid cleaning of
surfaces made of stainless steel and non-ferrous metals |
efficiently cleans calcium, ferrous and mixed deposits; protects against aggressive acid attacks; eco-friendly |
| JurbySoft DG1 | Alkaline concentrate for the passivation of surfaces and the washout of organics, oils and grease | excellent surface passivator; forms a protective film on all types of metal; efficiently removes oil products, grease and organic matter |
| JurbySoft DG2 | Alkaline concentrate with enhanced de-emulsifying properties for the washout of oils and grease | perfectly washes petroleum products, grease and oil; simultaneously passivates surfaces |
| JurbySoft DGS2 | Alkaline concentrate for cleaning and passivating equipment surfaces | perfectly passivates surfaces; forms a protective film on all types of metal; washes out grease, fats and rust |
Used in the following case studies
Management of boilers and condensate lines corrosion by dosing JurbySoft products into the main feedwater line
