Features and Benefits

Reduces Bicarbonate Alkalinity, Thereby Minimizing CO2 Production:

• Decreased chemical consumption.
• Decreased condensate line corrosion.
• Lower blowdown rates.
• Reduces fuel consumption.
• Increased cycles of concentration.

Uses a Strong Base Anion Resin With a Combination of Salt/Caustic Soda Regeneration:

• Produces a higher operating capacity and a more consistent effluent quality.
• Provides some silica reduction.
• Increases feed water pH.

Product Offering

Information in this section applies directly to Cleaver-Brooks dealkalizers ranging from 10,000 to 980,000 grain capacity. Cleaver-Brooks chloride cycle dealkalizers are similar to water softeners except that, instead of cation resin, they use a strong anion resin to remove negatively charged ions from the raw water supply. Dealkalizers replace bicarbonate, sulfate, nitrate, and silica with chloride ions.

Dealkalizers require use of softened water, and are installed down stream from the water softener, and before the deaerator. Dealkalizers remove more than 90% of the bicarbonate alkalinity from the softened water supply. This effectively controls formation of carbon dioxide in the boiler, the major cause of condensate line corrosion. Dealkalization reduces the need for neutralizing chemicals by as much as 90%, and cuts fuel cost by minimizing blowdown.

Dealkalizers offer best payback when:

• Cycles of concentration in the boiler can be doubled.
• Chloride content is below 120 ppm.
• Sulfate count is below 50% of total exchangeable anions.
• Bicarbonate alkalinity is 100 ppm or more.

Dealkalizers are regenerated with salt brine and sodium hydroxide and have an operating temperature range of between 40 and 120 °F.
Optional Equipment

• ASME code tank construction.
• Water meter for automatic or semi-automatic regeneration.
• Skid mounting.
• NEMA 12 or 4 control panels.
• External corrosion protection.

Operating requirements include a continuous source of softened water at 30 to 100 psig, 40 °F to 100 °F. Electrical service, 120 Vac, 60 Hz, 5A.