Tuesday, May 31, 2011

Alkalinity Builder Chemical

Alkalinity or AT is the ability of a base to neutralize acids to the stoichiometric point of carbonate or bicarbonate, or the measurement of the buffering capacity of water. Measuring alkalinity in water systems is imperative because it determines system’s ability to neutralize acidic contamination from rainfall or wastewater, given the increased occurrence of pollution. Alkalinity does not refer to pH level per se, but rather refers to the ability of water to resist pH change. Most common buffering compounds are bicarbonates (HCO3-) and carbonates (CO32-), but occasionally, hydroxides (OH-), borates, silicates, phosphates, ammonium, sulfides, and organic ligands are also used. In the natural environment, carbonate alkalinity makes up the majority of the total alkalinity level because of the presence of carbon dioxide in the atmosphere and the abundance of carbonate rocks. The unit mEq/L is usually given as its standard measurement, although when dealing with water systems such as steam boilers, the unit ppm or parts-per-million is usually given.

It goes to say that alkalinity for boiler waters is required to increase the pH level. In general, boiler water pH should be greater than 10.5 to ensure that the polymer chemical can work effectively to remove impurities made by scaling. In the long run, scaling impurities decrease your boiler heat
transfer efficiency which in turn will increase your energy costs. Also, if scaling is excessive, early tube replacement may be required. In high boiler pressure systems, if the total alkalinity exceeds the 3:1 ratio, silica plating may occur. Low boiler water pH may lead to excessive corrosion rates and premature boiler tube failure.

When handling alkaline products, extreme care should be exercised. Protective gear including masks, gloves, and laboratory goggles should be worn before handling the product. Alkalinity builders can cause one of the worst types of chemical burns.


Boiler Chemical 1425

BC 1425 is a concentrated alkalinity builder in liquid form for boiler treatment. Product provides maximum alkalinity adjustment per pound. It is recommended for use in any water system requiring additional alkalinity to assure proper reaction, and will not give off any residual carbon dioxide to the steam produced. All ingredients are FDA-approved for steam boilers in contact with food.

Thursday, May 12, 2011

Condensate Treatment Chemical


Amines are used to increase the condensate pH for your boiler water and steam boiler.  A low condensate pH will result in excessive condensate pipe corrosion and steam leaks.  This condition may require premature condensate pipe replacement.

High make-up water and/or low feedwater temperatures will lead to lower condensate pH.  In general, the condensate pH should be maintained between 7.8 and 8.2.

The 3 most common amines for Steam Treatment are Cyclohexylamine, Morpholine, and Diethylhydroxylamine (DEAE).

    * Cyclohexylamine is used for extensive condensate pipe system and has the highest impact on pH.
 
    * Morpholine is excellent for steam short condensate pipe runs and has the lowest impact on condensate pH.

    * Diethylhydroxylamine is a general purpose amine for use in low to medium pressure boilers.

It is common in industry to order a blend of all 3 Amines, although not required.  These are referred to "Tri-Blend" Amines.

Steam Treatment 1688

ST1688 is a concentrated blend of three neutralizing amines Cyclohexylamine, Morpholine, and Diethylhydroxylamine (DEAE).

Wednesday, May 11, 2011

Oxygen Scavenger Chemical

Oxygen scavengers are designed to remove dissolved oxygen in boiler water and steam boiler systems.  Failure to properly remove dissolved oxygen will result in irreversible corrosion damage to the boiler tubes and may result in premature tube replacement. Proper chemical injection is in the center of the deaerator storage section or feedwater tank.

Boiler Chemical 1537

BC 1537 is a highly concentrated neutral pH sulfite solution designed to react with oxygen present in the boiler feedwater. By acting as an oxygen scavenger, the products are used to control corrosion and pitting caused by the presence of this dissolved gas. Boiler Chemical 1537-F can be used in FDA regulated facilities but is not USDA approved.