CONDENSAMINE
CONDENSAMINE is a unique blend of liquid neutralizing amine, designed for inhibiting corrosion in condensate lines.
USAGE
CONDENSAMINE is highly effective in neutralizing the corrosive effects of carbon dioxide in boiler condensate systems.
TECHNICAL REVIEW
Carbon dioxide enters the condensate system in two ways :-
(a) As a dissolved gas.
(b) As a decomposition product of soluble carbonates and bicarbonates , carbon dioxide vaporizes from
the boiler and forms carbonic acid when it condenses with the condensate lowering the pH, iron and
copper will enter into solution more rapidly as pH decreases causing an increase in corrosion rate.
Within the condensate system and deposition of metallic oxides in the boiler CONDENSAMINE is
quickly volatilised in the boiler and travels with the stream. In this way, it is able to neutralize carbon
dioxide at all points through out the system, Condensamine effectively protects condensate areas
against grooving or channeling and prevents the frequent failure at threaded points caused by low pH attack.
ADVANTAGES
1. Soluble in all proportions in water.
2. Protects vapour and condensate areas from low pH corrosion.
3. Protects copper and copper base alloys as well as iron and steel.
4. mild cleaning action, increasing heating efficiencies.
5. Requires minimum of testing and control.
6. Can be fed alone or with other treatment chemicals.
7. Does not break down to ammonia which is harmful to copper.
8. Boiling point over 93°C / 204°F'
FEED REQUIREMENTS
The amount of CONDENSAMINE required depends upon the total carbon dioxide entering the system as free carbon dioxide, bicarbonates and carbonates as well as the percentage of condensate returned. Theoretically, it requires eight kilos of CONDENSAMINE to neutralize one kilo of carbon dioxide to a pH of 8.3.
METHOD OF FEEDING
CONDENSAMINE may be added separately or with other water treatment chemicals to the deaerator storage section , feed water tank, feed water line or directly to the boiler. Continuous feed is the most desirable method although satisfactory results have been obtained by slug feed. Feed solutions can be made with any water supply , temperature should be below 40°C / 104°F. Feed equipment should be made of steel or alloys or iron or plastic. Brass or galvanized parts should not be used in feed systems because of the high pH of the concentrated solution.
CONTROL
CONDENSAMINE is controlled by testing return condensate for pH and maintaining this pH between 8.0 to 9.0, a pH meter, colourimetric pH test or titration is used to control feed rate.
DOSAGE
CONDENSAMINE dosage cannot be calculated as closely as dosages for other treatment chemicals. Table 1 below provides a starting dosage, but the ultimate dosage should be based on the pH actually developed in the condensate.
In system starting to use CONDENSAMINE for the first time the feed rate should be started at 25% of the external dosage. The dosage can be increased in 25% increments at 3-4 week intervals. This technique will avoid sweeping excessive amounts of old corrosion products dislodged by CONDENSAMINE back into the boiler.
TABLE 1 --- STARTING DOSE
CONDENSAMINE needed to neutralize total alkalinity in feed water (litres condensamine = .0013 * total alkalinity )
Total alkalinity of feed water condensamine needed As ppm CaCo3 ltrs / 1000ltrs
0 - 5 .007 ltrs
5 - 10 .013 ltrs
10 - 15 .020 ltrs
15 - 20 .026 ltrs
20 - 25 .032 ltrs
25 - 30 .039 ltrs
Use of TABLE 1 for starting dosage
1. Determine ppm of total alkalinity in the feed water
2. Find range in Table 1 that brackets measured value.
3. Read amount of condensamine required to completely neutralize the alkalinity in he right hand column.
CAUTION
CONDENSAMINE should be handled with normal precautionary measures such as face shield, rubber gloves etc. Avoid contact with skin and inhalation of vapours. Storage should be in a cool dry place, closed container and away from open flame
FREIGHT CLASSIFICATION
Boiler cleaning, preserving, scale-prventing, or scale removing compound liquid.
