Softening
Water Softening is used for the removal of calcium and magnesium ions
which are the hardness (scale) forming constituents of water.
When water is passed over an ion exchange bed in a softening process,
Ca2+ and Mg2+ ions are exchanged for the equivalent Na+ ions. The water
obtained contains only Sodium salts, which do not produce boiler scales
since they are readily soluble in water. This process is used for scale
prevention in Low and Medium Pressure Boilers.
After every service cycle the resin is backwashed with water followed
by regeneration with 5-15% of NaCl solution.
|
Tulsion®
|
T-40
|
T-42
|
T-42(MP)
|
|
|||
|
TYPE
|
Strong
Acid
|
Strong
Acid
|
Strong
Acid
|
|
MATRIX
STRUCTURE |
Polystyrene
Copolymer
|
Polystyrene
Copolymer
|
Polystyrene
Copolymer
|
|
FUNCTIONAL
GROUP |
Sulphonic
|
Sulphonic
|
Sulphonic
|
|
IONIC
FORM SUPPLIED
|
Na+
|
Na+
|
Na+
|
|
SCREEN
SIZE (U.S.MESH)
|
16- 50
|
16- 50
|
16- 50
|
|
PARTICLE
SIZE (mm) |
0.3-1.2
|
0.3-1.2
|
0.3-1.2
|
|
TOTAL
EXCHANGE
CAPACITY (Meq/ml) |
1.8
|
2.0
|
1.7
|
|
pH
RANGE
|
0-14
|
0-14
|
0-14
|
|
MOISTURE
CONTENT APRX. %
|
50
|
45
|
45
|
|
REVERSIBLE
SWELLING %
|
Na+->>H+
10
|
Na+->>H+
7
|
Na+->>H+
6
|
|
BACKWASH
(gm/lit)
SETTLED DENSITY (Ibs/cft) |
810-850
51-53 |
830-870
52-54 |
830-870
52-54 |
|
MAXIMUM
(°C)
TEMP. STABILITY (°F) |
140
280 |
140
280 |
140
280 |
| Tulsion® |
FEATURES
|
|
|
| T-40: | Gel cation exchange resin with physical and chemical properties. |
| T-42: | High capacity gel resin. Excellent physical and chemical properties. Excellent resistance to oxidation. |
| T-42(MP): | Macroporous resin. Excellent physical, chemical and osmotic properties. Higher resistance to oxidation. Useful for final polishing in lime soda softening. Used for high colouring organics like tannin. |
NOTE:
Softening of high hardness,high TDS water can also be carried out by
Sodium form of weak acid cation resin.The resin is regenerated in two
steps.First regenerate the resin in Hydrogen form by 0.7 to 4% HCl or
H2SO4 and then convert it into Sodium form by 1 to 2% NaOH solution.
Disclaimer: The data included herein are based on test information obtained by Thermax Ltd. These are believed to be reliable but do not imply any warranty or performance guarantee. We recommend that the user determine performance by testing on his own processing equipment. We assume no liability or responsibility for patent infringement resulting from the use of these products. |
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