201×7 Strong-Base Type I (Gel) Anion Exchange Resin
详细说明
1. Description
201×7（717）is a clear gel Type 1 strong-base anion exchanger with both high operating capacity and the ability to achieve low residual silica levels. It has a clear gel structure, showing excellent regeneration efficiency and rinse characteristics. 201×7（）has exceptional physical stability for a conventional gel-type resin which permits a long life without the development of excessive pressure drop; it also shows good kinetics of exchange, enabling very low concentration levels of both strong and weak anions to be achieved at practical flowrates
2.Typical Physical and Chemical Properties:
|
Items |
Specification |
|
Polymer Matrix Structure |
Crosslinked Polystyrene Divinylbenzene |
|
Physical Form and Appearance |
Spherical beads |
|
Functional Groups |
[-N(CH3)3OH] |
|
Ionic Form ,as shipped |
CL- |
|
Total Capacity, CL- form, wet, volumetric |
≥1.4eq/l min |
|
Moisture Retention, CL- form |
42-48% |
|
Particle Size Range |
0.3mm-1.2mm |
|
<0.3mm (max.) |
1% |
|
Uniformity Coefficient (max.) |
1.6 |
|
effective size |
0.4-0.7mm |
|
Reversible Swelling CL-→ OH –(max.) |
18-25% |
|
Shipping Weight (approx.) |
670 -730g/l |
|
Specific Gravity, moist CL- Form |
1.09 |
|
pH Range, Stability |
0 - 14 |
3.Suggested Operating Condition
|
Maximum Temperature |
OH- Form |
60 °C (140oF) max. |
|
CL- Form |
80 °C (176oF) max |
|
|
Backwash Rate |
50 to 75% Bed Expansion |
|
|
Regenerant Concentration |
2-4% NaOH |
|
|
Regenerant dosage |
NaOH |
NaOHvolume:resin volume =3:1 |
|
Regenerant Flow Rate |
2 to 4 BV/h |
|
|
Regenerant contact Time |
At least 40 minutes |
|
|
Service Flow Rate |
10-25m/h |
|
4.Applications
It is mainly used in pure water and high purity water manufacturing, extraction and decolorization of biochemical products, wastewater treatment, separation of organics, extraction of radioelements, extracting the tungsten and molybdenum in hydrometallurgy etc
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