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D201
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1. Product Introduction:
D201 is a macroporous strongly basic anion exchange resin with a polystyrene skeleton, containing -N ( CH3 ) 3 equivalent to a solid strong base. It has excellent resistance to physical abrasion and chemical penetration, as well as good silicon removal performance. Mainly used for desalination, preparation of pure and ultrapure water, and condensation purification. It can also be used for gold adsorption in cyanide ore slurry.
Corresponding foreign brands: Amberlite 200 , Lewatit Sp-210, Diaion PA308
2. Performance Indicators:
Appearance
Milky white or light gray opaque spherical beads
Strong base group capacity
≥3.7 mmol/g
Volume exchange capacity
≥1.2 mmol/ml
Moisture content
50%~60%
Wet true density
1.06~1.10 g/ml
Wet apparent density
0.65~0.73 g/ml
Particle size range
0.315~1.25 mm
Effective particle size
0.40-0.70mm
Uniformity coefficient
≤1.6
Abrasion-resistant spherical bead rate
≥90%
3. Reference Operating Conditions:
Maximum operating temperature
CL 100℃
Resin bed height
1~3 m
Operating flow rate
2~10 BV/h
Backwash flow rate
4~10 BV/h
Regeneration (desorption) flow rate
1~2 BV/h
Regenerant dosage
2 BV 3~5% HCl, 2 BV 2~4% NaOH
4. Product Applications:
Mainly used for decolorization of natural extracts and extracts in the pharmaceutical and food industries, characterized by large decolorization capacity and excellent decolorization effect.
5. Precautions:
1. Transportation and storage of the product:
Store the product in a wet state, preferably at temperatures above 0 degrees Celsius; for long-term storage, it can be sealed or immersed in 5% a brine solution above; during transportation, prevent freezing, and do not place heavy objects on the resin to avoid crushing.
2. Resin pretreatment:
Generally requires treatment with alkali -water - acid - water in one process; for strict requirements, three cycles are needed, finally treating to the required ionic form.
3. Resin loading:
Consider the resin's swelling rate during phase transition, reserve enough space to prevent overflow and ensure proper liquid level; the column diameter ratio should be within a reasonable range to avoid channeling; use wet loading or backwash to remove air bubbles inside the resin bed.
4. Before the liquid enters the resin column, it should undergo flocculation, filtration, or sand filtration to ensure no suspended solids, preventing blockage of resin pores.
5. Resin unused in the column for a long time must be cleaned and removed for storage, or kept in a salt-resistant medium with brine, maintaining the surface moisture and periodically backwashing the resin to loosen it and prevent caking and spoilage.
D201
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