Strong Acid Styrene Series Cation Exchange Resin 001*7
1. Product Introduction
"Piao Yichun" brand 001*7 is a polystyrene cation exchange resin with sulfonic acid groups, existing in the form of spherical beads. It features high exchange capacity and high operating capacity, low pressure drop, and good physical and chemical stability. It is conventionally supplied in sodium or hydrogen form. 001*7 can be used in all water softening processes, dealkalization, deionization, pure and ultrapure water preparation, food industry, pharmaceutical and chemical treatment applications, etc. The 001*7 resin series includes: 001*7 general-purpose product, 001*7FC suitable for twin-bed, multi-chamber bed and floating bed systems; 001*7MB suitable for mixed bed systems; and 001*7FD which is food-grade resin.
2. Physicochemical Performance Indicators
| Item |
Specification |
| Appearance |
Golden yellow spherical beads |
| Polymer Structure |
Styrene-DVB |
| Type |
Gel strong acid |
| Functional Group |
R-(SO₃⁻)M⁺ |
| Ionic Form |
Na⁺ / H⁺ |
| Moisture Content % |
45-50 (Na⁺) / 51-56 (H⁺) |
| Volume Capacity mmol/ml |
≥1.9 (Na⁺) / ≥1.75 (H⁺) |
| Bulk Density g/ml |
0.77-0.87 (Na⁺) / 0.73-0.83 (H⁺) |
| True Density g/ml |
1.25-1.29 (Na⁺) / 1.17-1.22 (H⁺) |
| Particle Size (0.315-1.25mm) % |
≥95 |
| Effective Size mm |
0.40-0.60 |
| Uniformity Coefficient |
≤1.60 |
| Swelling Rate (Na⁺-H⁺) |
≤10 |
| Sphere Rate after Attrition |
≥90 |
3. Operating Indicators
| Item |
Specification |
| pH Range |
0-14 |
| Operating Temperature ℃ |
≤120 (Na⁺ form) / ≤100 (H⁺ form) |
| Bed Height m |
1.0-3.0 |
| Regenerant |
NaCl and HCl |
| Regeneration Level g/mol |
100-120 (Na⁺) / 70-80 (H⁺) |
| Regenerant Concentration % |
5-8 (Na⁺) / 3-4 (H⁺) |
| Regenerant Flow Rate m/h |
4-5 (Na⁺) / 3-5 (H⁺) |
| Regenerant Temperature ℃ |
Standard temperature |
| Regenerant Contact Time min |
>30 |
| Exchange Flow Rate m/h |
4-5 (Na⁺) / 3-5 (H⁺), exchange time 20-30 min |
| Rinse Flow Rate m/h |
15-20 |
| Rinse Time min |
10-20 |
| Operating Flow Rate m/h |
15-30 |
| Operating Temperature ℃ |
≤120 (Na⁺ form) / ≤100 (H⁺ form) |
4. Product Application
001*7 is a high-purity, premium-grade granular gel polystyrene sulfonate cation exchange resin. It has high particle integrity, good chemical and physical stability, and very low extractables. This resin can be used for treating food, drinking water, and water used in food processing. It is also suitable for the pharmaceutical and chemical industries.
5. Resin Pretreatment
Ion exchange resins are industrial products; organic or inorganic impurities are inevitably introduced during production and transportation. These impurities will be gradually released during use, affecting effluent quality. Therefore, new resin must be pretreated before use. The specific method is as follows:
- After loading the resin into the exchanger, backwash the resin layer with clean water at an expansion rate of 50-100%, until the effluent is clear, odorless, and free of fine resin particles.
- Pass about 2 resin bed volumes of 4-5% hydrochloric acid solution through the resin layer at a flow rate of 2 m/h. After complete introduction, soak for 4-8 hours, drain the acid solution, and rinse with clean water until the effluent is near neutral, with a rinse flow rate of 10-20 m/h.
- Pass 2 resin bed volumes of 2-5% alkali solution through the resin layer and soak using the same method as for the hydrochloric acid solution. Drain the alkali solution and rinse with clean water until the effluent is near neutral, using the same rinse flow rate.
- Repeating the acid and alkali treatment 2-3 times yields even better results. For pretreated resin, the regenerant dosage should be doubled during the first operation to ensure thorough regeneration.
