Lanlang ® CA002D
Polystyrenic Macroporous, Strong Acid Cation Resin, Hydrogen form, Catalyst,
Macroporous strong acid cation exchange resin
Used for MTBE and TAME production
Application
MTBE Production
TAME Production
Guard Bed
ADVANTAGES
Highly Crosslinked
Basic Features:
Polymer Structure Macroporous polystyrene crosslinked with divinylbenzene
Appearance Tan, spherical beads
Functional Group Sulphonic acid
Ionic form as shipped H+
Typical Physical and Chemical Characteristics:
NO. | ITEM | SPEC |
1 | Total exchange capacity (eq/g) | ≥4.8 |
2 | Moisture retention (%) | 45-55 |
3 | Particle size range (%) | 0.45-1.25 mm≥95 |
4 | Whole uncracked beads after attrition (%) | ≥96 |
5 | Shipping weight (g/ml) | 0.78-0.88 |
6 | Specific gravity (g/ml) | 1.23-1.28 |
7 | Effective size (mm) | 0.4 - 0.6 |
8 | Uniformity coefficient | <1.7 |
9 | Specific surface area (m2/g) | 40-50 |
10 | Average pore size (A) | 200-300 |
PRESSURE DROP
The pressure drop across a bed of ion exchange resin depends on the particle size distribution, bed depth, and voids volume of the exchange material, as well as on the flow rate and viscosity of the influent solution. Factors affecting any of these parameters— such as the presence of particulate matter filtered out by the bed, abnormal compressibility of the resin, or the incomplete classification of the bed—will have an adverse effect, and result in an increased head loss. Depending on the quality of the influent water, the application and the design of the plant, service flow rates may vary from 10 to 40 BV/h.
BACKWASH
During up-flow backwash, the resin bed should be expanded in volume between 50 and 70% for at least 10 to 15 minutes. This operation will free particulate matter, clear the bed of bubbles and voids, and reclassify the resin particles ensuring minimum resistance to flow. When first putting into service, approximately 30 minutes of expansion is usually sufficient to properly classify the bed. It is important to note that bed expansion increases with flow rate and decreases with influent fluid temperature.
