陶氏丙烯酸强弱碱阴树脂IRA70RF

发布时间:2017-7-7 00:00:00 来源:http://www.jiacaihg.com/supply/10.html

AMBERLITE™ IRA70RF

Industrial Grade Weak Base Anion Exchanger

Introduction

    AMBERLITE IRA70RF resin is a weak base anion exchange resin with a gel type acrylic matrix. The acrylic polymer matrix is extremely flexible providing far superior physical stability and organic fouling resistance in comparison with conventional polystyrene based resins. Less breakdown and less fouling yields longer life in the application. AMBERLITE IRA70RF resin is a gel-type resin giving it higher capacity and longer run lengths than macroporous-type resins. Compared to other acrylic weak base anion resins, AMBERLITE IRA70RF resin has an excellent rinse performance. Its excellent organic reversibility makes it ideally suited to demineralise surface waters containing high amounts of organic matter. The particle size distribution of AMBERLITE IRA70RF resin has been specifically selected to give optimum performance in packed and floating bed applications.

Properties


Physical Form

Translucent white spherical beads

Matrix

Crosslinked acrylic gel structure

Functional group

Tertiary amine

Ionic form as shipped

Free Base (FB)

Total exchange capacity

≥ 1.40 eq/L (FB form)

Moisture holding capacity

56 to 64 % (FB form)

Shipping weight

655 g/L

Particle Size

 

Uniformity coefficient

≤ 1.60

Harmonic mean size

0.700 to 0.950 mm    < 0.355 mm    0.5 % max

Reversible swelling

FB  →  Cl-  ≤ 10 %


Suggested Operating Conditions


Water Treatment

 

Maximum operating temperature

40 °C

Minimum bed depth

700 mm

Service flow rate

5 to 40 BV*/h

Regeneration

 

Regenerant

NaOH

Level

130 % of ionic load

Concentration

2 to 4 %

Minimum contact time

30 minutes

Slow rinse

2 BV at regeneration flow rate

Fast rinse

3 to 10 BV at service flow rate

Operating capacity

    The actual operating capacity of AMBERLITE IRA70RF resin depends on a number of factors:

    1.composition of water (particularly CO2 and SO4 content),

    2.specific flow rate

    3.ionic loa

Regeneration

    Optimum regeneration dosage is a quantity of caustic soda equivalent to 120 to 140 % of the operating capacity.

Organic matter

    The aliphatic structure of AMBERLITE IRA70RF resin gives it slightly less affinity for organic acids found in surface waters than polystyrene weak base resins. This weaker affinity combined with the flexible acrylic polymer structure allows for more complete elution of the organics from the resin. Therefore, AMBERLITE IRA70RF resin offers a large reversible capacity for the removal of organic matter.

Limits of use

    AMBERLITE IRA70RF resin is suitable for industrial uses. For all other specific applications such as pharmaceutical, food processing or potable water applications, it is recommended that all potential users seek advice from Rohm and Haas in order to determine the best resin choice and optimum operating conditions.

Hydraulic Characteristics

    Figure 1 shows the bed expansion of AMBERLITE IRA70RF resin as a function of backwash flow rate and water temperature. Figure 2 shows the pressure drop data for AMBERLITE IRA70RF resins as a function of service flow rate and water temperature.





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