Molecular sieve 4 A

Regeneration:

1. Dehydration: At 200-350℃ and in pressure of 0.3~0.5kg/cm3, let a dryer gas goes through the sieve bed for 3~4hours. As the temperature in outlet at 150~180℃, let the bed cool off.

2. Removal of organic components: Replace the organic components with steam, then dehydrate

Specification

Balls

             Type

4ABI

4ABII

              Size mm

2.0~3.0

4.0~6.0

Bulk density（㎏/m³）min

660

660

Crushing strength (N) min

30

70

Attrition loss（%Wt）max

0.4

0.4

Moisture adsorption % min

21

21

Methanol capacity(mg/g) min

140

140