4A molecular sieve into the water how to deal with

After a lot of 4A molecular sieve is flooded, several cycles of regeneration must be carried out to remove the water in the 4A molecular sieve, which has the function of adsorption.

The usual practice is to close the main valve of the tower, just switch adsorption between the two molecular sieves, and use the unfed molecular sieve after the air to regenerate the inlet molecular sieve, but when the influent molecular sieve is turned to operation, this will enter the 4A molecular sieve with the water influent behind. In this way, both molecular sieves have water, and then regenerate with each other, and with adsorption regeneration, the water content is reduced, and both have adsorption conditions.

After a lot of molecular sieve is flooded, the above method is used to regenerate, but the two molecular sieve have a lot of water, both are regenerated, and both lose the adsorption effect. The reason is: after a lot of molecular sieve water intake, moisture and 4A molecular sieve effect, water from free water into molecular sieve crystal water, even if the regeneration temperature is 200 degrees can not remove crystal water, must get the manufacturer 400 degrees back to the furnace to restore the adsorption function of molecular sieve.

4A molecular sieve because it contains metal ions with a low electricity price and a large ion radius and combined water, water molecules are lost one after another after heating, but the crystal skeleton structure remains unchanged, forming many cavities of the same size, and the cavity has many micropores of the same diameter are connected, these tiny holes have a uniform diameter, can adsorb molecules smaller than the diameter of the pore to the inside of the hole, and squeeze out molecules larger than the pore, so that molecules with different shapes and diameters, molecules with different degrees, and molecules with different boiling points, Molecules with different saturation degrees are separated, that is, they have the effect of "screening" molecules, so they are called molecular sieves. At present, molecular sieve is widely used in metallurgy, chemical industry, electronics, petrochemical, natural gas and other industries.