4a zeolite at 110 ° C ambient temperature drying Can be activated

4A, can adsorb water, methanol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, ethylene, propylene and other low molecular weight compounds as pore molecular sieve 4A, air separate unit molecular sieve does not activated molecular sieves adsorb any molecular diameter greater than 4A (including propane), a high selectivity for water adsorption properties any other molecule, is one of the varieties of industrial zeolite largest amount. 110 ° C for water evaporation is a large space, but it is impossible to zeolite pore water rush out. Therefore, generally zeochem molecular sieves used in a laboratory muffle furnace dehydrated drying can be activated at a temperature of 350 ° C, dried 8 hours at atmospheric pressure (if the vacuum pump can be dried for 5 hours at 150 ° C in the case of the exhaust). The activated molecular sieve in air cooled to 200 ° C (about 2 minutes) and immediately stored in a desiccator. If the conditions applied during the cooling and preservation of dry nitrogen to prevent moisture in the air is absorbed again. Old post contaminants using molecular sieve, activated not only when the temperature of 450 ° C up to, but also to pass into the steam or inert gas (nitrogen) to replace sieve out the other substances.

activated zeolite Activated Zeolite is a natural zeolite

Activated Zeolite is a natural zeolite is made through a variety of special activation process, activated zeolite powder the adsorption performance stronger than the natural zeolite, ion exchange performance is also better, not only to remove the water turbidity, color, odor, and harmful heavy metals in water, such as: chromium, cadmium nickel, zinc, mercury, iron ions and organic: phenol, BHC, DDT, three nitrogen, ammonia nitrogen, phosphate ions activated alumina and other substances with adsorption exchange interaction, but also conducive to all kinds of micro-pollutants removal and flooding fluid does not contain toxic, harmful substances, removal of iron, fluorine effect is more significant. So the ideal filter activated zeolite is a new industrial water supply, wastewater treatment and water filtration.

activated molecular sieves Structure

Zeolitic molecular sieves known as synthetic zeolites or molecular sieves having a chemical composition formula is:
[M2 (Ⅰ) M (Ⅱ)] O.Al2O3.nSiO2. MH2O
Formula M2 (Ⅰ) and M (Ⅱ) respectively monovalent and divalent metal ions, most of the sodium and calcium, n is called silica to alumina ratio of the zeolite, sodium silicate and silicon mainly from silica, aluminum comes from sodium aluminum and Al (HO) 3, etc., which react with aqueous sodium hydroxide colloid was prepared and dried after a zeolite, activated alumina typically n = 2 ~ 10, m = 0 ~ 9.
Characteristics of the zeolite molecular sieve having a role, it has a uniform pore size, such as 3A0,4A0,5A0,10A0 pores. There 4A0 4A0 pore zeolite adsorption of methane, ethane, and not more than three carbon adsorption of n-alkanes. It has been widely used for activated alumina drying agent  gas adsorption separation, drying, and gas and liquid separation are different alkanes.
Thus proteoglycan aggregates composed of coiled turns, forming a sieve-like microporous structure, called molecular sieves. Zeolite molecular sieve allowing only its micro-pores is less than the material through its pores large macromolecules, the bacteria has a barrier function.

Specific applications of activated sieves

Activate sieves is one of the main material of volatile organic compounds in the physical adsorption method used in processing. But if not completely degrade pollutants, easy to produce secondary pollution.regeneration of molecular sieves in order to solve the problem of light pollution, activated sieves humans began to think of ways to use technology to replace traditional catalytic degradation purification technology, activated sieves Photocatalytic treatment technologies emerged. This method is based dioxide as a catalyst, activating sieves method using photocatalytic oxidative degradation of volatile organic compounds in the air, molecular sieve grace no other chemical additives, mild reaction conditions, and the final product is usually only carbon dioxide and water, will not be activated sieves produce secondary pollution.

The practical application of zeolite sieves molecular activation

Zeolite sieves molecular activation is emptying device for PSA oxygen concentrator,zeolite sieves molecular activation including two adsorption towers, zeolite sieves molecular activation is two is arranged in the adsorption tower below theelectromagnetic valve, 3a zeolite molecular sieves vent duct activated zeolite powder, zeolite sieves molecules to activate the vent valve and a vacuum pump; the vent duct is connected to one end ofthe two electromagnetic valve are respectively used in pipeline, zeolite sieves molecular activation two the electromagnetic valve is connected to the other end ofthe pipe is respectively for the adsorption tower; zeolite sieves molecular activation of the vent pipe are connected by pipeline are respectively connected to the vent valveend and one end of the zeolite powder. synthetic zeolite powders the other end of the other end ofthe activation of sieves vent valve and the vacuum pump is connected with a muffler.Activated zeolite powder by the technical proposal, the utility model by adsorption venttower in the add a vent valve, the device switches vent pre vent valve open, zeolitesieves molecular activation by the adsorption tower pressure difference inside and outside the internal exhaust gas vent part, zeolite sieves molecular activation of remaining gas use the vacuum pump; reduce shortens working period of vacuum pumps, vacuum pump load, prolong the service life of vacuum pump.

The practical significance of zeolite molecular sieves

zeolite molecular sieves has high adsorption capacity of zeolite molecular sieve, strong stability and other adsorbents no merit, the molecular sieve to obtain a wide range of applications. Zeolite molecular sieve in the field of biological macromolecules, zeolite molecular sieve are common activated zeolite powder pre column zeolite molecular sieve by adjusting temperature, zeolite molecular sieve can precisely control the size of a titanium silicate material, activated alumina manufactured aluminophosphate molecular sieve. Zeolite molecular sieve some crystal material has a large number of uniform pores,zeolite molecular sieves molecular activated alumina desiccent size than the small hole can pass through, and large molecules cannot pass through, so you can play the separation of different molecular interaction, activated alumina, activated zeolite powder this class of materials known asmolecular sieve. In fact,activated molecular sieves they found that a substance called activated alumina can be used as a good molecular sieve. When the temperature rises, the activated aluminadesiccent will gradually dehydrate, activated alumina desiccent micropore sizedecreases. Zeolite molecular sieve by using this method, you can fine tune the pore size range.

The practical application of zeolite molecular sieves activation

Zeolite sieves molecular activation is amino three acetate and sodium carbonate,zeolite sieves molecular activation is trimeric sodium phosphate and sodium sulfate,zeolite molecular sieves synthesis of sieves zeolite molecular properties for the regeneration of of in the production of high concentrated laundry powder agglomeration forming added more surface active agent, regeneration of molecular sieves washing and good fluidityare very meaningful. zeolite molecular sieves Through the experiment, the synthesis of zeolite powder liquid carrying amount of more than 30%, molecular sieves regeneration of of in theproduction of washing powder is added during the synthesis of zeolite molecular sieves, design can increase the material flow,zeolite molecular sieves the design of molecular sieves preparedto adjust viscosity, appearance of the product desiccant molecular sieve liquidity and anti caking ability a good product. Zeolite sieves molecular activation: through the experiment on the same formula containing different additives, zeolite molecular sieves change agentcompares the detergency, activated molecular sieves found that the polymer decontamination effect with 40% molecules of STPP, activated zeolite powder 20% 20% of the screen, 4% equivalent to STPP,zeolite molecular sieves zeolite molecularsieves molecular activation molecules in the non phosphorus formula in 20% to join the 10% sieve in carbonate sodium and 4.5% of the polymer, can get the detergencyof ideal products.