sieves adsorbents supplier in chennai india

Ennore india chemicals  offers a range of molecular sieves adsorbents which are capable of reducing potentially damaging moisture levels in products and processes to a safe or acceptable level and to maintain those levels.

The sieves dry out more completely than other adsorbents and remain effective at relatively high process temperatures.  They can dry mixed streams without altering stream composition.In addition they selectively adsorb other contaminates, which demonstrates the advantages of molecular sieves as an alternative to silica gel and activated alumina.Molecular sieves purify and dry in one step and provide high product recovery and separations.Their lower investments and operating costs plus very high efficiency offers many advantages over standard adsorbents.Molecular sieves are available in the principal grades of 3A, 4A, 5A and 13X.

A molecular sieve is a material with pores (very small holes) of uniform size. These pore diameters are similar in size to small molecules, and thus large molecules cannot enter or be adsorbed, while smaller molecules can. As a mixture of molecules migrate through the stationary bed of porous, semi-solid substance referred to as a sieve (or matrix), the components of highest molecular weight (which are unable to pass into the molecular pores) leave the bed first, followed by successively smaller molecules. Some molecular sieves are used in chromatography, a separation technique that sorts molecules based on their size. Other molecular sieves are used as desiccants (some examples include activated charcoal and silica gel).

Applications

Molecular sieves are often utilized in the petroleum industry, especially for drying gas streams. For example, in the liquid natural gas (LNG) industry, the water content of the gas needs to be reduced to less than 1 ppmv to prevent blockages caused by ice.

In the laboratory, molecular sieves are used to dry solvent. "Sieves" have proven to be superior to traditional drying techniques, which often employ aggressive desiccants.

Under the term zeolites, molecular sieves are used for a wide range of catalytic applications. They catalyze isomerisation, alkylation, and epoxidation, and are used in large scale industrial processes, including hydrocracking and fluid catalytic cracking.

They are also used in the filtration of air supplies for breathing apparatus, for example those used by scuba divers and firefighters. In such applications, air is supplied by an air compressor and is passed through a cartridge filter which, depending on the application, is filled with molecular sieve and/or activated carbon, finally being used to charge breathing air tanks. Such filtration can remove particulates and compressor exhaust products from the breathing air supply.

Polyester agent additives

These molecular sieves are used to assist detergents as they can produce demineralized water through calcium ion exchange, remove and prevent the deposition of dirt. They are widely used to replace phosphorus. The 4Å molecular sieve plays a major role to replace sodium tripolyphosphate as detergent auxiliary in order to mitigate the environmental impact of the detergent. It also can be used as a soap forming agent and in toothpaste.

Harmful waste treatment

4Å molecular sieves can purify sewage of cationic species such as ammonium ions, Pb2+, Cu2+, Zn2+ and Cd2+. Due to the high selectivity for NH4+ they have been successfully applied in the field to combat eutrophication and other effects in waterways due to excessive ammonium ions. 4Å molecular sieves have also been used to remove heavy metal ions present in water due to industrial activities.

Other purposes

The metallurgical industry - separating agent, separation, extraction of brine potassium, rubidium, caesium, etc.
Petrochemical industry, catalyst, desiccant, adsorbent
Agriculture - soil conditioner;
Medicine - load silver zeolite antibacterial agent.