Molecular Sieve Dryer Design

Jalon molecular sieve for desiccant air dryer 4a and standard activated alumina provide the ideal combination of strength and adsorption capacity to produce reliable dry air that is reliable without causing equipment damage.

Molecular sieve dryer design.

Molecular sieve adsorbents are available in the following forms 3a k na zeolite a with a nominal pore opening of 3 å 0 3 nm 4a as synthesized na zeolite a with a nominal pore opening of 4 å 0 4 nm 5a ca na zeolite a with a nominal pore opening of 5 å 0 5 nm 13x na zeolite x with a nominal pore opening of 10 å 1 0 nm properties of basf molecular. Herold contributing writer amsterdam the netherlands. A molecular sieve is a material with pores very small holes of uniform size. This information is primarily concerned with the sizing of dryer units.

Another feature of molecular sieve adsorbents is their ability to separate gases or liquids by molecular size or polarity. The operating temperature and partial pressure of an impurity along with the type of molecular sieve 3a 4a 5a 13x defines the adsorption capacity of that impurity. A molecular sieve works by adsorbing gas or liquid molecules that are smaller than the effective diameter of its pores while excluding those molecules that are larger than the openings. Molecular sieves are in the family of desiccants also known as adsorbents used for hydrocarbon drying are used to remove dissolved water from hydrocarbon gases and liquids.

Mole sieve switching valve de hydration switching valve gas de hy switching valve among others. A number of parameters influence the design and operation of a molecular sieve unit. Our molecular sieve for desiccant air dryer is a low dust. Mokhatab gas processing consultant halifax nova scotia canada.

As it ages molecular sieve releases particulates that can be very damaging to downstream processes and instrumentation. The targeted valve installation is a molecular sieve dryer valve also known as. A cyclical adsorption desorption system to transfer contaminants or non desired gas molecules from one stream to another. The pore or cage openings are the same size as many molecules e g in the case of hydrocarbon paraffins straight chained molecules can fit into the pores and be adsorbed while the branched chain molecules cannot enter the pores and pass through the molecular sieve.

Table 2 is a compilation of some suggested design guidelines extracted from commercial information on desiccant dryers. In addition to these design guidelines there are additional considerations in liquid dryer design. A practical example of the function of molecular sieves is to dry ethanol. As a brief overview on molecular sieve dryer.