Alcohol Dehydration in Distillation Tower/Desiccant/Adsorbent/Hollow glass molecular sieve

Short Description:

Molecular sieve 3A, also known as molecular sieve KA, with an aperture of about 3 angstroms, can be used for drying of gases and liquids as well as the dehydration of hydrocarbons. It’ s also widely used for the complete drying of petrol，cracked gases, ethylene, propylene and natural gases.

The working principle of molecular sieves is mainly related to the pore size of molecular sieves, which are 0.3nm/0.4nm/0.5nm respectively. They can adsorb gas molecules whose molecular diameter is smaller than the pore size. The larger the size of the pore size, the greater the adsorption capacity. The pore size is different, and the things that are filtered and separated are also different. In simple terms, 3a molecular sieve can only adsorb molecules below 0.3nm, 4a molecular sieve, the adsorbed molecules must also be less than 0.4nm, and 5a molecular sieve is the same. When used as a desiccant, a molecular sieve can absorb up to 22% of its own weight in moisture.

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Zeolite molecular sieves have a unique regular crystal structure, each of which has a pore structure of a certain size and shape, and has a large specific surface area. Most zeolite molecular sieves have strong acid centers on the surface, and there is a strong Coulomb field in the crystal pores for polarization. These characteristics make it an excellent catalyst. Heterogeneous catalytic reactions are carried out on solid catalysts, and the catalytic activity is related to the size of the crystal pores of the catalyst. When a zeolite molecular sieve is used as a catalyst or a catalyst carrier, the progress of the catalytic reaction is controlled by the pore size of the zeolite molecular sieve. The size and shape of the crystal pores and pores can play a selective role in the catalytic reaction. Under general reaction conditions, zeolite molecular sieves play a leading role in the reaction direction and exhibit shape-selective catalytic performance. This performance makes zeolite molecular sieves a new catalytic material with strong vitality.

Technical Data

Item	Unit	Technical data
Shape		Sphere		Extrudate
Dia	mm	1.7-2.5	3-5	1/16”	1/8”
Granularity	％	≥96	≥96	≥98	≥98
Bulk density	g/ml	≥0.60	≥0.60	≥0.60	≥0.60
Abrasion	％	≤0.20	≤0.20	≤0.20	≤0.25
Crushing strength	N	≥40	≥60	≥40	≥70
Static H₂O adsorption	％	≥20	≥20	≥20	≥20