High-efficiency oil fume adsorption molecular sieve and preparation method

Abstract

The invention discloses a high-efficiency oil fume adsorption molecular sieve and a preparation method. The molecular sieve is composed of a ceramic fiber carrier and a filler filling the ceramic fiber carrier; the filler is prepared from, by weight, 2-4 parts of diatomaceous earth, 0.5-1.2 parts of attapulgite, 1.3-1.8 parts of kaolin, 0.5-1.2 parts of 13x molecular sieve raw powder and 4.2-6 parts of silica sol. The preparation method comprises the steps that the ceramic fiber carrier is immersed with an alkali solution, washed with water and dried to prepare a honeycomb mesh-shaped base body; the diatomaceous earth, the attapulgite, the kaolin and the 13x molecular sieve raw powder are mixed, ground into powder, sieved and uniformly mixed with a silica sol aqueous solution to obtain slurry; the surface of the honeycomb mesh-shaped base body is submerged by the slurry for soaking, and a honeycomb carrier to which the slurry is attached is obtained after soaking; the honeycomb carrierto which the slurry is attached is dried and calcined to obtain the high-efficiency oil fume adsorption molecular sieve. The high-efficiency oil fume adsorption molecular sieve has the advantages ofbeing low in specific gravity, small in gas resistance, capable of achieving a good adsorption effect on various oil fumes, unlikely to be blocked and recyclable.

Description

technical field [0001] The invention belongs to the technical field of molecular sieves, and in particular relates to a high-efficiency oil fume adsorption molecular sieve and a preparation method thereof. Background technique [0002] There is a kind of natural aluminosilicate in nature, they have sieve molecules, adsorption, ion exchange and catalysis. This natural substance is called zeolite, and the synthetic zeolite is also called molecular sieve. Molecular sieves can be used as solid adsorbents in the chemical industry, and can also be used for drying, purification, separation and recovery of gases or liquids, or as cracking catalysts in the petroleum refining industry. [0003] At present, there are many kinds of molecular sieve adsorbents in the industry. These molecular sieve products can be applied to the adsorption of various gas components according to their respective lattice structures and pore systems, and have certain treatment effects. However, when these ...

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Problems solved by technology

However, when these molecular sieve adsorbents are used for the adsorption of oil fume mixed gas, especially the oil fume in the catering industry, the purification effect is not ideal, and the internal pores are easily blocked by oil fume, and will soon fail; at the same time, the specific gravity of this type of molecular sieve Relatively large, the total weight of the device will be heavy after filling, which will easily make the air duct unstable, and is not suitable for the lightweight requirements of the flue pipe system

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