Methyl alcohol filter for methyl aldehyde production

Abstract

The invention relates to a methyl alcohol filter for methyl aldehyde production. The methyl alcohol filter comprises a shell with a hollow inner cavity. The upper end of the shell is open, a sealing cover is arranged in the open position of the upper end of the shell and is provided with a gas outlet, and a gas inlet is arranged on the lower portion of the shell. A sewage outlet is arranged at the bottom of the shell. A first annular magnet, an activated carbon filtering and adsorbing layer, a filter cotton layer and a second annular magnet are sequentially arranged in the hollow inner cavity from top to bottom. The first annular magnet is spaced from the activated carbon filtering and adsorbing layer by a preset distance, and the second annular magnet is spaced from the filter cotton layer by a preset distance. When methyl alcohol is led into the filter from the gas inlet and discharged from the gas outlet, sulfide, other impurities and iron in the methyl alcohol can be removed, and therefore the methyl alcohol quality can be improved in the methyl aldehyde production process, the cleanliness of a silver catalyst can be better protected, and the service life of the silver catalyst can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of formaldehyde production, and in particular relates to a methanol filter for formaldehyde production. Background technique [0002] Formaldehyde is a colorless gas with a strong pungent smell, easily soluble in water, alcohol and ether, formaldehyde is gaseous at room temperature, usually in the form of aqueous solution, formaldehyde is an important organic raw material, mainly used in synthetic. With the development of industry, formaldehyde is used more and more widely as a raw material, such as synthetic fibers, leather industry, medicine, dyes, etc. Formalin has bactericidal and antiseptic capabilities, and can soak biological specimens. Its dilute solution (0.1-0.5%) can be used for soaking and disinfecting seeds in agriculture. [0003] Catalytic oxidation is commonly used in industry to produce formaldehyde from methanol. Formaldehyde is produced by catalytic oxidation of methanol in industry. The...

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Problems solved by technology

[0003] Catalytic oxidation is commonly used in industry to produce formaldehyde from methanol. Formaldehyde is produced by catalytic oxidation of methanol in industry. Therefore, the purity of methanol is directly related to the quality of the produced product. Methanol produced by natural gas and coal chemical industry contains trace impurities , these impurities are difficult to detect, especially crude alcohol contains more impurities, therefore, methanol needs to be pretreated to make the purity of methanol higher, thereby improving the production quality of formaldehyde, but currently there is no A Better Methanol Filtration System

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