Device for removing light components in maleic anhydride production

Abstract

The utility model discloses a device for removing light components in maleic anhydride production. The device comprises a reaction tank, an air inlet is formed in one side of the peripheral lower endof the reaction tank; an air outlet is formed in the top surface of the reaction tank; a negative pressure pump communicated with the air outlet is fixedly mounted on the top surface of the reaction tank; a first through hole is formed in the center of the top face of the reaction tank, a coaxial long pipe is fixedly installed in the first through hole, a first motor is fixedly installed on the top face of the long pipe, a second through hole is formed in the top face of the long pipe, a rotating shaft is installed in the second through hole through a bearing, and the upper end of the rotatingshaft is fixedly connected with the lower end of a first motor rotating shaft. The device is simple in structure, and skillful in design, is provided with a filter screen, is capable of filtering outpolymerized acrylic polymers; the filter screen can be continuously cleaned, the filter screen is prevented from being blocked, the acrylic polymer can be collected and prevented from falling to thebottom of the reaction tank or a tower tray, so that the corrosion of the acrylic polymer to the bottom of the reaction tank and the tower tray is reduced, and the collected acrylic polymer can be continuously discharged.

Description

technical field [0001] The invention belongs to the field of light component removal devices, in particular to a light component removal device in the production of maleic anhydride. Background technique [0002] In the existing maleic anhydride production device, during the refining process of crude maleic anhydride, the concentration of acrylic acid at the top of the light removal tower increases, and acrylic acid is prone to polymerization when the concentration exceeds a certain level, which in turn will cause blockage of trays and pipelines, resulting in the device being forced to shut down for processing , resulting in limited operating rate of the device, reduced production capacity, and the labor intensity of operators cleaning up blocked pipelines is too high to meet actual needs. Therefore, we invented a light component removal device for maleic anhydride production. Contents of the invention [0003] The invention provides a light component removal device in the...

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Problems solved by technology

[0002] In the existing maleic anhydride production device, during the refining process of crude maleic anhydride, the concentration of acrylic acid at the top of the light removal tower increases, and acrylic acid is prone to polymerization when the concentration exceeds a certain level, which in turn will cause blockage of trays and pipelines, resulting in the device being forced to shut down for processing , resulting in limited operating rate of the device, reduced production capacity, and high labor intensity for cleaning blocked pipeline operators, which cannot meet actual needs. Therefore, we invented a light component removal device for maleic anhydride production.

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