Adsorption type separation device for p-xylene

Abstract

The invention discloses an adsorption type separation device for p-xylene, and belongs to the field of chemical equipment. The device comprises a tank body, a vertical partition plate is fixedly mounted in the tank body, a plurality of upright first conical rings and inverted second conical rings are arranged in the tank body, a plurality of supporting legs are fixedly mounted on the outer wall of the tank body, vertical channels are formed in the two sides of the top surface of the tank body respectively, the channels are communicated with corresponding sliding grooves, the bottom faces of the channels are rotationally connected with the lower ends of second screw rods correspondingly, the second screw rods are provided with threaded sleeves matched with the second screw rods in a threaded mode, and ejector rods are fixedly installed on the top faces of the sliding grooves correspondingly. According to the device, materials can sequentially pass through the first conical rings and the second conical rings on all the layers, adsorbents on the first conical rings and the second conical rings on all the layers can adsorb the materials, desorption agents can desorb the materials, multiple times of adsorption separation of the materials can be achieved, the materials can be discharged in batches, in addition, the adsorption and the separation of p-xylene are simultaneously carried out, so that the material treatment time of the device can be shortened.

Description

technical field [0001] The invention belongs to the field of chemical equipment, in particular to a p-xylene adsorption separation device. Background technique [0002] P-xylene is a colorless transparent liquid with aromatic odor, specific gravity 0.861, melting point 13.2°C, boiling point 138.5°C, flash point 25°C, miscible with ethanol, ether, acetone and other organic solvents, flammable, slightly more toxic than ethanol, Its vapor and air can form an explosive mixture, which is used to produce terephthalic acid, and then produce polyester resins such as ethylene terephthalate and butylene glycol ester. Polyester resin is used to produce polyester fibers, polyester sheets, and polyester resins. The raw material of the ester hollow container, when producing p-xylene, often uses the adsorption separation method to absorb p-xylene. After the adsorption, it needs to use a desorbent for desorption. Therefore, after the material is discharged, it is necessary to add a desorben...

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Problems solved by technology

[0002] P-xylene is a colorless transparent liquid with aromatic odor, specific gravity 0.861, melting point 13.2°C, boiling point 138.5°C, flash point 25°C, miscible with ethanol, ether, acetone and other organic solvents, flammable, slightly more toxic than ethanol, Its vapor and air can form an explosive mixture, which is used to produce terephthalic acid, and then produce polyester resins such as ethylene terephthalate and butylene glycol ester. Polyester resin is used to produce polyester fibers, polyester sheets, and polyester resins. The raw material of the ester hollow container, when producing p-xylene, often uses the adsorption separation method to absorb p-xylene. After the adsorption, it needs to use a desorbent for desorption. Therefore, after the material is discharged, it is necessary to add a desorbent for desorption. The adsorption separation very inefficient way

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