Anti-oxidation nylon 6 slice polymerization production device and method

A production device and polymerization device technology, applied in the field of nylon 6 chip preparation, can solve the problems of nylon 6 chip oxidation, high temperature, and easy mixing of oxygen

Pending Publication Date: 2018-09-25
LIAOCHENG LUXI CHEM ENG DESIGN
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Problems solved by technology

The problems existing in the existing process or technology are: one is that the caprolactam ingredients, polymerization, packaging and other processes are easily mixed with oxygen; the other is that the dissolved oxygen in the extraction water is too high; The tower pressure is too high, and the fift

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  • Anti-oxidation nylon 6 slice polymerization production device and method
  • Anti-oxidation nylon 6 slice polymerization production device and method

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[0065] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0066] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0067] The present invention will be further described below in conjunction with accompanying drawing

[0068] ...

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Abstract

The invention relates to an anti-oxidation nylon 6 slice polymerization production device and method, and belongs to the technical field of the nylon 6 slice preparation. The anti-oxidation nylon 6 slice polymerization production device comprises an oxygen-isolating distribution device, a tower-sealing polymerization device, an extraction device, a slice processing device, a pressure-control drying device, a packaging device, a desalted water deoxidizing device, and an MVR triple effect evaporating device. The oxygen-isolating distribution device is connected with the tower-sealing polymerization device. The tower-sealing polymerization device is connected with the slice processing device. The slice processing device is connected with the extraction device. The extraction device is connected with the pressure-control drying device. The pressure-control drying device is connected with the packaging device. The tower-sealing polymerization device comprises a tower-sealing compression front polymerization device and a tower-sealing decompression rear polymerization device. A material outlet of the tower-sealing decompression rear polymerization device is connected with a material inlet of the extraction device. The extraction device is connected with the MVR triple effect evaporating device. The desalted water deoxidizing device is respectively connected with the extraction deviceand the tower-sealing compression front polymerization device. The whole process adopts an anti-oxidation design, and the guarantee is provided for producing a high-quality nylon 6 product.

Description

technical field [0001] The invention belongs to the technical field of nylon 6 slice preparation, and in particular relates to an anti-oxidation nylon 6 slice polymerization production device and method. Background technique [0002] At present, the production process of domestic nylon 6 is generally fed with molten caprolactam, titanium dioxide and benzoic acid, and the product is obtained through pre-polymerization, post-polymerization, pelletizing, extraction and drying. The problems existing in the existing process or technology are: one is that the caprolactam ingredients, polymerization, packaging and other processes are easily mixed with oxygen; the other is that the dissolved oxygen in the extraction water is too high; The tower pressure is too high, and the fifth is that the nitrogen and oxygen content in the pneumatic conveying process is too high. The above five links are likely to cause oxidation of nylon 6 slices, resulting in product quality problems. At prese...

Claims

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Application Information

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IPC IPC(8): C08G69/16
CPCC08G69/16
Inventor 袁甫荣肖光张文杰杨莉张敏刘尚生李洋赵青
Owner LIAOCHENG LUXI CHEM ENG DESIGN
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