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Device, system and process for treating PA6 polymerization extraction water

A treatment device and water extraction technology, applied in natural water treatment, water treatment parameter control, heating water/sewage treatment, etc. Limit and other issues, to reduce the number of cleaning and replacement, prolong the continuous running time, improve product quality

Pending Publication Date: 2022-04-19
DALIAN HISCIEN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) The melt filter of the recycled material line cannot be put into use, which seriously limits the use of the product
[0008] It can be seen that the above problems are the pain points of the industry, and there is no better solution

Method used

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  • Device, system and process for treating PA6 polymerization extraction water
  • Device, system and process for treating PA6 polymerization extraction water

Examples

Experimental program
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Effect test

Embodiment 1

[0042] In an existing production facility of an enterprise, the extracted water is directly fed into the extracted water storage tank from the extracted water intermediate tank without other treatment, and then reused after being evaporated and concentrated.

[0043] The situation of the above-mentioned implementation factories before the transformation is as follows:

[0044] Inorganic ions in the extracted water are continuously enriched during the recycling process. After the enrichment reaches a certain concentration, the normal production is seriously affected, resulting in a very short operating period of the melt filter in the recycled material polymerization line, sometimes even 2 to 3 days, which has seriously affected normal operation of production. If the current common treatment method "ion exchange resin device" is used to treat monomer water, the initial investment of the equipment is about 3 million yuan, most of which is the cost of ion exchange resin. The ion ...

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PUM

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Abstract

The invention discloses a treatment device, system and process for PA6 polymerization extraction water. The extraction water treatment device comprises a structural unit used for removing or partially removing silicon elements in a PA6 polymerization extraction water process water body. The extraction water treatment device comprises an acidic gas supply unit and / or an acidic liquid supply unit, and a reaction tank for mixing extraction water and acidic liquid / acidic gas. And the reaction tank is also provided with a water pH monitoring unit and an extracted water filter. By utilizing the extraction water treatment device, system and process, the technical problems existing in the prior art are effectively solved, the normal operation of the system can be effectively ensured under the condition that the operation cost is greatly reduced, the product quality is improved, the system is clean and environment-friendly, and the industrial pain point is solved.

Description

technical field [0001] The invention relates to a nylon 6 production device and process, in particular to a PA6 polymerization extraction water treatment device, system and process. Background technique [0002] When the nylon 6 polymerization plant produces semi-dull / full-dull slices, its monomer water system will suffer from TiO in the polymerization process. 2 The addition of inorganic ions is introduced. The existence of inorganic ions will have a negative impact on the operation status of the production line and product quality, especially under the condition of full reuse of monomer water concentrate, the enrichment of inorganic ions in the system will have a more serious impact. [0003] The current common treatment method in the industry is to use "ion exchange resin device" to treat monomer water, but this method has large investment (about 3 million to 5 million yuan), high operating cost (high cost of replacing resin every year), and produces a large amount of A...

Claims

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Application Information

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IPC IPC(8): C02F9/10B01D11/02C02F1/66C02F1/04C02F1/42C02F103/38C02F101/10
CPCC02F9/00B01D11/02C02F2209/06C02F1/66C02F1/001C02F1/04C02F1/42C02F2303/22C02F2101/10C02F2103/38
Inventor 赵利张久林王艇赵明秀
Owner DALIAN HISCIEN ENG
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