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Water washing system, water washing method and application of solvent-process regenerated cellulose membrane

A technology of regenerated cellulose film and cellulose film, applied in cleaning methods and utensils, cleaning methods using liquids, cleaning methods using tools, etc., can solve the problems of low washing efficiency, large water consumption, high energy consumption, etc., and achieve The effect of reducing washing energy consumption, reducing usage, and increasing operating speed

Active Publication Date: 2019-06-28
山东中科恒联生物基材料有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the gradual enrichment of low-concentration aqueous solutions is achieved, the washing efficiency is low and the water consumption is large
In order to improve the washing efficiency, a washing temperature of 80-93°C is usually used, resulting in higher energy consumption

Method used

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  • Water washing system, water washing method and application of solvent-process regenerated cellulose membrane

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] like figure 1 As shown, a water washing system for solvent-based regenerated cellulose membranes includes several washing tanks 4 connected in sequence. Adjacent washing tanks 4 are connected by overflow structures, and the overflow directions between the washing tanks are the same. A cellulose film conveying device is arranged inside, and the conveying direction of the cellulose film is opposite to the overflow direction between the washing tanks; the outlet of each washing tank 4 is equipped with a scraper 2 and a spraying device.

[0033] The overflow structure can be an overflow weir or an overflow pipe 6. When the overflow structure is an overflow weir, the overflow weir is set at the set height of the side wall of the washing tank 4. When the liquid level in the washing tank When the set height is reached, clear water flows into t...

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Abstract

The invention discloses a water-washing system for solvent-based regenerated cellulose membranes, a washing method and application. The water-washing system includes several water-washing tanks connected in sequence. Adjacent water-washing tanks are connected through an overflow structure. The overflow between the water-washing tanks is The flow directions are the same, and a cellulose film conveying device is installed in the water washing tank. The conveying direction of the cellulose film is opposite to the overflow direction between the water washing tanks; a scraper and a spray device are installed at the outlet of at least one water washing tank. (1) Pour clean water into the last water washing tank so that the water overflows forward from the last water washing tank to the first water washing tank; (2) Put the prepared cellulose membrane into the first water washing tank After washing, it is scraped and sprayed at the outlet of the first washing tank and then enters the second washing tank for washing; (3) The cellulose membrane completes the entire washing according to the method in step (2) process. This method can effectively reduce the amount of water and greatly improve the washing efficiency.

Description

technical field [0001] The invention relates to a water washing system, a water washing method and an application of a solvent method regenerated cellulose membrane. Background technique [0002] Under the current severe environmental protection situation, although the application of regenerated cellulose film is becoming more and more widespread, the traditional viscose process used in industrial production is difficult to develop because of the lengthy and complicated production process, high consumption and heavy pollution. The new process of using direct solvent to prepare regenerated cellulose membrane has the advantages of cleanness and high efficiency, and is worthy of industrial development. 1-allyl-3-methylimidazolium chloride (AmimCl) ionic liquid is one of the most effective direct solvents for cellulose. After dissolving cellulose with AmimCl solvent, it is prepared by coagulation, film formation, water washing, and plasticization. Cellulose film. Due to the hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B3/08B08B3/10B08B3/12B08B1/02B08B3/02B08B13/00B08B1/20
CPCB08B3/022B08B3/08B08B3/10B08B3/123B08B13/00B08B2203/007B08B1/20B08B1/165
Inventor 李瑞丰张军贾锋伟余坚张晓煜武进邱金江张金明张东光崔增亮王德坤王新
Owner 山东中科恒联生物基材料有限公司
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