A pre-separation method and diamond-based separation device for fluorine-containing waste

A separation device and pre-separation technology, which can be used in electrical liquid separation, chemical instruments and methods, laboratory containers, etc., and can solve the problems of similar properties of by-products, difficult separation, and corrosion of analytical equipment.

Active Publication Date: 2021-03-23
SHANGHAI ZHENGSHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the 3-5 theoretical plates of the separation effect of the ordinary 10m rectification tower are used to calculate the corresponding separation degree, the height of the rectification tower reaches the level of 100 million meters, which is impossible to achieve
[0005] In addition, this kind of by-product waste contains fluorine gas, hydrogen fluoride and unstable acyl fluoride, which has strong permeability and high chemical activity, which seriously corrodes the analysis equipment and has high requirements for the material of the analysis equipment.
[0006] In summary, there are at least two difficulties in recycling the by-products of the fluorination reaction: 1. The by-products have similar properties and low polarity, making separation extremely difficult; 2. The by-products severely corrode the analytical equipment

Method used

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  • A pre-separation method and diamond-based separation device for fluorine-containing waste
  • A pre-separation method and diamond-based separation device for fluorine-containing waste
  • A pre-separation method and diamond-based separation device for fluorine-containing waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Example 1 Diamond-based separation device

[0099] Such as Figure 1-6 As shown, the diamond-based separation device provided in this embodiment includes a separation chip, and the separation chip has an upper plate 1 and a lower plate 2 bonded to each other.

[0100] The lower sheet 2 is based on photosensitive glass-ceramics, and the side of the photosensitive glass-ceramic substrate 25 close to the upper sheet 1 is provided with a first liquid inlet channel 3, a main channel 4, and a micropump connecting the first liquid inlet channel 3 and the main channel 4 The cavity 5, the first electrode slot 6, the second electrode slot 8, the second liquid inlet channel 7 between the first electrode slot 6 and the second electrode slot 8, the first electrode and the second electrode are respectively formed in the second In the first electrode groove 6 and the second electrode groove 8, the first electrode groove 6, the second electrode groove 8 and the second liquid inlet cha...

Embodiment 2

[0113] Example 2 Preparation method of diamond-based separation device

[0114] The preparation method of the diamond-based separation device in this embodiment specifically includes the following steps:

[0115] 1) Prepare the next film:

[0116] 1.1) Preparation of photosensitive glass-ceramics

[0117] In parts by weight, the photosensitive glass-ceramic of the present embodiment comprises the following components: 72% SiO 2 , 6% Li 2 O, 15%Al 2 o 3 , 3% Ag 2 O, 3.5% CuO, and the rest is CeO 2 and SnO 2 . Prepared by sol-gel method.

[0118] 1.2) Preparation of microstructures on photosensitive glass-ceramics

[0119] Using a mask process, a microstructure including the first liquid inlet channel, the second liquid inlet channel, the main channel, the micropump cavity, the first electrode groove, and the second electrode groove, and the housing are opened on the photosensitive glass-ceramic substrate. cavity.

[0120] The parameters of the ultraviolet irradiatio...

Embodiment 3

[0157] Example 3 Preparation method of diamond-based separation device

[0158] The preparation method of the diamond-based separation device in this example is basically the same as that in Example 2, the difference lies in the method of preparing the helical coil in step 2.2). The preparation method of the helical coil in this example is as follows:

[0159] On the surface of the third diamond layer corresponding to the micropump cavity away from the silicon wafer, use the ion implantation process as in step 1.8) to implant boron into the third diamond layer to form boron-doped diamond in situ, and the implantation parameters can be the same as in step 1.8 ) remains the same. The single line width of boron-doped diamond is 50 μm, and the spacing is 50 μm.

[0160] Prepare a silicon dioxide insulating layer on the surface of the boron-doped diamond using the magnetron sputtering process as in step 1.3.1), and the thickness of the silicon dioxide insulating layer is 150 μm. ...

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Abstract

The invention discloses a pre-separation method of fluorine-containing waste and a diamond-based separation device. The pre-separation method of fluorine-containing waste uses a diamond-based separation device to pre-separate the fluorine-containing waste. The pre-separation method includes The steps are as follows: (1) adjust the pH value of the fluorine-containing waste to 7-8 to obtain the product to be separated; (2) add carrier liquid to the separation microchannel, and add the product to be separated to the In the separation microchannel of the separation chip, turn on the power supply, generate a potential difference between the two ends of the separation microchannel, and drive the different components in the object to be separated to move in the carrier liquid at different speeds to achieve separation; (3) Collect or further detect the substances that move to the outlet of the separation microchannel. The method for pre-separating fluorine-containing wastes of the present invention can effectively pre-separate fluorine-containing wastes with complex components into several groups of mixtures with relatively simple components.

Description

technical field [0001] The invention belongs to the technical field of material separation, and in particular relates to a pre-separation method of fluorine-containing waste and a separation device used in the method. Background technique [0002] Fluorine and fluorocarbons, due to the electronegativity of the special fluorine-carbon bond, have many special applications in the macro and micro fields. For example, perfluorinated organic compounds have stable chemical properties and can withstand many extreme conditions, and can be widely used in chemical, coating and other fields. But at the same time, due to the stable chemical properties of fluorine and fluorocarbons, and the long half-life cycle in nature, the environmental pollution problems caused by them have been widely concerned, mainly non-degradable environmental pollution. Therefore, in the preparation of perfluorinated organic compounds, the use and recycling are major issues that people are increasingly concerne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/06B01L3/00
CPCB01D17/06B01L3/502707B01L3/50273B01L3/502753B01L2200/12B01L2300/161B01L2400/0421
Inventor 王涛王箫满卫东张雪梅朱长征徐念龚闯
Owner SHANGHAI ZHENGSHI TECH CO LTD
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