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Quantum dot purification waste liquid recycling method

A technology of waste liquid recovery and quantum dots, which is applied in the direction of chemical instruments and methods, separation methods, liquid separation, etc., can solve the problems of high recovery cost and cumbersome and complicated recycling methods, so as to reduce the cost of recycling and make the recycling process simple Efficient, volatility-enhancing effect

Active Publication Date: 2020-11-20
南通昇纳光学技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the embodiments of the present application is to provide a method for recycling waste liquid from quantum dot purification, so as to improve the problem that "the current method of recycling waste liquid from quantum dot purification is relatively cumbersome and complicated, and will cause high recycling costs"

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Embodiment Construction

[0028] The technical solution in the present application embodiment will be described below in conjunction with the drawings in the present application embodiment.

[0029] For the recovery of the quantum dot purified waste generated, the most commonly used way is to use the recovered azeotropic distillation, extractive distillation and membrane separation of the waste liquid were extracted embodiment alkanes and alcohols. Alkane and an alcohol and then the subsequent purification of recombinant applied. This approach is more cumbersome and complex, and result in higher cost recovery.

[0030] In view of the above problems, the present inventors through research and exploration, the following examples are presented to solve the above problems.

[0031] See figure 1 The present application embodiment provides a method for purifying waste recycling quantum dot, the method comprising: a step S101- step S103.

[0032] Step S101: obtaining purified effluent quantum dots; wherein the qu...

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Abstract

The invention provides a quantum dot purification waste liquid recycling method. The method comprises the following steps: obtaining quantum dot purification waste liquid; wherein the quantum dot purification waste liquid comprises alkane and alcohol; distilling the quantum dot purification waste liquid to obtain a mixed solution of alkane and alcohol; and putting quantum dots to be purified intothe mixed solution for purification. In the embodiment of the invention, the quantum dot purification waste liquid is distilled, so that azeotrope formed by alkane and alcohol in the distillation process can be distilled out together, and then the mixed solution of alkane and alcohol can be directly used for subsequent purification of quantum dots. Compared with the prior art that alkane and alcohol are separated out respectively, the mixed solution of alkane and alcohol can be directly separated out together, and the mixed solution of alkane and alcohol is used for subsequent purification ofquantum dots. By means of the mode, firstly, the recycling process is optimized, the recycling process is simpler and more efficient, secondly, the recycling cost is reduced, and thirdly, the mode ismore environmentally friendly.

Description

Technical field [0001] Technical Field This application relates to the preparation of quantum dots, particularly, it relates to purification of waste recycling method A quantum dot. Background technique [0002] At present, for the purification of the quantum dots will produce a lot of waste, such as the use of quantum dots reprecipitation purification method, the waste will contain a non-coordinating solvent used in purification of alkanes, alcohols, and a quantum dot, such as used for the synthesis ODE (octadecene, octadecene), a small amount of unreacted high boiling fully and not fully precipitated precursor quantum dots. And since the effluent used in alkanes, alcohols, therefore, the waste can be recycled. The most commonly used way is to use recycled azeotropic distillation, extractive distillation and membrane separation of the waste liquid were extracted embodiment alkanes and alcohols. Alkane and an alcohol and then the subsequent purification of recombinant applied. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/00B01D17/022C09K11/00C09K11/08
CPCB01D3/00B01D17/0202C09K11/08C09K11/00
Inventor 俞静伟储彬彬刘世霞吴志强
Owner 南通昇纳光学技术有限公司
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