Device and method for preparing high-purity nano ZnO through hydrogen cycle reduction

A hydrogen and nanotechnology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of long nano-zinc oxide process, high cost and energy consumption, and high emissions, so as to improve uniformity, purity and output, reduce consumption, Good oxidizing effect

Active Publication Date: 2022-05-06
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the preparation process of nano zinc oxide generally has long process, large loss, high cost and energy consumption and CO 2 Disadvantages such as high emissions

Method used

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  • Device and method for preparing high-purity nano ZnO through hydrogen cycle reduction
  • Device and method for preparing high-purity nano ZnO through hydrogen cycle reduction
  • Device and method for preparing high-purity nano ZnO through hydrogen cycle reduction

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Embodiment Construction

[0045] The specific content of the present invention will be further explained in detail below in conjunction with the examples, but it is not intended to limit the present invention.

[0046] Such as figure 2 , image 3 As shown, a device for preparing high-purity nano-ZnO through hydrogen circulation reduction includes a reduction furnace 5, a solid-liquid separation and vaporization furnace 9, a waste heat recovery device 15, and an oxidation chamber 18;

[0047] The top of the reduction furnace 5 is connected with a feed bin 1 through a pipeline, the bottom of the feed bin 1 is connected with a discharge device 2, and the bottom of the discharge device 2 is connected with the reduction furnace 5, so that the zinc oxide calcine can be continuously and quantitatively Slowly enter the reduction furnace 5, so as to fully contact with hydrogen; the bottom plate of the reduction furnace 5 is the first porous plate 4, the lower part of the first porous plate 4 is provided with ...

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Abstract

The invention discloses a device and a method for preparing high-purity nano ZnO through hydrogen circulation reduction. The device comprises a reduction furnace, a solid-liquid separation and vaporization furnace, a waste heat recoverer and an oxidation bin, wherein a bottom plate of the reduction furnace is a first porous plate; a heater is arranged on the outer side of the solid-liquid separation and vaporization furnace; the reduction furnace is connected with a feeding bin; a hydrogen bin is arranged at the lower part of the first perforated plate; the solid-liquid separation and vaporization furnace comprises an internal rotary drum which is connected with the reduction furnace, and the side wall of the internal rotary drum is a second perforated plate; an interlayer is formed between the inner wall of the solid-liquid separation and vaporization furnace and the second perforated plate; a waste heat recovery bin connected with the internal rotary drum is arranged in the waste heat recoverer; the oxidation bin is respectively connected with the interlayer, the nano zinc oxide condensation collector and the water vapor condenser; the water vapor condenser is connected with a condensed water reheating pipeline connected with the waste heat recoverer, a hydrogen recovery pipeline connected with the hydrogen bin and a hydrogen water vapor conveying pipeline connected with the reduction furnace; and the waste heat recoverer is connected with a water vapor regeneration and recovery pipeline. The method is short in process and low in energy consumption, and the prepared nano ZnO is high in purity.

Description

technical field [0001] The invention relates to the preparation of nano-ZnO, in particular to a device and method for preparing high-purity nano-ZnO through hydrogen circulation reduction. Background technique [0002] The size of nano-zinc oxide is between atomic clusters and macroscopic particles. It has special properties that many macroscopic materials do not have, such as the volume effect, surface effect, macroscopic quantum tunneling effect and Kubo effect of nanomaterials, making it suitable for light absorption, sensitivity and Catalysis and other functional properties have shown attractive application prospects. [0003] At present, the methods for producing nano-ZnO are mainly divided into physical methods and chemical methods. Most physical methods use high-energy particle beams to bombard or directly heat high-purity ZnO targets, and the bombarded particles are deposited on low-temperature substrates to obtain nano-ZnO. The physical method is characterized by c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02
CPCC01G9/02C01P2006/80
Inventor 孙院军李金阳张茜茜曾毅丁向东孙博宇柏小丹孙军
Owner XI AN JIAOTONG UNIV
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