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Three-dimensional carbon aeration electrode for efficiently producing hydrogen peroxide

A hydrogen peroxide and carbon electrode technology, applied in the field of environmental engineering, can solve the problems of complex reactor configuration, complex cathode preparation, and low oxygen utilization rate, and achieve strong hydraulic shock resistance, good mass transfer effect, and oxygen utilization high rate effect

Inactive Publication Date: 2019-11-05
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve most of the current electrocatalytic production of H 2 o 2 The preparation of the cathode is complicated, the cost is high, the mass transfer efficiency is low, the oxygen utilization rate is low, the stability of the electrode is poor, and the reactor configuration is complex, and a three-dimensional carbon aeration electrode for high-efficiency hydrogen peroxide production is provided.

Method used

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  • Three-dimensional carbon aeration electrode for efficiently producing hydrogen peroxide
  • Three-dimensional carbon aeration electrode for efficiently producing hydrogen peroxide
  • Three-dimensional carbon aeration electrode for efficiently producing hydrogen peroxide

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specific Embodiment approach 1

[0018] Specific Embodiment 1: In this embodiment, a three-dimensional carbon aeration electrode includes a three-dimensional carbon electrode 1 and several flexible tubes 3. The three-dimensional carbon electrode 1 is used as a cathode, and the three-dimensional carbon electrode 1 has a three-dimensional channel. One end of the tube 3 extends into the interior of the three-dimensional carbon electrode 1 and communicates with the three-dimensional channel.

specific Embodiment approach 2

[0019] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the three-dimensional carbon electrode 1 has a carbon cathode with a three-dimensional structure macroscopically, and the three-dimensional carbon electrode 1 is a graphite felt electrode, a carbon felt electrode, or an activated carbon fiber electrode. , Mesh glassy carbon electrode, graphite sponge electrode, carbon airgel electrode or foam carbon electrode.

[0020] Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the three-dimensional carbon aeration electrode also includes a vent pipe 2 , and the vent pipe 2 communicates with the other ends of several hoses 3 .

[0022] Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a three-dimensional carbon aeration electrode for efficiently producing hydrogen peroxide, and relates to the technical field of environmental engineering. Aiming to solve the problems that currently, most cathodes for producing the H2O2 through electrocatalysis are complicated in preparation, the cost is high, the mass transfer efficiency is low, the oxygen utilization rateis low, the electrode stability is poor, and the structure of a reactor is complicated, the method comprises the steps that the three-dimensional carbon aeration electrode is installed in a reactor for producing the hydrogen peroxide through electrocatalysis, oxygen-containing gas is continuously introduced into a gas pipe, the oxygen-containing gas enters three-dimensional channels of the three-dimensional carbon electrode through a plurality of soft pipes and is diffused to the outside through the three-dimensional channels of the three-dimensional carbon electrode to enter an electrolyte of the reactor, and finally, the oxygen-containing gas passes through the reactor for producing the hydrogen peroxide through electrocatalysis, and the process of efficiently producing the hydrogen peroxide by using the three-dimensional carbon aeration electrode is completed. The three-dimensional carbon aeration electrode for efficiently producing the hydrogen peroxide can be obtained.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a three-dimensional carbon aeration electrode. Background technique [0002] Hydrogen peroxide (H 2 o 2 ) is an important industrial chemical, which is widely used in industrial fields such as chemical synthesis, pulp and paper bleaching, electronics industry, textile industry, metallurgical industry and water treatment. Especially in the field of water treatment, H 2 o 2 Tried to be used for disinfection and UV / H 2 o 2 , Fenton, H 2 o 2 / O 3 and other advanced oxidation processes. Currently, H 2 o 2 It is mainly produced by the Riedl-Pfleiderer process (anthraquinone oxidation) on an industrial scale. However, the application of this method has adverse impacts on the environment, produces a large number of toxic by-products, and consumes a large amount of energy. Furthermore, due to its high activity, high concentrations of H 2 o 2 The transporta...

Claims

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Application Information

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IPC IPC(8): C25B11/12C25B11/03C25B1/30
CPCC25B1/30C25B11/031C25B11/043
Inventor 马军李冬王鲁郑彤贾佳琳何海洋于佳馨
Owner HARBIN INST OF TECH
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