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A packed directional flow electrochemical reactor

A chemical reactor and filling technology, which is applied in the direction of electrolysis process, electrolysis components, electrolysis organic production, etc., can solve the problems of inability to remove electrochemical reaction products in time and effectively, complex structure of electrolysis device, slow electrochemical reaction speed, etc., to achieve Conducive to update, compact structure, small footprint

Active Publication Date: 2018-04-03
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] (1) For the reaction system with good electrochemical conversion reversibility between the reactant and the product, the existing electrolysis device will cause repeated conversion between the reactant and the product in the electrolysis reactor, which not only affects the conversion efficiency, but also waste of electricity;
[0014] (2) The existing electrolysis device cannot effectively use the flow of the electrolyte itself to provide a large turbulent force for rapid renewal of the reactants on the electrode surface, and the electrochemical reaction speed is relatively slow, thereby reducing the reaction conversion rate;
[0015] (3) For complex reaction systems containing side reactions, existing electrolysis devices cannot effectively remove electrochemical reaction products that cause side reactions in a timely manner;
[0016] (4) The existing electrolysis device has a complex structure and a large footprint

Method used

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  • A packed directional flow electrochemical reactor
  • A packed directional flow electrochemical reactor
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] see figure 2 , the reactor in this embodiment is horizontal, one end of cylinder 1 is provided with inlet connection short pipe 13, and the other end is provided with outlet connection short pipe 14, cylinder 1 is provided with a reaction unit, consists of two mutually insulated electrodes The electrode chamber 2 is composed of a cathode chamber and an anode chamber respectively. The electrode chamber 2 is composed of the area surrounded by the porous plate electrodes 4 at both ends and the corresponding cylinder 1. The electrode chamber 2 is filled with a conductive electrode material 3 . The electrode material 3 can be granular activated carbon, coal coke, petroleum coke or corrosion-resistant metal shavings, or metal pellets modified by noble metal salts, with a particle size of 8-20 mm (the particle size of the electrode material 3 is larger than that of the porous plate electrode 4). aperture). Both ends of the electrode chamber 2 are provided with porous plate ...

Embodiment 2

[0056] see Figure 5 , the electrode chamber 2 is made up of a mesh structure 16 made of conductive material, there is no porous plate electrode 4 and the electrode material 3 filled therein, and the rest of the structure is the same as in Example 1, and the conductive material can use Made of strong lead, platinum, titanium, graphite and other materials. The electrolyte is the concentrated liquid of the concentration tower in the flue gas wet ammonia-complex absorption synchronous desulfurization and denitrification system.

[0057] work process:

[0058] The physical parameters and related composition of the concentrated liquid from the concentration tower in the flue gas wet ammonia-complex absorption synchronous desulfurization and denitrification system are as follows:

[0059] pH value: 4.0~5.0;

[0060] Ammonium sulfate concentration: 30-45%;

[0061] EDTA-Fe(Ⅱ)+EDTA-Fe(Ⅲ) concentration: 0.05~0.1mol / L;

[0062] Absorption liquid temperature: about 50-60°C.

[0063...

Embodiment 3

[0082] see figure 1 , the reactor in this embodiment is a vertical type, the basic structure is the same as the horizontal type in Embodiment 1, the upper layer electrode chamber 2 is a cathode chamber, and the lower layer electrode chamber 2 is an anode chamber, the only difference is that there is no buffer box 5, gas discharge The outlet 6 and the filling electrode are taken out of the outlet 15, and the rest are the same as in the first embodiment.

[0083] crafting process:

[0084] The source of the electrolyte is the same as in Example 1, and the reaction process is the same as in Example 1. The electrolyte enters the reactor from the inlet connection short pipe 13 at the bottom of the reactor, flows directionally from bottom to top, and passes through the anode chamber and cathode chamber successively from the top of the reactor. Outlet connects short pipe 14 to flow out, and all the other are with embodiment 1. Iron removal efficiency is 90%.

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Abstract

The invention discloses a packed directional flow electrochemical reactor, which solves the problems of low reaction conversion efficiency, high energy consumption, complex structure, high operation cost, poor adaptability and the like existing in the existing electrochemical reactor. The technical solution includes a cylinder body, the two ends of the cylinder body are short inlet connection pipes and outlet connection short pipes respectively, and at least one reaction unit is arranged in the cylinder body, and the reaction unit is composed of two electrodes with opposite poles and insulated from each other. The chamber is composed of a cathode chamber and an anode chamber respectively, and the inlet connection short pipe of the cylindrical body communicates with the outlet connection short pipe through the two electrode chambers of the reaction unit in turn. The invention has the advantages of simple structure, low investment cost and operation cost, high conversion efficiency, and is suitable for electrolytes with various properties.

Description

technical field [0001] The invention relates to an electrolytic reactor, in particular to a packed directional flow electrochemical reactor. Background technique [0002] According to different structures, traditional electrochemical reactors can be divided into three types: box type, filter press type or plate and frame type, and special structural type; according to their different working methods, they can be divided into batch type, plunger flow type, and continuous stirring box type Three categories. In order to prevent the reversible reaction of the three-dimensional electrode reactor and the plug-flow electrode reactor with special structure, it is generally necessary to use a special structure of the diaphragm, which is very important for the electrochemical conversion between the reactant and the product. Good reversible reaction system, the use of diaphragm can save power consumption and improve the conversion rate of reactants. However, due to the existence of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B3/10C25B9/00C25B3/29
CPCC25B9/00C25B3/29
Inventor 吴高明卢丽君康凌晨
Owner 武汉钢铁有限公司
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