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Electrochemical production device and manufacturing method of high-alkalization-degree aluminum polychlorid and Al13 chloride

A polyaluminum chloride and production device technology, which is applied in the electrolysis process, electrolysis components, cells, etc., can solve the problems of high energy consumption and low Al13 content in the inert electrode electrolysis method, and achieve the elimination of short circuit risks, reduction of ohmic drop, The effect of reducing thickness

Active Publication Date: 2013-09-18
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of high alkalization polyaluminum chloride and Al 13 The electrochemical production device of chloride and its manufacturing method are used to solve the high energy consumption of the current inert electrode electrolysis method and the Al in the product. 13 low content problem

Method used

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  • Electrochemical production device and manufacturing method of high-alkalization-degree aluminum polychlorid and Al13 chloride
  • Electrochemical production device and manufacturing method of high-alkalization-degree aluminum polychlorid and Al13 chloride
  • Electrochemical production device and manufacturing method of high-alkalization-degree aluminum polychlorid and Al13 chloride

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Embodiment 1

[0030] as attached Figure 1-2 Shown, a kind of high alkalization polyaluminium chloride of the present invention and Al 13 The electrochemical production device of chloride comprises a reaction vessel 6, a pump 14, an electrolytic cell stack 12, and a flow indicator 13 which form a closed loop and are connected in sequence, and a stirring device 7 and a pH and temperature composite probe 8 are arranged in the reaction vessel 6, The top of the reaction vessel 6 is also connected to the gas absorber 9, the controller 11 is connected to the pH and temperature composite probe 8, the DC power supply 10 is respectively connected to the electrolytic cell stack 12 through the controller 11, and the electrolytic cell stack 12 is composed of no less than one group of electrolytic cells. The cells are connected in parallel or in series, wherein each group of electrolytic cells is clamped by a plastic separator 1 and two adjacent inert electrodes 2 on both sides, and the plastic separato...

Embodiment 2

[0035] A 0.6 mm thick EVA material separator was used for the plastic separator, and the total electrolytic electricity was 3.0 mol electron electricity. Other devices and reaction conditions were the same as in Example 1. At this time, the PAC product solution 2 with a total aluminum concentration of 0.25mol / L was obtained.

[0036] Gained PAC product solution 2 obtains through Ferron colorimetric analysis, and its dissolved total aluminum concentration is still 0.25mol / L; 27 AlNMR characterization shows that the six-coordinated monomeric aluminum ion and Keggin structure Al in dissolved aluminum 13 The ion ratio is 0.8%:99.2%; the anion in the product is mainly Cl - (0.154mol / L) and a small amount of ClO 3 - Ions (5.3×10 -3 mol / L), the degree of alkalization is 78.4%.

Embodiment 3

[0038] A 0.6 mm thick ABS material separator was used as the plastic separator, and the total electrolytic electricity was 4.0 mol electron electricity. Other devices and reaction conditions were the same as in Example 1. At this time, the PAC product solution 3 with a total aluminum concentration of 0.25 mol / L was obtained.

[0039] Gained PAC product solution 3 obtains through Ferron colorimetric analysis, and its dissolved state total aluminum concentration is still 0.25mol / L; 27 AlNMR characterization shows that the six-coordinated monomeric aluminum ion and Keggin structure Al in dissolved aluminum 13 The ion ratio is 0.2%: 99.8%; the anion in the product is mainly Cl - (0.124mol / L) and a small amount of ClO 3 - Ions (1.62×10 -2 mol / L), the degree of alkalization is 81.8%.

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Abstract

The invention provides an electrochemical production device of high-alkalization-degree aluminum polychlorid and Al13 chloride. The electrochemical production device comprises a reaction container, a pump, an electrolytic cell stack and a flow rate indicator, which form a closed loop and are sequentially connected with one another, wherein the electrolytic cell stack consists of a plastic partition plate and an electrolytic cell group which are clamped, the electrolytic cell group consists of two inert electrodes which are adjacent to two sides of the plastic partition plate, both the plastic partition plate and each inert electrode are provided with a raw material liquid inlet and a product and half-finished product liquid outlet, respectively, and the inlet is connected with the outlet through a runner which is provided with a turbulence promotion grid. The invention also provides a manufacturing method of the high-alkalization-degree aluminum polychlorid and Al13 chloride by utilizing the production device. By adopting the device and the method, the distance between the electrodes and the polarization in an electrolysis process can be greatly reduced, the voltage loss in the electrolysis process can be reduced, and the energy consumption is reduced; rubber partitions such as aluminum hydroxide can be eliminated, and the aluminum polychlorid with high purity and alkalization degree and even the pure Al13 chloride can be directly produced.

Description

technical field [0001] The invention relates to a production device of polyaluminum chloride and a manufacturing method thereof, in particular to a high alkalinity polyaluminum chloride and Al 13 A device for electrochemically producing chloride and a method for producing the same. Background technique [0002] Partially neutralized aluminum chloride is also known as polyaluminum chloride (Polyaluminum Chloride, referred to as PAC), which can be obtained by the molecular formula Al m (OH) n Cl 3m-n Indicates that m≥1, 0<n≤3m. Its alkalinity can be expressed by n / 3m. Currently known polyaluminum chloride product with the highest alkalization degree is Aluminum Chlorohydrate (Aluminum Chlorohydrate, referred to as ACH, alkalization degree 83%), and its apparent molecular formula can be expressed as Al 2 (OH) 5 Cl 2H 2 O. [0003] PAC has a wide range of industrial applications, and its price is often closely related to its alkalinity and purity. PAC can be used as ...

Claims

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Application Information

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IPC IPC(8): C25B1/26C25B9/18
Inventor 张伟明陈庆
Owner WENZHOU UNIVERSITY
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