Electrode for electrolysis and ion exchange membrane electrolytic cell

A technology of ion exchange membrane and electrolytic cell, which is applied in the field of electrodes, can solve the problems of uneven distance between electrodes, damage to ion exchange membrane, and inability to provide electrical connection, etc., and achieve the effects of easy handling, reliable current supply, and high toughness

Active Publication Date: 2004-10-20
CHLORINE ENGINEERS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The use of non-rigid materials leads to the following problems: the distance between electrodes becomes uneven due to the partial deformation of the non-rigid material due to improper pressing from the side of the counter electrode, and thin wires of the non-rigid material stick to the ion exchange membrane
[0012] However, as mentioned above, the leaf springs and metal grid are too rigid to damage the ion exchange membrane and do not provide sufficient electrical connection due to their low deformation rate

Method used

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  • Electrode for electrolysis and ion exchange membrane electrolytic cell
  • Electrode for electrolysis and ion exchange membrane electrolytic cell
  • Electrode for electrolysis and ion exchange membrane electrolytic cell

Examples

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example 1

[0061] A single-unit ion exchange membrane electrolysis cell was assembled as follows.

[0062] A dimensionally stable electrode obtained from Permelec Electrode, Ltd. was used as the anode, while an active electrode supported by a nickel microporous substrate was used as the cathode. The respective dimensions of the reaction surfaces of the anode and cathode are 110 mm wide and 1400 mm high. Flemion F-8934 obtained from Asahi Glass Co., Ltd. was used as the ion exchange membrane.

[0063] The winding diameter is 0.17mm, and the tensile strength is 620-680N / m 2 Nickel wire (JIS code: NW2201), giving a metal coil with a width of about 0.5 mm and a winding diameter (appearance diameter) of about 6 mm.

[0064] A metal wire was wound around a frame (anti-corrosion frame) formed of a round rod made of nickel with a diameter of 2 mm to adjust its shape to a rectangle, giving an elastic washer with a thickness of 10 mm, a width of 110 mm and a length of 350 mm. The metal coil mas...

example 2

[0068] A single-unit ion exchange membrane electrolysis cell was assembled as follows.

[0069] The effective area is 1540cm 2 An appropriately sized electrode (width 11 cm, height 140 cm) was used as an anode on which an electrode catalyst coating with a platinum group metal oxide was formed on a widened metal made of titanium obtained from Permelec Electrode, Ltd. And made. Using the anode flange, the anode is mounted on the anode chamber wall of the electrolytic cell.

[0070] A cathode current collector formed of widened nickel was mounted on the cathode chamber wall with a cathode flange formed of plate-like nickel.

[0071] The winding diameter is 0.17mm, and the tensile strength is 620-680N / m 2 Nickel wire (JIS code: NW2201), giving a metal coil with a width of about 0.5 mm and a winding diameter (appearance diameter) of about 6 mm.

[0072] A metal wire was wound around a frame (corrosion-resistant frame) formed of a nickel round rod with a diameter of 2 mm to adju...

example 3

[0079] A single-unit ion exchange membrane electrolysis cell was assembled as follows.

[0080] Set the effective area to 1540cm 2 An appropriately sized electrode (11 cm wide, 140 cm high) was used as the anode by forming an electrode catalyst coating with a platinum group metal oxide on a widened metal made of titanium obtained from Permelec Electrode, Ltd. layer made. With the anode flange, the anode is mounted on the anode chamber wall of the electrolytic cell.

[0081] A cathode current collector formed of widened nickel was mounted on the cathode chamber wall with a cathode flange formed of plate-like nickel.

[0082] Nickel fibers with a thickness of 5 mm, a width of 11 cm, and a length of 20 cm were woven by a fiber weaving machine to prepare a fabric in the form of uniform cotton threads. The fabric was soaked in a mixed solution containing an aqueous solution of hexahydrochloroplatinic acid (20 g / liter) and hydrochloric acid (10 g / liter) at room temperature for one ...

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Abstract

A metal coil or an elastic cushion formed by winding the metal coil around a corrosion-resistant frame is sandwiched between an electrode and an electrode collector or a cell wall or is used as an electrode. The elasticity of the metal coil or the elastic cushion enables the easy handling and the uniform contact between the electrode and another electrolysis element. The metal coil or the elastic cushion can be also used as an elastic cathode. The elasticity of the elastic cathode also enables the easy handling of the electrode itself and the uniform contact between the ion exchange membrane and the current collector.

Description

technical field [0001] The present invention relates to an electrode for electrolysis of an aqueous solution in which alkali metal chloride is dissolved or any other electrolytic solution, and an ion exchange membrane electrolytic cell using a hydrogen-generating cathode. Background technique [0002] As a representative typical industry, the electrolysis industry including chlorinated alkali electrolysis plays an important role in the material industry. In addition to this important role, in countries where energy costs are high such as Japan, energy saving is extremely required because energy consumed in chloralkali electrolysis is high. [0003] Chlor-alkali electrolysis has been converted from a mercury method to an ion exchange membrane method by a membrane method to solve environmental problems and realize energy saving. In fact, in about 25 years, energy savings of about 40% have been achieved. However, even this level of energy saving is still unsatisfactory, and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B9/19C25B9/23
CPCC25B9/04C25B9/045C25B11/02C25B9/66C25B9/65
Inventor 片山真二浅海清人
Owner CHLORINE ENGINEERS CORP LTD
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