内部歧管型电解槽的单元框架和单元、及内部歧管型电解槽

Abstract

本实用新型提供一种能够防止电解效率的降低的内部歧管型电解槽的单元框架和单元、及内部歧管型电解槽。在内部歧管型电解槽的单元框架(4)形成有：收纳开口(10)，其能够收纳划分电极室的分隔壁；供给通路，其用于向电极室供给电极液；以及排出通路(14)，其用于从电极室排出电极液和生成气体。供给通路包括配置于收纳开口(10)的下方的供给开口和将供给开口与收纳开口(10)连通的供给凹部。排出通路(14)包括配置于收纳开口(10)的上方的排出开口(20a)和将排出开口(20a)与收纳开口(10)连通的排出凹部(22a)。排出凹部(22a)具有与收纳开口(10)相邻地沿着收纳开口(10)延伸的气液分离促进部(24a)。

Claims

1. A unit frame for an internal manifold type electrolytic cell, characterized in that, The unit frame of the internal manifold type electrolyzer has an opening for receiving the partition walls that divide the electrode chambers. A supply passage for supplying electrode liquid to the electrode chamber; And a discharge passage for discharging the electrode liquid from the electrode chamber and generating gas. The supply passage includes a supply opening disposed below the storage opening and a supply recess communicating with the supply opening and the storage opening. The discharge passage includes a discharge opening disposed above the receiving opening, and a discharge recess communicating with the discharge opening and the receiving opening. The discharge recess has a gas-liquid separation promoting section that extends along the receiving opening adjacent to it.

2. The unit frame of the internal manifold type electrolytic cell according to claim 1, characterized in that, The length of the gas-liquid separation promoting section along the direction of the receiving opening is more than 1 / 4 and less than 1 / 2 of the perimeter length of the receiving opening.

3. The unit frame of the internal manifold type electrolytic cell according to claim 1, characterized in that, The receiving opening is circular, and the gas-liquid separation promoting part is arc-shaped.

4. The unit frame of the internal manifold type electrolytic cell according to claim 1, characterized in that, The electrode chamber comprises an anode chamber and a cathode chamber. The supply passage includes an anode-side supply passage for supplying anolyte to the anode chamber and a cathode-side supply passage for supplying catholyte to the cathode chamber. The discharge passage includes an anode-side discharge passage for discharging the anolyte and anode-generated gas from the anode chamber, and a cathode-side discharge passage for discharging the catholyte and cathode-generated gas from the cathode chamber. The gas-liquid separation promoting section is provided in at least one of the anode-side discharge passage and the cathode-side discharge passage.

5. A unit of an internal manifold type electrolytic cell, characterized in that, The unit of this internal manifold type electrolyzer comprises: the unit frame as described in claim 1; a supply-side cover plate covering the supply recess; and a discharge-side cover plate covering the discharge recess. In the unit frame, a supply-side support recess, shallower than the supply recess, is formed adjacent to the supply recess, and a discharge-side support recess, shallower than the discharge recess, is formed adjacent to the discharge recess. The supply-side support recess supports the inner surface of the supply-side cover plate, and the discharge-side support recess supports the inner surface of the discharge-side cover plate. The outer surfaces of the supply-side cover plate and the discharge-side cover plate are on the same plane as the surfaces of the portions of the unit frame that do not form the supply recess, the supply-side support recess, the discharge recess, and the discharge-side support recess.

6. The unit of the internal manifold type electrolytic cell according to claim 5, characterized in that, Multiple supply-side support protrusions are provided at intervals between each other in the supply recess. The plurality of supply-side support protrusions and the supply-side support recesses together support the inner surface of the supply-side cover plate. Multiple discharge-side support protrusions are provided at intervals between each other in the discharge recess. The plurality of discharge-side support protrusions and the discharge-side support recess together support the inner surface of the discharge-side cover plate.

7. The unit of the internal manifold type electrolytic cell according to claim 5, characterized in that, The supply-side cover and the discharge-side cover are joined to the unit frame by welding.

8. The unit of the internal manifold type electrolytic cell according to claim 7, characterized in that, The supply-side support recess has a joint extending in a direction away from the receiving opening. The supply-side cover plate has a engaged portion extending in a direction away from the receiving opening. The joined portion of the supply-side cover plate is joined to the joined portion of the supply-side support recess by welding.

9. The unit of the internal manifold type electrolytic cell according to claim 7, characterized in that, The discharge-side support recess has a joint extending in a direction away from the receiving opening. The discharge side cover has a engaged portion extending in a direction away from the receiving opening. The joined portion of the discharge side cover is joined to the joined portion of the discharge side support recess by welding.

10. The unit of the internal manifold type electrolytic cell according to claim 5, characterized in that, The supply-side support recess is connected to the discharge-side support recess, and the supply-side cover plate and the discharge-side cover plate are formed as one piece.

11. The unit of the internal manifold type electrolytic cell according to claim 5, characterized in that, A partition wall is fixed to the storage opening of the unit frame. The partition wall has a first main surface and a second main surface located on the opposite side of the first main surface. On the first main surface side of the partition wall, a first current collector, a first electrode, and a membrane are arranged sequentially from near to far from the first main surface. On the second main surface side of the partition wall, a second current collector, a buffer, and a second electrode are arranged sequentially from near to far from the second main surface. A gasket is fitted onto the unit frame, which, together with the unit frame, the supply-side cover plate, and the discharge-side cover plate, clamps the periphery of the membrane.

12. An internal manifold type electrolytic cell, which is an internal manifold type electrolytic cell formed by arranging multiple units as described in claim 5 along a predetermined direction, characterized in that, The unit frame has a first main face and a second main face located on the opposite side of the first main face. In adjacent units, the first main face of the unit frame faces the second main face of the unit frame. The supply openings of the unit frame are interconnected to form a supply manifold. The discharge openings of the unit frame are interconnected to form a discharge manifold.

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