JPH0740769U - Horizontal multi-stage electrolyzer - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a horizontal multi-stage electrolytic cell without gas accumulation or scale accumulation. [Structure] In a horizontal multi-stage electrolytic cell having a channel-type cell body 5 with a lid having a plurality of electrode plates 1 arranged in multiple stages and having flanges at both ends, a box-shaped cell is connected to the flanges at both ends of the cell body at both ends. Terminal case with flange 4,
An inlet nozzle 7 and an outlet nozzle 8, which are connected to the upstream and downstream terminal cases, respectively, have flanges at both ends, and have a flow passage extending substantially in the center toward the terminal case,
A cathode energizing rod 7 and an anode energizing rod 8 which are respectively inserted into the terminal case in the flow direction from both left and right ends of the flanges of the inlet nozzle and the outlet nozzle and connected to the electrode plate are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a horizontal multistage electrolytic cell for seawater electrolysis.

[0002]

[Prior art]

 A conventional example will be described with reference to FIGS. 6 is a vertical sectional view, FIG. 7 is a sectional view taken along the line BB of FIG. 6, FIG. 8 is a sectional view taken along the line CC of FIG. 6, FIG. 9 is a sectional view taken along the line FF of FIG. 6, and FIG. It is a figure.

In FIG. 6, terminal cases 4 are connected to both ends of a channel type tank body 5 having a lid 6. Further, an inlet nozzle pipe 7 and an outlet nozzle pipe 8 are connected to both ends thereof. A gas vent flange 9 is attached to the upper surface of the terminal case 4.

Cathode conducting rods 2 are inserted parallel to the flow direction above and below the center of one of the terminal cases 4 and are connected to the electrode plate 1. Similarly, the anode current-carrying rod 3 is inserted into the other terminal case 4 and connected to the electrode 1 (FIG. 6).

As shown in FIGS. 9 and 10, the electrode plates 1 in the tank body 5 are arranged in multiple stages in a stagger in parallel with the flow. In the figure, the black-colored portion of each electrode plate 1 serves as an anode.

In the above description, the current flows from the + side current-carrying rod 2 to the electrode plate 1, and sequentially flows through the electrode plate 1 at each stage from the-side current-carrying rod 3 to the power supply device. During this time, seawater is electrolyzed into sodium hypochlorite. At this time, the upper portions of the current-carrying rods 2 and 3 serve as a reservoir for hydrogen gas generated during electrolysis. In addition, the lower part serves as a pool of scale generated during electrolysis.

[0007]

[Problems to be solved by the device]

 In the above-mentioned conventional device, since the current-carrying rods are attached to the upper and lower sides, the area around the upper current-carrying rod becomes a gas reservoir for hydrogen gas generated during electrolysis. In order to remove this gas, it was necessary to attach a flange to the energizing terminal case and lay out a gas exhaust pipe.

In addition, around the lower energizing rod becomes a pool of scale generated during electrolysis, which requires periodic cleaning.

[0009]

[Means for Solving the Problems]

 The present invention takes the following measures to solve the above problems.

That is, in a horizontal multi-stage electrolysis cell having a channel-type cell body with a lid having a plurality of electrode plates arranged in multiple stages and having flanges at both ends, a box-type is connected to the flanges at both ends of the cell body, respectively. A terminal case having flanges at both ends, an inlet nozzle and an outlet nozzle connected to the above-mentioned terminal case on the upstream side and the downstream side, respectively, and having flanges at both ends, and having a flow passage expanding in the direction of the same terminal case at substantially the center, A cathode energizing rod and an anode energizing rod which are respectively inserted into the terminal case in the flow direction from the left and right ends of the connection side flanges of the inlet nozzle and the outlet nozzle and connected to the electrode plate are provided.

[0011]

[Action]

 In the above, a current is passed from the left and right anode conducting rods to the cathode conducting rods. Furthermore, seawater is introduced from the inlet nozzle. Then, seawater is sequentially divided into electricity by the electrode plates at each stage in the tank body. At this time, unlike the conventional example, since there are no current-carrying rods on the upper and lower sides, the lower and upper surfaces of the terminal case are connected to the upper and lower surfaces of the tank body almost smoothly, so that the fluid flows smoothly. For this reason, gas pools and scale pools do not occur.

[0012]

【Example】

 An embodiment of the present invention will be described with reference to FIGS.

1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a sectional view taken along the line EE of FIG. 1, and FIG. 4 is a view taken along the line DD of FIG. FIG. 5 is an explanatory diagram of the electrode plate arrangement. The parts explained in the conventional example are given the same numbers and their explanations are omitted, and the parts relating to the present invention will be mainly explained.

In FIG. 1, a box-shaped terminal case 4 having flanges at both ends is connected to both end flanges of the tank body 5. An inlet nozzle 7 and an outlet nozzle 8 each having a flange at both ends and a flow passage extending to the terminal case 4 side at the center are connected to the flange of each terminal case 4, respectively. As shown in FIGS. 2 to 5, the cathode energizing rod 2 and the anode energizing rod 3 are placed in the terminal case 4 in the flowing direction from both left and right ends of the flange on the connecting side (base side) of the inlet nozzle 7 and the outlet nozzle 8. Is inserted. The current-carrying rods 2 and 3 are welded or connected to the reinforced electrode plates 1A at the left and right ends by bolts or the like.

The lower part of each electrode plate 1, 1 A in the terminal case 4 is held via a spacer 11 whose upper surface b has a height substantially equal to the lower surface (lower surface) of the tank body 5. The lower surface c of the upper portion is held via a spacer 12 having a height substantially equal to the lower surface of the tank body 5.

In the above, a current is passed from the left and right anode conducting rods 3 to the cathode conducting rods 2. Further, seawater is introduced from the inlet nozzle 7. Then, the seawater is sequentially electrically divided by the electrode plates 1 at the respective stages in the tank body 5. At this time, the lower surface and the upper surface of the terminal case 4 are connected to the upper surface and the lower surface of the tank main body almost smoothly (the upper surface b of the spacer 11 and the lower surface c of the spacer 12), so that the fluid flows smoothly. For this reason, gas pools and scale pools do not occur.

Further, it is structurally simple, and a gas vent flange, piping, etc. are not required. This eliminates the need for regular cleaning and enables safe and maintenance-free operation.

[0018]

[Effect of device]

 Since the upper and lower surfaces of the terminal case are connected to the upper and lower surfaces of the tank body almost smoothly, the fluid smoothly flows and dangerous hydrogen gas is not accumulated. In addition, there will be no scale accumulation.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1 of the same embodiment.

FIG. 3 is a sectional view taken along line EE in FIG. 1 of the same embodiment.

FIG. 4 is a DD view of FIG. 1 of the embodiment.

FIG. 5 is an explanatory diagram of an electrode plate arrangement of the same embodiment.

FIG. 6 is a vertical sectional view of a conventional example.

7 is a sectional view taken along line BB of FIG. 5 of the conventional example.

8 is a sectional view taken along line CC of FIG. 5 of the conventional example.

FIG. 9 is a sectional view taken along line FF of FIG. 5 of the conventional example.

FIG. 10 is an explanatory view of the electrode plate arrangement of the conventional example.

[Explanation of symbols]

 1, 1A Electrode plate 2 Cathode energizing rod 3 Anode energizing rod 4 Terminal case 5 Tank body 6 Lid 7 Inlet nozzle 8 Outlet nozzle 10 Flow path 11, 12 Spacer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Seiichi Harada, 12 Nishiki-cho, Naka-ku, Yokohama-shi, Mitsubishi Heavy Industries Ltd. Yokohama Works (72) Naoko Seki, 12 Nishiki-cho, Naka-ku, Yokohama Mitsubishi Heavy Industries, Ltd. Yokohama Works Within

Claims (1)

[Scope of utility model registration request] 1. A horizontal multi-stage electrolytic cell having a channel-type cell body with a lid having a plurality of electrode plates arranged in multiple stages and having flanges at both ends, and box-shaped both ends respectively connected to flanges at both ends of the cell body. A terminal case having a flange, and an inlet nozzle and an outlet nozzle that are connected to the upstream and downstream terminal cases, respectively, have flanges at both ends, and have a flow passage that expands in the same direction toward the terminal case at approximately the center.
A horizontal type comprising a cathode current-carrying rod and an anode current-carrying rod, which are respectively inserted into the terminal case in the flow direction from the left and right ends of the connection side flanges of the inlet nozzle and the outlet nozzle and are connected to the electrode plate. Multi-stage electrolyzer.