JPS60141883A - Dropping device - Google Patents

Abstract

PURPOSE:To apply efficiently large liquid resistance and to minimize leaking current as far as possible by dropping the liquid discharging from a bipolar salt electrolysis cell of an ion exchange mambrane type through the insertion pipe on the side face of each dropping plate and through the dropping plates into a receiving cell in the form of drops for each of the respective unit electrolytic cells. CONSTITUTION:Plural dropping plates 3 which are inserted therein with perforated insertion members 10 and have plural dropping holes 8 exist respectively independently without being electrically connected to each other in the upper part of an integrated liquid receiving tank 6. The plates 3 and insertion pipes 4 which are inserted therein from the side faces thereof, are connected from unit electrolytic cells and are provided by one for each of the plates 3 exist dividedly from the respective tanks 6 and are united to one unit in the stage of use. The liquid contg. gas discharged from each unit electrolytic cell flows through the pipings 4 to the plates 3 where the gas is separated and is discharged through an outlet 2. The liquid passes through the holes 8 and falls in the form of drops into the tank 6 by which the drops are parted and large liquid resistance is applied thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a dripper for collecting salt water or caustic soda solution discharged from a tank.

A bipolar electrolytic cell has a structure in which a plurality of unit electrolytic cells are integrated and combined, but when liquid drained from each unit electrolytic cell is collected, current leaks through the liquid. If the current leakage becomes small compared to the current originally used for electrolysis, the amount of reactive current that is not used for electrolysis will increase. (titanium, cathode chamber made of stainless steel, etc.), ion elution from the electrolytic tank water can cause stains, which can shorten the life of the tank. For this reason, it is necessary to provide a large liquid resistance to the liquid discharged from the electrolytic cell and to minimize leakage. One way to do this is to make the discharge pipe for the liquid discharged from the electrolytic cell as thin and long as possible to provide liquid resistance. However, with this method, large internal pressure fluctuations in the electrolytic cell may cause damage to the membrane or shorten its lifespan.

By providing a larger leakage resistance to the dropper, the diameter of the pipe connecting the electrolytic cell and the dropper can be made thicker and as short as possible, thereby minimizing internal pressure fluctuations in the electrolytic cell. It also protects the membrane and has the secondary effect of extending the life of the membrane.

In order to improve the above-mentioned problems, the present invention proposes a dropper that can provide a large liquid resistance extremely efficiently, can minimize leakage current, and can be easily repaired.

In order to explain the present invention in more detail, the present invention will be explained based on FIGS. 1.2.5 and 4, which are one embodiment of the present invention.

The gas-containing liquid discharged from each unit electrolytic cell is transferred to the insertion tube (
4) to the drip plate (3). Here, the gas and liquid are separated and the gas is discharged from the upper gas outlet (2). The liquid from which the gas has been separated is passed through a plurality of drip holes (8)' through which a perforated insertion member (2) is inserted into the bottom of the drip plate.
The liquid drops into the liquid receiving tank (6) in a spiral manner, causing the liquid to be broken off and giving a large liquid resistance.

It is preferable that the tip of the perforated insertion member 01 protrudes from the bottom surface of the dripping disc. This is because droplets dripping from adjacent drip holes are prevented from coalescing.

The dripping disk is supported by a dripping disk support (5), and the tip of the insertion tube is inserted into the inside of the dripping disk from the side thereof.

By doing so, the scattering of the liquid discharged from each unit electrolytic cell is further reduced, and leakage between adjacent drip plates is prevented to the maximum extent possible. Further, the dripping discs are arranged at appropriate distances from each other and are electrically independent from each other. The insertion tube can be pulled out from the side, making it easy to replace the dripping disk, liquid receiving tank, and other parts, and repairing the dripper.

Furthermore, by making the perforated insertion member separable from the dripping disc, when changing the conditions of use of the dripper, for example, when changing the fluid used, changing the flow rate, changing the fluid temperature, etc. It has the advantage that it can be easily implemented by replacing the perforated insertion member with the other one.

) The material of the drip disk, perforated insertion member, and insertion tube may be any material that is resistant to the gases and liquids passed therethrough and is electrically nonconducting.

Usually, fluorine-containing plastics (e.g. FEP, P
FA, PTFE, ETFB, PVDF, etc.) are preferably used. Any material can be used for the liquid receiving tank and the lid as long as it is resistant to gas and liquid and is electrically non-conductive. If further strength is required, metal fittings lined with rubber or fluorine-containing plastics reinforced with FRP on the outside can also be used.

One aspect of the structure of the dripping disc (3) is shown in Figure 17. A plurality of drip holes (8) are drilled in the bottom of the box-shaped container.

A perforated insertion member is inserted into the drip hole.

In some cases, the drip disk and the perforated insertion member may be integrated. Inner diameter of perforated insertion member 0Q.

The number of drip holes and the height of the drip from the bottom of the drip plate (3) to the liquid level in the liquid receiving tank can be designed in any way.

This can be selected in any way depending on the operating conditions of the electrolytic cell.

Examples of how the dropper of the present invention is used will be shown below.

Usage example: When performing salt electrolysis in a bipolar electrolytic cell with a unit electrolytic cell number of 25 Fr, when 10,000 A was applied and a sliding voltage of 75 V was exhibited, -γ was applied to the dripping plate for each unit electrolytic cell. The drip hole (8) into which the perforated insertion member with an inner diameter of 6z is inserted is 1
There are two droppers, and when the dripping height is set to 500%,
When flowing 252% NaOH at 90°C at an average liquid volume of 4004/I (approximately 400
A resistance of 0Ω was applied.

[Brief explanation of drawings]

FIG. 1 is an overall view of the dripper showing the functions of the present invention, FIG. 2 is an enlarged view of the dripping board, FIG. 3 is a top view and side view of the dripping board showing the functions of the present invention, and FIG. The figure is an enlarged view of the perforated insert. (1) Lid (5) Dripping plate support (2) Gas outlet (6) Liquid receiving tank (3) Dripping plate (7) Liquid outlet (4) Insertion tube (8) Dripping hole (9) Insertion tube insertion port OQ Perforated insertion member patent applicant: Toyo Hitachi Kogyo Co., Ltd.

Claims (1)

[Claims] A plurality of dripping discs each having a plurality of liquid dripping holes into which perforated insertion members are inserted are provided independently in the upper part of the integrated liquid receiving tank without being electrically connected, and the dripping discs are inserted from the dripping disc and its side. The invention is characterized in that there is one insertion tube for each drip plate connected to the unit electrolytic cell, separated from the liquid receiving tank, and that these are integrated when used. Dropper.