KR101272295B1 - Ship ballast water disinfection electrolysis electrode module - Google Patents

Abstract

PURPOSE: An electrode module for vessel ballast water sterilization is provided to constantly maintain a gap between electrode plates by using various conductive bus bars between positive and negative electrode plates which are alternatively arranged. CONSTITUTION: An electrode module for vessel ballast water sterilization includes a side cover, a top cover(200), a fixing bar(300), a full thread bolt(400), and an auxiliary bus bar. The side cover is a housing protecting electrode plates. The top cover is located on the upper part of the side cover and includes a base bus bar connected to an upper terminal and a lower terminal. The fixing bar is vertically combined with the bottom surface of the top cover and fixes a plurality of electrode plates(110). The full thread bolt is vertically combined with the base bus bar. The auxiliary bus bar is formed on the side of the full thread bolt. The fixing bar additionally includes an insulating spacer(310) located between the electrode plates, and the full thread bolt additionally includes a main bus bar(410) or a branch bus bar(420) which are located between the electrode plates.

Description

Ship ballast water disinfection electrolysis electrode module

The present invention relates to an electrode module for ship ballast water sterilization, and more specifically, to an electrolysis module applied to ship ballast electrosterilization, a portion of the ballast water may be fractionated from an all-pass type or ballast pipe mounted directly on the ballast water pipe. It relates to a laminated electrode module for electrolysis.

Related prior art is an electrode module having a plurality of negative electrode plates of Korean Patent Publication (No. 10-0950415), which has two or more negative electrode plates per positive electrode, and thus precipitates calcium hydroxide (Ca (OH)) on the negative electrode plate during electrolysis. ₂ ), Method of alternately washing magnesium hydroxide (Mg (OH) ₂ ) and welding each positive or negative electrode between the cross-arranged positive electrode and the negative electrode of the Patent Publication No. 10-1044256 between the insulated spacers There is an electrode module to be joined by, for example. As described above, the conventional method is to install a spare cathode electrode as a method for removing scale, or pickling using electrode switching, hydrochloric acid or sulfuric acid, ship scale remover, etc. And the like, and a method of fastening electrodes includes separating a positive electrode and a negative electrode and fastening a power line to each electrode.

However, conventional techniques require installation of additional cathode electrodes, pickling, polarity switching, etc. to remove calcium hydroxide (Ca (OH) ₂ ) and magnesium hydroxide (Mg (OH) ₂ ) that are deposited and accumulated on the anode plate. There was a problem that the cost of the ship's seamen and the additional negative electrode plate was increased, and in the method of fastening the electrodes, the complexity of the structure was generated by fastening the power lines to the individual electrodes, resulting in a maximum pressure of 7.5 in the ballast water pipe. Difficulty in manufacturing due to leakage of the bar or damage of the coating surface of the anode due to welding of individual electrodes.

An object of the present invention for solving the above-described conventional problems is to smoothly flow the current, by using a conductive bus bar between the electrode plate of the positive electrode or the negative electrode to maintain a constant electrode gap, the electrode plate fastening can be very simple ship ballast To provide a sterilizing electrode module.

Another object of the present invention is to provide an electrode module for ship ballast water sterilization that can simplify the structure by supplying power to the electrode plate through a computer bolt.

The ship ballast water sterilizing electrode module according to an embodiment of the present invention for solving the above-mentioned conventional problems and achieving the above object includes a side cover which is a housing for protecting the electrode plate; A top cover disposed on an upper side of the side cover and including a base bus bar formed at a top thereof and connected to a terminal at a bottom thereof; A fixing bar coupled to the top cover lower surface and fixed to the plurality of electrode plates; A threaded bolt coupled to the base busbar perpendicularly; An auxiliary bus bar formed on the side of the bolt, wherein the fixing bar further includes an insulating spacer positioned between the electrode plates, and the threaded bolt further comprises a main bus bar or a branch bus bar located between the electrode plates. It is characterized by including.

Here, the electrode plate is cross-arranged with a computer bolt, an auxiliary busbar and an anode / cathode, and then a monopolar (Monopolar) type that separates and connects both the anode plate and the cathode plate, or is coated with a transition metal without distinguishing the anode and the cathode. Applying an insoluble electrode to both the anode and the cathode, or coating only one side of the electrode with an insoluble electrode, and connecting it to a bipolar type that maintains a gap with insulating spacers instead of the main copper busbars. It features.

In addition, the gap between the positive electrode and the negative electrode in the electrode plate is characterized in that the salinity is maintained at a spacing of 6 mm or less in the processing conditions of 1PSU or more, and when the seawater conditions are designed to be formed up to 10mm or less.

In addition, the shape of the positive electrode and the negative electrode in the electrode plate can be rectangular, circular, polygonal, and the negative electrode is characterized by using a plate shape that is not physically processed to a thickness of 0.5 ~ 20mm.

In addition, the main, auxiliary or branch busbar, the positive electrode and the negative electrode terminal is implemented in any one material of copper, nickel, tin, lead, SS or SUS or in the form of nickel and tin plating on copper, the insulating spacer It is characterized in that the material is implemented in any one of PVC, PE, acetal.

In addition, the main bus bar is formed in any one of a circle, a triangle, a rectangle, a polygon and a thickness within a range of 2 to 20 mm to serve to maintain the electrode gap.

As described above, the ship ballast water sterilization electrode module according to an embodiment of the present invention is a copper having high conductivity between the electrode plates when the electrode plate is fastened in monopolar to the electrode plate having the same polarity in the fastening of the electrode plate. In other words, it is a laminated type that controls the electrode spacing by using a rectangular or rounded copper main busbar having a predetermined interval or a variety of shapes, and applies a current to the same electrode plate. By binding more than a certain torque has the effect of smoothing the flow of current.

The present invention can maintain a constant electrode plate spacing by using various conductive busbars between the cross-arrayed positive electrode and negative electrode (electrode plate), and the fastening is very simple to finally protrude the positive and negative terminals in one direction. Since there is an effect that the problem of leakage is lowered.

1 is a view showing an electrode module according to an embodiment of the present invention.
2 is a view showing an electrode plate according to an embodiment of the present invention.
3 is a view showing a top cover according to an embodiment of the present invention.
4 is a view showing an electrode plate fastening structure according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a process of generating calcium hydroxide (Ca (OH) ₂ ) and magnesium hydroxide (Mg (OH) ₂ ) scales generated from a cathode.
6 illustrates various sample electrode plates.
7 is a diagram illustrating a D2 reference table.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing an electrode module according to an embodiment of the present invention, Figure 2 is a view showing an electrode plate according to an embodiment of the present invention, Figure 3 is a top cover according to an embodiment of the present invention 4 is a view showing an electrode plate fastening structure according to an embodiment of the present invention.

As shown in FIGS. 1 to 4, the electrode ball 100 for ship ballast water sterilization mounted on the electrode module mounting part 20 of the leakage preventing gasket 10 according to the exemplary embodiment may include an electrode plate 110. Side cover (120) which is a housing (housing) to protect the base cover bar is formed on the upper side of the side cover 120, the terminal 210 is formed at the top and the terminal 210 at the bottom ( A top cover 200 including a top cover 200, a fixing bar 300 vertically coupled to the top surface of the top cover 200, and fixing a plurality of electrode plates 110, and a base bus bar 220. Computational bolt 400 is coupled to the vertical and a secondary bus bar 500 is formed on the side of the computation bolt 400.

Here, the fixing bar 300 further includes an insulating spacer 310 located between the electrode plates 110, and the computational bolt 400 is located between the main busbars 410 or between the electrode plates 110. It further includes a branch bus bar 420.

The electrode plate 110 is a monopolar (Monopolar) type, or the positive electrode and the negative electrode of the negative electrode and the negative electrode plate after cross-arranged to the computer bolt 400, the auxiliary bus bar 500, the anode and cathode Insoluble electrode coated with transition metal without distinction is applied to both anode and cathode, or only one side of the electrode is coated with insoluble electrode and connected with insulating spacer 310 instead of main copper busbar to connect only to electrodes at both ends Connect to Bipolar type.

In addition, the gap between the positive electrode and the negative electrode in the electrode plate 110 is maintained at a spacing of 6 mm or less in the treatment conditions of salinity of 1 PSU or more, and when the seawater conditions are designed to form a maximum of 10 mm or less.

In addition, the shape of the positive electrode and the negative electrode in the electrode plate 110 may be rectangular, circular, polygonal, and the negative electrode uses a plate shape that is not physically processed to a thickness of 0.5 to 20 mm.

In addition, the main 410, the auxiliary 500 or the branch busbar 420, and the positive and negative terminals 210 may be made of any one material of copper, nickel, tin, lead, SS or SUS or nickel on copper And it is implemented in the form of tin plating, the insulating spacer 310 is implemented with any one material of PVC, PE, acetal.

In addition, the main busbar 410 is formed in a shape of any one of a circle, a triangle, a rectangle, and a polygon and has a thickness within a range of 2 to 20 mm to serve to maintain the electrode gap.

As described above in detail through the embodiment an electrode module for ship ballast water sterilization according to the present invention as follows.

The anode of the electrode plate 110 used in the present invention is an electrode suitable for brackish water and seawater, which is a mixture of ruthenium and palladium having excellent chlorine generation, and includes an insoluble electrode using other transition metals.

Here, the anode material can be used to titanium (Titanium) G1 ~ 4 kinds, and the thickness of the plate or mesh shape can be applied between 0.5 ~ 10mm.

In particular, in determining the payload and the distance between the anode and the cathode in the electrode plate 110, the electrode according to the amount of chlorine (TRO as Cl ₂ ) and the water temperature ( ^o C), which are aimed at salinity and conductivity, The area and payload of the plates are determined and the sterilization target (D2) criteria must be met within the margin of power on board the ship.

<Relationship>

Apply current (A) ∝ f (Target TRO (mg / L as Cl ₂ ), Q (m ³ / hr), 1 / Current efficiency)

Voltage (V) ∝ f (Apply current (A), Rc (Ω), Ed, Eo)

Rc (Ω) = Electrode distance (cm) x Specific conductivity (Ωcm) / Anode area (cm ² )

Accordingly, the applied current (A) as shown in the above relation is proportional to the target TRO (mg / L as Cl ₂ ) and the ballast water flow rate (Q, m ³ / hr), and has excellent chlorine generation ability. The electrode is a high current efficiency (Current efficiency) because the amount of Cl ₂ generated relative to the current applied. At this time, there is a correlation in inverse proportion to the current efficiency.

<Anode reaction>

2Cl ^- → Cl₂ + 2e ^-

^{_{H 2 O → 0.5O₂ + 2H +}} + 2e -

<Cathode reaction>

2H ₂ O + 2e ^- ? H ₂ + 2OH ^-

In the reaction between the positive electrode and the negative electrode, two electrons are involved in the oxidation and reduction reactions. At this time, the current efficiency involved in the sterilization is related to the anode reaction, and the higher the efficiency of chlorine (Clorine, Cl ₂ ) than the amount of oxygen (Oxygen, O ₂ ) generated at the anode, the higher the current efficiency.

The applied voltage (Voltage, V) is determined by the current value and the specific resistance of the ballast number to be treated, the distance between the anode and cathode (cm) and the area of the electrode (cm ² ) according to the target TRO. Ed's constant value is Decomposition potential (V), Eo is overpotential (V), and the sum of Ed and Eo is about 3V. Accordingly, the spacing between the positive electrode and the negative electrode and the area of the positive electrode, which can be applied to the salinity 1 PSU within a margin of power in the ship, can be calculated as shown in Table 1 below.

TABLE 1

In order to keep the target TRO up to 10mg / L at 1PSU of salinity, the distance between anode and cathode is 3 ~ 6mm, and the area of anode should be 50,000 ~ 125,000cm ² to ensure effective sterilization within the limited power consumption of the vessel. This is possible. In addition, the electrode spacing is not less than 300m ³ / hr, but less than 150m ³ / hr to more than 1,000m ³ / hr, the electrode spacing is 3 ~ 6mm, but the area of the anode can increase or decrease proportionally. If the size of the anode (width x length) is determined using these results, the payload of the anode is determined, and since the anode and the cathode are cross-arranged in the stacked electrode module, the amount of the cathode is also the same as the amount of the anode Can be less.

FIG. 5 is a process of generating calcium hydroxide (Ca (OH) ₂ ) and magnesium hydroxide (Mg (OH) ₂ ) scales generated at a cathode, and performing physical processing such as sanding a cathode material to prevent accumulation of scale. It is advantageous to use plate disc of Titanium which is not used, and the speed of accumulation of scale can be increased by making physical roughness by sanding or using mesh.

Table 2 below shows the accumulation rate of the scale according to the samples under various conditions.

<Table 2>

As shown in FIG. 6, the cathode of the stacked electrode module of the present invention used a non-machined titanium plate-shaped disc, and a thickness of 0.5 mm to 10 mm is suitable. In addition, it is also possible to use a disc that is not physically processed by sanding, such as SUS (304, 316, 316L), washing with chemicals, a method of removing the scale or filed by the present inventors (Patent Application No. 10-2011-0113526) In the case of additionally equipped with a descaling device using air shearing force, a mesh-shaped disk such as titanium, SUS (304, 316, 316L) or a physically processed plate may be used.

As described above, when the electrode plate size, the loading amount and the scale cleaning method, which are determined according to the salinity of the ballast water to be sterilized, are not provided, an unprocessed Titanium plate-shaped disc is used to cross-align the positive electrode and the negative electrode, and the main booth The positive and negative portions stacked between the bars are crimped together using a bolt of 3mm or more. At this time, since the binding bolts, the main busbar, the auxiliary busbar, and the branch busbar are energized with the same material as electricity, the anode parts are easily oxidized, and the cathode parts are also Cl ^- or electric in the ballast water. HOCl, OCl ^- etc. from the decomposition cannot sustain their form by TRO. Accordingly, the parts may be molded in a non-conductive finish such as epoxy or silicon, paraffin, rubber, or teflon coating, or the parts may be coated with the above materials, respectively, to maintain their shape for a long time.

The laminated electrode module of the present invention is a laminated assembly method of the main busbar of the positive electrode and the negative electrode, and the secondary busbar, branch busbar, etc. to minimize the voltage drop, and finally 3mm computerized to give a constant binding pressure The use of bolts is characterized by binding to the positive and negative terminals, and the busbar fastening between the rectifier and the positive and negative terminals of the module is greatly simplified. Compared to the conventional method of connecting each electrode with a rectifier or welding each electrode with a busbar, the structure can be simplified and is the best method of avoiding damage to the coated surface of the anode surface by welding the electrode.

As described above, as a result of performing the test under the odd condition using the electrode module designed as described above as an effect according to an embodiment of the present invention, the following performance was confirmed. Test conditions were flow rate 300m ³ / hr, salinity 1PSU (Conductivity 2.2ms / cm), applied current 2,000A, water temperature 20 ^o C, average TRO 7.2mg / L as Cl ₂ , average power consumption 7.08Kw / 100m ³ , As shown in Fig. 7, the D2 standard could be satisfied.

While the present invention has been particularly shown and described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of course, this is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the equivalents as well as the claims that follow.

10: leak prevention gasket 20: electrode module mounting portion
100 electrode module 110 electrode plate
111: hole 120: side cover
200: top cover 210: terminal
220: base busbar 300: fixed bar
310: heat conductive spacer 400: threaded bolt
410: main busbar 420: branch busbar
500: auxiliary busbar

Claims (6)

In the marine ballast water sterilization electrode module,
A side cover which is a housing protecting the electrode plate;
A top cover disposed on an upper side of the side cover and including a base bus bar formed at a top thereof and connected to a terminal at a bottom thereof;
A fixing bar coupled to the top cover lower surface and fixed to the plurality of electrode plates;
A threaded bolt coupled to the base busbar perpendicularly;
Auxiliary bus bar is formed on the side of the computer bolt;
The fixing bar further comprises an insulating spacer positioned between the electrode plate, the computed bolt further comprises a main busbar or branch busbar positioned between the electrode plate ship ballast water sterilization electrode module.
The method according to claim 1,
The electrode plate is a monopolar (Monopolar) type that cross-arranged with a computer bolt, an auxiliary busbar and an anode / cathode, and then separate and connect both the anode plate and the cathode plate, or an insoluble electrode coated with a transition metal without distinguishing between the anode and the cathode. It is applied to both the positive electrode and the negative electrode or by coating only one side of the electrode with an insoluble electrode, and to maintain a gap with an insulating spacer instead of the main copper busbar, it is connected in a bipolar (Bipolar) type to connect only to the electrodes at both ends Electrode module for ship ballast water sterilization.
The method according to claim 1,
Electrode module for ship ballast water sterilization characterized in that the gap between the positive electrode and the negative electrode in the electrode plate is maintained at a spacing of less than 6mm in the treatment conditions of salinity 1PSU or more, and when the seawater conditions are designed.
4. The method according to any one of claims 1 to 3,
The electrode plate of the positive electrode and the negative electrode in the shape of a square, a circle, a polygon is possible, the negative electrode is a vessel ballast water sterilization electrode module, characterized in that using a plate shape that is not physically processed to a thickness of 0.5 ~ 20mm.
The method according to claim 1,
The main, auxiliary or branch busbars, the positive electrode and the negative electrode terminal is implemented in any one material of copper, nickel, tin, lead, SS or SUS or in the form of nickel and tin plating on copper, the insulating spacer is PVC, Marine ballast water sterilization electrode module, characterized in that implemented in any one material of PE, acetal.
The method according to claim 5,
The main bus bar is formed of any one of a circle, a triangle, a square, a polygon and a thickness within the range of 2 ~ 20mm, the ballast water sterilization electrode module, characterized in that it serves to maintain the electrode spacing.

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