JPS6114103A - Ozonizer using ceramic - Google Patents

Abstract

PURPOSE:To obtain the titled ozonozer which is small-sized and has a large capacity by laminating a ceramic platy electric field device wherein a cooling fluid circulating hole is provided through an insulating corrugated sheet. CONSTITUTION:A cooling liquid circulating hole 11 is provided to a base plate 1 made of a ceramic dielectric, and linear ground electrodes 3, 3, etc. are furnished on the upper surface 2 in the direction vertical to the cooling fluid circulating hole 11. A sheet induction electrode 5 is provided above the cooling fluid circulating hole 11 at the inside of the terminal 5a of the sheet induction electrode are connected to an electric power source 4 to form a platy electric field device (the symbol 6 is an earth). The desired number of said platy electric field devices are laminated through an insulating corrugated sheet 7 so that the cooling fluid circulating hols 11 may cross vertically the axis of the corrugated sheet 7 (however, the corrugated sheet 7 is kept out of contact with the linear induction electrode 3). A laminated ozonizer is obtained in this way.

Description

Detailed Description of the Invention [Industrial Application Field] This invention relates to an ozonizer using a ceramic consisting of several layers of ozonizers, and is used for the production of 03 by oxidation of 0□, NO,..., SOx. This relates to denitrification by oxidation, sulfur removal, etc. An ozonizer is an insulator with electrodes that generates high-frequency corona discharge by applying high-frequency high voltage and can be used as a powerful ion source. It has a discharge chemical action by generating active plasma.

[Prior art] Ozonizers are generally flat or cylindrical in shape, so a large flat or cylindrical device is generally required to create a device with a large capacity, and if they are made of ceramic, they are brittle and easily break. Ta. (Japanese Patent Application No. 57-155617) [Means for Solving the Problem] This invention eliminates this drawback and provides an ozonizer with a small volume and a large capacity by stacking many layers of plate-shaped ozonizers. An ozonizer is formed by providing a plurality of electrodes on a substrate made of a ceramic dielectric such as alumina porcelain, zirconia porcelain, or silicon nitride porcelain, and an insulator made of synthetic resin, glass, or ceramic is placed in a non-contact state with the electrodes. In an ozonizer using ceramic, which is characterized by having a structure in which a corrugated plate or a grid-like object is installed and the corrugated plate or grid-like object is repeated, the corrugated plate or grid is installed in the substrate that becomes the ozonizer. A large number of fluid passages for passage of cooling fluid are provided in different directions.

[Embodiments and Effects] This invention will be explained with reference to the drawings. A linear ground electrode is connected to a terminal 3a on the upper surface 2 of a substrate 1 having a cooling fluid circulating heat 11 formed of a ceramic dielectric in a direction perpendicular to the linear electrode. A planar induction electrode 5 is buried inside the substrate l above the cooling fluid flow hole, and an electric field forming power source 4 is provided between the linear ground electrode 3 and the planar induction electrode 5. A ground 6 is provided between the electric field forming power source 4 and the linear ground electrode 3. 5a are both ends of the planar induction electrode. Furthermore, in order to manufacture the plate-shaped ozonizer device of the invention, a binder such as a copolymer of vinyl chloride and vinyl acetate is added to a fine ceramic material such as alumina powder, zirconia powder, and silicon nitride powder, and after kneading, a well-known method is used. Extruded using a honeycomb extrusion device, a paste containing powder of a conductive material such as molybdenum or tungsten is screen printed on the surface to form a planar induction electrode 5, and a ceramic paste made of the same material as the green sheet is applied to the applied surface. 3. Dry and place a linear ground electrode on its upper surface. Screen print the terminal 3a. This is held at 1600° C. for 1 hour in a non-oxidizing atmosphere and sintered. Thereafter, nickel plating is applied to the linear ground electrode portion 3 on the upper surface.

Next, a corrugated structure made of synthetic resin, glass, or ceramic is shown in a perspective view in Figure 3, or a perspective view is shown in Figure 4.
A grid-like object showing 1° recovery was made, and the first
Install the plate-shaped ozonizer shown in the figure and repeat this process as many times as desired. The plate-shaped ozonizer in the uppermost layer can be grounded with the linear ground electrode facing downward. This sectional view is shown in FIG. It is preferable that the corrugated plate or lattice-like material and the plate-like ozonizer be properly provided with recesses 9 on the surface 2 of the substrate of the plate-like ozonizer, or bonded together with an adhesive 10, so that they do not shift in position during use. Furthermore, as shown in Figure 6 (linear electrodes can be provided on both sides of the central ozonizer substrate), the material constituting the corrugated plate or lattice-like material may be polyethylene, phenol resin, vinyl chloride, etc. in the case of synthetic resin, or polyethylene, phenol resin, vinyl chloride, etc. in the case of glass. General silica/soda glass, crystallized glass, ceramics such as alumina porcelain, silicon nitride porcelain, zirconia porcelain, etc., as well as general ceramics, cement, asbestos, etc. may be used.These are formed by extrusion, and ceramic materials are sintered as appropriate. It can be manufactured by firing at a certain temperature.The adhesive is vinyl acetate,
Epoxy resin-based, phosphoric acid-based and instant adhesives can also be used effectively.

The ozonizer manufactured in this way allows several layers of ozonizers to be installed in a relatively small space, making it possible to design a compact ozonizer with a large capacity.Also, the corrugated plate or grid-like object can be placed in a non-contact state with the linear electrode. Since the ceramic substrate is installed in It can withstand permanent use without causing any damage even when used, and can be used to charge and remove static electricity from powder.If an ultra-short pulse high voltage is applied between both electrodes, a creeping corona along the dielectric surface 2 can be created. generates a discharge
At the same time, active plasma is formed and discharge chemical action becomes active, resulting in a gas oxidation device with a small size and large capacity, which can be used for ozonizers, oxidation of NOx, SOX, etc.

Furthermore, since the corrugated plate on the surface having the linear electrodes and the cooling fluid circulation holes are provided in a substantially perpendicular direction, 02 can be passed in the axial direction of the corrugated plate and the cooling fluid can be passed in the opening direction of the circulation holes 11. For example, they flow together without mixing and the heat generated can be easily removed and cooled.

In addition to the plate-shaped ozonizer shown in the above-mentioned embodiments, the present invention can also be applied to an ozonizer in which meandering shadow line electrodes 12 and 13 are provided on one or both sides of a substrate as shown in a perspective view in FIG. 8th
Of course, one provided with comb-teeth shadow line electrodes 14 and 15 as shown in the figure can also be used.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one substrate of the ozonizer of the present invention;
FIG. 2 is a sectional view taken along the line nn in FIG. 1 and a circuit diagram showing the state in which the device of the present invention is used. Fig. 3 is a perspective view of a corrugated plate, Fig. 4 is a perspective view of a lattice-like object, and Figs. 5 and 6 are sectional views and usage conditions corresponding to Fig. 2 of the ozonizer using the ceramic of the present invention. FIG. 7 and 8 are perspective views of another embodiment of the ozonizer substrate. 1...Substrate, 2...Coating layer, 3...
... Linear ground electrodes 1, 3 a ... Terminal, 4.
...Electric field forming power source, 5...Planar induction electrode, 6...Earth, 7...Corrugated plate, 8.
... Grid-like object, 9 ... Concavity, 10 ...
. . . Adhesive 11 . . . Cooling fluid circulation hole, 12.
13...Meandering type *1v! J Figure 2a Figure 3 Figure 4 Figure 5

Claims (3)

[Claims] (1) A plate-shaped ozonizer is formed by providing a plurality of electrodes on a substrate made of a ceramic dielectric, and an insulating corrugated plate or grid-like object is installed in a non-contact state with the electrodes. In an ozonizer using ceramic, which has a structure in which a plate-shaped electric field device with a plurality of electrodes is installed in a state where the plate or grid-like object and the electrodes are not in contact, and this is repeated as desired,
An ozonizer using ceramic, characterized in that a large number of fluid passages are provided inside a plate-shaped electric field device in a direction different from the axial direction of a corrugated plate or a grid-like object. (2) An ozonizer using a ceramic according to claim 1, wherein the ceramic dielectric is alumina porcelain, zirconia porcelain, or silicon nitride porcelain. (3) An ozonizer using ceramic according to claim 1 or 2, wherein the corrugated plate or grid-like material is an insulator made of synthetic resin, glass, or ceramic.