TWM518120U - Electrocatalytic structure - Google Patents

Description

Electrocatalyst structure

The present invention relates to an electric catalyst, which is characterized in that an electromotive force is generated between an anode layer and at least one cathode layer, and one of the exhaust gas flow channels flowing through the anode layer is oxidized by nitrogen, and is oxidized under aerobic and high temperature conditions. The nitrogen reaction is converted into nitrogen and oxygen, and at the same time, a gasified nitrogen is combined with oxygen to form an electric catalyst structure of the nitrogen dioxide gas.

Patent No. 5,401,372, entitled "ELECTROCHEMICAL CATALYTIC REDUCTION CELL FOR THE REDUCTION OF NO _X IN AN O ₂ -CONTAINING EXHAUST EMMISSION", which provides a nitrogen oxide electrochemical catalytic reduction battery for removing exhaust gas. The electrochemical catalyst is electrochemically reacted, and the vanadium pentoxide V ₂ O ₅ catalyst is used to catalyze the conversion of nitrogen oxides into nitrogen. In order to generate the operation, the power supply device must be additionally provided with a power supply, which not only enables the The electrochemical catalytic reduction battery increases the structural complexity, and the electrochemical catalytic reduction battery consumes energy.

According to another conventional patent of the Chinese Patent No. I474859 (Application No. 101135008), "Electrocatalyst Honeycomb for Controlling Exhaust Emissions", It is used for purifying an oxy-combusted combustion exhaust gas, and comprises a honeycomb structure, a solid oxide layer and a cathode layer. The honeycomb structure comprises an anode and a plurality of gas flow channels, the anode forming a skeleton of the honeycomb structure, the gas flow channel is formed in the skeleton for circulating the oxygen-enriched combustion exhaust gas; and the solid oxide layer coating the anode And having a tube wall facing the gas flow channel, the cathode layer is attached to the tube wall, wherein the anode has a reducing environment, and the cathode layer has an oxidizing environment. Accordingly, the reducing environment and the oxidizing environment generate an electromotive force between the anode and the cathode layer to drive the decomposition of nitrogen oxides in the oxy-combustion exhaust gas to the cathode layer. Due to the complicated structure of the such article, the manufacturing process and the raw materials of the required process are increased at the time of manufacture, thereby increasing the mass production cost.

According to another conventional application, No. I414343 (Application No. 099137174), "Electrochemical Catalyst Converter for Controlling Exhaust Emissions", and "ELECTROCHEMICAL-CATALYTIC CONVERTER FOR EXHAUST EMISSION CONTROL" (USA) No. 8684482 Application No. 13037693) for controlling exhaust gas emissions, comprising: at least one battery module, the battery module comprising a cathode portion, an anode portion, a membrane electrode assembly and a heating unit, the membrane electrode The group is located between the cathode portion and the anode portion, the heating unit is fitted to the battery module, the cathode portion includes an oxidation catalyst; a reducing gas input unit and a reducing gas output unit are respectively connected to the anode portion On both sides, as an input to the reducing gas when the battery module is operated And an output end; a reducing gas circulation pump connected to the reducing gas input unit and the reducing gas output unit respectively for performing a closed cycle of the reducing gas; and an exhaust gas input unit and an exhaust gas output unit respectively connected On both sides of the cathode portion, respectively, as an input end and an output end of the exhaust gas to be treated by the battery module; wherein the anode portion and the cathode portion have a different oxygen partial pressure, the heating unit Heating the membrane electrode assembly to an operating temperature, so that the reducing gas generates an electromotive force in the membrane electrode group; the nitrogen oxides in the exhaust gas are decomposed in the membrane electrode group to form nitrogen gas, and one of the exhaust gases is carbon oxide and hydrocarbon The compound and the granules are oxidized by the oxidizing catalyst to form carbon dioxide and water, thereby purifying the exhaust gas; in addition to the complicated equipment, the converter additionally provides a reducing gas system, thereby causing the apparatus to be bulky.

According to another conventional application of the Chinese Patent No. I422422 (Application No.: No. 100140823), the "Electrically Catalyst for Controlling Exhaust Emissions", and the US (Pub. No.) Notice No. 20130112552 (Application No.) No. 13362247) "ELECTROCATALYTIC TUBE OF ELECTROCHEMICAL-CATALYTIC CONVERTER FOR EXHAUST EMISSIONS CONTROL" patent for purifying an exhaust gas, the electric catalyst tube comprising a tube body, an anode layer and a cathode layer. The tube body is composed of a solid electrolyte layer, and includes a sealed space, an inner wall surface located in the sealed space, and an outer wall surface located outside the sealed space, the sealed space having a pressure of less than 1 atmosphere Still The anode layer and the cathode layer are respectively disposed on the inner wall surface of the solid electrolyte layer and the outer wall surface; and the patent "Improvement method of the exhaust gas purification reactor" of No. I491436 (Application No. 101148109) The exhaust gas purifying reactor may be an exhaust gas purifying reaction tube or an exhaust gas purifying reaction honeycomb, and the exhaust gas purifying reaction tube is manufactured by coating a tube body on an outer wall surface and an inner wall surface, respectively, and a cathode layer and a The anode layer is formed by forming a closed reducing environment in an internal passage of the tube; the exhaust gas purification reaction honeycomb is manufactured by placing a honeycomb body on a first inner wall surface of a first pipe and a first A second inner wall surface of the two pipes is respectively covered with a cathode layer and an anode layer, and is formed by forming a closed reducing environment in the second pipe, and the device must provide a closed reducing gas environment, and the exhaust gas cannot be Flow through all the flow channels, so the available area cannot be increased.

Many of the aforementioned kits are missing, which makes them greatly diminishing in practicality. This is a place for the industry and consumers to make breakthroughs. The creator takes this point as a consideration to create, and finally becomes one who can use the electric catalyst. An electromotive force is generated between the anode layer and the at least one cathode layer, and nitrogen oxide is passed through one of the exhaust gas flow channels of the anode layer. Under aerobic and high temperature conditions, the nitric oxide reaction is converted into nitrogen and oxygen, and at the same time, a vaporized nitrogen is also combined with oxygen. Combined with nitrogen dioxide gas (2NO→N ₂ +O ₂ and 2NO+O ₂ →2NO ₂ ), the process is completed, and the electrolyte slurry process and the electrolyte layer coating high-temperature sintering are eliminated, no additional power supply is required, and no additional reduction system is required. There is no need to provide a closed reducing gas environment, which can effectively save energy and reduce volume. The exhaust gas can flow through all the exhaust gas flow channels, increase the available area, save the process steps and the required process raw materials and reduce the production cost of the electric catalyst structure.

In order to solve the above-mentioned deficiencies of the prior art, the main purpose of the present invention is to provide an electric catalyst structure, which can generate an electromotive force between an anode layer and at least one cathode layer, and make one of the exhaust gas flow channels flowing through the anode layer. Nitric oxide, in the presence of oxygen and high temperature, the reaction of nitrogen monoxide is converted into nitrogen and oxygen, and a gasified nitrogen is also combined with oxygen to form a nitrogen dioxide gas, in order to overcome the difficulties in the prior art.

The secondary objective of the present invention is to provide an electrocatalyst structure that is free of the electrolyte slurry process and the electrolyte layer coating high temperature sintering, without the need for additional power supply, without the need for an additional reduction system, and without the need for an additional reducing gas environment.

Another object of the present invention is to provide an electric catalyst structure, which can effectively save energy and reduce volume, and the exhaust gas can flow through all the exhaust gas flow channels, increase the available area, save the process steps and the required process raw materials and reduce the production cost.

The problem to be solved by this creative is based on the patent of US Patent No. 5,401,372, "ELECTROCHEMICAL CATALYTIC REDUCTION CELL FOR THE REDUCTION OF NO _X IN AN O ₂ -CONTAINING EXHAUST EMMISSION", which provides for the removal of exhaust gas. Nitrogen oxide electrochemical catalytic reduction battery, which utilizes electrochemical catalyst electrochemical reaction, combined with vanadium pentoxide V ₂ O ₅ catalyst to assist nitrogen oxide to nitrogen, the device must be separately set in order to generate action The power supply device has a power supply, which not only increases the structural complexity of the electrochemical catalytic reduction battery, but also causes the electrochemical catalytic reduction battery to consume energy. According to another conventional application of the Chinese Patent No. I474859 (Application No. 101135008), the "Electrocatalyst Honeycomb for Controlling Exhaust Emissions" patent is used to purify an oxyfuel-burning exhaust gas, including a honeycomb structure and a solid oxide layer. And a cathode layer. The honeycomb structure comprises an anode and a plurality of gas flow channels, the anode forming a skeleton of the honeycomb structure, the gas flow channel is formed in the skeleton for circulating the oxygen-enriched combustion exhaust gas; and the solid oxide layer coating the anode And having a tube wall facing the gas flow channel, the cathode layer is attached to the tube wall, wherein the anode has a reducing environment, and the cathode layer has an oxidizing environment. Accordingly, the reducing environment and the oxidizing environment generate an electromotive force between the anode and the cathode layer to drive the decomposition of nitrogen oxides in the oxy-combustion exhaust gas to the cathode layer. Due to the complicated structure of the such article, the manufacturing process and the raw materials of the required process are increased at the time of manufacture, thereby increasing the mass production cost. According to another conventional application, No. I414343 (Application No. 099137174), "Electrochemical Catalyst Converter for Controlling Exhaust Emissions", and "ELECTROCHEMICAL-CATALYTIC CONVERTER FOR EXHAUST EMISSION CONTROL" (USA) No. 8684482 Application No. 13037693) for controlling exhaust gas emissions, comprising: at least one battery module, the battery module comprising a cathode portion, an anode portion, a membrane electrode assembly and a heating unit, the membrane electrode The group is located between the cathode portion and the anode portion, the heating unit is fitted to the battery module, the cathode portion includes an oxidation catalyst; a reducing gas input unit and a reducing gas output unit are respectively connected to the anode portion The two sides are respectively used as an input end and an output end of the reducing gas when the battery module operates; a reducing gas circulation pump is respectively connected to the reducing gas input unit and the reducing gas output unit for performing reducing gas a closed loop; and an exhaust gas input unit and an exhaust gas output unit are respectively connected to the two sides of the cathode portion to respectively serve as the battery module An input end of the exhaust gas and an output end; wherein the anode portion and the cathode portion have a different oxygen partial pressure, and the heating unit heats the membrane electrode assembly to an operating temperature, so that the reducing gas is The membrane electrode group generates an electromotive force; the nitrogen oxides in the exhaust gas undergo decomposition reaction at the membrane electrode group to form nitrogen gas, and one of the carbon oxides, hydrocarbons and particulate matter in the exhaust gas is oxidized by the oxidation catalyst to form carbon dioxide. And water, in order to purify the exhaust gas; in addition to the complicated equipment, the converter has to provide an additional reducing gas system, thus causing the device to be bulky. According to another conventional application of China No. II422422 (Application No.: No. 100140823), "Electrically Catalyst for Controlling Exhaust Emissions", and US Patent (Pub. No.) No. 20130112552 (Application No.) No. 13362247) "ELECTROCATALYTIC TUBE OF ELECTROCHEMICAL-CATALYTIC CONVERTER FOR EXHAUST EMISSIONS CONTROL" patent for purifying an exhaust gas, the electric catalyst tube comprising a tube body, an anode layer and a cathode layer. The tube body is composed of a solid electrolyte layer, and includes a sealed space, an inner wall surface located in the sealed space, and an outer wall surface located outside the sealed space, the sealed space having a pressure of less than 1 atmosphere a reducing environment; the anode layer and the cathode layer are respectively disposed on the inner wall surface of the solid electrolyte layer and the outer wall surface; and the method for manufacturing an exhaust gas purifying reactor of the Japanese Patent No. I491436 (Application No. 101148109) Patented, the exhaust gas purifying reactor may be an exhaust gas purifying reaction tube or an exhaust gas purifying reaction honeycomb, and the exhaust gas purifying reaction tube is manufactured by coating a tube body on an outer wall surface and an inner wall surface, respectively, and a cathode layer and An anode layer is formed by forming a closed reducing environment in an internal passage of the tube; the exhaust gas purifying reaction honeycomb is manufactured by placing a honeycomb body on a first inner wall surface of a first pipe and a A second inner wall surface of the second pipe is respectively coated with a cathode layer and an anode layer, and is formed by forming a closed reducing environment in the second pipe. The device must provide a closed reducing gas environment, and the exhaust gas cannot flow through all the flow channels, so the available area cannot be increased. Therefore, many of the aforementioned kits are missing, which makes them greatly reduced in practicality.

The technical means for solving the problem, in order to achieve the above purpose, the present invention provides an electrocatalyst structure comprising: an anode layer which is formed by a plurality of channels extending through the exhaust gas; at least one cathode layer is disposed at the anode The layer penetrates the inner wall of the exhaust gas flow passage.

Preferably, the shape of the anode layer of the present invention is in the shape of a honeycomb.

Preferably, the material of the cathode layer of the present invention is a samarium cobalt multi-metal oxide powder.

Preferably, the material of the anode layer of the present invention is nickel oxide powder, cerium oxide powder and zirconia powder.

In contrast to the prior art, by virtue of the structure, the present invention can utilize an anode layer and at least one cathode layer to generate an electromotive force and flow nitrogen oxide through one of the exhaust gas flow channels of the anode layer, and oxidize under aerobic and high temperature conditions. The nitrogen reaction is converted into nitrogen and oxygen, and a gasified nitrogen is also combined with oxygen to form a nitrogen dioxide gas (2NO→N ₂ +O ₂ and 2NO+O ₂ →2NO ₂ ), which is obtained, and the electrolyte slurry process and electrolyte layer coating are eliminated. With high temperature sintering, no additional power supply, no additional reduction system, no need to provide a closed reducing gas environment, which can effectively save energy and reduce volume. Exhaust gas can flow through all exhaust gas flow channels, increase available area, save process steps and It is necessary to process the raw materials and reduce the production cost, which is in line with the needs of progress, practicality and users.

1000‧‧‧Electrocatalyst

510‧‧‧anode layer

511‧‧‧Exhaust flow channel

600‧‧‧ cathode layer

The first picture: the three-dimensional exploded view of the creative electric catalyst.

The second picture: a three-dimensional combination of the creation of the electric catalyst.

The third picture: a sectional view of the combination of the creation of the electrocatalyst.

In order to understand the creative characteristics, content and advantages of this creation and the effects it can achieve, the author will use the creation of the creation and the details of the examples to explain the following, and the pattern used in the text, The subject matter is only for the purpose of illustration and supplementary instructions. It is not necessarily the true proportion and precise configuration after the implementation of the original creation. Therefore, the scope and configuration relationship of the attached drawings should not be limited to the scope of patents actually created. Explain first.

Please refer to the first, second and third figures, which are the three-dimensional exploded view of the creation of the electrocatalyst, the three-dimensional combination of the creation of the electrocatalyst, and the combined sectional view of the creation of the electrocatalyst. In a preferred embodiment, the electrocatalyst 1000 includes an anode layer 510 and at least one cathode layer 600.

The anode layer 510 is formed in a plurality of through-flow passages 511. In the embodiment, the anode layer 510 is in the shape of a honeycomb, but the invention is not limited thereto, except for the honeycomb shape described above. Other various shapes are within the scope of protection of the present invention. Further, in the present embodiment, the material of the anode layer 510 is nickel oxide powder, cerium oxide powder and zirconia powder.

The at least one cathode layer 600 is disposed on the anode layer 510 and penetrates the inner wall of the exhaust gas flow channel 511. The material of the cathode layer 600 is samarium cobalt multi-metal oxide powder in this embodiment.

In contrast to the prior art, by this structure, the present invention can utilize an anode layer 510 and at least one cathode layer 600 to generate an electromotive force, and flow through the anode layer 510, one of the exhaust gas flow channels 511, nitrogen oxide, in aerobic and high temperature. In this case, the nitric oxide reaction is converted into nitrogen and oxygen, and a gasified nitrogen is also combined with oxygen to form a nitrogen dioxide gas (2NO→N ₂ +O ₂ and 2NO+O ₂ →2NO ₂ ), and the electrolyte slurry is dispensed with. Process and electrolyte layer coating high temperature sintering, no additional power supply, no additional reduction system, no need to provide a closed reducing gas environment, effectively improve energy saving, reduce volume, exhaust gas can flow through all exhaust gas flow channels 511, increase available area It saves the process steps and the required process raw materials and reduces the production cost, which is in line with the needs of progress, practicality and users.

Looking at the above, we can see that this creation has achieved the desired effect under the previous technical structure, and it is not easy for people who are familiar with the art to think about it. Moreover, this creation has not been disclosed before the application, and it has Progressive and practical, it has already met the requirements for the creation of patents, and has submitted an application for creation according to law. You are requested to approve the creation of a patent application for this article, so as to encourage creation and to be sensible.

The embodiments described above are only for explaining the technical idea and characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement them according to the scope of the patent. That is, the equivalent changes or modifications made by the people in accordance with the spirit revealed by this creation should still be covered by the scope of the patent of this creation.

1000‧‧‧Electrocatalyst

510‧‧‧anode layer

511‧‧‧Exhaust flow channel

600‧‧‧ cathode layer

Claims (4)

An electrocatalyst structure comprising: an anode layer in a plurality of through-flow passages; and at least one cathode layer disposed on the anode layer and extending through the inner wall of the exhaust gas flow passage. The electrocatalyst structure of claim 1, wherein the anode layer has a honeycomb shape. The electrocatalyst structure according to claim 1, wherein the material of the cathode layer is samarium cobalt multi-metal oxide powder. The electrocatalyst structure according to claim 1, wherein the material of the anode layer is nickel oxide powder, cerium oxide powder and zirconia powder.