Catalyst heating device

Abstract

The invention provides a catalyst heating device which comprises a metal fin base body, a metal fin assembly and a heating piece, the metal fin assembly is arranged on the outer surface of the metal fin base body, and the heat conduction end of the heating piece is connected to the metal fin base body; the metal fin assembly comprises a plurality of metal fins which are evenly arranged at intervals, and a gas purification catalyst is attached to the outer surfaces of the metal fins. By arranging the metal fin group attached with the gas purification catalyst, the catalytic reaction area is increased, meanwhile, the heating speed is increased, the catalyst is helped to reach the ignition temperature more quickly, discharged gas is effectively purified, and environmental pollution is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of gas purification, and particularly relates to a catalyst heating device. Background Art

[0002] Traditional ceramic substrate catalyst carriers are all made of non-metallic materials such as alumina, activated carbon, and silica. Their heating method is usually indirect heat transfer, that is, after heating air by a heat source, the catalyst is heated by the high-temperature hot air. This method has a slow heating speed and high energy consumption. During the preheating process, a blower is usually required to drive, and it cannot be used immediately after startup. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, at least one embodiment of the present invention provides a catalyst heating device, which improves the heating speed and increases the catalytic area, so that the catalytic reaction can proceed more quickly and efficiently.

[0004] An embodiment of the present invention provides a catalyst heating device, including a metal fin matrix, a metal fin assembly, and a heating element. The metal fin assembly is disposed on the outer surface of the metal fin matrix, and the heat conduction end of the heating element is connected to the metal fin matrix; the metal fin assembly includes a plurality of metal fins arranged at uniform intervals, and a gas purification catalyst is attached to the outer surface of the metal fins.

[0005] In some embodiments, for the catalyst heating device provided by the present invention, the metal fin matrix has a block structure.

[0006] In some embodiments, for the catalyst heating device provided by the present invention, an installation groove matching the heat conduction end of the heating element is provided on one side of the metal fin matrix, and the heat conduction end of the heating element is installed in the installation groove.

[0007] In some embodiments, for the catalyst heating device provided by the present invention, the metal fin matrix includes an upper metal fin matrix and a lower metal fin matrix. The upper metal fin matrix is connected to the lower metal fin matrix, and the metal fin assemblies are respectively disposed on the outer surfaces of the upper metal fin matrix and the lower metal fin matrix; an upper installation groove is provided on one side of the upper metal fin matrix, and a lower installation groove corresponding to the upper installation groove is provided on one side of the lower metal fin matrix. The heat conduction end of the heating element matches the upper installation groove and the lower installation groove, and the heat conduction end of the heating element is installed in the upper installation groove and the lower installation groove.

[0008] In some embodiments, for the catalyst heating device provided by the present invention, the metal fin matrix has a hollow structure with openings at both ends.

[0009] In some embodiments, for the catalyst heating device provided by the present invention, the heat conduction end of the heating element is installed in the hollow body of the metal fin matrix.

[0010] In some embodiments, a catalyst heating device provided by the present invention has a metal fin matrix connected with a temperature sensor.

[0011] It can be seen that for a catalyst heating device according to an embodiment of the present invention, by providing a metal fin group attached with a gas purification catalyst, the catalytic reaction area is increased, and at the same time, the heating speed is also improved, helping the catalyst reach the ignition temperature faster, effectively purifying the discharged gas, and reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 It shows a first structural schematic diagram of a catalyst heating device in an embodiment of the present invention;

[0014] Figure 2 It shows a second structural schematic diagram of a catalyst heating device in an embodiment of the present invention;

[0015] Figure 3 It shows a third structural schematic diagram of a catalyst heating device in an embodiment of the present invention;

[0016] Figure 4 It shows a fourth structural schematic diagram of a catalyst heating device in an embodiment of the present invention.

[0017] The reference of the reference numerals corresponding to the drawings in the specification is as follows:

[0018] Metal fin matrix 1, upper metal fin matrix 11, lower metal fin matrix 12, metal fin assembly 2, heating element 3, temperature sensor 4, heating film 5, power supply lead 51. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0020] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. In this text, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0021] The inventor of this solution found that in the prior art, ceramic substrate catalyst carriers all use non-metallic materials such as alumina, activated carbon, and silica. Their heating method is usually indirect heat transfer, that is, after heating the air by a heat source, the catalyst is heated by the high-temperature hot air. This heating method has a slow heating speed and high energy consumption. During the preheating process, a blower is usually required to drive, and it cannot be used immediately after startup. The embodiments of the present invention provide the following solution:

[0022] As Figure 1 shown, the embodiments of the present invention provide a catalyst heating device, which includes a metal fin matrix 1, a metal fin assembly 2, and a heating element 3. The metal fin assembly 2 is disposed on the outer surface of the metal fin matrix 1, and the heat-conducting end of the heating element 3 is connected to the metal fin matrix 1. The metal fin assembly 2 includes a plurality of metal fins evenly spaced apart, and a gas purification catalyst is attached to the outer surface of the metal fins.

[0023] It should be noted that both the metal fin matrix 1 and the metal fin assembly 2 can be made of metal materials such as aluminum, copper, and steel, but are not limited to other metal materials than the above. The metal fins can be shovel teeth fins, machined fins, extruded fins, etc., but are not limited to other types of fins than the above. The metal fin assembly 2 has a large surface area and low wind resistance, so that more active sites can be exposed to the reactants, thereby improving the efficiency of the catalyst and enabling the reaction to proceed more quickly and efficiently. The heat generated by the heating element 3 is directly thermally conducted to the metal fin surface through the metal fin matrix 1. Under the condition of the same electrothermal power, the preheating time can be achieved, which is about 1 / 50 to 1 / 100 of an order of magnitude smaller than that of the traditional catalyst, and can help the catalyst reach the ignition temperature faster, so that it can be flexibly used in various application scenarios of VOCs gas treatment.

[0024] In addition, the metal carrier has good toughness and ductility, can withstand large external force impacts and vibrations. In some application scenarios with mechanical vibrations or pressure changes, compared with ceramic carriers, the metal carrier can better resist the vibrations generated by equipment operation and the impact of exhaust pressure, avoiding situations such as cracking and damage of the carrier, thereby ensuring the stability and service life of the catalyst. When the temperature changes rapidly, the metal carrier can also quickly conduct heat, making the temperature distribution inside the carrier more uniform and reducing the risk of cracking caused by thermal stress concentration.

[0025] In some embodiments, the metal fin substrate 1 has a block structure. One side of the metal fin substrate 1 is provided with a mounting groove matching the heat-conducting end of the heating element 3, and the heat-conducting end of the heating element 3 is installed in the mounting groove.

[0026] It should be noted that the shape of the metal fin substrate 1 can be a rectangular block, a square block, a trapezoidal block, etc., but is not limited to other shapes of the above-mentioned blocks and can be adjusted and designed according to the actual use scenario. The heating element 3 uses an electric heating tube. After the electric heating tube operates, heat is conducted to the metal fin substrate 1, and then conducted to the metal fin assembly 2, so that the catalyst can reach the ignition temperature faster.

[0027] In other embodiments, as Figure 2 shown, the heating element 3 uses a heating film 5. The heating film 5 is embedded in the metal fin substrate 1, and the power lead 51 extends outward from the metal fin substrate 1.

[0028] It should be noted that by conducting electricity to the power lead 51, the heating film 5 heats the metal fin substrate 1 and the metal fin assembly 2, reducing the volume of the entire device, making it more convenient for installation, and making the actual use scenarios more diverse.

[0029] In other embodiments, as Figure 3 shown, the metal fin substrate 1 includes an upper metal fin substrate 11 and a lower metal fin substrate 12. The upper metal fin substrate 11 is connected to the lower metal fin substrate 12, and the metal fin assemblies 2 are respectively arranged on the outer surfaces of the upper metal fin substrate 11 and the lower metal fin substrate 12. One side of the upper metal fin substrate 11 is provided with an upper mounting groove, and one side of the lower metal fin substrate 12 is provided with a lower mounting groove corresponding to the upper mounting groove. The heat-conducting end of the heating element 3 matches the upper mounting groove and the lower mounting groove, and the heat-conducting end of the heating element 3 is installed in the upper mounting groove and the lower mounting groove.

[0030] It should be noted that both the upper installation groove and the lower installation groove are semi-circular grooves. The upper metal fin base 11 and the lower metal fin base 12 clamp the electric heating tube through the upper installation groove and the lower installation groove. Both the upper metal fin base 11 and the lower metal fin base 12 are provided with metal fin assemblies 2, thereby further increasing the reaction area of the catalyst and enhancing the reaction efficiency of the catalyst.

[0031] In some other embodiments, such as Figure 4 shown, the heating element 3 adopts a heating film 5. The heating film 5 is clamped between the upper metal fin base 11 and the lower metal fin base 12, and the power lead 51 extends outward from the upper metal fin base 11 and the lower metal fin base 12.

[0032] In some embodiments, the metal fin base 1 has a hollow structure with openings at both ends, and the heat-conducting end of the heating element 3 is installed in the hollow of the metal fin base 1.

[0033] It should be noted that the shape of the metal fin base 1 can be a circular hollow body, a square hollow body, an elliptical hollow body, etc., but is not limited to other hollow body shapes of the above, and can be adjusted and designed according to the actual use scenario.

[0034] In some embodiments, a temperature sensor 4 is installed on the metal fin base 1, so that the reaction temperature of the catalyst can be monitored in real time, and the accuracy of the catalytic reaction can be further improved.

[0035] In summary, the embodiments of the present invention provide a catalyst heating device. By setting a metal fin group attached with a gas purification catalyst, the reaction area of the catalytic reaction is increased, and at the same time, the heating speed is also increased, helping the catalyst to reach the ignition temperature faster, effectively purifying the discharged gas, and reducing environmental pollution.

[0036] The above content is only the specific implementation manner of this application, and the protection scope of this application is not limited thereto. Those skilled in the art can make changes or substitutions within the technical scope disclosed in this application, and these changes or substitutions should be within the protection scope of this application.

[0037] Those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means being within the scope of the present invention and forming different embodiments.

[0038] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A catalyst heating device, characterized in that: The invention comprises a metal fin substrate (1), a metal fin assembly (2) and a heating element (3), wherein the metal fin assembly (2) is arranged on the outer surface of the metal fin substrate (1), and the heat-conducting end of the heating element (3) is connected to the metal fin substrate (1); the metal fin assembly (2) comprises a plurality of metal fins arranged at even intervals, and a gas purification catalyst is attached to the outer surface of the metal fins.

2. The catalyst heating device according to claim 1, characterized in that: The metal fin substrate (1) is in a block structure.

3. The catalyst heating device according to claim 2, characterized in that: A mounting groove matching the heat-conducting end of the heating element (3) is provided on one side of the metal fin substrate (1), and the heat-conducting end of the heating element (3) is mounted in the mounting groove.

4. The catalyst heating device according to claim 2, characterized in that: The metal fin substrate (1) comprises an upper metal fin substrate (11) and a lower metal fin substrate (12); the upper metal fin substrate (11) is connected to the lower metal fin substrate (12); the metal fin assembly (2) is respectively arranged on the outer surfaces of the upper metal fin substrate (11) and the lower metal fin substrate (12); an upper mounting groove is arranged on one side of the upper metal fin substrate (11); a lower mounting groove corresponding to the upper mounting groove is arranged on one side of the lower metal fin substrate (12); the heat conducting end of the heating element (3) matches the upper mounting groove and the lower mounting groove, and the heat conducting end of the heating element (3) is installed in the upper mounting groove and the lower mounting groove.

5. The catalyst heating device according to claim 1, characterized in that: The metal fin substrate (1) is a hollow structure with openings at both ends.

6. The catalyst heating device according to claim 5, characterized in that: The heat-conducting end of the heating element (3) is installed in the hollow body of the metal fin substrate (1).

7. The catalyst heating device according to claim 1, characterized in that: The metal fin substrate (1) is equipped with a temperature sensor (4).

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