Spring heating catalytic filter tube filled with heat-conducting support body
By designing a spring-heated catalytic filter tube filled with a thermally conductive support, the problems of uneven heat distribution and inconsistent flow rates in traditional catalytic combustion are solved, enabling rapid heating of the catalyst and efficient catalytic reaction, thereby improving catalytic efficiency and conversion rate.
Patent Information
- Application Number
- CN202423026617.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Traditional catalytic combustion methods suffer from uneven heat distribution and inconsistent flow rate distribution. The small specific surface area of the catalyst support material leads to low catalyst efficiency, and the slow response of the heating method affects the efficiency of the catalytic reaction.
The catalytic filter tube is heated by a spring with a thermally conductive support. It includes a porous support, a catalyst layer, and a heating element. The support is made of materials such as foamed silicon carbide, the catalyst layer is a precious metal catalyst, and the heating element is a spring heating coil. The design is compact and the gas flow is uniform. The porous structure enables rapid and uniform heating and efficient catalytic reaction.
This technology enables rapid and uniform heating of the catalytic filter tube and efficient catalytic reaction, improving catalytic efficiency and conversion rate. It also ensures uniform gas flow, full contact between reactants and the catalyst layer, and enhances catalyst utilization and lifespan.
Smart Images
Figure CN223470212U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to filter pipe technical field especially is related to a filling heat conduction support body spring heating catalytic filter pipe. BACKGROUND
[0002] As an effective industrial waste gas treatment technology, the core of catalytic combustion is to improve the catalytic activity and heat management level of the catalyst. The traditional catalytic combustion method usually uses hot air to heat the catalyst, but there are problems of uneven heat distribution and inconsistent flow rate distribution, which leads to low catalyst efficiency; the specific surface area of the catalyst support material is small, which restricts the utilization rate and catalytic efficiency of the catalyst; the heating method has slow response speed, which cannot realize rapid heating of the catalyst, affecting the efficiency of the catalytic reaction. SUMMARY
[0003] The utility model solves the technical problems: in order to overcome the prior art catalytic combustion method usually uses hot air to heat the catalyst, but there are problems of uneven heat distribution and inconsistent flow rate distribution, which leads to low catalyst efficiency; the specific surface area of the catalyst support material is small, which restricts the utilization rate and catalytic efficiency of the catalyst; the heating method has slow response speed, which cannot realize rapid heating of the catalyst, affecting the efficiency of the catalytic reaction, provides a filling heat conduction support body spring heating catalytic filter pipe.
[0004] The utility model adopts the technical scheme that a filling heat conduction support body spring heating catalytic filter pipe, including:
[0005] The pipe body has a pipe cavity extending in the axial direction, and the two ends of the pipe body are respectively the inlet end and the outlet end;
[0006] The support body is filled in the pipe cavity of the pipe body, the outer wall surface of the support body and the inner wall surface of the pipe body are attached, the support body is a porous structure, and the support body is used for conducting heat and allowing fluid to pass through;
[0007] The catalytic layer is attached to the support body, and the catalytic layer is used to increase the reaction rate;
[0008] The heating element is arranged on the outer wall surface of the pipe body, and the heating element is used to heat the catalytic layer, so that the catalytic layer reaches the working temperature required for catalytic reaction. Through the design of the porous structure of the support body, the support body has very high thermal conductivity and large specific surface area, which can realize rapid and uniform heating of the entire catalytic filter pipe and efficient catalytic reaction, and improve the catalytic efficiency;
[0009] The entire catalytic filter pipe structure is compact, the gas flows uniformly, the high porosity and three-dimensional interconnected network structure of the support body are fully utilized, the full contact of the reactants and the catalytic layer is ensured, and the catalytic conversion rate is improved.
[0010] Further comprising that the support body material is foamed silicon carbide, foamed metal, silicon carbide particles or metal wire.
[0011] Further comprising that the catalytic layer material is noble metal catalyst or metal oxide.
[0012] Further comprising that the heating element is spring heating coil, and the heating element is arranged around the pipe body.
[0013] Further comprising that the axial length of the heating element is equal to the axial length of the support body.
[0014] Further comprising that the inlet connecting flange and the outlet connecting flange are arranged on the inlet end and the outlet end of the pipe body respectively.
[0015] The heat preservation layer is filled between the inlet connecting flange and the outlet connecting flange, and the heating element is arranged between the heat preservation layer and the outer wall surface of the pipe body.
[0016] In order to solve the problem that the gap between the support body and the pipe body leads to uneven fluid reaction and low heat conduction efficiency, the heat conduction adhesive layer is arranged between the inner wall surface of the support body and the pipe body.
[0017] Further comprising that the temperature sensor is arranged at the outlet end port of the pipe body, and the temperature sensor is fixedly connected with the inner wall surface of the pipe body.
[0018] The utility model discloses a kind of filled heat-conducting support body spring heating catalytic filter tubes,
[0019] Through the design of the support body of porous structure, the support body has very high thermal conductivity and large specific surface area, which can realize rapid and uniform heating and efficient catalytic reaction of the entire catalytic filter tube, and improve the catalytic efficiency.
[0020] The entire catalytic filter tube structure is compact, and the gas flows uniformly, which fully utilizes the high porosity and three-dimensional interconnected network structure of the support body, ensures the full contact of reactants and catalytic layer, and improves the catalytic conversion rate. BRIEF DESCRIPTION OF DRAWINGS
[0021] The utility model will be further described below in combination with drawings and examples.
[0022] Figure 1 It is the structure schematic diagram of the utility model;
[0023] Figure 2 It is the structure schematic diagram of the utility model Figure 1 Enlarged structure schematic diagram of A place in the utility model;
[0024] Figure 3 It is the structure schematic diagram of the utility model support body for silicon carbide particle state;
[0025] Figure 4 is the structural diagram of the support body of the utility model.
[0026] In the figure: 1, pipe body, 11, lumen, 12, inlet end, 13, outlet end, 14, inlet connecting flange, 15, outlet connecting flange;
[0027] 2, support body;
[0028] 3, catalytic layer;
[0029] 4, heating element;
[0030] 5, heat preservation layer;
[0031] 6, heat-conducting adhesive layer;
[0032] 7, temperature sensor. DETAILED DESCRIPTION
[0033] The utility model will be further explained in detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only the basic structure of the utility model is schematically shown, so it only shows the structure related to the utility model.
[0034] As Figure 1 is the structural diagram of the utility model, a kind of filling heat-conducting support body spring heating catalytic filter tube, comprising:
[0035] As Figure 1 , Figure 2 Indicated, pipe body 1, it has the lumen 11 extending along the axial direction, and the two ends of pipe body 1 are inlet end 12 and outlet end 13 respectively;Inlet end 12 and outlet end 13 of pipe body 1 are respectively arranged with inlet connecting flange 14 and outlet connecting flange 15 on both ends;
[0036] Inlet connecting flange 14 and outlet connecting flange 15 are filled with heat preservation layer 5, and heating element 4 is arranged between heat preservation layer 5 and the outer wall surface of pipe body 1.
[0037] The outlet end 13 port of pipe body 1 is arranged with temperature sensor 7, and temperature sensor 7 and the inner wall surface of pipe body 1 are fixedly connected.
[0038] As Figure 1 , Figure 2As shown, the support body 2 is filled in the tube cavity 11 of the tube body 1, and the outer wall surface of the support body 2 is in contact with the inner wall surface of the tube body 1. The support body 2 is a porous structure. The support body 2 is used to conduct heat and allow fluid to pass through. The material of the support body 2 is one or more of foamed silicon carbide, foamed metal, silicon carbide particles or metal wire; foamed silicon carbide is used as the support material of the catalyst. Its extremely high thermal conductivity and large specific surface area can achieve rapid and uniform heating and efficient catalytic reaction of the entire catalytic filter tube, thereby improving the catalytic efficiency; the entire catalytic filter tube has a compact structure and uniform gas flow, and makes full use of the high porosity and three-dimensional interconnected network structure of foamed silicon carbide to ensure sufficient contact between the reactants and the catalyst, thereby improving the catalytic conversion rate.
[0039] The average pore size of the foamed silicon carbide in the present application is 1 mm, and the porosity is 75% to 95%.
[0040] like Figure 1 、 Figure 2 As shown, the catalytic layer 3 is attached to the support 2. The catalytic layer 3 is used to increase the reaction rate. The catalytic layer 3 is made of a precious metal catalyst or a metal oxide. The specific metal catalyst can be one or more of a palladium catalyst or a platinum catalyst. The specific metal oxide can be one or more of manganese oxide or copper oxide. The high activity and good anti-poisoning performance of the metal catalyst are brought into play, further improving the catalytic efficiency and stability of the catalyst.
[0041] like Figure 1 、 Figure 2 As shown, a thermal conductive adhesive layer 6 is arranged between the support body 2 and the inner wall surface of the tube body 1. The thermal conductive adhesive layer 6 is used to fill the gap between the support body 2 and the tube body 1, on the one hand to increase the sealing performance, on the other hand to play a better heat conduction role.
[0042] like Figure 1 、 Figure 2 As shown, the heating element 4 is arranged on the outer wall surface of the tube body 1 for heat exchange. The heating element 4 is used to heat the catalyst layer 3 so that the catalyst layer 3 reaches the working temperature required for the catalytic reaction. The heating element 4 is a spring heating ring. The heating element 4 is arranged around the tube body 1. The axial length of the heating element 4 is equal to the axial length of the support body 2. The heating element 4 transfers heat to the foamed silicon carbide evenly, and the working temperature required for the catalytic reaction can be reached within just 2 minutes after startup, which solves the shortcomings of slow response and uneven heat distribution in traditional hot air heating methods. The use of electric heating instead of traditional hot air heating can more accurately control the heating temperature, avoid damage to the catalyst due to excessive temperature, and extend the service life of the catalyst.
[0043] Assembly of filter tube:
[0044] Before preparing the foamed silicon carbide, the organic foam block is cut into grooves according to the size of the pipe body 1, and then the foamed silicon carbide is molded or roll-extruded and coated with a silicon carbide layer, and then baked at high temperature to obtain the foamed silicon carbide filter pipe.
[0045] A layer of aluminum oxide is grown on the surface of the foamed silicon carbide by a liquid deposition method, and then a nano-palladium or platinum noble metal catalyst is loaded on the aluminum oxide by immersion and hydrogen reduction method. The introduction of aluminum oxide not only increases the specific surface area of the foamed silicon carbide, but also improves the dispersion of the noble metal catalyst.
[0046] The catalytic filter pipe uses a spring heating coil as a heating source, which is made of a high-temperature-resistant metal 316 or 310 and is tightly installed with the pipe body 1, which can quickly and uniformly transfer heat to the foamed silicon carbide. Within 2 minutes after starting, the entire catalytic filter pipe can reach a working temperature of 300-700℃, significantly improving the heating response speed.
[0047] The catalytic filter pipe uses a spring heating coil made of platinum-coated wire as a heating source, which is tightly installed with the foamed silicon carbide. Within 2 minutes after starting, the entire catalytic filter pipe can reach a working temperature of 500℃, significantly improving the heating response speed. A temperature sensor 7 is provided at the outlet end of the catalytic filter pipe for real-time monitoring of the temperature and control of the heating power.
[0048] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims
1. A filled heat conductive support spring heated catalytic filter tube, characterized in that, The application relates to a catalytic reactor, which comprises: a pipe body (1) with an axially extending pipe cavity (11), the pipe body (1) having an inlet end (12) and an outlet end (13) respectively; a support body (2) filled in the pipe cavity (11) of the pipe body (1), the outer wall surface of the support body (2) being attached to the inner wall surface of the pipe body (1), the support body (2) being a porous structure and being used for conducting heat and allowing fluid to pass through; a catalytic layer (3) attached to the support body (2), the catalytic layer (3) being used for increasing the reaction rate; a heating element (4) arranged on the outer wall surface of the pipe body (1) in a heat exchange mode, the heating element (4) being used for heating the catalytic layer (3) so that the catalytic layer (3) reaches the working temperature required by the catalytic reaction.
2. A filled thermally conductive support spring heated catalytic filter tube as defined in claim 1, wherein: The support body (2) is made of foamed silicon carbide, foamed metal, silicon carbide particles or metal wires.
3. A filled thermally conductive support spring heated catalytic filter tube as defined in claim 1, wherein: The catalytic layer (3) is made of noble metal catalyst or metal oxide, the noble metal catalyst being palladium catalyst or platinum catalyst, and the metal oxide being manganese oxide or copper oxide.
4. A filled thermally conductive support spring heated catalytic filter tube as defined in claim 1, wherein: The heating element (4) is a spring heating coil, which is arranged around the pipe body (1).
5. A filled thermally conductive support spring heated catalytic filter tube as defined in claim 1, wherein: The axial length of the heating element (4) is equal to the axial length of the support body (2).
6. A filled thermally conductive support spring heated catalytic filter tube as defined in claim 1, wherein: The inlet end (12) and the outlet end (13) of the pipe body (1) are respectively provided with an inlet connecting flange (14) and an outlet connecting flange (15). A heat preservation layer (5) is filled between the inlet connecting flange (14) and the outlet connecting flange (15), and the heating element (4) is arranged between the heat preservation layer (5) and the outer wall surface of the pipe body (1).
7. A filled thermally conductive support spring heated catalytic filter tube as defined in claim 1, wherein: A heat conducting adhesive layer (6) is arranged between the support body (2) and the inner wall surface of the pipe body (1).
8. A filled thermally conductive support spring heated catalytic filter tube as defined in claim 1, wherein: A temperature sensor (7) is arranged at the outlet end (13) of the pipe body (1), and the temperature sensor (7) is fixedly connected to the inner wall surface of the pipe body (1).