Filter tube type catalytic combustion device
By combining a filter tube and a honeycomb catalyst in a tube-type catalytic combustion device, the problems of uneven airflow distribution and short circuits in the honeycomb catalyst are solved, achieving high catalytic efficiency and extended lifespan of the honeycomb catalyst.
Patent Information
- Application Number
- CN202423224760.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Traditional honeycomb catalysts suffer from uneven airflow distribution, airflow short-circuiting, and impurity blockage in catalytic combustion devices, making it difficult to achieve a catalytic efficiency of over 99.5%.
A filter tube catalytic combustion device is adopted, which combines filter tube catalyst and honeycomb catalyst. The micron-sized pores of the filter tube catalyst are used to promote uniform gas distribution. Combined with the backflushing component to remove impurities, it ensures that the airflow fully contacts the honeycomb catalyst. The airflow path is optimized through array arrangement and heat exchanger.
It achieves uniform airflow distribution and full contact, improves catalytic efficiency to 99.9%, extends the service life of honeycomb catalysts, and solves the problems of airflow short-circuiting and impurity blockage.
Smart Images
Figure CN223579930U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to waste gas treatment equipment technical field especially is concerned with a filter pipe type catalytic combustion device. BACKGROUND
[0002] Traditional catalytic combustion device usually adopts honeycomb porous honeycomb catalyst or granular honeycomb catalyst. These honeycomb catalysts have some problems in practical application, such as uneven air distribution, air short circuit, etc., which makes it difficult to achieve high efficiency level of more than 99.5% of catalytic efficiency. In order to solve the above problems, improve the efficiency of catalytic combustion, a new type of catalytic combustion device is needed.
[0003] The catalytic combustion equipment in the prior art often uses honeycomb honeycomb catalyst, waste gas passes through honeycomb hole, organic matter and oxygen around the waste gas are adsorbed by the inner wall of honeycomb hole, and carbon dioxide and water are generated by oxidation. This structure honeycomb catalyst is generally composed of multiple blocks placed in the catalytic combustion chamber, and due to the gap between each block, the air flow cannot be uniformly distributed, resulting in lower temperature or lower utilization rate of part of the honeycomb catalyst, and impurities will gradually block the narrow gap and hinder the flow of gas. SUMMARY
[0004] The technical problem to be solved by the utility model is that in order to overcome the problem of catalytic combustion equipment in the prior art, which often uses honeycomb honeycomb catalyst, the honeycomb catalyst is generally composed of multiple blocks placed in the catalytic combustion chamber, and due to the gap between each block, the air flow cannot be uniformly distributed, resulting in lower temperature or lower utilization rate of part of the honeycomb catalyst, and impurities will gradually block the narrow gap and hinder the flow of gas. A filter pipe type catalytic combustion device is provided.
[0005] The technical scheme adopted by the utility model to solve its technical problems is: a filter pipe type catalytic combustion device, comprising a reaction shell, a connecting pipe and a heat exchanger, the reaction shell is arranged with a first partition plate and a second partition plate, the first partition plate and the second partition plate sequentially divide the cavity in the reaction shell into a heating chamber, a catalytic chamber and a heat exchange chamber, the reaction shell is provided with an air outlet pipe, the input end of the air outlet pipe is communicated with the heat exchange chamber;
[0006] The first partition plate is provided with through holes for gas flow, a heater for heating the gas is arranged in the heating chamber, a plurality of catalytic mechanisms are arranged in the catalytic chamber, the catalytic mechanisms comprise filter tube catalysts and honeycomb catalysts, mounting holes are formed in the second partition plate, the mounting holes and the catalytic mechanisms are in one-to-one correspondence, the filter tube catalysts are used for filtering impurities in the gas, the filter tube catalysts are fixedly connected with the second partition plate, the output end of the filter tube catalyst covers the mounting hole corresponding to the filter tube catalyst, the honeycomb catalyst is arranged at the mounting hole corresponding to the honeycomb catalyst and covers the mounting hole corresponding to the honeycomb catalyst, the heat exchanger is used for gas flow, the shell side input end of the heat exchanger is located outside the reaction shell, the heat exchanger is located in the heat exchange chamber, the shell side output end of the heat exchanger is connected with the input end of the connecting pipe, the tube side input end of the heat exchanger is connected with the output end of the catalytic mechanism, the tube side output end of the heat exchanger is connected with the input end of the gas outlet pipe, and the output end of the connecting pipe is communicated with the heating chamber.
[0007] The filter tube catalyst and the honeycomb catalyst are combined, the gas flows through the micropores of the filter tube catalyst, the gas is fully contacted with the honeycomb catalyst, and the gas flow short circuit is prevented.
[0008] Further, the gas outlet pipe and the second partition plate are oppositely arranged, and the heat exchanger is located between the gas outlet pipe and the second partition plate.
[0009] Further, the catalytic mechanisms are arranged in an array.
[0010] In order to solve the problem that the gas flow is reduced due to the attachment of impurities on the filter tube catalyst, the catalytic mechanism further comprises a back blowing assembly for cleaning the impurities attached to the outer wall of the filter tube catalyst, the back blowing assembly comprises a blowing pipe, a connecting pipe and a gas pump, the blowing pipe is in one-to-one correspondence with the catalytic mechanism, the output end of the blowing pipe extends into the filter tube catalyst of the catalytic mechanism corresponding to the blowing pipe, the input end of the blowing pipe is connected with the output end of the connecting pipe, and the input end of the connecting pipe is connected with the input end of the gas pump.
[0011] Further, the heater is located at the through hole of the first partition plate.
[0012] The filter tube catalyst and the honeycomb catalyst are combined, the gas flows through the micropores of the filter tube catalyst, the gas is fully contacted with the honeycomb catalyst, and the gas flow short circuit is prevented. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model is further described below in combination with the drawings and examples.
[0014] Figure 1 It is the structure schematic diagram of the utility model;
[0015] Figure 2The utility model discloses Figure 1 The enlarged structural schematic diagram of A in the figure.
[0016] In the figure: 1, reaction shell, 11, first baffle, 111, through hole, 12, second baffle, 121, mounting hole, 13, heating chamber, 14, catalytic chamber, 15, heat exchange chamber, 16, gas outlet pipe, 2, connecting pipe, 3, heat exchanger, 4, heater, 5, catalytic mechanism, 51, filter pipe catalyst, 52, honeycomb catalyst, 53, back flushing assembly, 531, blowing pipe, 532, connecting gas pipe, 533, gas pump. DETAILED DESCRIPTION
[0017] The utility model will be explained in further detail now in combination with the drawings. These drawings are all simplified schematic diagrams, just with the schematic way to show the basic structure of the utility model, so it just shows the structure related to the utility model.
[0018] For example Figure 1 It is the structure schematic diagram of the utility model, a filter pipe type catalytic combustion device, including reaction shell 1, connecting pipe 2, heat exchanger 3, reaction shell 1 is arranged with first baffle 11 and second baffle 12, and first baffle 11 and second baffle 12 divide the cavity in reaction shell 1 into heating chamber 13, catalytic chamber 14 and heat exchange chamber 15 in turn, and reaction shell 1 is provided with gas outlet pipe 16, and the input end of gas outlet pipe 16 is communicated with heat exchange chamber 15;
[0019] Heat exchanger 3 is used for gas flow, and the shell side input end of heat exchanger 3 is located on the outside of reaction shell 1, the heat exchanger 3 is located in heat exchange chamber 15, the shell side output end of heat exchanger 3 is connected with the input end of connecting pipe 2, the tube side input end of heat exchanger 3 is butt jointed with the output end of catalytic mechanism 5, the tube side output end of heat exchanger 3 is butt jointed with the input end of gas outlet pipe 16, and the output end of connecting pipe 2 is communicated with heating chamber 13, that is to say, heat exchanger 3 disconnects heat exchange chamber 15, so that the gas after passing through catalytic mechanism 5 needs to flow through the tube side of heat exchanger 3 to flow out from gas outlet pipe 16, and the heat exchanger 3 has staggered baffle plates, and the baffle plates can increase the flow path of waste gas in the shell side and increase the heat exchange fullness degree;
[0020] First baffle 11 is provided with through hole 111 for gas flow, heating chamber 13 is arranged with heater 4 for heating gas, and catalytic chamber 14 is arranged with several catalytic mechanisms 5, for example Figure 2As shown, the catalytic mechanism 5 includes filter tube catalyst 51 and honeycomb catalyst 52, the second partition plate 12 is provided with mounting holes 121, the mounting holes 121 and the catalytic mechanism 5 are one-to-one corresponding, the filter tube catalyst 51 is used for filtering impurities in the gas, the filter tube catalyst 51 and the second partition plate 12 are fixedly connected, the output end of the filter tube catalyst 51 covers the mounting hole 121 corresponding to it, the honeycomb catalyst 52 is arranged at the mounting hole 121 corresponding to it, and the honeycomb catalyst 52 covers the mounting hole 121 corresponding to it. The device adopts the combination of filter tube catalyst 51 and honeycomb catalyst 52, uses the micron pore inside the filter tube catalyst 51, promotes the gas to fully contact the honeycomb catalyst 52, prevents the occurrence of gas flow short circuit, solves the problems of uneven gas flow distribution, gas flow short circuit and the like existing in the catalytic combustion device, and causes the catalytic efficiency to be difficult to reach more than 99.5%.
[0021] As shown in Figure 2 , the filter tube catalyst 51 has a micron pore structure, which can block harmful particle dust outside, better protect the activity of the honeycomb catalyst, and improve the service life of the honeycomb catalyst.
[0022] The heat exchanger 3 increases the residence time of the gas in the heat exchange chamber 15 when passing through the heat exchanger 3, preheats the entering exhaust gas, on the one hand utilizes the waste heat, and on the other hand can ensure that the reaction temperature of the exhaust gas reaches the optimal temperature.
[0023] As shown in Figure 1 , the gas outlet pipe 16 and the second partition plate 12 are arranged opposite to each other, and the heat exchanger 3 is located between the gas outlet pipe 16 and the second partition plate 12, which ensures that the gas in the heat exchange chamber 15 and the gas in the shell side of the heat exchanger 3 can be fully heat exchanged.
[0024] As shown in Figure 1 , 2 , the catalytic mechanism 5 is arranged in an array, and the array structure is formed by a plurality of filter tube catalysts 51, which is very beneficial to the gas flow distribution. A large gas flow can be divided into dozens of small gas flows, and after fully contacting the filter tube catalyst 51, the gas flow is discharged through the honeycomb catalyst 52, so that a high-efficiency purification effect of 99.9% is obtained.
[0025] As shown in Figure 1 , 2As shown, the catalytic mechanism 5 comprises a back flushing assembly 53 for cleaning the impurities attached to the outer wall of the filter tube catalyst 51, the back flushing assembly 53 comprises a blowing pipe 531, a connecting pipe 532 and a gas pump 533, the blowing pipe 531 and the catalytic mechanism 5 are in one-to-one correspondence, the output end of the blowing pipe 531 extends into the filter tube catalyst 51 of the corresponding catalytic mechanism 5, the input end of the blowing pipe 531 is connected with the output end of the connecting pipe 532, and the input end of the connecting pipe 532 is connected with the input end of the gas pump 533. The filter tube catalyst 51 is a new type of catalytic material which loads catalyst on the surface or inside of the filter tube, and combines the filtering function of the filter tube and the catalytic conversion function of the catalyst.
[0026] The heater 4 is located at the through hole 111 of the first partition plate 11, so that the gas entering the catalytic chamber 14 needs to flow through the heater 4, ensuring that the temperature of the gas reaches the optimal reaction temperature.
[0027] The reaction shell 1 is also provided with a pressure detector and a temperature control system.
[0028] In use, the heater 4 is started to raise the temperature of the gas in the heating chamber, and the exhaust gas is introduced into the heat exchanger 3, and when the exhaust gas flows in the shell side of the heat exchanger 3, it passes through the heat exchange chamber 15, and exchanges heat with the gas in the tube side of the heat exchanger 3 in the heat exchange chamber 15, and the preheating of the gas after the catalytic reaction is utilized, the preheating of the exhaust gas in the heat exchanger 3 is completed, the gas in the shell side of the heat exchanger 3 enters the heating chamber 13 through the connecting pipe 2 and is heated by the heater 4 to the optimal reaction temperature, the exhaust gas reaching the optimal reaction temperature enters the catalytic chamber 14 through the through hole 111 of the first partition plate 11, when the exhaust gas passes through the filter tube catalyst 51, the impurities in the exhaust gas are filtered out, and on the other hand, the gas flow is differentiated to form small gas flow, when the gas passes through the honeycomb catalyst 52, the flow speed is slowed down, so that the gas fully contacts the honeycomb catalyst 52 for reaction, and then is discharged into the heat exchange chamber 15, and after heat exchange with the exhaust gas in the heat exchanger 3, the exhaust gas is discharged from the exhaust pipe 16 for the next process.
[0029] Based on the above ideal embodiments of 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 content in the specification, and must be determined according to the scope of the claims.
Claims
1. A filter tube catalytic combustion device, characterized by, The utility model relates to a catalytic device for purifying gas, which comprises a reaction shell (1), a connecting pipe (2) and a heat exchanger (3), the reaction shell (1) is arranged with a first partition plate (11) and a second partition plate (12), the first partition plate (11) and the second partition plate (12) sequentially divide the cavity in the reaction shell (1) into a heating chamber (13), a catalytic chamber (14) and a heat exchange chamber (15), the reaction shell (1) is provided with an air outlet pipe (16), the input end of the air outlet pipe (16) is communicated with the heat exchange chamber (15); a through hole (111) for gas circulation is formed in the first partition plate (11), a heater (4) for heating gas is arranged in the heating chamber (13), a plurality of catalytic mechanisms (5) are arranged in the catalytic chamber (14), the catalytic mechanism (5) comprises a filter tube catalyst (51) and a honeycomb catalyst (52), a mounting hole (121) is formed in the second partition plate (12), the mounting hole (121) corresponds to the catalytic mechanism (5) one by one, the filter tube catalyst (51) is used for filtering impurities in the gas, the filter tube catalyst (51) is fixedly connected with the second partition plate (12), the output end of the filter tube catalyst (51) is covered by the mounting hole (121) corresponding thereto, the honeycomb catalyst (52) is arranged at the mounting hole (121) corresponding thereto, and the honeycomb catalyst (52) covers the mounting hole (121) corresponding thereto; the heat exchanger (3) is used for gas flow, the shell side input end of the heat exchanger (3) is located outside the reaction shell (1), the heat exchanger (3) is located in the heat exchange chamber (15), the shell side output end of the heat exchanger (3) is connected with the input end of the connecting pipe (2), the tube side input end of the heat exchanger (3) is butt jointed with the output end of the catalytic mechanism (5), the tube side output end of the heat exchanger (3) is butt jointed with the input end of the air outlet pipe (16), and the output end of the connecting pipe (2) is communicated with the heating chamber (13).
2. A filter cartridge catalytic combustion device as defined in claim 1 wherein: The air outlet pipe (16) and the second partition plate (12) are oppositely arranged, and the heat exchanger (3) is located between the air outlet pipe (16) and the second partition plate (12).
3. A filter cartridge catalytic combustion device as defined in claim 1 wherein: The catalytic mechanisms (5) are arranged in an array.
4. A filter cartridge catalytic combustion device as defined in claim 1 wherein: The catalytic mechanism (5) comprises a back blowing assembly (53) for cleaning impurities attached to the outer wall of the filter tube catalyst (51), the back blowing assembly (53) comprises a blowing pipe (531), a connecting gas pipe (532) and a gas pump (533), the blowing pipe (531) corresponds to the catalytic mechanism (5) one by one, the output end of the blowing pipe (531) extends into the filter tube catalyst (51) of the catalytic mechanism (5) corresponding thereto, the input end of the blowing pipe (531) is connected with the output end of the connecting gas pipe (532), and the input end of the connecting gas pipe (532) is connected with the input end of the gas pump (533).
5. A filter catalytic combustion device as claimed in claim 1, characterized in that: The heater (4) is located at the through hole (111) of the first partition plate (11).