Catalytic oxidation equipment

Abstract

The invention provides catalytic oxidation equipment. The catalytic oxidation equipment is beneficial to improving the accuracy of temperature control when the temperature tends to decrease. The catalytic oxidation equipment comprises a catalytic reaction chamber, an electric heating part capable of heating the catalytic reaction chamber and a heat storage phase change part located in the catalytic reaction chamber, and when the temperature of the heat storage phase change part is lower than a first preset value, the heat storage phase change part deforms to switch on a heating loop of the electric heating part.

Description

Technical Field

[0001] This application relates to the technical field of flue gas treatment equipment, and specifically relates to catalytic oxidation equipment. Background Art

[0002] One way to treat flue gas is to introduce the flue gas into a catalytic oxidation device, and the flue gas is treated through a catalytic oxidation reaction. The catalytic oxidation device has the characteristics of simple structure and convenient operation. However, when the temperature and concentration of the flue gas fluctuate violently, the temperature in the catalytic reaction zone will also fluctuate abnormally, and the temperature control stability is poor, thus affecting the effect of the catalytic reaction.

[0003] Currently, for the measures when the temperature in the catalytic reaction zone drops, an electric heating component is set, and the temperature in the catalytic reaction zone is detected. When the temperature is low, the electric heating is controlled to start, and vice versa, the electric heating is controlled to turn off. However, due to the lag of temperature monitoring and electric heating, it is difficult to accurately control the temperature. Summary of the Invention

[0004] The purpose of this application is to provide a catalytic oxidation device, which is beneficial to improving the accuracy of temperature control when the temperature has an upward or downward trend.

[0005] To solve the above technical problems, the catalytic oxidation device of this application includes a catalytic reaction chamber, an electric heating component capable of heating the catalytic reaction chamber, and a heat storage phase change component located in the catalytic reaction chamber. When the temperature of the heat storage phase change component is lower than a first preset value, the heat storage phase change component deforms to connect the heating circuit of the electric heating component.

[0006] Optionally, the catalytic oxidation device is provided with a relay for controlling the on / off of the heating circuit. The heat storage phase change component deforms to contact or disengage from the contact of the relay to control the on / off of the heating circuit.

[0007] Optionally, the heat storage phase change component includes a plurality of spheres. The sphere includes a spherical metal shell, and the metal shell is filled with a heat storage phase change material;

[0008] The electric heating component is provided with at least one groove, and at least part of the contact is located in the groove; when the temperature is lower than the first preset value, at least one of the spheres shrinks and falls into one of the grooves and contacts the contact to connect the heating circuit.

[0009] Optionally, the spherical surface of the sphere is equally divided into a plurality of equal division surfaces. Each equal division surface includes a middle part and a peripheral part surrounding the middle part. The peripheral part includes convex edges and concave parts, and the convex edges and the concave parts are alternately distributed in a direction approaching the middle part.

[0010] Optionally, the equal division surface is one-eighth of the spherical surface.

[0011] Optionally, at least one catalyst layer is disposed in the catalytic reaction chamber, and the heat storage phase change component is disposed on at least one side in the thickness direction of the catalyst layer, and the heat storage phase change component and the catalyst layer are arranged in a stacked manner.

[0012] Optionally, the electric heating plate is disposed on the side of the heat storage phase change component.

[0013] Optionally, the heat storage phase change component includes a first housing filled with a heat storage phase change material, and the contact is connected to the first housing; when the temperature is lower than the first preset value, the heat storage phase change material deforms to disengage from the contact to turn on the heating circuit of the electric heating component.

[0014] Optionally, a catalyst layer is disposed in the catalytic reaction chamber;

[0015] The heat storage phase change component further includes a plurality of second housings, each of the second housings is filled with a heat storage phase change material, the plurality of second housings are embedded in the catalyst layer, and each of the second housings communicates with the first housing.

[0016] Optionally, the electric heating component includes an electric heating plate, and at least part of the wall of the electric heating plate is part of the wall of the catalytic reaction chamber.

[0017] Optionally, the catalytic oxidation device includes a first air outlet channel and a second air outlet channel, a heat dissipation component is disposed in the first air outlet channel, and the heat dissipation component is connected to the catalytic reaction chamber;

[0018] When the temperature is higher than the second preset value, the catalytic reaction chamber communicates with the first air outlet channel;

[0019] When the temperature is not higher than the second preset value, the catalytic reaction chamber communicates with the second air outlet channel.

[0020] Optionally, the catalytic oxidation device further includes an adjusting component, and the heat storage phase change component is connected to the adjusting component;

[0021] When the temperature is higher than the second preset value, the heat storage phase change component deforms to drive the adjusting component to act to close the second air outlet channel and open the first air outlet channel;

[0022] When the temperature is not higher than the second preset value, the heat storage phase change component deforms to drive the adjusting component to act to open the second air outlet channel and close the first air outlet channel.

[0023] Optionally, the adjusting member includes a connecting rod, a first sealing plate, and a second sealing plate. The first sealing plate is used to control the opening and closing of the first air outlet channel, and the second sealing plate is used to control the opening and closing of the second air outlet channel;

[0024] The first sealing plate is rotatably connected in the first air outlet channel, the second sealing plate is rotatably connected in the second air outlet channel, and both the first sealing plate and the second sealing plate are rotatably connected to the connecting rod;

[0025] The heat storage phase change member drives the connecting rod to move, and the connecting rod drives the first sealing plate and the second sealing plate to rotate, so as to open and close the corresponding first air outlet channel and second air outlet channel.

[0026] Optionally, the catalytic oxidation device further includes a transmission mechanism. The transmission mechanism includes a rack, a gear, a first transmission rod, and a second transmission rod. The deformation of the heat storage phase change member drives the rack to move, so as to drive the gear to rotate. The gear drives the first transmission rod to swing, and the first transmission rod drives the second transmission rod to translate. The second transmission rod is directly or indirectly connected to the connecting rod to drive the connecting rod to move.

[0027] Optionally, the heat dissipation member includes a plurality of pipes, and the pipes are communicated with the heat storage phase change member. The heat storage phase change material in the heat storage phase change member can flow into the pipes.

[0028] The catalytic oxidation device in the technical solution of the present application includes a heat storage phase change member, and the on-off of the electric heating plate member is controlled by the heat storage phase change member. On the one hand, the heat storage phase change member can absorb and release heat based on phase change, which is beneficial to maintaining the temperature stability in the catalytic reaction chamber; on the other hand, if the heat is too little due to the change of flue gas temperature or concentration, and the latent heat release of the heat storage phase change member is difficult to maintain the temperature stability, the heat storage phase change member will deform during phase change and automatically connect the electric heating member, so as to continue to maintain the temperature stability. It can be seen that this technical solution is beneficial to improving the accuracy of temperature control when the temperature drops. When the temperature rises, the heat storage phase change member can absorb heat, which is beneficial to maintaining the temperature stability in the catalytic reaction zone. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of the catalytic oxidation device in the first embodiment of the present application;

[0030] Figure 2 is Figure 1 a cross-sectional view taken along the A-A direction in

[0031] Figure 3 is Figure 1Schematic diagram of the structure where a sphere in the intermediate heat storage phase change component fits into the groove of the electric heating component;

[0032] Figure 4 For Figure 3 Left view;

[0033] Figure 5 For Figure 2 Schematic diagram of the structure of the sphere in the intermediate heat storage phase change component;

[0034] Figure 6 For Figure 5 Enlarged schematic diagram of part C in

[0035] Figure 7 For Figure 5 Schematic diagram of the structure of an equidistant plane in

[0036] Figure 8 For Figure 1 Cross-sectional schematic diagram along the B - B direction in

[0037] Figure 9 For Figure 8 Schematic diagram of the structure when the air outlet channel is in the first state in

[0038] Figure 10 For Figure 8 Schematic diagram of the structure when the air outlet channel is in the second state in

[0039] Figure 11 For Figure 1 Enlarged schematic diagram of part D in

[0040] Figure 12 For Figure 11 Left view, the rack is in the first position;

[0041] Figure 13 For Figure 12 Schematic diagram when the rack is in the second position in

[0042] Figure 14 Schematic diagram of the structure of the catalytic oxidation device in the second embodiment of the present application;

[0043] Figure 15 For Figure 14 Cross-sectional schematic diagram along the F - F direction in

[0044] Figure 16 For Figure 15 Schematic diagram of the structure of the intermediate heat storage phase change component, the intermediate heat storage phase change component is in the first state;

[0045] Figure 17 For Figure 16 Schematic diagram of the structure when the intermediate heat storage phase change component is in the second state;

[0046] Figure 18 is Figure 15 a schematic structural diagram of the second housing and the heat storage phase change material therein;

[0047] Figure 19 is Figure 14 a schematic diagram of the heat storage phase change component taken along the E-E section;

[0048] Figure 20 is Figure 19 a schematic structural diagram of the heat dissipation component.

[0049] The reference numerals in the figure are explained as follows:

[0050] 10 - heat exchange device;

[0051] 20 - intake passage;

[0052] 30 - catalyst layer;

[0053] 40 - catalytic reaction chamber;

[0054] 50 - outlet passage; 501 - first outlet passage; 502 - second outlet passage;

[0055] 60 - heat storage phase change component; 601 - sphere; 6011 - equidivision plane; 60111 - peripheral part; 60111a - convex rib; 60111b - concave part; 60112 - middle part; 602 - heat storage phase change material; 603 - second housing; 604 - first housing;

[0056] 70 - support part;

[0057] 80 - heat dissipation component; 801 - heat dissipation plate; 802 - pipe;

[0058] 90 - electric heating component; 901 - electric heating plate; 901a - groove;

[0059] 100 - adjusting component; 1001 - first sealing plate; 1002 - second sealing plate; 1003 - connecting rod; 1004 - fixing plate;

[0060] 110 - transmission mechanism; 1101 - rack plate; 1101a - first guide groove; 1102 - rack; 1103 - gear; 1104 - guide rod; 1105 - first transmission rod; 1105a - second guide groove; 1106 - second transmission rod; 1107 - piston rod; 1108 - piston;

[0061] 120 - contact;

[0062] 130 - push-pull rod. Specific embodiments

[0063] To enable those skilled in the art to better understand the technical solution of this application, the following further elaborates on this application in conjunction with the accompanying drawings and specific embodiments.

[0064] In the embodiments of this application, terms such as "first" and "second" are only used to distinguish the same or similar structures, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. To enable those skilled in the art to better understand the solution of this application, the following further elaborates on this application in conjunction with the accompanying drawings and specific implementation manners.

[0065] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the catalytic oxidation equipment in the first embodiment of this application.

[0066] The catalytic oxidation equipment in this embodiment includes a catalytic reaction chamber 40. A catalyst layer 30 is arranged in the catalytic reaction chamber 40. After the flue gas GAS enters the catalytic reaction chamber 40, it can come into contact with the catalyst in the catalyst layer 30 and react to treat the flue gas. In this embodiment, the flue gas undergoes flameless combustion oxidation in the catalyst layer 30 to release heat. Multiple catalyst layers 30 can be distributed along the height direction H of the catalytic reaction chamber 40, Figure 1 specifically two layers in

[0067] As Figure 2 shown, Figure 2 is Figure 1 a schematic cross-sectional view along the A-A direction in

[0068] showing the structure of the catalytic reaction chamber 40. The catalytic oxidation equipment in this embodiment further includes an electric heating component 90. The electric heating component 90 can heat the catalytic reaction chamber 40. In this embodiment, the electric heating component 90 includes an electric heating plate 901. The electric heating plate 901 can directly serve as a part of the wall of the catalytic reaction chamber 40, that is, as a part of the catalytic reaction chamber 40. In this way, after the electric heating plate 901 is energized and generates heat, it can more directly heat the catalytic reaction chamber 40. It can be understood that the electric heating plate 901 is independently arranged relative to the catalytic reaction chamber 40. For example, contacting the wall of the catalytic reaction chamber 40 can also achieve the purpose of heating, and it can be arranged outside the catalytic reaction chamber 40 or inside the catalytic reaction chamber 40.

[0069] It should be noted that the catalytic oxidation device in this embodiment further includes a heat storage phase change component 60, and the heat storage phase change component 60 is located in the catalytic reaction chamber 40. The heat storage phase change component 60 includes a heat storage phase change material, and the heat storage phase change material is, for example, metal, molten salt, etc. A heat storage phase change material refers to a substance that changes its physical state without changing its temperature and can provide latent heat. The process of changing the physical state is called a phase change process, and the heat storage phase change material absorbs or releases latent heat during the phase change process. The heat storage phase change material in this embodiment can be selected as a material with a relatively high melting heat value, and can be selected according to the temperature control requirements of the catalytic reaction chamber 40. For example, for flue gas containing VOCs (Volatile Organic Compounds), a catalytic reaction temperature above 400°C is required, then the heat storage phase change material can use metallic zinc with a melting point of about 420°C. It has a large phase change latent heat and can absorb surplus heat or release heat to supplement the catalytic reaction chamber 40, thereby facilitating the realization of a constant temperature in the catalytic reaction zone, that is, the temperature of the catalytic reaction chamber 40 can be maintained at about 420°C.

[0070] When the temperature of the heat storage phase change component 60 in this embodiment is lower than the first preset value, the heat storage phase change component 60 can connect to the heating circuit of the electric heating component 90. The first preset value can be a range value. The heat storage phase change component 60 includes a heat storage phase change material, and the heat storage phase change material undergoes a phase change when the temperature around it changes. For example, the heat storage phase change material changes from a solid state to a liquid state to absorb heat and its volume will expand, and vice versa, it will release latent heat and its volume will shrink. In this way, the heat storage phase change component 60 will undergo a phase change when the temperature around it changes, and correspondingly generate a deformation. The heating circuit of the electric heating component 90 is controlled by the contact 120 of the relay to be turned on or off. Specifically, the heat storage phase change component 60 controls the connection or disconnection of the heating circuit of the electric heating component 90 by contacting or separating from the contact 120 through deformation, thereby controlling the electric heating component 90 to start heating or stop heating by turning off.

[0071] Specifically, continue to refer to Figure 3 and Figure 4 understand, Figure 3 For Figure 1 the schematic structural diagram of the cooperation between a sphere 601 in the heat storage phase change component 60 and the groove 901a of the electric heating component 90; Figure 4 For Figure 3 the left view of

[0072] The heat storage phase change component 60 in this embodiment includes multiple spheres 601. The spheres 601 are spherical metal shells, and the heat storage phase change component 60 further includes a heat storage phase change material located inside the spheres 601. The electric heating plate 901 of the electric heating component 90 can be provided with at least one groove 901a. The heating circuit of the electric heating component 90 can be controlled to be turned on and off by a relay. A pair of contacts 120 of the relay are arranged in each groove 901a, and the contacts 120 can be exposed on the surface of the groove wall of the groove 901a.

[0073] In this way, when the temperature is lower than the first preset value, the spheres 601 will shrink due to phase change, and some of the spheres 601 will contact the electric heating plate 901. After the volume of the spheres 601 shrinks, at least one of the spheres 601 can fall into a groove 901a after shrinking and contact a pair of contacts 120 in the groove 901a, thereby closing this pair of contacts 120. Then the relay can be closed. At this time, it can be set that after the relay is closed, the heating circuit is also in a conducting state, and electric heating can be carried out.

[0074] Specifically, initially, the catalytic reaction chamber 40 is in a normal operating state, and the heat storage phase change material filled in the spheres 601 is in an intermediate state of phase change melting. When the temperature or concentration of the incoming flue gas fluctuates violently, resulting in a large change in the heat of the catalytic reaction chamber 40, the heat storage phase change material in the spheres 601 will exchange heat with the flue gas in the catalytic reaction chamber 40 and undergo a phase change, resulting in a volume change. The volume change is as follows: When the temperature of the heat storage phase change material is lower than its melting point, the diameter of the sphere 601 is assumed to be D; when the temperature of the heat storage phase change material is equal to the melting point and the phase change process has developed a little, the diameter of the sphere 601 is assumed to be D1; when the phase change process has developed more, the diameter of the sphere 601 is assumed to be D2, and at this time the heat storage phase change material is in an intermediate state of phase change melting; when the phase change process has developed more than half, the diameter of the sphere 601 is assumed to be D3; when the phase change process is about to be completed, the diameter of the sphere 601 is assumed to be D4. Then, during the above volume change process, the diameter sizes satisfy: D < D1 < D2 < D3 < D4.

[0075] When the heat in the catalytic reaction chamber 40 is too low due to factors such as a sudden drop in flue gas temperature or concentration, the temperature of the catalytic reaction chamber 40 tends to decrease. The heat storage phase change material in the sphere 601 in the solid-liquid phase change melting intermediate state (with a diameter approximately at D2) will transform into a solid state, and the diameter of the sphere 601 will shrink to D1. If the released latent heat is still not enough to maintain the stability of the surrounding temperature, the diameter of the sphere 601 will continue to change from D1 to D, that is, the heat storage phase change material will completely transform into a solid state, and then a temperature change will occur. In this embodiment, when the diameter shrinks to D1, the sphere 601 can fall into the groove 901a and contact a pair of contacts 120, which can trigger the relay and start the heating of the electric heating component 90. The heat storage phase change material stops completely transforming into a solid state, that is, it will not continue to release latent heat and shrink further, so the temperature will not decrease. It is heated until the diameter of the sphere 601 expands to D2. At this time, the diameter of the sphere 601 is larger than the diameter of the groove 901a, and the sphere 601 disengages from the groove 901a, and the electric heating is turned off again. It can be seen that the method in this embodiment enables the heat storage phase change material in the sphere 601 to be roughly maintained in the phase change melting intermediate state, that is, basically in the state with a diameter of D2, and the change range does not exceed D1 - D3. The above first preset value of the temperature, that is, the temperature range of the surrounding temperature corresponding to the heat storage phase change material being at D1. It can be seen that throughout the above process, the heat storage phase change material in the sphere 601 always remains in the phase change melting intermediate state, and the temperature of the heat storage phase change material is relatively stable, which is conducive to maintaining the temperature stability of the catalytic reaction chamber 40.

[0076] Please continue to refer to Figures 5 to 7 Understand, Figure 5 For Figure 2 the schematic structural diagram of the sphere 601 in the heat storage phase change component 60; Figure 6 For Figure 5 the enlarged schematic diagram of part C in Figure 7 For Figure 5 the schematic structural diagram of an equidistant plane 6011 in

[0077] In this embodiment, the spherical surface of the sphere 601 can be equally divided into a plurality of equal division surfaces 6011. Each equal division surface 6011 includes a middle part 60112 and a peripheral part 60111 surrounding the middle part 60112. The peripheral part 60111 includes convex ribs 60111a and concave parts 60111b, and the convex ribs 60111a and the concave parts 60111b are alternately distributed in a direction close to the middle part 60112. The middle part 60112 is a relatively flat spherical surface, and the middle part 60111 has an uneven design. The alternating distribution of the convex ribs 60111a and the concave parts 60111b forms a corrugated elastic structure, that is, similar to forming an expansion joint structure. In this way, when controlling the phase change volume change, it is convenient for the equal division surface 6011 to expand and contract in a predetermined direction. Moreover, the equal division design can ensure that the sphere 601 expands and contracts equally in the X, Y, and Z axes (the X-axis, Y-axis, and Z-axis are perpendicular to each other) during the expansion and contraction process, realizing an approximately equal-diameter change at each position of the sphere 601, so as to facilitate ensuring that the sphere 601 can deform stably, so as to smoothly exit from or enter into the groove 901a as expected to contact the contact 120 of the relay.

[0078] Figure 5 The sphere 601 in it is specifically designed with eight equal divisions, that is, the equal division surface 6011 is one-eighth of the spherical surface of the sphere. Projecting from the center of the one-eighth equal division surface to the center of the sphere 601, the projection surface is triangular, and the peripheral part 60111 is also roughly a triangular ring structure. It can be seen that theoretically, the more the number of equal divisions, the better the uniformity of deformation control. However, with the eight-equal-division design, while ensuring stable deformation, it also takes into account a relatively simple processing technology.

[0079] In this embodiment, the metal shell of the sphere 601 can be made of a high-temperature nickel alloy material of GH2747 / 747 with stable physical properties in the range of 1200°C to 1250°C for a long time. It can be made into two hemispherical shells by stamping or die-casting. The heat storage phase change material can be filled into the hemispherical shell and then butt-sealed. It can also be that after the two hemispherical shells are butt-sealed, a filling port is reserved on the metal shell, and the heat storage phase change material is loaded from the filling port and then sealed. This method is conducive to processing the sphere 601 with the required shape and structure.

[0080] In addition, at least one side of the catalyst layer 30 in the thickness direction thereof is provided with a heat storage phase change component 60, and the heat storage phase change component 60 and the catalyst layer 30 are arranged in a stacked manner. With such an arrangement, the contact area between the heat storage phase change component 60 and the catalyst layer 30 is relatively large. When the heat storage phase change component 60 is provided on either side of the catalyst layer 30, it is equivalent to clamping the catalyst layer 30 between two heat storage phase change components 60, and the heat storage phase change component 60 can maintain a constant temperature, so that the temperature fluctuation of the catalyst layer 30 can be relatively small, and the temperature can always be within the required catalytic reaction temperature range. Moreover, the relatively large contact area with the catalyst layer 30 is also more conducive to the heat storage phase change component 60 more accurately and timely sensing the temperature change of the catalyst layer 30, so as to timely feedback this temperature change to the electric heating component 90. Figure 2 In this embodiment, a layer of heat storage phase change component 60 is provided on both the upper side and the lower side of the catalyst layer 30 in the height direction H. In addition, a support portion 70 is further provided, and the support portion 70 is located below the heat storage phase change component 60 and the catalyst layer 30 to support the heat storage phase change component 60 and the catalyst layer 30.

[0081] As Figure 2 shown, the electric heating plate 901 of the electric heating component 90 in this embodiment is provided on the side of the heat storage phase change component 60. In this way, it is convenient for the groove 901a of the electric heating plate 901 to be in contact and cooperate with the sphere 601 on the side of the heat storage phase change component 60. The electric heating plate 901 of the electric heating component 90 can be arranged to surround the heat storage phase change component 60, for example, it is an annular plate structure. Of course, it can be one or more electric heating plates 901 distributed along the circumference.

[0082] Please continue to refer to Figures 8 to 10 shown, Figure 8 is Figure 1 the cross-sectional view along the B-B direction in this embodiment; Figure 9 is Figure 8 the structural schematic diagram of the gas outlet channel 50 in the first state in this embodiment; Figure 10 is Figure 8 the structural schematic diagram of the gas outlet channel 50 in the second state in this embodiment.

[0083] The air outlet channel 50 of the catalytic oxidation device in this embodiment includes a first air outlet channel 501 and a second air outlet channel 502. The air outlet channel 50 can be a main channel. A partition is arranged in the air outlet channel 50 to separate the first air outlet channel 501 and the second air outlet channel 502, that is, the first air outlet channel 501 and the second air outlet channel 502 share a part of the channel wall. Or, the first air outlet channel 501 and the second air outlet channel 502 can be independent channel structures. Among them, a heat dissipation component 80 is arranged in the first air outlet channel 501, and the heat dissipation component 80 is connected to the catalytic reaction chamber 40. The second air outlet channel 502 can be heat-insulated, and the first air outlet channel 501 and the catalytic reaction chamber 40 do not need to be heat-insulated.

[0084] When the temperature is higher than the second preset value, the catalytic reaction chamber 40 is communicated with the first air outlet channel 501. As Figure 9 shown, that is, when the temperature is on the high side, the flue gas can be discharged from the first air outlet channel 501. As Figure 1 shown, the catalytic oxidation device in this embodiment includes a heat exchange device 10 located upstream of the intake channel 20. The heat exchange device 10 includes a first flow channel and a second flow channel. The flue gas enters the intake channel 20 after passing through the first flow channel. After the flue gas undergoes a catalytic reaction in the catalytic reaction chamber 40, it flows to the second flow channel. Obviously, the flue gas in the second flow channel is the flue gas after the catalytic reaction. Then the temperature of the flue gas entering the second flow channel is higher than that of the flue gas in the first flow channel. The flue gas in the first flow channel can be preheated to more efficiently carry out the catalytic reaction in the catalytic reaction chamber 40.

[0085] It can be seen that the flue gas at a higher temperature will exchange heat with the flue gas at a lower temperature in the first flow channel after entering the second flow channel, so that the temperature of the outflowing flue gas is reduced and the temperature of the inflowing flue gas is increased. Taking the VOCs flue gas as an example, the temperature after the catalytic reaction can reach 400 °C, while the temperature of the flue gas after heat exchange can be reduced to 120 °C. If the flue gas flowing out of the second flow channel is introduced into the first outlet channel 501, the cooled flue gas can exchange heat with the heat dissipation component 80, and the heat dissipation component 80 is cooled. Since the heat dissipation component 80 is connected to the catalytic reaction chamber 40, the heat of the flue gas and the sphere 601 in the catalytic reaction chamber 40 can be taken away. When the heat storage phase change material in the sphere 601 stops completely changing to the liquid phase, that is, when the heat storage phase change material is roughly in the D3 state, if the absorbed heat still cannot effectively limit the rise of the surrounding temperature, the heat dissipation function of the heat dissipation component 80 will be activated, and the heat storage phase change material will no longer continue to change to the D4 state, and the temperature will not continue to rise, which is conducive to maintaining the temperature stability of the catalytic reaction chamber 40. It can be seen that the second preset value corresponds to the temperature range when the heat storage phase change material is in the D3 state. It can be known that the first preset value and the second preset value are set according to the temperature requirements of the catalytic reaction zone, and the corresponding heat storage phase change material is selected accordingly. For example, in this embodiment, the temperature requirement of the catalytic reaction zone is approximately 400 °C, then the first preset value can be a certain range lower than 400 °C, such as 380 °C - 395 °C, and the second preset value can be a certain range higher than 400 °C, such as 410 °C - 420 °C.

[0086] When the temperature is not higher than the second preset value, the catalytic reaction chamber 40 is communicated with the second outlet channel 502, as Figure 10 shown, that is, when the temperature is not high and within the normal required catalytic reaction temperature range, the flue gas can be discharged from the second outlet channel 502 without exchanging heat with the heat dissipation component 80 through the first outlet channel 501.

[0087] It can be seen that the catalytic oxidation equipment in this embodiment can be heated or cooled in a timely manner when the temperature is relatively low or high, so as to maintain the temperature stability of the catalytic reaction chamber 40. It should be known that when the temperature of the catalyst layer 30 is too high, the catalyst will be deactivated, resulting in a high desorption temperature, damaging the adsorption material, and even causing potential safety hazards; or when the temperature of the catalyst layer 30 is too low, the catalytic purification rate will be low, the emissions will exceed the standard, and the low desorption temperature will cause the adsorption material to not be completely desorbed. In this embodiment, the temperature of the catalytic reaction chamber 40 can be maintained stable, which is beneficial to ensuring the catalytic purification rate and the safety of catalytic purification. Moreover, in this embodiment, the heat storage phase change component 60 is combined with the electric heating component 90 and the heat dissipation component 80 for temperature maintenance control. It does not rely solely on the heat absorption and heat release of the heat storage phase change component 60 to maintain the temperature. It still has good temperature maintenance ability for scenarios with large temperature fluctuations. The heat storage phase change component does not need to be arranged too much, which is beneficial to reducing the volume of the catalytic oxidation equipment and controlling the cost.

[0088] For continuous reference Figure 9 and Figure 10 , the catalytic oxidation equipment in this embodiment further includes an adjusting component 100, and the heat storage phase change component 60 is connected to the adjusting component 100. When the temperature is higher than the second preset value, the deformation of the heat storage phase change component 60 drives the adjusting component 100 to act to close the second air outlet channel 502 and open the first air outlet channel 501; when the temperature is not higher than the second preset value, the deformation of the heat storage phase change component 60 drives the adjusting component 100 to act to open the second air outlet channel 502 and close the first air outlet channel 501.

[0089] Specifically, the adjusting component 100 includes a connecting rod 1003, a first sealing plate 1001, and a second sealing plate 1002. The first sealing plate 1001 is used to control the opening and closing of the first air outlet channel 501, and the second sealing plate 1002 is used to control the opening and closing of the second air outlet channel 502.

[0090] The first sealing plate 1001 is rotatably connected in the first air outlet channel 501, and the second sealing plate 1002 is rotatably connected in the second air outlet channel 502, specifically rotatably connected to the wall of the corresponding air outlet channel. Moreover, both the first sealing plate 1001 and the second sealing plate 1002 are also rotatably connected to the connecting rod 1003. As Figure 9 , 10As shown in the figure, the middle parts at both ends of the first sealing plate 1001 and the second sealing plate 1002 are rotatably connected to the corresponding first air outlet channel 501 and the second air outlet channel 502. One end of the first sealing plate 1001 and the second sealing plate 1002 is rotatably connected to the connecting rod 1003. The rotation axis is parallel to the flow cross-section direction of the air outlet channel 50. When the connecting rod 1003 moves, it can drive the first sealing plate 1001 and the second sealing plate 1002 to rotate, so as to open and close the corresponding first air outlet channel 501 and the second air outlet channel 502.

[0091] Specifically, the heat storage phase change component 60 drives the connecting rod 1003 to move. The connecting rod 1003 simultaneously drives the first sealing plate 1001 and the second sealing plate 1002 to rotate. Then, the deformation of the heat storage phase change component 60 can simultaneously drive the first sealing plate 1001 and the second sealing plate 1002 to rotate, so as to timely convert the deformation of the heat storage phase change component into the flipping action of the sealing plate.

[0092] The adjusting component 100 may further include a fixing plate 1004. At least part of the fixing plate 1004 can extend along the flow direction. When the first sealing plate 1001 and the second sealing plate 1002 are abutted against the corresponding fixing plate 1004, the corresponding air outlet channel can be sealed. In this way, the rotation amplitude of the first sealing plate 1001 and the second sealing plate 1002 can be relatively small, so as to reduce the requirement for the deformation amount of the heat storage phase change component 60. Figure 9 、 10 The fixing plate 1004 in is generally arranged in a Z shape. One end of the fixing plate 1004 cooperates with one sealing plate, and the other end is in sealing cooperation with another adjacent sealing plate.

[0093] The adjusting component 100 in this embodiment may include a plurality of first sealing plates 1001, a plurality of fixing plates 1004, and a plurality of second sealing plates 1002. That is, when a plurality of first sealing plates 1001 are all in the open position and a plurality of second sealing plates 1002 are in the blocking position, the first air outlet channel 501 can be opened and the second air outlet channel 502 can be closed. When a plurality of second sealing plates 1002 are all in the open position and a plurality of first sealing plates 1001 are in the blocking position, the first air outlet channel 501 can be closed and the second air outlet channel 502 can be opened. In this way, the sizes of the first sealing plate 1001 and the second sealing plate 1002 can be set to be relatively small, which is convenient for arrangement.

[0094] Two groups or more adjusting components 100 can also be arranged in the air outlet channel 50. When two groups or more adjusting components 100 are provided, they can be arranged along the flow direction of the air outlet channel 50. Figure 9 、 10Two sets of adjusting components 100 are distributed along the up-and-down direction. For the convenience of unified control, a push-pull rod 130 can be set. The push-pull rod 130 is connected to the connecting rods 1003 of the two sets of adjusting components 100 at the same time, so that the actions of the sealing plates of the two sets of adjusting components 100 can be controlled simultaneously. Setting two or more sets of adjusting components 100 facilitates more accurate control of the opening and closing of the first air outlet channel 501 and the second air outlet channel 502.

[0095] Such as Figures 11 to 13 shown, Figure 11 is Figure 1 an enlarged schematic view of part D in Figure 12 is Figure 11 the left view of , and the rack 1102 is in the first position; Figure 13 is Figure 12 a schematic view of the rack 1102 in the second position in .

[0096] The catalytic oxidation equipment in this embodiment further includes a transmission mechanism 110. The transmission mechanism 110 includes a rack 1102, a gear 1103, and a first transmission rod 1105 and a second transmission rod 1106. The deformation of the heat storage phase change component 60 drives the movement of the rack 1102 to drive the rotation of the gear 1103. Specifically, in this embodiment, the rack 1102 extends along the height direction H. When the heat storage phase change component 60 is heated and expands, it can move upward, thereby pushing the rack 1102 upward. Figure 1 In , the top of the heat storage phase change component 60 can have a top cover, and the top cover moves upward to push the rack 1102. It can also be that a push rod is arranged above the heat storage phase change component 60 to drive the push rod to move upward to push the rack 1102. The first transmission rod 1105 and the gear 1103 are fixedly connected or limitedly connected. When the gear 1103 rotates, it can drive the first transmission rod 1105 to swing around the axis of the gear 1103. The first transmission rod 1105 and the second transmission rod 1106 are connected. The first transmission rod 1105 is provided with a second guide groove 1105a extending along its length direction. The second transmission rod 1106 is inserted into the second guide groove 1105a. The second transmission rod 1106 is set to be only translatable, and the second transmission rod 1106 is connected to the connecting rod 1003 or the above-mentioned push-pull rod 130. In this way, when the first transmission rod 1105 rotates, the second transmission rod 1106 does not rotate but translates, thereby driving the connecting rod 1003 or the push-pull rod 130 to move, and finally driving the first sealing plate 1001 and the second sealing plate 1002 to move and rotate.

[0097] In this embodiment, the connecting rod 1003 drives a plurality of first sealing plates 1001 and second sealing plates 1002 to rotate at the same time. Sliding grooves can also be provided in the first sealing plate 1001 and the second sealing plate 1002 to cooperate with the connecting rod 1003 to ensure that when the connecting rod 1003 translates, it drives the corresponding sealing plate to rotate.

[0098] The transmission mechanism 110 may further include a rack plate 1101 and a guide rod 1104. The rack 1102 is disposed on the rack plate 1101. The rack plate 1101 may be provided with a first guide groove 1101a which may extend along the height direction H. The guide rod 1104 is inserted into the first guide groove 1101a. The guide rod 1104 may be fixedly connected or limit-connected to the catalytic reaction chamber 40. The first guide groove 1101a is parallel to the moving direction of the rack 1102. In this way, the cooperation between the guide rod 1104 and the first guide groove 1101a is conducive to ensuring that the rack 1102 moves upward or downward under the deformation effect of the heat storage phase change component 60.

[0099] Please refer to Figures 14 to 17 , Figure 14 which is a schematic structural diagram of the catalytic oxidation device in the second embodiment of the present application; Figure 15 is Figure 14 a schematic cross-sectional view taken along the F-F direction in Figure 16 is Figure 15 a schematic structural diagram of the heat storage phase change component 60 in , where the heat storage phase change component 60 is in the first state; Figure 17 is Figure 16 a schematic structural diagram of the heat storage phase change component 60 in the second state in .

[0100] In this embodiment, the principle of maintaining the temperature stability of the catalytic reaction zone is the same as that of the above embodiment, but the specific structure of the heat storage phase change component 60 is different from that of the above embodiment. Figure 14 In the heat storage phase change component 60 in the illustrated embodiment, the on-off control of the electric heating component 90 is no longer achieved by providing a sphere 601 wrapped with a phase change heat storage material.

[0101] As Figure 16 shown, the heat storage phase change component 60 in this embodiment includes a first housing 604 filled with a heat storage phase change material 602. At least part of the wall of the second housing 603 can be connected to the electric heating component 90 which is at least part of the wall of the catalytic reaction chamber 40. The catalytic oxidation device further includes a pair of contacts 120 of a relay. When the temperature is lower than the first preset value, the heat storage phase change material 602 deforms to leave the pair of contacts 120 or contact the pair of contacts 120 to connect the heating circuit of the electric heating component 90. The heat storage phase change material 602 may be a conductive material. As Figure 16 shown, the contacts 120 are located at a preset height position of the first housing 604. When the heat storage phase change material 602 is in the intermediate molten state, the height of the heat storage phase change material 602 in the first housing 604 reaches the height of the contacts 120, and the heat storage phase change material 602 contacts the pair of contacts 120; as Figure 17As shown, when the temperature drops, the heat storage phase change material 602 shrinks and descends, making its height lower than that of the contact 120, and the heat storage phase change material 602 is separated from the pair of contacts 120. In this embodiment, it can be set that when the contact 120 is disconnected, the heating circuit of the electric heating plate 901 is turned on.

[0102] A catalyst layer 30 is provided in the catalytic reaction chamber 40 in this embodiment. The heat storage phase change component 60 further includes a plurality of second housings 603, as Figure 18 shown Figure 18 is Figure 15 a schematic structural diagram of the second housing 603 and the heat storage phase change material 602 therein.

[0103] Each second housing 603 is filled with a heat storage phase change material 602. The plurality of second housings 603 are embedded in the catalyst layer 30. Each second housing 603 communicates with the first housing 604. Both the first housing 604 and the second housing 603 can be hollow plate structures. With such a setting, the catalyst layer 30 is partitioned, and each zone is clamped between two adjacent second housings 603 to better maintain the temperature of the catalyst layer 30 stable. Moreover, the heat storage phase change material 602 in the second housing 603 can better sense the temperature change of the catalyst layer 30 and transmit the deformation of the heat storage phase change material 602 into the first housing 604, making the height change of the heat storage phase change material 602 in the first housing 604 more sensitive. The second housing 603 can be in close contact with the catalyst layer 30, for example. Of course, there can also be a gap between the second housing 603 and the catalyst layer 30. The end of the second housing 603 can extend out of the catalyst layer 30, and the end can be set to have a larger size in the direction perpendicular to the flue gas flow direction. As Figure 18 shown, the second housing 603 has a structure with larger ends and a smaller middle, which is conducive to the turbulent flow of the flue gas and promotes heat transfer. It can be understood that the second housing 603 can also be arranged on the upper and lower sides of the catalyst layer 30 as in the first embodiment. In comparison, in this embodiment, the opening and closing control of the electric heating component 90 is realized by using the height change of the heat storage phase change material 602 in the first housing 604. A plurality of second housings 603 containing the heat storage phase change material 60 are provided, and the plurality of second housings 603 extend along the height direction H, which can cooperate better with the catalyst layer 30 and is more conducive to realizing the response speed of the height change of the heat storage phase change material 602 in the first housing 604. It can be seen that when a plurality of second housings 603 are provided, the first housing 604 can be arranged outside the catalytic reaction chamber 40.

[0104] In this embodiment, when the temperature is on the high side, temperature control is also achieved by selecting two air outlet channels, and the adjusting member 100 and the transmission mechanism 110 are also provided. In addition, in this embodiment, the transmission mechanism 110 may further include a piston 1108 and a piston rod 1107. The piston 1108 is located in the first housing 604. When the height of the heat storage phase change material 602 changes, the piston rod 1107 can be driven by the piston 1108 to move up and down. The piston rod 1107 can push the rack plate 1101 in the transmission mechanism 110. The specific process and principle are the same as those in the first embodiment and will not be elaborated here.

[0105] As Figure 19 , 20 shown, Figure 19 is Figure 14 a schematic cross-sectional view along E-E in Figure 20 is Figure 19 a schematic structural view of the heat dissipation component 80 in

[0106] The heat dissipation component 80 in this embodiment includes a heat dissipation plate 801 and pipes 802 arranged on the heat dissipation plate 801. Figure 1 Or Figure 19 As can be seen from both , a plurality of heat dissipation components 80 are arranged in the first air outlet channel 501. The plurality of heat dissipation components 80 can be arranged in an array in the first air outlet channel 501 to enhance the heat dissipation effect. Each heat dissipation plate 801 may include a plurality of pipes 802. The pipes 802 are communicated with the heat storage phase change component 60, and the heat storage phase change material 602 in the heat storage phase change component 60 can flow into the pipes 802. In this way, when the temperature is relatively high, the thermally expanded heat storage phase change material in the heat storage phase change component 60 can flow more into the pipes 802 and exchange heat in the pipes 802, so that temperature control can be carried out in a timely manner to better maintain the temperature stability in the catalytic reaction chamber 40. Obviously, the structural form of arranging the pipes 802 in the heat dissipation component 80 is applicable to all embodiments.

[0107] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A catalytic oxidation device, characterized in that: The invention comprises a catalytic reaction chamber (40), an electric heating component (90) capable of heating the catalytic reaction chamber (40), and a heat storage phase change component (60) located in the catalytic reaction chamber (40); when the temperature of the heat storage phase change component (60) is lower than a first preset value, the heat storage phase change component (60) is deformed to connect a heating circuit of the electric heating component (90).

2. The catalytic oxidation device according to claim 1, characterized in that: The catalytic oxidation device is provided with a relay for controlling the on / off of the heating circuit, and the heat storage phase change component (60) is deformed to contact or disengage from a contact point (120) of the relay to control the on / off of the heating circuit.

3. The catalytic oxidation device according to claim 2, characterized in that: The heat storage phase change component (60) comprises a plurality of spheres (601), wherein the spheres (601) comprise a spherical metal shell, and the metal shell contains a heat storage phase change material; The electric heating component (90) is provided with at least one groove (901a), and at least a portion of the contact point (120) is located in the groove (901a); when the temperature is lower than the first preset value, at least one of the spheres (601) shrinks and falls into one of the grooves (901a) and contacts the contact point (120), so as to connect the heating circuit.

4. The catalytic oxidation device according to claim 3, characterized in that: The spherical surface of the sphere (601) is equally divided into a plurality of equally divided surfaces (6011), each of the equally divided surfaces (6011) comprises a central portion (60112) and a peripheral portion (60111) surrounding the central portion (60112), the peripheral portion (60111) comprises a convex ridge (60111a) and a concave portion (60111b), and the convex ridge (60111a) and the concave portion (60111b) are alternately distributed in a direction approaching the central portion (60112).

5. The catalytic oxidation device according to claim 4, characterized in that: The bisecting surface (6011) is a surface that divides the sphere into one eighth of the sphere.

6. The catalytic oxidation device according to claim 3, characterized in that: At least one catalyst layer (30) is arranged in the catalytic reaction chamber (40), and the heat storage phase change component (60) is arranged on at least one side of the catalyst layer (30) along its thickness direction, and the heat storage phase change component (60) and the catalyst layer (30) are stacked.

7. The catalytic oxidation device according to claim 6, characterized in that: The electric heating plate is arranged on the side of the heat storage phase change component (60).

8. The catalytic oxidation device according to claim 2, characterized in that: The heat storage phase change component (60) comprises a first shell (604), the first shell (604) is filled with a heat storage phase change material (602), and the contact (120) is connected to the first shell (604); when the temperature is lower than the first preset value, the heat storage phase change material (602) is deformed to separate from the contact (120) to connect the heating circuit of the electric heating component (90).

9. The catalytic oxidation device according to claim 8, characterized in that: A catalyst layer (30) is arranged in the catalytic reaction chamber (40); The heat storage phase change component (60) further comprises a plurality of second shells (603), each of which is filled with a heat storage phase change material (602), the plurality of second shells (603) are embedded in the catalyst layer (30), and each of the second shells (603) is in communication with the first shell (604).

10. The catalytic oxidation device according to any one of claims 1 to 9, characterized in that: The electric heating component (90) comprises an electric heating plate (901), and at least part of the wall of the electric heating plate (901) is part of the wall of the catalytic reaction chamber (40).

11. The catalytic oxidation device according to any one of claims 1 to 9, characterized in that: The catalytic oxidation device comprises a first gas outlet channel (501) and a second gas outlet channel (502); the first gas outlet channel (501) is provided with a heat dissipation component (80); the heat dissipation component (80) is connected to the catalytic reaction chamber (40); When the temperature is higher than a second preset value, the catalytic reaction chamber (40) and the first gas outlet channel (501) are in communication; When the temperature is not higher than the second preset value, the catalytic reaction chamber (40) and the second gas outlet channel (502) are in communication.

12. The catalytic oxidation device according to claim 11, characterized in that: The catalytic oxidation device further comprises an adjusting component (100), and the heat storage phase change component (60) is connected to the adjusting component (100); When the temperature is higher than the second preset value, the heat storage phase change component (60) deforms to drive the regulating component (100) to operate, so as to close the second air outlet channel (502) and open the first air outlet channel (501); When the temperature is not higher than the second preset value, the heat storage phase change component (60) deforms to drive the regulating component (100) to operate, so as to open the second air outlet channel (502) and close the first air outlet channel (501).

13. The catalytic oxidation device according to claim 12, characterized in that: The regulating component (100) comprises a connecting rod (1003) and a first sealing plate (1001) and a second sealing plate (1002); the first sealing plate (1001) is used to control the opening and closing of the first air outlet channel (501); and the second sealing plate (1002) is used to control the opening and closing of the second air outlet channel (502); The first sealing plate (1001) is rotatably connected in the first air outlet channel (501), the second sealing plate (1002) is rotatably connected in the second air outlet channel (502), and the first sealing plate (1001) and the second sealing plate (1002) are both rotatably connected to the connecting rod (1003); The heat storage phase change component (60) drives the connecting rod (1003) to move, and the connecting rod (1003) drives the first sealing plate (1001) and the second sealing plate (1002) to rotate, so as to open and close the corresponding first air outlet channel (501) and the second air outlet channel (502).

14. The catalytic oxidation device according to claim 13, characterized in that: The catalytic oxidation device further comprises a transmission mechanism (110), the transmission mechanism (110) comprising a rack (1102), a gear (1103), a first transmission rod (1105), and a second transmission rod (1106); the heat storage phase change component (60) deforms to drive the rack (1102) to move, so as to drive the gear (1103) to rotate; the gear (1103) drives the first transmission rod (1105) to swing; the first transmission rod (1105) drives the second transmission rod (1106) to move in a translational manner; the second transmission rod (1106) and the connecting rod (1003) are directly or indirectly connected to drive the connecting rod (1003) to move.

15. The catalytic oxidation device according to claim 11, characterized in that: The heat dissipation component (80) comprises a plurality of pipes (802), the pipes (802) being in communication with the heat storage phase change component (60), and the heat storage phase change material in the heat storage phase change component (60) can flow into the pipes (802).

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