An RCO catalytic combustion device for waste gas treatment in industrial production

Abstract

The present invention discloses an RCO catalytic combustion device for waste gas treatment in industrial production. The RCO catalytic combustion device has a preheating chamber, a catalytic combustion chamber, a heat exchange chamber, and a heat recovery device. The heat recovery device is connected to the preheating chamber. An air inlet is provided on the preheating chamber, and an air outlet is provided on the heat exchange chamber. Waste gas enters from the air inlet, successively passes through the preheating chamber, the catalytic combustion chamber, and the heat exchange chamber, and finally is discharged through the air outlet. The heat recovery device transfers the heat of the burned gas in the heat exchange chamber to the preheating chamber. The present invention improves the efficiency of catalytic combustion and facilitates the replacement of the catalyst.

Description

Technical Field

[0001] The present invention belongs to the field of environmental protection, and particularly relates to an RCO catalytic combustion device for waste gas treatment in industrial production. Background Art

[0002] The topic of environmental protection has always been a hot issue that attracts much attention. In industrial production, in order to achieve harmless emission of gases, environmental protection treatment of gases is required, and there are many specific treatment means.

[0003] When the RCO reaction device treats waste gas, the effects of filtration, preheating, and catalytic combustion are not ideal, resulting in waste of resources.

[0004] Therefore, it is necessary to provide an RCO catalytic combustion device that can improve the effects of preheating and catalytic combustion to solve the above technical problems. Summary of the Invention

[0005] In view of the above technical problems, the present invention provides an RCO catalytic combustion device for waste gas treatment in industrial production, aiming to solve the problems in the prior art and improve the preheating effect and conversion efficiency during combustion.

[0006] To solve the above technical problems, the technical solution of the present invention is as follows:

[0007] An RCO catalytic combustion device for waste gas treatment in industrial production, the RCO catalytic combustion device has a preheating chamber 1, a catalytic combustion chamber, a heat exchange chamber 5, and a heat recovery device. The heat recovery device is connected to the preheating chamber 1. An air inlet 6 is provided on the preheating chamber 1, and an air outlet 16 is provided on the heat exchange chamber 5. Waste gas enters from the air inlet 6, successively passes through the preheating chamber 1, the catalytic combustion chamber, and the heat exchange chamber, and finally is discharged through the air outlet 16. The heat recovery device transfers the heat of the burned gas in the heat exchange chamber 5 to the preheating chamber 1.

[0008] Further, the heat recovery device includes a heat exchanger 13 disposed in the heat exchange chamber 5 and a water tank 11 (filled with water) disposed around the preheating chamber 1. The heat exchanger 13 has a plurality of heat exchanger units 15. The heat exchanger units 15 are all connected to the water tank 11. The heat exchanger unit can transfer the heat of the gas after catalytic combustion to the water in the water tank 11 to provide heat for the preheating chamber 1.

[0009] The present invention improves the efficiency of catalytic combustion and facilitates the replacement of the catalyst. Brief Description of the Drawings

[0010] Figure 1 The front view of the RCO catalytic combustion device of the present invention;

[0011] Figure 2 Schematic diagram of the internal structure of the RCO catalytic combustion equipment of the present invention;

[0012] Figure 3 Enlarged sectional view of the preheating chamber of the RCO catalytic combustion equipment of the present invention;

[0013] Figure 4 Enlarged sectional view of the first catalytic combustion chamber of the present invention;

[0014] Figure 5 Enlarged sectional view of the second catalytic combustion chamber of the present invention;

[0015] Figure 6 Enlarged sectional view of the third catalytic combustion chamber of the present invention;

[0016] Figure 7 Enlarged sectional view of the heat exchange chamber of the present invention;

[0017] Figure 8 Schematic diagram of the structure of the catalyst column of the present invention;

[0018] Figure 9 Schematic diagram of the structure of the top loading device of the present invention;

[0019] Figure 10 The present invention Figure 9 Partial enlarged view in;

[0020] Figure 11 Schematic diagram when the loading device of the present invention places and replaces the catalyst column;

[0021] In the figure, preheating chamber 1, first catalytic combustion chamber 2, first catalytic cavity 201, second catalytic combustion chamber 3, second catalytic cavity 301, third catalytic combustion chamber 4, third catalytic cavity 401, heat exchange chamber 5, air inlet 6, first connecting neck 7, second connecting neck 8, third connecting neck 9, fourth connecting neck 10, water tank 11, catalyst column 12, catalyst body 1201, support end 1202, first cavity 1203, first bullet head 1204, first spring 1205, connecting groove 1206, receiving groove 1207, heat exchanger 13, groove 14, heat exchanger unit 15, air outlet 16, loading cavity 17, cover plate 18, motor 19, pulling rope 20, support column 21, movable column 22, connecting head 23, first electric rod 24, support plate 25, second electric rod 26, support rod 27, support wheel 28, third electric rod 29, second cavity 30, second bullet head 31, second spring 32, elastic surface 33, upper cover 34, opening 35. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In the present invention, unless otherwise clearly defined and limited, terms such as "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, terms such as "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include one or more of such features.

[0026] As Figure 1 shown, the present invention discloses an RCO catalytic combustion device for waste gas treatment in industrial production. The RCO catalytic combustion device of the present invention has a preheating chamber 1, a catalytic combustion chamber, a heat exchange chamber 5, and a heat recovery device. The heat recovery device is connected to the preheating chamber 1. An air inlet 6 is provided on the preheating chamber 1, and an air outlet 16 is provided on the heat exchange chamber 5. A fan is provided at the air outlet 16. Waste gas enters from the air inlet 6, successively passes through the preheating chamber 1, the catalytic combustion chamber, and the heat exchange chamber, and finally is discharged through the air outlet 16. The heat recovery device transfers the heat of the combusted gas in the heat exchange chamber 5 to the preheating chamber 1. As Figure 2 shown, the heat recovery device includes a heat exchanger 13 provided in the heat exchange chamber 5 and a water tank 11 (with water) provided around the preheating chamber 1. As Figure 7 shown, the heat exchanger 13 has a plurality of heat exchanger units 15. The heat exchanger units 15 are all connected to the water tank 11 (not shown in the figure). The heat exchanger units 15 transfer the heat of the gas after catalytic combustion to the water in the water tank 11 to provide heat for the preheating chamber 1.

[0027] As shown Figure 1 and 2 in the figure, the catalytic combustion chamber includes a first catalytic combustion chamber 2, a second catalytic combustion chamber 3, and a third catalytic combustion chamber 4. The preheating chamber 1, the first catalytic combustion chamber 2, the second catalytic combustion chamber 3, the third catalytic combustion chamber 4, and the heat exchange chamber 5 are stacked in sequence from top to bottom, and the connection parts in sequence are a first connecting neck 7, a second connecting neck 8, a third connecting neck 9, and a fourth connecting neck 10. Catalyst columns 12 are arranged in the first catalytic combustion chamber 2, the second catalytic combustion chamber 3, and the third catalytic combustion chamber 4.

[0028] According to Figure 1 and 2 it can be obviously obtained that the first catalytic combustion chamber 2, the second catalytic combustion chamber 3, and the third catalytic combustion chamber 4 are all ellipsoidal structures, respectively having a first catalytic cavity 201, a second catalytic cavity 301, and a third catalytic cavity 401, and the maximum diameter of the third catalytic combustion chamber 4 in the horizontal plane is greater than that of the second catalytic combustion chamber 3 which is greater than that of the first catalytic combustion chamber 2.

[0029] As shown Figures 3 - 7 in the figure, grooves 14 are provided on the inner sides of the first connecting neck 7, the second connecting neck 8, the third connecting neck 9, and the fourth connecting neck 10. The number of grooves 14 on each connecting neck can be one or two according to the actual installation requirements of the catalyst column 12.

[0030] As shown Figure 8 in the figure, the catalyst column 12 includes a catalyst body 1201. The catalyst body 1201 is a columnar structure, and a plurality of through holes are provided thereon to facilitate the flow of gas. Support ends 1202 are provided at both ends of the catalyst body 1201. A plurality of first cavities 1203 are evenly provided on the side surfaces of the support ends 1202. A first bullet head 1204 and a first spring 1205 are provided in the first cavities 1203. The first spring 1205 presses against the first bullet head 1204, so that the head of the first bullet head 1204 can extend out of the first cavity 1203 and can retract into the first cavity 1203 when subjected to a certain external pressure. When installing the catalyst column 12, the head of the first bullet head 1204 is stuck into the groove 14. The groove 14 is an annular groove, and the cross-section of the inner wall of the groove 14 is semicircular. As shown Figure 8 in the figure, corresponding to the groove 14, the head of the first bullet head 1204 is set as a hemisphere. When the catalyst column 12 is pushed or pulled, the head of the first bullet head 1204 crosses the groove 14 and retracts into the first cavity 1203. As shown Figure 8 in the figure, a connection groove 1206 is provided on the end surface of one of the support ends 1202. The connection groove 1206 is a cylindrical groove, and an annular receiving groove 1207 is provided on the inner side surface of the connection groove 1206, and the inner wall cross-section is also semicircular.

[0031] The RCO catalytic combustion equipment of the present invention should be arranged to be stacked in the vertical direction. Placing it horizontally will cause serious deposition in each chamber, which is not conducive to the long-term use of the device of the present invention. Therefore, the RCO catalytic combustion equipment of the present invention further includes a top loading device, such as Figure 9 shown, the top loading device has a loading cavity 17, a cover plate 18 is arranged above the loading cavity 17, a motor 19 is fixed above the cover plate 18, a pulling rope 20 is wound around the motor 19, and one end of the pulling rope 20 is connected to the docking device;

[0032] such as Figure 1 、 2 shown, an upper cover 34 is arranged between the loading cavity 17 and the preheating chamber 1. During the normal waste gas treatment process, the upper cover 34 is closed. An opening 35 is opened on the loading cavity 17 to facilitate the replacement of a new catalyst column 12. The catalyst column 12 can be installed or disassembled from the docking device (connector 23) through the opening 35, Figure 11 The state in which the catalyst column 12 is on the docking device is shown in

[0033] such as Figure 9 、 10 shown, the docking device includes a support column 21 and a movable column 22. Both the support column 21 and the movable column 22 are cylindrical structures. The movable column 22 is sleeved on the support column 21 and can slide thereon. The upper end of the movable column 22 is connected to the pulling rope 20, and the lower end of the movable column 22 is provided with a connector 23. On the support column 21 and on both sides of the movable column 22, there are two-way first electric rods 24. There are two sets of first electric rods 24 arranged up and down. Both ends of the first electric rod 24 are hinged with a support plate 25. One end of the second electric rod 26 is hinged with the upper end of the support plate 25, and the other end is hinged with the movable column 22. One end of a support rod 27 is hinged to the side surface of the lower end of the support column 21, a support wheel 28 is arranged at the end of the support rod 27, and one end of a third electric rod 29 is hinged with the support rod 27, and the other end is hinged with the support column 21.

[0034] The connector 23 passes through the support column 21. A plurality of second cavities 30 are evenly opened on the side surface of the connector 23. A second bullet 31 and a second spring 32 are arranged in the second cavity 30. The second spring 32 presses against the second bullet 31, so that the head of the second bullet 31 can protrude from the second cavity 30. When subjected to a certain external pressure, the head can retract into the second cavity 30. When the connector 23 is connected to the catalyst column 12, the head of the second bullet 31 is stuck into the receiving groove 1207.

[0035] Since the connections between the connector 23 and the catalyst column 12, and between the catalyst column 12 and the connecting necks (the first connecting neck 7, the second connecting neck 8, the third connecting neck 9, and the fourth connecting neck 10) are all in the form of a bullet head mating with a groove, in order to be able to disassemble the catalyst column 12, the elastic force (applied force) of the second spring 32 on the second bullet head 31 is greater than the elastic force (applied force) of the first spring 1205 on the first bullet head 1204. In this way, when the first bullet head 1204 retracts into the first cavity 1203, the head of the second bullet head 31 can still be stuck in the receiving groove 1207.

[0036] The first catalytic combustion chamber 2, the second catalytic combustion chamber 3, and the third catalytic combustion chamber 4 are all equipped with heating devices (not shown in the figure). The heating devices adopt the heating devices disclosed in the existing technologies in this field or conventional heating devices. The diameter of the preheating chamber 1 is larger than the diameter of the connecting neck.

[0037] In the present invention, the exhaust gas enters the preheating chamber 1 from the air inlet 6 for preheating, and then enters the first catalytic combustion chamber 2, the second catalytic combustion chamber 3, and the third catalytic combustion chamber 4 in sequence. Since they are all ellipsoids and the maximum diameters increase in sequence, the flow rate of the exhaust gas in the three catalytic combustion chambers decreases in sequence. As Figure 4 、 5 、6 shows, the exhaust gas mainly surrounds the catalyst column 12 in each catalytic cavity. Such a setting can improve the catalytic conversion rate. There is no such case in the existing technologies to improve the catalytic conversion rate by changing the structure of the catalytic combustion chamber and the placement method of the catalyst. And because the flow rate decreases in sequence, compared with the same flow rate or a flow rate with little difference, the catalytic conversion rate of the present invention can be increased by 10 - 15 percentage points, achieving more environmentally friendly emissions.

[0038] Since the components in the exhaust gas are relatively complex, the catalyst column 12 needs to be replaced. First, the motor 19 rotates, and the support column 21 and the movable column 22 descend under their own gravity (the weights of the support column 21 and the movable column 22 are relatively large, which can be designed according to actual needs), and all three catalyst columns 12 are pushed and stacked to the lower part (none of the three catalyst columns 12 can move downward anymore). The controller controls the first electric rod 24 and the second electric rod 26 to make the support plate 25 abut against the side wall to achieve support. The controller controls the second electric rod 26 to contract, thereby driving the movable column 22 to move downward, the connector 32 is inserted into the connection groove 1206, and the second bullet head 31 is stuck into the receiving groove 1207. The controller controls the first electric rod 24 and the second electric rod 26 to release the abutment of the support plate 25 and the side wall, and controls the third electric rod 29 to extend to make the support rod 27 horizontal. The motor 19 lifts to the state as Figure 11 shown, and the support wheel 28 plays a role in preventing the catalyst column 12 from colliding with the side wall when passing through each connecting neck. When replacing the new catalyst column 12, the catalyst column 12 is sleeved on the connector 23, as Figure 11, the motor 19 rotates, and the support column 21 and the movable column 22 descend under their own gravity. When they move to the corresponding connecting neck, the controller controls the first electric rod 24 and the second electric rod 26 to make the support plate 25 abut against the side wall to achieve support. The controller controls the second electric rod 26 to contract, thereby driving the movable column 22 to move downward to clamp the catalyst column 12 in the groove 14; the controller controls the first electric rod 24 and the second electric rod 26 to release the abutment of the support plate 25 against the side wall, and at the same time controls the first electric rod 24 and the second electric rod 26 again to make the lower end surface of the support column 21 abut against the upper end surface of the support end 1202, and controls the first electric rod 24 and the second electric rod 26 again to make the support plate 25 abut against the side wall. The controller controls the second electric rod 26 to extend, and the movable column 22 moves upward, and the connection with the catalyst column 12 is released by means of the lower end surface of the support column 21. Finally, the motor 19 is lifted, and the installation of a single catalyst column 12 is completed.

[0039] For non-planar side walls, the two groups of first electric rods 24 can be respectively controlled to extend different lengths to facilitate abutment against the arc surface. At the same time, an elastic surface 33 is provided on the support plate 25 to make it more convenient to abut against the arc surface.

[0040] The present invention has made improvements to the structure, but all the well-known components that enable the present invention to be implemented are provided in the present invention, such as a device for pumping water to achieve water circulation.

[0041] The present invention improves the efficiency of catalytic combustion and facilitates the replacement of the catalyst.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An RCO catalytic combustion device for waste gas treatment in industrial production, characterized in that: The RCO catalytic combustion equipment has a preheating chamber (1), a catalytic combustion chamber, a heat exchange chamber (5), and a heat recovery device. The heat recovery device is connected to the preheating chamber (1). An air inlet (6) is provided on the preheating chamber (1), and an air outlet (16) is provided on the heat exchange chamber (5). The waste gas enters from the air inlet (6), successively passes through the preheating chamber (1), the catalytic combustion chamber, and the heat exchange chamber, and finally is discharged through the air outlet (16). The heat recovery device transfers the heat of the combusted gas in the heat exchange chamber (5) to the preheating chamber (1). The catalytic combustion chamber includes a first catalytic combustion chamber (2), a second catalytic combustion chamber (3), and a third catalytic combustion chamber (4). The preheating chamber (1), the first catalytic combustion chamber (2), the second catalytic combustion chamber (3), the third catalytic combustion chamber (4), and the heat exchange chamber (5) are stacked successively from top to bottom, and the connection points in sequence are a first connecting neck (7), a second connecting neck (8), a third connecting neck (9), and a fourth connecting neck (10). Catalyst columns (12) are provided in the first catalytic combustion chamber (2), the second catalytic combustion chamber (3), and the third catalytic combustion chamber (4). The first catalytic combustion chamber (2), the second catalytic combustion chamber (3), and the third catalytic combustion chamber (4) are all ellipsoidal structures, respectively having a first catalytic cavity (201), a second catalytic cavity (301), and a third catalytic cavity (401), and the maximum diameter in the horizontal plane is such that the third catalytic combustion chamber (4) > the second catalytic combustion chamber (3) > the first catalytic combustion chamber (2).

2. The RCO catalytic combustion equipment for waste gas treatment in industrial production according to claim 1, characterized in that: The heat recovery device includes a heat exchanger 13 provided in the heat exchange chamber 5 and a water tank 11 provided around the preheating chamber 1. The heat exchanger 13 has a plurality of heat exchanger units 15, and the heat exchanger units 15 are all connected to the water tank 11. The heat exchanger units can transfer the heat of the gas after catalytic combustion to the water in the water tank 11 to provide heat for the preheating chamber 1.

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