An exhaust gas treatment device

Abstract

The utility model discloses a tail gas treatment device belongs to tail gas treatment technical field, including heat exchanger and reactor, the bottom of heat exchanger is provided with tail gas entrance, and the inside of heat exchanger is equipped with two independent passages, and one end of one passage is refrigerant inlet, and the other end is refrigerant outlet, and the inside of reactor is equipped with denitration catalyst, and the lower end of reactor is provided with tail gas outlet. The utility model solves the problem of the instability of the various indexes of the existing tail gas. The utility model discloses a tail gas treatment device belongs to tail gas treatment technical field, including heat exchanger and reactor, the bottom of heat exchanger is provided with tail gas entrance, and the inside of heat exchanger is equipped with two independent passages, and one end of one passage is refrigerant inlet, and the other end is refrigerant outlet, and the inside of reactor is equipped with denitration catalyst, and the lower end of reactor is provided with tail gas outlet.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, specifically to an exhaust gas treatment device. Background Technology

[0002] Existing exhaust gas treatment devices mainly produce nitrogen oxides by oxidizing 3-cyanopyridine, 4-cyanopyridine and other related organic compounds generated by ammonia oxidation reaction, and then producing nitrogen, water and carbon dioxide through a denitrification catalytic reaction.

[0003] The existing workshop process mainly involves heating the exhaust gas with electricity before it enters the oxidation and denitrification reaction. This production process makes the various indicators of the exhaust gas unstable. Utility Model Content

[0004] The purpose of this utility model is to provide an exhaust gas treatment device that can fully react the exhaust gas, reduce various exhaust gas indicators, and better meet environmental protection requirements, while reducing certain power consumption and solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tail gas treatment device includes a heat exchanger and a reactor connected to the heat exchanger via a pipe. The bottom of the heat exchanger is provided with a tail gas inlet. The heat exchanger has two independent channels inside, one end of which is a refrigerant inlet and the other end is a refrigerant outlet. The reactor is provided with a denitrification catalyst inside. The lower end of the reactor is provided with a tail gas outlet.

[0007] Preferably, the denitrification catalyst is placed on a support plate, which is movably connected to the reactor. Both ends of the support plate are connected to the inner wall of the reactor, and a guide groove is provided on the inner wall of the reactor for the support plate to move horizontally.

[0008] Preferably, a linkage block is provided at the bottom of the support plate, one end of the linkage block is movably connected to the guide rod, and the other end of the linkage block is movably connected to the lead screw. Both the guide rod and the lead screw are installed inside the reactor.

[0009] Preferably, the lead screw is driven to rotate by a motor, wherein the motor is mounted on the outer wall of the reactor, and the output shaft of the motor is connected to the lead screw via a coupling.

[0010] Preferably, the reactor has a replacement port on its side, which is sealed by a sealing plate. The sealing plate is mounted on a mounting bracket, which is installed on the outer wall of the reactor.

[0011] Preferably, the sealing plate is fixed to the reactor by a clamp rod, the clamp rod is connected to the base by a telescopic guide column and a helical spring, and the base is installed on the outer wall of the reactor.

[0012] Preferably, the lever is provided with an upwardly extending protrusion that penetrates the base.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention introduces a process where the exhaust gas after denitrification treatment enters a heat exchanger through the exhaust gas inlet. The heat exchanger controls the temperature of the denitrified exhaust gas, allowing it to enter the reactor at a constant temperature. In the reactor, the exhaust gas undergoes a denitrification reaction under the action of a catalyst. Finally, the fully reacted exhaust gas is discharged through the exhaust gas outlet. This process ensures that the exhaust gas undergoes a thorough reaction, resulting in lower exhaust gas performance and compliance with environmental protection requirements. It also reduces energy consumption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the exhaust gas treatment device of this utility model;

[0016] Figure 2 This is a schematic diagram of the reactor structure for sealing the replacement port of the sealing plate according to this utility model.

[0017] Figure 3 This is a schematic diagram of the reactor structure of the present invention with an unsealed replacement port of the sealing plate.

[0018] Figure 4 This is a schematic diagram of the reactor structure in which the denitrification catalyst of this invention is moved to the outside of the reactor.

[0019] Figure 5 A partial sectional bottom view of the reactor with the sealing plate of this utility model providing a sealing replacement port.

[0020] Figure 6 A bottom view of the reactor with the sealing plate of this utility model providing a sealing replacement port;

[0021] Figure 7 For the present utility model Figure 2 Enlarged view of point A in the image.

[0022] In the diagram: 1. Heat exchanger; 11. Exhaust gas inlet; 12. Refrigerant inlet; 13. Refrigerant outlet; 2. Reactor; 21. Denitrification catalyst; 22. Exhaust gas outlet; 23. Replacement port; 3. Support plate; 31. Linkage block; 32. Guide rod; 33. Screw; 34. Motor; 4. Sealing plate; 5. Card seat; 6. Card rod; 61. Telescopic guide column; 62. Helical spring; 63. Base; 64. Convex plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To address the existing issues of unstable exhaust emission indicators, please refer to... Figures 1-7 The following technical solution is provided in this embodiment:

[0025] Example 1

[0026] A tail gas treatment device includes a heat exchanger 1 and a reactor 2 connected to the heat exchanger 1 via a pipe. The bottom of the heat exchanger 1 is provided with a tail gas inlet 11. The heat exchanger 1 has two independent channels inside, one end of which is a refrigerant inlet 12 and the other end is a refrigerant outlet 13. The heat exchanger 1 is a cubic structure made of stainless steel.

[0027] The reactor 2 is equipped with a denitrification catalyst 21 inside, and a tail gas outlet 22 is provided at the lower end of the reactor 2.

[0028] Working principle: After the denitrification treatment, the exhaust gas from the workshop enters the heat exchanger 1 through the exhaust gas inlet 11. The heat exchanger 1 controls the temperature of the exhaust gas after the denitrification treatment, so that the exhaust gas can enter the reactor 2 through the pipeline at a constant temperature. In the reactor 2, the exhaust gas undergoes a denitrification reaction under the action of relevant catalysts. Finally, the exhaust gas that has been completely reacted is discharged from the exhaust gas outlet 22 and then proceeds to subsequent exhaust gas treatment.

[0029] By passing the exhaust gas after denitrification through heat exchanger 1 and reactor 2, the various indicators of the treated exhaust gas can be made more stable and better meet environmental protection requirements, while reducing certain power consumption.

[0030] Example 2

[0031] The denitrification catalyst 21 is placed on the support plate 3, which is movably connected to the reactor 2. Both ends of the support plate 3 are connected to the inner wall of the reactor 2, and the inner wall of the reactor 2 is provided with guide grooves for the support plate 3 to move horizontally.

[0032] A linkage block 31 is provided at the bottom of the support plate 3. One end of the linkage block 31 is movably connected to the guide rod 32, and the other end of the linkage block 31 is movably connected to the lead screw 33. Both the guide rod 32 and the lead screw 33 are installed inside the reactor 2.

[0033] The lead screw 33 is driven to rotate by the motor 34, which is mounted on the outer wall of the reactor 2, and the output shaft of the motor 34 is connected to the lead screw 33 through a coupling.

[0034] The reactor 2 has a replacement port 23 on its side. The replacement port 23 is sealed by a sealing plate 4. The sealing plate 4 is set on a mounting base 5, which is installed on the outer wall of the reactor 2.

[0035] The sealing plate 4 is fixed to the reactor 2 by the clamping rod 6. The clamping rod 6 is connected to the base 63 by the telescopic guide column 61 and the helical spring 62. The base 63 is installed on the outer wall of the reactor 2. The clamping rod 6 is provided with an upwardly extending convex plate 64 that penetrates the base 63.

[0036] When the denitrification catalyst 21 needs to be replaced, the convex plate 64 drives the clamping rod 6 to move. The telescopic guide column 61 and the spiral spring 62 retract due to the squeezing force until the clamping rod 6 is no longer inserted into the sealing plate 4. At this time, the sealing plate 4 moves downward on the clamping seat 5, so that the sealing plate 4 no longer seals the replacement port 23. At this time, the motor 34 is started, and the motor 34 drives the lead screw 33 to rotate, so that the linkage block 31 moves laterally under the guidance of the guide rod 32. The lateral movement of the linkage block 31 can drive the support plate 3 and the denitrification catalyst 21 to also move laterally, so that the support plate 3 and the denitrification catalyst 21 can be moved to the outside of the reactor 2 through the replacement port 23, making it easier to remove the denitrification catalyst 21 for replacement, which can improve the convenience of use.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tail gas treatment device, comprising a heat exchanger (1) and a reactor (2) connected to the heat exchanger (1) via a pipe, characterized in that: The heat exchanger (1) has a tail gas inlet (11) at the bottom. The heat exchanger (1) has two independent channels inside. One end of one channel is a refrigerant inlet (12), and the other end is a refrigerant outlet (13). The reactor (2) has a denitrification catalyst (21) inside. The reactor (2) has a tail gas outlet (22) at the bottom.

2. The exhaust gas treatment device according to claim 1, characterized in that: The denitrification catalyst (21) is placed on the support plate (3), which is movably connected to the reactor (2). Both ends of the support plate (3) are connected to the inner wall of the reactor (2), and a guide groove is provided on the inner wall of the reactor (2) for the support plate (3) to move horizontally.

3. The exhaust gas treatment device according to claim 2, characterized in that: The bottom of the support plate (3) is provided with a linkage block (31). One end of the linkage block (31) is movably connected to the guide rod (32), and the other end of the linkage block (31) is movably connected to the lead screw (33). The guide rod (32) and the lead screw (33) are both installed inside the reactor (2).

4. The exhaust gas treatment device according to claim 3, characterized in that: The lead screw (33) is driven to rotate by a motor (34), wherein the motor (34) is mounted on the outer wall of the reactor (2), and the output shaft of the motor (34) is connected to the lead screw (33) via a coupling.

5. The exhaust gas treatment device according to claim 4, characterized in that: The reactor (2) has a replacement port (23) on its side. The replacement port (23) is sealed by a sealing plate (4). The sealing plate (4) is set on a card holder (5). The card holder (5) is installed on the outer wall of the reactor (2).

6. The exhaust gas treatment device according to claim 5, characterized in that: The sealing plate (4) is fixed to the reactor (2) by a clamp (6). The clamp (6) is connected to the base (63) by a telescopic guide column (61) and a helical spring (62). The base (63) is installed on the outer wall of the reactor (2).

7. The exhaust gas treatment device according to claim 6, characterized in that: The lever (6) is provided with an upwardly extending protrusion (64), which penetrates the base (63).

Images