Tail gas treatment device for toluene nitration

Abstract

The tail gas treatment device comprises a first water tank and a second water tank, the outer wall of one side of the first water tank is connected with a feeding pipe, the upper end of the second water tank is connected with a water injection pipe, the interior of the second water tank is connected with a water collecting pipe, and a plurality of water outlets are formed outside the water collecting pipe. A connecting groove is formed in the outer wall of the front side of the second water tank, a filtering mechanism is arranged in the connecting groove, the filtering mechanism penetrates through the connecting groove and extends into the second water tank, and a water suction pump and a water guide pump are arranged between the second water tank and the first water tank. According to the tail gas treatment device, the problem that the filtering mechanism needs to be cleaned and replaced to ensure the filtering effect when the filtering mechanism in the tail gas treatment device is used for a long time in the process of treating harmful gas and dust is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tail gas treatment devices, and in particular relates to a tail gas treatment device for toluene nitration. Background Art

[0002] Tail gas treatment equipment is widely used in various manufacturing industries such as semiconductors, pharmaceuticals, and solar energy. Its main function is to provide tail gas treatment for process equipment to ensure that process gases meet emission requirements after treatment.

[0003] As manufacturing processes evolve, the variety of process gases increases, and ventilation volumes increase, posing significant challenges to the processing capacity of exhaust gas treatment equipment. This is particularly true in the dye and pigment industries, where processes generate large quantities of hazardous gases and dust, which require harmless treatment by exhaust gas treatment equipment.

[0004] However, there are some problems with the existing technology: in the process of treating harmful gases and dust, when the filtering mechanism inside the exhaust gas treatment device is used for a long time, the filtering mechanism needs to be cleaned and replaced to ensure the filtering effect. Therefore, we propose an exhaust gas treatment device for toluene nitration. Utility Model Content

[0005] In response to the problems existing in the above-mentioned technology, the utility model provides an exhaust gas treatment device for toluene nitration, which solves the problem that during the treatment of harmful gases and dust, the filtering mechanism inside the exhaust gas treatment device needs to be cleaned and replaced when it is used for a long time to ensure the filtering effect.

[0006] The utility model is implemented as follows: a tail gas treatment device for toluene nitration comprises a first water tank and a second water tank, wherein the outer wall of one side of the first water tank is connected to a feed pipe, the upper end of the second water tank is connected to a water injection pipe, the interior of the second water tank is connected to a water collecting pipe, a plurality of water outlets are provided on the outside of the water collecting pipe, a connecting groove is provided on the front outer wall of the second water tank, a filtering mechanism is provided inside the connecting groove, the filtering mechanism passes through the connecting groove and extends to the interior of the second water tank, a water pump and a water guide pump are provided between the second water tank and the first water tank, the front and rear ends of the water pump are respectively connected to a water pumping pipe and a first water inlet pipe, the water pumping pipe extends to the interior of the first water tank, the first water inlet pipe extends to the interior of the second water tank, the front and rear ends of the water guide pump are respectively connected to the second water inlet pipe and the water guide pipe, the second water inlet pipe extends to the interior of the first water tank, the water guide pipe extends to the interior of the first water tank and is connected to the water collecting pipe.

[0007] As a preferred embodiment of the present invention, a detachable sealing cover is connected to the upper end of the water injection pipe.

[0008] As a preferred embodiment of the present invention, a group of card slots are correspondingly provided on the inner wall of the second water tank, the front sides of the card slots are communicated with the connecting slots, and the connecting slots are located between the card slots.

[0009] As a preferred embodiment of the present invention, the filtering mechanism includes a frame arranged in a rectangular shape, a filter screen is connected to the bottom of the frame, a filter cloth is connected to the inside of the frame, and the filter cloth is located on the upper end of the filter screen.

[0010] As a preferred embodiment of the present invention, the front outer wall of the frame is connected to a limit plate, and the length of the limit plate is greater than the total length of the connecting groove and the clamping groove.

[0011] As a preferred embodiment of the present invention, the left and right outer walls of the frame are integrally formed with a card plate, and the card plate fits into the card slot.

[0012] As a preferred embodiment of the present invention, the upper end surface of the frame is symmetrically provided with multiple groups of fixing grooves with T-shaped cross sections, and the outer walls on both sides of the filter cloth are connected with multiple fixing blocks that fit into the fixing grooves.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. In the present invention, the tail gas enters the first water tank through the feed pipe, and the tail gas is fused with the water. After a large amount of tail gas is fused, the water in the first water tank gradually becomes turbid. The water in the first water tank is pumped into the second water tank through the water guide pump, and the turbid water is filtered by the filter mechanism. Activated carbon is placed in the second water tank, and the filtered water is purified by the activated carbon, so that the water gradually becomes clear. The water pump is used to introduce it into the first water tank to form a circulation structure, reduce the waste of water resources, and achieve the purpose of saving resources. After the filter mechanism is used for a long time, it needs to be cleaned. It only needs to be pulled out of the second water tank to take out the filter mechanism for cleaning, so as to avoid long-term use affecting the filtering effect.

[0015] 2. The utility model inserts the card plate into the card slot, which is convenient for limiting the frame when the frame is extended into the connecting slot. The limit plate on the frame contacts the outer wall of the second water tank when the frame extends into the second water tank, further limiting the frame. The limit plate makes it convenient to pull the frame out of the second water tank, making it convenient to replace and clean the filter cloth inside the frame. The filter cloth is inserted into the fixed slot through the fixing block, which makes it convenient to install the filter cloth inside the frame, disassemble and install the filter cloth, and replace and clean the filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic cross-sectional view of an embodiment of the present invention;

[0017] Figure 2It is a front view schematic diagram of the second water tank provided by the embodiment of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of a second water tank provided by an embodiment of the present utility model;

[0019] Figure 4 The embodiment of the present utility model provides Figure 1 Enlarged schematic diagram of area a in the middle;

[0020] Figure 5 This is a three-dimensional schematic diagram of a filtering mechanism provided by an embodiment of the utility model;

[0021] Figure 6 It is a cross-sectional schematic diagram of a filtering mechanism provided by an embodiment of the present utility model.

[0022] In the figure: 1. First water tank; 2. Second water tank; 3. Filter mechanism; 4. Suction pump; 5. Water guide pump; 11. Feed pipe; 21. Water injection pipe; 22. Water collecting pipe; 23. Clamping slot; 24. Connecting slot; 31. Frame; 32. Limiting plate; 33. Filter cloth; 34. Filter screen; 41. Suction pipe; 42. First water inlet pipe; 51. Second water inlet pipe; 52. Water guide pipe; 211. Sealing cover; 221. Water outlet; 311. Clamping plate; 312. Fixing slot; 331. Fixing block. DETAILED DESCRIPTION

[0023] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0024] The structure of the present utility model is described in detail below with reference to the accompanying drawings.

[0025] Example 1:

[0026] like Figure 1As shown, an embodiment of the present invention provides an exhaust gas treatment device for toluene nitration, comprising a first water tank 1 and a second water tank 2, wherein the outer wall of one side of the first water tank 1 is connected to a feed pipe 11, the upper end of the second water tank 2 is connected to a water injection pipe 21, the interior of the second water tank 2 is connected to a water collecting pipe 22, a plurality of water outlets 221 are provided on the outside of the water collecting pipe 22, a connecting groove 24 is provided on the front outer wall of the second water tank 2, a filtering mechanism 3 is provided inside the connecting groove 24, the filtering mechanism 3 passes through the connecting groove 24 and extends to the interior of the second water tank 2, a water pump 4 and a water guide pump 5 are provided between the second water tank 2 and the first water tank 1, the front and rear ends of the water pump 4 are respectively connected to a water pumping pipe 41 and a first water inlet pipe 42, the water pumping pipe 41 extends to the interior of the first water tank 1, the first water inlet pipe 42 extends to the interior of the second water tank 2, and the front and rear ends of the water guide pump 5 are respectively connected to the second water inlet pipe 51 And the water pipe 52, the second water inlet pipe 51 extends to the inside of the first water tank 1, and the water pipe 52 extends to the inside of the first water tank 1 and is connected to the water collecting pipe 22; the exhaust gas enters the inside of the first water tank 1 through the feed pipe 11, and the exhaust gas merges with the water. After a large amount of exhaust gas is merged, the water in the first water tank 1 gradually becomes turbid, and the water in the first water tank 1 is pumped into the inside of the second water tank 2 through the water pump 5, and the turbid water is filtered by the filtering mechanism 3. Activated carbon is placed in the inside of the second water tank 2, and the filtered water is purified by the activated carbon, so that the water gradually becomes clear, and is introduced into the inside of the first water tank 1 by the water pump 4, forming a circulation structure, reducing the waste of water resources, and achieving the purpose of saving resources. After long-term use, the filtering mechanism 3 needs to be cleaned. It only needs to be pulled out of the second water tank 2 to take out the filtration for cleaning, so as to avoid long-term use affecting the filtering effect.

[0027] like Figure 1 As shown, the upper end of the water injection pipe 21 is connected to a detachable sealing cover 211; the sealing cover 211 is threadedly connected to the water injection pipe 21, which is convenient for disassembly and assembly of the sealing cover 211. When the sealing cover 211 is installed, it is convenient to filter turbid water and prevent turbid air from being discharged.

[0028] like Figures 1 to 4 As shown, a group of card slots 23 are correspondingly provided on the inner wall of the second water tank 2, and the front sides of the card slots 23 are connected to the connecting slots 24, and the connecting slots 24 are located between the card slots 23; through the provision of the card slots 23 and the connecting slots 24, it is convenient to install the filter mechanism 3 inside the second water tank 2, and to facilitate the disassembly and assembly of the filter mechanism 3.

[0029] like Figure 5 and Figure 6As shown, the filtering mechanism 3 includes a rectangular frame 31, a filter screen 34 is connected to the bottom of the frame 31, a filter cloth 33 is connected to the inside of the frame 31, and the filter cloth 33 is located at the upper end of the filter screen 34; the front outer wall of the frame 31 is connected to a limit plate 32, and the length of the limit plate 32 is greater than the total length of the connecting groove 24 and the card slot 23; the left and right outer walls of the frame 31 are integrally formed with a card plate 311, and the card plate 311 fits with the card slot 23; the upper end surface of the frame 31 is symmetrically provided with a plurality of fixed grooves 312 with a T-shaped cross section, and the left and right outer walls of the filter cloth 33 are connected with a plurality of fixed grooves 312 that fit with the fixed grooves 312 The fixing block 331 is inserted into the card slot 23 through the card plate 311, so that the frame 31 is limited when it is extended into the connecting groove 24. The limiting plate 32 on the frame 31 contacts the outer wall of the second water tank 2 when the frame 31 is extended into the second water tank 2, further limiting the frame 31. The limiting plate 32 is used to facilitate the frame 31 to be pulled out from the second water tank 2, so that the filter cloth 33 inside the frame 31 can be replaced and cleaned. The filter cloth 33 is inserted into the fixing groove 312 through the fixing block 331, so that the filter cloth 33 can be installed in the frame 31, and the filter cloth 33 can be disassembled and replaced.

[0030] Working principle of embodiment 1:

[0031] During use, the tail gas enters the first water tank 1 through the feed pipe 11, and the tail gas merges with the water. When the water merges with a large amount of tail gas, the water in the first water tank 1 gradually becomes turbid. The water guide pump 5 is started, and the second water inlet pipe 51 guides the turbid water in the first water tank 1 into the water guide pipe 52. The turbid water is guided into the second water tank 2 through the water guide pipe 52. When the turbid water enters the second water tank 2, it falls onto the filter cloth 33. The filter cloth 33 filters the turbid water and removes impurities. The water is filtered to the lower end, and the second water tank 2 Activated carbon is placed inside, and the filtered water is purified by the activated carbon, making the water gradually clear, and then the water pump 4 is started, and the first water inlet pipe 42 introduces the clean water into the water pumping pipe 41, and the water pumping pipe 41 introduces the clean water into the first water tank 1, forming a circulation structure, reducing the waste of water resources, and achieving the purpose of saving resources. After long-term use, the filter mechanism 3 needs to be cleaned. It only needs to be pulled out of the second water tank 2, and the filtration can be taken out for cleaning to avoid long-term use affecting the filtering effect.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tail gas treatment device for toluene nitration, comprising a first water tank (1) and a second water tank (2), characterized in that: The outer wall of one side of the first water tank (1) is connected to a feed pipe (11), the upper end of the second water tank (2) is connected to a water injection pipe (21), the interior of the second water tank (2) is connected to a water collecting pipe (22), a plurality of water outlets (221) are provided on the outside of the water collecting pipe (22), a connecting groove (24) is provided on the front outer wall of the second water tank (2), a filter mechanism (3) is provided inside the connecting groove (24), the filter mechanism (3) passes through the connecting groove (24) and extends to the interior of the second water tank (2), the second water tank (2) and the first water tank (1) are connected. A water pump (4) and a water guide pump (5) are provided in the middle. The water pump (4) is connected to a water pump pipe (41) and a first water inlet pipe (42) at the front and rear ends respectively. The water pump pipe (41) extends to the interior of the first water tank (1). The first water inlet pipe (42) extends to the interior of the second water tank (2). The water guide pump (5) is connected to a second water inlet pipe (51) and a water guide pipe (52) at the front and rear ends respectively. The second water inlet pipe (51) extends to the interior of the first water tank (1). The water guide pipe (52) extends to the interior of the first water tank (1) and is connected to a water collecting pipe (22).

2. The tail gas treatment device for toluene nitration according to claim 1, characterized in that: The upper end of the water injection pipe (21) is connected to a detachable sealing cover (211).

3. The tail gas treatment device for toluene nitration according to claim 1, characterized in that: A group of card slots (23) are correspondingly provided on the inner wall of the second water tank (2), the front sides of the card slots (23) are communicated with the connecting slots (24), and the connecting slots (24) are located between the card slots (23).

4. The tail gas treatment device for toluene nitration according to claim 1, characterized in that: The filtering mechanism (3) comprises a frame (31) arranged in a rectangular shape, a filter screen (34) is connected to the bottom of the frame (31), a filter cloth (33) is connected inside the frame (31), and the filter cloth (33) is located at the upper end of the filter screen (34).

5. A tail gas treatment device for toluene nitration according to claim 4, characterized in that: The front outer wall of the frame (31) is connected to a limiting plate (32), and the length of the limiting plate (32) is greater than the total length of the connecting groove (24) and the clamping groove (23).

6. The tail gas treatment device for toluene nitration according to claim 5, characterized in that: A clamping plate (311) is integrally formed on the left and right outer walls of the frame (31), and the clamping plate (311) fits in the clamping slot (23).

7. The tail gas treatment device for toluene nitration according to claim 6, characterized in that: The upper end surface of the frame (31) is symmetrically provided with a plurality of fixing grooves (312) with T-shaped cross sections, and the outer walls on both sides of the filter cloth (33) are connected with a plurality of fixing blocks (331) that fit with the fixing grooves (312).

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