Tail gas absorption device

Abstract

The invention discloses a tail gas absorption device, relates to the technical field of tail gas emission, and is used for solving the problem that tail gas and liquid caustic soda are difficult to fully mix. Comprising a cylinder body, one side of the bottom of the cylinder body is provided with an air inlet, the other side of the bottom of the cylinder body is provided with a liquid inlet, and a plurality of spoilers I are arranged in the cylinder body; the conical shell is arranged at the top of the barrel, and an air outlet is formed in the top of the conical shell; the support is arranged on the outer wall of the barrel and located at the bottom of the barrel, and a circulating pump is arranged in the support; a notch is formed in one end of the first spoiler, a first baffle is arranged on the first spoiler, and the first baffle is arranged at the edge of the notch; the first spoilers are arranged in a staggered mode, a plurality of positioning holes are formed in the first spoilers, first connecting holes are further formed in the first spoilers, flow guide pipes are arranged on the positioning holes, and drainage openings are formed in the flow guide pipes. And one end of the liquid inlet pipe is connected with the circulating pump, the liquid inlet pipe sequentially penetrates through the liquid inlet and the first connecting hole, and the other end of the liquid inlet pipe is located at the top of the barrel and provided with a spraying head.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas emission, and in particular to a tail gas absorption device. Background Art

[0002] Chiral drug intermediates are chemical intermediates used to synthesize chiral drugs. In the production process of chiral drug intermediates, tail gas containing pollutants is often generated, so an absorption tower is required. An air inlet is set at the bottom of the hollow cylinder, an air outlet is set at the top, and a spray pump is set in the cylinder. The tail gas flows from the air inlet to the air outlet, and the sprayer sprays liquid alkali in the pipe, so that the tail gas contacts with the liquid alkali dispersed in the droplets in a countercurrent manner for mass transfer reaction, thereby utilizing the liquid alkali to absorb the acid gas in the tail gas.

[0003] However, because the exhaust gas sometimes has a very fast air flow speed and a high temperature, the absorption effect of the acid gas in the exhaust gas is not ideal, the exhaust gas and liquid alkali are difficult to fully contact and mix, and the spray range of the spray pump is small, the distribution of the spray liquid is not uniform, and its interception and mixing effects are also limited, resulting in the exhaust gas being carried out of the liquid outlet with liquid alkali.

[0004] Therefore, a new tail gas absorption device is needed to solve the problem of liquid alkali being entrained when the tail gas flows out. Summary of the invention

[0005] The purpose of the application is to provide a new tail gas absorption device to solve the problem of liquid alkali being entrained when the tail gas flows out.

[0006] To achieve the above objectives, the present application embodiment adopts the following technical solutions:

[0007] The cylinder body is provided with an air inlet on one side of the bottom of the cylinder body, a liquid inlet on the other side of the bottom of the cylinder body, and a plurality of baffles are provided in the cylinder body; the cone shell is provided at the top of the cylinder body, and an air outlet is provided at the top of the cone shell; the support is provided on the outer wall of the cylinder body, the support is located at the bottom of the cylinder body, and a circulating pump is provided in the support; a notch is provided at one end of the baffle, and a baffle is provided on the baffle, and the baffle is provided at the edge of the notch; a plurality of baffles are arranged in a staggered manner, a plurality of positioning holes are provided on the baffle, and a connecting hole is also provided on the baffle, A guide pipe is arranged on the positioning hole, and a drainage port is arranged on the guide pipe; a liquid inlet pipe, one end of which is connected to a circulation pump, the liquid inlet pipe passes through the liquid inlet and the connecting hole one in sequence, the other end of the liquid inlet pipe is located at the top of the cylinder, and a spray head is arranged on the other end of the liquid inlet pipe; the circulation pump drives the liquid to pass through the liquid outlet pipe, so that the liquid is sprayed onto the baffle plate one at the top through the spray head, so that the liquid flows downward through the drainage port, and the air inlet is used to allow gas to enter, so that the gas flows along the bottom of the baffle plate one and the baffle plate one in sequence, and a part of the gas contacts the liquid through the guide pipe.

[0008] Furthermore, a second spoiler is arranged in the cylinder, the second spoiler is arranged at the bottom of the cylinder, and a second baffle is arranged at the edge of the second spoiler.

[0009] Furthermore, a second connection hole is provided on the second baffle plate, and the second connection hole is located at the bottom of the second baffle plate.

[0010] Furthermore, a liquid outlet is provided at the bottom of the cylinder, a liquid outlet pipe is provided on the support, one end of the liquid outlet pipe is provided in the support, the liquid outlet pipe passes through the second connecting hole, and the other end of the liquid outlet pipe is provided above the second baffle.

[0011] Furthermore, a plurality of limit sleeves are provided in the cylinder, and the limit sleeves are located between the two spoiler plates and are used to limit the height position of the spoiler plates.

[0012] Furthermore, a water tank is provided in the support for containing liquid, and the water tank is connected to the liquid outlet pipe.

[0013] Furthermore, the number of spoiler plates 1 is 6.

[0014] Furthermore, the cylinder body and the cone shell are connected by welding, and the support and the cylinder body are connected by welding.

[0015] Furthermore, a gas inlet pipe is provided on the cylinder, a gas outlet pipe is provided on the cone shell, the gas inlet pipe and the cylinder are welded, the gas outlet pipe and the cone shell are welded, and the gas inlet pipe and the gas outlet pipe are connected to the external pipeline via a detachable flange connection.

[0016] Furthermore, a connecting pipe is provided on the support, and the connecting pipe is used to connect the liquid inlet pipe and the circulation pump.

[0017] Compared with the prior art, the present invention has the following technical effects:

[0018] An air inlet is provided at the bottom of the cylinder body for receiving the tail gas, and a liquid inlet pipe is provided for receiving the liquid alkali, so that the liquid alkali is sprayed through a spray head; a plurality of baffles are provided, and a notch is provided on the baffles so that a gap is left between one end of the baffles and the inner wall of the cylinder body, and the baffles are arranged in a staggered manner, and a baffle is provided at the notch, so that the received tail gas flows through the bottom of each baffle and the baffle in turn, thereby slowing down the travel speed of the tail gas and extending the travel path of the tail gas, preventing the tail gas from flowing too fast and failing to fully contact the liquid alkali, and preventing the tail gas from carrying the accumulated liquid alkali, and a guide pipe is provided on the baffle, and a drainage port is provided on the guide pipe, and the liquid alkali is guided to flow in a concentrated manner through the drainage port to prevent retention, so that the plurality of guide pipes on the baffle form a plurality of simple liquid alkali spraying devices, and liquid alkali is sprayed on the tail gas between every two baffles, thereby preventing the tail gas from carrying the liquid alkali when it flows out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural schematic diagram of the present invention.

[0020] Figure 2 Another structural schematic diagram of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure of several spoilers invented.

[0022] Figure 4 It is a schematic diagram of the structure of the invented flow guide tube.

[0023] Figure 5 Schematic diagram of the structure of the invented filter disc.

[0024] In the attached figure

[0025] 1. Cylinder, 2. Cone shell, 3. Support, 4. Filter plate;

[0026] 101. air inlet, 102. gas inlet pipe, 103. baffle plate 1, 104. flow guide pipe, 105. baffle plate 1, 106. limit sleeve 1, 107. limit sleeve 2, 108. baffle plate 2;

[0027] 201. Gas outlet pipe;

[0028] 301. connecting pipe, 302. liquid inlet pipe, 303. sprinkler head;

[0029] 401. protrusion one, 402. vent two, 403. vent one, 404. protrusion two;

[0030] 1041. a limiting portion, 1042. a drainage port, 1043. an adjusting sleeve, 1044. an inclined plate, 1045. a connecting rod, 1046. a connecting portion;

[0031] 1051. Gap, 1071. Connection hole three, 1081. Connection hole two, 4041. Inclined surface. DETAILED DESCRIPTION

[0032] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0036] like Figure 1 , Figure 2 , Figure 3 In this embodiment, a tail gas absorption device is provided. Figure 2 is a schematic diagram of the structure of a tail gas absorption device according to an embodiment of the present invention. Figure 2 As shown, the device comprises:

[0037] Cylinder 1, cone shell 2, support 3, gas inlet pipe 102, gas outlet pipe 201 and a plurality of baffles 103;

[0038] Among them, the cone shell 2 is arranged on the top of the cylinder 1, the support 3 is arranged on the outer wall of the cylinder 1, the support 3 is located at the bottom of the cylinder 1, the cylinder 1 and the cone shell 2 are welded and connected, the gas inlet pipe 102 and the cylinder 1 are welded and connected, the support 3 and the shell 1 are welded and connected, the gas outlet pipe 201 and the cone shell 2 are welded and connected, the baffle 103 is staggered inside the cylinder 1, and its two ends are welded and fixed to the inner wall of the cylinder 1, one end of the baffle 103 is provided with a notch, the baffle 103 is provided with a baffle 105, the baffle 105 is bent, and the baffle 105 is located at the edge of the baffle 103, so that the baffle 105 is sleeved on the baffle 103; a plurality of positioning holes are provided on the baffle 103, and a guide pipe 104 is provided on the positioning hole, and a drainage port 1042 is provided on the side wall of the guide pipe 104.

[0039] There are various methods to increase the mixing efficiency of tail gas and liquid alkali and prevent the tail gas from carrying liquid alkali, and an optional implementation method is provided in this embodiment.

[0040] Embodiment 1:

[0041] like Figure 2 , Figure 3 As shown, in this embodiment, the device for increasing the mixing efficiency of tail gas and liquid caustic soda includes:

[0042] Cylinder 1, an air inlet 101 is arranged on one side of the bottom of cylinder 1, a liquid inlet is arranged on the other side of the bottom of cylinder 1, and a plurality of baffles 103 are arranged in cylinder 1; cone shell 2, cone shell 2 is arranged on the top of cylinder 1, and an air outlet is arranged on the top of cone shell 2; support 3, support 3 is arranged on the outer wall of cylinder 1, support 3 is located at the bottom of cylinder 1, and a circulation pump is arranged in support 3; a notch is arranged at one end of baffle 103, baffle 105 is arranged on baffle 103, and baffle 105 is arranged at the edge of the notch; a plurality of baffles 103 are arranged in a staggered manner, a plurality of positioning holes are arranged on baffle 103, a connecting hole 1 is also arranged on baffle 103, and a positioning hole is arranged A guide pipe 104 is provided, and a drainage port 1042 is provided on the guide pipe 104; a liquid inlet pipe 302, one end of the liquid inlet pipe 302 is connected to a circulation pump, the liquid inlet pipe 302 passes through the liquid inlet and the connecting hole 1 in sequence, the other end of the liquid inlet pipe 302 is located at the top of the cylinder 1, and a spray head 303 is provided at the other end of the liquid inlet pipe 302; the circulation pump drives the liquid to pass through the liquid outlet pipe, so that the liquid is sprayed onto the baffle 103 at the top through the spray head 303, and the liquid flows downward through the drainage port 1042, and the air inlet 101 is used to allow gas to enter, so that the gas flows along the bottom of the baffle 103 and the baffle 105 in sequence, and a part of the gas contacts the liquid through the guide pipe 104.

[0043] An air inlet 101 is provided at the bottom of the cylinder 1 for receiving the tail gas, and a liquid inlet pipe 302 is provided for receiving the liquid alkali, so that the liquid alkali is sprayed through the spray head 303; a plurality of baffles 103 are provided, and a notch is provided on the baffle 103 so that a gap 1051 is left between one end of the baffle 103 and the inner wall of the cylinder 1, and the baffles 103 are arranged in a staggered manner, and a baffle 105 is provided at the notch, so that the received tail gas flows through the bottom of each baffle 103 and the baffle 105 in turn, thereby slowing down the travel speed of the tail gas and extending the travel path of the tail gas, preventing the tail gas from flowing too fast and failing to fully contact the liquid alkali, and preventing the tail gas from carrying the liquid alkali directly to the air outlet. In order to ensure that the exhaust gas can flow stably to the air outlet, preferably, the number of the baffle plates 103 is 6, and a guide pipe 104 is provided on the baffle plate 103, and a drainage port 1042 is provided on the guide pipe 104. The drainage port 1042 is used to guide the liquid alkali to flow in a concentrated manner to prevent retention, so that the several guide pipes 104 on the baffle plate 103 form a simple liquid alkali spraying device to spray liquid alkali on the exhaust gas at the bottom of the baffle plate 103, so that part of the exhaust gas is guided by the guide pipe 104 to flow and contact with the liquid alkali in the guide pipe 104, thereby further increasing the mixing efficiency of the liquid alkali and the exhaust gas, thereby solving the problem of preventing the exhaust gas from carrying liquid alkali and the difficulty in fully mixing the exhaust gas and the liquid alkali.

[0044] Specifically, a baffle plate 108 is further provided in the cylinder 1, and the baffle plate 108 is provided at the bottom of the cylinder 1. A baffle plate 2 is provided at the edge of the baffle plate 108. The shape of the baffle plate 108 is adapted to the inner wall of the cylinder 1. The baffle plate 108 is provided at the bottom of the cylinder 1, and a baffle plate 2 is provided on the baffle plate 108 to collect the liquid alkali sprayed from the bottom baffle plate 103.

[0045] Specifically, in order to effectively utilize the space, a water tank is provided in the support 3 for containing liquid, that is, liquid alkali, so that the water tank is arranged outside the cylinder 1 to reduce the space occupied in the tower. The water tank is connected to the liquid outlet pipe, and a connecting pipe 301 is provided on the support 3, and the connecting pipe 301 is used to connect the liquid inlet pipe 302 and the circulation pump.

[0046] Specifically, the baffle plate 2 is provided with a second connecting hole 1081, and the second connecting hole 1081 is located at the bottom of the baffle plate 2, so that the accumulated liquid alkali flows to the second connecting hole 1081, and a liquid outlet is provided at the bottom of the cylinder 1, and a liquid outlet pipe is provided on the support 3, one end of the liquid outlet pipe is arranged in the support 3, and the liquid outlet pipe connecting hole 1081 is arranged, so that the other end of the liquid outlet pipe is arranged on the baffle plate 2 108, which is used to guide the accumulated liquid alkali and make this part of the liquid alkali flow back to the water tank to form a circulation.

[0047] Specifically, in order to facilitate the adjustment of the relative position and distance between the installation of each spoiler plate 1, a plurality of limit sleeves 106 are provided in the cylinder 1, and the limit sleeves 106 are respectively located between the two spoiler plates 103, and are used to limit the height position of each spoiler plate 103; a limit sleeve 2 107 is provided on the spoiler plate 108, and a connecting hole 3 1071 is provided in the middle of the limit sleeve 2 107 for facilitating the transportation of exhaust gas.

[0048] Specifically, the connection methods include: a welding connection between the cylinder 1 and the cone shell 2, a welding connection between the support 3 and the cylinder 1, a gas inlet pipe 102 is provided on the cylinder 1, a gas outlet pipe 201 is provided on the cone shell 2, a welding connection between the gas inlet pipe 102 and the cylinder 1, a welding connection between the gas outlet pipe 201 and the cone shell 2, and the gas inlet pipe 102 and the gas outlet pipe 201 are connected to an external pipeline via a detachable flange connection.

[0049] Embodiment 2:

[0050] like Figure 4 As shown, in this embodiment, the tail gas absorption device that can increase the mixing efficiency of tail gas and liquid caustic soda is various. On the basis of the first embodiment, another structure of the device is provided here, which has:

[0051] The guide tube 104 is provided with a through hole to form a cavity, and a limiting portion 1041 is provided on the outer wall of the guide tube 104. The limiting portion 1041 is located in the middle of the guide tube 104, and the drainage port 1042 is located above the limiting portion 1041. The guide tube 104 is provided with an inclined plate 1044;

[0052] An inclined plate 1044 is provided on the draft tube 104 to slow down the flow rate of the tail gas in the draft tube 104 so that the tail gas can flow in a concentrated manner and remain in the draft tube 104 to fully contact with the liquid alkali.

[0053] Specifically, a filter disc 4 is provided in the cavity, the filter disc 4 is located below the drainage port 1042, a protrusion 401 is provided in the middle of the filter disc 4, a vent 403 is provided in the middle of the protrusion 401, and a plurality of vents 402 are provided on the protrusion 401; by disposing a filter disc 4 in the guide tube 104, a protrusion 401 is provided on the filter disc 4, an opening is provided in the middle of the protrusion 401, and a plurality of vents 402 are provided on the surface of the protrusion 401, the filter disc 4 is disposed below the drainage port 1042, so that liquid alkali is transported through the vents 402, and a vortex area is formed in the cavity through the cooperation of the filter disc 4 with a part of the conical protrusion and the inclined plate 1044, so that the exhaust gas in the guide tube 104 is further in contact with the liquid alkali component.

[0054] Embodiment three:

[0055] like Figure 5As shown, on the basis of the second embodiment, a plurality of second protrusions 404 are provided at the edge of the filter disc 4, a slope 4041 is provided on one side of the second protrusion 404, a connecting portion 1046 is provided on the guide tube 104, an adjustment sleeve 1043 is movably provided in the connecting portion 1046, a slide groove is symmetrically provided on the inner wall at the bottom of the adjustment sleeve 1043, a connecting rod 1045 is provided at the bottom of the inclined plate 1044, a resisting portion is provided at the bottom of the connecting rod 1045, and a connecting rod is slidably provided in the slide groove;

[0056] By providing a raised portion 404 at the edge of the filter disc 4, and providing an inclined surface 4041 on the raised portion 404, and providing an adjusting sleeve 1043 in the guide tube 104, a slide groove is provided in the adjusting sleeve 1043, and a vertical connecting rod 1045 is provided at the bottom of the inclined plate 1044, the position of the connecting rod 1045 located in the slide groove can be adjusted by rotating the adjusting sleeve 1043, and the relative position of the interference portion and the inclined surface 4041 is adjusted, so that the interference portion of the connecting rod 1045 contacts the inclined surface 4041, and the connecting rod 1045 moves up and down, driving the inclined plate 1044 to move up and down, thereby adjusting the height position of the inclined plate 1044 of the baffle plate 103 at different heights, preventing the exhaust gas in the top guide tube 104 from being retained and unable to be taken out, preventing the blockage of liquid alkali, further increasing the contact efficiency between the exhaust gas and the liquid alkali, and solving the problem of large difference in gas temperature and flow rate at different heights after adopting the staggered baffle plate 103.

[0057] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A tail gas absorption device, characterized in that: include: A cylinder, wherein one side of the bottom of the cylinder is provided with an air inlet, the other side of the bottom of the cylinder is provided with a liquid inlet, and a plurality of baffles are provided in the cylinder; A cone shell, wherein the cone shell is arranged on the top of the cylinder, and an air outlet is arranged on the top of the cone shell; A support, wherein the support is arranged on the outer wall of the cylinder, the support is located at the bottom of the cylinder, and a circulating pump is arranged in the support; A notch is provided at one end of the spoiler plate, and a baffle plate 1 is provided on the spoiler plate, and the baffle plate 1 is provided at the edge of the notch; A plurality of the baffle plates are arranged in a staggered manner, a plurality of positioning holes are arranged on the baffle plate, a connecting hole is also arranged on the baffle plate, a guide pipe is arranged on the positioning hole, and a drainage port is arranged on the guide pipe; A liquid inlet pipe, one end of which is connected to the circulation pump, the liquid inlet pipe passes through the liquid inlet and the first connecting hole in sequence, the other end of which is located at the top of the cylinder, and the other end of which is provided with a spray head; The circulation pump drives the liquid to pass through the liquid inlet pipe, so that the liquid is sprayed onto the baffle plate 1 at the top through the sprinkler head, and the liquid flows downward through the drainage port. The air inlet is used to allow gas to enter, so that the gas flows along the bottom of the baffle plate 1 and the baffle plate 1 in sequence, and a part of the gas contacts the liquid through the guide pipe.

2. A tail gas absorption device according to claim 1, characterized in that: A second spoiler is also arranged in the cylinder, and the second spoiler is arranged at the bottom of the cylinder. A second baffle is arranged at the edge of the second spoiler.

3. A tail gas absorption device according to claim 2, characterized in that: The second baffle plate is provided with a second connection hole, and the second connection hole is located at the bottom of the second baffle plate.

4. A tail gas absorption device according to claim 3, characterized in that: A liquid outlet is provided at the bottom of the cylinder, a liquid outlet pipe is provided on the support, one end of the liquid outlet pipe is provided in the support, the liquid outlet pipe passes through the second connecting hole, and the other end of the liquid outlet pipe is provided above the second baffle.

5. The tail gas absorption device according to claim 1, characterized in that: A plurality of limiting sleeves are arranged in the cylinder, and the limiting sleeves are located between the two spoiler plates and are used to limit the height position of the spoiler plates.

6. The tail gas absorption device according to claim 4, characterized in that: A water tank is arranged in the support for containing the liquid, and the water tank is connected to the liquid outlet pipe.

7. The tail gas absorption device according to claim 1, characterized in that: The number of the spoiler plates 1 is 6.

8. The tail gas absorption device according to claim 1, characterized in that: The cylinder and the cone shell are connected by welding, and the support and the cylinder are connected by welding.

9. The tail gas absorption device according to claim 1, characterized in that: The cylinder is provided with a gas inlet pipe, the cone shell is provided with a gas outlet pipe, the gas inlet pipe and the cylinder are welded and connected, the gas outlet pipe and the cone shell are welded and connected, and the gas inlet pipe and the gas outlet pipe are connected to an external pipeline via a detachable flange connection.

10. The tail gas absorption device according to claim 1, characterized in that: The support is provided with a connecting pipe, and the connecting pipe is used to connect the liquid inlet pipe and the circulation pump.

Images