Waste gas absorption tower for ammonium chloride production

Abstract

The utility model discloses a waste gas absorption tower for ammonium chloride production, which relates to the technical field of waste gas treatment for ammonium chloride production and comprises a tower body, two groups of supporting legs are symmetrically and fixedly connected to the bottom of the tower body, and a plurality of annular pipes are fixedly connected to the inner side wall of the tower body in sequence from top to bottom through fixing sleeves. A plurality of atomizing nozzles are annularly communicated with the peripheral surface of the annular pipe at equal angles, and the diversion assembly is arranged in the tower body and comprises a plurality of flow guide plates which are sequentially and fixedly connected to the inner side wall of the tower body from top to bottom. When the absorption tower is used, the plurality of flow guide plates and flow guide holes are matched with the plurality of annular pipes and the atomizing nozzles on the annular pipes, so that the occupied area when gas flows can be reduced, the volume of treatment liquid sprayed by the atomizing nozzles can be reduced, the use amount of the treatment liquid is reduced, and the waste gas purification treatment cost of the absorption tower is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment for ammonium chloride production, and particularly relates to an exhaust gas absorption tower for ammonium chloride production. Background Technique

[0002] Ammonium chloride, abbreviated as chloroammonium, is an inorganic substance, which refers to the ammonium salt of hydrochloric acid. It is mostly a by-product of the soda-making industry. It is in the form of small square or octahedral crystals that are white or slightly yellowish. Ammonium chloride has a relatively high and stable fertilizer effect in paddy fields because chlorine can not only inhibit nitrification in paddy fields but also contribute to the formation of rice straw fibers, increasing toughness, reducing rice lodging and pest attacks.

[0003] In the process of producing and preparing ammonium chloride, a large amount of waste gas will inevitably be generated. These waste gases will contain some harmful chemical components. Before being discharged into the atmosphere, these waste gases need to be fully and thoroughly purified to ensure the safety of the atmospheric ecological environment. The exhaust gas absorption tower is a device widely used for purifying waste gas. Existing exhaust gas absorption towers directly introduce waste gas into the bottom of the exhaust gas tower, and then the waste gas flows upward along the exhaust gas tower. Subsequently, the corresponding treatment agent is sprayed down through the spray pipe on the upper side of the exhaust gas tower to come into full contact with the waste gas to achieve the purpose of purifying the waste gas. However, in the existing exhaust gas absorption tower, the treatment agent can only come into contact with the waste gas once, and the purification effect is poor. It often needs to be purified repeatedly, seriously reducing the purification efficiency of the waste gas.

[0004] The Chinese invention patent with the patent application number CN201711408212.3 records an exhaust gas absorption tower. By setting the first spray head and the second spray head to spray out clean water and treatment liquid respectively, the waste gas comes into contact with the treatment liquid in turn during the process of flowing from the lower side to the upper side of the absorption tower body, and then passes through the filter layer to be filtered, and finally comes into contact with clean water, thus enhancing the purification effect of the waste gas. However, in the above-mentioned exhaust gas absorption tower, the waste gas directly flows naturally from the lower side to the upper side of the absorption tower body, and the waste gas fills the entire interior of the exhaust gas tower body. At this time, in order to improve the purification effect of the waste gas, it is necessary to increase the spraying amount so that clean water and the treatment agent fill the interior space of the exhaust gas tower body, which causes waste of clean water or the treatment agent and increases the cost of waste gas purification treatment. Content of the Utility Model

[0005] The purpose of the utility model is to provide an exhaust gas absorption tower for ammonium chloride production, so as to solve the problem that in the existing exhaust gas absorption tower, the waste gas directly flows naturally from the lower side to the upper side of the absorption tower body, and the waste gas fills the entire interior of the exhaust gas tower body. At this time, in order to improve the purification effect of the waste gas, it is necessary to increase the spraying amount so that clean water and the treatment agent fill the interior space of the exhaust gas tower body, which causes waste of clean water or the treatment agent and increases the cost of waste gas purification treatment as mentioned in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: An exhaust gas absorption tower for ammonium chloride production, comprising a tower body. Two groups of support legs are symmetrically and fixedly connected to the bottom of the tower body. A plurality of annular pipes are fixedly connected to the inner side wall of the tower body from top to bottom through fixing sleeves. A plurality of atomizing nozzles are annularly communicated with the outer peripheral surface of the annular pipe at equal angles. It also includes a flow splitting component arranged inside the tower body. The flow splitting component includes a plurality of flow guiding plates fixedly connected to the inner side wall of the tower body from top to bottom. A flow guiding hole is opened at the central position of the top of the flow guiding plate. The number of the plurality of flow guiding plates is equal to the number of the annular pipes and they are staggered. The flow guiding plate is located below the corresponding annular pipe.

[0007] Preferably, the diameters of the flow guiding holes on the plurality of flow guiding plates decrease from top to bottom. The advantage of this setting is that the exhaust gas located on the lower side and containing more harmful substances can be more effectively concentrated. In this way, under the premise that the exhaust gas flow rate is relatively fast, the treatment liquid can still purify a large amount of harmful substances. And the higher the exhaust gas goes, the fewer harmful substances it contains. At this time, reducing the concentration of the exhaust gas can reduce the upward flow rate of the exhaust gas and extend the contact time between the exhaust gas and the treatment liquid, so as to more effectively purify the exhaust gas and improve the exhaust gas treatment efficiency as much as possible on the premise of more effectively purifying the exhaust gas, and further reduce the cost required for exhaust gas purification treatment.

[0008] Preferably, the flow guiding plate is in the shape of a frustum-shaped hollow tube, and both the inner side wall and the outer side wall of the flow guiding plate are frustum-shaped. The advantage of this setting is that it can better guide the exhaust gas, enabling the exhaust gas to flow smoothly from bottom to top, ensuring that the purification treatment process can proceed smoothly, and improving the reliability of the device.

[0009] Preferably, the flow splitting component further includes a plurality of flow splitting parts fixedly connected to the inner side wall of the tower body from top to bottom through connecting rods. The number of the flow splitting parts is equal to the number of the flow guiding plates and they are staggered. The flow splitting part is located directly above the corresponding flow guiding plate. The flow splitting part includes a flow splitting block. A plurality of flow splitting plates are fixedly connected to the outer peripheral surface of the flow splitting block at equal angles in a ring shape. The flow splitting plates on the two adjacent flow splitting blocks up and down are staggered. The flow splitting block is in an inverted conical shape. The advantage of this setting is that the exhaust gas flowing out from the flow guiding hole can be split and blocked by the staggered flow splitting plates. On the one hand, it can make the exhaust gas more fully contact with the treatment liquid. On the other hand, it can extend the flow time of the exhaust gas inside the tower body to increase the contact reaction time with the treatment liquid, thereby effectively improving the purification treatment effect of the exhaust gas, avoiding subsequent repeated treatment of the exhaust gas, effectively improving the purification treatment efficiency, and reducing the purification treatment cost.

[0010] Preferably, it further includes a liquid medicine circulation component. The liquid medicine circulation component includes multiple groups of straight pipes. The bottoms of the multiple groups of straight pipes extend to the bottom of the tower body. Liquid suction pumps are installed on each of the multiple groups of straight pipes. Liquid delivery pipes are communicated with each of the multiple groups of straight pipes. The multiple groups of liquid delivery pipes are respectively communicated with the outer circumferences of multiple annular pipes. The advantage of this setting is that it can recycle the treated liquid sprayed out, maximize the purification effect of the treated liquid, reduce the cost of the purification process, and improve the economy and practicality of the absorption tower.

[0011] Preferably, the liquid medicine circulation component further includes an annular liquid collecting plate fixedly sleeved on the lower side of the outer circumference of the flow guiding plate. The bottoms of the multiple liquid collecting plates are communicated with a liquid collecting box through through holes. The tops of the multiple groups of straight pipes are respectively communicated with the bottoms of the multiple liquid collecting boxes. The bottoms of the multiple groups of straight pipes are respectively communicated with the outer circumferences of multiple annular pipes through liquid delivery pipes. The treated liquid at the bottom of the tower body is sent into the uppermost annular pipe through the liquid delivery pipe. The treated liquid on the uppermost liquid collecting plate is sent into the lowermost annular pipe through the liquid delivery pipe. The treated liquid on the lowermost liquid collecting plate is sent into the second annular pipe from the top through the liquid delivery pipe. The treated liquid on the second liquid collecting plate from the top is sent into the second annular pipe from the bottom through the liquid delivery pipe, and so on to complete the recycling of the treated liquid. The advantage of this setting is that it can send the treated liquid that contacts and reacts with more harmful substances at the lower side into the upper annular pipe for spraying again and flowing to contact the waste gas containing less harmful substances at the upper side, while the treated liquid that contacts and reacts with fewer harmful substances at the upper side is sent into the lower annular pipe for spraying again and flowing to contact the waste gas containing more harmful substances. In this way, the speed of waste gas purification treatment can be increased on the premise of fully utilizing the treated liquid, the time required for purification is shortened, and the cost required for waste gas purification treatment is effectively reduced.

[0012] In summary, the technical effects and advantages of the present utility model are as follows:

[0013] 1. In the present utility model, by setting multiple flow guiding plates and flow guiding holes in cooperation with multiple annular pipes and atomizing nozzles on the annular pipes, the area occupied by the gas flow can be reduced. In this way, the volume of the treated liquid sprayed out by the atomizing nozzles can be reduced, the amount of the treated liquid used is reduced, and the cost of waste gas purification treatment by the absorption tower is effectively reduced.

[0014] 2. In the present utility model, through the provided liquid medicine circulation component, the treatment liquid located on the lower side and in contact with more harmful substances for reaction can be sent into the upper annular pipe for spraying again and flowing to contact the waste gas containing less harmful substances on the upper side, while the treatment liquid located on the upper side and in contact with fewer harmful substances for reaction is sent into the lower annular pipe for spraying again and contacting the waste gas containing more harmful substances. In this way, on the premise of making full use of the treatment liquid, the speed of waste gas purification treatment can be increased, the time required for purification is shortened, and the cost required for waste gas purification treatment is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 Structural schematic diagram of the waste gas absorption tower for ammonium chloride production in the embodiment of the present utility model;

[0017] Figure 2 First partial structural schematic diagram of the waste gas absorption tower for ammonium chloride production in the embodiment of the present utility model;

[0018] Figure 3 Second partial structural schematic diagram of the waste gas absorption tower for ammonium chloride production in the embodiment of the present utility model;

[0019] Figure 4 Third partial structural schematic diagram of the waste gas absorption tower for ammonium chloride production in the embodiment of the present utility model;

[0020] Figure 5 Structural schematic diagram of the annular pipe in the embodiment of the present utility model;

[0021] Figure 6 Structural schematic diagram of the flow splitting member in the embodiment of the present utility model.

[0022] In the figure: 1. Tower body; 11. Support leg; 21. Exhaust pipe; 22. Drain pipe; 23. Air inlet pipe; 3. Annular pipe; 31. Atomizing nozzle; 32. Liquid inlet pipe; 4. Flow splitting assembly; 41. Deflector; 42. Flow splitting member; 421. Flow splitting block; 422. Flow splitting plate; 5. Liquid medicine circulation component; 51. Straight pipe; 52. Liquid suction pump; 53. Liquid delivery pipe; 54. Liquid collecting plate; 55. Liquid collecting box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0024] Embodiment 1

[0025] Please refer to Figures 1-6 the waste gas absorption tower for ammonium chloride production shown in the figure, which includes a tower body 1. Two groups of support legs 11 are symmetrically and fixedly connected to the bottom of the tower body 1. A discharge pipe 21 is connected to the center of the top of the tower body 1, and the discharge pipe 21 is used to discharge the purified gas. A liquid discharge pipe 22 is connected to the top of the tower body 1, and the liquid discharge pipe 22 discharges the treatment liquid containing harmful substances. An intake pipe 23 is connected to the lower side of the outer peripheral surface of the tower body 1, and the intake pipe 23 is used to introduce the waste gas into the bottom of the tower body 1. A plurality of annular pipes 3 are fixedly connected to the inner side wall of the tower body 1 from top to bottom through fixing sleeves. A plurality of atomizing nozzles 31 are annularly and equally angularly connected to the outer peripheral surface of the annular pipe 3. An inlet pipe 32 is connected to the outer peripheral surface of the uppermost annular pipe 3. One end of the inlet pipe 32 away from the uppermost annular pipe 3 penetrates the side wall of the tower body 1 and extends to the outside thereof. The inlet pipe 32 is used to send the brand-new treatment liquid into the uppermost annular pipe 3. It also includes a flow splitting component 4 arranged inside the tower body 1. The flow splitting component 4 includes a plurality of guide plates 41 fixedly connected to the inner side wall of the tower body 1 from top to bottom. A guide hole is opened at the center of the top of the guide plate 41. The number of the plurality of guide plates 41 is equal to the number of the annular pipes 3 and they are staggered. The guide plate 41 is located below the corresponding annular pipe 3.

[0026] Refer to Figures 2-4 , the diameters of the guide holes on the plurality of guide plates 41 decrease from top to bottom in sequence.

[0027] Specifically, it can make the waste gas located on the lower side and containing more harmful substances be more effectively concentrated. In this way, it can make the treatment liquid still be able to purify and treat a large amount of harmful substances on the premise that the waste gas flow rate is relatively fast. And the more the waste gas goes up, the less harmful substances it contains. At this time, reducing the concentration of the waste gas can reduce the upward flow rate of the waste gas and extend the contact time between the waste gas and the treatment liquid, so as to more effectively purify the waste gas and improve the waste gas treatment efficiency as much as possible on the premise, and then reduce the cost required for waste gas purification treatment.

[0028] Refer to Figures 2-4 , the guide plate 41 is in the shape of a frustum-shaped hollow tube, and both the inner side wall and the outer side wall of the guide plate 41 are frustum-shaped.

[0029] Specifically, it can better guide the waste gas, enabling the waste gas to flow smoothly from bottom to top, ensuring the smooth progress of the purification process, and improving the reliability of the equipment.

[0030] Reference Figure 2 、 Figure 3 、 Figure 4 And Figure 6 Furthermore, the shunt assembly 4 further includes a plurality of shunt members 42 fixedly connected to the inner side wall of the tower body 1 from top to bottom through connecting rods. The number of shunt members 42 is equal to the number of flow guide plates 41 and they are staggered. The shunt members 42 are located directly above the corresponding flow guide plates 41. Each shunt member 42 includes a shunt block 421. A plurality of shunt plates 422 are fixedly connected to the outer peripheral surface of the shunt block 421 in an equiangular and annular manner. The shunt plates 422 on two adjacent shunt blocks 421 are staggered. The shunt block 421 is in an inverted conical shape.

[0031] Specifically, the staggered shunt plates 422 can shunt and block the waste gas flowing out of the flow guide holes. On the one hand, it can make the waste gas contact the treatment liquid more fully. On the other hand, it can extend the flow time of the waste gas inside the tower body 1 to increase the contact reaction time with the treatment liquid, thereby effectively improving the purification effect of the waste gas, avoiding repeated treatment of the waste gas subsequently, effectively improving the purification efficiency, and reducing the purification cost.

[0032] Embodiment 2

[0033] According to Embodiment 1, please refer to Figure 3 And Figure 4 It further includes a liquid medicine circulation assembly 5. The liquid medicine circulation assembly 5 includes multiple groups of straight pipes 51. The bottom ends of the multiple groups of straight pipes 51 extend to the bottom of the tower body 1. Liquid suction pumps 52 are installed on each of the multiple groups of straight pipes 51. Liquid delivery pipes 53 are connected to each of the multiple groups of straight pipes 51. The multiple groups of liquid delivery pipes 53 are respectively connected to the outer peripheral surface of the multiple annular pipes 3.

[0034] Specifically, it can recycle the sprayed treatment liquid, maximize the purification effect of the treatment liquid, reduce the cost of the purification process, and improve the economy and practicality of the absorption tower.

[0035] Embodiment 3

[0036] According to Embodiment 1 or 2, please refer to Figure 3 And Figure 4, the liquid medicine circulation assembly 5 further includes an annular liquid collecting plate 54 fixedly sleeved on the lower side of the outer peripheral surface of the diversion plate 41. The bottoms of multiple liquid collecting plates 54 are communicated with a liquid collecting box 55 through through holes. The tops of multiple straight pipes 51 are respectively connected to the bottoms of multiple liquid collecting boxes 55, and the bottoms of multiple straight pipes 51 are respectively connected to the outer peripheral surfaces of multiple annular pipes 3 through a liquid delivery pipe 53. The treatment liquid at the bottom of the tower body 1 is sent into the uppermost annular pipe 3 through the liquid delivery pipe 53. The treatment liquid on the uppermost liquid collecting plate 54 is sent into the lowermost annular pipe 3 through the liquid delivery pipe 53. The treatment liquid on the lowermost liquid collecting plate 54 is sent into the second annular pipe 3 from the top through the liquid delivery pipe 53. The treatment liquid on the second liquid collecting plate 54 from the top is sent into the second annular pipe 3 from the bottom through the liquid delivery pipe 53, and so on to complete the recycling of the treatment liquid.

[0037] Specifically, the treatment liquid that is in contact with more harmful substances at the lower side can be sent into the upper annular pipe 3 for re-spraying and contacting with the waste gas flowing on the upper side containing less harmful substances, while the treatment liquid that is in contact with fewer harmful substances at the upper side is sent into the lower annular pipe 3 for re-spraying and contacting with the waste gas containing more harmful substances. In this way, the speed of waste gas purification treatment can be increased on the premise of making full use of the treatment liquid, the time required for purification is shortened, and the cost required for waste gas purification treatment is effectively reduced.

[0038] 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, for those skilled in the art, they 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. The waste gas absorption tower for ammonium chloride production, comprising a tower body (1), and two groups of support legs (11) are symmetrically and fixedly connected to the bottom of the tower body (1), and it is characterized in that: A plurality of annular pipes (3) are fixedly connected to the inner side wall of the tower body (1) from top to bottom through fixing sleeves. A plurality of atomizing nozzles (31) are annularly communicated with the outer peripheral surface of the annular pipe (3) at equal angles. The device further includes a flow dividing component (4) arranged inside the tower body (1). The flow dividing component (4) includes a plurality of guide plates (41) fixedly connected to the inner side wall of the tower body (1) from top to bottom in sequence. A flow guiding hole is formed in the center of the top of the guide plate (41). The number of the plurality of guide plates (41) is equal to the number of the annular pipes (3) and they are staggered. The guide plate (41) is located below the corresponding annular pipe (3).

2. The waste gas absorption tower for ammonium chloride production according to claim 1, characterized in that: The diameters of the flow guiding holes on the plurality of guide plates (41) decrease from top to bottom in sequence.

3. The waste gas absorption tower for ammonium chloride production according to claim 2, characterized in that: The guide plate (41) is in the shape of a frustum-shaped hollow pipe, and both the inner side wall and the outer side wall of the guide plate (41) are frustum-shaped.

4. The waste gas absorption tower for ammonium chloride production according to claim 3, characterized in that: The flow dividing component (4) further includes a plurality of flow dividing members (42) fixedly connected to the inner side wall of the tower body (1) from top to bottom through connecting rods. The number of the flow dividing members (42) is equal to the number of the guide plates (41) and they are staggered. The flow dividing member (42) is located directly above the corresponding guide plate (41). The flow dividing member (42) includes a flow dividing block (421). A plurality of flow dividing plates (422) are fixedly connected to the outer peripheral surface of the flow dividing block (421) at equal angles in a ring shape. The flow dividing plates (422) on two adjacent upper and lower flow dividing blocks (421) are staggered. The flow dividing block (421) is in an inverted conical shape.

5. The waste gas absorption tower for ammonium chloride production according to claim 4, characterized in that: The device further includes a liquid medicine circulating component (5). The liquid medicine circulating component (5) includes multiple groups of straight pipes (51). The bottom ends of the multiple groups of straight pipes (51) extend to the bottom of the tower body (1). Liquid suction pumps (52) are installed on the multiple groups of straight pipes (51). Liquid delivery pipes (53) are communicated with the multiple groups of straight pipes (51). The multiple groups of liquid delivery pipes (53) are respectively communicated with the outer peripheral surfaces of the plurality of annular pipes (3).

6. The waste gas absorption tower for ammonium chloride production according to claim 5, characterized in that: The liquid medicine circulating component (5) further includes an annular liquid collecting plate (54) fixedly sleeved on the lower side of the outer peripheral surface of the guide plate (41). The bottoms of the plurality of liquid collecting plates (54) are communicated with a liquid collecting box (55) through through holes. The top ends of the multiple groups of straight pipes (51) are respectively connected to the bottoms of the multiple liquid collecting boxes (55). The bottom ends of the multiple groups of straight pipes (51) are respectively communicated with the outer peripheral surfaces of the plurality of annular pipes (3) through the liquid delivery pipes (53). The treatment liquid at the bottom of the tower body (1) is sent into the uppermost annular pipe (3) through the liquid delivery pipe (53). The treatment liquid on the uppermost liquid collecting plate (54) is sent into the lowermost annular pipe (3) through the liquid delivery pipe (53). The treatment liquid on the lowermost liquid collecting plate (54) is sent into the second annular pipe (3) from the top through the liquid delivery pipe (53). The treatment liquid on the second liquid collecting plate (54) from the top is sent into the second annular pipe (3) from the bottom through the liquid delivery pipe (53), and so on to complete the recycling of the treatment liquid.

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