Waste gas treatment device for compound fertilizer production and processing

Abstract

The utility model discloses a waste gas treatment device for compound fertilizer production and processing, which comprises a conveying gas pipe and a filter assembly, and further comprises a cooling water tank and an absorption device, the conveying air pipe, the filtering assembly and the absorbing device are sequentially communicated through pipelines, and the conveying air pipe is arranged in the cooling water tank; the absorption device comprises a second air inlet and air hole plates, absorption liquid is arranged in the absorption device, the second air inlet used for being connected with a pipeline is formed in the bottom of the outer side of the absorption device, and multiple layers of air hole plates higher than the second air inlet are arranged in the absorption device; a spraying device is arranged on the top surface in the absorption device, and an exhaust pipe is arranged at the top of the absorption device. According to the waste gas treatment device, the contact area of the conveying gas pipe and cooling water is increased by additionally arranging the branch gas pipes, the cooling efficiency is improved, tiny dust particles in gas are filtered through the filtering assembly, harmful gas in the gas is absorbed through the absorption device, various harmful components in waste gas are treated one by one, and the waste gas treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer production, and specifically relates to an exhaust gas treatment device for compound fertilizer production and processing. Background Technique

[0002] Compound fertilizer is a chemical fertilizer produced from multiple nutrient elements. In its production, raw material batching, raw material mixing, raw material granulation, granule drying, granule cooling, granule grading, finished product coating, and finally finished product packaging are required. Its production has low investment, quick results, and good economic benefits. The process layout of the complete set of equipment is compact, scientific and reasonable, and the technology is advanced. Currently, during the production of compound fertilizer, a large amount of waste gas and waste water are generated; at the same time, compound fertilizer refers to a fertilizer containing two or more of the main nutrient elements such as N, P, and K. Therefore, during the production process, the waste gas will also contain the above-mentioned organic components. Among them, ammonia is a pungent and toxic gas. In an ammonia environment, smelling ammonia over the years will irritate the respiratory tract and cause impacts on the body. Therefore, during the production process of compound fertilizer, it is necessary to treat the waste gas through an exhaust gas treatment device before discharging it.

[0003] In the prior art, the utility model patent with the patent number CN202322149548.X discloses an exhaust gas treatment device for compound fertilizer production and processing, which relates to the technical field of exhaust gas treatment devices. To solve the problem that most of the existing exhaust gas treatment devices for compound fertilizer production and processing adopt a filter element structure, and the filter element structure is mostly fixedly installed inside the treatment device, which is not easy to replace and not convenient to use. The lifting device of the exhaust gas treatment device, and the lifting device is fixedly connected to the exhaust gas treatment device through fastening screws. A frame is arranged inside the exhaust gas treatment device. A top sealing plate is installed above the frame, and the top sealing plate is fixedly connected to the frame through fastening screws. A filter element is installed inside the frame, and the filter element is detachably fixedly connected to the frame. A screw rod is installed inside the lifting device. A screw rod seat is installed on the outer side of the screw rod, and the screw rod seat is in threaded connection with the screw rod. A connecting leg is installed on one side of the screw rod seat.

[0004] The above patent describes an exhaust gas treatment device for compound fertilizer production and processing. The lifting device and the frame of this device can quickly install the filter element through the frame, and at the same time, the frame can be controlled to quickly rise and fall through the lifting device, which is convenient for installing and disassembling the filter element; however, during the production process of chemical fertilizers, it is not only necessary to treat the waste gas through the filter element. The waste gas generated during the production process of chemical fertilizers not only contains dust particles, but also contains organic gases in the gas, and even the temperature of the waste gas itself is relatively high. During the waste gas treatment process of the above device, there is a lack of corresponding treatment devices for different waste gas components, resulting in poor waste gas treatment effects. At the same time, the high temperature of the waste gas itself will reduce the service life of the filter element; it needs to be further improved. Summary of the Invention

[0005] The purpose of the present utility model is to provide an exhaust gas treatment device for compound fertilizer production and processing, aiming to improve the problem that the existing exhaust gas treatment device has a single treatment method, lacks a suitable treatment method for the high temperature of the exhaust gas itself, as well as the dust particles and organic gases contained in the exhaust gas, resulting in poor treatment effect of the exhaust gas treatment device.

[0006] The present utility model is realized as follows: an exhaust gas treatment device for compound fertilizer production and processing includes a conveying air pipe and a filtering component, and also includes a cooling water tank and an absorption device; the conveying air pipe, the filtering component and the absorption device are sequentially connected through pipelines, and the conveying air pipe is arranged inside the cooling water tank; the absorption device includes a second air inlet and a pore plate, an absorption liquid is arranged inside the absorption device, a second air inlet for connecting a pipeline is arranged at the outer bottom of the absorption device, and multiple pore plates higher than the second air inlet are arranged inside the absorption device; a spraying device is arranged on the inner top surface of the absorption device, and an exhaust pipe is arranged at the top of the absorption device.

[0007] Preferably, the cooling water tank includes an overflow port, a water inlet and support legs; an overflow port and a water inlet are arranged on the side surface of the cooling water tank, the overflow port is higher than the water inlet, and support legs are fixedly arranged at the bottom of the cooling water tank.

[0008] Preferably, the conveying air pipe includes a main air pipe and multiple branch air pipes, the main air pipe is arranged inside the cooling water tank, the air inlet penetrates through the top box body of the cooling water tank and extends to the outside and is connected to the gas source through a pipeline, and the air outlet penetrates through the lower side of the box body of the cooling water tank and extends to the outside and is connected to the filtering component through a pipeline; multiple branch air pipes are sequentially connected along the circumference of the part of the main air pipe located in the cooling water tank.

[0009] Preferably, the conveying air pipe further includes a liquefied water collection box, and a drain port is arranged on the liquefied water collection box; the lowest end of the main air pipe is provided with a liquefied water collection box through a pipeline, and the liquefied water collection box is arranged below the cooling water tank.

[0010] Preferably, the filtering component includes a filtering box body, a first air inlet and a first air outlet are respectively arranged at both ends of the filtering box body, the first air inlet is connected to the conveying air pipe through a pipeline, and the first air outlet is connected to the absorption device through a pipeline; multiple filtering plates are sequentially and detachably installed inside the filtering box body.

[0011] Preferably, a plurality of installation openings are formed at the upper end of the filtering box body, and the filtering plates are inserted into the installation openings; installation bolts are arranged on the filtering plates, and the filtering plates are installed in the installation openings through the installation bolts.

[0012] Preferably, a switching valve is further included, and switching valves are provided on the pipelines connected to the first air inlet and the first air outlet.

[0013] Preferably, the absorption device further includes a water port, the water port is provided at the lower end of the side surface of the absorption device, and a water valve is provided on the water port.

[0014] Preferably, the spraying device includes a water pump, the water pump is arranged on the upper end surface of the absorption device, a water suction pipe is arranged at the water inlet of the water pump, the lower end of the water suction pipe is arranged inside the absorption device, the water outlet of the water pump is connected with an atomizing water spray head, and the atomizing water spray head is arranged at the top end inside the absorption device.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. By providing a cooling water tank, a conveying air pipe, a filtering component and an absorption device, the present utility model increases the contact area between the conveying air pipe and the cooling water by adding a bronchus, improves the cooling efficiency, then filters the dust particles in the gas through the filtering component, and absorbs the harmful gases in the gas through the absorption device, so as to process various harmful components in the waste gas one by one and improve the waste gas treatment effect.

[0017] 2. By providing a filter plate, the filter plate is detachably installed on the filter box body, which is convenient for disassembling the filter plate and the operation is simple and convenient.

[0018] 3. By providing a pore plate and a spraying device, the gas entering the absorption device can be directly absorbed by being injected into the liquid and combined with spray absorption, so as to improve the absorption efficiency of harmful substances in the waste gas. Description of the Drawings

[0019] Figure 1 is the front structural schematic diagram of the present utility model;

[0020] Figure 2 is the sectional structural schematic diagram of the cooling water tank of the present utility model;

[0021] Figure 3 is the structural schematic diagram of the conveying air pipe of the present utility model;

[0022] Figure 4 is the structural schematic diagram of the filtering component of the present utility model;

[0023] Figure 5 is the sectional structural schematic diagram of the absorption device of the present utility model.

[0024] In the figure: 1. Cooling water tank; 101. Overflow port; 102. Water inlet; 103. Support leg; 2. Delivery air pipe; 201. Main air pipe; 202. Branch air pipe; 203. Liquefied water collection tank; 204. Drain port; 3. Filter assembly; 301. Filter housing; 302. First air inlet; 303. First air outlet; 304. Installation port; 305. Filter plate; 306. Installation bolt; 4. Switch valve; 5. Absorption device; 501. Second air inlet; 502. Water port; 503. Water valve; 504. Air hole plate; 6. Spraying device; 601. Water pump; 602. Water suction pipe; 603. Atomizing water spray head; 7. Exhaust pipe. Detailed implementation mode

[0025] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and other terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The following is a further description in conjunction with the drawings and specific embodiments:

[0027] Embodiment 1

[0028] As Figures 1 - 4As shown in the figure, an exhaust gas treatment device for compound fertilizer production and processing includes a delivery gas pipe 2 and a filtration component 3, and also includes a cooling water tank 1 and an absorption device 5; the delivery gas pipe 2, the filtration component 3 and the absorption device 5 are sequentially connected through pipelines. The delivery gas pipe 2 is arranged inside the cooling water tank 1. By arranging the delivery gas pipe 2 inside the cooling water tank 1, the high-temperature gas inside the delivery gas pipe 2 can be cooled by the circulating water in the cooling water tank 1. The cooling water tank 1 includes an overflow port 101, a water inlet 102 and support legs 103; the overflow port 101 and the water inlet 102 are arranged on the side of the cooling water tank 1, and the overflow port 101 is higher than the water inlet 102. Cooling liquid can be poured into the cooling water tank 1 through the water inlet 102, and then the excess cooling liquid can be discharged through the overflow port 101. Support legs 103 are fixedly arranged at the bottom of the cooling water tank 1; the delivery gas pipe 2 includes a main gas pipe 201 and a plurality of branch gas pipes 202. The main gas pipe 201 is arranged inside the cooling water tank 1. The air inlet penetrates through the top box body of the cooling water tank 1 and extends to the outside and is connected to the gas source through a pipeline, and the air outlet penetrates through the lower side of the box body of the cooling water tank 1 and extends to the outside and is connected to the filtration component 3 through a pipeline. A plurality of branch gas pipes 202 are sequentially connected along the circumference of the part of the main gas pipe 201 located in the cooling water tank 1. By arranging a plurality of branch gas pipes 202, the contact area between the delivery gas pipe 2 and the cooling liquid can be enlarged; the delivery gas pipe 2 also includes a liquefied water collection tank 203, and a drain port 204 is arranged on the liquefied water collection tank 203. By arranging the liquefied water collection tank 203, the liquefied gas in the delivery gas pipe 2 can be concentrated in the liquefied water collection tank 203 to prevent the liquefied water from entering the filtration component 3 and causing damage to the filtration component 3; the filtration component 3 includes a filtration box body 301. A first air inlet 302 and a first air outlet 303 are respectively arranged at both ends of the filtration box body 301. The first air inlet 302 is connected to the delivery gas pipe 2 through a pipeline, and the first air outlet 303 is connected to the absorption device 5 through a pipeline. In addition, a switch valve 4 is also included. Switch valves 4 are arranged on the pipelines connected to the first air inlet 302 and the first air outlet 303. By arranging two switch valves 4, the gas flow can be conveniently blocked when equipment components need to be replaced; a plurality of filter plates 305 are detachably installed in sequence inside the filtration box body 301. A plurality of installation openings 304 are opened at the upper end of the filtration box body 301, and the filter plates 305 are inserted into the installation openings 304; installation bolts 306 are arranged on the filter plates 305, and the filter plates 305 are installed in the installation openings 304 through the installation bolts 306. By arranging the filter plates 305, the filter plates 305 in the filtration component 3 can be conveniently disassembled and replaced, which is simple and convenient and does not waste time.

[0029] As Figure 1 and Figure 5As shown, the lowest end of the main air pipe 201 is provided with a liquefied water collection tank 203 through a pipeline. The liquefied water collection tank 203 is arranged below the cooling water tank 1. By arranging the liquefied water collection tank 203 below the cooling water tank 1, it is convenient for the liquefied water in the conveying air pipe 2 to flow into the liquefied water collection tank 203 from top to bottom, and at the same time, it is convenient for the staff to take out the collected water; The absorption device 5 includes a second air inlet 501 and a pore plate 504. An absorption liquid is arranged inside the absorption device 5. The second air inlet 501 for connecting the pipeline is arranged at the outer bottom of the absorption device 5. A plurality of pore plates 504 higher than the second air inlet 501 are arranged inside the absorption device 5. By arranging the pore plate 504, the bubbles entering the inside of the absorption device 5 can be broken and dispersed into small bubbles, increasing the contact area between the bubbles and the absorption liquid. The absorption device 5 also includes a water outlet 502. The water outlet 502 is arranged at the lower end of the side surface of the absorption device 5, and a water valve 503 is arranged on the water outlet 502; A spraying device 6 is arranged on the inner top surface of the absorption device 5. The spraying device 6 includes a water pump 601. The water pump 601 is arranged on the upper end surface of the absorption device 5. The water inlet of the water pump 601 is provided with a water absorption pipeline 602. The lower end of the water absorption pipeline 602 is arranged inside the absorption device 5. The water outlet of the water pump 601 is connected with a atomizing water spray head 603. The atomizing water spray head 603 is arranged at the inner top end of the absorption device 5. By arranging the atomizing water spray head 603, the harmful substances remaining in the bubbles overflowing from the absorption liquid can be absorbed again, improving the efficiency of removing harmful substances. An exhaust pipe 7 is arranged at the top of the absorption device 5.

[0030] Embodiment 2

[0031] As Figures 1 - 4As shown in the figure, an exhaust gas treatment device for compound fertilizer production and processing includes a delivery air pipe 2 and a filtration component 3, and also includes a cooling water tank 1 and an absorption device 5; the delivery air pipe 2, the filtration component 3 and the absorption device 5 are sequentially connected through pipelines. The delivery air pipe 2 is arranged inside the cooling water tank 1. The cooling water tank 1 includes an overflow port 101, a water inlet 102 and support legs 103; the overflow port 101 and the water inlet 102 are arranged on the side of the cooling water tank 1, the overflow port 101 is higher than the water inlet 102, and the support legs 103 are fixedly arranged at the bottom of the cooling water tank 1; the delivery air pipe 2 includes a main air pipe 201 and a plurality of branch air pipes 202. The main air pipe 201 is arranged inside the cooling water tank 1. The air inlet penetrates through the top box body of the cooling water tank 1 and extends to the outside and is connected to the gas source through a pipeline. The air outlet penetrates through the lower side of the box body of the cooling water tank 1 and extends to the outside and is connected to the filtration component 3 through a pipeline. The filtration component 3 includes a filtration box body 301. The two ends of the filtration box body 301 are respectively provided with a first air inlet 302 and a first air outlet 303. The first air inlet 302 is connected to the delivery air pipe 2 through a pipeline, and the first air outlet 303 is connected to the absorption device 5 through a pipeline. In addition, a switch valve 4 is further included. Switch valves 4 are arranged on the pipelines connected to the first air inlet 302 and the first air outlet 303; a plurality of filter plates 305 are sequentially and detachably installed inside the filtration box body 301. A plurality of installation openings 304 are opened at the upper end of the filtration box body 301, and the filter plates 305 are inserted into the installation openings 304; installation bolts 306 are arranged on the filter plates 305, and the filter plates 305 are installed in the installation openings 304 through the installation bolts 306.

[0032] As Figure 1 and Figure 5 shown in the figure, a plurality of branch air pipes 202 are sequentially connected along the circumference of the part of the main air pipe 201 located in the cooling water tank 1; the delivery air pipe 2 further includes a liquefied water collection tank 203, and a drain port 204 is arranged on the liquefied water collection tank 203; the lowest end of the main air pipe 201 is provided with the liquefied water collection tank 203 through a pipeline, and the liquefied water collection tank 203 is arranged below the cooling water tank 1; the absorption device 5 includes a second air inlet 501 and a pore plate 504. An absorption liquid is arranged inside the absorption device 5. The second air inlet 501 for connecting a pipeline is arranged at the outer bottom of the absorption device 5. A plurality of pore plates 504 higher than the second air inlet 501 are arranged inside the absorption device 5. The absorption device 5 further includes a water port 502. The water port 502 is arranged at the lower end of the side of the absorption device 5, and a water valve 503 is arranged on the water port 502; a spraying device 6 is arranged on the inner top surface of the absorption device 5. The spraying device 6 includes a water pump 601. The water pump 601 is arranged on the upper end surface of the absorption device 5. The water inlet of the water pump 601 is provided with a water absorption pipeline 602. The lower end of the water absorption pipeline 602 is arranged inside the absorption device 5. The water outlet of the water pump 601 is connected to an atomizing water spray head 603. The atomizing water spray head 603 is arranged at the inner top end of the absorption device 5. An exhaust pipe 7 is arranged at the top of the absorption device 5.

[0033] Working principle of the utility model: In the production of compound fertilizer, first, the water inlet 102 of the cooling water tank 1 is connected to a water pipe to fill its interior with water, and the excess water is discharged through the overflow port. Then, the generated waste gas is conveyed to the main pipe 201 of the conveying gas pipe 2, and then the waste gas is dispersed from the main pipe 201 into the branch pipes 202, where it is fully cooled inside the cooling water tank 1. The coolant generated during the cooling process will flow into the liquefied water collection tank 203. The cooled gas then enters the filtering assembly 3 through a pipeline, and harmful substances in the gas are filtered one by one through multiple filter plates 305. Then, the filtered gas enters the absorption device 5 through a pipeline. The bubbles are broken into small bubbles by the pore plate 504 in the water and then come into full contact with the absorption liquid to absorb the harmful substances in the gas. When the gas escapes to the upper layer of the absorption device 5, the water pump 601 sucks out the absorption liquid and then sprays it through the atomizing sprinkler head 603 to spray and absorb the remaining harmful substances in the gas once again. The purified gas will be discharged through the exhaust pipe 7.

[0034] In summary, the utility model is provided with a cooling water tank 1, a conveying gas pipe 2, a filtering assembly 3, and an absorption device 5. By increasing the branch pipes 202, the contact area between the conveying gas pipe 2 and the cooling water is increased, improving the cooling efficiency. Then, the dust particles in the gas are filtered by the filtering assembly 3, and the harmful gases in the gas are absorbed by the absorption device 5, treating various harmful components in the waste gas one by one to improve the waste gas treatment effect; by providing the filter plate 305, the filter plate 305 is detachably installed on the filter box body 301, facilitating the disassembly of the filter plate 305, with simple and convenient operation; by providing the pore plate 504 and the spraying device 6, the gas entering the absorption device 5 can be directly absorbed by being injected into the liquid and combined with spraying absorption, improving the absorption efficiency of harmful substances in the waste gas.

[0035] The above is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.

Claims

1. An exhaust gas treatment device for the production and processing of compound fertilizers, comprising a conveying air pipe (2) and a filtering assembly (3), characterized in that, It further includes a cooling water tank (1) and an absorption device (5); the delivery air pipe (2), the filtration assembly (3) and the absorption device (5) are sequentially connected through pipelines, and the delivery air pipe (2) is arranged inside the cooling water tank (1); the absorption device (5) includes a second air inlet (501) and a pore plate (504), an absorption liquid is arranged inside the absorption device (5), the second air inlet (501) for connecting a pipeline is arranged at the outer bottom of the absorption device (5), and multiple pore plates (504) higher than the second air inlet (501) are arranged inside the absorption device (5); a spraying device (6) is arranged on the inner top surface of the absorption device (5), and an exhaust pipe (7) is arranged at the top of the absorption device (5).

2. An exhaust gas treatment device for compound fertilizer production and processing according to claim 1, characterized in that, The cooling water tank (1) includes an overflow port (101), a water inlet (102) and support legs (103); the overflow port (101) and the water inlet (102) are arranged on the side surface of the cooling water tank (1), the overflow port (101) is higher than the water inlet (102), and support legs (103) are fixedly arranged at the bottom of the cooling water tank (1).

3. An exhaust gas treatment device for compound fertilizer production and processing according to claim 1, characterized in that, The delivery air pipe (2) includes a main air pipe (201) and a plurality of branch air pipes (202), the main air pipe (201) is arranged inside the cooling water tank (1), the air inlet penetrates through the top box body of the cooling water tank (1) and extends to the outside and is connected to a gas source through a pipeline, and the air outlet penetrates through the lower side of the box body of the cooling water tank (1) and extends to the outside and is connected to the filtration assembly (3) through a pipeline; a plurality of branch air pipes (202) are sequentially connected along the circumference of the part of the main air pipe (201) located in the cooling water tank (1).

4. An exhaust gas treatment device for compound fertilizer production and processing according to claim 3, characterized in that, The delivery air pipe (2) further includes a liquefied water collection tank (203), and a drain port (204) is arranged on the liquefied water collection tank (203); the lowest end of the main air pipe (201) is provided with the liquefied water collection tank (203) through a pipeline, and the liquefied water collection tank (203) is arranged below the cooling water tank (1).

5. An exhaust gas treatment device for compound fertilizer production and processing according to claim 1, characterized in that, The filtration assembly (3) includes a filtration box body (301), a first air inlet (302) and a first air outlet (303) are respectively arranged at both ends of the filtration box body (301), the first air inlet (302) is connected to the delivery air pipe (2) through a pipeline, and the first air outlet (303) is connected to the absorption device (5) through a pipeline; a plurality of filter plates (305) are sequentially and detachably installed inside the filtration box body (301).

6. The waste gas treatment device for compound fertilizer production and processing according to claim 5, characterized in that, A plurality of installation openings (304) are formed at the upper end of the filtration box body (301), and the filter plates (305) are inserted into the installation openings (304); installation bolts (306) are arranged on the filter plates (305), and the filter plates (305) are installed in the installation openings (304) through the installation bolts (306).

7. An exhaust gas treatment device for compound fertilizer production and processing according to claim 5, characterized in that, In addition, a switching valve (4) is further included, and switching valves (4) are arranged on the pipelines connected to the first air inlet (302) and the first air outlet (303).

8. An exhaust gas treatment device for compound fertilizer production and processing according to claim 1, characterized in that, The absorption device (5) further comprises a water inlet (502). The lower end of the side surface of the absorption device (5) is provided with the water inlet (502), and a water valve (503) is provided on the water inlet (502).

9. An exhaust gas treatment device for compound fertilizer production and processing according to claim 1, characterized in that, The spraying device (6) comprises a water pump (601), the water pump (601) being arranged on the upper end surface of the absorption device (5), the water inlet of the water pump (601) being provided with a water suction pipe (602), the lower end of the water suction pipe (602) being arranged inside the absorption device (5), the water outlet of the water pump (601) being connected to an atomizing water spray head (603), and the atomizing water spray head (603) being located at the top end inside the absorption device (5).

Images