Ammonium sulfate tail gas treatment and recovery device

Abstract

The utility model relates to the technical field of industrial flue gas treatment, in particular to an ammonium sulfate tail gas treatment and recovery device. A multi-point air inlet device is arranged at the bottom of the washing tower, an exhaust pipe is connected to the top of the washing tower, a rotary spraying structure is arranged in the washing tower, a demister is arranged above the rotary spraying structure, an airflow guide groove is formed in the inner side of the washing tower, a filter box is arranged on the side of the washing tower, and a water pump is connected to the side of the filter box. The water outlet end of the water pump is connected to the rotary spraying structure through a pipeline, and a liquid changing structure is arranged on the pipeline; according to the device, the spiral airflow guide groove is designed, so that the airflow can automatically rotate and generate vortex when rising, the contact with liquid is increased, and the treatment effect is ensured; according to the device, a circulating liquid path is designed, liquid is pumped out and filtered and then atomized and sprayed from the upper portion, and the water spraying pipe is automatically sprayed during spraying, so that the liquid spraying effect is improved, and the treatment efficiency is improved; the filter box capable of being quickly disassembled and assembled is designed, and the filter element is convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial flue gas treatment technical field, concretely relates to a kind of ammonium sulfate tail gas treatment recovery device. BACKGROUND

[0002] Ammonium sulfate is widely used in fertilizer, chemical industry and pharmaceutical fields as an important chemical product. In the production process of ammonium sulfate, especially in the crystallization and drying stage of ammonium sulfate, a large amount of tail gas is often generated. These tail gases usually contain ammonia, sulfides and other harmful substances, which will cause serious pollution to the environment if not treated before discharge.

[0003] Wet purification technology is a common and effective tail gas treatment method in chemical industry, and its core principle is to achieve purification effect by fully contacting liquid absorbent with harmful components in tail gas. However, the traditional wet purification device often has limited contact area and low reaction efficiency, which limits the treatment effect. UTILITY MODEL CONTENT

[0004] The utility model aims at the defects and deficiencies of prior art, and provides a kind of ammonium sulfate tail gas treatment recovery device with reasonable design, which can solve the above-mentioned defects.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: it contains washing tower, and the bottom of washing tower is provided with multi-point gas inlet device, and the top of washing tower is connected with exhaust pipe, and rotating spray structure is arranged in washing tower, and demister is arranged above rotating spray structure, and airflow guide groove is opened in the inner side of washing tower, and filter box is arranged at the side of washing tower, and water pump is connected with filter box, and the outlet of water pump is connected with rotating spray structure through pipeline, and liquid replacement structure is arranged on the pipeline.

[0006] Preferably, the rotating spray structure comprises a fixed plate horizontally arranged in the washing tower, a rotating joint vertically arranged on the fixed plate, a water spray pipe horizontally arranged and connected below the rotating joint, and a plurality of inclined atomizing nozzles connected to the lower side of both ends of the water spray pipe.

[0007] Preferably, the filter box comprises a box body, one end of the box body is connected to the bottom of the washing tower through a water suction pipe, the other end of the box body is connected to the water pump, a box cover is arranged above the box body, a sealing gland is connected to the middle of the bottom end of the box cover, a filter element is arranged below the sealing gland, a sliding block is arranged on the top of both sides of the filter element, and two groups of opposite limiting sliding grooves are connected to the bottom of the sealing gland, and the sliding blocks are slidingly arranged in the limiting sliding grooves.

[0008] Preferably, the multi-point gas inlet device comprises a total gas inlet pipe for gas inlet, and the total gas inlet pipe is connected with annular gas inlet pipe after penetrating through the side wall of the washing tower, and a plurality of inclined gas inlet nozzles are arranged on the outer side of the annular gas inlet pipe.

[0009] Preferably, the airflow guide groove is a spiral groove.

[0010] Preferably, the liquid replacement structure comprises a water inlet pipe connected to the water outlet end of the water pump, an inlet pipe connected to the water inlet pipe, the inlet pipe being connected to a rotating joint, the water inlet pipe and the inlet pipe being connected through a tee joint, another port of the tee joint being connected to a liquid replacement pipe for water inlet and outlet, and the tee joint being provided with electromagnetic valve one, electromagnetic valve two and electromagnetic valve three at the connection positions of the tee joint, the water inlet pipe and the inlet pipe, respectively.

[0011] Preferably, a plurality of sealing rings are arranged below the box cover.

[0012] Preferably, a handle is arranged on the box cover.

[0013] After the above structure is adopted, the beneficial effects of the present application are as follows:

[0014] 1. The spiral airflow guide groove is designed to make the airflow rotate automatically when rising, generate vortex, and thus increase the contact with the liquid to ensure the treatment effect.

[0015] 2. The liquid circuit is designed to be circular, the liquid is extracted and filtered, and then atomized and sprayed from above, and the automatic spraying pipe is used during spraying to increase the liquid spraying effect and improve the treatment efficiency.

[0016] 3. The filter box is designed to be quickly disassembled, facilitating the replacement of the filter core. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 is Figure 1 is an enlarged view of part A in Fig.

[0019] Figure 3 is a sectional view of the present application;

[0020] Figure 4 is a sectional view of the filter box in the present application;

[0021] Figure 5 is a schematic diagram of the connection structure of the box cover in the present application.

[0022] LEGEND:

[0023] 1, washing tower; 2, total inlet pipe; 3, exhaust pipe; 4, filter box; 401, box body; 402, box cover; 403, handle; 404, sealing ring; 405, sealing gland; 406, filter element; 407, limiting sliding groove; 408, sliding block; 5, water pump; 6, upper water pipe; 7, water inlet pipe; 8, demister; 9, airflow guide groove; 10, fixed plate; 11, rotary joint; 12, water spraying pipe; 13, atomizing nozzle; 14, annular inlet pipe; 15, inlet nozzle; 16, tee joint; 17, electromagnetic valve one; 18, electromagnetic valve two; 19, electromagnetic valve three; 20, water suction pipe; 21, liquid exchange pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Referring to Figures 1-4 As shown in the figure, it comprises a washing tower 1, the bottom of the washing tower 1 is provided with a multi-point inlet device, the top of the washing tower 1 is connected with an exhaust pipe 3, the washing tower 1 is provided with a rotary spraying structure, the upper side of the rotary spraying structure is provided with a demister 8, the inside of the washing tower 1 is provided with a spiral airflow guide groove 9, the side of the washing tower 1 is provided with a filter box 4, the side of the filter box 4 is connected with a water pump 5, the water outlet end of the water pump 5 is connected to the rotary spraying structure through a pipeline, and the pipeline is provided with a liquid exchange structure.

[0026] Referring to Figures 1-3 As shown in the figure, the rotary spraying structure comprises a fixed plate 10 horizontally arranged in the washing tower 1, a rotary joint 11 vertically arranged on the fixed plate 10, a water spraying pipe 12 horizontally arranged and connected below the rotary joint 11, and a plurality of inclined atomizing nozzles 13 connected to the lower side of the two ends of the water spraying pipe 12.

[0027] As an optimization scheme of the utility model, the rotary joint 11 is arranged, liquid is input into the water spraying pipe 12, and then sprayed out from the atomizing nozzles 13. Since the atomizing nozzles 13 are inclined, the liquid can drive the water spraying pipe 12 to rotate while being sprayed, thereby enhancing the effect of atomizing spraying.

[0028] Referring to Figures 1-5As shown in the figure, the filter box 4 comprises a box body 401, one end of the box body 401 is connected to the bottom of the washing tower 1 through a water suction pipe 20, the other end of the box body 401 is connected to the water pump 5, a box cover 402 is bolted on the top of the box body 401, a handle 403 is arranged on the box cover 402, a plurality of sealing rings 404 are arranged below the box cover 402, a sealing gland 405 is connected to the middle of the bottom end of the box cover 402, a filter core 406 is arranged below the sealing gland 405, sliding blocks 408 are arranged on the top of the two sides of the filter core 406, and two groups of opposite limiting sliding grooves 407 are connected to the bottom of the sealing gland 405, and the sliding blocks 408 are slidably arranged in the limiting sliding grooves 407.

[0029] As an optimization scheme of the utility model, the detachable filter core 406 is arranged, the handle 403, the box cover 402, the sealing gland 405 and the filter core 406 can be lifted after the bolts are removed, the filter core 406 can be pulled out to the side for replacement, the filter core 406 is inserted back and the bolts are tightened after the replacement is completed, and therefore the replacement is simple and convenient.

[0030] Referring to Figures 1-3 As shown in the figure, the multi-point air inlet device comprises a total air inlet pipe 2 for air inlet, the total air inlet pipe 2 is connected with a ring-shaped air inlet pipe 14 after penetrating through the side wall of the washing tower 1, and a plurality of inclined air inlet nozzles 15 are arranged on the outer side of the ring-shaped air inlet pipe 14.

[0031] As an optimization scheme of the utility model, the ring-shaped air inlet pipe 14 is arranged, the input tail gas is divided and sprayed from the plurality of air inlet nozzles 15, and therefore the uniformity of air inlet is ensured, and the gas entering the washing tower 1 is prevented from being concentrated in a local part.

[0032] Referring to Figures 1-3 As shown in the figure, the liquid replacement structure comprises a water inlet pipe 6 connected to the water outlet end of the water pump 5, a water inlet pipe 7 is connected to a rotary joint 11 above the water inlet pipe 6, the water inlet pipe 6 and the water inlet pipe 7 are connected through a three-way joint 16, another port of the three-way joint 16 is connected to a liquid replacement pipe 21 for water inlet and outlet, and the connection positions of the three-way joint 16, the water inlet pipe 6, the water inlet pipe 7 and the liquid replacement pipe 21 are respectively provided with electromagnetic valves one 17, electromagnetic valves two 18 and electromagnetic valves three 19.

[0033] As an optimization scheme of the utility model, the three-way joint 16 is arranged, and the electromagnetic valves are arranged at the three joints, and the liquid inlet and outlet can be controlled by controlling the opening and closing of the electromagnetic valves.

[0034] The use process of the utility model is as follows:

[0035] First, close electromagnetic valve 17, open electromagnetic valve 18 and electromagnetic valve 19, connect the liquid exchange pipe 21 to the external liquid supply device, the liquid can flow from the liquid exchange pipe 21 into the water inlet pipe 7, and then sprayed from the atomizing nozzle 13, and gathered in the bottom of the washing tower 1, when the liquid amount is enough, close electromagnetic valve 18, open electromagnetic valve 17, start the equipment work;

[0036] The exhaust gas is evenly sprayed from the plurality of air inlet nozzles 15 after passing through the total air inlet pipe 2 and the annular air inlet pipe 14, and reacts with the liquid in the bottom of the washing tower 1 and rises quickly, after leaving the liquid, the exhaust gas automatically generates rotation and rises due to the existence of the air flow guide groove 9, and the liquid is pumped out by the water pump 5, the particles in the liquid are filtered, and then the liquid enters the water spraying pipe 12 after passing through the upper water pipe 6 and the water inlet pipe 7, and is sprayed from the atomizing nozzle 13, at the same time, the water spraying pipe 12 rotates, so that the atomized liquid splashes, thereby uniformly reacting with the exhaust gas, and the particles in the exhaust gas are settled, the liquid falls down and is gathered in the bottom of the washing tower 1 again, and is sprayed after being purified by the water pump 5, and the reacted gas removes the water vapor mixed therein from the demister 8, and then is discharged from the exhaust pipe 3;

[0037] After a period of use, when the liquid needs to be replaced, stop the equipment operation, close the electromagnetic valve 19, open the electromagnetic valve 17 and the electromagnetic valve 18, connect the liquid exchange pipe 21 to the external liquid discharge device, and start the water pump 5 to discharge the liquid in the washing tower 1, repeat the above-mentioned liquid inlet operation, and then start the equipment operation;

[0038] During use, the user replaces the filter element 406 according to the particle content in the treated exhaust gas.

[0039] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundary of the appended claims, or the equivalent forms of such scope and boundary.

Claims

1. An ammonium sulfate tail gas treatment and recovery device, comprising a washing tower (1), characterized in that: The bottom of the washing tower (1) is provided with a multi-point air intake device, the top of the washing tower (1) is connected to an exhaust pipe (3), a rotary spray structure is provided in the washing tower (1), a demister (8) is provided above the rotary spray structure, an air flow guide groove (9) is provided on the inside of the washing tower (1), a filter box (4) is provided on the side of the washing tower (1), a water pump (5) is connected to the side of the filter box (4), the water outlet end of the water pump (5) is connected to the rotary spray structure through a pipeline, and a liquid exchange structure is provided on the pipeline.

2. The ammonium sulfate tail gas treatment and recovery device according to claim 1, wherein: The rotary spray structure comprises a fixed plate (10) horizontally arranged in a washing tower (1), a rotary joint (11) vertically arranged on the fixed plate (10), a horizontally arranged water spray pipe (12) connected below the rotary joint (11), and a plurality of tilted atomizing nozzles (13) connected to the lower sides of both ends of the water spray pipe (12).

3. The ammonium sulfate tail gas treatment and recovery device according to claim 2, characterized in that: The filter box (4) includes a box body (401), one end of the box body (401) is connected to the bottom of the washing tower (1) through a water pump (20), and the other end of the box body (401) is connected to the water pump (5). A box cover (402) is provided above the box body (401), a sealing gland (405) is connected to the middle of the bottom end of the box cover (402), a filter element (406) is provided below the sealing gland (405), and sliders (408) are respectively provided at the tops of both sides of the filter element (406). The bottom of the sealing gland (405) is connected to two sets of opposite limiting slides (407), and the sliders (408) are slidably arranged in the limiting slides (407).

4. The ammonium sulfate tail gas treatment and recovery device according to claim 3, characterized in that: The multi-point air intake device comprises a main air intake pipe (2) for air intake, the main air intake pipe (2) penetrates the side wall of the scrubbing tower (1) and is connected to an annular air intake pipe (14), and a plurality of inclined air intake nozzles (15) are provided on the outer side of the annular air intake pipe (14).

5. The ammonium sulfate tail gas treatment and recovery device according to claim 4, characterized in that: The airflow guide groove (9) is a spiral groove.

6. The ammonium sulfate tail gas treatment and recovery device according to claim 5, characterized in that: The liquid exchange structure comprises an upper water pipe (6) connected to the water outlet end of the water pump (5), a water inlet pipe (7) is connected above the upper water pipe (6), the water inlet pipe (7) is connected to the rotary joint (11), the upper water pipe (6) and the water inlet pipe (7) are connected via a three-way joint (16), the other end of the three-way joint (16) is connected to a liquid exchange pipe (21) for water inlet and outlet, and electromagnetic valve 1 (17), electromagnetic valve 3 (19) and electromagnetic valve 2 (18) are respectively provided at the connection points between the three-way joint (16) and the upper water pipe (6), the water inlet pipe (7) and the liquid exchange pipe (21).

7. The ammonium sulfate tail gas treatment and recovery device according to claim 6, characterized in that: Several sealing rings (404) are provided below the box cover (402).

8. The ammonium sulfate tail gas treatment and recovery device according to claim 7, characterized in that: A handle (403) is provided on the box cover (402).

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