A tail gas recovery device for a desulfurization regeneration tank

Abstract

This utility model belongs to the technical field of tail gas recovery devices, specifically relating to a tail gas recovery device for a desulfurization regeneration tank. It includes a tail gas recovery tower, with an air inlet installed on the outer wall near the bottom on one side. The other end of the air inlet is connected to one end of a connecting pipe via a flange. A cooling jacket is fitted onto the outer wall of the connecting pipe. In use, the connecting pipe is connected to the tail gas discharge port of the desulfurization regeneration tank, and a water pump is started to discharge cooling water from the cooling water tank to the inlet. The cooling water then enters the cooling jacket through the inlet. Once inside the cooling jacket, the cooling water lowers the temperature of the heat-conducting coils. The tail gas from the desulfurization regeneration tank then flows along the spiral track formed by the annular sleeve and the filling column after entering the connecting pipe. This increases the flow time of the tail gas in the connecting pipe, allowing it to absorb a significant amount of heat through the interaction of the cooling jacket's heat-conducting coils.

Description

Technical Field

[0001] This utility model belongs to the technical field of exhaust gas recovery devices, specifically relating to an exhaust gas recovery device for a desulfurization regeneration tank. Background Technology

[0002] The tail gas of the desulfurization regeneration tank refers to the sulfur-containing gas mixture released during the desulfurization process after the desulfurizing agent (such as activated carbon, zinc oxide, ammonia water, sodium carbonate, etc.) absorbs sulfides and then undergoes a regeneration process (such as heating, purging, chemical reaction, etc.). The tail gas of the desulfurization regeneration tank is a highly polluting and high-risk byproduct that must be treated in the industrial desulfurization process. Its composition is complex, highly toxic, and highly corrosive. Therefore, the tail gas of the desulfurization regeneration tank must be recovered and treated using a special tail gas recovery device.

[0003] In industrial desulfurization processes, the tail gas recovery tower is the core equipment for purifying the tail gas from the desulfurization regeneration tank. It removes harmful components from the tail gas through absorption, adsorption, and catalysis, playing a crucial role in ensuring emission standards are met. However, in actual operation, the tail gas emitted from the desulfurization regeneration tank generally has a high temperature, typically reaching 100-300℃, and even higher in some specialized processes. If this high-temperature tail gas directly enters the recovery tower, it will severely impact the tower's structure and purification function in many ways. Therefore, this solution provides a tail gas recovery device for desulfurization regeneration tanks that purifies the tail gas after cooling. Utility Model Content

[0004] The purpose of this invention is to provide a tail gas recovery device for desulfurization regeneration tanks, aiming to solve the problem that the tail gas emitted from desulfurization regeneration tanks is generally high-temperature under actual operating conditions, with temperatures typically reaching 100-300℃, and even higher in some special processes. If this high-temperature tail gas directly enters the recovery tower, it will cause many serious impacts on the tower's internal structure and purification function.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tail gas recovery device for a desulfurization regeneration tank, comprising a tail gas recovery tower, wherein an air inlet is installed on the outer wall of one side of the tail gas recovery tower near the bottom, and the other end of the air inlet is connected to one end of a connecting pipe via a flange.

[0006] A cooling sleeve is fitted onto the outer wall of the connecting pipe. A water inlet is installed on one side of the cooling sleeve, and the other end of the water inlet is connected to the outlet of the water pump. The water inlet of the water pump is connected to the outlet of the cooling water tank through a pipe. The water inlet of the cooling water tank is connected to the drain outlet through a pipe, and the other end of the drain outlet is connected to the cooling sleeve.

[0007] In order to prolong the time that the exhaust gas from the desulfurization regeneration tank flows through the inside of the connecting pipe, as a tail gas recovery device for the desulfurization regeneration tank according to the present invention, preferably, an annular sleeve is installed inside the connecting pipe, and a filling column is installed at the center end of the annular sleeve.

[0008] The transverse length of the annular sleeve is adapted to the transverse length of the connecting pipe. The outer wall of the annular sleeve is bonded to the inner wall of the connecting pipe. The inner wall of the annular sleeve is sealed to the outer wall of the filling column. The length of the filling column is the same as the length of the annular sleeve.

[0009] In order to enable the heat on the connecting pipe to be quickly absorbed by the cooling jacket, as a tail gas recovery device for desulfurization regeneration tank according to this utility model, preferably, the cooling jacket is made of flexible rubber material, the interior of the cooling jacket is hollow, the cooling jacket is interference-fitted onto the connecting pipe, and a heat-conducting ring is embedded in the inner wall of the cooling jacket, one side of the heat-conducting ring is in contact with the outer wall of the connecting pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] During operation, connect the connecting pipe to the exhaust gas outlet of the desulfurization regeneration tank. Simultaneously, start the water pump to discharge cooling water from the cooling water tank to the inlet, allowing the cooling water to enter the cooling jacket. Once inside the cooling jacket, the cooling water lowers the temperature of the heat-conducting rings. The exhaust gas from the desulfurization regeneration tank then flows along the spiral track formed by the annular sleeve and the packing column after entering the connecting pipe. This increases the flow time of the exhaust gas within the connecting pipe, allowing it to absorb a significant amount of heat through the interaction of the cooling jacket's heat-conducting rings. This lowers the temperature of the exhaust gas entering the exhaust gas recovery tower, preventing damage to the internal components of the tower from the high-temperature exhaust gas. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the left-side structure provided in an embodiment of this application.

[0014] Figure 2 This is a schematic diagram of the right-side structure provided for an embodiment of this application.

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting pipe provided in an embodiment of this application.

[0016] In the diagram: 1. Exhaust gas recovery tower; 2. Air inlet; 3. Connecting pipe; 31. Annular sleeve; 32. Packing column; 4. Cooling jacket; 41. Heat conduction ring; 5. Water inlet; 6. Water pump; 7. Cooling water tank; 8. Drain outlet. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 The present invention provides the following technical solution: a tail gas recovery device for a desulfurization regeneration tank, including a tail gas recovery tower 1, an air inlet 2 is installed on the outer wall of one side of the tail gas recovery tower 1 near the bottom, and the other end of the air inlet 2 is connected to one end of the connecting pipe 3 through a flange.

[0019] A cooling sleeve 4 is fitted onto the outer wall of the connecting pipe 3. A water inlet 5 is installed on one side of the cooling sleeve 4. The other end of the water inlet 5 is connected to the outlet of the water pump 6. The water inlet of the water pump 6 is connected to the outlet of the cooling water tank 7 through a pipe. The water inlet of the cooling water tank 7 is connected to the drain outlet 8 through a pipe. The other end of the drain outlet 8 is connected to the cooling sleeve 4.

[0020] During operation, the exhaust gas recovery tower 1 connects to the exhaust gas discharge pipe of the desulfurization regeneration tank via the inlet 2 and the connecting pipe 3. The connecting pipe 3 and its internal structure can be customized to match the length of use. In this way, the exhaust gas discharged from the desulfurization regeneration tank can be effectively recovered and purified by the exhaust gas recovery tower 1.

[0021] The cooling jacket 4 is made of thermally conductive silicone. The water inlet 5 and the drain outlet 8 on both sides of the cooling jacket 4 form the flow path of the cooling water, so that the cooling water in the cooling jacket 4 can be effectively circulated.

[0022] Preferably, an annular sleeve 31 is installed inside the connecting pipe 3, and a filling column 32 is installed at the center end of the annular sleeve 31;

[0023] The transverse length of the annular sleeve 31 is adapted to the transverse length of the connecting pipe 3. The outer wall of the annular sleeve 31 is bonded to the inner wall of the connecting pipe 3. The inner wall of the annular sleeve 31 is sealed to the outer wall of the filling column 32. The length of the filling column 32 is the same as the length of the annular sleeve 31.

[0024] In practical use, the annular sleeve 31 and the filling column 32 form a spiral trajectory between the inner wall of the connecting pipe 3 and the annular sleeve 31. During use, the exhaust gas will flow through the connecting pipe 3 along the spiral trajectory.

[0025] Preferably, the cooling jacket 4 is made of flexible rubber, the interior of the cooling jacket 4 is hollow, the cooling jacket 4 is interference-fitted onto the connecting pipe 3, and a heat-conducting ring 41 is embedded on the inner wall of the cooling jacket 4, one side of the heat-conducting ring 41 is in contact with the outer wall of the connecting pipe 3.

[0026] In practical use, the connecting pipe 3 must first be precisely connected to the exhaust gas outlet of the desulfurization regeneration tank. A tight connection must be ensured through flange sealing or other methods to prevent exhaust gas leakage. After connection, the water pump 6 is immediately started. The water pump 6 delivers cooling water from the cooling water tank 7 to the inlet 5 at a stable flow rate. Driven by the pressure of the water pump 6, the cooling water flows smoothly into the closed circulation channel inside the cooling jacket 4 through the inlet 5. The inner wall of the cooling jacket 4 is equipped with a heat-conducting ring 41 with excellent thermal conductivity. When low-temperature cooling water is injected, the temperature of the heat-conducting ring 41 is rapidly reduced through heat conduction, forming a low-temperature heat-conducting layer on the inner wall of the cooling jacket 4.

[0027] Meanwhile, the high-temperature exhaust gas generated by the desulfurization regeneration tank enters the connecting pipe 3. The exhaust gas does not flow in a straight line within the connecting pipe 3, but rather along a spiral track formed by the annular sleeve 31 and the filling column 32. This unique spiral structure design significantly increases the flow path length of the exhaust gas within the connecting pipe 3, thus significantly extending the contact time between the exhaust gas and the inner wall of the cooling jacket 4. During the flow of the exhaust gas along the spiral track, the low-temperature heat-conducting coil 41 within the cooling jacket 4 forms a strong heat exchange with the high-temperature exhaust gas. Based on the principles of convective and radiative heat transfer, the heat-conducting coil 41 continuously absorbs a large amount of heat from the exhaust gas, causing the exhaust gas temperature to continuously decrease.

[0028] After sufficient heat exchange, the low-temperature exhaust gas finally enters the exhaust gas recovery tower 1 for further treatment, effectively avoiding thermal damage to precision components such as spray devices, packing layers, and monitoring instruments inside the exhaust gas recovery tower 1 caused by the high-temperature exhaust gas, thus ensuring the stable operation and service life of the exhaust gas recovery tower 1.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tail gas recovery device for a desulfurization regeneration tank, comprising a tail gas recovery tower (1), an air inlet (2) is installed on the outer wall near the bottom of one side of the tail gas recovery tower (1), characterized in that, The other end of the air inlet (2) is connected with one end of the connecting pipe (3) through a flange; The outer wall of the connecting pipe (3) is sleeved with a cooling jacket (4), one side of the cooling jacket (4) is provided with a water inlet (5), the other end of the water inlet (5) is connected with the water outlet of a water pump (6), the water inlet of the water pump (6) is connected with the water outlet of a cooling water tank (7) through a pipeline, the water inlet of the cooling water tank (7) is connected with the water outlet of a drain (8) through a pipeline, and the other end of the drain (8) is connected with the cooling jacket (4).

2. A tail gas recovery unit for a desulphurisation regeneration tank according to claim 1, characterised in that: An annular sleeve (31) is arranged in the connecting pipe (3), and a filling column (32) is arranged at the center of the annular sleeve (31).

3. A tail gas recovery unit for a desulphurisation regeneration tank according to claim 2, characterised in that: The transverse length of the annular sleeve (31) is matched with the transverse length of the connecting pipe (3), and the outer wall of the annular sleeve (31) is bonded with the inner wall of the connecting pipe (3).

4. A tail gas recovery unit for a desulphurisation regeneration tank according to claim 2, characterised in that: The inner wall of the annular sleeve (31) is sealingly bonded with the outer wall of the filling column (32), and the length of the filling column (32) is the same as that of the annular sleeve (31).

5. A tail gas recovery unit for a desulphurisation regeneration tank according to claim 1 characterised in that: The cooling jacket (4) is made of flexible rubber material, the inside of the cooling jacket (4) is a hollow structure, and the cooling jacket (4) is interference-fitted on the connecting pipe (3).

6. A tail gas recovery unit for a desulphurisation regeneration tank according to claim 1 characterised in that: A heat-conducting ring (41) is embedded on the inner wall of the cooling jacket (4), and one side of the heat-conducting ring (41) is in contact with the outer wall of the connecting pipe (3).

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