Ionic liquid desulfurization equipment with forced circulation

Abstract

The utility model relates to the technical field of ionic liquid desulfurization, and discloses ionic liquid desulfurization equipment with forced circulation, which comprises a desulfurization tower and a regeneration tower, one side of the outer part of the desulfurization tower is fixedly connected with a dust removal box, the outer part of the dust removal box is fixedly connected with an air inlet pipe, and the top of the dust removal box is fixedly connected with a motor; the output end of the motor penetrates through the inner wall of the dust removal box and is fixedly connected with a first bevel gear, the inner bottom of the dust removal box is fixedly connected with a supporting rod, the top of the supporting rod is rotationally connected with a second bevel gear, and the exterior of the second bevel gear is fixedly connected with a connecting rod. According to the utility model, through the mutual cooperation of the motor, the bevel gear I, the filter screen and other structures, the tail gas is filtered before entering the desulfurizing tower, the damage to equipment caused by the mixed tail gas is reduced, and the filter screen is continuously cleaned through the brush plate, so that the filter screen cannot be blocked, and a good filtering effect is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of ionic liquid desulfurization, in particular to an ionic liquid desulfurization device with forced circulation. Background Art

[0002] In the current traditional production process of smelting, chemical industry, etc., a large amount of sulfur dioxide gas is often produced. In order to achieve the safe emission of sulfur dioxide gas, it is usually necessary to carry out multi-level desulfurization treatment to achieve the emission of sulfur dioxide gas in compliance with the standard. At present, the main desulfurization methods include sodium alkali method, limestone desulfurization method and ionic liquid desulfurization method. Among them, the ionic liquid desulfurization method uses ionic liquid as a solvent, which can efficiently absorb and remove sulfide, thereby achieving the desulfurization treatment of fuel.

[0003] Although the ionic liquid desulfurization technology can effectively remove the sulfide contained in the tail gas, when the acid production tail gas has stable flue gas volume, low SO2 concentration, low requirements for the decomposition efficiency of the ionic liquid, large flue gas volume and large fluctuations, it will lead to an increase in steam expenditure costs, which is not conducive to the control of steam costs. In view of the above problems, the technicians in this field have proposed an ionic liquid desulfurization equipment with forced circulation to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an ionic liquid desulfurization equipment with forced circulation, aiming to improve the problem of high steam expenditure cost and unfavorable cost control in the prior art ionic liquid desulfurization when the acid production flue gas volume is stable, the SO2 concentration is low, and the decomposition efficiency of the ionic liquid is not high.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an ionic liquid desulfurization equipment with forced circulation, comprising a desulfurization tower and a regeneration tower, a dust removal box is fixedly connected to an external side of the desulfurization tower, an air intake pipe is fixedly connected to the external side of the dust removal box, a motor is fixedly connected to the top of the dust removal box, an output end of the motor passes through the inner wall of the dust removal box and is fixedly connected to bevel gear one, a support rod is fixedly connected to the inner bottom of the dust removal box, a bevel gear two is rotatably connected to the top of the support rod, a connecting rod is fixedly connected to the external side of the bevel gear two, the other end of the connecting rod is fixedly connected to a fixed shell, a limiting groove is provided inside the fixed shell, a plurality of springs are fixedly connected to the internal side of the limiting groove, a brush plate is fixedly connected to the other end of the plurality of springs, a filter is installed on an internal side of the dust removal box, and a forced circulation component is arranged on the external side of the regeneration tower.

[0006] Furthermore, the forced circulation component includes a forced circulation pump, which is fixedly connected to one side of the outside of the regeneration tower. Both input ends and output ends of the forced circulation pump are fixedly connected to connecting pipes, and the other side of the outside of the regeneration tower is fixedly connected to a reboiler through two infusion pipes.

[0007] Furthermore, a water pump is fixedly connected to the other side of the outside of the desulfurization tower, a spray pipe is fixedly connected to the output end of the water pump, and the other end of the spray pipe is arranged on the inner top of the desulfurization tower.

[0008] Furthermore, the outer side of the bevel gear one is meshingly connected with the outer side of the bevel gear two.

[0009] Furthermore, the brush plate fits the surface of the filter screen, and the brush plate is made of flexible material.

[0010] Furthermore, the two connecting pipes connected to the input end of the forced circulation pump are fixedly connected to the outside of the desulfurization tower and the regeneration tower respectively, and the two connecting pipes connected to the output end of the forced circulation pump are fixedly connected to the outside of the desulfurization tower and the regeneration tower respectively.

[0011] Furthermore, a steam inlet and a condensate outlet are provided on an outer side of the reboiler.

[0012] Furthermore, a feed pipe is provided at the top of the regeneration tower.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, through the mutual cooperation of the motor, bevel gear 1, bevel gear 2, brush plate, filter screen and other structures, the exhaust gas is filtered before entering the desulfurization tower, reducing the damage to the equipment caused by the mixed gas therein, and the filter screen is continuously cleaned by the brush plate, so that the filter screen will not be blocked and a good filtering effect is maintained.

[0015] 2. In the utility model, through the mutual cooperation of the regeneration tower, reboiler, forced circulation pump, connecting pipe and other structures, the forced circulation of ionic liquid is realized, the consumption of resources is reduced, and the expenditure of steam is reduced, which is conducive to controlling the steam cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of an ionic liquid desulfurization device with forced circulation proposed by the utility model;

[0017] Figure 2 This is a cross-sectional view of a dust removal box of an ionic liquid desulfurization device with forced circulation proposed by the utility model;

[0018] Figure 3This is a schematic diagram of the desulfurization tower structure of an ionic liquid desulfurization device with forced circulation proposed by the utility model;

[0019] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Desulfurization tower; 2. Dust removal box; 3. Inlet pipe; 4. Motor; 5. Bevel gear one; 6. Bevel gear two; 7. Support rod; 8. Connecting rod; 9. Fixed shell; 10. Limiting groove; 11. Spring; 12. Brush plate; 13. Filter screen; 14. Regeneration tower; 15. Forced circulation pump; 16. Reboiler; 17. Water pump; 18. Spray pipe; 19. Feed pipe; 20. Connecting pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1 , Figure 2 and Figure 4 The utility model provides an embodiment: an ionic liquid desulfurization device with forced circulation, comprising a desulfurization tower 1 and a regeneration tower 14, a dust removal box 2 is fixedly connected to one side of the outside of the desulfurization tower 1, an air intake pipe 3 is fixedly connected to the outside of the dust removal box 2, a motor 4 is fixedly connected to the top of the dust removal box 2, an output end of the motor 4 passes through the inner wall of the dust removal box 2 and is fixedly connected to a bevel gear 1 5, a support rod 7 is fixedly connected to the inner bottom of the dust removal box 2, a bevel gear 2 6 is rotatably connected to the top of the support rod 7, and the outer fixed end of the bevel gear 2 6 is fixedly connected to the inner wall of the dust removal box 2. A connecting rod 8 is fixedly connected, and the other end of the connecting rod 8 is fixedly connected to a fixed shell 9. A limiting groove 10 is provided inside the fixed shell 9. A plurality of springs 11 are fixedly connected inside the limiting groove 10. A brush plate 12 is fixedly connected to the other end of the plurality of springs 11. A filter screen 13 is installed on one side of the interior of the dust removal box 2. The outer side of the bevel gear 1 5 is meshed with the outer side of the bevel gear 2 6. The brush plate 12 fits with the surface of the filter screen 13. The brush plate 12 is made of flexible material. A forced circulation component is arranged on the outside of the regeneration tower 14.

[0024] Specifically, the desulfurization tower 1 and the regeneration tower 14 can respectively perform desulfurization and ion liquid circulation operations on the gas containing sulfide, thereby reducing pollution to the environment and improving resource utilization. The filter screen 13 inside the dust removal box 2 can filter the exhaust gas transmitted from the intake pipe 3 first, and then inject it into the desulfurization tower 1 for desulfurization treatment, thereby reducing the damage caused by mixed particles in the gas to the equipment, and improving the contact between the gas and the desulfurization liquid, accelerating the reaction efficiency, and the operation of the motor 4 can make the bevel gear 1 5 rotate, and under the support of the support rod 7 on the bevel gear 2 6, it can bring The movable bevel gear 2 6 rotates, and the connecting rod 8 is driven to rotate through the bevel gear 2 6, so that the brush plate 12 fixed on the fixed shell 9 can continuously clean the surface of the filter screen 13 fixed inside the dust removal box 2, so that the filter screen 13 will not be blocked due to long-term use, thereby having a good filtering effect on the exhaust gas. A plurality of springs 11 are fixed in the limiting groove 10 opened inside the fixed shell 9, which can push the brush plate 12 and make the brush plate 12 close to the surface of the filter screen 13, thereby ensuring the cleaning effect. At the same time, the limiting groove 10 limits the movement of the brush plate 12.

[0025] Reference Figure 1 and Figure 3 The forced circulation component includes a forced circulation pump 15, which is fixedly connected to one side of the outside of the regeneration tower 14. Both the input end and the output end of the forced circulation pump 15 are fixedly connected with a connecting pipe 20. The other side of the outside of the regeneration tower 14 is fixedly connected with a reboiler 16 through two liquid infusion pipes. The two connecting pipes 20 connected to the input end of the forced circulation pump 15 are respectively fixedly connected to the outside of the desulfurization tower 1 and the regeneration tower 14. The two connecting pipes 20 connected to the output end of the forced circulation pump 15 are respectively fixedly connected to the outside of the desulfurization tower 1 and the regeneration tower 14. A steam inlet and a condensate outlet are provided on one side of the outside of the reboiler 16.

[0026] Specifically, the two input ends and the output end of the forced circulation pump 15 are respectively connected to the connecting pipe 20, and the other end of the connecting pipe 20 is respectively connected to the desulfurization tower 1 and the regeneration tower 14, so that when the forced circulation pump 15 is in operation, the desulfurized ionic liquid in the desulfurization tower 1 can be transported to the regeneration tower 14, and the sulfur oxides therein are separated after being treated by the reboiler 16 connected to the outside of the regeneration tower 14, so that the ionic liquid can be recycled and used in the desulfurization tower 1 after being transported by the forced circulation pump 15, thereby improving the utilization rate of resources. Through the steam inlet and the condensate outlet provided on one side of the outside of the reboiler 16, and the steam inlet is located above the condensate outlet, the steam can be transported into the reboiler 16 to heat the ionic liquid, and the valve is controlled to facilitate the control of steam costs and reduce steam consumption.

[0027] Reference Figure 3 A water pump 17 is fixedly connected to the other side of the outside of the desulfurization tower 1 , and a spray pipe 18 is fixedly connected to the output end of the water pump 17 . The other end of the spray pipe 18 is arranged on the inner top of the desulfurization tower 1 .

[0028] Specifically, the alkaline desulfurization solution at the bottom of the desulfurization tower 1 is extracted by the water pump 17 and transported to the spray pipe 18. The spraying of the spray pipe 18 can increase the contact area with the sulfide in the exhaust gas, thereby accelerating the desulfurization rate and improving production efficiency.

[0029] Working principle: When this device is used for desulfurization, the exhaust gas first enters the dust removal box 2 through the air intake pipe 3, and then enters the desulfurization tower 1 after being filtered by the filter 13 inside the dust removal box 2. At this time, the operation of the water pump 17 causes the desulfurization solution inside the desulfurization tower 1 to be transported to the spray pipe 18, and the desulfurization solution reacts with the sulfide therein to absorb it when sprayed and falling through the spray pipe 18. Then, the ionic liquid containing sulfate can be transported to the regeneration tower 14 through the forced circulation pump 15, and organic amine rich liquid is added to the regeneration tower 14 through the feed pipe 19, so that the sulfate ions can be separated, and the ionic liquid is heated by the reboiler 16 to separate the sulfur oxides therein, and then the separated ionic liquid is transported to the desulfurization tower 1 through the forced circulation pump 15 for desulfurization operation, so that the ionic liquid can be recycled, resources are saved, and the control of steam costs is achieved.

[0030] Inside the dust removal box 2, the rotation of the motor 4 causes the bevel gear 1 5 to rotate, which in turn drives the bevel gear 2 6 to rotate on the top of the support rod 7. The bevel gear 2 6 drives the connecting rod 8 to rotate, so that the brush plate 12 fixed on the fixed shell 9 can continuously clean the surface of the filter screen 13 fixed inside the dust removal box 2, so that the filter screen 13 will not be blocked due to long-term use, thereby having a good filtering effect on the exhaust gas.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ionic liquid desulfurization device with forced circulation, comprising a desulfurization tower (1) and a regeneration tower (14), characterized in that: A dust removal box (2) is fixedly connected to one side of the outside of the desulfurization tower (1), an air intake pipe (3) is fixedly connected to the outside of the dust removal box (2), a motor (4) is fixedly connected to the top of the dust removal box (2), an output end of the motor (4) passes through the inner wall of the dust removal box (2) and is fixedly connected to a bevel gear 1 (5), a support rod (7) is fixedly connected to the inner bottom of the dust removal box (2), a bevel gear 2 (6) is rotatably connected to the top of the support rod (7), a connecting rod (8) is fixedly connected to the outside of the bevel gear 2 (6), the other end of the connecting rod (8) is fixedly connected to a fixed shell (9), a limiting groove (10) is provided inside the fixed shell (9), a plurality of springs (11) are fixedly connected to the inside of the limiting groove (10), and a brush plate (12) is fixedly connected to the other end of the plurality of springs (11), a filter screen (13) is installed on one side of the inside of the dust removal box (2), and a forced circulation component is arranged outside the regeneration tower (14).

2. The ionic liquid desulfurization equipment with forced circulation according to claim 1 is characterized in that: The forced circulation component comprises a forced circulation pump (15), the forced circulation pump (15) is fixedly connected to one side of the outside of the regeneration tower (14), both input ends and output ends of the forced circulation pump (15) are fixedly connected to a connecting pipe (20), and the other side of the outside of the regeneration tower (14) is fixedly connected to a reboiler (16) via two liquid infusion pipes.

3. The ionic liquid desulfurization equipment with forced circulation according to claim 1 is characterized in that: A water pump (17) is fixedly connected to the other side of the outside of the desulfurization tower (1), and a spray pipe (18) is fixedly connected to the output end of the water pump (17), and the other end of the spray pipe (18) is arranged on the inner top of the desulfurization tower (1).

4. The ionic liquid desulfurization equipment with forced circulation according to claim 1 is characterized in that: The outer side of the bevel gear 1 (5) is meshingly connected with the outer side of the bevel gear 2 (6).

5. The ionic liquid desulfurization equipment with forced circulation according to claim 1 is characterized in that: The brush plate (12) fits the surface of the filter screen (13), and the brush plate (12) is made of a flexible material.

6. The ionic liquid desulfurization equipment with forced circulation according to claim 2, characterized in that: The two connecting pipes (20) connected to the input end of the forced circulation pump (15) are respectively fixedly connected to the outside of the desulfurization tower (1) and the regeneration tower (14), and the two connecting pipes (20) connected to the output end of the forced circulation pump (15) are respectively fixedly connected to the outside of the desulfurization tower (1) and the regeneration tower (14).

7. The ionic liquid desulfurization equipment with forced circulation according to claim 2, characterized in that: A steam inlet and a condensate outlet are provided on the outer side of the reboiler (16).

8. The ionic liquid desulfurization equipment with forced circulation according to claim 2, characterized in that: A feed pipe (19) is provided at the top of the regeneration tower (14).

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