Desulfurization and dust removal device for tail gas of carbonization furnace

Abstract

An inclined liquid inlet pipe and a liquid discharge pipe are arranged on one side of the lower part of a tank body, during use, absorption liquid can be introduced into the tank body through the inclined liquid inlet pipe, and tail gas generated by the carbonization furnace can enter the bottom of the tank body through a gas inlet pipe to be in full contact with the absorption liquid; harmful gas and dust in the tail gas can be absorbed; the other side of the lower part of the tank body is communicated with a circulating pipe, the upper end of the circulating pipe is communicated with a spraying pipe, meanwhile, the circulating pump is matched with the circulating pipe to realize the cyclic utilization of the absorption liquid, and meanwhile, the absorption liquid is sprayed out from each spray head and can be in contact with rising tail gas again, so that the desulfurization and dust removal effects are further improved; the activated carbon layer and the sponge layer are arranged in the tank body, then the rising gas is sequentially in contact with the sponge layer and the activated carbon layer for filtration, so that moisture and a small amount of dust in the gas are absorbed, harmful gas in the tail gas is absorbed again, the treatment effect and efficiency of the harmful gas are improved, and the treated tail gas is finally discharged through the gas outlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of carbonization furnace tail gas treatment, in particular to a carbonization furnace tail gas desulfurization and dust removal device. Background Art

[0002] In the production process of activated carbon, a carbonization furnace is usually used. During the use of the carbonization furnace, a large amount of exhaust gas will be generated. The exhaust gas contains harmful gases and dust. If it is directly discharged into the air without treatment, it will cause serious pollution to the environment. The current main treatment method is to use spraying to treat it. However, the purification rate of the exhaust gas using only the spraying method is not high. There is still a large sulfur content and dust in the exhaust gas. At the same time, the spray liquid is seriously wasted. Utility Model Content

[0003] The purpose of the present application is to provide a carbonization furnace tail gas desulfurization and dust removal device to solve the problems of poor treatment effect, low efficiency and waste of spray liquid in the existing tail gas treatment method.

[0004] In order to solve the above technical problems, the present application provides a carbonization furnace tail gas desulfurization and dust removal device, comprising:

[0005] A tank body, wherein one side of the lower part of the tank body is provided with an inclined liquid inlet pipe and a liquid discharge pipe, the bottom of the tank body is connected with an air inlet pipe, the other side of the lower part of the tank body is connected with a circulation pipe, a circulation pump is provided on the circulation pipe, the upper end of the circulation pipe extends into the tank body through one side of the tank body and is connected with a spray pipe, a plurality of nozzles are provided on the spray pipe, an activated carbon layer and a sponge layer located above the spray pipe are sequentially provided in the tank body from top to bottom, the activated carbon layer is installed by a filter plate installed in the tank body, the sponge layer is installed by an upper filter screen and a lower filter screen installed in the tank body, and an air outlet pipe is provided on the top of the tank body.

[0006] On the basis of the above embodiment, as a preferred implementation manner, it also includes a bag dust collector located on one side of the tank body, the exhaust pipe is connected to the lower part of one side of the bag dust collector, a plurality of filter bags are arranged in the bag dust collector, an ash discharge pipe is arranged at the bottom of the bag dust collector, an electromagnetic control valve is arranged on the ash discharge pipe, and the top of the bag dust collector is connected to an exhaust pipe.

[0007] Based on the above embodiment, as a preferred implementation mode, the lower filter plate is located in the mounting groove inside the tank body, and a spring connected to the top of the mounting groove is fixed on the lower filter net;

[0008] Correspondingly, a motor is fixed on one side of the tank body, and a connecting shaft extending into the tank body is fixed on one end of the output shaft of the motor. One end of the connecting shaft is rotatably connected to the inner wall of the tank body, and an eccentric wheel is fixed on the connecting shaft to abut against the lower side of the lower filter screen.

[0009] On the basis of the above embodiments, as a preferred implementation manner, there are multiple eccentric wheels, and the eccentric wheels are evenly distributed on the connecting shaft.

[0010] What needs to be explained in detail in the scheme is that there are multiple spray pipes, and each of the spray pipes is located on the same horizontal plane.

[0011] It should be further explained that a toxic gas detection device and an alarm are also provided on the exhaust pipe.

[0012] Compared with the prior art, the utility model provides a carbonization furnace tail gas desulfurization and dust removal device, including a tank body, a lower side of the tank body is provided with an inclined liquid inlet pipe and a liquid discharge pipe, the bottom of the tank body is connected with an air inlet pipe, when in use, the absorption liquid can be introduced into the tank body through the inclined feed pipe, the tail gas generated by the carbonization furnace can enter the bottom of the tank body through the air inlet pipe and fully contact with the absorption liquid, so as to absorb the harmful gas and dust in the tail gas; the other side of the lower part of the tank body is connected with a circulation pipe, the circulation pipe is provided with a circulation pump, the upper end of the circulation pipe extends into the tank body through one side of the tank body and is connected with a spray pipe, a plurality of nozzles are provided on the spray pipe, at the same time, the absorption liquid can be recycled through the circulation pump and the circulation pipe, and the absorption liquid is sprayed out from each nozzle at the same time , which can contact the rising exhaust gas again to further improve the desulfurization and dust removal effects; an activated carbon layer and a sponge layer located above the spray pipe are arranged in sequence from top to bottom in the tank body, and the activated carbon layer is installed by being installed on the filter plate, and the sponge layer is installed by the upper filter screen and the lower filter screen. After that, the rising gas contacts and is filtered with the sponge layer and the activated carbon layer in sequence, so as to absorb moisture and a small amount of dust in the gas, and absorb the harmful gas in the exhaust gas again, so as to improve the treatment effect and efficiency of the harmful gas. An outlet pipe is arranged on the top of the tank body, and the treated exhaust gas is finally discharged through the outlet pipe. The setting of the drain pipe can discharge the absorption liquid to the corresponding treatment equipment after the absorption liquid has been used for a period of time, so that fresh absorption liquid can enter again through the inclined liquid inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0014] Figure 1A schematic diagram of the structure of a carbonization furnace tail gas desulfurization and dust removal device provided in an embodiment of the present application;

[0015] Figure 2 A schematic diagram of the structure of a spray pipe provided in an embodiment of the present application;

[0016] In the figure: 1. tank body; 2. inclined liquid inlet pipe; 3. liquid discharge pipe; 30. control valve; 4. air inlet pipe; 5. circulation pipe; 6. circulation pump; 7. spray pipe; 8. nozzle; 9. activated carbon layer; 10. sponge layer; 11. filter plate; 12. upper filter screen; 13. lower filter screen; 14. outlet pipe; 15. bag filter; 16. filter bag; 17. ash discharge pipe; 18. electromagnetic control valve; 19. exhaust pipe; 20. installation slot; 21. spring; 22. motor; 220. support plate; 23. connecting shaft; 24. eccentric wheel; 25. toxic gas detection device; 26. alarm. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0018] The core of the present application is to provide a carbonization furnace tail gas desulfurization and dust removal device, which solves the problems of poor treatment effect, low efficiency and waste of spray liquid in the existing tail gas treatment method.

[0019] Figure 1 This is a schematic diagram of the structure of a carbonization furnace tail gas desulfurization and dust removal device provided in an embodiment of the present application. Figure 2 A schematic diagram of the structure of a spray pipe provided in the embodiment of the present application is shown in FIG. Figure 1 to Figure 2 shown.

[0020] Example 1

[0021] A carbonization furnace tail gas desulfurization and dust removal device comprises a tank body 1. The shape and size of the tank body 1 can be determined according to actual conditions. An inclined liquid inlet pipe 2 and a liquid discharge pipe 3 are arranged on one side of the lower part of the tank body 1. The liquid discharge pipe 3 is provided with a control valve 30. The absorption liquid can be passed into the bottom of the tank body 1 through the inclined liquid inlet pipe 2. The bottom of the tank body 1 is connected with an air inlet pipe 4. The other end of the air inlet pipe 4 is connected to the tail gas outlet of the carbonization furnace. The tail gas discharged from the carbonization furnace can enter the bottom of the tank body 1 through the air inlet pipe 4 and directly contact with the absorption liquid, so as to collect harmful gases and dust in the tail gas. The other side of the lower part of the tank body 1 is connected with a circulation pipe 5, on which a circulation pump 6 is arranged, and the upper end of the circulation pipe 5 extends into the tank body 1 through one side of the tank body 1, and the upper end of the circulation pipe 5 is connected with a spray pipe 7. After installation, the spray pipe 7 is located in the tank body 1, and a plurality of nozzles 8 are arranged on the spray pipe 7. When in use, the circulation pump 6 and the circulation pipe 5 cooperate to realize the recycling of the absorption liquid, thereby avoiding the waste of the absorption liquid. At the same time, the absorption liquid is pumped up and sprayed out through the nozzles 8, where it can contact with the rising gas again, thereby further improving the absorption effect and efficiency of harmful gases and dust.

[0022] An activated carbon layer 9 and a sponge layer 10 are sequentially arranged in the tank body 1 from top to bottom. The activated carbon layer 9 and the sponge layer 10 are located above the spray pipe 7. The activated carbon layer 9 is installed through a filter plate 11 installed in the tank body 1, and the sponge layer 10 is installed through an upper filter screen 12 and a lower filter screen 13 installed in the tank body 1. The gas in the rising process can contact and filter with the sponge layer 10 and the activated carbon layer 9 in turn, so as to collect moisture (water) and dust in the gas, and at the same time, the harmful gas in the gas is absorbed again (desulfurized) by the activated carbon layer 9, thereby improving the efficiency and effect of harmful gas and dust treatment. An outlet pipe 14 is arranged on the top of the tank body 1, and the treated gas can be discharged through the outlet pipe 14.

[0023] Example 2

[0024] On the basis of Example 1, a carbonization furnace tail gas desulfurization and dust removal device, in order to further absorb the dust in the tail gas, preferably, also includes a bag dust collector 15 located on one side of the tank body 1, the outlet pipe 14 is connected to the lower part of one side of the bag dust collector 15, a plurality of filter bags 16 are arranged in the bag dust collector 15, an ash discharge pipe 17 is arranged at the bottom of the bag dust collector 15, an electromagnetic control valve 18 is arranged on the ash discharge pipe 17, and an exhaust pipe 19 is connected to the top of the bag dust collector 15. The tail gas discharged through the outlet pipe 14 can enter the bag dust collector 15, and the dust in the tail gas is filtered by each filter bag 16 in the bag dust collector 15, and the filtered tail gas is discharged through the exhaust pipe 19.

[0025] On the basis of Example 1, a carbonization furnace tail gas desulfurization and dust removal device, in order to facilitate the squeezing of the sponge pad in the sponge layer 10 and ensure the absorption effect of the sponge layer 10, preferably, the lower filter 13 is located in the mounting groove 20 on the inner side of the tank body 1, and a spring 21 connected to the top of the mounting groove 20 is fixed on the lower filter 13; correspondingly, a motor 22 is fixed on one side of the tank body 1, and the motor 22 can be supported and fixed by a support plate 220 fixed on one side of the tank body 1, and one end of the output shaft of the motor 22 is fixed with a connecting shaft 23 extending into the tank body 1, one end of the connecting shaft 23 is rotatably connected to the inner side wall of the tank body 1, and an eccentric wheel 24 that conflicts with the lower side of the lower filter 13 is fixed on the connecting shaft 23. After using for a period of time, the motor 22 can be started to drive the connecting shaft 23 to rotate, and then drive the eccentric wheel 24 to rotate and squeeze the lower filter 13, so that the lower filter 13 moves up to squeeze the sponge pad, so as to squeeze out the water absorbed in the sponge pad and reuse it.

[0026] In the present embodiment, a carbonization furnace tail gas desulfurization and dust removal device is provided. In order to improve the squeezing effect on the sponge pad, preferably, there are multiple eccentric wheels 24 , and the eccentric wheels 24 are evenly distributed on the connecting shaft 23 .

[0027] On the basis of Example 1, a carbonization furnace tail gas desulfurization and dust removal device, in order to improve the spraying effect, preferably, a plurality of spray pipes 7 can be provided, and after installation, each spray pipe 7 is located on the same horizontal plane.

[0028] On the basis of Example 2, a carbonization furnace tail gas desulfurization and dust removal device, in order to facilitate the detection of toxic gases in the treated tail gas, preferably, a toxic gas detection device 25 and an alarm 26 are also provided on the exhaust pipe 19. The toxic gas detection device 25 detects the harmful gases in the tail gas in real time, and when the harmful gases are detected to be substandard, the alarm 26 is used to remind the relevant personnel to replace the activated carbon or inject fresh absorption liquid.

[0029] The utility model provides a carbonization furnace tail gas desulfurization and dust removal device, comprising a tank body 1, a lower side of the tank body 1 is provided with an inclined liquid inlet pipe 2 and a liquid discharge pipe 3, the bottom of the tank body 1 is connected with an air inlet pipe 4, when in use, the absorption liquid can be introduced into the tank body 1 through the inclined feed pipe, the tail gas generated by the carbonization furnace can enter the bottom of the tank body 1 through the air inlet pipe 4 and fully contact with the absorption liquid, so as to absorb the harmful gas and dust in the tail gas; the other side of the lower part of the tank body 1 is connected with a circulation pipe 5, the circulation pipe 5 is provided with a circulation pump 6, the upper end of the circulation pipe 5 extends into the tank body 1 through one side of the tank body 1 and is connected with a spray pipe 7, the spray pipe 7 is provided with a plurality of nozzles 8, at the same time, the circulation pump 6 cooperates with the circulation pipe 5 to realize the recycling of the absorption liquid, and at the same time, the absorption liquid is sprayed from each nozzle 8, which can be combined with the rising The exhaust gas contacts again to further improve the desulfurization and dust removal effects; an activated carbon layer 9 and a sponge layer 10 located above the spray pipe 7 are arranged in sequence from top to bottom in the tank body 1, the activated carbon layer 9 is installed by being installed on the filter plate 11, and the sponge layer 10 is installed by the upper filter screen 12 and the lower filter screen 13. After that, the rising gas contacts and is filtered with the sponge layer 10 and the activated carbon layer 9 in sequence to absorb moisture and a small amount of dust in the gas, and absorb harmful gases in the exhaust gas again to improve the treatment effect and efficiency of harmful gases. An outlet pipe 14 is arranged on the top of the tank body 1, and the treated exhaust gas is finally discharged through the outlet pipe 14. The setting of the drain pipe 3 can discharge the absorption liquid to the corresponding treatment equipment after the absorption liquid has been used for a period of time, so that it can re-enter fresh absorption liquid through the inclined liquid inlet pipe 2.

[0030] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art disclosed in the present application. The specification and examples are to be regarded as exemplary only, and the true scope of the present application is indicated by the claims.

[0031] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A carbonization furnace tail gas desulfurization and dust removal device, characterized in that: include: A tank body (1), wherein one side of the lower part of the tank body (1) is provided with an inclined liquid inlet pipe (2) and a liquid discharge pipe (3), the bottom of the tank body (1) is connected to an air inlet pipe (4), the other side of the lower part of the tank body (1) is connected to a circulation pipe (5), a circulation pump (6) is provided on the circulation pipe (5), the upper end of the circulation pipe (5) extends through one side of the tank body (1) into the tank body (1) and is connected to a spray pipe (7), and the spray pipe (7) is provided with There are a plurality of nozzles (8), and an activated carbon layer (9) and a sponge layer (10) are sequentially arranged in the tank body (1) from top to bottom, and are located above the spray pipe (7). The activated carbon layer (9) is installed through a filter plate (11) installed in the tank body (1), and the sponge layer (10) is installed through an upper filter screen (12) and a lower filter screen (13) installed in the tank body (1), and an air outlet pipe (14) is arranged at the top of the tank body (1).

2. The carbonization furnace tail gas desulfurization and dust removal device according to claim 1 is characterized in that: It also includes a bag dust collector (15) located on one side of the tank body (1), the air outlet pipe (14) is connected to the lower part of one side of the bag dust collector (15), a plurality of filter bags (16) are arranged in the bag dust collector (15), a dust discharge pipe (17) is arranged at the bottom of the bag dust collector (15), an electromagnetic control valve (18) is arranged on the dust discharge pipe (17), and the top of the bag dust collector (15) is connected to an exhaust pipe (19).

3. The carbonization furnace tail gas desulfurization and dust removal device according to claim 1, characterized in that: The lower filter screen (13) is located in a mounting groove (20) on the inner side of the tank body (1), and a spring (21) connected to the top of the mounting groove (20) is fixed on the lower filter screen (13); Correspondingly, a motor (22) is fixed to one side of the tank body (1), a connecting shaft (23) extending into the tank body (1) is fixed to one end of the output shaft of the motor (22), one end of the connecting shaft (23) is rotatably connected to the inner wall of the tank body (1), and an eccentric wheel (24) is fixed to the connecting shaft (23) and contacts the lower side of the lower filter screen (13).

4. The carbonization furnace tail gas desulfurization and dust removal device according to claim 3 is characterized in that: There are multiple eccentric wheels (24), and each eccentric wheel (24) is evenly distributed on the connecting shaft (23).

5. The carbonization furnace tail gas desulfurization and dust removal device according to claim 1, characterized in that: There are multiple spray pipes (7), and each of the spray pipes (7) is located on the same horizontal plane.

6. The carbonization furnace tail gas desulfurization and dust removal device according to claim 2, characterized in that: The exhaust pipe (19) is also provided with a toxic gas detection device (25) and an alarm (26).

Images