Flue gas treatment device

Abstract

The utility model provides a flue gas treatment device which comprises the following components: a housing which is provided with a reaction space, and a gas inlet and a gas outlet which are communicated with the reaction space; the slurry conveying pipe is arranged in the reaction space, and the slurry conveying pipe is provided with a slurry spraying head and is used for spraying reaction slurry into the reaction space; the filtering device comprises a container main body, a filtering cavity, an input port and an output port are formed in the container main body, the input port and the output port are communicated with the filtering cavity, the input port is used for receiving original reaction slurry, and the output port is used for being in butt joint with a slurry conveying pipe; the filter screen is arranged in the filter chamber so as to divide the filter chamber into two parts, and the input port and the output port are respectively positioned on two sides of the filter screen, so that reaction slurry entering the filter chamber from the input port flows to the output port after being filtered by the filter screen, and the quantity of large-volume solids entering the slurry conveying pipe along with the reaction slurry can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas treatment technical field, in particular to a flue gas treatment device. BACKGROUND

[0002] A large amount of flue gas will be produced in some industrial production processes, and these flue gases need to be treated and purified before being discharged into the atmosphere. At present, the flue gas is usually treated by gas-liquid reaction technology. Specifically, the flue gas to be treated is conveyed into a reaction container, and a slurry delivery pipe provided with a slurry spray head is used to spray reaction slurry for reaction with the flue gas into the reaction container, so as to remove harmful substances in the flue gas by the reaction of the reaction slurry and the flue gas. However, when the reaction slurry is delivered into the reaction container, due to the existence of large-volume dirt or condensed solid particles in the reaction slurry, the slurry delivery pipe line or the slurry spray head is often blocked, which adversely affects the flue gas treatment. SUMMARY

[0003] An object of the utility model is to provide a flue gas treatment device capable of reducing large-volume solids in the reaction slurry entering the slurry delivery pipe.

[0004] In particular, the utility model provides a flue gas treatment device, comprising:

[0005] a housing forming a reaction space, an air inlet and an air outlet communicating with the reaction space;

[0006] a slurry delivery pipe arranged in the reaction space, the slurry delivery pipe being provided with a slurry spray head for spraying reaction slurry into the reaction space; and

[0007] a filtering device comprising:

[0008] a container body forming a filtering chamber, an input port and an output port communicating with the filtering chamber, the input port being used for receiving original reaction slurry, and the output port being used for connecting the slurry delivery pipe; and

[0009] a filter screen arranged in the filtering chamber, so as to divide the filtering chamber into two parts, and the input port and the output port are respectively located on two sides of the filter screen, so that the reaction slurry entering the filtering chamber from the input port flows to the output port after being filtered by the filter screen.

[0010] Optionally, the container body is in a cylindrical shape, the input port is arranged at one end of the container body, and the output port is arranged on the side wall of the container body.

[0011] Optionally, the filter screen is provided with an inclined section, which is arranged at one end of the filter screen close to the input port and is inclined along the axis of the input port in a direction away from the input port.

[0012] Optionally, the acute angle formed between the inclined section and the axis of the input port is 10-40 degrees.

[0013] Optionally, the pore size of the filter holes of the filter screen is 5-30 mm.

[0014] Optionally, the filter device is further provided with a blowdown pipe, one end of which is in communication with the filter chamber and one end of which is in communication with the reaction space, and the communication position of the blowdown pipe with the filter chamber is on the same side of the filter screen as the input port.

[0015] Optionally, the diameter of the blowdown pipe is 40-90 mm.

[0016] Optionally, the end of the blowdown pipe away from the filter chamber is provided with a ball head, the ball head is provided with a spherical cavity and an inlet and an outlet in communication with the spherical cavity, the diameter of the spherical cavity is greater than the diameter of the inlet and the outlet, the inlet is in communication with the blowdown pipe, and the outlet is in communication with the reaction space, so that the blowdown pipe is in communication with the reaction space via the ball head.

[0017] Optionally, the axes of the inlet and the outlet of the ball head are perpendicular to each other.

[0018] Optionally, the bottom surface of the shell is provided with a sump, and the bottom surface of the shell is inclined from high to low around the sump.

[0019] The flue gas treatment device of the utility model communicates with the filter device, the reaction slurry can enter the filter chamber through the input port of the filter device, the reaction slurry filtered by the filter screen flows to the output port, and then enters the slurry delivery pipe connected with the output port, the reaction slurry in the slurry delivery pipe is sprayed to the reaction space from the slurry spray head on the slurry delivery pipe, and reacts with the flue gas entering the reaction space, so that the flue gas is treated. Because the reaction slurry entering the slurry delivery pipe is filtered by the filter device, the number of large solid bodies entering the slurry delivery pipe with the reaction slurry can be reduced, so that the plugging of the slurry delivery pipe or the slurry spray head on the slurry delivery pipe is reduced.

[0020] The above and other objects, advantages and features of the utility model will be more apparent from the following detailed description of the specific embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Some specific embodiments of the present application will be described in detail below with reference to the attached drawings. The same reference numbers in different drawings denote the same or similar components or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

[0022] Figure 1 is a first schematic isometric view of a flue gas treatment device according to an embodiment of the present application;

[0023] Figure 2 is a second schematic isometric view of a flue gas treatment device according to an embodiment of the present application;

[0024] Figure 3 is a schematic cross-sectional view of a flue gas treatment device according to an embodiment of the present application;

[0025] Figure 4 is a schematic view of a filter device and a slurry delivery pipe in a flue gas treatment device according to an embodiment of the present application;

[0026] Figure 5 is a schematic cross-sectional view of a filter device in a flue gas treatment device according to an embodiment of the present application;

[0027] Figure 6 is a schematic cross-sectional view of a filter device and a part of a slurry delivery pipe in a flue gas treatment device according to an embodiment of the present application;

[0028] Figure 7 is a schematic cross-sectional view of a ball head of a filter device in a flue gas treatment device according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] Those skilled in the art will understand that the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments of the present application, and are intended to explain the technical principles of the present application, rather than to limit the protection scope of the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should still fall within the protection scope of the present application.

[0030] In the description of the utility model, it needs to understand that the orientation or position relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" are based on the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0031] Further, it needs to be further explained that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can also be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] As shown in Figures 1 to 6 The flue gas treatment device 10 includes a shell 100, two slurry conveying pipes 200 and a filtering device 300. The shell 100 is formed with a reaction space 101, and an air inlet 102 and an air outlet 103 communicating with the reaction space 101. The slurry conveying pipe 200 is arranged in the reaction space 101, and the slurry conveying pipe 200 is provided with a slurry spraying head (not marked in the figure) for spraying reaction slurry into the reaction space 101. The filtering device 300 includes a container body 310 and a filter screen 320, the container body 310 is formed with a filtering chamber 311, and an input port 312 and an output port 313 communicating with the filtering chamber 311, the input port 312 is used for receiving original reaction slurry, and the output port 313 is used for connecting the slurry conveying pipe 200. The filter screen 320 is arranged in the filtering chamber 311, so as to divide the filtering chamber 311 into two parts, and the input port 312 and the output port 313 are respectively located on the two sides of the filter screen 320, so that the reaction slurry entering the filtering chamber 311 through the input port 312 flows to the output port 313 after being filtered by the filter screen 320.

[0033] As shown in Figures 1 to 3As shown, specifically, the shell 100 can be divided into a main shell part 110, a top shell part 120 and a bottom plate 130. The main shell part 110 is in the shape of a square tube with open top and bottom ends, and the air inlet 102 is arranged on one side wall of the main shell part 110 and located at the bottom of the side wall. The top shell part 120 is also open at the top and bottom ends, and the top shell part 120 is arranged at the top end of the main shell part 110, thereby connecting with the internal space of the main shell part 110. The top opening of the top shell part 120 is the air outlet 103. The bottom plate 130 is arranged at the bottom end opening of the main shell part 110, thereby closing the bottom end of the main shell part 110.

[0034] It should be noted that the shell 100 is divided into the main shell part 110, the top shell part 120 and the bottom plate 130 for the convenience of explaining the scheme of the present embodiment, and the main shell part 110, the top shell part 120 and the bottom plate 130 can be separately formed or integrally formed.

[0035] Reference Figures 1 to 3 As shown, for the convenience of explanation, the side wall where the air inlet 102 is located is defined as the front side wall, and the side wall opposite to it is defined as the rear side wall, that is, the front-rear direction of the equipment along the air inlet direction of the air inlet 102, and the left-right direction of the equipment is perpendicular to the air inlet direction.

[0036] As shown Figures 1 to 3 The filter device 300 is arranged at the rear side of the shell 100, one end of the slurry conveying pipe 200 is located outside the shell 100 and communicates with the filter device 300, the slurry conveying pipe 200 penetrates through the rear side wall of the equipment and extends into the reaction space 101, and extends from the rear side wall to the front side wall.

[0037] As shown Figures 1 to 5 The filter device 300 is provided with two output ports 313, and the two slurry conveying pipes 200 respectively communicate with the two output ports 313 of the filter device 300. In the process of treating the flue gas, the flue gas to be treated enters the reaction space 101 through the air inlet 102, the reaction slurry enters the filter chamber 311 through the input port 312 of the filter device 300, and the reaction slurry filtered by the filter screen 320 flows to the two output ports 313, and then enters the two slurry conveying pipes 200 respectively. The reaction slurry entering the slurry conveying pipe 200 is sprayed into the reaction space through the slurry spray head on the slurry conveying pipe 200, and reacts with the flue gas entering the reaction space 101, thereby treating the flue gas. The treated flue gas flows out of the reaction space 101 through the air outlet 103.

[0038] In this embodiment, by providing a filter device 300 connected to the slurry delivery pipe 200, the reaction slurry can enter the filter chamber 311 through the inlet 312 of the filter device 300. After being filtered by the filter screen 320, the reaction slurry flows to the outlet 313 and then enters the slurry delivery pipe 200 connected to the outlet 313. The reaction slurry entering the slurry delivery pipe 200 is sprayed into the reaction space from the slurry spray head on the slurry delivery pipe 200, reacting with the flue gas entering the reaction space 101, thereby treating the flue gas. Because the reaction slurry entering the slurry delivery pipe 200 has been filtered by the filter device 300, the amount of large-volume solids entering the slurry delivery pipe 200 with the reaction slurry can be reduced, thereby helping to reduce the occurrence of blockage of the slurry delivery pipe 200 or the slurry spray head on the slurry delivery pipe 200.

[0039] It should be noted that in some other embodiments, the number of slurry delivery pipes may be three or more, and correspondingly, the number of output ports of the filter device can be set according to the number of slurry delivery pipes.

[0040] like Figures 1 to 5 As shown, specifically, the container body 310 is cylindrical, with an inlet 312 located at one end and an outlet 313 located on the side wall of the container body 310. The container body 310 is a cylinder with one open end and the other closed, with the end opening being the inlet 312. The two outlets 313 are located on the side wall of the container body 310, and the edge of the filter screen 320 is connected to the inner side wall of the container body 310, with the connecting line forming a region surrounding the location of the outlets 313, thereby allowing the filter screen 320 to separate the inlet 312 and the outlets 313.

[0041] By setting the container body 310 in a cylindrical shape and placing the inlet 312 at one end of the container body 310, the reaction slurry entering the filter chamber 311 through the inlet 312 can flow along the axis of the container body 310, thereby having good fluidity and facilitating full diffusion within the filter chamber 311. This helps to improve the uniformity of the reaction slurry distribution on the filter screen 320 and enhance the filtration effect.

[0042] It should be noted that in some other embodiments, the input port and the output port may both be located on the side wall of the container body.

[0043] like Figures 1 to 5As shown, the filter screen 320 is provided with an inclined section, which is arranged at one end of the filter screen 320 close to the input port 312 and is inclined along the axis of the input port 312 in a direction away from the input port 312. Specifically, the filter screen 320 has an inclined section and a straight section, the straight section extends along the axis of the container body 310, and the inclined section is arranged at one end of the straight section close to the input port 312. The inclined section is also inclined along the axis of the input port 312, that is, the axis of the container body 310, in a direction away from the input port 312, and finally meets the straight section.

[0044] By arranging the inclined section at one end of the filter screen 320 close to the input port 312, the reaction slurry from the input port 312 can be guided to flow more smoothly along the axis of the container body 310.

[0045] As shown, Figures 1 to 5 The acute angle formed between the inclined section and the axis of the input port 312 is set to be 10-40 degrees, specifically, the acute angle formed between the plane on which any three points on the side of the inclined section facing the input port 312 are located and the axis of the input port 312 is set to be 10-40 degrees, for example, it can be 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, or 40 degrees, etc. The above configuration can ensure a more appropriate guiding effect.

[0046] Preferably, the acute angle formed between the inclined section and the axis of the input port 312 is set to be 20-30 degrees.

[0047] As shown in Figures 1 to 5 The pore size of the filter holes (not shown in the figure) of the filter screen 320 is set to be 5-30 mm, for example, it can be 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, or 30 mm, etc. The above configuration makes the filter screen 320 have a better filtering effect and does not cause a significant adverse impact on the flowability of the reaction slurry passing through the filter screen 320.

[0048] Preferably, the pore size of the filter holes of the filter screen 320 is set to be 10-20 mm.

[0049] As shown in Figures 1 to 6 The filter device 300 is also provided with a blowdown pipe 330, one end of which is in communication with the filter chamber 311 and one end of which is in communication with the reaction space 101, and the communication position of the blowdown pipe 330 with the filter chamber 311 is on the same side of the filter screen 320 as the input port 312.

[0050] As shown in Figures 1 to 6As shown, specifically, the drain pipe 330 passes through the rear side wall of the flue gas treatment device 10, one end of the drain pipe 330 is located outside the rear side wall of the flue gas treatment device 10 and communicates with the filtering chamber 311, and the other end of the drain pipe 330 is located inside the rear side wall of the flue gas treatment device 10, that is, inside the reaction space 101, and communicates with the reaction space 101.

[0051] By providing the drain pipe 330 in the filtering device 300, one end of the drain pipe 330 communicates with the filtering chamber 311, one end of the drain pipe 330 communicates with the reaction space 101, and the communicating position of the drain pipe 330 with the filtering chamber 311 is located on the same side of the filter screen 320 as the input port 312, so that the solid blocked by the filter screen 320 in the filtering chamber 311 can enter the drain pipe 330 along with part of the reaction slurry, and then be discharged into the reaction space 101 through the drain pipe 330. On the one hand, it can avoid the solid filtered out by the filter screen 320 from accumulating in the filtering chamber 311 to affect the filtering effect of the filtering device 300. On the other hand, the solid filtered out by the filter screen 320 is discharged into the reaction space 101 along with part of the reaction slurry, and this part of the reaction slurry can participate in the flue gas reaction in the reaction space 101, reducing waste, and the solid can fall to the bottom of the shell 100 together with other dirt generated in the reaction space 101, facilitating unified collection and treatment.

[0052] Referring to Figures 1 to 6 As shown, the diameter of the drain pipe 330 is set to 40-90 mm, for example, it can be 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, or 90 mm, etc. By setting the diameter of the drain pipe 330 to 40-90 mm, it can avoid the solid filtered out by the filter screen 320 from blocking the drain pipe 330. Moreover, because the effect of discharging reaction slurry by the drain pipe 330 is not as good as that of the slurry spray head, avoiding the drain pipe 330 being too thick helps to avoid too much reaction slurry being discharged into the reaction space 101 through the drain pipe 330.

[0053] As shown in Figures 1 to 7 As shown, the end of the drain pipe 330 away from the filtering chamber 311 is provided with a ball head 340, the ball head 340 is provided with a spherical cavity 341, an inlet 342 and an outlet 343 communicating with the spherical cavity 341, the diameter of the spherical cavity is greater than the diameter of the inlet 342 and the outlet 343, the inlet 342 communicates with the drain pipe 330, and the outlet 343 communicates with the reaction space 101, so that the drain pipe 330 communicates with the reaction space 101 through the ball head 340. That is, the ball head 340 is arranged at the end of the drain pipe 330 located in the reaction space 101, and the reaction slurry and solid in the drain pipe 330 first enter the spherical cavity 341 through the inlet 342, and then are discharged into the reaction space 101 through the outlet 343.

[0054] By setting the ball head 340 at one end of the blowdown pipe 330 located in the reaction space 101, the reaction slurry and solid in the ball head blowdown pipe 330 first enters the spherical cavity 341 through the inlet 342, and then is discharged from the outlet 343 into the reaction space 101, so that the spherical cavity 341 can play a buffering role on the reaction slurry, reduce the flow rate, and avoid excessive impact on other components in the reaction space 101 when discharging the solid, thereby preventing damage to other components.

[0055] As shown in Figure 7 , the axes of the inlet 342 and the outlet 343 of the ball head 340 are perpendicular to each other, thereby further reducing the impact force of discharging the solid.

[0056] As shown in Figures 1 to 3 , the bottom surface of the shell 100 is provided with the sump 104, and the bottom surface of the shell 100 is inclined from high to low from the periphery of the sump 104 to the position where the sump 104 is located. Specifically, the bottom plate 130 is provided with the sump 104, and the bottom plate 130 is inclined to the sump 104. Such a structure allows the solid discharged by the blowdown pipe 330 and other impurities in the reaction space 101 to fall on the bottom surface of the shell 100 and be collected in the sump 104, and then be discharged from the sump 104, which is conducive to the collection and subsequent treatment of impurities and reaction slurry.

[0057] At this point, those skilled in the art should recognize that although the present application has been shown and described in detail in the above embodiments, many other variations or modifications can be determined or deduced directly from the disclosure of the present application in accordance with the principles of the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all these other variations or modifications.

Claims

1. A flue gas treatment apparatus, characterized in that, The device comprises: a housing, which is formed with a reaction space, and a gas inlet and a gas outlet communicating with the reaction space; a slurry delivery pipe, which is arranged in the reaction space, and is provided with a slurry spraying head for spraying reaction slurry into the reaction space; and a filtering device, which comprises: a container body, which is formed with a filtering chamber, and an input port and an output port communicating with the filtering chamber, the input port being used for receiving raw reaction slurry, and the output port being used for connecting the slurry delivery pipe; and a filtering screen, which is arranged in the filtering chamber, so as to divide the filtering chamber into two parts, and the input port and the output port are respectively located on two sides of the filtering screen, so that the reaction slurry entering the filtering chamber through the input port flows to the output port after being filtered by the filtering screen.

2. The flue gas treatment device according to claim 1, wherein the container body is in a cylindrical shape, the input port is arranged at one end of the container body, and the output port is arranged on the sidewall of the container body.

3. The flue gas treatment device according to claim 2, wherein the filtering screen is provided with an inclined section, the inclined section is arranged at one end of the filtering screen close to the input port, and is inclined along the axis of the input port in a direction away from the input port.

4. The flue gas treatment device according to claim 3, wherein an acute angle formed by the inclined section and the axis of the input port is arranged to be 10-40 degrees.

5. The flue gas treatment device according to claim 1, wherein the pore size of the filtering holes of the filtering screen is arranged to be 5-30 mm.

6. The flue gas treatment device according to claim 1, wherein the filtering device is further provided with a blowdown pipe, one end of the blowdown pipe communicates with the filtering chamber, one end of the blowdown pipe communicates with the reaction space, and the communication position of the blowdown pipe with the filtering chamber is on the same side of the filtering screen as the input port.

7. The flue gas treatment device according to claim 6, wherein the pipe diameter of the blowdown pipe is arranged to be 40-90 mm.

8. The flue gas treatment device according to claim 6, wherein a ball head part is arranged at one end of the blowdown pipe away from the filtering chamber, the ball head part is provided with a spherical cavity, and an inlet and an outlet communicating with the spherical cavity, the diameter of the spherical cavity is greater than the diameter of the inlet and the outlet, the inlet communicates with the blowdown pipe, and the outlet communicates with the reaction space, so that the blowdown pipe communicates with the reaction space via the ball head part.

9. The flue gas treatment device according to claim 8, wherein the axes of the inlet and the outlet of the ball head part are perpendicular to each other.

10. The flue gas treatment device according to claim 6, wherein a blowdown pool is arranged on the bottom surface of the housing, and the bottom surface of the housing is inclined from high to low around the blowdown pool. ​ ​

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