Injection mechanism for coal-fired flue gas activated carbon injection demercuration

Abstract

The invention provides a coal-fired flue gas activated carbon injection demercuration injection mechanism which comprises a base plate, a storage box, an adsorption box and a dust remover, the storage box, the adsorption box and the dust remover are fixedly mounted at the top of the base plate, an air inlet is formed in the top of the adsorption box, and a spraying pump is fixedly mounted on the left side of the adsorption box; the material storage box communicates with the material spraying pump through a connecting pipe, and a spiral bin is fixedly formed in the adsorption box; and a spraying pipe is rotatably mounted in the air inlet, a transmission blade is rotatably mounted in the middle of the air inlet, a protective shell is fixedly mounted on the right side of the adsorption box, and two sets of belt wheels are rotatably mounted in the protective shell. The flue gas purification device has the technical effects that through the design of the spiral bin in the adsorption box, the contact time between flue gas and activated carbon is prolonged, it is guaranteed that the activated carbon can thoroughly adsorb mercury in the flue gas, the flue gas purification efficiency is guaranteed, more importantly, energy consumption is reduced, and the flue gas purification device is more environmentally friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of coal-fired flue gas treatment, and in particular relates to an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas. Background Art

[0002] Coal flue gas refers to the gaseous substances that pollute the environment produced when coal and other fossil fuels are burned. The process of coal flue gas production is mostly caused by insufficient utilization and incomplete combustion of fuel. Its components are nitrogen, carbon dioxide, mercury, water vapor and sulfide. In order to purify coal flue gas, multiple steps are usually required, and activated carbon demercurization is one of them.

[0003] Activated carbon is a porous solid substance with a large number of micropores and mesopores on its surface, which can provide a huge specific surface area. The activated carbon injection demercurization technology uses the adsorption properties of activated carbon to capture mercury in coal-fired flue gas. After activated carbon is sprayed into the coal-fired flue gas, the activated carbon particles will come into contact with the mercury in the flue gas and adsorb the mercury to achieve the removal of mercury.

[0004] At present, during the demercuration operation, it is necessary to spray activated carbon into the coal-fired flue gas pipeline. For example, an injection mechanism for demercuration of coal-fired flue gas activated carbon is disclosed with application number 201820391384.8. The device forms a reverse airflow through the rotation of fan blades, thereby reducing the speed of flue gas flow in the demercuration tube body, thereby reducing the effect of excessive airflow on the adsorption efficiency of activated carbon. However, in actual use, the convection of flue gas will increase the energy consumption of the motor and increase the load. In addition, the high temperature of the coal-fired flue gas will greatly shorten the service life of the convection mechanism, further increasing the purification cost. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art and provides a new technical solution of an injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon.

[0006] According to one aspect of the present invention, there is provided an injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon, comprising a base plate, a material storage box, an adsorption box and a dust collector, wherein the material storage box, the adsorption box and the dust collector are fixedly installed on the top of the base plate, an air inlet is provided on the top of the adsorption box, a material injection pump is fixedly installed on the left side of the adsorption box, the material storage box and the material injection pump are connected via a connecting pipe, a spiral bin is fixedly provided inside the adsorption box, and an air outlet pipe is fixedly installed on the right side of the adsorption box;

[0007] A spray pipe is rotatably installed inside the air inlet, a transmission blade is rotatably installed on the side of the spray pipe, a protective shell is fixedly installed on the right side of the adsorption box, two sets of pulleys are rotatably installed inside the protective shell, the two sets of pulleys are connected by synchronous belt transmission, one set of pulleys is fixedly connected to the transmission blade, and a transmission rod is fixedly installed on one end of the other set of pulleys, a limit plate is fixedly installed inside the protective shell, a rack is movably installed on one end of the limit plate, a transmission frame is fixedly installed on the middle part of the outer wall of the rack, a rotating head is movably installed inside the transmission frame, and one end of the rotating head is fixedly connected to the transmission rod.

[0008] Preferably, a feed port is provided at the top of the material storage box, two groups of crushing rollers are rotatably installed inside the material storage box, a shell is fixedly installed on the left side wall of the material storage box, two groups of gears 2 are rotatably installed inside the shell, the two groups of gears 2 are meshed with each other, and one end of the two groups of gears 2 penetrates into the interior of the material storage box and is fixedly connected to the crushing rollers, a first motor is fixedly installed on the outer wall of the shell, and the output shaft of the first motor is fixedly connected to one of the groups of gears 2.

[0009] Preferably, limiting cylinders are fixedly installed at the four corners of the bottom of the inner wall of the material storage box, fixed blocks are movably installed inside the limiting cylinders, movable blocks are fixedly installed on the tops of the four groups of fixed blocks, a vibration rod is rotatably installed between the bottom of the movable block and the material storage box, the outer wall of the vibration rod and the movable block abut against each other, a second motor is fixedly installed on the outer wall of the material storage box, and the output shaft of the second motor is fixedly connected to the vibration rod.

[0010] Preferably, one end of the transmission rod is fixedly connected to the center of the pulley, and the other end of the transmission rod is fixedly connected to the rotating head, and the rotating head is movably arranged inside the transmission frame.

[0011] Preferably, a gear 1 is rotatably mounted on the outer wall of the adsorption box, one end of the gear 1 penetrates into the interior of the adsorption box and is fixedly connected to the spray pipe, and the gear 1 and the rack are meshed with each other.

[0012] Preferably, one end of the air outlet pipe is connected to the middle of the spiral bin, and the other end of the air outlet pipe is connected to a dust collector, and the dust collector is used to absorb particulate matter in the coal-fired flue gas.

[0013] Preferably, guide plates are fixedly installed on both the front and rear sides of the storage box, and the guide plates are located on the front and rear sides of the two groups of crushing rollers to prevent the activated carbon from splashing.

[0014] Preferably, the fixing block and the bottom inner wall of the material storage box are elastically connected via a spring.

[0015] Optionally, the top of the movable block is arranged to be inclined.

[0016] Optionally, a guide groove is provided on the top of the movable block.

[0017] A technical effect of the present invention is:

[0018] In the embodiment of the present application, through the setting of the transmission blades, the force generated by the flue gas flow will drive the transmission blades to rotate, and further the two sets of pulleys rotate synchronously, and drive the rack to move forward and backward, so that the spray pipe can swing. Compared with the traditional device, this device can not only make the distribution of activated carbon in the flue gas more uniform through the swing of the spray pipe, but also through the design of the spiral bin inside the adsorption box, the contact time between the flue gas and the activated carbon can be prolonged, ensuring that the activated carbon can thoroughly adsorb the mercury in the flue gas, thereby ensuring the purification efficiency of the flue gas, and more importantly, it also saves energy consumption and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of an adsorption box of an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas according to one embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the spiral bin structure of an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas according to one embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of a pulley structure of an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the transmission blade structure of an injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of a guide plate of an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the guide groove structure of an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas according to an embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of a limiting cylinder of an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas according to one embodiment of the present invention;

[0027] Fig. 9This is a schematic diagram of the protective shell structure of an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas according to an embodiment of the present invention;

[0028] Fig.10 A schematic diagram of a rack structure of an injection mechanism for removing mercury by injection of activated carbon from coal-fired flue gas according to an embodiment of the present invention;

[0029] Fig.11 The present invention is a schematic diagram of a transmission rod structure of an injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to an embodiment of the present invention.

[0030] In the figure: 1. substrate; 2. storage box; 3. adsorption box; 4. dust collector; 5. spray pump; 6. air inlet; 7. spiral bin; 8. air outlet pipe; 9. spray pipe; 10. transmission blade; 11. protective shell; 12. pulley; 13. synchronous belt; 14. transmission rod; 15. rotating head; 16. limit plate; 17. rack; 18. transmission frame; 19. gear one; 20. feed inlet; 21. crushing roller; 22. shell; 23. gear two; 24. first motor; 25. movable block; 26. guide groove; 27. connecting pipe; 28. limit cylinder; 29. ​​fixed block; 30. spring; 31. vibration rod; 32. second motor; 33. guide plate. DETAILED DESCRIPTION

[0031] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0032] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0033] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] like Figures 1 to 11 As shown, an embodiment of the present invention provides an injection mechanism for activated carbon injection demercuration of coal-fired flue gas, comprising a substrate 1, a storage box 2, an adsorption box 3 and a dust collector 4, the storage box 2, the adsorption box 3 and the dust collector 4 are fixedly installed on the top of the substrate 1, an air inlet 6 is opened on the top of the adsorption box 3, a spray pump 5 is fixedly installed on the left side of the adsorption box 3, the storage box 2 and the spray pump 5 are connected through a connecting pipe 27, a spiral bin 7 is fixedly opened inside the adsorption box 3, and an air outlet pipe 8 is fixedly installed on the right side of the adsorption box 3;

[0037] A spray pipe 9 is rotatably installed inside the air inlet 6, and a transmission blade 10 is rotatably installed on the side of the spray pipe 9. A protective shell 11 is fixedly installed on the right side of the adsorption box 3. Two groups of pulleys 12 are rotatably installed inside the protective shell 11, and the two groups of pulleys 12 are connected by a synchronous belt 13. One group of the pulleys 12 is fixedly connected to the transmission blade 10, and the other group of the pulleys 12 is fixedly installed at one end of a transmission rod 14. A limit plate 16 is fixedly installed inside the protective shell 11, and a rack 17 is movably installed at one end of the limit plate 16. A transmission frame 18 is fixedly installed in the middle of the outer wall of the rack 17, and a rotating head 15 is movably installed inside the transmission frame 18, and one end of the rotating head 15 is fixedly connected to the transmission rod 14.

[0038] When activated carbon is needed to remove mercury from coal-fired flue gas, the staff first starts the first motor 24 and puts the activated carbon particles into the feed port 20. At this time, the first motor 24 drives the gear 23 to rotate, and the two sets of gears 23 mesh with each other, so that the two sets of crushing rollers 21 rotate synchronously to crush the activated carbon particles to ensure consistent particle size and avoid excessively large particles from burdening the subsequent dust removal operation of the dust collector 4. At this time, the activated carbon will fall on the top of the movable block 25, and through the setting of the guide groove 26, the activated carbon will accumulate on the right side of the storage box 2. The staff starts the second motor 32 and the spray pump 5. At this time, the operation of the second motor 32 will drive the vibration rod 31 to rotate, and the rotation of the vibration rod 31 will continuously lift the movable block 25 upward. When it is lifted to the highest point, the movable block 25 uses its own gravity and the elastic potential energy of the spring 30. The movable block 25 is reset downward along the limiting cylinder 28 through the fixed block 29 to ensure that the movable block 25 and the vibration rod 31 are always in contact with each other. Further rotation of the vibration rod 31 will cause the movable block 25 to vibrate, thereby ensuring that when the spray pump 5 extracts the activated carbon inside the storage box 2 through the connecting pipe 27, the activated carbon will not be deposited, ensuring continuous feeding. When performing the demercuration operation, the flue gas will enter from the air inlet 6, and the activated carbon will be sprayed out from the spray pipe 9. The flue gas will carry the activated carbon powder through the spiral bin 7. The spiral setting of the spiral bin 7 prolongs the contact time between the flue gas and the activated carbon, ensuring that the activated carbon thoroughly adsorbs the flue gas. Then, after the flue gas moves to the middle of the spiral bin 7, it will be blown into the interior of the dust collector 4 through the air outlet pipe 8. The dust collector 4 will adsorb and filter the impurity particles and activated carbon particles in the flue gas, thereby completing the demercuration purification of the flue gas.

[0039] When the flue gas enters the spiral bin 7 through the air inlet 6, the transmission blade 10 will be blown and rotated, and further the two sets of pulleys 12 will rotate synchronously through the synchronous belt 13, the pulley 12 will drive the transmission rod 14 to rotate, and further the rotating head 15 will move inside the transmission frame 18, and perform circular motion with the pulley 12 as the center. At this time, the rack 17 moves forward and backward along the limit plate 16, causing the gear 19 to rotate slightly forward and backward, and further the spray pipe 9 rotates to spray the activated carbon, ensuring that the activated carbon is evenly and thoroughly distributed.

[0040] Through the setting of the transmission blade 10, the force generated by the flue gas flow will drive the transmission blade 10 to rotate, and further the two sets of pulleys 12 rotate synchronously, and drive the rack 17 to move forward and backward, so that the spray pipe swings left and right. Compared with the traditional device, this device can not only make the distribution of activated carbon in the flue gas more uniform through the rotation of the spray pipe 9, but also through the design of the spiral bin 7 inside the adsorption box 3, the contact time between the flue gas and the activated carbon is prolonged, ensuring that the activated carbon can thoroughly adsorb the mercury in the flue gas, ensuring the evolution efficiency of the flue gas, and more importantly, saving energy consumption, which is more environmentally friendly.

[0041] Among them, a feed port 20 is opened on the top of the storage box 2, two groups of crushing rollers 21 are rotatably installed inside the storage box 2, a shell 22 is fixedly installed on the left side wall of the storage box 2, and two groups of gears 23 are rotatably installed inside the shell 22. The two groups of gears 23 are meshed with each other, and one end of the two groups of gears 23 penetrates into the interior of the storage box 2 and is fixedly connected to the crushing rollers 21. A first motor 24 is fixedly installed on the outer wall of the shell 22, and the output shaft of the first motor 24 is fixedly connected to one of the groups of gears 23.

[0042] The staff starts the first motor 24 and puts the activated carbon particles into the feed port 20. At this time, the first motor 24 drives the gear 23 to rotate, and the two sets of gears 23 are meshed with each other, so that the two sets of crushing rollers 21 rotate synchronously to crush the activated carbon particles to ensure consistent particle size and avoid excessively large particles from burdening the subsequent dust removal operation of the dust collector 4.

[0043] The operation of the first motor 24 causes the two sets of meshing gears 23 to rotate, and the crushing roller 21 starts to rotate to crush the activated carbon particles, ensuring that the activated carbon can flow with the flue gas. Compared with the traditional device, the device crushes the activated carbon through the crushing roller 21 before the activated carbon injection operation, which not only ensures the full contact and uniform distribution of the activated carbon and the flue gas, but also ensures the consistency of the particle size, avoids excessively large particles from causing a burden on the subsequent dust removal operation of the dust collector 4, and improves the efficiency of mercury removal and purification.

[0044] Among them, the four corners of the bottom of the inner wall of the material storage box 2 are fixedly installed with limiting cylinders 28, and the interior of the limiting cylinders 28 is movably installed with fixed blocks 29. The tops of the four groups of fixed blocks 29 are fixedly installed with movable blocks 25. A vibration rod 31 is rotatably installed between the bottom of the movable block 25 and the material storage box 2. The outer wall of the vibration rod 31 and the movable block 25 abut against each other. A second motor 32 is fixedly installed on the outer wall of the material storage box 2, and the output shaft of the second motor 32 is fixedly connected to the vibration rod 31.

[0045] The activated carbon will fall on the top of the movable block 25, and through the setting of the guide groove 26, the activated carbon will be accumulated on the right side inside the storage box 2. The staff starts the second motor 32 and the spray pump 5. At this time, the operation of the second motor 32 will drive the vibration rod 31 to rotate. The rotation of the vibration rod 31 will continuously lift the movable block 25 upward. When it is lifted to the highest point, the movable block 25 uses its own gravity and the elastic potential energy of the spring 30 to reset the movable block 25 downward along the limit tube 28 through the fixed block 29, ensuring that the movable block 25 and the vibration rod 31 are always in contact with each other. Further rotation of the vibration rod 31 will cause the movable block 25 to vibrate, thereby ensuring that when the spray pump 5 extracts the activated carbon inside the storage box 2 through the connecting pipe 27, the activated carbon will not be deposited.

[0046] When the second motor 32 is operated, the vibration rod 31 rotates, and the rotation of the vibration rod 31 will continuously lift and lower the movable block 25, thereby realizing the vibration of the movable block 25. Compared with the traditional device, the device can continuously transport the activated carbon to the connecting pipe 27 through the vibration of the movable block 25, thereby preventing the deposition of the activated carbon and causing uneven feeding, ensuring that the injection pipe 9 can continuously spray the activated carbon, avoiding the problem of uneven demercuration of flue gas, and improving the demercuration quality.

[0047] One end of the transmission rod 14 is fixedly connected to the center of the pulley 12 , and the other end of the transmission rod 14 is fixedly connected to the rotating head 15 , and the rotating head 15 is movably arranged inside the transmission frame 18 .

[0048] Since the transmission rod 14 has a certain length, when the pulley 12 rotates, the other end of the transmission rod 14 will move eccentrically with the center of the pulley 12 as the midpoint.

[0049] Among them, a gear 19 is rotatably installed on the outer wall of the adsorption box 3, one end of the gear 19 penetrates into the interior of the adsorption box 3 and is fixedly connected to the spray pipe 9, and the gear 19 and the rack 17 are meshed with each other.

[0050] When the pulley 12 rotates, the rack 17 will move forward and backward, and the rack 17 and the gear 19 will mesh with each other, causing the gear 19 to rotate forward and backward.

[0051] Among them, one end of the air outlet pipe 8 is connected to the middle part of the spiral bin 7, and the other end of the air outlet pipe 8 is connected to the dust collector 4, and the dust collector 4 is used to absorb particulate matter in the coal-fired flue gas.

[0052] The dust collector 4 is a commonly used device in flue gas purification and is a prior art.

[0053] Among them, guide plates 33 are fixedly installed on the front and rear sides of the storage box 2. The guide plates 33 are located on the front and rear sides of the two groups of crushing rollers 21 to prevent the activated carbon from splashing.

[0054] The fixed block 29 and the bottom inner wall of the material storage box 2 are elastically connected via a spring 30 , the top of the movable block 25 is inclined, and a guide groove 26 is provided on the top of the movable block 25 .

[0055] By the inclined setting of the guide groove 26 , the activated carbon will be guided to the connecting pipe 27 .

[0056] It should be noted that the working principle and use process of the injection mechanism for removing mercury from coal-fired flue gas with activated carbon are as follows:

[0057] When activated carbon is needed to remove mercury from coal-fired flue gas, the staff first starts the first motor 24 and puts the activated carbon particles into the feed port 20. At this time, the first motor 24 drives the gear 23 to rotate, and the two sets of gears 23 mesh with each other, so that the two sets of crushing rollers 21 rotate synchronously to crush the activated carbon particles to ensure consistent particle size and avoid excessively large particles from burdening the subsequent dust removal operation of the dust collector 4. At this time, the activated carbon will fall on the top of the movable block 25, and through the setting of the guide groove 26, the activated carbon will accumulate on the right side of the storage box 2. The staff starts the second motor 32 and the spray pump 5. At this time, the operation of the second motor 32 will drive the vibration rod 31 to rotate, and the rotation of the vibration rod 31 will continuously lift the movable block 25 upward. When it is lifted to the highest point, the movable block 25 uses its own gravity and the elastic potential energy of the spring 30. The movable block 25 is reset downward along the limiting cylinder 28 through the fixed block 29 to ensure that the movable block 25 and the vibration rod 31 are always in contact with each other. Further rotation of the vibration rod 31 will cause the movable block 25 to vibrate, thereby ensuring that when the spray pump 5 extracts the activated carbon inside the storage box 2 through the connecting pipe 27, the activated carbon will not be deposited, ensuring continuous feeding. When performing the demercuration operation, the flue gas will enter from the air inlet 6, and the activated carbon will be sprayed out from the spray pipe 9. The flue gas will carry the activated carbon powder through the spiral bin 7. The spiral setting of the spiral bin 7 prolongs the contact time between the flue gas and the activated carbon, ensuring that the activated carbon thoroughly adsorbs the flue gas. Then, after the flue gas moves to the middle of the spiral bin 7, it will be blown into the interior of the dust collector 4 through the air outlet pipe 8. The dust collector 4 will adsorb and filter the impurity particles and activated carbon particles in the flue gas, thereby completing the demercuration purification of the flue gas.

[0058] When the flue gas enters the spiral bin 7 through the air inlet 6, the transmission blade 10 will be blown and rotated, and further the two sets of pulleys 12 will rotate synchronously through the synchronous belt 13, the pulley 12 will drive the transmission rod 14 to rotate, and further the rotating head 15 will move inside the transmission frame 18, and perform circular motion with the pulley 12 as the center. At this time, the rack 17 moves forward and backward along the limit plate 16, causing the gear 19 to rotate slightly forward and backward, and further the spray pipe 9 rotates to spray the activated carbon, ensuring that the activated carbon is evenly and thoroughly distributed.

[0059] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon, characterized in that: It includes a base plate, a material storage box, an adsorption box and a dust collector. The top of the base plate is fixedly installed with the material storage box, the adsorption box and the dust collector. The top of the adsorption box is provided with an air inlet. The left side of the adsorption box is fixedly installed with a spray pump. The material storage box and the spray pump are connected through a connecting pipe. A spiral bin is fixedly opened inside the adsorption box. An air outlet pipe is fixedly installed on the right side of the adsorption box. A spray pipe is rotatably installed inside the air inlet, a transmission blade is rotatably installed on the side of the spray pipe, a protective shell is fixedly installed on the right side of the adsorption box, two sets of pulleys are rotatably installed inside the protective shell, the two sets of pulleys are connected by synchronous belt transmission, one set of pulleys is fixedly connected to the transmission blade, and a transmission rod is fixedly installed on one end of the other set of pulleys, a limit plate is fixedly installed inside the protective shell, a rack is movably installed on one end of the limit plate, a transmission frame is fixedly installed on the middle part of the outer wall of the rack, a rotating head is movably installed inside the transmission frame, and one end of the rotating head is fixedly connected to the transmission rod.

2. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 1, characterized in that: A feeding port is provided on the top of the material storage box, and two groups of crushing rollers are rotatably installed inside the material storage box. A shell is fixedly installed on the left side wall of the material storage box, and two groups of gears 2 are rotatably installed inside the shell. The two groups of gears 2 are meshed with each other, and one end of the two groups of gears 2 penetrates into the interior of the material storage box and is fixedly connected to the crushing rollers. A first motor is fixedly installed on the outer wall of the shell, and the output shaft of the first motor is fixedly connected to one of the groups of gears 2.

3. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 1, characterized in that: Limiting cylinders are fixedly installed at the four corners of the bottom of the inner wall of the material storage box, and fixed blocks are movably installed inside the limiting cylinders. Movable blocks are fixedly installed on the tops of the four groups of fixed blocks, and a vibration rod is rotatably installed between the bottom of the movable block and the material storage box, and the outer wall of the vibration rod and the movable block abut against each other. A second motor is fixedly installed on the outer wall of the material storage box, and the output shaft of the second motor is fixedly connected to the vibration rod.

4. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 1, characterized in that: One end of the transmission rod is fixedly connected to the center of the belt wheel, and the other end of the transmission rod is fixedly connected to the rotating head, and the rotating head is movably arranged inside the transmission frame.

5. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 1, characterized in that: A gear 1 is rotatably mounted on the outer wall of the adsorption box, one end of the gear 1 penetrates into the interior of the adsorption box and is fixedly connected to the spray pipe, and the gear 1 and the rack are meshed with each other.

6. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 1, characterized in that: One end of the air outlet pipe is connected to the middle part of the spiral bin, and the other end of the air outlet pipe is connected to the dust collector, and the dust collector is used to absorb particulate matter in the coal-fired flue gas.

7. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 2, characterized in that: Guide plates are fixedly installed on both the front and rear sides of the storage box. The guide plates are located on the front and rear sides of the two groups of crushing rollers to prevent the activated carbon from splashing.

8. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 3, characterized in that: The fixing block and the bottom inner wall of the material storage box are elastically connected via a spring.

9. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 8, characterized in that: The top of the movable block is arranged in an inclined manner.

10. The injection mechanism for removing mercury from coal-fired flue gas by injection of activated carbon according to claim 3, characterized in that: A guide groove is arranged on the top of the movable block.

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