A thermal control boiler tail gas treatment device for power plant and treatment method thereof

Abstract

The present invention discloses a thermal control boiler tail gas treatment device for power plants and a treatment method thereof, wherein the treatment device comprises a pre-treatment chamber; a filter plate assembly is arranged inside the pre-treatment chamber; the filter plate assembly comprises a filter plate, an elastic plate, a fixed block and a protrusion; a slide groove is provided on the front wall or rear wall of the pre-treatment chamber; at least two filter plates are arranged to slide longitudinally inside the pre-treatment chamber; the front end or rear end of the filter plate is penetrated and extends out of the slide groove; the left end or right end of the filter plate abuts against a plurality of protrusions; the outer ends of the plurality of protrusions are fixedly connected to the inner ends of the elastic plates, and the elastic plates are in a compressed state; the outer ends of the elastic plates are fixedly connected to the inner ends of the fixed blocks; the fixed blocks are fixedly mounted on the inner wall of the pre-treatment chamber. The present invention provides a thermal control boiler tail gas treatment device for power plants and a treatment method thereof, wherein the operator can take out the two filter plates from the treatment device by a handle for cleaning, so as to prevent affecting the efficiency of the equipment in treating tail gas.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas treatment, and in particular to a tail gas treatment device for a thermal control boiler in a power plant and a treatment method thereof. Background Art

[0002] A power plant is a power plant that converts some form of raw energy into electrical energy for fixed facilities or transportation, such as thermal, hydroelectric, steam, diesel or nuclear power plants. Thermal power generation is the use of thermal energy obtained from burning fuels (coal, petroleum and its products, natural gas, etc.) to generate electricity. There are two main forms of thermal power generating sets: using boilers to generate high-temperature and high-pressure steam to drive the steam turbine to rotate and drive the generator to generate electricity, which is called a steam turbine generator set; fuel enters the gas turbine to directly convert thermal energy into mechanical energy to drive the generator to generate electricity, which is called a gas turbine generator set. Thermal power plants usually refer to power plants that are mainly based on steam turbine generator sets; hydroelectric power generation is to divert high-altitude river water, lake water, or river water to the downstream through diversion to form a drop in height to drive the turbine to rotate and drive the generator to generate electricity. A power plant that generates electricity with a turbine generator set is called a hydroelectric power plant, and a thermal control boiler is one of the equipment used in power plants.

[0003] In the invention with the publication number CN212481354U, a thermal control boiler tail gas treatment device for power plants is disclosed, which relates to the technical field of related equipment for power plants. The present invention includes a main water storage tank, a slider is slidably connected to the middle of both sides of the main water storage tank through a slide rail, a slave water storage tank is fixedly connected to the middle of the inner side of the slider, a main heat pipe is equidistantly connected to the middle of one side of the slave water storage tank, the inner end of the main heat pipe extends into the middle of the slave heat pipe equidistantly arranged in the middle of the main water storage tank, a smoke inlet pipe is connected from the middle of the outer side of the heat pipe through the main water storage tank, the outer surface of the smoke inlet pipe is coated with a polyurethane insulation layer and a glass fiber layer in sequence, and a filter screen, a high-efficiency air filter layer and a microporous ceramic filter layer are equidistantly connected to one side of the smoke inlet pipe. The invention has the advantages of energy saving, environmental protection and convenient use by arranging a polyurethane insulation layer, a glass fiber layer, a guide plate, a filter screen, a high-efficiency air filter layer, a microporous ceramic filter layer, a main heat pipe and a slave heat pipe structure. However, in this structure, there is a lack of an exhaust gas small particle cleaning device inside the exhaust gas treatment device. After long-term use, the internal filter screen will be clogged, affecting the efficiency of the equipment in treating exhaust gas. Summary of the invention

[0004] In view of this, the present invention proposes a thermal control boiler tail gas treatment device for a power plant and a treatment method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A thermal control boiler tail gas treatment device for a power plant, comprising a pre-treatment chamber; an air inlet is provided at one side end of the pre-treatment chamber, and an outlet is provided at the other side end of the pre-treatment chamber; a filter plate assembly is provided inside the pre-treatment chamber; the filter plate assembly comprises a filter plate, an elastic plate, a fixing block and a protrusion; a slide groove is provided on the front wall or the rear wall of the pre-treatment chamber; at least two filter plates are longitudinally slidably provided inside the pre-treatment chamber; the front end or the rear end of the filter plate is penetrated by the slide groove and extends out of the slide groove; the left and right ends of the filter plate are both in contact with a number of the protrusions; the outer ends of a number of the protrusions are fixedly connected to the inner end of the elastic plate, and the elastic plate is in a compressed state; the outer end of the elastic plate is fixedly connected to the inner end of the fixing block; the fixing block is fixedly mounted on the inner wall of the pre-treatment chamber;

[0007] It also includes an outer partition plate, a first inner partition plate, a second inner partition plate and a third inner partition plate; the outer partition plate is a hollow structure;

[0008] The outer partition plate includes a first longitudinal partition plate, a second longitudinal partition plate, a third longitudinal partition plate, a first transverse partition plate, a second transverse partition plate and a third transverse partition plate; the upper ends of the first longitudinal partition plate, the second longitudinal partition plate and the third longitudinal partition plate are fixedly connected to the inner upper wall of the pre-processing bin, and the lower ends of the first longitudinal partition plate, the second longitudinal partition plate and the third longitudinal partition plate are fixedly connected to the inner lower wall of the pre-processing bin; the first transverse partition plate is fixedly installed between the first longitudinal partition plate and the second longitudinal partition plate; the second transverse partition plate is fixedly installed between the second longitudinal partition plate and the third longitudinal partition plate; the third transverse partition plate is fixedly installed on the other side end of the third longitudinal partition plate;

[0009] The upper end and lower end of the first transverse partition plate are respectively the first ventilation space and the first filter space; the upper end and lower end of the second transverse partition plate are respectively the second ventilation space and the third ventilation space which are interconnected; the upper end and lower end of the third transverse partition plate are respectively the fourth ventilation space and the second filter space;

[0010] The front wall or rear wall of the pre-processing chamber is provided with a first through slot; the first longitudinal partition plate, the second longitudinal partition plate, and the third longitudinal partition plate are respectively slidably provided with a first inner partition plate, a second inner partition plate, and a third inner partition plate; the front end or rear end of the first inner partition plate, the second inner partition plate, and the third inner partition plate is penetrated and extends out of the first through slot;

[0011] The first ventilation groove, the second ventilation groove and the third ventilation groove are respectively formed at the rear ends of the first longitudinal partition plate, the second longitudinal partition plate and the third longitudinal partition plate; the positions of the first ventilation groove, the second ventilation groove and the third ventilation groove correspond to the positions of the first ventilation space, the second ventilation space and the fourth ventilation space respectively; the first filter groove, the second filter groove and the third filter groove are respectively formed at the front ends of the first longitudinal partition plate, the second longitudinal partition plate and the third longitudinal partition plate; the positions of the first filter groove, the second filter groove and the third filter groove correspond to the positions of the first filter space, the third ventilation space and the second filter space respectively;

[0012] The first inner partition plate, the second inner partition plate and the third inner partition plate are respectively provided with a first plate slot, a second plate slot and a third plate slot which are mutually interpenetrating with the first filter slot, the second filter slot and the third filter slot;

[0013] A filter plate assembly is arranged in the first filter space; another filter plate assembly is arranged in the second filter space.

[0014] Furthermore, the filter plate is slidably disposed in the first filter space or the second filter space, and the upper end and the lower end of the filter plate are in contact with the inner upper wall and the inner lower wall of the first filter space or the second filter space respectively;

[0015] The front end, middle end and rear end of each filter plate are respectively provided with elastic plates; the outer ends of the three elastic plates are fixedly connected to the fixing blocks; and the inner ends of the three elastic plates are respectively provided with a plurality of protrusions longitudinally.

[0016] Furthermore, the fixed block includes a longitudinal block and an injection block; the injection blocks are respectively arranged on the inner side of the upper end and the inner side of the lower end of the longitudinal block; the injection block at the upper end is arranged downwardly from the outer side to the inner side; the injection block at the lower end is arranged upwardly from the outer side to the inner side;

[0017] The fixing block is a hollow structure;

[0018] The longitudinal block and the filter plate have a plurality of water holes on their opposite end surfaces; the injection block and the filter plate have a plurality of water holes on their opposite end surfaces;

[0019] A water tank is provided at the bottom of the first filter space and the second filter space; a certain distance is provided between all longitudinal blocks and the bottom wall of the water tank;

[0020] All longitudinal blocks are connected to the water inlet pipe, which passes through and extends out of the pre-treatment chamber; the bottom of the water tank is connected to the water outlet pipe; the water outlet pipe passes through and extends out of the pre-treatment chamber; valves and water pumps are installed on the water inlet pipe; and valves are installed on the water outlet pipe.

[0021] Furthermore, a slider assembly is provided at the left upper end, the left lower end, the right upper end, and the right lower end of the filter plate respectively;

[0022] The slider assembly includes an inner slider, an outer slider and a middle slider;

[0023] The front end and the rear end of the inner slider or the outer slider are fixedly connected to the inner front wall and the inner rear wall of the first filter space respectively; the inner slider or the outer slider does not contact the elastic plate;

[0024] The filter plate is slidably arranged between the inner slider at the left end and the inner slider at the right end;

[0025] A second through slot is provided on the front wall or the rear wall of the pre-processing chamber; the middle slide is embedded between the inner slide and the outer slide; the front end or the rear end of the middle slide at the upper end and / or the lower end is penetrated and extends out of the second through slot;

[0026] The middle slide plate is in an "I" shape; the length of a horizontal portion of the middle slide plate away from the elastic plate is not less than the outer diameter of the protrusion; the length of another horizontal portion of the middle slide plate close to the elastic plate is less than the outer diameter of the protrusion.

[0027] Furthermore, a heat-insulating filter assembly is provided inside the pre-processing chamber;

[0028] The heat-insulating filter assembly is located between the air inlet and the filter plate assembly;

[0029] The heat-insulating filter assembly comprises a heat-insulating layer, a first filter layer and a second filter layer which are sequentially arranged along the outlet direction.

[0030] Furthermore, the first filter layer is a ceramic filter layer.

[0031] Furthermore, the second filter layer is an activated carbon filter layer.

[0032] Furthermore, the other side of the pre-processing chamber is connected to the post-processing chamber; the other side of the post-processing chamber is provided with an air outlet;

[0033] A water pipe is fixedly installed on the upper end of the post-processing bin;

[0034] The upper end of the water pipe is fixedly connected to the upper water tank; the lower end of the water pipe is fixedly connected to the nozzle inside the post-processing tank;

[0035] The upper end of the upper water tank is fixedly connected to the return pipe; the other end of the return pipe is fixedly connected to the inner lower end of the post-processing tank;

[0036] A water pump is installed on the water pipe; and a water pump is installed on the water return pipe.

[0037] The present invention also provides a treatment method for a thermal control boiler tail gas treatment device for a power plant, comprising the following steps:

[0038] S1: Thermal insulation filtration treatment

[0039] The tail gas of the thermal control boiler enters the pre-treatment chamber, passes through the heat insulation layer for cooling treatment, passes through the ceramic filter layer for tail gas filtration treatment, and passes through the activated carbon filter layer for tail gas filtration treatment;

[0040] S2: Filtration and filter replacement

[0041] In the initial state, the exhaust gas passes through the first filter space and the second filter space in sequence, and the exhaust gas passes through the two filter plates in sequence, and the particles in the exhaust gas are blocked by the two filter plates and stay on their surfaces and fall into the water tank;

[0042] When the filter plate on the right side needs to be replaced, the third inner partition plate is pulled out a certain distance, the third ventilation groove on the third longitudinal partition plate is no longer blocked by the third inner partition plate, and the third filter groove on the third longitudinal partition plate is completely blocked by the third inner partition plate; the exhaust gas passes through the first filter space, the third ventilation space, the second ventilation space, and the fourth ventilation space in sequence, and the exhaust gas is filtered by the filter plate on the left side, and the particles in the exhaust gas are blocked by the filter plate on the left side and stay on its surface and fall into the water tank; at the same time, the filter plate on the right side is pulled out, and during the pulling-out process, the filter plate on the right side and the protrusions on the three elastic plates on both sides thereof contact and rub against each other, and the particles on the filter plate on the right side are shaken off under the action of friction and fall into the water tank; water is passed through the fixed blocks on both sides of the filter plate on the right side, and the water sprayed from the water holes cleans the particles on the filter plate on the right side, and the particles on the filter plate on the right side further fall into the water tank; the sewage in the water tank is discharged from the outlet pipe;

[0043] When the filter plate on the left side needs to be replaced, the first inner partition plate and the second inner partition plate are pulled out a certain distance, and the first ventilation groove and the second ventilation groove on the first longitudinal partition plate and the second longitudinal partition plate are no longer blocked by the first inner partition plate and the second inner partition plate, and the first filter groove and the second filter groove on the first longitudinal partition plate and the second longitudinal partition plate are completely blocked by the first inner partition plate and the second inner partition plate; the exhaust gas passes through the first ventilation space, the second ventilation space, the third ventilation space, and the second filter space in turn, and the exhaust gas is filtered through the filter plate on the right side, and the particles in the exhaust gas are removed. The particles are blocked by the filter plate on the right side and stay on its surface, and fall into the water tank; at the same time, the filter plate on the left side is pulled out, and during the pulling out process, the filter plate on the left side and the projections on the three elastic plates on both sides thereof contact and rub against each other, and the particles on the filter plate on the left side are shaken off by the friction force and fall into the water tank; water flows through the fixed blocks on both sides of the filter plate on the left side, and the water sprayed from the water holes cleans the particles on the filter plate on the left side, and the particles on the filter plate on the left side further fall into the water tank; the sewage in the water tank is discharged from the outlet pipe;

[0044] S3: Spray treatment

[0045] The tail gas enters the post-processing chamber from the pre-processing chamber, and the cleaning water is sprayed out from the nozzle through the water pipe to spray the tail gas, and the treated tail gas is discharged.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] (1) A filter plate assembly is provided inside the pre-treatment chamber. After the equipment is used for a long time, a large amount of dust and particulate matter will accumulate on the filter plate. The operator can use the handle to take out the two filter plates from the treatment device for cleaning to prevent affecting the exhaust gas treatment efficiency of the equipment; when the left filter plate is taken out and cleaned, the right filter plate still filters the dust and particulate matter in the exhaust gas as usual; when the right filter plate is taken out and cleaned, the left filter plate still filters the dust and particulate matter in the exhaust gas as usual;

[0048] (2) A cooling structure and two filtering devices are installed inside the pre-treatment chamber to perform preliminary filtering operations on the exhaust gas, which facilitates the filter plate assembly to perform exhaust gas particulate filtering operations; a water spraying device is set inside the post-treatment chamber, and the internal exhaust gas is sprayed by a nozzle to improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A three-dimensional diagram of a thermal control boiler tail gas treatment device for a power plant provided by an embodiment of the present invention;

[0050] Figure 2 for Figure 1 Another angle structural diagram;

[0051] Figure 3 A top view of a thermal control boiler tail gas treatment device for a power plant provided by an embodiment of the present invention;

[0052] Figure 4 for Figure 3 AA section view in the figure;

[0053] Figure 5 for Figure 4 A in the enlarged view;

[0054] Figure 6 for Figure 5 The enlarged view of point B in the figure;

[0055] Figure 7 A front view of a thermal control boiler tail gas treatment device for a power plant provided by an embodiment of the present invention;

[0056] Figure 8 for Figure 3 BB section view in the figure;

[0057] Fig. 9 A three-dimensional diagram of a partition plate assembly provided by an embodiment of the present invention;

[0058] Fig.10 An exploded schematic diagram of a partition plate assembly provided in an embodiment of the present invention;

[0059] Fig.11 A three-dimensional diagram of a filter plate assembly provided in an embodiment of the present invention;

[0060] Fig.12 for Fig.11 The enlarged view of point C in the figure;

[0061] Fig.13 An exploded schematic diagram of a filter plate assembly provided in an embodiment of the present invention.

[0062] In the figure: 1. pre-treatment chamber; 2. post-treatment chamber; 3. air inlet; 4. air inlet fixing ring; 5. air inlet fixing block; 6. fan; 7. middle slide plate; 8. internal ventilation block; 9. ventilation net; 10. air outlet; 11. water pipe; 12. upper water tank; 13. nozzle; 14. return pipe; 15. insulation layer; 16. ceramic filter layer; 17. activated carbon filter layer; 18. outer partition; 181. first longitudinal partition; 182. second longitudinal partition; 183. third longitudinal partition; 184. first transverse partition; 185. second transverse partition; 186. third transverse partition; 19. first ventilation space; 20. first filter space; 21 , the second ventilation space; 22, the third ventilation space; 23, the fourth ventilation space; 24, the second filter space; 25, the first inner partition plate; 26, the second inner partition plate; 27, the third inner partition plate; 28, the first ventilation groove; 29, the second ventilation groove; 30, the third ventilation groove; 31, the first filter groove; 32, the second filter groove; 33, the third filter groove; 34, the first plate groove; 35, the second plate groove; 36, the third plate groove; 37, the filter plate; 38, the elastic plate; 39, the fixed block; 391, the longitudinal block; 392, the injection block; 40, the protrusion; 41, the water hole; 42, the water tank; 43, the water inlet pipe; 44, the water outlet pipe; 45, the inner slider; 46, the outer slider. DETAILED DESCRIPTION

[0063] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0064] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] Example:

[0067] like Figure 1-13 As shown, a thermal control boiler tail gas treatment device for a power plant includes a pre-treatment chamber 1 and a post-treatment chamber 2. The other side of the pre-treatment chamber 1 is connected to the post-treatment chamber 2.

[0068] An air inlet 3 is provided at one side end of the pre-processing chamber 1 .

[0069] An air inlet fixing ring 4 is fixedly connected to the outer edge of the tail of the air inlet 3, and an air inlet fixing block 5 is fixedly connected to the tail of the air inlet 3 at the rear position of the air inlet fixing ring 4. The air inlet 3 is fixed by the air inlet fixing ring 4. At the same time, screw holes are opened on the surface of the air inlet fixing ring 4, and the air inlet fixing block 5 and the pre-treatment chamber 1 are fixed by screws, and the rear surface of the air inlet 3 is sealed by the air inlet fixing block 5 to prevent exhaust gas leakage. The air inlet 3 is connected to the boiler exhaust gas inlet pipe, and an air pump is installed on the boiler exhaust gas inlet pipe.

[0070] A fan 6 is fixedly connected to the wall of the pre-treatment chamber 1 on the left and right sides of the air inlet 3, and a ventilation net 9 is installed inside the fan 6. The fan 6 is installed on the front surface of the pre-treatment chamber 1 of the equipment, which can speed up the speed at which the exhaust gas enters the treatment device and improve the equipment treatment efficiency.

[0071] An internal ventilation block 8 is welded to the inner left wall of the post-processing chamber 2, and a ventilation block ventilation net 9 is installed on the front surface of the internal ventilation block 8. The internal ventilation block 8 is set on the front end surface of the interior of the post-processing chamber 2 to input the exhaust gas filtered by the pre-processing chamber 1 into the post-processing chamber 2. At the same time, the internal ventilation block 8 is set to a small outlet shape to prevent the cleaning water sprayed from the upper nozzle 13 from entering the internal ventilation block 8.

[0072] The other side of the post-processing chamber 2 is provided with an air outlet 10. An air outlet 10 fixing ring is fixedly connected to the outer edge of the tail of the air outlet 10, and an air outlet 10 fixing block 39 is fixedly connected to the tail of the air outlet 10 at the rear position of the air outlet 10 fixing ring. The air outlet 10 is fixed by the air outlet 10 fixing ring, and screw holes are opened on the surface of the air outlet 10 fixing ring. The air outlet 10 fixing block 39 and the post-processing chamber 2 are fixed by screws, and the rear surface of the air outlet 10 is sealed by the air outlet 10 fixing block 39 to prevent exhaust gas leakage. An air outlet pipe can be connected at the position of the air outlet 10 to collect the treated exhaust gas to prevent the treated exhaust gas from leaking.

[0073] A water pipe 11 is fixedly installed at the upper end of the post-processing chamber 2. The upper end of the water pipe 11 is fixedly connected to the upper water tank 12. The upper water tank 12 contains water and can be filled with water. The lower end of the water pipe 11 is fixedly connected to the nozzle 13 inside the post-processing chamber 2. The nozzle 13 is designed to be small at the top and large at the bottom to increase the water spraying area and improve the treatment efficiency.

[0074] The upper end of the upper water tank 12 is fixedly connected to the return pipe 14; the other end of the return pipe 14 is fixedly connected to the lower end of the interior of the post-processing tank 2. A water pump is installed on the water pipe 11; and a water pump is installed on the return pipe 14.

[0075] A purifier can be installed on the return pipe 14. In the upper return pipe 14 of the post-processing bin 2, the internal cleaning water can be sucked into the upper water bin 12 after the purifier is applied, and used, thereby improving the utilization rate of the cleaning water and preventing the interruption of the cleaning water when spraying water.

[0076] A heat-insulating filter assembly is provided inside the pre-processing chamber 1. The heat-insulating filter assembly is located between the air inlet 3 and the filter plate assembly.

[0077] The heat-insulating filter assembly comprises a heat-insulating layer 15, a first filter layer and a second filter layer arranged in sequence along the outlet direction. The first filter layer is a ceramic filter layer 16. The second filter layer is an activated carbon filter layer 17.

[0078] A cooling structure and two filtering devices are installed inside the pre-treatment chamber 1 to perform preliminary filtering operations on the exhaust gas.

[0079] The outer partition plate 18 and the first inner partition plate 25, the second inner partition plate 26 and the third inner partition plate 27 constitute a partition plate assembly.

[0080] The outer partition plate 18 is a hollow structure.

[0081] The outer partition plate 18 includes a first longitudinal partition plate 181 , a second longitudinal partition plate 182 , a third longitudinal partition plate 183 , a first transverse partition plate 184 , a second transverse partition plate 185 , and a third transverse partition plate 186 .

[0082] The upper ends of the first longitudinal partition plate 181, the second longitudinal partition plate 182, and the third longitudinal partition plate 183 are all fixedly connected to the inner upper wall of the pre-processing chamber 1, and the lower ends of the first longitudinal partition plate 181, the second longitudinal partition plate 182, and the third longitudinal partition plate 183 are fixedly connected to the inner lower wall of the pre-processing chamber 1. The first transverse partition plate 184 is fixedly installed between the first longitudinal partition plate 181 and the second longitudinal partition plate 182; the second transverse partition plate 185 is fixedly installed between the second longitudinal partition plate 182 and the third longitudinal partition plate 183; and the third transverse partition plate 186 is fixedly installed at the other side end of the third longitudinal partition plate 183.

[0083] The upper end and the lower end of the first transverse partition plate 184 are the first ventilation space 19 and the first filter space 20 respectively; the upper end and the lower end of the second transverse partition plate 185 are the second ventilation space 21 and the third ventilation space 22 which are interconnected respectively; the upper end and the lower end of the third transverse partition plate 186 are the fourth ventilation space 23 and the second filter space 24 respectively.

[0084] A first through groove is provided on the front wall of the pre-processing chamber 1; a first inner partition plate 25, a second inner partition plate 26 and a third inner partition plate 27 are slidingly provided inside the first longitudinal partition plate 181, the second longitudinal partition plate 182 and the third longitudinal partition plate 183 respectively; the front ends of the first inner partition plate 25, the second inner partition plate 26 and the third inner partition plate 27 extend out of the first through groove.

[0085] The first longitudinal partition plate 181, the second longitudinal partition plate 182, and the third longitudinal partition plate 183 have the first ventilation groove 28, the second ventilation groove 29, and the third ventilation groove 30 respectively formed through the rear ends thereof; the positions of the first ventilation groove 28, the second ventilation groove 29, and the third ventilation groove 30 respectively correspond to the positions of the first ventilation space 19, the second ventilation space 21, and the fourth ventilation space 23. The first longitudinal partition plate 181, the second longitudinal partition plate 182, and the third longitudinal partition plate 183 have the first filter groove 31, the second filter groove 32, and the third filter groove 33 respectively formed through the front ends thereof; the positions of the first filter groove 31, the second filter groove 32, and the third filter groove 33 respectively correspond to the positions of the first filter space 20, the third ventilation space 22, and the second filter space 24.

[0086] The first inner partition plate 25 , the second inner partition plate 26 and the third inner partition plate 27 are respectively provided with a first plate slot 34 , a second plate slot 35 and a third plate slot 36 which are interpenetrating with the first filter slot 31 , the second filter slot 32 and the third filter slot 33 .

[0087] The first inner partition plate 25, the second inner partition plate 26 and the third inner partition plate 27 are provided with a limiting groove in the middle of the upper end. When the first inner partition plate 25, the second inner partition plate 26 and the third inner partition plate 27 slide out of the front processing chamber 1, they stop sliding when the limiting groove just completely slides out of the front processing chamber 1.

[0088] A filter plate assembly is disposed in the first filter space 20 ; another filter plate assembly is disposed in the second filter space 24 .

[0089] The filter plate assembly includes a filter plate 37, an elastic plate 38, a fixing block 39 and a protrusion 40. A slide groove is provided on the front wall of the pre-processing chamber 1; two filter plates 37 are longitudinally slidably provided inside the pre-processing chamber 1; and the front end of the filter plate 37 is provided with a slide groove extending out of the slide groove.

[0090] The filter plate 37 is slidably disposed in the first filter space 20 or the second filter space 24 , and the upper end of the filter plate 37 contacts the inner upper wall of the first filter space 20 or the second filter space 24 ; the lower end of the filter plate 37 contacts the inner bottom wall of the water tank 42 .

[0091] The front end, middle end and rear end of the left side of each filter plate 37 are respectively provided with elastic plates 38; the elastic plate 38 is an arc-shaped spring sheet. The arc-shaped opening end of the arc-shaped spring sheet faces outward. A plurality of protrusions 40 are welded from top to bottom in the middle of the arc-shaped spring end of the arc-shaped spring sheet, and the protrusions 40 are small spherical protrusions 40. The outer ends of the three spring sheets on the left are fixedly connected to the fixed block 39; the fixed block 39 is fixedly installed on the inner wall of the pre-processing chamber 1. The plurality of protrusions 40 on the three spring sheets on the left are in contact with the left side surface of the filter plate 37, and the three spring sheets on the left are in an elastically compressed state.

[0092] The front end, middle end and rear end of the right side of each filter plate 37 are respectively provided with elastic plates 38; the elastic plates 38 are arc-shaped spring sheets. The arc-shaped opening end of the arc-shaped spring sheet faces outward. A plurality of protrusions 40 are welded from top to bottom in the middle of the arc-shaped spring sheet end of the arc-shaped spring sheet, and the protrusions 40 are small spherical protrusions 40. The outer ends of the three spring sheets on the right are fixedly connected to the fixing blocks 39; the fixing blocks 39 are fixedly installed on the inner wall of the pre-processing chamber 1. The plurality of protrusions 40 on the three spring sheets on the right are in contact with the left side surface of the filter plate 37, and the three spring sheets on the left are in an elastically compressed state.

[0093] The projections 40 on all the spring sheets are arranged in a staggered manner in horizontal positions.

[0094] The fixed block 39 includes a longitudinal block 391 and an injection block 392. The injection blocks 392 are respectively arranged on the inner side of the upper end and the inner side of the lower end of the longitudinal block 391; the upper injection block 392 is arranged downwardly from the outer side to the inner side; the lower injection block 392 is arranged upwardly from the outer side to the inner side. The fixed block 39 is a hollow structure.

[0095] The front end surfaces of the two filter plates 37 extending out of the pre-processing chamber 1 are provided with handles; the front end surfaces of the first inner partition plate 25, the second inner partition plate 26 and the third inner partition plate 27 extending out of the pre-processing chamber 1 are provided with handles.

[0096] A plurality of water holes 41 are provided on the end surfaces opposite to the longitudinal block 391 and the filter plate 37 ; a plurality of water holes 41 are provided on the end surfaces opposite to the injection block 392 and the filter plate 37 .

[0097] A water tank 42 is provided at the bottom of the first filter space 20 and the second filter space 24 ; all the longitudinal blocks 391 are spaced a certain distance from the bottom wall of the water tank 42 .

[0098] All longitudinal blocks 391 are connected to the water inlet pipe 43 , which is passed through and extends out of the pre-treatment chamber 1 ; the bottom of the water tank 42 is connected to the water outlet pipe 44 ; the water outlet pipe 44 is passed through and extends out of the pre-treatment chamber 1 .

[0099] A valve and a water pump (the valve and the water pump are not shown in the figure) are installed on the water inlet pipe 43. A valve (the valve and the water pump are not shown in the figure) is installed on the water outlet pipe 44.

[0100] The left upper end, the left lower end, the right upper end and the right lower end of the filter plate 37 are respectively provided with slider assemblies; the slider assemblies include an inner slider 45, an outer slider 46 and a middle slider 7.

[0101] The front end and rear end of the inner slider 45 or the outer slider 46 are respectively fixedly connected to the inner front wall and the inner rear wall of the first filter space 20. The inner slider 45 or the outer slider 46 does not contact the elastic plate 38. A filter plate 37 is slidably provided between the left inner slider 45 and the right inner slider 45.

[0102] A second through slot is provided on the front wall of the pre-processing chamber 1; a middle slide plate 7 is embedded between the inner slide plate 45 and the outer slide plate 46. In this embodiment, the front end of the middle slide plate 7 at the lower end is penetrated and extends out of the second through slot. The middle slide plate 7 is in the shape of an "I". The length of a horizontal portion of the middle slide plate 7 away from the elastic plate 38 is not less than the outer diameter of the protrusion 40; the length of another horizontal portion of the middle slide plate 7 close to the elastic plate 38 is less than the outer diameter of the protrusion 40.

[0103] The present invention also provides a treatment method for a thermal control boiler tail gas treatment device for a power plant, comprising the following steps:

[0104] S1: Thermal insulation filtration treatment

[0105] The tail gas of the thermal control boiler enters the pre-treatment chamber 1, is cooled by the heat insulation layer 15, filtered by the ceramic filter layer 16, and filtered by the activated carbon filter layer 17.

[0106] S2: Filtration and filter replacement

[0107] In the initial state, the exhaust gas passes through the first filter space 20 and the second filter space 24 in sequence, and the exhaust gas passes through the two filter plates 37 in sequence. The particles in the exhaust gas are blocked by the two filter plates 37 and stay on their surfaces, and then fall into the water tank 42;

[0108] When the filter screen plate 37 on the right side needs to be replaced, the third inner partition plate 27 is pulled out a certain distance, the third ventilation slot 30 on the third longitudinal partition plate 183 is no longer blocked by the third inner partition plate 27, and the third filter slot 33 on the third longitudinal partition plate 183 is completely blocked by the third inner partition plate 27; the exhaust gas passes through the first filter space 20, the third ventilation space 22, the second ventilation space 21, and the fourth ventilation space 23 in sequence, and the exhaust gas is filtered by the left filter screen plate 37, and the particulate matter in the exhaust gas is blocked by the left filter screen plate 37 and stays on its surface, and falls into At the same time, the filter plate 37 on the right side is pulled out. During the pulling out process, the filter plate 37 on the right side and the projections 40 on the three elastic plates 38 on both sides thereof contact and rub against each other, and the particles on the filter plate 37 on the right side are shaken off by the friction force and fall into the water tank 42; water is passed through the fixing blocks 39 on both sides of the filter plate 37 on the right side, and the water sprayed from the water holes 41 cleans the particles on the filter plate 37 on the right side, and the particles on the filter plate 37 on the right side further fall into the water tank 42; the sewage in the water tank 42 is discharged from the outlet pipe 44;

[0109] When the filter screen plate 37 on the left side needs to be replaced, the first inner partition plate 25 and the second inner partition plate 26 are pulled out a certain distance, and the first ventilation groove 28 and the second ventilation groove 29 on the first longitudinal partition plate 181 and the second longitudinal partition plate 182 are no longer blocked by the first inner partition plate 25 and the second inner partition plate 26, and the first filter slot 31 and the second filter slot 32 on the first longitudinal partition plate 181 and the second longitudinal partition plate 182 are completely blocked by the first inner partition plate 25 and the second inner partition plate 26; the exhaust gas passes through the first ventilation space 19, the second ventilation space 21, the third ventilation space 22, and the second filter space 24 in turn, and the exhaust gas passes through the filter on the right side The mesh plate 37 filters, and the particles in the exhaust gas are blocked by the right filter plate 37 and stay on its surface and fall into the water tank 42; at the same time, the left filter plate 37 is pulled out. During the pulling out process, the left filter plate 37 and the protrusions 40 on the three elastic plates 38 on both sides thereof contact and rub against each other, and the particles on the left filter plate 37 are shaken off under the action of friction and fall into the water tank 42; water is passed through the fixed blocks 39 on both sides of the left filter plate 37, and the water sprayed from the water holes 41 cleans the particles on the left filter plate 37, and the particles on the left filter plate 37 further fall into the water tank 42; the sewage in the water tank 42 is discharged from the outlet pipe 44;

[0110] In the initial state, since the length of the other horizontal part of the middle slide plate 7 close to the elastic plate 38 is less than the outer diameter of the protrusion 40, the spring sheet will not contact the other horizontal part of the middle slide plate 7, and the spring sheet can be freely extended and retracted. When the right filter plate 37 is pulled out of the pre-processing chamber 1, or when the left filter plate 37 is pulled out of the pre-processing chamber 1, the lower middle slide plate 7 is pulled out, rotated 180° and then slid between the inner slider 45 and the outer slider 46. At this time, since the length of a horizontal part of the middle slide plate 7 is not less than the outer diameter of the protrusion 40, a horizontal part of the middle slide plate 7 will push open three spring sheets, so that the filter plate 37 can slide back into the pre-processing chamber 1 after cleaning is completed; after the filter plate 37 slides back into the pre-processing chamber 1 after cleaning is completed, the lower middle slide plate 7 is pulled out, rotated 180° and then slid between the inner slider 45 and the outer slider 46, and the lower middle slide plate 7 returns to the initial state.

[0111] S3: Spray treatment

[0112] The tail gas enters the post-treatment chamber 2 from the pre-treatment chamber 1, and the cleaning water is sprayed out from the nozzle 13 through the water pipe 11 to spray the tail gas, and the treated tail gas is discharged.

[0113] The spray water sprayed by the nozzle 13 combines with the smoke and the harmful gases soluble in water in the tail gas to remove the smoke and the harmful gases in the tail gas.

[0114] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thermal control boiler tail gas treatment device for a power plant, comprising a pre-treatment chamber (1); a gas inlet (3) is provided at one side end of the pre-treatment chamber (1), and an outlet is provided at the other side end of the pre-treatment chamber (1); characterized in that: A filter plate assembly is provided inside the pre-processing chamber (1); the filter plate assembly comprises a filter plate (37), an elastic plate (38), a fixing block (39) and a protrusion (40); a slide groove is provided on the front wall or the rear wall of the pre-processing chamber (1); at least two filter plates (37) are provided inside the pre-processing chamber (1) for longitudinal sliding; the front end or the rear end of the filter plate (37) is penetrated and extends out of the slide groove; the left end and the right end of the filter plate (37) are both in contact with a plurality of the protrusions (40); the outer ends of the plurality of the protrusions (40) are fixedly connected to the inner ends of the elastic plates (38), and the elastic plates (38) are in a compressed state; the outer end of the elastic plate (38) is fixedly connected to the inner end of the fixing block (39); the fixing block (39) is fixedly mounted on the inner wall of the pre-processing chamber (1); It also includes an outer partition plate (18), a first inner partition plate (25), a second inner partition plate (26) and a third inner partition plate (27); the outer partition plate (18) is a hollow structure; The outer partition plate (18) comprises a first longitudinal partition plate (181), a second longitudinal partition plate (182), a third longitudinal partition plate (183), a first transverse partition plate (184), a second transverse partition plate (185) and a third transverse partition plate (186); the upper ends of the first longitudinal partition plate (181), the second longitudinal partition plate (182) and the third longitudinal partition plate (183) are fixedly connected to the inner upper wall of the pre-processing chamber (1); the first longitudinal partition plate (181), the second longitudinal partition plate (182) and the third longitudinal partition plate (183) are fixedly connected to the inner upper wall of the pre-processing chamber (1); 2), the lower end of the third longitudinal partition plate (183) is fixedly connected to the inner lower wall of the pre-processing chamber (1); the first transverse partition plate (184) is fixedly installed between the first longitudinal partition plate (181) and the second longitudinal partition plate (182); the second transverse partition plate (185) is fixedly installed between the second longitudinal partition plate (182) and the third longitudinal partition plate (183); the third transverse partition plate (186) is fixedly installed at the other side end of the third longitudinal partition plate (183); The upper end and the lower end of the first transverse partition plate (184) are respectively the first ventilation space (19) and the first filtering space (20); the upper end and the lower end of the second transverse partition plate (185) are respectively the second ventilation space (21) and the third ventilation space (22) which are interconnected; the upper end and the lower end of the third transverse partition plate (186) are respectively the fourth ventilation space (23) and the second filtering space (24); A first through slot is provided on the front wall or the rear wall of the pre-processing chamber (1); a first inner partition plate (25), a second inner partition plate (26) and a third inner partition plate (27) are slidably provided inside the first longitudinal partition plate (181), the second longitudinal partition plate (182) and the third longitudinal partition plate (183) respectively; the front end or the rear end of the first inner partition plate (25), the second inner partition plate (26) and the third inner partition plate (27) are penetrated and extend out of the first through slot; The first longitudinal partition plate (181), the second longitudinal partition plate (182), and the third longitudinal partition plate (183) are respectively provided with a first ventilation groove (28), a second ventilation groove (29), and a third ventilation groove (30) at their rear ends; the positions of the first ventilation groove (28), the second ventilation groove (29), and the third ventilation groove (30) correspond to the positions of the first ventilation space (19), the second ventilation space (21), and the fourth ventilation space (23) respectively; the first longitudinal partition plate (181), the second longitudinal partition plate (182), and the third longitudinal partition plate (183) are respectively provided with a first filter groove (31), a second filter groove (32), and a third filter groove (33); the positions of the first filter groove (31), the second filter groove (32), and the third filter groove (33) correspond to the positions of the first filter space (20), the third ventilation space (22), and the second filter space (24) respectively; The first inner partition plate (25), the second inner partition plate (26) and the third inner partition plate (27) are respectively provided with a first plate groove (34), a second plate groove (35) and a third plate groove (36) which are mutually connected with the first filter groove (31), the second filter groove (32) and the third filter groove (33); A filter plate assembly is provided in the first filter space (20); and another filter plate assembly is provided in the second filter space (24).

2. A thermal control boiler tail gas treatment device for a power plant according to claim 1, characterized in that: The filter plate (37) is slidably disposed in the first filter space (20) or the second filter space (24), and the upper end and the lower end of the filter plate (37) are in contact with the inner upper wall and the inner lower wall of the first filter space (20) or the second filter space (24) respectively; Each filter plate (37) is provided with elastic plates (38) at the front end, the middle end and the rear end on both sides; the outer ends of the three elastic plates (38) are fixedly connected to the fixing blocks (39); and the inner ends of the three elastic plates (38) are respectively provided with a plurality of protrusions (40) in the longitudinal direction.

3. A thermal control boiler tail gas treatment device for a power plant according to claim 2, characterized in that: The fixed block (39) comprises a longitudinal block (391) and an injection block (392); the injection blocks (392) are respectively arranged on the inner side of the upper end and the inner side of the lower end of the longitudinal block (391); the injection block (392) at the upper end is arranged downwardly from the outer side to the inner side; the injection block (392) at the lower end is arranged upwardly from the outer side to the inner side; The fixing block (39) is a hollow structure; A plurality of water holes (41) are provided on the end surfaces opposite to the longitudinal block (391) and the filter plate (37); a plurality of water holes (41) are provided on the end surfaces opposite to the injection block (392) and the filter plate (37); A water tank (42) is provided at the bottom of the first filtering space (20) and the second filtering space (24); a certain distance is provided between all the longitudinal blocks (391) and the bottom wall of the water tank (42); All longitudinal blocks (391) are connected to a water inlet pipe (43), and the water inlet pipe (43) is passed through and extends out of the pre-treatment chamber (1); the bottom of the water tank (42) is connected to a water outlet pipe (44); the water outlet pipe (44) is passed through and extends out of the pre-treatment chamber (1); a valve and a water pump are installed on the water inlet pipe (43); and a valve is installed on the water outlet pipe (44).

4. A thermal control boiler tail gas treatment device for a power plant according to claim 3, characterized in that: The left upper end, the left lower end, the right upper end and the right lower end of the filter plate (37) are respectively provided with a slider assembly; The slider assembly comprises an inner slider (45), an outer slider (46) and a middle slider (7); The front end and the rear end of the inner sliding block (45) or the outer sliding block (46) are respectively fixedly connected to the inner front wall and the inner rear wall of the first filtering space (20); the inner sliding block (45) or the outer sliding block (46) does not contact the elastic plate (38); The filter plate (37) is slidably disposed between the inner slider (45) at the left end and the inner slider (45) at the right end; A second through slot is provided on the front wall or the rear wall of the pre-processing chamber (1); the middle slide plate (7) is embedded between the inner slide plate (45) and the outer slide plate (46); the front end or the rear end of the middle slide plate (7) at the upper end and / or the lower end is penetrated and extends out of the second through slot; The middle slide plate (7) is in the shape of an I-shaped plate; the length of a horizontal portion of the middle slide plate (7) in a direction away from the elastic plate (38) is not less than the outer diameter of the protrusion (40); the length of another horizontal portion of the middle slide plate (7) in a direction close to the elastic plate (38) is less than the outer diameter of the protrusion (40).

5. A thermal control boiler tail gas treatment device for a power plant according to claim 4, characterized in that: The interior of the pre-processing chamber (1) is provided with a heat-insulating filter assembly; The heat-insulating filter assembly is located between the air inlet (3) and the filter plate assembly; The heat-insulating filter assembly comprises a heat-insulating layer (15), a first filter layer and a second filter layer which are arranged in sequence along the outlet direction.

6. A thermal control boiler tail gas treatment device for a power plant according to claim 5, characterized in that: The first filter layer is a ceramic filter layer (16).

7. A thermal control boiler tail gas treatment device for a power plant according to claim 6, characterized in that: The second filter layer is an activated carbon filter layer (17).

8. A thermal control boiler tail gas treatment device for a power plant according to claim 7, characterized in that: The other side of the pre-processing chamber (1) is connected to the post-processing chamber (2); the other side of the post-processing chamber (2) is provided with an air outlet (10); A water pipe (11) is fixedly installed at the upper end of the post-processing chamber (2); The upper end of the water pipe (11) is fixedly connected to the upper water tank (12); the lower end of the water pipe (11) is fixedly connected to the nozzle (13) inside the post-processing tank (2); The upper end of the upper water tank (12) is fixedly connected to the return pipe (14); the other end of the return pipe (14) is fixedly connected to the inner lower end of the post-processing tank (2); A water pump is installed on the water pipe (11); and a water pump is installed on the water return pipe (14).

9. A method for treating tail gas from a thermal control boiler for a power plant, using the tail gas treatment device for a thermal control boiler for a power plant according to claim 8, characterized in that: The following steps are involved: S1: Thermal insulation filtration treatment The tail gas of the thermal control boiler enters the pre-treatment chamber (1), passes through the heat insulation layer (15) for cooling treatment, passes through the ceramic filter layer (16) for tail gas filtration treatment, and passes through the activated carbon filter layer (17) for tail gas filtration treatment; S2: Filtration and filter replacement In the initial state, the exhaust gas passes through the first filter space (20) and the second filter space (24) in sequence, and the exhaust gas passes through the two filter plates (37) in sequence, and the particles in the exhaust gas are blocked by the two filter plates (37) and stay on their surfaces and fall into the water tank (42); When the filter plate (37) on the right side needs to be replaced, the third inner partition plate (27) is pulled out a certain distance, and the third ventilation groove (30) on the third longitudinal partition plate (183) is no longer blocked by the third inner partition plate (27), and the third filter groove (33) on the third longitudinal partition plate (183) is completely blocked by the third inner partition plate (27); the exhaust gas passes through the first filter space (20), the third ventilation space (22), the second ventilation space (21), and the fourth ventilation space (23) in sequence, and the exhaust gas is filtered by the filter plate (37) on the left side, and the particulate matter in the exhaust gas is blocked by the filter plate (37) on the left side and stays on its surface, and falls into the water tank ( 42); at the same time, the filter plate (37) on the right side is pulled out. During the pulling out process, the filter plate (37) on the right side and the projections (40) on the three elastic plates (38) on both sides thereof contact and rub against each other, and the particles on the filter plate (37) on the right side are shaken off by the friction force and fall into the water tank (42); water flows through the fixed blocks (39) on both sides of the filter plate (37) on the right side, and the water sprayed from the water holes (41) cleans the particles on the filter plate (37) on the right side, and the particles on the filter plate (37) on the right side further fall into the water tank (42); the sewage in the water tank (42) is discharged from the outlet pipe (44); When the filter screen plate (37) on the left side needs to be replaced, the first inner partition plate (25) and the second inner partition plate (26) are pulled out a certain distance, and the first ventilation groove (28) and the second ventilation groove (29) on the first longitudinal partition plate (181) and the second longitudinal partition plate (182) are no longer blocked by the first inner partition plate (25) and the second inner partition plate (26), and the first filter groove (31) and the second filter groove (32) on the first longitudinal partition plate (181) and the second longitudinal partition plate (182) are completely blocked by the first inner partition plate (25) and the second inner partition plate (26); the exhaust gas passes through the first ventilation space (19), the second ventilation space (21), the third ventilation space (22), and the second filter space (24) in sequence, and the exhaust gas passes through the filter screen plate ( 37) is filtered, and the particles in the exhaust gas are blocked by the filter plate (37) on the right side and remain on its surface and fall into the water tank (42); at the same time, the filter plate (37) on the left side is pulled out. During the pulling out process, the filter plate (37) on the left side and the protrusions (40) on the three elastic plates (38) on both sides thereof contact and rub against each other, and the particles on the filter plate (37) on the left side are shaken off under the action of friction and fall into the water tank (42); water is passed through the fixed blocks (39) on both sides of the filter plate (37) on the left side, and the water sprayed from the water holes (41) cleans the particles on the filter plate (37) on the left side, and the particles on the filter plate (37) on the left side further fall into the water tank (42); the sewage in the water tank (42) is discharged from the outlet pipe (44); S3: Spray treatment The tail gas enters the post-treatment chamber (2) from the pre-treatment chamber (1), and the cleaning water is sprayed out from the nozzle (13) through the water pipe (11) to spray the tail gas, and the treated tail gas is discharged.

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