Coal pyrolysis phenol-containing wastewater treatment device coupled with CFB furnace

Abstract

The invention discloses a coal pyrolysis phenol-containing wastewater treatment device coupled with a CFB furnace, and relates to the technical field of phenol-containing wastewater treatment.The coal pyrolysis phenol-containing wastewater treatment device comprises a pyrolysis wastewater spraying device, and a sedimentation tank is arranged on the left side of the pyrolysis wastewater spraying device; a filtering mechanism is arranged between the settling pond and the medicament reaction kettle and is used for realizing that the wastewater settled in the settling pond does not take out settled impurities when flowing; the filtering mechanism comprises a filtering box unit; a cleaning unit; the driving unit is provided with the filter box unit, a connecting pipe is inserted into an insertion pipe to fix a filter plate on one side of a baffle ring, a water pump sucks settled wastewater in a settling pond into a filter box, and the wastewater is filtered by the filter plate, enters the connecting pipe and a water outlet pipe and flows into a medicament reaction kettle; therefore, secondary filtration of the wastewater is realized, and particles in the wastewater sucked into the filter tank from the sedimentation tank are prevented from flowing into the chemical reaction kettle.

Description

Technical Field

[0001] The present invention relates to the technical field of phenolic wastewater treatment, and specifically to a phenolic wastewater treatment device for coal pyrolysis coupled with a CFB furnace. Background Art

[0002] As a clean and efficient combustion device, a CFB furnace generates a large amount of hot flue gas during the combustion process. These hot flue gases are characterized by high temperature and high flow rate. A large amount of hot flue gas heats the circulating ash in the furnace into high-temperature circulating ash, and the high-temperature circulating ash can be used as a heat source during the coal pyrolysis process. During the coal pyrolysis process, the moisture in the coal turns into high-temperature gaseous coal gas along with the volatile components. During the subsequent condensation process, the water in the coal gas carries organic matter and becomes phenolic wastewater. Phenolic wastewater has the characteristics of being difficult to utilize and having strong pollution. How to cleanly and efficiently treat phenolic wastewater is the key research direction in the current chemical industry.

[0003] According to the patent titled: A phenolic and ammonia wastewater treatment device and method with heat coupling (patent publication number: CN111762950A, patent publication date: 2020-10-13), it includes a raw material preheater, a deacidification tower, a denitrification tower, a water tower, and two-stage extraction towers connected in series before and after an extract tank. The two-stage extraction towers are connected to two-stage solvent recovery towers connected in series before and after; the wastewater removes sulfur-containing components through the deacidification tower; removes ammonia nitrogen in the wastewater through the denitrification tower, and is sequentially extracted through the two-stage extraction towers. The phenol in the wastewater is extracted into the extraction phase and taken out from the top of the extraction tower, serving as the feed for the solvent recovery tower. After being processed through the two-stage solvent recovery towers in sequence, crude phenol is taken out from the bottom of the latter-stage solvent recovery tower, and the solvent is taken out from the top of the solvent recovery tower; at the same time, the raffinate phase taken out from the bottom of the extraction tower is preheated and used as the feed for the water tower. The azeotrope taken out from the top of the water tower is recycled as the solvent, and the purified water taken out from the bottom of the water tower is cooled and sent to the biochemical treatment section. The present invention utilizes heat coupling technology to recover phenol and ammonia in the wastewater, achieving the energy-saving purpose of wastewater treatment.

[0004] Based on the above-mentioned prior art, the existing phenolic wastewater treatment devices currently still have the following problems. When the wastewater in the existing phenolic wastewater treatment device enters the sedimentation tank to remove internal impurities of the wastewater and then enters other units for treatment, the wastewater in the sedimentation tank will flow, resulting in the impurities precipitated in the sedimentation tank flowing with the wastewater into other unit interiors. Therefore, the present invention provides a phenolic wastewater treatment device for coal pyrolysis coupled with a CFB furnace. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a phenol-containing wastewater treatment device for coal pyrolysis coupled with a CFB furnace, which solves the following problems existing in the existing phenol-containing wastewater treatment devices. When the wastewater in the existing phenol-containing wastewater treatment device enters the sedimentation tank to remove the internal impurities of the wastewater and then enters other units for treatment, the wastewater in the sedimentation tank will flow, resulting in the flow of the precipitated impurities in the sedimentation tank and entering other units along with the wastewater.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A phenol-containing wastewater treatment device for coal pyrolysis coupled with a CFB furnace, including a pyrolysis wastewater injection device. A sedimentation tank is arranged on the left side of the pyrolysis wastewater injection device, a reagent reaction kettle is arranged on the left side of the sedimentation tank, an upflow anaerobic sludge bed reactor is arranged on the left side of the reagent reaction kettle, a membrane bioreactor is arranged on the left side of the upflow anaerobic sludge bed reactor, and a disinfection device is arranged on the left side of the membrane bioreactor. A filtering mechanism is arranged between the sedimentation tank and the reagent reaction kettle to prevent the precipitated impurities from being carried out when the wastewater after sedimentation in the sedimentation tank flows. The filtering mechanism includes:

[0007] A filter box unit, arranged on the front side of the sedimentation tank, includes a filter box connected by a water pump. A plug tube is fixedly installed on the rear side of the filter box, and a retaining ring is fixedly installed inside the plug tube. A filter plate is installed behind the retaining ring for secondary filtration of the wastewater flowing out after precipitation in the sedimentation tank. A connecting pipe is inserted into the inside of the plug tube, and one end of the connecting pipe presses the filter plate to fix the filter plate. A threaded button ring is rotatably installed on the surface of the connecting pipe, and the threaded button ring is threadedly rotatably installed on the surface of the plug tube to realize the fixed connection between the filter box and the connecting pipe. One end of the connecting pipe is fixedly installed with a water outlet pipe, and a flow rate sensor is fixedly installed on the surface of the water outlet pipe;

[0008] A cleaning unit, arranged inside the filter box, and used for cleaning the filter plate;

[0009] A driving unit, arranged on the top of the filter box, and used to drive the cleaning unit to rotate reciprocally. The flow rate sensor detects the flow rate of the wastewater inside the water outlet pipe to judge the clogging condition of the filter plate, and drives the cleaning unit to rotate reciprocally to clean the filter plate.

[0010] Preferably, a drain pipe is fixedly installed on the left side of the filter box, and an electromagnetic valve is fixedly installed on the surface of the drain pipe for discharging the impurities cleaned from the filter plate.

[0011] Preferably, the cleaning unit includes an installation box fixedly installed inside the filter box. A first rotating rod is rotatably installed at the rear side of the filter box. A first bevel gear is fixedly installed at the rear end of the first rotating rod. Inside the upper part of the installation box, a second rotating rod is rotatably installed. The top of the second rotating rod penetrates through the filter box and is fixedly installed with a gear. The bottom end of the second rotating rod is fixedly installed with a second bevel gear, and the second bevel gear meshes with the first bevel gear. A brush assembly is arranged on the front side of the first rotating rod to clean the surface of the filter plate.

[0012] Preferably, the brush assembly includes a brush seat fixedly installed at the rear end of the first rotating rod. A clamping groove is formed inside the brush seat. A clamping block is slidably installed inside the clamping groove. One side of the clamping block is fixedly installed with a brush plate, and the brush surface of the brush plate contacts the filter plate.

[0013] Preferably, a screw is rotatably threaded at the rear side of the brush seat, and one end of the screw is rotatably threaded into the inside of the clamping block to fix the position of the clamping block and the clamping groove.

[0014] Preferably, the driving unit includes a sliding seat fixedly installed on the top of the filter box. A rack is slidably installed inside the sliding seat. The rack is meshed and installed with the gear. A sliding groove is formed above the sliding seat. The top of the rack is fixedly installed with a connecting block, and the connecting block slides inside the sliding groove. The top of the connecting block is fixedly installed with a linkage plate, and a linkage groove is formed inside the linkage plate.

[0015] Preferably, an installation frame is fixedly installed on the top of the filter box. A motor is fixedly installed on the top of the installation frame. The output end of the motor penetrates through the installation frame and is fixedly installed with a linkage rod. One end of the linkage rod is fixedly installed with a sliding column, and the sliding column is slidably fitted inside the linkage groove.

[0016] Preferably, a protective shell is fixedly installed on the top of the filter box to protect the parts on the top of the filter box.

[0017] The present invention provides a coal pyrolysis phenol-containing wastewater treatment device coupled with a CFB furnace. Compared with the prior art, it has the following beneficial effects:

[0018] 1. For the coal pyrolysis phenol-containing wastewater treatment device coupled with the CFB furnace, by setting a filter box unit, the filter plate is fixed on one side of the retaining ring by inserting the connecting pipe into the insertion pipe. The water pump sucks the wastewater precipitated in the sedimentation tank into the inside of the filter box, filters it through the filter plate, and then flows into the connecting pipe and the outlet pipe and then into the chemical reaction kettle, thereby realizing secondary filtration of the wastewater, and avoiding the particles in the wastewater sucked into the filter box from flowing into the chemical reaction kettle.

[0019] 2. The phenolic wastewater treatment device for coal pyrolysis in the coupled CFB furnace is provided with a cleaning unit. The flow velocity sensor detects the flow velocity of the wastewater inside the outlet pipe, thereby judging the blockage condition of the filter plate. When the blockage of the filter plate is severe, the driving unit drives the gear and the second rotating rod to rotate. The second rotating rod drives the first bevel gear and the first rotating rod to rotate through the second bevel gear. The first rotating rod drives the brush assembly to clean the surface of the filter plate, avoiding the serious blockage of the filter plate from affecting the wastewater treatment efficiency.

[0020] 3. The phenolic wastewater treatment device for coal pyrolysis in the coupled CFB furnace is provided with a driving unit. The operation of the motor drives the linkage rod and the sliding column to rotate. The sliding column slides inside the linkage groove and drives the linkage plate to move left and right. The linkage plate drives the rack to move synchronously through the connecting block. The rack drives the gear to rotate left and right reciprocally, thereby driving the brush assembly to rotate left and right reciprocally, effectively brushing off the impurities attached to the filter plate. Description of the Drawings

[0021] Figure 1 It is the front orthographic three-dimensional structure diagram of the present invention;

[0022] Figure 2 It is the three-dimensional structure diagram of the filtering mechanism of the present invention;

[0023] Figure 3 It is the sectional three-dimensional structure diagram of the filter box unit of the present invention;

[0024] Figure 4 It is the sectional partial three-dimensional structure diagram of the filtering mechanism of the present invention;

[0025] Figure 5 It is the left sectional three-dimensional structure diagram of the cleaning unit of the present invention;

[0026] Figure 6 It is the left sectional rear view three-dimensional structure diagram of the driving unit of the present invention.

[0027] In the figure: 1 - Pyrolysis wastewater injection device, 2 - Filtration mechanism, 21 - Filter tank unit, 211 - Filter tank, 212 - Drain pipe, 213 - Solenoid valve, 214 - Water pump, 215 - Insertion pipe, 216 - Retaining ring, 217 - Filter plate, 218 - Connecting pipe, 219 - Threaded button ring, 2110 - Outlet pipe, 2111 - Flow rate sensor, 22 - Cleaning unit, 221 - Installation box, 222 - First rotating rod, 223 - First bevel gear, 224 - Second rotating rod, 225 - Second bevel gear, 226 - Gear, 23 - Driving unit, 231 - Sliding seat, 232 - Rack, 233 - Chute, 234 - Connecting block, 235 - Linkage plate, 236 - Linkage groove, 237 - Mounting bracket, 238 - Motor, 239 - Linkage rod, 2310 - Slide post, 2311 - Protective shell, 3 - Sedimentation tank, 4 - Reagent reaction kettle, 5 - Upflow anaerobic sludge bed reactor, 6 - Membrane bioreactor, 7 - Disinfection device, 8 - Brush assembly, 81 - Brush seat, 82 - Card slot, 83 - Card block, 84 - Brush plate, 85 - Screw. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1 - 6 , the present invention provides a technical solution:

[0030] A coal pyrolysis phenol-containing wastewater treatment device coupled with a CFB furnace includes a pyrolysis wastewater injection device 1. A sedimentation tank 3 is arranged on the left side of the pyrolysis wastewater injection device 1. A reagent reaction kettle 4 is arranged on the left side of the sedimentation tank 3. An upflow anaerobic sludge bed reactor 5 is arranged on the left side of the reagent reaction kettle 4. A membrane bioreactor 6 is arranged on the left side of the upflow anaerobic sludge bed reactor 5. A disinfection device 7 is arranged on the left side of the membrane bioreactor 6. A filtration mechanism 2 is arranged between the sedimentation tank 3 and the reagent reaction kettle 4 to ensure that the wastewater after sedimentation in the sedimentation tank 3 does not carry out the precipitated impurities during the flow. The filtration mechanism 2 includes:

[0031] The filter box unit 21 is arranged at the front side of the sedimentation tank 3, and includes a filter box 211 connected by a water pump 214, a plug 215 is fixedly installed on the rear side of the filter box 211, and a retaining ring 216 is fixedly installed inside the plug 215, and a filter plate 217 is installed on the rear side of the retaining ring 216 for secondary filtering of the wastewater flowing out after precipitation in the sedimentation tank 3, and a connecting pipe 218 is inserted and installed inside the plug 215, and one end of the connecting pipe 218 squeezes the filter plate 217 to achieve the fixation of the filter plate 217, and a threaded button ring 219 is rotatably installed on the surface of the connecting pipe 218, and the threaded button ring 219 is threadedly rotatably installed on the surface of the plug 215 to achieve fixed connection between the filter box 211 and the connecting pipe 218, and an outlet pipe 2110 is fixedly installed on one end of the connecting pipe 218, and a flow rate sensor 2111 is fixedly installed on the surface of the outlet pipe 2110;

[0032] The cleaning unit 22 is disposed inside the filter box 211 and is used to clean the filter plate 217;

[0033] The driving unit 23 is arranged on the top of the filter box 211 and is used to drive the cleaning unit 22 to rotate back and forth. The flow rate sensor 2111 detects the wastewater flow rate inside the water pipe 2110, determines the blockage condition of the filter plate 217, and drives the cleaning unit 22 to rotate back and forth to clean the filter plate 217.

[0034] The source of the water is "condensed wastewater during the cascade utilization of pyrolysis high-temperature coal gas energy." Pyrolysis generally refers to the process of decomposing organic matter into gas, liquid and solid products at high temperatures. In this process, a large amount of heat energy is carried. In order to improve energy utilization efficiency, this heat energy can be utilized in a cascade, that is, used for different purposes at different temperature levels. In the process of cascade utilization of energy, condensation will occur in certain links, thereby forming condensed water. These condensed waters contain some organic pollutants or impurities, which are usually referred to as "phenol-containing wastewater."

[0035] The wastewater is pressurized and atomized and sent to the CFB furnace for incineration. The CFB furnace uses high-speed and high-temperature airflow to fluidize the fuel particles (here is wastewater, which may have been processed in advance to be converted into a form suitable for combustion, or certain components in the wastewater have been extracted as fuel) in the furnace, and uses the high temperature in the furnace to completely decompose organic matter into carbon dioxide and water, thereby achieving clean, efficient and stable combustion.

[0036] The model of the water pump 214 is 42113-25A. It is electrically connected to an external power supply and its opening and closing operations are realized through a personnel-operated control panel. The filter plate 217 is fixed on one side of the retaining ring 216 by inserting the connecting pipe 218 into the insertion pipe 215. The water pump 214 sucks the wastewater precipitated in the sedimentation tank 3 into the interior of the filter tank 211, filters it through the filter plate 217, enters the connecting pipe 218 and the outlet pipe 2110, and then flows into the chemical reaction kettle 4, thereby realizing secondary filtration of the wastewater and avoiding the internal particles of the wastewater sucked from the sedimentation tank 3 into the filter tank 211 from flowing into the chemical reaction kettle 4.

[0037] The wastewater enters the sedimentation tank 3 after being preheated by the pyrolysis wastewater injection device 1. The wastewater precipitated in the sedimentation tank 3 enters the chemical reaction kettle 4 through the filtering mechanism 2 for chemical reaction treatment. The treated wastewater enters the upflow anaerobic sludge bed reactor 5 for biological treatment. The treated wastewater enters the membrane bioreactor 6 for advanced treatment. Then the wastewater enters the disinfection device 7 for disinfection treatment and is discharged.

[0038] In this embodiment, a drain pipe 212 is fixedly installed on the left side of the filter tank 211. An electromagnetic valve 213 is fixedly installed on the surface of the drain pipe 212, which is used to discharge the impurities cleaned from the filter plate 217.

[0039] The model of the electromagnetic valve 213 is S101005170N. After the impurities on the filter plate 217 are cleaned by the brush assembly 8, the electromagnetic valve 213 is opened to discharge the wastewater mixed with the impurities cleaned from the filter plate 217 inside the filter tank 211 through the drain pipe 212.

[0040] In this embodiment, the cleaning unit 22 includes an installation box 221 fixedly installed inside the filter tank 211. A first rotating rod 222 is rotatably installed at the rear side of the filter tank 211. A first bevel gear 223 is fixedly installed at the rear end of the first rotating rod 222. A second rotating rod 224 is rotatably installed inside the upper part of the installation box 221. The top of the second rotating rod 224 penetrates through the filter tank 211 and is fixedly installed with a gear 226. A second bevel gear 225 is fixedly installed at the bottom end of the second rotating rod 224. The second bevel gear 225 meshes with the first bevel gear 223. A brush assembly 8 is arranged on the front side of the first rotating rod 222 to clean the surface of the filter plate 217.

[0041] The model of the flow velocity sensor 2111 is MH-QTL200. The internal waste water flow velocity of the water pipe 2110 is detected by the flow velocity sensor 2111, so as to judge the blockage condition of the filter plate 217. When the blockage condition of the filter plate 217 is serious, the driving unit 23 drives the gear 226 and the second rotating rod 224 to rotate. The second rotating rod 224 drives the first bevel gear 223 and the first rotating rod 222 to rotate through the second bevel gear 225. The first rotating rod 222 drives the brush assembly 8 to clean the surface of the filter plate 217, so as to avoid the serious blockage of the filter plate 217 affecting the waste water treatment efficiency.

[0042] In this embodiment, the brush assembly 8 includes a brush seat 81 fixedly installed at the rear end of the first rotating rod 222. A clamping groove 82 is formed inside the brush seat 81. A clamping block 83 is slidably installed inside the clamping groove 82. A brush plate 84 is fixedly installed on one side of the clamping block 83. The brush surface of the brush plate 84 contacts the filter plate 217.

[0043] The brush surface of the brush plate 84 contacts the surface of the filter plate 217 and is driven by the driving unit 23 and the cleaning unit 22, so as to realize the reciprocating rotation cleaning of the filter plate 217.

[0044] In this embodiment, a screw 85 is rotatably installed in a threaded manner at the rear side of the brush seat 81. One end of the screw 85 is rotatably inserted into the clamping block 83 in a threaded manner to fix the position of the clamping block 83 and the clamping groove 82.

[0045] One end of the screw 85 is rotatably inserted into the clamping block 83 in a threaded manner to fix the position of the clamping block 83 and the clamping groove 82, so as to facilitate the replacement of the brush plate 84.

[0046] In this embodiment, the driving unit 23 includes a sliding seat 231 fixedly installed on the top of the filter box 211. A rack 232 is slidably installed inside the sliding seat 231. The rack 232 is meshed with the gear 226. A sliding groove 233 is formed above the sliding seat 231. A connecting block 234 is fixedly installed at the top of the rack 232. The connecting block 234 slides inside the sliding groove 233. A linkage plate 235 is fixedly installed at the top of the connecting block 234. A linkage groove 236 is formed inside the linkage plate 235. An installation frame 237 is fixedly installed on the top of the filter box 211. A motor 238 is fixedly installed on the top of the installation frame 237. The output end of the motor 238 penetrates through the installation frame 237 and is fixedly installed with a linkage rod 239. A sliding column 2310 is fixedly installed at one end of the linkage rod 239. The sliding column 2310 is slidably fitted inside the linkage groove 236.

[0047] The motor 238 is a three-phase asynchronous motor with a self-locking function. It is electrically connected to an external power supply and its opening and closing operations are realized through a personnel-operated control panel. When the motor 238 operates, it drives the linkage rod 239 and the sliding column 2310 to rotate. The sliding column 2310 slides inside the linkage groove 236 and drives the linkage plate 235 to move left and right. The linkage plate 235 drives the rack 232 to move synchronously through the connecting block 234. The rack 232 drives the gear 226 to rotate reciprocally left and right, thereby driving the brush assembly 8 to rotate reciprocally left and right, effectively brushing off the impurities attached to the filter plate 217.

[0048] In this embodiment, a protective shell 2311 is fixedly installed on the top of the filter box 211 to protect the parts on the top of the filter box 211.

[0049] By means of the protective shell 2311 fixedly installed on the top of the filter box 211, the parts on the top of the filter box 211 are protected. Moreover, heat dissipation holes are provided on both the front and rear sides of the protective shell 2311, thereby realizing heat dissipation inside the protective shell 2311.

[0050] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0051] During operation, first, the pyrolysis wastewater spraying device 1 preheats the wastewater. The water pump 214 sucks the wastewater sedimented in the sedimentation tank 3 into the interior of the filter box 211, filters it through the filter plate 217, enters the connecting pipe 218 and the outlet pipe 2110, and then flows into the chemical reaction kettle 4.

[0052] Then, the flow velocity sensor 2111 detects the flow velocity of the wastewater inside the outlet pipe 2110 to judge the clogging condition of the filter plate 217. When the clogging condition of the filter plate 217 is serious, the motor 238 operates to drive the linkage rod 239 and the sliding column 2310 to rotate. The sliding column 2310 slides inside the linkage groove 236 and drives the linkage plate 235 to move left and right. The linkage plate 235 drives the rack 232 to move synchronously through the connecting block 234. The rack 232 drives the gear 226 to rotate reciprocally left and right. The gear 226 drives the second rotating rod 224 to rotate. The second rotating rod 224 drives the first bevel gear 223 and the first rotating rod 222 to rotate through the second bevel gear 225. The first rotating rod 222 drives the brush assembly 8 to clean the surface of the filter plate 217.

[0053] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0054] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal pyrolysis phenol-containing wastewater treatment device coupled to a CFB furnace, comprising a pyrolysis wastewater injection device (1), a sedimentation tank (3) is arranged on the left side of the pyrolysis wastewater injection device (1), a reagent reactor (4) is arranged on the left side of the sedimentation tank (3), an upflow anaerobic sludge blanket reactor (5) is arranged on the left side of the reagent reactor (4), a membrane bioreactor (6) is arranged on the left side of the upflow anaerobic sludge blanket reactor (5), and a disinfection device (7) is arranged on the left side of the membrane bioreactor (6), characterized in that: A filtering mechanism (2) is provided between the sedimentation tank (3) and the reagent reaction kettle (4) to ensure that the wastewater after sedimentation in the sedimentation tank (3) does not carry out the precipitated impurities when flowing, and the filtering mechanism (2) includes: The filter box unit (21) is arranged at the front side of the sedimentation tank (3), and comprises a filter box (211) connected via a water pump (214), a plug pipe (215) is fixedly installed at the rear side of the filter box (211), a retaining ring (216) is fixedly installed inside the plug pipe (215), a filter plate (217) is installed at the rear side of the retaining ring (216) for secondary filtering of wastewater flowing out after sedimentation in the sedimentation tank (3), and a connecting pipe (218) is inserted and installed inside the plug pipe (215), and One end of the connecting pipe (218) squeezes the filter plate (217) to fix the filter plate (217), and a threaded button ring (219) is rotatably mounted on the surface of the connecting pipe (218), and the threaded button ring (219) is threadedly rotatably mounted on the surface of the insert pipe (215) to achieve fixed connection between the filter box (211) and the connecting pipe (218), and a water outlet pipe (2110) is fixedly mounted on one end of the connecting pipe (218), and a flow rate sensor (2111) is fixedly mounted on the surface of the water outlet pipe (2110); A cleaning unit (22) is disposed inside the filter box (211) and is used to clean the filter plate (217); The driving unit (23) is arranged on the top of the filter box (211) and is used to drive the cleaning unit (22) to rotate back and forth, detect the flow rate of wastewater inside the water outlet pipe (2110) through the flow rate sensor (2111), judge the blockage condition of the filter plate (217), and drive the cleaning unit (22) to rotate back and forth to clean the filter plate (217).

2. The device for treating phenol-containing wastewater from coal pyrolysis coupled to a CFB furnace according to claim 1, characterized in that: A drain pipe (212) is fixedly installed on the left side of the filter box (211), and a solenoid valve (213) is fixedly installed on the surface of the drain pipe (212) for discharging impurities cleaned off the filter plate (217).

3. The device for treating phenol-containing wastewater from coal pyrolysis coupled to a CFB furnace according to claim 1, characterized in that: The cleaning unit (22) comprises an installation box (221) fixedly installed inside the filter box (211); a first rotating rod (222) is rotatably installed on the rear side of the filter box (211); a first bevel gear (223) is fixedly installed on the rear end of the first rotating rod (222); a second rotating rod (224) is rotatably installed inside the upper part of the installation box (221); a gear (226) is fixedly installed on the top of the second rotating rod (224) passing through the filter box (211); a second bevel gear (225) is fixedly installed on the bottom end of the second rotating rod (224); and the second bevel gear (225) is meshed with the first bevel gear (223); a brush assembly (8) is arranged on the front side of the first rotating rod (222) to clean the surface of the filter plate (217).

4. The device for treating phenol-containing wastewater from coal pyrolysis coupled to a CFB furnace according to claim 3, characterized in that: The brush assembly (8) comprises a brush seat (81) fixedly mounted on the rear end of the first rotating rod (222), a slot (82) being provided inside the brush seat (81), a block (83) being slidably mounted inside the slot (82), a brush plate (84) being fixedly mounted on one side of the block (83), and a brush surface of the brush plate (84) being in contact with the filter plate (217).

5. The device for treating phenol-containing wastewater from coal pyrolysis coupled to a CFB furnace according to claim 4, characterized in that: A screw (85) is threadedly mounted on the rear side of the brush seat (81), and one end of the screw (85) is threadedly inserted into the interior of the clamping block (83) to fix the position of the clamping block (83) and the clamping slot (82).

6. The device for treating phenol-containing wastewater from coal pyrolysis coupled to a CFB furnace according to claim 3, characterized in that: The driving unit (23) comprises a sliding seat (231) fixedly mounted on the top of the filter box (211), a rack (232) being slidably mounted inside the sliding seat (231), the rack (232) being meshed with the gear (226), a sliding groove (233) being provided above the sliding seat (231), a connecting block (234) being fixedly mounted on the top of the rack (232), the connecting block (234) being located inside the sliding groove (233) and sliding, a linkage plate (235) being fixedly mounted on the top of the connecting block (234), and a linkage groove (236) being provided inside the linkage plate (235).

7. The device for treating phenol-containing wastewater from coal pyrolysis coupled to a CFB furnace according to claim 6, characterized in that: A mounting frame (237) is fixedly mounted on the top of the filter box (211), and a motor (238) is fixedly mounted on the top of the mounting frame (237), and a linkage rod (239) is fixedly mounted on the output end of the motor (238) through the mounting frame (237), and a sliding column (2310) is fixedly mounted on one end of the linkage rod (239), and the sliding column (2310) is located inside the linkage groove (236) for sliding adaptation.

8. The device for treating phenol-containing wastewater from coal pyrolysis coupled to a CFB furnace according to claim 1, characterized in that: A protective shell (2311) is fixedly mounted on the top of the filter box (211) to protect the parts on the top of the filter box (211).

Images