Industrial flue gas dust removal, desulfurization and denitrification treatment device and method

Abstract

The invention relates to the technical field of flue gas treatment, and particularly discloses an industrial flue gas dust removal, desulfurization and denitrification treatment device and method.The industrial flue gas dust removal, desulfurization and denitrification treatment device comprises a tank body, an upper partition plate and a lower partition plate are arranged in the tank body, and an absorption cavity is formed between the upper partition plate and the lower partition plate and used for storing absorption liquid; a dust removal box and a vertical cylinder are arranged at the bottom of the lower partition plate, a communicating pipe is arranged between the dust removal box and the vertical cylinder, an outer ring is slidably arranged in the vertical cylinder, a stepped groove is formed in the bottom of the outer ring, and an inner disc is slidably assembled on the outer ring; according to the dust removal, desulfurization and denitrification treatment device and method for the industrial flue gas, the outer ring is matched with the inner disc, and the flue gas is pressurized and then is injected into absorption liquid in a spraying and dispersing manner through the connector, so that the flue gas is effectively dispersed, and the contact coverage of the flue gas and the absorption liquid is maximized; the absorption liquid and harmful substances such as sulfur and nitrate are fully reacted and absorbed, so that the utilization rate of the absorption liquid and the absorption effect on flue gas are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas treatment, in particular to an industrial flue gas dust removal, desulfurization and denitrification treatment device and method. BACKGROUND

[0002] Industrial flue gas is a gas mixture containing various pollutants discharged in the industrial production process. At present, the treatment of industrial flue gas focuses on "classified treatment and standard discharge", which requires the treatment of harmful substances such as dust, sulfur and nitrogen in the flue gas to reduce environmental pollution of the flue gas, and the flue gas can be discharged only after reaching the standard.

[0003] When the industrial flue gas is treated by desulfurization and denitrification, the flue gas is usually sent into a treatment device, and the harmful substances such as sulfur and nitrogen in the flue gas are reacted and absorbed by spraying the absorption liquid. The treatment efficiency of the flue gas is low and the effect is poor. The flue gas is often unevenly dispersed in the device, and the concentration of the flue gas in different areas is too different. By using the spraying covering method, the absorption liquid has poor contact and covering effect on the flue gas, it is difficult to ensure the full contact of the absorption liquid with the flue gas, and then it is difficult to ensure the equivalent treatment effect of the absorption liquid on the flue gas in each area. SUMMARY

[0004] The present application provides an industrial flue gas dust removal, desulfurization and denitrification treatment device and method, which aims to solve the problem of poor contact and covering effect of the absorption liquid on the flue gas by spraying covering in the related art, and to ensure the full contact of the absorption liquid with the flue gas.

[0005] The industrial flue gas dust removal, desulfurization and denitrification treatment device and method of the present application comprises a tank body, an upper partition plate and a lower partition plate are arranged inside the tank body, and an absorption cavity is formed between the upper partition plate and the lower partition plate for storing absorption liquid; A dust removal box and a vertical cylinder are arranged at the bottom of the lower partition plate, and a communication pipe is arranged between the dust removal box and the vertical cylinder. An outer ring is slidably arranged in the vertical cylinder. A stepped groove is formed at the bottom of the outer ring. An inner disc is slidably assembled on the outer ring, and the inner disc can be lifted and lowered in the vertical cylinder. When lifted, the inner disc enters and closes the stepped groove, and then lifts the outer ring. When lowered, the inner disc is separated from the stepped groove, and then lowers the outer ring. A magnetic attraction mechanism is arranged between the outer ring and the vertical cylinder to prevent the outer ring from sliding in the vertical cylinder without external force. A joint is arranged at the top of the vertical cylinder inside the absorption cavity. An exhaust hole is formed in the joint. A closing plate is arranged in the joint, and the closing plate can be lowered with the lifting of the inner disc to unblock the exhaust hole, and lifted with the lowering of the inner disc to block the exhaust hole.

[0006] Preferably, a guide rod is fixedly installed on the inner disc and slidably arranged in the outer ring, and a baffle is fixedly installed at the top of the guide rod above the outer ring.

[0007] Preferably, the inside of the vertical cylinder is fixedly provided with a support, a reciprocating lead screw is rotatably arranged in the support, and a sliding sleeve fixed to the inner disc is arranged on the outside of the reciprocating lead screw, which can reciprocate along the axial direction of the reciprocating lead screw.

[0008] Preferably, the bottom end of the reciprocating lead screw is fixedly provided with a gear, a rotating disc is rotatably arranged on the inner bottom wall of the tank body, a gear ring coaxially fixed to the gear is arranged on the rotating disc, and a motor for driving the rotating disc to rotate is fixedly arranged at the bottom of the tank body.

[0009] Preferably, the inside of the joint is coaxially fixedly provided with an annular plate, the middle part of the annular plate is coaxially fixedly provided with an inner tube, the bottom end of the inner tube is provided with a tapered head capable of being lifted relative to the inner tube, the top of the tapered head is fixedly provided with a sealing block inserted into the inner tube.

[0010] Preferably, the top of the tapered head is provided with an extension extending to the side of the inner tube, so as to form a gas collecting cavity between the tapered head and the outer wall of the inner tube, and a spring is arranged between the annular plate and the tapered head.

[0011] Preferably, the inner wall of the vertical cylinder is provided with a limiting groove along the axial direction thereof, a magnet slidingly arranged in the limiting groove is fixedly arranged on the outer ring, and an adsorption plate vertically fixed on the outer wall of the vertical cylinder can be adsorbed with the magnet.

[0012] Preferably, the bottom of the upper baffle is provided with an annular tube located in the absorption cavity, the bottom of the annular tube is provided with a shower head, one side of the annular tube is provided with a delivery pump capable of injecting the absorption liquid in the absorption cavity into the annular tube, an exhaust cavity is formed between the top of the upper baffle and the tank body, an exhaust pipe communicating with the exhaust cavity is inserted into the top of the tank body, and an activated carbon filter plate located below the exhaust pipe is arranged in the inside of the exhaust cavity.

[0013] Preferably, the bottom of the upper baffle is further rotatably provided with a middle shaft located in the absorption cavity, the bottom end of the middle shaft is fixedly provided with a stirring blade, a mesh plate is fixedly arranged on the middle shaft, and a thorn needle is fixedly arranged at the bottom of the mesh plate.

[0014] An industrial flue gas dust removal, desulfurization and denitrification treatment method comprises the following steps: Step one: the flue gas is introduced into the dust removal box, and the filtration of the smoke dust is completed in the inside of the dust removal box; Step two: the dust-removed flue gas enters the inside of the vertical cylinder through the communication pipe, and the flue gas passes through the stepped groove to the upper side of the outer ring and the inner disc; Step three: the reciprocating lead screw is rotated and the sliding sleeve is pushed to make the inner disc lift into the inside of the stepped groove, the outer ring is pushed to overcome the magnetic attraction force to lift and compress the space where the flue gas is located, in cooperation with the outer ring; Step four: the smoke pressure is increased, the smoke is injected into the absorption liquid in the absorption cavity through the joint and the exhaust hole, and the harmful substances in the smoke are reacted and absorbed by the absorption liquid; Step five: the absorption liquid is stirred by the stirring blade, and the smoke bubbles in the absorption liquid are punctured by the needle, so that the smoke is more fully contacted with the absorption liquid; Step six: the absorption liquid is sprayed by the spray head, and the harmful substances are further absorbed, and then the smoke is adsorbed and filtered by the activated carbon filter plate and discharged by the exhaust pipe; Step seven: the smoke injection is completed, the inner disc is lowered by the reciprocating lead screw, the inner disc is separated from the stepped groove to open again, and then the outer ring is lowered and reset by the guide rod and the baffle, the filling of the smoke is performed, and at the same time, after losing the smoke pressure, the spring drives the conical head to lift and reset, the closing plate is lifted, the plug rod is inserted into the exhaust hole, and the exhaust hole is closed and cleaned.

[0015] Advantages: 1. In use, the outer ring and the inner disc cooperate to inject the smoke into the absorption liquid after pressurization by the joint, effectively dispersing the smoke, maximizing the contact coverage of the smoke and the absorption liquid, and fully reacting and absorbing the harmful substances such as sulfur and nitrogen in the absorption liquid, thereby improving the utilization rate of the absorption liquid and the absorption effect of the smoke.

[0016] 2. In use, the exhaust hole of the joint can be automatically closed after the injection is completed, which can prevent the absorption liquid from flowing back into the joint, and can automatically clean the exhaust hole, effectively preventing the exhaust hole from being blocked, and ensuring good injection and discharge effect of the smoke.

[0017] 3. In use, the stirring blade and the needle cooperate to better stir the absorption liquid, so that the smoke is evenly distributed in the absorption liquid, and the smoke bubbles are better punctured, so that the smoke is more fully contacted with the absorption liquid. DETAILED DESCRIPTION

[0018] Figure 1 is a perspective view of the present application.

[0019] Figure 2 is a front view of the present application.

[0020] Figure 3 is an enlarged structure diagram of A in the present application. Figure 2

[0021] Figure 4 is an enlarged structure diagram of B in the present application. Figure 2

[0022] Figure 5 ​​is a structural schematic view of the bottom of the vertical cylinder of the present application.

[0023] Figure 6 is a perspective view of the outer ring and the inner disc of the present application.

[0024] Figure 7 is a structural schematic view of the bottom of the outer ring of the present application.

[0025] Figure 8 is a perspective view of the inner disc of the present application.

[0026] Figure 9 is a perspective view of the closure plate and the conical head of the present application.

[0027] Reference signs: 10, tank body; 11, upper partition plate; 12, lower partition plate; 121, liquid discharge pipe; 13, air inlet cavity; 14, absorption cavity; 141, annular pipe; 142, shower head; 143, central shaft; 144, stirring blade; 145, mesh plate; 146, thorn needle; 15, air outlet cavity; 16, air outlet pipe; 17, activated carbon filter plate; 20, dust removal box; 21, air inlet pipe; 22, communication pipe; 23, filter cartridge; 30, vertical cylinder; 31, insertion pipe; 32, one-way valve; 33, support; 34, limiting groove; 40, pressure boosting assembly; 41, outer ring; 411, stepped groove; 42, inner disc; 421, guide rod; 422, baffle; 50, magnetic attraction mechanism; 51, magnet; 52, adsorption plate; 60, pushing assembly; 61, reciprocating lead screw; 62, sliding sleeve; 70, air exhaust assembly; 71, joint; 711, air exhaust hole; 712, annular plate; 713, inner pipe; 714, conical head; 715, sealing block; 716, extension; 717, connecting rod; 718, spring; 72, closure plate; 73, insertion rod; 80, driving mechanism; 81, rotating disc; 82, gear ring; 83, gear; 84, motor. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0029] As Figures 1 to 9As shown, the industrial flue gas dust removal desulfurization and denitrification treatment device of the present application comprises a tank body 10, a dust removal box 20, a vertical cylinder 30, a booster assembly 40, a magnetic attraction mechanism 50, a pushing assembly 60, an exhaust assembly 70, and a driving mechanism 80. The dust removal box 20 and the vertical cylinder 30 are arranged in the tank body 10. The vertical cylinder 30 has a plurality of annularly distributed rings outside the dust removal box 20 and is in communication with the dust removal box 20. The top end of the vertical cylinder 30 is in communication with the exhaust assembly 70. The booster assembly 40 is arranged in the vertical cylinder 30 and can pressurize the flue gas under the driving of the pushing assembly 60. The pressurized flue gas is sent into the exhaust assembly 70. The flue gas is injected into the absorption liquid by the exhaust assembly 70 to complete the absorption treatment of harmful substances such as sulfur and nitrogen. The magnetic attraction mechanism 50 is arranged between the vertical cylinder 30 and the booster assembly 40 and can fill the flue gas with the descending booster assembly 40 to facilitate the re-injection of the flue gas.

[0030] Reference Figure 2 The inside of the tank body 10 is fixedly installed with an upper partition plate 11 and a lower partition plate 12. The bottom of the lower partition plate 12 and the tank body 10 form an air inlet cavity 13, which can input the flue gas. The upper partition plate 11 and the lower partition plate 12 form an absorption cavity 14 for storing absorption liquid to react and absorb harmful substances such as sulfur and nitrogen in the flue gas. The top of the upper partition plate 11 and the tank body 10 form an exhaust cavity 15 for discharging the flue gas.

[0031] The lower partition plate 12 is conical, and the bottom of the lower partition plate 12 is provided with a liquid discharge pipe 121 extending to the outside of the tank body 10. The top of the tank body 10 is inserted with an exhaust pipe 16 in communication with the exhaust cavity 15. The inside of the exhaust cavity 15 is provided with an activated carbon filter plate 17 below the exhaust pipe 16 to adsorb and filter the flue gas before it is discharged.

[0032] The bottom of the upper partition plate 11 is provided with an annular pipe 141 in the absorption cavity 14. The bottom of the annular pipe 141 is provided with a spray head 142. One side of the annular pipe 141 is provided with a delivery pump, which can inject the absorption liquid in the absorption cavity 14 into the annular pipe 141, and then spray it out of the spray head 142 to spray and absorb the flue gas and further absorb the harmful substances in the flue gas.

[0033] Reference Figure 2The bottom of the upper partition 11 is also rotatably equipped with a central shaft 143 located in the absorption chamber 14. A stirring blade 144 is fixedly installed at the bottom of the central shaft 143, which can agitate the absorbent liquid as the central shaft 143 rotates, thereby increasing the movement path of flue gas bubbles in the absorbent liquid, extending the reaction time, and making the flue gas more evenly distributed in the absorbent liquid in the absorption chamber 14. A mesh plate 145 is fixedly installed on the central shaft 143, and a needle 146 is fixedly installed at the bottom of the mesh plate 145. As the mesh plate 145 rotates with the central shaft 143, the needle 146 moves in the absorbent liquid, which can puncture large flue gas bubbles, causing them to break and disperse into smaller bubbles, thereby improving the absorption reaction effect of the absorbent liquid on harmful substances in the flue gas.

[0034] refer to Figure 1 and Figure 2 The dust collector 20 is located inside the air inlet chamber 13, and an air inlet pipe 21 is inserted into its top. The end of the air inlet pipe 21 away from the dust collector 20 extends to the outside of the tank body 10. A connecting pipe 22 is provided between the dust collector 20 and the vertical cylinder 30 so that the flue gas sent into the dust collector 20 by the air inlet pipe 21 can enter the interior of the vertical cylinder 30 through the connecting pipe 22. A filter cartridge 23 is also coaxially arranged inside the dust collector 20, which can filter the flue gas entering the connecting pipe 22 and remove dust particles from the flue gas.

[0035] refer to Figure 2 and Figure 5 The vertical cylinder 30 is fixed inside the air inlet chamber 13, and an insertion tube 31 is fixedly installed at the top of the vertical cylinder 30. The top of the insertion tube 31 extends through the lower partition 12 into the absorption chamber 14, so that the flue gas in the vertical cylinder 30 can enter the absorption chamber 14. A one-way valve 32 is provided inside the insertion tube 31, which can open when the air pressure in the vertical cylinder 30 increases, allowing the flue gas to flow in the insertion tube 31, and close when the air pressure returns to normal, sealing the inside of the insertion tube 31. A support 33 is fixedly installed inside the vertical cylinder 30 for supporting the installation of the push assembly 60.

[0036] refer to Figure 3 , Figure 6 , Figure 7 as well as Figure 8, the booster assembly 40 comprises an outer ring 41 and an inner disc 42, the outer ring 41 is coaxially arranged in the vertical cylinder 30, the side wall of the outer ring 41 is arranged close to the inner wall of the vertical cylinder 30 and can slide up and down in the vertical cylinder 30, the bottom of the outer ring 41 is provided with a stepped groove 411, so that the flue gas can flow in the middle of the outer ring 41, the flue gas below the outer ring 41 can be filled into the upper part of the outer ring 41 through the stepped groove 411, the inner disc 42 is slidingly assembled in the outer ring 41, the shape and size of the inner disc 42 are matched with the stepped groove 411, and the inner disc 42 is located directly below the stepped groove 411, the inner disc 42 can enter the stepped groove 411 in the lifting, close the stepped groove 411, and drive the outer ring 41 to lift, so that a sealed space is formed above the outer ring 41, and then the flue gas above the outer ring 41 can be compressed when the outer ring 41 is lifted, the pressure of the flue gas is increased, and then the one-way valve 32 is forced to open, and the flue gas after boosting is sent into the absorption cavity 14 through the insertion pipe 31; the inner disc 42 can be separated from the stepped groove 411 in the descending, and the outer ring 41 is lowered, so that the stepped groove 411 is opened, and the flue gas can be supplemented into the upper part of the outer ring 41.

[0037] The inner disc 42 is fixedly installed with a guide rod 421, the guide rod 421 is slidingly arranged in the outer ring 41, and the top end of the guide rod 421 is fixedly installed with a baffle 422 located above the outer ring 41, when the inner disc 42 descends, the guide rod 421 slides and descends in the outer ring 41, the baffle 422 descends and is attached to the top of the outer ring 41, the outer ring 41 is driven to descend by the guide rod 421 and the baffle 422, and then the flue gas above the outer ring 41 is supplemented.

[0038] Reference Figure 3 The magnetic attraction mechanism 50 is composed of a magnet 51 and an adsorption plate 52, the magnet 51 is fixed on the outer ring 41, the adsorption plate 52 is vertically fixed on the outer wall of the vertical cylinder 30, and the adsorption plate 52 can be attracted to the magnet 51, so that the outer ring 41 stays in the vertical cylinder 30 and does not slide in the vertical cylinder 30 without external force, the inner wall of the vertical cylinder 30 is provided with a limiting groove 34 along the axial direction of the vertical cylinder 30, and the magnet 51 is slidingly arranged in the limiting groove 34, so that the outer ring 41 can be lifted while being limited by the magnet 51 in the limiting groove 34, so that the outer ring 41 cannot rotate in the vertical cylinder 30.

[0039] Reference Figure 2 And Figure 8 The pushing assembly 60 comprises a reciprocating screw 61 and a sliding sleeve 62, the reciprocating screw 61 is rotationally assembled in the support 33, the sliding sleeve 62 is fixed with the inner disc 42 and is arranged on the reciprocating screw 61, can reciprocally slide along the axial direction of the reciprocating screw 61 by the rotation of the reciprocating screw 61, and then drives the inner disc 42 to ascend and descend in the vertical cylinder 30.

[0040] Reference Figure 2 , Figure 3 And Figure 9The exhaust assembly 70 comprises a joint 71, a closing plate 72 and a plug 73. The joint 71 is conical, located in the absorption cavity 14 and coaxially arranged at the top end of the insertion pipe 31. A exhaust hole 711 is formed at the top of the joint 71. The closing plate 72 is arranged inside the joint 71 and used to close the exhaust hole 711. The plug 73 is fixedly installed on the closing plate 72 and the top end of the plug 73 is inserted into the exhaust hole 711. When the flue gas enters the joint 71, the closing plate 72 can be lowered to make the plug 73 disengage from the exhaust hole 711, so that the exhaust hole 711 is opened to facilitate the discharge of the flue gas. After the discharge of the flue gas is completed, the closing plate 72 can be lifted to make the plug 73 inserted into the exhaust hole 711, so that the exhaust hole 711 is closed and cleaned, avoiding that the deposits in the absorption cavity 14 block the exhaust hole 711 and ensuring the smoothness of the exhaust hole 711.

[0041] The joint 71 is coaxially fixed with an annular plate 712. The middle part of the annular plate 712 is coaxially fixed with an inner tube 713. The bottom end of the inner tube 713 is provided with a conical head 714 which can be lifted and lowered relative to the inner tube 713. The top of the conical head 714 is fixedly installed with a sealing block 715 which is inserted into the inner tube 713 and used to block the bottom end of the inner tube 713. The top of the conical head 714 is provided with an extension 716 extending to the side of the inner tube 713, so that a gas gathering cavity is formed between the conical head 714 and the outer wall of the inner tube 713. The flue gas entering the joint 71 gathers in the gas gathering cavity. With the increase of the flue gas pressure, the conical head 714 is pushed to move downward, so that the sealing block 715 is lowered to disengage from the inner tube 713, so that the bottom end of the inner tube 713 is opened. The sealing block 715 and the closing plate 72 are fixedly connected with a connecting rod 717, so that the conical head 714 can drive the closing plate 72 to synchronously lower when the conical head 714 is lowered, so that the plug 73 disengages from the exhaust hole 711. The annular plate 712 and the conical head 714 are provided with a spring 718 which can be stretched when the conical head 714 is lowered and drive the conical head 714 to lift and reset after the discharge of the flue gas, so that the plug 73 closes and cleans the exhaust hole 711.

[0042] Reference Figure 2 With Figure 5 The driving mechanism 80 comprises a rotating disc 81, a gear ring 82, a gear 83 and a motor 84. The rotating disc 81 is rotatably arranged at the inner bottom wall of the tank body 10. The gear ring 82 is coaxially fixed on the rotating disc 81. The gear 83 is fixedly installed at the bottom end of the reciprocating lead screw 61 and engaged with the gear ring 82. The motor 84 is fixedly installed at the bottom of the tank body 10 and used to drive the rotating disc 81 to rotate, so that the gear ring 82 drives the gear 83 to rotate, and then the reciprocating lead screw 61 is driven to rotate to drive the sliding sleeve 62 and the inner disc 42 to lift and lower.

[0043] An industrial flue gas dust removal, desulfurization and denitrification treatment method comprises the following steps: Step one: the flue gas is introduced into the dust removal box 20 by the inlet pipe 21, and the filtration of the dust in the flue gas is completed by the filter cartridge 23 inside the dust removal box 20, so as to remove the dust particles in the flue gas; Step two: the dust-removed flue gas enters the inside of the vertical cylinder 30 through the communication pipe 22, and the flue gas passes through the stepped groove 411 to enter the upper side of the outer ring 41 and the inner disc 42; Step three: the reciprocating screw rod 61 rotates and pushes the sliding sleeve 62 to make the inner disc 42 lift into the inside of the stepped groove 411, and the outer ring 41 forms a seal with the vertical cylinder 30, and then the outer ring 41 is pushed to overcome the magnetic attraction between the magnet 51 and the adsorption plate 52, so as to lift and compress the space where the flue gas is located; Step four: the flue gas pressure increases, and then forces the one-way valve 32 in the cannula 31 to open, and then enters the joint 71, and the flue gas gradually gathered in the gas gathering cavity above the conical head 714, and the flue gas with gradually increasing pressure pushes the conical head 714 to descend, so that the sealing block 715 is separated from the inner tube 713, and the closing plate 72 is lowered, so that the insertion rod 73 is separated from the exhaust hole 711, and then the flue gas is injected into the absorption liquid in the absorption cavity 14 by the exhaust hole 711, and the harmful substances such as sulfur and nitrogen in the flue gas are reacted and absorbed by the absorption liquid; Step five: the central shaft 143 drives the stirring blade 144 and the mesh plate 145 to rotate, and the stirring blade 144 stirs the absorption liquid, and the thorn needle 146 pierces the flue gas bubbles formed in the absorption liquid, so that the flue gas more fully contacts the absorption liquid; Step six: the spray head 142 sprays the absorption liquid, further absorbs the harmful substances such as sulfur and nitrogen remaining in the flue gas, and then the flue gas is adsorbed and filtered by the activated carbon filter plate 17, and is discharged by the exhaust pipe 16; Step seven: after the flue gas injection is completed, the reciprocating screw rod 61 drives the inner disc 42 to descend, and the inner disc 42 is separated from the stepped groove 411 to make it open again, and then the outer ring 41 is lowered and reset by the guide rod 421 and the baffle 422, and the filling of the flue gas is performed, and at the same time, after losing the flue gas pressure, the conical head 714 is lifted and reset by the spring 718, so that the closing plate 72 is lifted, and the insertion rod 73 is inserted into the exhaust hole 711 to close and clean it.

[0044] In the application, the flue gas is pressurized by the cooperation of the outer ring 41 and the inner disc 42, and then dispersedly injected into the inside of the absorbing liquid by the joint 71, so that the flue gas is effectively dispersed, the contact coverage of the flue gas and the absorbing liquid is maximized, the reaction and absorption of the absorbing liquid and harmful substances such as sulfur and nitrate are fully carried out, the utilization rate of the absorbing liquid and the absorption effect of the flue gas are improved, and after the injection is completed, the exhaust hole 711 of the joint 71 can be automatically closed, while avoiding the backflow of the absorbing liquid into the joint 71, the exhaust hole 711 can be automatically cleaned, the blockage of the exhaust hole 711 is effectively avoided, and the good injection and discharge effect of the flue gas is ensured; through the cooperation of the stirring blade 144 and the needle 146, the absorbing liquid is better stirred, the flue gas bubbles are better broken, and the flue gas is more fully contacted with the absorbing liquid; the flue gas is further treated by the spray head 142 and the activated carbon filter plate 17, the residual harmful substances in the flue gas are effectively reduced, and the treatment effect of the equipment on the flue gas is improved.

[0045] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An industrial flue gas dust removal desulfurization and denitrification treatment device comprising a tank body (10), characterized in that, The inside of the tank body (10) is provided with an upper partition plate (11) and a lower partition plate (12), and an absorption cavity (14) is formed between the upper partition plate (11) and the lower partition plate (12) to store absorption liquid; The bottom of the lower partition plate (12) is provided with a dust removal box (20) and a vertical cylinder (30), and a communication pipe (22) is arranged between the dust removal box (20) and the vertical cylinder (30), the inside of the vertical cylinder (30) is slidably provided with an outer ring (41), the bottom of the outer ring (41) is provided with a stepped groove (411), the outer ring (41) is slidably assembled with an inner disc (42), and the inner disc (42) can be lifted in the vertical cylinder (30), enter and close the stepped groove (411), and then drive the outer ring (41) to lift, and then separate from the stepped groove (411) and then drive the outer ring (41) to descend; A magnetic attraction mechanism (50) is arranged between the outer ring (41) and the vertical cylinder (30) to prevent the outer ring (41) from sliding in the vertical cylinder (30) without external force; The top end of the vertical cylinder (30) is provided with a connector (71) located in the absorption cavity (14), the connector (71) is provided with an exhaust hole (711), the connector (71) is provided with a closing plate (72), and the closing plate (72) can be lowered with the lifting of the inner disc (42), the closing of the exhaust hole (711) is released, and the closing plate (72) is lifted with the descent of the inner disc (42) to close the exhaust hole (711).

2. The industrial flue gas dedusting, desulfurizing and denitrating treatment device according to claim 1, characterized in that, The inner disc (42) is fixedly installed with a guide rod (421), the guide rod (421) is slidably arranged in the inner disc (42), and the top end of the guide rod (421) is fixedly installed with a baffle (422) located above the outer ring (41).

3. The industrial flue gas dedusting, desulfurizing and denitrating treatment device according to claim 2, characterized in that, The inside of the vertical cylinder (30) is fixedly installed with a support (33), the support (33) is rotatably assembled with a reciprocating screw (61), and the outside of the reciprocating screw (61) is provided with a sliding sleeve (62) fixedly connected with the inner disc (42), which can reciprocally slide along the axial direction of the reciprocating screw (61) with the rotation of the reciprocating screw (61).

4. The industrial flue gas dedusting, desulfurizing and denitrating treatment device according to claim 3, characterized in that, The bottom end of the reciprocating screw (61) is fixedly installed with a gear (83), the inner bottom wall of the tank body (10) is rotatably assembled with a rotating disc (81), the rotating disc (81) is coaxially fixedly installed with a gear ring (82) engaged with the gear (83), and the bottom of the tank body (10) is fixedly installed with a motor (84) for driving the rotating disc (81) to rotate.

5. The industrial flue gas dedusting, desulfurizing and denitrating treatment device according to claim 4, characterized in that, The inside of the connector (71) is coaxially fixedly installed with an annular plate (712), the middle part of the annular plate (712) is coaxially fixedly installed with an inner tube (713), the bottom end of the inner tube (713) is provided with a tapered head (714) capable of lifting relative to the inner tube (713), and the top of the tapered head (714) is fixedly installed with a sealing block (715) inserted into the inner tube (713).

6. The industrial flue gas dedusting, desulfurizing and denitrating treatment device according to claim 5, characterized in that, The top of the tapered head (714) is provided with an extension (716) extending to the side of the inner tube (713) to form a gas collecting cavity between the tapered head (714) and the outer wall of the inner tube (713), and a spring (718) is arranged between the annular plate (712) and the tapered head (714).

7. The industrial flue gas dedusting, desulfurizing and denitrating treatment device according to claim 6, characterized in that, The inner wall of the vertical cylinder (30) is provided with a limiting groove (34) along the axial direction thereof, a magnet (51) is fixedly installed on the outer ring (41) and slidably arranged in the limiting groove (34), and the outer wall of the vertical cylinder (30) is vertically fixed with an adsorption plate (52) which can be mutually adsorbed with the magnet (51).

8. The industrial flue gas dedusting, desulfurizing and denitrating treatment device according to claim 7, characterized in that, The bottom of the upper partition plate (11) is provided with an annular pipe (141) located in the absorption cavity (14), the bottom of the annular pipe (141) is provided with a spray head (142), one side of the annular pipe (141) is provided with a delivery pump capable of injecting the absorption liquid in the absorption cavity (14) into the annular pipe (141), the top of the upper partition plate (11) and the tank body (10) form an exhaust cavity (15), the top of the tank body (10) is inserted with an exhaust pipe (16) in communication with the exhaust cavity (15), and the inside of the exhaust cavity (15) is provided with an activated carbon filter plate (17) located below the exhaust pipe (16).

9. The industrial flue gas dedusting, desulfurizing and denitrating treatment device according to claim 8, characterized in that, The bottom of the upper partition plate (11) is further rotatably provided with a middle shaft (143) located in the absorption cavity (14), the bottom end of the middle shaft (143) is fixedly installed with a stirring blade (144), the middle shaft (143) is fixedly installed with a mesh plate (145), and the bottom of the mesh plate (145) is fixedly installed with a needle (146).

10. A method for dust removal, desulfurization and denitrification of industrial flue gas, suitable for the dust removal, desulfurization and denitrification device of claim 9, characterized in that, The method comprises the following steps: Step one: the flue gas is introduced into the dust removal box (20) to complete the filtration of the dust in the dust removal box (20); Step two: the dust-removed flue gas enters the inside of the vertical cylinder (30) through the communication pipe (22), and the flue gas passes through the stepped groove (411) to enter the upper side of the outer ring (41) and the inner disc (42); Step three: the reciprocating screw rod (61) rotates and pushes the sliding sleeve (62) to lift the inner disc (42) into the inside of the stepped groove (411), and the outer ring (41) forms a seal with the vertical cylinder (30), and then the outer ring (41) is pushed to overcome the magnetic attraction force to lift and compress the space of the flue gas; Step four: the flue gas pressure increases, enters the joint (71) from the vertical cylinder (30), and is injected into the absorption liquid in the absorption cavity (14) through the exhaust hole (711) in a jet dispersion manner, and the harmful substances in the flue gas are reacted and absorbed by the absorption liquid; Step five: the stirring blade (144) stirs the absorption liquid, and the needle (146) punctures the flue gas bubbles formed in the absorption liquid to make the flue gas more fully contact with the absorption liquid; Step six: the spray head (142) sprays the absorption liquid to further absorb the harmful substances, and then the flue gas is adsorbed and filtered by the activated carbon filter plate (17) and is discharged through the exhaust pipe (16); Step seven: the flue gas injection is completed, the reciprocating screw rod (61) drives the inner disc (42) to descend, the inner disc (42) is separated from the stepped groove (411) to open again, and then the outer ring (41) is driven to descend and reset by the guide rod (421) and the baffle (422), the filling of the flue gas is performed, and after the flue gas pressure is lost, the conical head (714) is lifted and reset by the spring (718) to lift the sealing plate (72), and the plug rod (73) is inserted into the exhaust hole (711).

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