Flue gas dust removal and denitration device

Abstract

The utility model discloses a flue gas dust removal and denitration device, which belongs to the technical field of flue gas dust removal and comprises a denitration cylinder, a liquid spraying mechanism is arranged at the top of the denitration cylinder, and a gas spraying mechanism is arranged at the bottom of the denitration cylinder. According to the flue gas denitration device, flue gas is guided into the dust collecting groove in the filtering inner box through the gas guiding pipe, smoke dust in the flue gas is filtered through the filtering net, the filtered flue gas is guided into the denitration cylinder through the gas guiding pipe, the gathering pipe and other pipelines to be subjected to denitration treatment, and the smoke dust is prevented from entering the denitration cylinder; in addition, smoke drives a wind wheel to rotate when flowing in a vent hole, the wind wheel drives a transmission rod and a scraper to rotate, and the scraper scrapes a filtering surface of a filter screen, so that smoke filtered by the filter screen falls to the bottom of an inner cavity of a dust collection groove, and the filtering effect of the filter screen is guaranteed. And frequent manual cleaning of smoke dust on the filter screen is avoided, and the practicability of the flue gas dust removal and denitration device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas dust removal technical field more specifically, relate to a flue gas dust removal denitration device. BACKGROUND

[0002] In the process of industrial production, flue gas is often produced, and the flue gas contains smoke dust, nitrogen oxides and the like, and direct emission without treatment will pollute the environment.

[0003] Through the retrieval, the utility model discloses a kind of coal-fired boiler flue gas denitration dust removal integrated device with publication number CN221385637U, it includes barrel, motor is fixedly installed at the right side of barrel top, the output end of motor is fixedly connected with first bevel gear, the inner chamber of barrel is provided with rotary drum, the top of rotary drum is movably penetrated barrel and rotationally connected with pipeline, the outside of rotary drum is fixedly sleeved with second bevel gear, the bottom of rotary drum is fixedly connected with rectangular box, the top of barrel right side is fixedly connected with exhaust pipe, the inner chamber of exhaust pipe is provided with filter plate, the top of filter plate is penetrated exhaust pipe and fixedly connected with cover plate;The patent can disassemble and clean filter plate, avoid dirt and impurities to remain in the device, simple structure, facilitate staff to use, also can make adjusting agent and flue gas fully mix, improve the decomposition efficiency of flue gas, improve the practicability of device.

[0004] But the above patent still has the following deficiencies: after the flue gas is introduced into barrel from inlet pipe for denitration treatment, the smoke dust in flue gas is treated using filter plate, the smoke dust carried in flue gas is easy to adhere to the inner wall of barrel and the surface of spray head, and only the filter plate can be taken out to treat the smoke dust and impurities on the filter plate, so that the smoke dust filtered on the filter plate cannot be automatically cleaned, and the practicability is poor;And the position of flue gas introduced into barrel from inlet pipe is fixed, although the spray head can rotate to adjust the position of sprayed adjusting agent, but the mixing efficiency needs to be improved.Therefore we propose a kind of flue gas dust removal denitration device. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model aims at providing a flue gas dust removal denitration device.

[0006] To solve the above problems, the utility model adopts the following technical scheme:

[0007] The utility model provides a flue gas dust removal denitration device, including the denitration cylinder, the top of denitration cylinder is provided with liquid injection mechanism, the bottom of denitration cylinder is provided with air injection mechanism, the bottom surface of denitration cylinder is fixedly connected with filter outer box, one side of filter outer box is fixedly sleeved with air guide pipe, the other side of filter outer box is fixedly sleeved with gathering pipe, the end of gathering pipe is fixedly connected with air guide pipe, air guide pipe is connected with air injection mechanism, the inner chamber of filter outer box is sleeved with filter inner box, the top surface of filter inner box is equipped with dust collection groove, one side of filter inner box is equipped with air inlet, the other side of filter inner box is provided with air hole, one end of the inner chamber of air hole is fixedly sleeved with filter screen, the end surface of filter screen is flush with the inner wall of dust collection groove, the inner chamber of air hole is fixedly connected with support, the rotatable connection of support is provided with transmission rod, one end of transmission rod extends to the inner chamber of dust collection groove and is fixedly connected with scraper, the end surface of scraper is attached with the end surface of filter screen, the other end of transmission rod is fixedly sleeved with wind wheel.

[0008] As a preferred scheme of the utility model, the air injection mechanism includes a lower rotating pipe rotatably connected to the bottom of the denitration cylinder and a first motor fixedly installed on the bottom surface of the denitration cylinder, the top end of the lower rotating pipe extends into the inner chamber of the denitration cylinder and is fixedly connected with a plurality of air injection pipes, the top surface of each of the air injection pipes is fixedly installed with a plurality of air injection heads, the bottom end of the lower rotating pipe extends to the bottom of the denitration cylinder and is fixedly sleeved with a first rotary joint, the bottom end of the first rotary joint is connected with the air guide pipe, the outer side of the lower rotating pipe is fixedly sleeved with a second bevel gear, the output shaft of the first motor is fixedly sleeved with a first bevel gear, and the first bevel gear and the second bevel gear are in meshing engagement.

[0009] As a preferred scheme of the utility model, the liquid injection mechanism includes a second motor fixedly installed on the top surface of the denitration cylinder and a liquid storage tank fixedly connected to the top of the denitration cylinder, the top surface of the liquid storage tank is fixedly installed with a liquid pumping pump, both ends of the liquid pumping pump are fixedly connected with liquid guide pipes, the end of one of the liquid guide pipes extends into the inner chamber of the liquid storage tank, the end of the other liquid guide pipe is fixedly sleeved with a second rotary joint, the bottom end of the second rotary joint is fixedly sleeved with an upper rotating pipe, the bottom end of the upper rotating pipe extends into the inner chamber of the denitration cylinder and is fixedly connected with a plurality of liquid injection pipes, the bottom surface of each of the liquid injection pipes is fixedly installed with a plurality of nozzles, the upper rotating pipe is rotatably connected to the top of the denitration cylinder, the side of the top end of the upper rotating pipe is fixedly sleeved with a fourth bevel gear, the output shaft of the second motor is fixedly sleeved with a third bevel gear, and the third bevel gear and the fourth bevel gear are in meshing engagement.

[0010] As a preferred scheme of the utility model, the side of the top end of the denitration cylinder is fixedly sleeved with an exhaust pipe, and the bottom surface of the denitration cylinder is fixedly installed with a liquid discharge valve.

[0011] As one preferred scheme of the utility model, one end of the filtering inner box extends to the outside of the filtering outer box and is fixedly connected with a handle.

[0012] As one preferred scheme of the utility model, a hole plug is screw-mounted on the top surface of the liquid storage tank.

[0013] As one preferred scheme of the utility model, the air guide pipe, the gathering pipe, the air inlet hole and the air hole are coaxially arranged.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) In the utility model, the flue gas is guided into the dust collecting groove on the filtering inner box by the air guide pipe, the flue gas is filtered by the filter screen, the filtered flue gas is guided into the denitration cylinder by the air guide pipe, the gathering pipe and other pipelines for denitration treatment, the flue dust is prevented from entering the denitration cylinder, the wind wheel is driven to rotate when the flue gas flows in the air hole, the transmission rod and the scraper are driven to rotate by the wind wheel, the filter surface of the filter screen is scraped by the scraper, the flue dust filtered by the filter screen falls to the bottom of the inner cavity of the dust collecting groove, the filtering effect of the filter screen is ensured, and the flue dust on the filter screen does not need to be cleaned frequently.

[0016] (2) In the utility model, the flue gas after dust removal is uniformly rotated and sprayed to the inner cavity of the denitration cylinder by the air jet head on the liquid spraying mechanism, the reducing agent in the liquid storage tank is sprayed into the inner cavity of the denitration cylinder in the opposite rotating direction of the air jet head by the nozzle on the air jet mechanism, the flue gas and the reducing agent can be fully mixed in the inner cavity of the denitration cylinder, the quality and efficiency of the denitration of the flue gas are ensured, and the practicability of the flue gas dust removal and denitration device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the whole sectional view schematic view of the utility model;

[0019] Figure 3 It is the overhead schematic view of the utility model;

[0020] Figure 4 It is the split schematic view of the filtering outer box and the filtering inner box of the utility model;

[0021] Figure 5 It is the sectional view schematic view of the filtering inner box of the utility model.

[0022] Explanation of reference numerals in the drawing:

[0023] 1, denitration cylinder; 2, liquid injection mechanism; 3, air injection mechanism; 4, filter outer box; 5, air guide pipe; 6, gathering pipe; 7, air guide pipe; 8, filter inner box; 9, dust collecting groove; 10, air hole; 11, air inlet hole; 12, filter screen; 13, support; 14, transmission rod; 15, wind wheel; 16, scraper; 17, handle; 18, first motor; 19, lower rotating pipe; 20, air injection pipe; 21, air injection head; 22, first rotary joint; 23, first bevel gear; 24, second bevel gear; 25, liquid storage tank; 26, second motor; 27, upper rotating pipe; 28, liquid injection pipe; 29, nozzle; 30, second rotary joint; 31, liquid pumping pump; 32, liquid guide pipe; 33, third bevel gear; 34, fourth bevel gear; 35, hole plug; 36, exhaust pipe; 37, liquid discharge valve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Embodiment:

[0028] Please refer to Figures 1-5The utility model relates to a flue gas dust removal and denitration device, including denitration cylinder 1, the top of denitration cylinder 1 is provided with liquid injection mechanism 2, the bottom of denitration cylinder 1 is provided with gas injection mechanism 3, the bottom surface of denitration cylinder 1 is fixedly connected with filter outer box 4, one side of filter outer box 4 is fixedly sleeved with gas guide pipe 5, the other side of filter outer box 4 is fixedly sleeved with gathering pipe 6, the end of gathering pipe 6 is fixedly connected with gas guide pipe 7, and gas guide pipe 7 is connected with gas injection mechanism 3, and the inner chamber of filter outer box 4 is sleeved with filter inner box 8, the top surface of filter inner box 8 is provided with dust collection groove 9, one side of filter inner box 8 is provided with air inlet hole 11, the other side of filter inner box 8 is provided with air hole 10, one end of the inner chamber of air hole 10 is fixedly sleeved with filter screen 12, the end surface of filter screen 12 is flush with the inner wall of dust collection groove 9, the inner chamber of air hole 10 is fixedly connected with support 13, and transmission rod 14 is rotatably connected on support 13, one end of transmission rod 14 extends to the inner chamber of dust collection groove 9 and is fixedly connected with scraper 16, the end surface of scraper 16 is attached to the end surface of filter screen 12, and the other end of transmission rod 14 is fixedly sleeved with wind wheel 15.

[0029] Specifically, refer to Figure 1 And Figure 2 Gas injection mechanism 3 includes lower rotary pipe 19 rotatably connected at the bottom of denitration cylinder 1 and first motor 18 fixedly installed at the bottom surface of denitration cylinder 1, the top end of lower rotary pipe 19 extends to the inner chamber of denitration cylinder 1 and is fixedly connected with a plurality of gas injection pipes 20, a plurality of gas injection heads 21 are fixedly installed at the top surface of a plurality of gas injection pipes 20, the bottom end of lower rotary pipe 19 extends to the bottom of denitration cylinder 1 and is fixedly sleeved with first rotary joint 22, the bottom end of first rotary joint 22 is connected with gas guide pipe 7, second bevel gear 24 is fixedly sleeved with the outer side of lower rotary pipe 19, the output shaft of first motor 18 is fixedly sleeved with first bevel gear 23, and first bevel gear 23 and second bevel gear 24 are meshed with each other.

[0030] Specifically, refer to Figures 1 to 3 Liquid injection mechanism 2 includes second motor 26 fixedly installed at the top surface of denitration cylinder 1 and liquid storage tank 25 fixedly connected at the top surface of denitration cylinder 1, liquid pump 31 is fixedly installed at the top surface of liquid storage tank 25, two ends of liquid pump 31 are fixedly connected with liquid guide pipe 32 respectively, the end of one liquid guide pipe 32 extends to the inner chamber of liquid storage tank 25, the end of another liquid guide pipe 32 is fixedly sleeved with second rotary joint 30, the bottom end of second rotary joint 30 is fixedly sleeved with upper rotary pipe 27, the bottom end of upper rotary pipe 27 extends to the inner chamber of denitration cylinder 1 and is fixedly connected with a plurality of liquid injection pipes 28, a plurality of nozzles 29 are fixedly installed at the bottom surface of a plurality of liquid injection pipes 28 respectively, upper rotary pipe 27 is rotatably connected at the top of denitration cylinder 1, fourth bevel gear 34 is fixedly sleeved with the side of the top end of upper rotary pipe 27, the output shaft of second motor 26 is fixedly sleeved with third bevel gear 33, and third bevel gear 33 and fourth bevel gear 34 are meshed with each other.

[0031] Specifically, refer to Figure 1 and Figure 3 The side of the top end of the denitration cylinder 1 is fixedly sleeved with an exhaust pipe 36, and the bottom surface of the denitration cylinder 1 is fixedly installed with a liquid discharge valve 37.

[0032] In the embodiment, the dust-removing and denitration flue gas is introduced into the subsequent treatment equipment through the exhaust pipe 36, and the residual reducing agent at the bottom of the inner cavity of the denitration cylinder 1 is discharged through the liquid discharge valve 37.

[0033] Specifically, refer to Figure 4 and Figure 5 One end of the filter inner box 8 extends to the outside of the filter outer box 4 and is fixedly connected with a handle 17, and the side surface of the filter inner box 8 is attached to the inner wall of the filter outer box 4.

[0034] In the embodiment, the filter inner box 8 is taken by the handle 17, and the sealing and stability of the filter inner box 8 inserted into the inner cavity of the filter outer box 4 are ensured by the contact between the side surface of the filter inner box 8 and the inner wall of the filter outer box 4.

[0035] Specifically, refer to Figure 3 The top surface of the liquid storage tank 25 is threadedly installed with a hole plug 35.

[0036] In the embodiment, the reducing agent, which can be ammonia water, is added to the inner cavity of the liquid storage tank 25 by removing the hole plug 35.

[0037] Specifically, refer to Figure 1 and Figure 4 The air guide pipe 5, the gathering pipe 6, the air inlet hole 11 and the air vent hole 10 are coaxially arranged.

[0038] In the embodiment, it is ensured that the flue gas in the air guide pipe 5 can sequentially and smoothly pass through the air inlet hole 11, the air vent hole 10 and the gathering pipe 6.

[0039] Working principle: in use, first, through the air pipe 5, the flue gas is introduced into the inner cavity of the dust collecting groove 9, at the same time, the flue gas in the inner cavity of the dust collecting groove 9 passes through the filter screen 12 into the inner cavity of the air hole 10, when the flue gas passes through the filter screen 12, the filter screen 12 filters the dust impurities in the flue gas, in addition, the flue gas flowing in the air hole 10 drives the wind wheel 15 to rotate, the wind wheel 15 drives the transmission rod 14 and the scraper 16 to rotate synchronously, the scraper 16 scrapes off the dust filtered on the filter screen 12, so that the dust is collected at the bottom of the inner cavity of the dust collecting groove 9, thereby ensuring the filtering effect of the filter screen 12, then the flue gas in the air hole 10 enters the inner cavity of the jet pipe 20 from the gathering pipe 6, the air guide pipe 7, the first rotary joint 22 and the lower rotating pipe 19, and is sprayed from the jet head 21 to the inner cavity of the denitration cylinder 1, at the same time, the first motor 18 is started to drive the first bevel gear 23 to rotate, the jet pipe 20 and the jet head 21 are driven to rotate through the meshing transmission between the first bevel gear 23 and the second bevel gear 24, so that the flue gas is uniformly sprayed to the inner cavity of the denitration cylinder 1, then the liquid pump 31 is started to guide the reducing agent in the inner cavity of the liquid storage tank 25 into the inner cavity of the liquid jet pipe 28 through the liquid guide pipe 32, the second rotary joint 30 and the upper rotating pipe 27, and the reducing agent in the liquid jet pipe 28 is sprayed downward from the nozzle 29, at the same time, the second motor 26 is started to drive the third bevel gear 33 to rotate, the upper rotating pipe 27, the liquid jet pipe 28 and the nozzle 29 are driven to rotate in the opposite direction of the lower rotating pipe 19 through the meshing transmission between the third bevel gear 33 and the fourth bevel gear 34, so that the reducing agent sprayed from the nozzle 29 and the flue gas sprayed from the jet head 21 are fully mixed, so as to efficiently denitrate the flue gas, finally, the treated flue gas is introduced into the next processing procedure from the exhaust pipe 36, and after the denitration and dust removal, the filter inner box 8 is pulled out of the filter outer box 4 by holding the handle 17, so as to process the collected dust in the dust collecting groove 9.

[0040] The above merely describes a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A flue gas dedusting and denitration device, comprising a denitration cylinder (1), characterized in that: The top of the denitration cylinder (1) is provided with a liquid injection mechanism (2), the bottom of the denitration cylinder (1) is provided with a gas injection mechanism (3), the bottom surface of the denitration cylinder (1) is fixedly connected with a filter outer box (4), one side of the filter outer box (4) is fixedly sleeved with an air guide pipe (5), the other side of the filter outer box (4) is fixedly sleeved with an aggregation pipe (6), the end of the aggregation pipe (6) is fixedly connected with a gas guide pipe (7), the gas guide pipe (7) is connected with the gas injection mechanism (3), the inner cavity of the filter outer box (4) is sleeved with a filter inner box (8), the top surface of the filter inner box (8) is provided with a dust collection groove (9), one side of the filter inner box (8) is provided with an air inlet hole (11), the other side of the filter inner box (8) is provided with a ventilation hole (10), one end of the inner cavity of the ventilation hole (10) is fixedly sleeved with a filter screen (12), the end surface of the filter screen (12) is flush with the inner wall of the dust collection groove (9), the inner cavity of the ventilation hole (10) is fixedly connected with a support (13), the support (13) is rotatably connected with a transmission rod (14), one end of the transmission rod (14) extends into the inner cavity of the dust collection groove (9) and is fixedly connected with a scraper (16), the end surface of the scraper (16) is attached to the end surface of the filter screen (12), the other end of the transmission rod (14) is fixedly sleeved with a wind wheel (15).

2. The flue gas dedusting and denitration device according to claim 1, characterized in that: The gas injection mechanism (3) comprises a lower rotating pipe (19) rotatably connected to the bottom of the denitration cylinder (1) and a first motor (18) fixedly installed on the bottom surface of the denitration cylinder (1), the top end of the lower rotating pipe (19) extends into the inner cavity of the denitration cylinder (1) and is fixedly connected with a plurality of gas injection pipes (20), the top surface of each of the plurality of gas injection pipes (20) is fixedly installed with a plurality of gas injection heads (21), the bottom end of the lower rotating pipe (19) extends to the bottom of the denitration cylinder (1) and is fixedly sleeved with a first rotary joint (22), the bottom end of the first rotary joint (22) is connected with the gas guide pipe (7), the outer side of the lower rotating pipe (19) is fixedly sleeved with a second bevel gear (24), the output shaft of the first motor (18) is fixedly sleeved with a first bevel gear (23), and the first bevel gear (23) and the second bevel gear (24) are meshed with each other.

3. The flue gas dedusting and denitration device according to claim 2, characterized in that: The liquid spraying mechanism (2) comprises a second motor (26) fixedly installed on the top surface of the denitration cylinder (1) and a liquid storage tank (25) fixedly connected to the top surface of the denitration cylinder (1), the top surface of the liquid storage tank (25) is fixedly installed with a liquid pumping pump (31), both ends of the liquid pumping pump (31) are fixedly connected with liquid guide pipes (32), the end of one liquid guide pipe (32) extends into the inner cavity of the liquid storage tank (25), the end of the other liquid guide pipe (32) is fixedly sleeved with a second rotary joint (30), the bottom end of the second rotary joint (30) is fixedly sleeved with an upper rotating pipe (27), the bottom end of the upper rotating pipe (27) extends into the inner cavity of the denitration cylinder (1) and is fixedly connected with a plurality of liquid spraying pipes (28), the bottom surface of each liquid spraying pipe (28) is fixedly installed with a plurality of nozzles (29), the upper rotating pipe (27) is rotatably connected to the top of the denitration cylinder (1), the side of the top end of the upper rotating pipe (27) is fixedly sleeved with a fourth bevel gear (34), the output shaft of the second motor (26) is fixedly sleeved with a third bevel gear (33), and the third bevel gear (33) and the fourth bevel gear (34) are in meshing engagement.

4. The flue gas dedusting and denitration device according to claim 1, characterized in that: The side of the top end of the denitration cylinder (1) is fixedly sleeved with an exhaust pipe (36), and the bottom surface of the denitration cylinder (1) is fixedly installed with a liquid discharge valve (37).

5. The flue gas dedusting and denitration device according to claim 1, characterized in that: One end of the filter inner box (8) extends to the outside of the filter outer box (4) and is fixedly connected with a handle (17), and the side surface of the filter inner box (8) is attached to the inner wall of the filter outer box (4).

6. The flue gas dedusting and denitration device according to claim 3, characterized in that: The top surface of the liquid storage tank (25) is threadedly installed with a hole plug (35).

7. The flue gas dedusting and denitration device according to claim 1, characterized in that: The bleed air pipe (5), the gathering pipe (6), the air inlet hole (11) and the air vent hole (10) are coaxially arranged. The top surface of the liquid storage tank (25) is threadedly installed with a hole plug (35).

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