Desulfurization, denitration and smoke exhaust device for environmental protection

Abstract

The utility model relates to the technical field of flue gas treatment in environment protection, and discloses an environment-friendly desulfurization and denitrification smoke exhaust device which comprises a tower body, a smoke conveying pipeline communicated with the interior of the tower body is arranged on the tower body, a supporting disc is arranged in the tower body above the smoke conveying pipeline, a plurality of through holes are formed in the supporting disc in a penetrating mode, and the through holes are communicated with the tower body. A plurality of through holes are formed in the supporting disc, a guide cylinder is arranged in each through hole, the guide cylinders penetrate through the through holes, a plurality of guide holes are formed in the side wall of each guide cylinder at intervals, and the bottom end of each guide hole is higher than the top surface of the supporting disc; a flow collecting cavity is formed in the supporting disc, a discharging hole communicating with the flow collecting cavity is formed in the top end of the supporting disc, and a discharging pipeline communicating with the interior of the flow collecting cavity is arranged at the bottom of the supporting disc in a communicating mode; according to the flue gas flow guide device, the flue gas flow guide effect can be achieved, impact hindering cannot be caused to rising of the flue gas, normal flue gas treatment work is guaranteed, and the working efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment in environmental protection, in particular to a desulfurization and denitrification smoke exhaust device for environmental protection. Background Art

[0002] A large amount of flue gas is generated during the combustion of factory boilers, and the flue gas usually contains compounds containing sulfur and nitrate, which need to be treated with desulfurization and denitrification before being discharged to avoid direct emission and pollution to the atmosphere. In existing operations, a spray head is usually set in the tower body, and the desulfurization and denitrification liquid is used to contact the flue gas by spraying to purify the flue gas; and in the process of the flue gas moving from bottom to top in the tower body, due to the lack of corresponding diversion structure, the flue gas will rise in a mass, and it is difficult to fully contact with the sprayed liquid for reaction, and there is an incomplete reaction; for this reason, a mesh plate is set in the tower body in the existing technology to achieve the purpose of breaking up and diverting the flue gas.

[0003] Although the mesh plate can solve the above problems to a certain extent, the spray liquid will fall straight down along the mesh diameter of the mesh plate after the reaction with the flue gas. Since the relevant components in the spray liquid have been consumed by the reaction at this time, it will not only be difficult to produce beneficial effects when it contacts the flue gas below, but it will also have a greater impact on the flue gas rising below the mesh plate, hindering the entire flue gas treatment work. Therefore, there is an urgent need for an environmentally friendly desulfurization and denitrification smoke exhaust device that can both guide the flue gas and not cause impact and obstruction to the rising of the flue gas. Utility Model Content

[0004] The purpose of the utility model is to provide an environmentally friendly desulfurization and denitrification smoke exhaust device, which can not only achieve the function of guiding the flue gas, but also will not cause impact obstruction to the rising of the flue gas, thereby ensuring the normal progress of the flue gas treatment work and ensuring work efficiency.

[0005] The utility model adopts the following technical solutions:

[0006] A desulfurization and denitrification smoke exhaust device for environmental protection comprises a tower body, a spray head connected to a spray liquid is arranged at the top of the tower body, a discharge port is arranged at the bottom of the tower body, a smoke conveying pipe connected to the inside of the tower body is arranged on the tower body on one side above the discharge port, a support plate is arranged inside the tower body above the smoke conveying pipe, a plurality of through holes are penetrated on the support plate, a guide tube is arranged in each of the through holes, the guide tube passes through the through holes, wherein a plurality of guide holes are arranged at intervals on the side wall of each of the guide tubes, and the bottom end of each of the guide holes is higher than the top surface of the support plate; a collecting chamber is arranged inside the support plate, a discharge hole connected to the collecting chamber is arranged at the top of the support plate, a discharge pipe connected to the inside of the collecting chamber is arranged at the bottom of the support plate, and the discharge pipe extends to the discharge port lowered by the tower body.

[0007] Preferably, a filter screen is arranged in each of the guide holes.

[0008] Preferably, a conical guide seat is provided at the top of the guide tube.

[0009] Preferably, a collecting groove is provided at the bottom of the collecting cavity, and one end of the discharge pipe is provided in the collecting groove.

[0010] Preferably, the discharge pipe is connected to the manifold through a water pump, and the water pump is arranged outside the tower body; the outlet end of the water pump is connected to the discharge pipe through a tee, and the tee is connected with a cleaning pipe, and the cleaning pipe is connected with a cleaning rack, and the cleaning rack is arranged at the bottom end of the support plate, and the cleaning rack is provided with spray pipes of the same number as the guide tube, and the spray pipe is provided with a nozzle opened toward the filter; wherein the discharge pipe and the cleaning pipe are both provided with solenoid valves.

[0011] Preferably, the cleaning rack comprises a plurality of guide rings which are coaxially arranged and have successively decreasing diameters, and the guide rings are connected to each other in pairs.

[0012] Preferably, the bottom circumference of the support plate extends downward to form an annular mounting flange, and the guide ring located at the outermost part is detachably connected to the mounting flange.

[0013] Preferably, the nozzle is arranged obliquely relative to the filter screen.

[0014] Preferably, a sealing gasket is provided at the connection between the guide tube and the through hole.

[0015] Preferably, the smoke conveying pipe is arranged to be inclined downward.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model can divide the interior of the tower into two upper and lower spaces by setting a support plate, and utilizes a guide tube set thereon to provide guidance for the flue gas, so that the flue gas can flow upward evenly, ensuring sufficient contact between the flue gas and the spray liquid, and improving the effect of desulfurization and denitrification; the setting of the discharge holes and the collecting chamber on the support plate helps the liquid after the reaction with the flue gas to enter the collecting chamber through the discharge holes, and the liquid is drained and discharged to the discharge port at the bottom of the tower body by the discharge pipe, avoiding the impact of the direct fall of the liquid on the rising flue gas below, ensuring the normal progress of the flue gas treatment work, and ensuring work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0018] Figure 2This is a schematic diagram of the structure of the support plate of an embodiment of the present application;

[0019] Figure 3 A cross-sectional view of a support plate according to an embodiment of the present application;

[0020] Figure 4 This is a bottom view of the support plate according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the present invention in conjunction with the accompanying drawings and embodiments:

[0022] like Figures 1 to 4 As shown, the utility model describes an environmentally friendly desulfurization and denitrification smoke exhaust device, comprising a tower body 1, a spray head is arranged at the top of the tower body 1, the spray head is connected to a liquid infusion pipe 2 arranged at one side of the tower body 1, and the liquid infusion pipe 2 is communicated with a container containing spray liquid; a discharge port 3 is arranged at the bottom of the tower body 1, which is used for discharging the liquid after the reaction and cleaning and discharging other dirt inside the tower body 1, a valve is arranged at the discharge port 3, and a smoke conveying pipe 4 communicated with the interior is arranged on the tower body 1 on one side above the discharge port 3, and the smoke conveying pipe 4 is preferably arranged at an angle, that is, the opening is arranged obliquely upward relative to the tower body 1 to avoid subsequent waste liquid and dirt backflow; in addition, a wire mesh demister is also arranged above the spray head inside the tower body 1 to remove liquid entrained in the gas to ensure that the smoke is discharged up to standard from the top of the tower body 1.

[0023] A support plate 5 is provided inside the tower body above the smoke conveying pipe 4. The outer diameter of the support plate 5 matches the inner diameter of the tower body 1, and is used to divide the interior of the tower body 1 into two upper and lower spaces, so as to achieve barrier separation between waste liquid and rising flue gas, and prevent the waste liquid from falling through the support plate 5 and causing impact obstruction to the rising flue gas; a plurality of through holes 6 are penetrated on the support plate 5, and a guide tube 7 is provided in each through hole 6. The guide tube 7 is preferably detachably connected to the support plate 5 so as to carry out subsequent targeted replacement and maintenance to reduce the maintenance cost; the guide tube 7 is provided through the through hole 6, and its top end extends to the top of the support plate 5. A sealing gasket is provided at the position where the guide tube 7 is connected to the through hole 6 to ensure the tightness of the connection between the guide tube 7 and the through hole 6; wherein a plurality of guide holes 8 are arranged at intervals on the side wall of each guide tube 7 so that the smoke can be discharged from the bottom of the guide tube 7 The waste liquid enters the guide tube 7 and is evenly discharged along the guide hole 8, so as to achieve full contact with the spray liquid and ensure the desulfurization and denitrification reaction effect; wherein the bottom end of each guide hole 8 is higher than the top surface of the support plate 5, so as to reserve a certain space for the flow of waste liquid, and avoid the waste liquid after the reaction with the flue gas from entering the guide tube 7 through the guide hole 8 and being discharged along the bottom of the guide tube 7; a manifold is arranged inside the support plate 5, a discharge hole 9 communicated with the manifold is arranged at the top of the support plate 5, a discharge pipe 10 communicated with the inside of the manifold is arranged at the bottom of the support plate 5, and the discharge pipe 10 extends to the discharge port 3 placed under the tower body; the waste liquid after the reaction with the flue gas falls to the surface of the support plate 5, enters the manifold through the discharge hole 9, and is discharged through the discharge pipe 10 communicated with the manifold, without contacting the flue gas below the support plate 5, thereby ensuring the stable upward flow of the flue gas to be treated.

[0024] Furthermore, a filter screen 11 is provided in each guide hole 8, which can not only further disperse the smoke to achieve full contact with the spray liquid, but also filter and intercept the solid particles entrained in the smoke to ensure that the smoke meets the emission standards. In addition, in this embodiment, a conical guide seat 12 is provided at the top of the guide tube 7 to help the waste liquid fall and prevent the waste liquid from accumulating at the top of the guide tube 7; in addition, in this embodiment, a collecting groove 13 is also provided at the bottom of the manifold, and one end of the discharge pipe 10 is provided in the collecting groove 13. The setting of the collecting groove 13 helps to quickly collect and discharge the waste liquid.

[0025] Furthermore, in this embodiment, the discharge pipe 10 is connected to the manifold through a water pump 14, and the water pump 14 is arranged outside the tower body 1; the outlet end of the water pump 14 is connected to the discharge pipe 10 through a tee 15, and the tee 15 is connected to a cleaning pipe 17, and the cleaning pipe 17 is connected to a cleaning rack, which is arranged at the bottom end of the support plate 5, and the cleaning rack is provided with a spray pipe with the same number as the guide tube 7, and the spray pipe is provided with a nozzle opened toward the filter screen 11, and the nozzle is preferably arranged obliquely relative to the filter screen 11, so as to use the oblique impact force to smoothly clean and drop the dust; wherein the discharge pipe 10 and the cleaning pipe 17 are connected to the cleaning pipe 17, and the cleaning pipe 17 is connected to the cleaning rack, and the cleaning rack is provided with a cleaning pipe. Solenoid valves are provided; the provision of the water pump 14 is conducive to the centralized and rapid discharge of waste liquid, and also helps to cooperate with the cleaning rack to use the collected waste liquid to spray and clean the filter 11, so as to remove the dust blocking the filter 11 and ensure the smooth flow of smoke; when it is necessary to clean the filter 11, the water pump 14 is turned on to close the solenoid valve provided on the discharge pipe 10, and the solenoid valve on the cleaning pipe 17 is opened to allow the waste liquid to enter the cleaning rack; when it is necessary to discharge the waste liquid directly, the solenoid valve on the cleaning pipe 17 is closed, and the solenoid valve on the discharge pipe 10 is opened. The operation is simple and quick, and the practicability is strong.

[0026] Specifically, in this embodiment, the cleaning rack includes a plurality of coaxially arranged guide rings 16 with successively decreasing diameters, and the guide rings 16 are connected to each other. The bottom periphery of the support plate 5 extends downward to form an annular mounting flange, and the guide ring 16 located at the outermost part is detachably connected to the mounting flange through a mounting rod.

[0027] When the utility model is in use, the interior of the tower body 1 is divided into two spaces, one above the other, by the setting of the support plate 5. The guide tube 7 arranged thereon can provide guide for the flue gas, so that the flue gas flows upward uniformly, ensuring the full contact between the flue gas and the spray liquid, and improving the effect of desulfurization and denitrification; the setting of the discharge hole 9 and the manifold on the support plate 5 helps the liquid after reacting with the flue gas to enter the manifold from the discharge hole 9, and the discharge pipe 10 drains the liquid to the discharge port 3 at the bottom of the tower body 1, avoiding the impact of the direct fall of the liquid on the rising flue gas below, ensuring the normal progress of the flue gas treatment work, and ensuring the work efficiency; when it is necessary to clean the filter 11 in the guide hole 8, start the water pump 14 to close the solenoid valve arranged on the discharge pipe 10, open the solenoid valve on the cleaning pipe 17, and let the waste liquid enter the cleaning rack, the whole operation is simple and fast, and resources are saved at the same time. The flue gas treatment cost is reduced, the structure is simple, and the practicality is strong.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An environmentally friendly desulfurization and denitrification smoke exhaust device, comprising a tower body, a spray head connected to the spray liquid is arranged at the top of the tower body, a discharge port is arranged at the bottom of the tower body, and a smoke conveying pipe connected to the inside of the tower body is arranged on the tower body above the discharge port, characterized in that: A support plate is arranged inside the tower body above the smoke conveying pipe, and a plurality of through holes are penetrated on the support plate, and a guide tube is arranged in each of the through holes, and the guide tube passes through the through holes, wherein a plurality of guide holes are arranged at intervals on the side wall of each guide tube, and the bottom end of each guide hole is higher than the top surface of the support plate; a collecting cavity is arranged inside the support plate, and a discharge hole communicated with the collecting cavity is arranged at the top of the support plate, and a discharge pipe communicated with the inside of the collecting cavity is arranged at the bottom of the support plate, and the discharge pipe extends to the discharge port lowered by the tower body.

2. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 1 is characterized in that: A filter screen is arranged in each of the guide holes.

3. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 1 is characterized in that: The top of the guide tube is provided with a conical guide seat.

4. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 1 is characterized in that: A collecting groove is arranged at the bottom of the collecting cavity, and one end of the discharge pipe is arranged in the collecting groove.

5. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 2 is characterized in that: The discharge pipe is connected to the manifold through a water pump, and the water pump is arranged outside the tower body; the outlet end of the water pump is connected to the discharge pipe through a tee, and the tee is connected with a cleaning pipe, and the cleaning pipe is connected with a cleaning rack, which is arranged at the bottom end of the support plate, and the cleaning rack is provided with spray pipes with the same number as the guide tube, and the spray pipe is provided with a nozzle opened toward the filter; wherein the discharge pipe and the cleaning pipe are both provided with solenoid valves.

6. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 5 is characterized in that: The cleaning rack comprises a plurality of guide rings which are coaxially arranged and have successively decreasing diameters, and the guide rings are connected to each other.

7. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 6 is characterized in that: The bottom periphery of the support plate extends downward to form an annular mounting flange, and the guide ring located at the outermost portion is detachably connected to the mounting flange.

8. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 5 is characterized in that: The nozzle is arranged obliquely relative to the filter screen.

9. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 1, characterized in that: A sealing gasket is provided at the connection between the guide tube and the through hole.

10. The environmental protection desulfurization and denitrification smoke exhaust device according to claim 1, characterized in that: The smoke conveying pipe is arranged to be inclined downward.

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