Mixed flow demisting and dedusting mechanism

Abstract

A spraying dust removal pipe system is arranged in a dust removal tower, a plurality of transverse air pipes are contained at the upper end of the dust removal tower, one end of each transverse air pipe is communicated with the atmosphere outside one side of the dust removal tower, and the other end of each transverse air pipe is communicated with an exhaust fan through an end barrel, so that normal-temperature air outside the dust removal tower can pass through the transverse air pipes; the airflow direction of the transverse air pipes is suitable for intersecting with the tail gas rising direction, and airflow of the transverse air pipes is suitable for forming heat exchange with the tail gas in a mixed flow effect. Compared with the prior art, clean water vapor of the purified tail gas can be recycled, the purified tail gas is discharged after being condensed and dewatered, fog flow is prevented from being formed at the upper end of the top exhaust chimney, and misunderstanding of common people is avoided.

Description

Technical Field

[0001] The utility model relates to tail gas treatment, in particular to a mixed flow demisting and dust removing mechanism. Background Art

[0002] In the production of wood chips, hot smoke is used to drum dry the wood chips. After the exhaust gas is sprayed for dust removal, the final exhaust gas discharged from the chimney on the top of the tower still contains a certain amount of heat and water vapor.

[0003] The hot steam discharged from the chimney is naturally condensed to form a mist flow, which is often misunderstood by ordinary people as thick smoke, greatly affecting the image of the company. Utility Model Content

[0004] The utility model aims to solve at least one of the above-mentioned technical problems and provides a mixed flow demisting and dust removing mechanism, in which the purified exhaust gas is condensed in advance in the dust removal tower to recover its water vapor and possible residual dust particles.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A mixed flow mist removal and dust removal mechanism comprises a dust removal tower and a mixed flow condensing pipe system. The dust removal tower is provided with a smoke inlet and a top exhaust chimney. A spray dust removal pipe system is arranged in the dust removal tower. The mixed flow condensing pipe system comprises a plurality of transverse air pipes, an end tube and an exhaust fan. The plurality of transverse air pipes are accommodated at the upper end of the dust removal tower, and one end of the transverse air pipes is connected to the atmosphere outside one side of the dust removal tower, and the other end is connected to the exhaust fan through the end tube, so that normal temperature air outside the dust removal tower can pass through the transverse air pipes. The airflow direction of the plurality of transverse air pipes is suitable for intersecting with the upward direction of the exhaust gas, and the airflow of the transverse air pipes is suitable for forming a mixed flow effect heat exchange with the exhaust gas.

[0007] Compared with the prior art, the beneficial effects of the present application include: the cleaner water vapor in the purified exhaust gas can be recycled and reused, the purified exhaust gas is condensed and dehydrated before being discharged, thus avoiding the formation of mist flow at the top of the top exhaust chimney and avoiding misunderstanding by the general public.

[0008] As an improvement of the above technical solution, one end of the multiple horizontal air pipes is fixed to a mounting block, and the other end is fixed to the end tube. The mounting block and the end tube are respectively supported on two side walls of the dust removal tower, and the end tube is suitable for exhausting air to the atmosphere.

[0009] As an improvement of the above technical solution, the mixed flow condensation pipe system also includes an air suction hood, the exhaust fan is arranged on the air suction hood, and the air suction hood is suitable for docking with the end tube.

[0010] As an improvement of the above technical solution, the mixed flow condensation pipe system also includes a thrust end cover, the mounting block is screwed to the thrust end cover, the end tube is integrally formed with a thrust flange, the multiple horizontal air pipes are suitable for being inserted into the dust removal tower together with the mounting block, and the thrust end cover and the thrust flange are suitable for clamping the dust removal tower together.

[0011] As an improvement of the above technical solution, a second liquid collecting hopper is arranged below the mixed flow condensation pipe system, a pair of side walls of the second liquid collecting hopper are suitable for vertical plates or inclined plates, and the other pair of side walls are both stepped structures, and the adjacent steps of the stepped structure are distributed at intervals and partially overlapped in the upper and lower directions. A collecting trough is arranged at the cone tip of the second liquid collecting hopper, and the second liquid collecting hopper is suitable for collecting condensate dripping from the horizontal air pipe.

[0012] As an improvement of the above technical solution, the dust removal tower includes a tower body, a top cover and a top exhaust chimney arranged on the top cover. The top of the tower body is open and suitable for disassembling and assembling the second liquid collecting hopper.

[0013] As an improvement of the above technical solution, the mixed flow condensation pipe system also includes a vertical pipe, the lower end of the vertical pipe is connected to the horizontal air pipe, and the other end is connected to the end tube, the exhaust fan is arranged at the end tube, the lower port of the top exhaust chimney is spaced apart from the end tube, and the end tube is suitable for blowing air toward the top exhaust chimney.

[0014] As an improvement of the above technical solution, a negative pressure suction hole is opened at the upper end of the vertical tube.

[0015] As an improvement of the above technical solution, the front and rear ends of the mixed flow condensation pipe system are supported on the built-in crossbeam of the dust removal tower. The dust removal tower includes a tower body, a top cover and a top exhaust chimney arranged on the top cover. The top of the tower body is open, and the top of the tower body is suitable for disassembling and assembling the mixed flow condensation pipe system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 It is a schematic diagram of the structure of the dust removal device of an embodiment of the utility model, which covers a mixed flow mist removal and dust removal mechanism;

[0018] Figure 2 for Figure 1 A cross-sectional view showing a dust removal device;

[0019] Figure 3 for Figure 1 An exploded view of the dust removal device is shown;

[0020] Figure 4This is another example schematic diagram of the mixed flow demisting and dust removal mechanism of the embodiment of the utility model.

[0021] The accompanying drawings are only one specific embodiment of the present invention, and the form and structure of this specific embodiment should not limit the expansion of other embodiments.

[0022] Dust removal tower 100, tower body 110, smoke inlet 111, sewage outlet 112, particulate material supply port 113, particulate material outlet 114, first maintenance window 115, second maintenance window 116, top cover 120, top exhaust chimney 130, inclined platform 140;

[0023] Gas mesh plate 200;

[0024] Spray dust removal pipe system 300;

[0025] Demisting dust filter plate 400;

[0026] A spray mist pipe system 510 and a first liquid collecting hopper 520;

[0027] Electrostatic dust removal plate system 610, outer frame 611, cathode plate 612, anode plate 613, spray flushing pipe system 620;

[0028] Mixed flow condensing pipe system 700, horizontal air pipe 710, end tube 720, exhaust fan 730, suction hood 740, thrust end cover 750, vertical pipe 760, mounting block 770;

[0029] The second set of liquid bucket 800. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figures 2 to 4The utility model provides a mixed flow mist removal and dust removal mechanism, including a dust removal tower 100 and a mixed flow mist condensing pipe system 700. A smoke inlet 111 is arranged at the lower end of the dust removal tower 100, and a top exhaust chimney 130 is arranged at the upper end. A spray dust removal pipe system 300 is arranged in the dust removal tower 100. The mixed flow mist condensing pipe system 700 includes a plurality of transverse air pipes 710, an end tube 720 and an exhaust fan 730. The plurality of transverse air pipes 710 are accommodated at the upper end of the dust removal tower 100, and one end is connected to the atmosphere outside one side of the dust removal tower 100, and the other end is connected to the exhaust fan 730 through the end tube 720, so that the normal temperature air outside the dust removal tower 100 can pass through the transverse air pipe 710. The airflow direction of the plurality of transverse air pipes 710 is suitable for intersecting with the upward direction of the exhaust gas, and the airflow of the transverse air pipe 710 is suitable for forming a mixed flow effect heat exchange with the exhaust gas.

[0032] Reference Figure 2 , Figure 3 It can be understood that a smoke inlet 111 is provided at the lower end of the dust removal tower 100 , a sewage discharge port 112 is provided at the lower end of the dust removal tower 100 which is lower than the smoke inlet 111 , and a top exhaust chimney 130 is provided at the dust removal tower 100 .

[0033] Reference Figure 2 , Figure 3 The spray dust removal pipe system 300 includes a plurality of horizontal water pipes and a plurality of nozzles connected to the horizontal water pipes. The horizontal water pipes are connected to the water tank through corresponding water pumps. During the spray dust removal, a space for spraying water mist and water splashes can be formed below the spray dust removal pipe system 300. It can be understood that according to the requirements of water mist and water splashes, atomizing nozzles and sprinkler heads are configured; atomizing nozzles and sprinkler heads are conventional knowledge, such as commonly used nozzles for agricultural and forestry sprinkler irrigation and fire sprinkler heads.

[0034] The space below the spray pipe is filled with water mist without dead corners. The tail smoke is directed upward against the water mist and / or against the water splash. The dust particles mixed with water settle based on their own weight and / or are knocked down by the water splash. Most of the dust particles in the tail smoke are initially filtered out by the water mist and water splash. 70%-85% of the dust particles in the tail smoke are mixed with water and settle, including 95%-98% of the large dust particles.

[0035] Reference Figure 2 , Figure 3In some settings, the dust removal tower 100 is also provided with an electrostatic dust removal plate system 610. The dust removal tower 100 is sequentially provided with a spray dust removal pipe system 300, an electrostatic dust removal plate system 610 and a mixed flow condensation pipe system 700 from bottom to top, so that the inner chamber of the dust removal tower 100 is divided into a plurality of chambers arranged in the up and down directions. The tail smoke discharged into the dust removal tower 100 can sequentially undergo the spray dust removal of the spray dust removal pipe system 300, the electrostatic dust removal of the electrostatic dust removal plate system 610 and the condensation dust reduction of the mixed flow condensation pipe system 700. The electrostatic dust removal plate system 610 includes a plurality of cathode plates 612 and a plurality of anode plates 613, and even includes an outer frame 611. The outer frame 611 can be made of insulating materials such as epoxy resin. The cathode plates 612 and the anode plates 613 are arranged alternately. A narrow air passage filled with water mist and dust particles is formed between the anode plates 613 and the cathode plates 612, and the dust particles have been fully wetted in advance. The cathode plates 612 and the anode plates 613 are energized, so that 90%-95% of the dust particles in the narrow air passage are charged and adsorbed to the anode plates 613 (i.e., 14%-27% of the dust particles in the original tail smoke are filtered out). The dust particles in the wet tail gas after spraying and dust removal are suitable for being fully and quickly charged to be adsorbed to the anode plates 613. Specifically, when the exhaust gas passes through the high-voltage electrostatic field, the air molecules in the strong electric field (i.e., in the narrow air channel) are ionized into positive ions and electrons. The electrons encounter dust particles when rushing to the anode plate 613, causing the dust particles to be negatively charged and adsorbed to the anode plate 613 for collection. The strong electric field (i.e., in the narrow air channel / between-plate gap) is a humid space. The electrons obtained by the separation of air molecules fully and quickly bond with the wet dust particles in the space filled with water mist and dust particles. The dust particles are more quickly adsorbed to the anode plate 613 due to their hygroscopicity and charge.

[0036] The existing conventional spray dust removal rate is about 70%-80%, and the conventional electrostatic dust removal rate is about 80%-90%, which is difficult to improve in the industry. The utility model is based on the water mist filling scene formed by the spray pipe system. It first sprays to remove large dust particles and most dust particles, and then removes the dust particles that have been fully wetted in the humid space by electrostatic. Compared with the conventional combination of spray dust removal and electrostatic dust removal, the dust removal rate is synergistically and substantially improved from the details of atomization sedimentation and rising process to wet dust in advance and electrostatic details of the humid filling space.

[0037] The operation process of the utility model is as follows: inside the dust removal tower 100, water vapor derived from the spray dust removal pipe system 300 and other components may be carried to the top of the tower, and the upward direction of the exhaust gas intersects with the airflow direction of multiple horizontal air pipes 710. The airflow of the horizontal air pipes 710 is suitable for heat exchange with the exhaust gas. The water vapor in the exhaust gas is condensed through heat exchange, and the dust particles carried by the water vapor settle with the condensed water liquid. The condensed water liquid drips downward through the horizontal air pipes 710; the air output by the horizontal air pipes 710 is mixed into the top exhaust chimney 130 or directly returned to the atmosphere.

[0038] Compared with the prior art, the beneficial effects of the present application include: the cleaner water vapor in the purified exhaust gas can be recycled and reused, the purified exhaust gas is discharged after condensation and dehydration, and the formation of mist flow at the top of the top exhaust chimney 130 is avoided, thereby avoiding misunderstanding by the general public.

[0039] In some configurations, the end tube 720 of the mixed flow condensing pipe system 700 does not exhaust air to the top exhaust chimney 130, and the horizontal air pipe 710 of the mixed flow condensing pipe system 700 inhales external air and directly discharges it back to the atmosphere. Figures 1 to 3 One end of multiple horizontal air pipes 710 is fixed to a mounting block 770, and the other end is fixed to an end tube 720. The mounting block 770 and the end tube 720 are respectively supported on two side walls (such as left and right side walls, front and back side walls) of the dust removal tower 100, and the end tube 720 is suitable for exhausting to the atmosphere.

[0040] Reference Figures 1 to 3 Preferably, the mixed flow condensing pipe system 700 further includes an air suction hood 740 , the exhaust fan 730 is disposed in the air suction hood 740 , and the air suction hood 740 is suitable for docking with the end tube 720 .

[0041] Reference Figures 1 to 3 Better yet, the mixed flow condensing pipe system 700 also includes a thrust end cover 750, a mounting block 770 is screwed to the thrust end cover 750, an end tube 720 is integrally formed with a thrust flange, a plurality of transverse air pipes 710 are suitable for being inserted into the dust removal tower 100 together with the mounting block 770, and the thrust end cover 750 and the thrust flange are suitable for clamping the dust removal tower 100 together, so that the mixed flow condensing pipe system 700 is fixedly installed.

[0042] Reference Figure 2 , Figure 3 In some embodiments of the utility model, a second liquid collecting hopper 800 is arranged below the mixed flow condensing pipe system 700, a pair of side walls of the second liquid collecting hopper 800 are suitable for vertical plates or inclined plates, and the other pair of side walls are both stepped structures, and the adjacent two steps of the stepped structure are distributed at intervals and partially overlapped in the upper and lower directions. A collecting trough is arranged at the cone tip (i.e., the bottom) of the second liquid collecting hopper 800, and the second liquid collecting hopper 800 is suitable for collecting condensate dripping from the horizontal air pipe 710.

[0043] Reference Figures 1 to 3 Preferably, the dust removal tower 100 includes a tower body 110, a top cover 120 and an exhaust chimney 130 arranged on the top of the top cover 120. The top of the tower body 110 is open, the mixed flow condensation pipe system 700 is installed in a horizontal insertion manner, and the top of the tower body 110 is suitable for disassembling and assembling the second liquid collecting hopper 800.

[0044] The top cover 120 may reserve a platform for installing a high-voltage electric box, which is suitable for providing working power to the electrostatic precipitator panel system 610 .

[0045] Furthermore, the second liquid collecting hopper 800 and the spray flushing pipe system 620 are supported at both front and rear ends by built-in cross beams of the dust removal tower 100 , and the top of the tower body 110 is also suitable for disassembling and assembling the spray flushing pipe system 620 .

[0046] In some configurations, the end tube 720 of the mixed flow mist condensing pipe system 700 exhausts air to the lower end of the top exhaust chimney 130, and the horizontal air pipe 710 of the mixed flow mist condensing pipe system 700 inhales external air, condenses the mist vapor in the dust removal tower 100, mixes it with the condensed and dehumidified purified exhaust gas, and then discharges it together through the top exhaust chimney 130. For details, refer to Figure 4 The mixed flow fog condensation pipe system 700 also includes a vertical pipe 760, the lower end of which is connected to the horizontal air pipe 710, and the other end is connected to the end tube 720. The exhaust fan 730 is arranged at the end tube 720, and the lower port of the top exhaust chimney 130 is arranged at a distance from the end tube 720. The end tube 720 is suitable for blowing air toward the top exhaust chimney 130. The exhaust gas rushes up to the outer wall of the horizontal air pipe 710, and continues to surge up after condensation and degassing (preliminary cooling), and then mixes with air and cools down in the top exhaust chimney 130. In this method, the cooling area of ​​the horizontal air pipe 710 is smaller than that of the aforementioned method. After condensing most of the water vapor in this method, the relatively low-temperature exhaust gas carries the remaining small amount of water vapor, and is discharged by mixing with air and cooling down, which is also not easy to generate fog flow.

[0047] In some arrangements, a negative pressure suction hole is provided at the upper end of the vertical tube 760 .

[0048] In some embodiments of the present invention, the front and rear ends of the mixed flow condensation pipe system 700 are supported by the built-in crossbeams of the dust removal tower 100, and the top opening of the tower body 110 is suitable for disassembling and assembling the mixed flow condensation pipe system 700 and the second liquid collecting hopper 800 thereunder.

[0049] Reference Figure 2 , Figure 3 In some embodiments of the utility model, an air equalizing mesh plate 200 is arranged above the smoke inlet 111. In the spray dust removal, the air equalizing mesh plate 200 is suitable for allowing the tail smoke to be dispersed and homogenized and then flow up to the water mist and splash space below the spray dust removal pipe system 300, so as to avoid the tail smoke only rising based on the smoke inlet 111 locally, and the dust particles in the tail smoke are sprayed and settled more quickly and fully.

[0050] Reference Figure 2 , Figure 3 In some embodiments of the utility model, a granular material layer is contained in the dust removal tower 100, and the granular material layer is suitable for covering the sewage discharge port 112, so that when the sewage discharge port 112 is continuously emptied, the inertial flow of sewage discharge is prevented from disturbing the homogenized upwelling of tail smoke, and a tail smoke dispersion and homogenization space is formed under the air homogenizing mesh plate 200, and the homogenized tail smoke is sprayed and dusted in a larger plane; in addition, the granular material layer simultaneously performs coarse filtration on the sewage, such as wood residue and sawdust.

[0051] According to the size of the sewage outlet 112 and the particle size of the granular material, it is determined whether to use the partition net and the mesh size of the partition net to prevent the granular material from being discharged. The granular material can be quartz sand, activated carbon, etc.

[0052] Reference Figure 2 , Figure 3 In some embodiments of the utility model, a ramp 140 is provided in the dust removal tower 100, and the sewage discharge port 112 is located on one side of the ramp 140 and corresponds to the lower end of the ramp 140. The dust removal tower 100 is provided with a particulate material supply port 113 corresponding to the high end of the ramp 140 and a particulate material discharge port 114 corresponding to the lower end of the ramp 140. The particulate material supply port 113 and the particulate material discharge port 114 are encapsulated with a cover plate. The setting of the ramp 140 not only solves the problem of sufficient discharge of sewage, but also solves the problem of convenience of supply, stacking and discharge of particulate materials in the large vertical tower of the dust removal tower 100. Opening the particulate material discharge port 114 can also better sweep the ramp 140. Better, the lower edge of the particulate material discharge port 114 corresponds to the lower end of the ramp 140, and the upper edge corresponds to the high end of the ramp 140, so that the discharge of particulate materials is smoother and the cleaning of the ramp 140 is more convenient.

[0053] Reference Figures 1 to 3 In some embodiments of the utility model, a first maintenance window 115 is provided on the right wall of the dust removal tower 100, and the lower edge of the first maintenance window 115 corresponds to the air-evening mesh plate 200. The height difference between the air-evening mesh plate 200 and the spray dust removal pipe system 300 is ≥1.1m. The air-evening mesh plate 200 is also suitable as a maintenance platform. The first maintenance window 115 is suitable for maintenance personnel to enter and exit. The front end of the spray dust removal pipe system 300 is suitable for docking with the built-in water supply flange of the dust removal tower 100. The spray dust removal pipe system 300 and the air-evening mesh plate 200 are both supported by the built-in crossbeams of the dust removal tower 100 at both ends. The first maintenance window 115 is also suitable for disassembling and assembling the air-evening mesh plate 200 and the spray dust removal pipe system 300. In the setting of the utility model, the thickness / height of the spray dust removal pipe system 300 and the air distribution mesh plate 200 is relatively small. Combined with the design of the corresponding aforementioned built-in crossbeam, the spray dust removal pipe system 300 and the air distribution mesh plate 200 are both tilted at the front or rear end, and can be moved to the first maintenance window 115, and then enter and exit the first maintenance window 115. A single first maintenance window 115 can be replaced to maintain the spray dust removal pipe system 300 and the air distribution mesh plate 200, etc., reducing the number of maintenance windows. It is understandable that the first maintenance window 115 is encapsulated with a corresponding cover plate.

[0054] Reference Figure 2 , Figure 3In some embodiments of the utility model, the dust removal tower 100 is sequentially provided with a demisting dust filter plate 400 and a re-mist generating pipe system 510 from bottom to top, so that the space between the spray dust removal pipe system 300 and the electrostatic dust removal plate system 610 is divided into three sections. After the spray dust removal, the demisting dust is filtered first, and then the mist is re-generated to overflow the inter-plate gap of the electrostatic dust removal plate system 610. The demisting dust filter plate 400 is suitable for filtering the mist and wet dust particles floating upward from the spray dust removal pipe system 300, and the re-mist generating pipe system 510 is suitable for forming a space for spraying water mist thereunder, so that the inter-plate gap of the electrostatic dust removal plate system 610 overflows the mist.

[0055] It can be understood that the re-spray mist pipe system 510 and the spray flushing pipe system 620 also include a plurality of horizontal water pipes and a plurality of nozzles connected to the horizontal water pipes.

[0056] The demisting dust filter plate 400 includes a filter element, which can be made of natural fiber, artificial fiber, activated carbon, etc. Preferably, the demisting dust filter plate 400 includes a mesh frame, which wraps the filter element.

[0057] Reference Figure 2 , Figure 3 In some embodiments of the utility model, the mist removal dust filter plate 400 is composed of a plurality of sub-plates spliced ​​side by side, and the front and rear ends of each sub-plate are supported by the built-in crossbeam of the dust removal tower 100. The first maintenance window 115 is also suitable for disassembling and assembling the sub-plates. After disassembling the spray dust removal pipe system 300 through the first maintenance window 115, the sub-plates can be disassembled and assembled.

[0058] Reference Figure 2 , Figure 3 In some embodiments of the utility model, a first liquid collecting hopper 520 is arranged between the mist removing dust filter plate 400 and the re-spraying mist pipe system 510. A pair of side walls of the first liquid collecting hopper 520 are suitable for vertical plates or inclined plates, and the other pair of side walls are both stepped structures. The adjacent steps of the stepped structure are distributed at intervals and partially overlapped in the upper and lower directions. A collecting trough is arranged at the cone tip (i.e., the bottom) of the first liquid collecting hopper 520. The first liquid collecting hopper 520 is suitable for collecting the water mist sprinkled by the re-spraying mist pipe system 510, and the water cloth dropped by the steps is suitable for preventing the water mist from passing over the first liquid collecting hopper 520.

[0059] Reference Figures 1 to 3In some embodiments of the present invention, a second maintenance window 116 is provided on the right wall of the dust removal tower 100, the lower edge of the second maintenance window 116 corresponds to the bottom of the electrostatic dust removal plate system 610, the height difference of the second maintenance window 116 is ≥1.5m, the electrostatic dust removal plate system 610 and the first liquid collecting hopper 520 are both built-in crossbeams supported on the dust removal tower 100 at both ends, and the second maintenance window 116 is suitable for disassembling and assembling the electrostatic dust removal plate system 610 and the first liquid collecting hopper 520. In the present invention, the second maintenance window 116 corresponds to the electrostatic dust removal plate system 610, and the electrostatic dust removal plate system 610 can be disassembled and assembled through the second maintenance window 116 in a drawer-like manner. The first liquid collecting hopper 520 itself is bucket-shaped, and its front and rear ends are combined to be the hanging ends, and the second maintenance window 116 is set on the left / right side, and when the first liquid collecting hopper 520 is tipped over, it occupies a small space and is then detached from the second maintenance window 116.

[0060] Reference Figure 2 , Figure 3 In some embodiments of the present invention, a spray flushing pipe system 620 is provided above the electrostatic dust removal plate system 610, and the spray flushing pipe system 620 is suitable for spraying the electrostatic dust removal plate system 610 when the electrostatic dust removal plate system 610 is not powered on. The spray flushing pipe system 620 performs the spraying work, and its nozzle is preferably a water spray type. During electrostatic dust removal, the electrostatic dust removal plate system 610 is intermittently powered on for dust removal and spraying. When the spray flushing pipe system 620 above the electrostatic dust removal plate system 610 sprays liquid to the electrostatic dust removal plate system 610, the electrostatic dust removal plate system 610 stops dust removal.

[0061] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. Any modification or equivalent substitution that does not deviate from the spirit and scope of the utility model shall be included in the scope of the technical solution of the utility model.

Claims

1. A mixed flow demisting and dust removal mechanism, characterized in that: include: A dust removal tower, in which a spray dust removal pipe system is arranged, and the dust removal tower is provided with a smoke inlet and a top exhaust chimney; The mixed flow condensation pipe system includes a plurality of transverse air pipes, end tubes and exhaust fans. The plurality of transverse air pipes are accommodated at the upper end of the dust removal tower, and one end is connected to the atmosphere outside one side of the dust removal tower, and the other end is connected to the exhaust fan through the end tube, so that the normal temperature air outside the dust removal tower can pass through the transverse air pipes. The airflow direction of the plurality of transverse air pipes is suitable for intersecting with the upward direction of the exhaust gas, and the airflow of the transverse air pipes is suitable for forming a mixed flow effect heat exchange with the exhaust gas.

2. The mixed flow demisting and dust removing mechanism according to claim 1, characterized in that: One end of the plurality of transverse air pipes is fixed to a mounting block, and the other end is fixed to the end tube. The mounting block and the end tube are respectively supported on two side walls of the dust removal tower, and the end tube is suitable for exhausting air to the atmosphere.

3. The mixed flow demisting and dust removing mechanism according to claim 2, characterized in that: The mixed flow condensation pipe system also includes an air suction hood, the exhaust fan is arranged on the air suction hood, and the air suction hood is suitable for docking with the end tube.

4. The mixed flow demisting and dust removing mechanism according to claim 2 or 3, characterized in that: The mixed flow condensing pipe system also includes a thrust end cover, the mounting block is screwed to the thrust end cover, the end tube is integrally formed with a thrust flange, the multiple transverse air pipes are suitable for being inserted into the dust removal tower together with the mounting block, and the thrust end cover and the thrust flange are suitable for clamping the dust removal tower together.

5. The mixed flow demisting and dust removing mechanism according to any one of claims 1 to 3, characterized in that: A second liquid collecting hopper is arranged below the mixed flow condensing pipe system, a pair of side walls of the second liquid collecting hopper are suitable for vertical plates or inclined plates, and the other pair of side walls are both stepped structures, the adjacent steps of the stepped structure are distributed at intervals, and part of the upper and lower directions are overlapped, and a collecting trough is arranged at the cone tip of the second liquid collecting hopper, and the second liquid collecting hopper is suitable for collecting condensate dripping from the horizontal air pipe.

6. The mixed flow demisting and dust removing mechanism according to claim 5, characterized in that: The dust removal tower comprises a tower body, a top cover and a top exhaust chimney arranged on the top cover. The top of the tower body is open and the top of the tower body is suitable for disassembling and assembling the second liquid collecting hopper.

7. The mixed flow demisting and dust removing mechanism according to claim 1, characterized in that: The mixed flow condensation pipe system also includes a vertical pipe, the lower end of which is connected to the horizontal air pipe, and the other end is connected to the end tube. The exhaust fan is arranged at the end tube, and the lower port of the top exhaust chimney is spaced apart from the end tube. The end tube is suitable for blowing air toward the top exhaust chimney.

8. The mixed flow demisting and dust removing mechanism according to claim 7, characterized in that: A negative pressure air suction hole is provided at the upper end of the vertical tube.

9. The mixed flow demisting and dust removing mechanism according to claim 7, characterized in that: The front and rear ends of the mixed flow condensing pipe system are supported on the built-in crossbeam of the dust removal tower. The dust removal tower includes a tower body, a top cover and a top exhaust chimney arranged on the top cover. The top of the tower body is open and suitable for disassembling and assembling the mixed flow condensing pipe system.

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