CN107362646A - A kind of water mist dust-removing system - Google Patents

Abstract

The present invention discloses a kind of water mist dust-removing system, centrifugal separating device, Water-fog dusting apparatus, the demister set including stagewise, high humidity high-temperature gas flows through each region successively, acted on by the structure design to device inner draft tube, water-locator, the superfine nozzle of high pressure, deflector, demister etc. and each area's different principle, big dust particle, fine particle dust and moisture in gas are removed successively, effective dedusting is carried out to the dusty gas of high humidity, high temperature and cooling, dust removal efficiency can reach more than 99%.Further, the system can also integrate Water warfare and EGR, the overflow water of Water-fog dusting apparatus and demister is purified by Water warfare and EGR, and the water after purification is flowed into centrifugal separating device and Water-fog dusting apparatus again, to realize the recycling of water, the usage amount of water for dust removal is greatlyd save, reduces operating cost.

Description

A water mist dust removal system

technical field

The invention belongs to the technical field of environmental protection and treatment, and in particular relates to a water mist dedusting system applied to effectively remove dust in high-humidity (saturated) and high-temperature (not higher than 130°C) gas.

Background technique

In recent years, with the rapid development of the economy, the air pollutants emitted by industrial furnaces have caused great harm to the surrounding environment, so the technology of removing particulate matter from dusty gas to reduce its emission to the atmosphere has become more and more important.

Due to the limitation of my country's energy endowment conditions, coal has always been the main primary energy source in my country. This coal-based energy structure determines that carbon dioxide, sulfur dioxide, smoke, dust, etc. produced by coal combustion are important causes of air pollution in our country. factor. At the same time, the rapid development of metallurgy, cement, waste incineration and other industries has brought about the emission of soot and dust, which further increases the pressure on environmental protection. For the environment, the long-term floating of dust discharged into the atmosphere will reduce the visibility of the atmosphere and cause soot pollution; The trace heavy metal elements and radioactive elements contained in it can also cause senile dementia, leukemia and other fatal diseases. In order to alleviate these hazards, dust collectors, as the main means and equipment of atmospheric dust removal, have been widely used in various industrial sectors.

However, it is difficult to remove dust from high humidity (saturated) and high temperature (not higher than 130°C) gas, the dust removal efficiency of a single dust collector is low, and the energy consumption is high. Dust removal.

Contents of the invention

In order to solve the above problems, the present invention discloses a water mist dust removal system to further improve the dust removal rate in high humidity (saturated) and high temperature (not higher than 130°C) gas.

The water mist dust removal system disclosed in the present invention includes a centrifugal separation device, a water mist dust removal device, and a mist removal device arranged in stages, wherein,

The centrifugal separation device includes a separation area body, a first air inlet, a first air outlet, and an ash collection bin located at the bottom of the separation area body, wherein a plurality of honeycomb-shaped guide tubes are arranged vertically inside the separation area body , the air inlet end of the air guide cylinder communicates with the first air inlet through the air distribution unit; An air outlet pipe is arranged at the air outlet end of the guide cylinder, a fan is arranged at the first air outlet, and a cleaning unit for cleaning the guide cylinder and the air distribution unit is arranged on the top of the body of the separation zone, and the cleaning unit has a plurality of cleaning nozzles;

The water mist dedusting device includes a dust removal area body, a second air inlet, a second air outlet, and a muddy water bin at the bottom of the dust removal area body, wherein a first airflow guide plate is arranged in the dust removal area body, through which the first airflow guide plate The main body of the dust removal area is divided into the first air inlet passage and the dust removal chamber which are connected, the first air inlet passage is connected with the second air inlet, and the dust removal chamber is connected with the second air outlet; the dust removal chamber is arranged with a water distributor from top to bottom and at least one deflector, the water distributor has a plurality of water mist nozzles with water outlets facing downwards and an adjustment controller for adjusting the water output and water pressure, and the deflector has a plurality of deflector holes; the second air intake The mouth communicates with the first air outlet through a pipeline;

The demisting device includes a demisting area body, a third air inlet, a third air outlet, and a clean water tank arranged at the bottom of the demisting area body, wherein a second airflow guide plate is arranged in the demisting area body, through which the second The airflow guide plate divides the main body of the demisting area into the second air intake passage and the demisting chamber, the second air intake passage is connected with the third air inlet, the demisting chamber is connected with the third air outlet, and the demisting chamber is arranged A mist eliminator for removing moisture in the gas; the third air inlet communicates with the second air outlet through a pipe.

As a preferred solution, the gas distribution plate adopts a double-layer structure up and down, and the size and angle of the air intake can be adjusted through the relative position between the double-layer structures.

As a preferred solution, the guide tube is a cylindrical structure, with a number of oblique air inlets on the top as the air inlet to communicate with the first air inlet through the air distribution plate, and a piercing air distribution plate on the top The air outlet pipe is used as the air outlet end, and the bottom has a cone-shaped structure, and an ash falling pipe is arranged at the bottom of the cone-shaped structure; the cleaning nozzles and the air outlet pipe are arranged in a staggered manner, and the water outlet of the cleaning nozzle is located below the air outlet of the air outlet pipe There is an air outlet hole on the air distribution plate for the air outlet pipe of the air guide cylinder to pass through; the gas enters the air distribution unit from the first air inlet, and enters the air guide cylinder obliquely through the air distribution plate and the oblique air inlet holes , after centrifugation, it is discharged from the guide tube through the air outlet pipe, and then it is collected to the first air outlet to be discharged after the action of the fan.

As a preferred solution, an isolation unit is arranged below the cleaning unit, and the isolation unit has a plurality of isolation plates suitable for the size and position of the cleaning nozzles. The isolation plates have a movable flip function and are used to block the dust removal area when the system is in dust removal operation. The gas inside enters the cleaning nozzle, and when the system is maintained and cleaned, it is turned over at a certain angle so that the spray liquid directly falls into the air distribution unit and the guide tube.

As a preferred solution, the second air inlet of the water mist dedusting device is arranged on the top of the dust removal area body, one end of the first airflow guide plate is fixed on the top surface of the dust removal area body, and the other end extends to the bottom of the dust removal area body and There is a certain distance from the bottom surface to divide the main body of the dust removal area into a connected first air inlet passage and a dust removal chamber.

As a preferred solution, in the water mist dedusting device, the water mist nozzles of the water distributor are high-pressure ultra-fine nozzles, which are evenly arranged on the cross section of the dust removal chamber to form a fine water film covering the cross section of the dust removal chamber.

As a preferred solution, in the mist removal device, the mist eliminator includes three sections of baffles, and each section of the baffles is independent of each other and is connected with an angle regulator for adjusting the inclination angle of the baffles.

As a preferred solution, the ash collection bin, the muddy water bin and the clean water bin are all equipped with interlinked material level gauges and automatic discharge valves.

As a preferred solution, the system also includes a water purification and circulation device. The muddy water bin of the water mist dedusting device and the clean water bin of the mist removal device are arranged with an overflow port, and the water discharged from the overflow port of the muddy water bin and the clean water bin It flows into the water purification and circulation device through the pipeline, and after being purified by the water purification and circulation device, it is sent to the centrifugal separation device as regular cleaning water for the centrifugal separation device and/or sent to the demisting device as water for atomization and dust removal.

As a preferred solution, the water purification and circulation device includes a clean room body, an overflow water receiving port, a water replenishment port, a circulating water self-purification interface, a circulating water port and a sewage outlet, wherein a circulating water self-cleaning filling area is arranged in the clean room body, The bottom is arranged with a lake area and a clear water area. The water purified by the circulating water self-cleaning filling area falls into the clear water area. The water discharged from the overflow port of the mud water tank and the clean water tank is connected with the overflow water receiving port through the pipeline and flows into the sedimentation area. ; The circulating water outlet is set on the side of the clean water area, and the water in the clean water area is sent to the centrifugal separation device as the regular cleaning water of the centrifugal separation device through the pipeline and the delivery pump, and sent to the water mist dust removal device as the water for atomization and dust removal; the circulating water self-cleaning interface It is installed on the side of the sedimentation area, and the water in the sedimentation area is introduced into the circulating water self-cleaning packing area through pipelines and pumps for purification; the water replenishment port is used for water purification and regular water replenishment for the circulation device; the sewage outlet is used for the drainage of the sedimentation area and the clean water area Sewage regularly.

The water mist dust removal system disclosed by the present invention has the following beneficial effects:

(1) The three functional areas of centrifugal separation device, water mist dedusting device and demisting device are integrated, and the method of hierarchical setting is adopted. The high-humidity and high-temperature gas flows through each area in turn, and under the action of different principles in each area, the bulk in the gas is sequentially removed. Particle dust, fine particle dust and moisture can effectively remove dust and cool down the high-humidity and high-temperature dust-containing gas, and the removal rate can reach more than 99%, so that the dust, gas and water in the high-temperature and high-humidity dust-containing gas can be completely separated and clean .

(2) According to the gas temperature, humidity, dust content, etc. of the gas to be processed and the effect and processing efficiency to be achieved, through the diversion cylinder, water distributor, high-pressure ultra-fine nozzle, ash collection bin, and muddy water bin in the device Design the structure, and select and control the relevant structural operating parameters of the centrifugal separation device, water mist dust removal device, and mist removal device during the working process, so as to achieve high humidity (saturated), high temperature (not higher than 130°C) dust The dust in the gas can be effectively removed, and the temperature of the purified gas can be cooled by the demister device, which provides favorable conditions for the subsequent system processing.

(3) The system can also integrate a water purification and circulation device, through which the water mist dedusting device and the overflow water of the mist removal device are purified, and the purified water flows into the centrifugal separation device and the water mist dedusting device The device is used to realize the recycling of water, which greatly saves the amount of water used for dust removal and reduces operating costs.

(4) The system comprehensively utilizes the principles of centrifugal separation and water mist dedusting, which can realize dust removal and cooling, and can be directly used to remove dust in high-humidity and high-temperature gases, and cooperate with the demisting device to dehumidify the purified gas, so as to realize dust, The gas and water are separated cleanly and thoroughly; furthermore, the water circulation of the whole device is realized through the water purification and circulation device, so that the water for dust removal and atomization can be recycled. The overall layout is reasonable, the operation is simple, and the operation and maintenance costs are low.

Description of drawings

Fig. 1 is a general structural diagram of the water mist dedusting system disclosed in the embodiment.

Fig. 2 is a schematic structural diagram of the centrifugal separation device in the water mist dust removal system disclosed in the embodiment.

Structural schematic diagram of the water mist dedusting device in the water mist dedusting system disclosed in the embodiment of Fig. 3

Schematic diagram of the structure of the demister device in the water mist dedusting system disclosed in the embodiment of Fig. 4

Schematic diagram of the water purification and circulation device in the water mist dedusting system disclosed in the embodiment of Fig. 5

The partial structure schematic diagram of the guide cylinder in the water mist dedusting system disclosed in the embodiment of Fig. 6

Schematic diagram of the structure of the air distribution plate in the water mist dust removal system disclosed in the embodiment of Fig. 7

Schematic diagram of the structure of the isolation plate in the water mist dust removal system disclosed in the embodiment of Fig. 8

Reference signs:

Centrifugal separation device 1: Separation zone body 101, air inlet 102, air outlet 103, air distribution plate 104, upper air distribution plate 1041, lower air distribution plate 1042, air outlet pipe hole 1043, guide tube 105, ash collection bin 106 , cleaning nozzle 107, isolation plate 108, fixed end 1081, movable end 1082, movable ring 1083, gravity flap valve 109, level gauge 110, automatic discharge valve 111, air outlet pipe 112, ash falling pipe 113, heat preservation jacket 114, oblique air inlet 115;

Water mist dust removal device 2: dust removal area body 201, air inlet 202, air outlet 203, water distributor 204, regulating controller 205, high pressure fine nozzle 206, deflector 207, muddy water tank 208, overflow port 209 , liquid level gauge 210, automatic discharge valve 211, airflow guide plate 212, air intake channel 213, dust removal chamber 214;

Demisting device 3: demisting area body 301, air inlet 302, air outlet 303, airflow guide plate 304, baffle plate 305, angle regulator 306, clean water bin 307, automatic discharge valve 308, overflow port 309 , liquid level gauge 310, air intake channel 311, demister chamber 312;

Water purification and circulation device 4: clean room body 401, circulating water self-purification filling area 402, overflow plate 403, overflow water receiving port 404, water replenishment port 405, circulating water self-purification interface 406, circulating water port 407, sewage outlet 408, sedimentation Area 409, clear water area 410, circulating water self-cleaning lift pump 411, liquid level gauge 412.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

An energy-saving water mist dedusting system is disclosed in the embodiment. Through structural design, the system comprehensively utilizes the principles of centrifugal separation and water mist dedusting, adopts hierarchical settings, and is respectively equipped with a centrifugal separation device, a water mist dedusting device, and a demisting device. Humid (saturated), high temperature (not higher than 130°C) gas flows through each area in turn, and the large particles and fine particles of dust in the gas are sequentially removed under the action of different principles of gravity centrifugal separation, water film dust removal, and folding plate defogging. and moisture, to achieve a dust removal rate of more than 99% in high-temperature, high-humidity dusty gas, and clean and thorough separation of dust, gas, and water. The system as a whole has the functions of cooling and dust removal. The device layout is reasonable, the operation is simple, the separation of dust, gas and water is clean and thorough, the atomization water is recycled, and the operating cost is low. The main body material of each device can be stainless steel or ceramics.

As shown in FIG. 1 , the energy-saving water mist dedusting system includes a centrifugal separation device 1 , a water mist dedusting device 2 , a demisting device 3 , and a water purification and circulation device 4 .

As shown in FIG. 2 , the centrifugal separation device 1 mainly includes a separation area body 101, a conical ash collection bin 104 located at the bottom of the separation area body 101, a separation guide tube 105 located inside the separation area body 101, a cleaning nozzle 107 and an isolation chamber. Plate 108, etc., gravity flap valve 109, level gauge 110, automatic discharge valve 111, etc. are arranged on the ash collection bin 104. The side wall of the separation zone body 101 near the top is provided with an air inlet 102 , and the top surface is provided with an air outlet 103 and a fan (not shown in the figure).

The main body 101 of the separation zone has a plurality of guide tubes 105 arranged in a vertical honeycomb shape, and an air distribution unit is arranged on the top of the guide tubes 105 . As shown in FIG. 6 , the guide tube 105 serves as the core unit of the centrifugal separation device 1 , and it realizes the removal of large particles of dust in the gas through gravity and centrifugal action. The guide cylinder 105 is a cylindrical structure, and its top has a plurality of oblique air inlet holes 115 as the air inlet port through the air distribution plate 104 to communicate with the first air inlet port 102, and the top also has an air outlet pipe 112 as the air outlet end , the bottom has a cone-shaped structure, and an ash fall pipe 113 is arranged at the bottom of the cone-shaped structure.

The air distribution unit has a plurality of air distribution pans 104 equal in number and corresponding to the position of the air guiding cylinder 105 . As shown in Figure 7, the air distribution plate 104 can adopt an upper and lower double-layer structure, that is, the upper air distribution plate 1041 in the figure (a) and the lower air distribution plate 1042 in the figure (b). The air outlet pipe hole 1043 for the air outlet pipe 112 in the guide tube 105 to pass through can adjust the size and angle of the air intake by adjusting the relative position between the double-layer structures.

The gas enters the air distribution unit from the first air inlet 102, enters the guide tube 105 obliquely through the air distribution plate 104 and the oblique air inlet 115, and is discharged from the air outlet pipe 112 after centrifugal separation, and is collected to the second A gas outlet 103 is discharged.

In order to ensure the cleanliness in the separation area body 101, a cleaning unit is also arranged on the top of the separation area body 101, which is used to regularly clean the guide tube 105, the air distribution unit and other internal structures of the separation area body 101. The cleaning unit has multiple outlets. The cleaning nozzle 107 with the nozzle facing down. Further, in order to prevent the cleaning nozzle 107 from being blocked due to long-term use, an isolation unit is arranged under the cleaning unit, and the isolation unit has a plurality of isolation plates 108 . The isolation plate 108 is correspondingly arranged under the cleaning spray head 107, and is a movable structure capable of turning over. During normal operation, the cleaning unit does not work, and the isolation plate 108 is arranged horizontally, which is used to isolate the gas in the separation area body 101 from entering the cleaning nozzle 107 to prevent the cleaning nozzle 107 from being blocked; when the cleaning device is required to stop working, it can be vertically Flipping at a certain angle, even 90 degrees, is conducive to the smooth spraying of water from the cleaning nozzle 107 to clean the air distribution unit and the guide tube 105 . As shown in FIG. 8 , the embodiment provides a schematic structural view of a separation plate 108, which includes a fixed end 1081, a movable end 1082 and a movable ring 1083. The fixed end 1081 can be laterally fixed inside the separation zone body 101 by a bracket. The movable end 1082 is laterally fixed by the movable ring 1083, and the movable ring 1083 is manually controlled so that the isolation plate 108 can be turned over to realize the isolation of gas or the downstream flow of spray liquid. Of course, in actual application, the isolation plate 108 is not limited to this structure, for example, automatic flipping or other forms of design may be adopted.

A gravity flap valve 109 is set between the ash falling pipe 113 of the diversion tube 105 and the ash collecting bin 106. The valve plate of the gravity flap valve 109 is automatically opened under the gravity of the dust accumulated in the ash falling pipe 113, and the material falls , the counterweight lever system makes the valve plate reset automatically again, in order to automatically open the blanking after the dust falling pipe 113 accumulates dust next time.

An automatic discharge valve 111 is set at the bottom of the ash collection bin 106, and a level gauge 110 is set on the side wall. The automatic discharge valve 111 and the level gauge 110 have a linkage effect. position, the automatic discharge valve 111 is opened for discharge, until the material height reaches the low level set by the level meter 110, the automatic discharge valve 111 is closed.

The outer wall of the separation zone body 101 is provided with a thermal insulation jacket 114 to ensure a constant temperature inside the guide tube 105 and reduce the impact of the centrifugal separation effect of the guide tube 105 on the external environment temperature.

As shown in FIG. 3 , the water mist dedusting device 2 mainly includes a dust removal area body 201 and a muddy water bin 208 in a conical structure at the bottom of the dust removal area body 201, an air inlet 202, an air outlet 203, an air outlet 203 at the top of the dust removal area body 201, The water distributor 204, regulating controller 205, high-pressure ultra-fine nozzle 206, deflector 207, airflow guide plate 212 arranged in the dust removal area body 201, and the overflow port 209 and liquid level arranged on the muddy water tank 208 Meter 210, automatic discharge valve 211.

The air inlet 202 is arranged on the top of the dust removal area body 201 and communicates with the air outlet 103 of the centrifugal separation device 1 through a pipeline. The air outlet 203 is opened on the top surface of the main body 201 of the dust removal area.

One end of the airflow guide plate 212 is fixed at the top air inlet 202 of the dust removal area body 201 , and the other end is a suspended end, which extends downwards to a certain distance from the bottom of the dust removal area body 201 . The interior of the dust-removing area body 201 is divided by the airflow guide plate 212 into an air inlet passage 213 communicating with the air inlet 202 and a dust-removing chamber 214 communicating with the air outlet 203 . In FIG. 3 , the airflow guide plate 212 is surrounded by the inner wall of the dust removal area body 201 to form an air intake channel 213 , and the other side of the air flow guide plate 212 is the dust removal chamber 214 located in the center of the dust removal area body 201 .

A water distributor 204 is arranged horizontally on the top of the dust removal chamber 214, so that the water mist and dust removal water are evenly distributed. The water distributor 204 can be set as a double-layer structure, and the water volume and water pressure can be adjusted according to the dust removal needs by adjusting the controller 205 . Further, the sprayed water can form a layer of fine water film covering the cross section of the dust removal chamber 214 by setting the high-pressure ultra-fine nozzle 206 to atomize the water, and the fine dust particles in the dust-containing gas are separated from the gas under the action of the water mist. , and fall into muddy water storehouse 208.

At least one deflector 207 is arranged on the lower part of the water distributor 204, and the deflector 207 has a plurality of uniformly distributed deflector holes to promote the uniform flow of gas from bottom to top. In an embodiment, the deflector is configured to include a horizontal short plate and an inclined short plate connected to the edge of the horizontal short plate and inclined upward, and the other end of the inclined short plate is fixed on the inner wall of the dust removal chamber or the airflow guide plate.

The muddy water tank 208 has a conical structure and adopts a partition structure. It is provided with an overflow area and a sedimentation area. An automatic discharge valve 211 is provided in the sedimentation area at the bottom, and an overflow port 209 and Level gauge 210. The material in the mud tank is mainly a mixture of water and dust, the mixture is gradually stratified under the action of gravity, the supernatant liquid flows into the overflow water receiving port 404 of the water purification and circulation device 4 through the overflow port 209 and the connecting pipe, and the bottom layer is turbid The liquid passes through the linkage effect of the automatic unloading valve 211 and the liquid level gauge 210. When the liquid level reaches the high level set by the liquid level gauge 210, the automatic unloading valve 211 is opened to discharge the material until the liquid material height reaches the liquid level. The level meter 210 sets the low liquid level of the parameter, and the automatic discharge valve 211 is closed.

The mud water tank 208 adopts a partition structure and is equipped with an overflow area and a sedimentation area. The clean water after sedimentation enters the water purification and circulation device, and is used as atomized water and supplementary water for water mist and dust removal, and the sediment is discharged into the subsequent treatment system. .

As shown in FIG. 4 , the demisting device 3 mainly includes a demisting area body 301, a clean water bin 307, an air inlet 302, an air outlet 303, and an airflow guide plate 304 and a baffle arranged in the demisting area body 301. 305 and angle regulator 306, the automatic discharge valve 308, overflow port 309 and liquid level gauge 310 arranged in the clean water bin 307.

The air inlet 302 is arranged on the top of the demister body 301 and communicates with the air outlet 203 of the water mist dedusting device 2 through a pipe. The air outlet 303 is opened on the top surface of the demisting area body 301 and directly communicates with the outside.

One end of the airflow guide plate 304 is fixed at the air inlet 302 on the top surface of the demisting area body 301 , and the other end is a suspended end, which extends downwards to a certain distance from the bottom of the demisting area body 301 . The interior of the defogging zone body 301 is divided into an air inlet passage 311 communicating with the air inlet 302 and a demister chamber 312 communicating with the air outlet 303 by the airflow guide plate 304 . The airflow guide plate 304 and the inner wall of the defogging area body 301 enclose an air intake passage 311 , and the other side of the airflow guide plate 304 is the demisting chamber 312 located in the center of the defogging area body 301 .

The baffle plate 305 has three sections, and each section is arranged with an angle adjuster 306 to form a mist eliminator in the mist removal chamber 312 . . The angle of the baffle plate 305 can be adjusted by the angle regulator 306 according to the gas velocity, flow rate and water droplet trapping effect, so as to achieve the best defogging effect.

The clean water tank 307 has a cone-shaped structure, and is used to recover the water condensed by the gas in the deflection process, and the water flows to the water purification and circulation device 4 through the overflow port 309 for purification, and is used as the dedusting water for the mist dedusting area 3 Supplementary water, at the same time, it is used as regular cleaning water and supplementary water for the centrifugal separation device. The material in the clean water tank is mainly water and some dust. The supernatant liquid flows into the overflow water receiving port 404 of the water purification and circulation device 4 through the overflow port 308 and the connecting pipe, and the bottom turbid liquid passes through the automatic discharge valve 309 and the liquid level gauge. The linkage effect of 310, when the liquid level height reaches the high liquid level of the setting parameters of the liquid level gauge 310, the automatic discharge valve 309 is opened to discharge the material, and the liquid material height reaches the low liquid level of the setting parameters of the liquid level gauge 310. The automatic dump valve 309 is closed.

As shown in Figure 5, the water purification and circulation device 4 mainly includes a purification chamber body 401, a circulating water self-purification filling area 402, an overflow plate 403, an overflow water receiving port 404, a water supply port 405, a circulating water self-purification interface 406, and a circulating water port 407, sewage outlet 408.

The circulating water self-cleaning filling area 402 is arranged inside the clean room body 401. The filling is made of polyester fiber material, and the bottom is made of pebbles as a cushion layer. It is mainly used for purifying water and removing particles and impurities in water.

The overflow plate 403 is located at the bottom of the clean room body 401 and divides the bottom of the clean room body 401 into a clean water area 410 and a sedimentation area 409 . After the self-purification of the filler water body, the water falls into the clean water area 410, and the water introduced from the overflow water receiving port 404 enters the sedimentation area 409 for circulating water.

The overflow water receiving port 404 communicates with the overflow port 209 of the water mist dust removal device 2 and the overflow port 309 of the mist removal device 3 through pipes, and is used for receiving the overflow water of the water mist dust removal device 2 and the mist removal device 3 .

The water replenishment port 405 is used for water purification and circulation equipment to replenish water regularly, so as to ensure the normal use of system functions when the overflow water volume is small and the sewage discharge volume is large.

The circulating water self-purification interface 406 connects the water overflowed from the water mist dedusting device 2 and demisting device 3 through a delivery pump and pipelines to perform water purification.

Circulating water port 407 is used to send the purified water from the water purification and circulation device 4 to the centrifugal separation device 1 as the regular cleaning water of the centrifugal separation device 1 by connecting the delivery pump and the pipeline, and to the water mist dust removal device 2 as atomization dust removal Use water and make up water.

The sewage outlet 408 is used to regularly discharge sewage to the sedimentation area 409 and the clean water area 410 .

The system works as follows:

When the water mist dedusting system is in operation, the high-humidity, high-temperature dust-laden gas enters the separation area body 101 through the air inlet 102, and enters the centrifugal guide through the oblique air inlet 115 of the guide tube after being evenly distributed by the air distribution plate 104. In the flow tube 105, the dust particles adhere to the inner wall of the centrifugal flow guide tube 105 and fall into the ash collection bin 106 at the bottom under the action of gravity centrifugal force. At this time, most of the dust particles have been removed, and the gas purified by the centrifugal separation device 1 passes through the outlet The air pipe 112 is discharged, and is discharged from the centrifugal separation device 1 through the air outlet 103 through the action of the fan. When the ash collection bin 106 at the bottom of the diversion tube 105 reaches the design value, the gravity flap valve 109 automatically unloads the ash and discharges it into the follow-up processing system. After unloading, the valve is automatically closed until the next unloading.

The dedusting gas discharged from the air outlet 103 of the centrifugal separation device 1 enters the air inlet 202 of the water mist dedusting device 2 through the pipeline, and then enters the dust removal chamber 214 along the air inlet passage 213, and the water distributor 204 is arranged on the top of the dust removal area body 201 The top water body is evenly distributed, and the water volume and water pressure can be adjusted by adjusting the controller 205, and a fine water film is formed under the action of the high-pressure ultra-fine nozzle. The gas and the water film meet in the water mist dust removal device, and the dust in the gas The particles are removed to the greatest extent, and the gas purified by the water mist dedusting device 2 is discharged through the gas outlet 203 . During this process, the water mist dedusting device also has a cooling effect, which greatly reduces the temperature of the gas. The water with fine dust falls into the mud tank 208 at the bottom, and the clean water after sedimentation is discharged from the overflow port 209 and enters the water purification and circulation device 4 through the pipeline to be used as atomized water for water mist and dust removal and its supplement Water and sediment are discharged into the subsequent treatment system through the action of the automatic discharge valve 211.

The clean gas after the centrifugal separation by the centrifugal separation device 1 and the water film dedusting by the water mist dedusting device 2 enters the air inlet 302 through the pipe, and enters the demisting chamber 312 of the demistering device 3 along the air intake passage 311 . The three-stage baffle plate 305 in the demisting chamber 312 can be adjusted according to the needs of condensing moisture through the angle regulator 306 , and can be operated flexibly. The clean dry gas after demisting is discharged through the air outlet 303 . The condensed water enters the bottom water purification tank 307, and the clean water after sedimentation is discharged from the overflow port 309, and enters the water purification and circulation device 4 through the pipeline, and is used as atomized water and supplementary water for water mist and dust removal. . So far, the removal of high-humidity, high-temperature gas dust and water vapor in the gas has been completed.

In the above process, the ash collection bin 106, the muddy water bin 208, and the clean water bin 307 of the water mist dedusting system are respectively equipped with material level gauges, that is, a material level gauge 110, a liquid level gauge 210, and a liquid level gauge 310, and the bottom is equipped with an electric valve. , that is, the gravity flap valve 109, the automatic discharge valve 211, the automatic discharge valve 308, the material level gauge and the electric valve are interlocked and controlled. Subsequent processing system, the valve is automatically closed after the material level reaches the low level.

The water overflowed from the water mist dedusting device 2 and demisting device 3 flows into the sedimentation area 409 through the overflow water receiving port 404 of the water purification and circulation device 4, and then is sent to the clean room body through the circulating water self-cleaning lift pump 411 and pipelines The upper part of 401 is filtered and purified by the packing in the circulating water self-cleaning packing area 402 to remove particles and impurities in the water. After self-purification by the filler, the water falls into the clean water area, and then sent to the centrifugal separation device 1 as regular cleaning water for the centrifugal separation device through the connection pump and pipeline, and sent to the water mist dust removal device 2 as atomized dust removal water and supplementary water.

Although the embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments and application fields, and the above-mentioned specific embodiments are only illustrative, instructive, and not restrictive . Under the enlightenment of this description, those skilled in the art can also make many forms without departing from the protection scope of the claims of the present invention, and these all belong to the protection of the present invention.

Claims (10)

1. A kind of 1. water mist dust-removing system, it is characterised in that centrifugal separating device, Water-fog dusting apparatus including stagewise setting, Demister,

   Centrifugal separating device includes Disengagement zone body, the first air inlet, the first gas outlet, positioned at the receipts ash of Disengagement zone body bottom portion Storehouse, wherein, multiple guide shells in cellular arrangement are vertically arranged in the body of Disengagement zone, the inlet end of guide shell passes through gas distribution Unit connects with the first air inlet；Gas distribution unit has to be entered with guide shell quantity identical air-spreading disk, air-spreading disk and guide shell Gas end is corresponding to be connected；The outlet side of each guide shell is disposed with escape pipe, and blower fan, the Disengagement zone sheet are disposed with the first gas outlet Body top layout has the cleaning unit for cleaning guide shell and gas distribution unit, and cleaning unit has multiple cleaning sprayers；

   Water-fog dusting apparatus includes dedusting area body, the second air inlet, the second gas outlet, positioned at the muddy water of dedusting area body bottom portion Storehouse, wherein, the first gas-flow deflector is disposed with the body of dedusting area, is divided into dedusting area body by the first gas-flow deflector The first inlet channel and dirt pocket being connected, the first inlet channel connect with the second air inlet, dirt pocket and the second gas outlet Connection；Water-locator and at least one piece of deflector are disposed with dirt pocket from top to bottom, water-locator has multiple delivery ports directed downwardly Waterfog head and for adjusting water outlet water and the adjustment control device of hydraulic pressure, has multiple pod apertures on deflector；Second air inlet Mouth is connected by pipeline with the first gas outlet；

   Demister includes except fog-zone body, the 3rd air inlet, the 3rd gas outlet, is arranged in except the water purification of fog-zone body bottom portion Storehouse, wherein, except the second gas-flow deflector is disposed with the body of fog-zone, will be divided into by the second gas-flow deflector except fog-zone body The second inlet channel being connected is with removing fog chamber, and the second inlet channel connects with the 3rd air inlet, except fog chamber and the 3rd gas outlet Connect, the demister for removing aqueous vapor in gas is arranged in demisting room；3rd air inlet is connected by pipeline and the second gas outlet It is logical.
2. 2. water mist dust-removing system as claimed in claim 2, it is characterised in that：The air-spreading disk uses Dual-layer structure, leads to Cross the size and angle of relative position regulation air inflow between double-decker.
3. 3. water mist dust-removing system as claimed in claim 1 or 2, it is characterised in that：The guide shell is cylinder-like structure, top Connected with multiple oblique air admission holes as inlet end by air-spreading disk with the first air inlet, top also has one and wears gas distribution For the escape pipe of disk as outlet side, bottom has one section of cone structure, and arranges an ash tube in the bottom of cone structure；Respectively Cleaning sprayer is staggered with escape pipe and the delivery port of cleaning sprayer is located at below the gas outlet of escape pipe；Have on air-spreading disk One is available for the interspersed outlet pore of the escape pipe of guide shell；Gas enters gas distribution unit by the first air inlet, by air-spreading disk and Each oblique air admission hole is oblique to enter guide shell, discharges guide shell by escape pipe after being centrifuged, then collect after fan action Discharged to the first gas outlet.
4. 4. water mist dust-removing system as claimed in claim 1, it is characterised in that：The cleaning unit arranged beneath has isolation single Member, isolated location have multiple division boards being adapted with cleaning sprayer size and location, and the division board has activity upset work( Can, it is used to stop that the intrinsic gas in dedusting area enters cleaning sprayer when system dust removing is run, is turned over when system maintenance is cleaned Turning certain angle makes spray liquid fall directly into gas distribution unit and guide shell.
5. 5. water mist dust-removing system as claimed in claim 1, it is characterised in that：Second air inlet cloth of the Water-fog dusting apparatus The top of dedusting area body is placed in, the top surface of dedusting area body is fixed in one end of the first gas-flow deflector, and the other end extends to The bottom of dedusting area body is simultaneously spaced apart with bottom surface, and dedusting area body is divided into the first inlet channel being connected And dirt pocket, air-flow enters the first inlet channel from the second air inlet, and flows to dirt pocket by the first inlet channel.
6. 6. water mist dust-removing system as claimed in claim 1, it is characterised in that：In the Water-fog dusting apparatus, the water of water-locator Fog spray head is the superfine nozzle of high pressure, is evenly arranged in the cross section of dirt pocket, and the thin of dedusting chamber cross-section is covered to form one layer Close moisture film.
7. 7. water mist dust-removing system as claimed in claim 1, it is characterised in that：In the demister, demister includes three sections Formula deflection plate, each section of deflection plate is separate and is connected with the angle demodulator for adjusting deflection plate angle of inclination.
8. 8. water mist dust-removing system as claimed in claim 1, it is characterised in that：Receipts ash silo, muddy water storehouse and the clean water sump are matched somebody with somebody It is equipped with the level-sensing device and automatic discharging valve mutually to link.
9. 9. water mist dust-removing system as claimed in claim 1, it is characterised in that：Also include Water warfare and EGR, water smoke removes The muddy water storehouse of dirt device and the clean water sump of demister are disposed with overfall, and the water of the overfall discharge of muddy water storehouse and clean water sump leads to Piping flows into Water warfare and EGR, and centrifugal separating device is re-fed into as centrifugation after Water warfare and EGR purification The regular cleaning water of separator and/or feeding demister are as nebulization dust water.
10. 10. water mist dust-removing system as claimed in claim 9, it is characterised in that：The Water warfare and EGR include purification Room body, overflow water receiving port, water supplement port, circulating water self-cleaning interface, cycling use of water mouth and sewage draining exit, wherein,

    Circulating water self-cleaning packing area is disposed with clean room's body, its bottom is disposed with settling zone and clear water zone, through recirculated water certainly Water after net packing area purification falls into clear water zone, and the water of the overfall discharge of muddy water storehouse and clean water sump is connect by pipeline and overflow water Close up and connect and flow into settling zone；

    Cycling use of water mouth, which is arranged on clear water zone side and the water of clear water zone is delivered into centrifugal separating device by pipeline and delivery pump, to be made For centrifugal separating device regular cleaning water and deliver to Water-fog dusting apparatus as nebulization dust water；

    Circulating water self-cleaning interface is arranged on settling zone side and the water of settling zone is introduced into recirculated water certainly by pipeline and delivery pump Net packing area is purified；

    Water supplement port is used for Water warfare and EGR regular replenishment water；

    Sewage draining exit is used for the periodical blowdown to settling zone and clear water zone.