CN114642951A - Flue gas treatment device - Google Patents
Flue gas treatment device Download PDFInfo
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- CN114642951A CN114642951A CN202210164089.XA CN202210164089A CN114642951A CN 114642951 A CN114642951 A CN 114642951A CN 202210164089 A CN202210164089 A CN 202210164089A CN 114642951 A CN114642951 A CN 114642951A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 239000003546 flue gas Substances 0.000 title claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 238000009827 uniform distribution Methods 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims description 51
- 239000002356 single layer Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 19
- 238000009833 condensation Methods 0.000 abstract description 14
- 230000005494 condensation Effects 0.000 abstract description 14
- 239000000779 smoke Substances 0.000 description 30
- 238000000034 method Methods 0.000 description 13
- 230000008030 elimination Effects 0.000 description 9
- 238000003379 elimination reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 206010022000 influenza Diseases 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The embodiment of the invention discloses a flue gas treatment device, which comprises: the air uniform distribution ejector, the flue gas air mixer and the water collector are arranged in the flue and are sequentially arranged along the flow direction of flue gas; the air uniform distribution ejector is connected with an air source and used for providing air for the flue; the flue gas passes through the air uniform distribution ejector and the flue gas air mixer in sequence, is condensed into liquid and is collected by the water collector. During operation, saturated wet flue gas firstly passes through the air uniformly-distributed ejector and is mixed with natural cold air sprayed by the air uniformly-distributed ejector, then mixed air enters the flue gas/air mixer for disturbance mixing, sufficient contact heat exchange between the flue gas and the cold air is guaranteed, condensation droplets are formed, and the condensation droplets are condensed and grow up. After the mixed air enters the water collector, the mixed air forms cyclone, and liquid drops continue to be condensed and thrown onto the flue wall and flow into a liquid collecting tank to be discharged. And the moisture content of the saturated wet flue gas is reduced, and the saturated wet flue gas is discharged after the fog drops are removed.
Description
Technical Field
The embodiment of the invention relates to the field of energy conservation and environmental protection, in particular to a flue gas treatment device.
Background
A large amount of saturated wet flue gas with water vapor is directly discharged in China, for example, the temperature of the discharged flue gas at the outlet of most of desulfurization towers of wet desulfurization systems is 50-60 ℃, and the flue gas is directly discharged in the form of saturated wet flue gas without being heated. As the smoke contains a large amount of water vapor, once the smoke is discharged into the atmosphere, the smoke contacts with cold air to reduce the temperature, a large amount of small droplets are condensed and separated out, and the small droplets have the refraction and scattering effects on light, so that smoke plume at the outlet of the chimney is white or gray, commonly called white smoke. The white smoke phenomenon not only causes the waste of a large amount of water resources, but also can form obvious visual pollution and bring huge social public opinion pressure for enterprises, and wet smoke contains a certain amount of acid components and fine particles, and small liquid drops condensed and separated out in the diffusion process of wet smoke plumes fall on the ground to form environmental pollution to the periphery.
The method for eliminating the white smoke mainly comprises a direct heating method, a condensation method and a condensation reheating method. The direct heating method and the indirect heating method only eliminate visual influence and do not reduce the moisture content of the smoke; the cooling condensation method has high requirement on a cold source. The cooling and condensing method includes phase-change condensation method and direct spraying method. The phase-change condensation method belongs to indirect heat exchange condensation, namely, demineralized water is taken as a cold source to flow in a heat exchanger tube bundle in a circulating manner, when clean flue gas passes through the tube bundle, the temperature is reduced, and after water vapor is condensed, a liquid film is formed on the tube wall, and finally liquid drops are formed. The direct spraying method can enable the desulfurized clean flue gas to enter the white eliminating device from top to bottom, adopts a special fine mist spray gun to spray and cool, simultaneously brings out residual particles and the like in the flue gas and enables the particles and the like to enter the discharged water, and can also adopt spraying liquid to cool, and then indirectly cools the spraying liquid through circulating cooling water.
The cooling needs to adopt circulating cooling water, the requirement on circulating water is large, the requirement on cooling water is high, a large cooling tower needs to be configured besides a heat exchange device, and an economical, reasonable, energy-saving and efficient method is not realized essentially.
Disclosure of Invention
Therefore, the embodiment of the invention provides a flue gas treatment device, which aims to solve the problems that the process of condensing and whitening flue gas in the prior art is not economical, reasonable, energy-saving and efficient.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in one aspect of an embodiment of the present invention, there is provided a flue gas treatment device comprising:
the air uniform distribution ejector, the flue gas air mixer and the water collector are arranged in the flue and are sequentially arranged along the flow direction of flue gas;
the air uniform distribution ejector is connected with an air source and used for providing air into the flue; the flue gas passes through the air uniform distribution ejector and the flue gas air mixer in sequence, is condensed into liquid and is collected by the water collector.
Further, the single layer air ejector includes:
a plurality of nozzles and a plurality of main tubes in communication with the plurality of nozzles, the plurality of main tubes connected to the air source;
wherein, evenly arrange on the cross-section of flue between a plurality of main pipe, a plurality of nozzles set up towards the flow direction of flue gas.
Further, the flue gas air mixer comprises:
a first turbulent tube layer close to the air uniformly-distributed injectors and a second turbulent tube layer far away from the air uniformly-distributed injectors;
the first turbulent tube layer and the second turbulent tube layer are respectively formed by arranging a plurality of turbulent tubes;
the first turbulent tube layer and the second turbulent tube layer are arranged in a parallel and staggered mode.
Further, when the flue is a vertical flue, the water collector comprises a cyclone plate liquid remover and a water outlet.
Further, the cyclone plate liquid remover comprises an inner cylinder with a closed conical hopper and blades; the straight cylinder section and the conical section of the inner cylinder are of closed structures and are parallel to the flow direction of the flue gas, and the tip end of the conical hopper is opposite to the flow direction of the flue gas.
Further, the diameter of the inner cylinder is one fifth to one tenth of the inner diameter of the flue; the inner edges of the blades are parallel to the inner barrel and are uniformly arranged along the straight barrel section of the inner barrel, the blades are smoothly twisted to the flue wall fixing plate anticlockwise, and the horizontal lift angle of the outer edges of the blades is 35-50 degrees.
Further, when the flue is a horizontal flue, the water collector comprises a flat-plate demister and a water outlet.
Further, the vertical cross section of the flat demister is arranged, a through long water collecting tank is arranged at the bottom of the flat demister, and the water outlet is formed in the bottom of the water collecting tank.
The embodiment of the invention has the following advantages:
the embodiment of the invention discloses a flue gas treatment device, which utilizes natural cold air to mix and cool saturated high-moisture flue gas, liquid drops are formed after the saturated high-moisture flue gas is supersaturated, the liquid drops are collected to achieve the purpose of collecting water, and the moisture content of the saturated wet flue gas is reduced. Is beneficial to reducing the generation of white smoke and the colored smoke and rain tailing of smoke. The cold source of the invention is natural cold air which is easy to obtain, and the purposes of water collection and white elimination are realized through a special gas mixing device and a liquid drop collecting device. The technical scheme of the invention has the advantages of reasonable route, water and energy saving and higher value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.
Fig. 1 is a schematic structural diagram of a flue gas treatment device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an air distribution injector provided in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a flue gas-air mixer provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a water collector provided in an embodiment of the present invention;
fig. 5 is a schematic diagram of the principle of flue gas treatment provided by the embodiment of the invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
Examples
Referring to fig. 1 to 5, an embodiment of the present invention provides a flue gas treatment apparatus, including: the air uniform distribution ejector, the flue gas air mixer and the water collector are arranged in the flue and are sequentially arranged along the flow direction of flue gas. Wherein, the air equipartition sprayer is connected with the air source for provide the air in the flue. The flue gas passes through the air uniform distribution ejector and the flue gas air mixer in sequence, is condensed into liquid and is collected by the water collector.
As shown in fig. 5, the invention aims to develop a device for condensing and collecting water and eliminating white smoke from high moisture flue gas by using natural wind, so as to achieve the purposes of collecting water and reducing white smoke. The principle diagram of condensation and white elimination using natural air as a cold source is shown in figure 5, wherein point A is an external air point, point B is a flue gas/air mixing point, and point C is a saturated flue gas initial point. After the saturated flue gas is mixed with certain air, the saturated flue gas is supersaturated between the C point and the D point to produce water.
The device is arranged in a vertical flue (chimney) or a horizontal flue. The device comprises an air uniform distribution ejector, a flue gas air mixer and a water collector. See figure 1 for a simplified structure of a high moisture content flue gas condensing and white elimination device.
The water collector is a cyclone plate liquid remover when installed in a vertical flue (chimney), and is a flat demister when installed in a horizontal flue.
As shown in fig. 2, the single layer air ejector includes: the air source is connected with the main pipes. Wherein, evenly arrange on the cross-section of flue between a plurality of main pipes, a plurality of nozzles set up towards the flow direction of flue gas.
The device is arranged at a stable position of a flue gas flow field. The air uniform distribution ejector, the flue gas air mixer and the water collector are sequentially arranged along the flow direction of flue gas. The air is uniformly distributed at the nozzle outlet of the ejector and the clear distance of 300-500mm from the flue gas-air mixer. The clear distance between the flue gas and air mixer and the water collector is 3000mm-5000 mm. The straight section clear distance of the rear flue of the water collector on the vertical flue is not less than 10000 mm. The straight section clear distance of the rear flue of the water collector on the horizontal flue is not less than 5000 mm.
The air uniform distribution ejector can be arranged in a single layer or multiple layers according to the cold air quantity, and the total plane area of each layer of main pipe is not more than 50% of the total cross section area of the flue. Each layer comprises a plurality of nozzles and a plurality of main pipes, the arrangement mode of the air uniformly distributed ejectors of each layer is the same, and the layer spacing is 500mm-1000 mm. Each layer of main pipe is arranged on the cross section of the flue at equal intervals. The nozzle is communicated with the main pipe and arranged on the main pipe in parallel, and the nozzle is arranged in parallel with the smoke, and the outlet faces the direction of the smoke flow. The distance between the nozzles is 400mm and 600mm, and the nozzles are uniformly arranged on the cross section of the flue in a rectangular shape. The nozzle is a short pipe with the length of 50-150mm, and the flow velocity in the pipe is 20-35 m/s.
As shown in fig. 3, the flue gas-air mixer includes: the first turbulent tube layer is close to the air uniform distribution ejector and the second turbulent tube layer is far away from the air uniform distribution ejector. The first turbulent tube layer and the second turbulent tube layer are respectively formed by arranging a plurality of turbulent tubes. The first turbulent tube layer and the second turbulent tube layer are arranged in parallel. The flue gas air mixer comprises two layers of turbulent flow tubes. Each layer of turbulent flow pipe is composed of a plurality of equidistant pipelines. The first layer turbulence pipe and the nozzle parallel arrangement that are close to the air equipartition sprayer, the second layer turbulence pipe is on a parallel with first layer turbulence pipe, two-layer turbulence pipe interval 300-. The aperture of the turbulent flow tube DN100-DN 200.
As shown in fig. 4, further, when the flue is a vertical flue, the vertical flue water collector consists of a cyclone plate liquid remover and a water discharge port. The cyclone plate liquid remover comprises an inner cylinder with a closed cone bucket and blades. The straight section and the conical section of the inner cylinder are of a closed structure and are parallel to the flue gas, and the tip of the conical hopper is opposite to the flow direction of the flue gas. The cone angle of the cone bucket is 90-120 degrees. The diameter of the inner cylinder is one fifth to one tenth of the inner diameter of the flue. The inner edge of each blade is parallel to the inner cylinder and is uniformly arranged along the straight cylinder section of the inner cylinder. The blade is smoothly twisted to the flue wall fixing plate anticlockwise, and the horizontal lift angle of the outer edge of the blade is 35-50 degrees. The bottom of the outer edge of each blade is provided with a condensate collecting tank along the inner wall of the flue, and the bottom of the outer side of each collecting tank is provided with a water outlet.
When the flue is a horizontal flue, the horizontal flue water collector consists of a flat demister and a water outlet. The vertical section of the flat demister is arranged, the bottom of the demister is provided with a through long water collecting tank, and the bottom of the water collecting tank is provided with a water outlet.
During operation, saturated wet flue gas firstly passes through the air uniform distribution ejector and is mixed with natural cold air sprayed by the air uniform distribution ejector, then mixed air enters the flue gas-air mixer to be subjected to disturbance mixing, the flue gas and the cold air are guaranteed to be fully contacted and exchange heat, condensation droplets are formed, and the condensation droplets are condensed and grow up. After the mixed air enters the water collector, the liquid drops are further condensed and grow. The vertical flue cyclone plate liquid remover throws liquid drops onto the flue wall, and the liquid drops flow into the liquid collecting tank to be discharged. The flat demister with the horizontal flue intercepts liquid drops on demister blades, grows up along with the liquid drops, and falls into a liquid collecting tank to be discharged. And the moisture content of the saturated wet flue gas is reduced, and the saturated wet flue gas is discharged after the fog drops are removed.
Description of the contents:
the invention aims to develop a device for condensing and collecting water and eliminating white smoke on high-moisture smoke by utilizing natural wind, and aims to collect water and reduce white smoke. The principle diagram of condensation and white elimination using natural air as a cold source is shown in figure 5, wherein point A is an external air point, point B is a flue gas/air mixing point, and point C is a saturated flue gas initial point. After the saturated flue gas is mixed with certain air, the saturated flue gas is supersaturated between the C point and the D point to produce water.
The device is arranged in a vertical flue (chimney) or a horizontal flue. The device comprises an air uniform distribution ejector, a flue gas air mixer and a water collector. See figure 1 for a simplified structure of a high moisture content flue gas condensing and white elimination device.
The water collector is a cyclone plate liquid remover when installed in a vertical flue (chimney), and is a flat demister when installed in a horizontal flue.
The device is arranged at a stable position of a flue gas flow field. The air uniform distribution ejector, the flue gas air mixer and the water collector are sequentially arranged along the flow direction of flue gas. The clear distance between the air uniformly distributed injector nozzle outlets and the flue gas-air mixer is 300-500 mm. The clear distance between the flue gas and air mixer and the water collector is 3000mm-5000 mm. The straight section clear distance of the rear flue of the water collector on the vertical flue is not less than 10000 mm. The straight section clear distance of the rear flue of the water collector on the horizontal flue is not less than 5000 mm.
The air uniform distribution ejector can be arranged in a single layer or multiple layers according to the cold air quantity, and the total plane area of each layer of main pipe is not more than 50% of the total cross section area of the flue. Each layer comprises a plurality of nozzles and a plurality of main pipes, the arrangement mode of the air uniformly distributed ejectors of each layer is the same, and the layer spacing is 500mm-1000 mm. Each layer of main pipe is arranged on the cross section of the flue at equal intervals. The nozzle is communicated with the main pipe and arranged on the main pipe in parallel, and the nozzle is arranged in parallel with the smoke and the outlet faces the direction of the smoke flow. The distance between the nozzles is 400mm and 600mm, and the nozzles are uniformly arranged on the cross section of the flue in a rectangular shape. The nozzle is a short tube with the length of 50-150mm, and the flow velocity in the tube is 20-35 m/s.
The flue gas air mixer comprises two layers of turbulent flow tubes. Each layer of turbulent flow pipe is composed of a plurality of equidistant pipelines. The first layer turbulence pipe and the nozzle parallel arrangement that are close to the air equipartition sprayer, the second layer turbulence pipe is on a parallel with first layer turbulence pipe, two-layer turbulence pipe interval 300-. The aperture of the turbulent flow tube DN100-DN 200.
The vertical flue water collector consists of a cyclone plate liquid remover and a water outlet. The cyclone plate liquid remover comprises an inner cylinder with a closed cone bucket and blades. The straight section and the conical section of the inner cylinder are of a closed structure and are parallel to the flue gas, and the tip of the conical hopper is opposite to the flow direction of the flue gas. The cone angle of the cone bucket is 90-120 degrees. The diameter of the inner cylinder is one fifth to one tenth of the inner diameter of the flue. The inner edges of the blades are parallel to the inner cylinder and are uniformly arranged along the straight cylinder section of the inner cylinder. The blade is smoothly twisted to the flue wall fixing plate anticlockwise, and the horizontal lead angle of the outer edge of the blade is 35-50 degrees. The bottom of the outer edge of each blade is provided with a condensate collecting tank along the inner wall of the flue, and the bottom of the outer side of each collecting tank is provided with a water outlet.
The horizontal flue water collector consists of a flat plate demister and a water outlet. The vertical section of the flat demister is arranged, the bottom of the demister is provided with a through long water collecting tank, and the bottom of the water collecting tank is provided with a water outlet.
During operation, saturated wet flue gas firstly passes through the air uniform distribution ejector and is mixed with natural cold air sprayed by the air uniform distribution ejector, then mixed air enters the flue gas-air mixer for disturbance mixing, full contact heat exchange between the flue gas and the cold air is guaranteed, condensed droplets are formed, and the condensed droplets are condensed and grow up. After the mixed air enters the water collector, the liquid drops are further condensed and grow up. The vertical flue cyclone plate liquid remover throws liquid drops onto the flue wall, and the liquid drops flow into the liquid collecting tank to be discharged. The flat demister with the horizontal flue intercepts liquid drops on demister blades, grows up along with the liquid drops, and falls into a liquid collecting tank to be discharged. And the moisture content of the saturated wet flue gas is reduced, and the saturated wet flue gas is discharged after the fog drops are removed.
Taking a certain wet desulphurization outlet saturated wet flue gas as an example, the flue gas flow rate is 100 ten thousand Nm3/h, the flue gas temperature is 50.8 ℃, and the moisture content is 12.9%. Two working conditions of winter and summer are considered. In winter, the outdoor environment temperature is-4.0 ℃, and the relative humidity is 46 percent; in summer, the outdoor temperature is 28 ℃ and the relative humidity is 76%.
According to the white elimination requirement of most provinces in the north such as Tianjin and Hebei, the saturated smoke is controlled within 45 ℃ after being condensed in winter and within 48 ℃ after being condensed in summer. According to calculation, the amount of the blended natural cold air accounts for 29 percent of the smoke in winter, namely 29 ten thousand Nm3/h, and the generated condensed water is 3.5 t/h. The amount of the blended natural cold air accounts for 17 percent of the smoke in winter, namely 17 ten thousand Nm3/h, and the generated condensed water is 0.17 t/h.
The condensation and white elimination device is arranged on a direct exhaust chimney at the outlet of the desulfurizing tower, the diameter of the chimney is 6m, and the flow velocity of flue gas is 13 m/s. In winter, 29 ten thousand Nm3/h of natural cold air is mixed, and the flue gas flow rate of the chimney is 15.4 m/s. In summer, natural cold air is mixed for 17 ten thousand Nm3/h, and the flue gas flow velocity of the chimney is 14 m/s.
The condensation white elimination device is arranged 1000mm away from the bottom of the chimney. The air uniform distribution ejector, the flue gas air mixer and the water collector are sequentially arranged along the flow direction of flue gas. The clear distance from the nozzle outlet of the air uniformly distributed ejector to the flue gas-air mixer is 400 mm. The clear distance from the flue gas air mixer to the water collector is 3000 mm. The straight section clear distance of the rear flue of the water collector on the vertical flue is 15000 mm.
The air uniform distribution ejector 3 is arranged. Each layer comprises 110 nozzles and 12 main pipes, the caliber of the main pipes is DN250, the arrangement mode of the air uniformly distributed ejectors of each layer is the same, and the interlayer spacing is 800 mm. Each layer of main pipe is arranged on the cross section of the flue at equal intervals. The nozzle is communicated with the main pipe and arranged on the main pipe in parallel, and the nozzle is arranged in parallel with the smoke and the outlet faces the direction of the smoke flow. The distance between the nozzles is 500mm, and the nozzles are uniformly arranged on the cross section of the flue in a rectangular shape. The nozzle is a short pipe with the length of 100mm and the caliber DN100, the flow velocity in the pipe in winter is 35m/s, and the flow velocity in the pipe in summer is 23 m/s.
The flue gas air mixer comprises two layers of turbulent flow tubes. Each layer of turbulent flow pipe is composed of a plurality of equidistant pipelines. The first layer turbulence pipe close to the air uniform distribution ejector is arranged in parallel with the nozzle, the second layer turbulence pipe is parallel to the first layer turbulence pipe, the distance between the two layers of turbulence pipe is 500mm, and each turbulence pipe of the second layer is equidistant to two adjacent turbulence pipes of the first layer. And the orifice diameter of the turbulent flow tube DN 150.
The water collector of the flue consists of a cyclone plate liquid remover and a water outlet. The cyclone plate liquid remover comprises an inner cylinder with a closed cone bucket and blades. The straight section and the conical section of the inner cylinder are of a closed structure and are parallel to the flue gas, and the tip of the conical hopper is opposite to the flow direction of the flue gas. The cone angle of the cone bucket is 100 degrees. The diameter of the inner cylinder is 1000mm of the inner diameter of the flue. The inner edges of the blades are parallel to the inner cylinder and are uniformly arranged along the straight cylinder section of the inner cylinder. The blade is smoothly twisted to the flue wall fixing plate anticlockwise, and the horizontal lead angle of the outer edge of the blade is 40 degrees. The bottom of the outer edge of each blade is provided with a condensate collecting tank along the inner wall of the flue, and the bottom of the outer side of each collecting tank is provided with 4 water outlets, wherein each water outlet is DN 80.
During operation, saturated wet flue gas firstly passes through the air uniform distribution ejector and is mixed with natural cold air sprayed by the air uniform distribution ejector, then mixed air enters the flue gas-air mixer for disturbance mixing, full contact heat exchange between the flue gas and the cold air is guaranteed, condensed droplets are formed, and the condensed droplets are condensed and grow up. And after the mixed air enters the water collector, the cyclone plate liquid remover forms cyclone gas of the mixed air, and liquid drops continue to be condensed and thrown onto the wall of the flue and flow into the liquid collecting tank to be discharged. And (4) reducing the moisture content of the saturated wet flue gas, removing fog drops, and discharging the flue gas out of a chimney.
The horizontal flues are identical to the vertical flues in configuration and parameters except for the collectors.
The horizontal flue water collector consists of a flat plate demister and a water outlet. The vertical section of the flat demister is arranged, the bottom of the demister is provided with a through long water collecting tank, and the bottom of the water collecting tank is provided with a water outlet. The horizontal flue demister is collected by condensing the liquid droplets driven by flue gas to collide with demister blades for interception. The collector section flow rate is typically 3-5m/s, and too high a flow rate can cause re-entrainment of liquid droplets.
The flat demister with the horizontal flue intercepts liquid drops on demister blades, grows up along with the liquid drops, and falls into a liquid collecting tank to be discharged.
The technical scheme of the invention has the following advantages and effects:
(1) the invention develops a new method, adopts natural cold air as a cold source, recovers water and eliminates white from saturated wet flue gas, does not need high-quality cooling water, a heat exchanger and a cooling tower, and has the advantages of low investment, small occupied area, reliable source of the cold source and strong adaptability.
(2) The invention adopts natural cold air to condense the flue gas, which is equivalent to mixing with natural air in front of the chimney, thereby reducing the occurrence of white smoke and avoiding the occurrence of chimney rain while collecting water.
(3) Through rational configuration natural cold wind injection and vortex mixing device, realized that natural cold wind and flue gas fully exchange heat, no inside operation part, reliable and stable efficient.
(4) The invention not only realizes the purpose of water recovery, but also can visually detect white smoke, and meanwhile, partial pollutants in the smoke are removed in a synergistic manner through the formation and collection of liquid drops.
(5) The invention can realize water collection and white elimination for both the horizontal flue and the vertical flue. The horizontal flue adopts the flat demister, and the effect is stable. The vertical flue adopts the cyclone plate liquid remover, so that high-efficiency liquid removal is realized, and the adaptability is strong.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A flue gas treatment device, comprising:
the air uniform distribution ejector, the flue gas air mixer and the water collector are arranged in the flue and are sequentially arranged along the flow direction of flue gas;
the air uniform distribution ejector is connected with an air source and used for providing air into the flue; the flue gas passes through the air uniform distribution ejector and the flue gas air mixer in sequence, is condensed into liquid and is collected by the water collector.
2. The flue gas treatment device according to claim 1, wherein a single layer of the air injector comprises:
a plurality of nozzles and a plurality of main tubes in communication with the plurality of nozzles, the plurality of main tubes connected to the air source;
wherein, evenly arrange between a plurality of main pipe on the cross-section of flue, a plurality of nozzles set up towards the flow direction of flue gas.
3. The flue gas treatment device according to claim 2, wherein the flue gas air mixer comprises:
a first turbulent tube layer close to the air uniformly-distributed injectors and a second turbulent tube layer far away from the air uniformly-distributed injectors;
the first turbulent tube layer and the second turbulent tube layer are respectively formed by arranging a plurality of turbulent tubes;
the first turbulent tube layer and the second turbulent tube layer are arranged in a parallel and staggered mode.
4. The flue gas treatment device according to claim 1,
when the flue is a vertical flue, the water collector comprises a cyclone plate liquid remover and a water outlet.
5. The flue gas treatment device according to claim 4,
the cyclone plate liquid remover comprises an inner cylinder with a closed conical hopper and blades; the straight cylinder section and the conical section of the inner cylinder are of closed structures and are parallel to the flow direction of the flue gas, and the tip end of the conical hopper is opposite to the flow direction of the flue gas.
6. The flue gas treatment device according to claim 5,
the diameter of the inner cylinder is one fifth to one tenth of the inner diameter of the flue; the inner edges of the blades are parallel to the inner barrel and are uniformly arranged along the straight barrel section of the inner barrel, the blades are smoothly twisted to the flue wall fixing plate anticlockwise, and the horizontal lift angle of the outer edges of the blades is 35-50 degrees.
7. The flue gas treatment device according to claim 1,
when the flue is a horizontal flue, the water collector comprises a flat-plate demister and a water outlet.
8. The flue gas treatment device according to claim 7,
the vertical cross section of the flat demister is arranged, a through long water collecting tank is arranged at the bottom of the flat demister, and a water outlet is arranged at the bottom of the water collecting tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210164089.XA CN114642951A (en) | 2022-02-22 | 2022-02-22 | Flue gas treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210164089.XA CN114642951A (en) | 2022-02-22 | 2022-02-22 | Flue gas treatment device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201978606U (en) * | 2010-12-30 | 2011-09-21 | 上海瑞亚安环保设备有限公司 | Water-drop shaped tubular demister and demister device |
| CA2745167A1 (en) * | 2010-07-06 | 2012-01-06 | Babcock & Wilcox Power Generation Group, Inc. | Integrated flue gas dehumidification and wet cooling tower system |
| CN207533076U (en) * | 2017-10-27 | 2018-06-26 | 江苏省冶金设计院有限公司 | A kind of metallurgy mixes cooling air unit with rotary hearth furnace high-temperature flue gas |
| US10010810B1 (en) * | 2012-11-09 | 2018-07-03 | Arkansas State University—Jonesboro | Condensing heat exchanger system |
| CN108310929A (en) * | 2018-01-31 | 2018-07-24 | 浙江天蓝环保技术股份有限公司 | A kind of desulfurization tail cigarette disappears white technique and device |
| CN110567290A (en) * | 2019-10-15 | 2019-12-13 | 杭州蕴泽环境科技有限公司 | Device and method for eliminating white smoke from unsaturated high-humidity tail gas |
| CN210159324U (en) * | 2019-03-12 | 2020-03-20 | 南京碧林环保科技有限公司 | Cooling and dehumidifying combined smoke whitening device |
| CN212188585U (en) * | 2020-03-26 | 2020-12-22 | 江苏世清环保科技有限公司 | Coal fired boiler SCR denitration reactor inlet flue venturi bar grid mixing device |
-
2022
- 2022-02-22 CN CN202210164089.XA patent/CN114642951A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2745167A1 (en) * | 2010-07-06 | 2012-01-06 | Babcock & Wilcox Power Generation Group, Inc. | Integrated flue gas dehumidification and wet cooling tower system |
| CN201978606U (en) * | 2010-12-30 | 2011-09-21 | 上海瑞亚安环保设备有限公司 | Water-drop shaped tubular demister and demister device |
| US10010810B1 (en) * | 2012-11-09 | 2018-07-03 | Arkansas State University—Jonesboro | Condensing heat exchanger system |
| CN207533076U (en) * | 2017-10-27 | 2018-06-26 | 江苏省冶金设计院有限公司 | A kind of metallurgy mixes cooling air unit with rotary hearth furnace high-temperature flue gas |
| CN108310929A (en) * | 2018-01-31 | 2018-07-24 | 浙江天蓝环保技术股份有限公司 | A kind of desulfurization tail cigarette disappears white technique and device |
| CN210159324U (en) * | 2019-03-12 | 2020-03-20 | 南京碧林环保科技有限公司 | Cooling and dehumidifying combined smoke whitening device |
| CN110567290A (en) * | 2019-10-15 | 2019-12-13 | 杭州蕴泽环境科技有限公司 | Device and method for eliminating white smoke from unsaturated high-humidity tail gas |
| CN212188585U (en) * | 2020-03-26 | 2020-12-22 | 江苏世清环保科技有限公司 | Coal fired boiler SCR denitration reactor inlet flue venturi bar grid mixing device |
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