CN111912243A - Tail gas calcining device for titanium dioxide production and using method thereof - Google Patents
Tail gas calcining device for titanium dioxide production and using method thereof Download PDFInfo
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- CN111912243A CN111912243A CN202010685255.1A CN202010685255A CN111912243A CN 111912243 A CN111912243 A CN 111912243A CN 202010685255 A CN202010685255 A CN 202010685255A CN 111912243 A CN111912243 A CN 111912243A
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- tail gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a tail gas calcining device for titanium dioxide production and a using method thereof, wherein the tail gas calcining device comprises a base, and a cooling device, a dry filtering device and a wet filtering device which are sequentially connected with one another are respectively arranged on the base; the cooling device is used for cooling and exchanging heat of the input tail gas; the dry filtering device is used for carrying out dry filtering on the tail gas subjected to temperature reduction and heat exchange by the temperature reduction device; wet filter equipment is used for carrying out wet-type filtration to the tail gas through dry filter equipment dry-type filtration, can cool down the heat exchange to tail gas through the heat sink to can utilize the waste heat of tail gas, dry filter equipment and wet filter equipment cooperation carry out dual filtration, thereby can carry out abundant filtration, environmental protection and energy saving to tail gas.
Description
Technical Field
The invention relates to the technical field of titanium dioxide production, in particular to a tail gas calcining device for titanium dioxide production and a using method thereof.
Background
Titanium dioxide is the most main white pigment widely used at present, and is widely applied to the fields of coating, papermaking, printing ink and the like, and the current production process flow of the titanium dioxide by the sulfuric acid method is as follows: the method comprises the steps of carrying out acidolysis on titanium ore or titanium slag to generate titanium liquid, carrying out sedimentation, crystallization and concentration on the titanium liquid to obtain pure concentrated titanium liquid, carrying out hydrolysis, washing and bleaching to obtain pure metatitanic acid, carrying out salt treatment on the metatitanic acid, then calcining in a rotary kiln, carrying out dry grinding and then carrying out post-treatment, wherein the post-treatment comprises the working procedures of pulping, dispersing, sanding, grading, coating, washing, filtering, drying, airflow crushing and the like.
Disclosure of Invention
The invention aims to solve the problems and provide a tail gas calcining device for titanium dioxide production and a using method thereof, which have the advantages of utilizing the waste heat of tail gas, fully filtering the tail gas, protecting the environment, saving energy and the like, and are explained in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a tail gas calcining device for titanium dioxide production, which comprises a base, wherein a cooling device, a dry filtering device and a wet filtering device which are sequentially connected with one another are respectively arranged on the base;
the cooling device is used for cooling and exchanging heat of the input tail gas;
the dry filtering device is used for carrying out dry filtering on the tail gas subjected to temperature reduction and heat exchange by the temperature reduction device;
the wet filtering device is used for carrying out wet filtering on the tail gas subjected to dry filtering by the dry filtering device.
Preferably, the cooling device comprises an outer heat-insulating shell, a plurality of spiral air guide parts which are uniformly distributed are fixedly arranged in the outer heat-insulating shell from top to bottom, a heat exchange pipe assembly is arranged on the outer side of each spiral air guide part, and a spiral air guide part is arranged in each spiral air guide part.
Preferably, the spiral air guide part comprises an air guide pipeline, a central shaft is arranged in the central axis of the air guide pipeline, a spiral rib plate used for forming a spiral air guide channel in the air guide pipeline is arranged between the central shaft and the inner side wall of the air guide pipeline, the two adjacent air guide pipelines are communicated with each other through an air guide pipe, two support plates which are distributed in parallel are fixedly connected to the lower side of the outer heat-insulating shell, the lower sides of the two support plates are fixedly connected to the base, and one side of one air guide pipeline is connected with an air inlet pipe used for inputting tail gas into the base.
As preferred, dry filter equipment is including doing the filtration box, and dry filtration box is inside to be offered evenly distributed's more than two and to rotate the chamber, and close to two and rotate and communicate each other through interface channel between the chamber, and every inside rotation that rotates the chamber is provided with futilely crosses the filter core, the one end opening in rotation chamber, opening part are provided with and are used for carrying out the apron sealed to it, are close to on the apron and rotate the chamber position and be provided with the observation window.
As preferred, dry filtration box is close to the rotation chamber one side that initial inflow tail gas seted up inlet channel, and inlet channel's opening part is connected with the first gas-supply pipe of being connected with the heat sink gas outlet, dry filtration box is close to rotation chamber one side that terminal outflow tail gas seted up outlet channel, and outlet channel's opening part is connected with the second gas-supply pipe of being connected with wet filter equipment air inlet.
Preferably, the dry filter element comprises a sleeve shaft, one end of the sleeve shaft is fixedly connected to the inner side wall of the rotating cavity, the outer side of the sleeve shaft is rotatably connected with a sleeve, the outer side of the sleeve shaft is fixedly connected with a plurality of fan plates which are uniformly distributed by taking the axis of the sleeve shaft as the center, and a filter screen is arranged in the middle of each fan plate.
Preferably, the wet filtering device comprises a wet filtering box body, the second gas pipe penetrates into the filtering box body from the side wall of the bottom of the wet filtering box body, a stirring assembly is arranged in the wet filtering box body and is driven to rotate by a motor fixedly mounted on the upper side of the wet filtering box body, a bubble blocking assembly used for prolonging the contact time of tail gas and liquid and pressurizing is arranged in the middle of the wet filtering box body, a liquid inlet pipe is fixedly connected to the side wall of the upper end of the wet filtering box body, and a liquid outlet pipe is fixedly connected to the side wall of the lower end of the wet filtering box body.
Preferably, the bubble blocking assembly comprises an upper baffle and a lower baffle which are distributed up and down, the upper baffle and the lower baffle are in inverted V shapes with narrow tops and wide bottoms, the top tip of the lower baffle is open, vent holes are formed in the lower sides of the two ends of the upper baffle, and the height position of each vent hole is lower than that of the top tip opening of the lower baffle.
Preferably, the stirring assembly comprises a stirring shaft, a plurality of groups of stirring rods which are uniformly distributed are arranged on the outer side of the stirring shaft along the axial direction of the stirring shaft, each group of stirring rods comprises three stirring rods which are uniformly distributed by taking the axis of the stirring shaft as the center, and the stirring shaft is rotatably connected with the upper baffle through a sealing bearing.
The use method of the tail gas calcining device for titanium dioxide production is characterized by comprising the following steps: the method comprises the following steps:
leading tail gas into one end of an air guide pipeline arranged at the lowest part through the air inlet pipe, penetrating a spiral air guide part arranged in the air guide pipeline, leading the tail gas into the rest air guide pipelines arranged above the air guide pipeline from the other end of the air guide pipeline through the air guide pipeline, connecting the air guide pipelines in series through the air guide pipes, and performing heat exchange and cooling with a heat exchange pipe assembly arranged outside the air guide pipeline;
tail gas subjected to heat exchange and temperature reduction through the temperature reduction device enters a rotating cavity of a dry filtering device through a first gas pipe, a dry filtering core is arranged in each rotating cavity to filter the tail gas, and when the dry filtering core is cleaned and replaced, a cover plate is opened, and the dry filtering core is taken out of the rotating cavity;
the rotating cavities are connected in series through the connecting channel, and when tail gas enters the rotating cavities, the fan plate and the filter screen can be pushed to rotate, so that the tail gas is filtered;
the tail gas filtered by the dry filtering device is introduced into the inner bottom of the wet filtering box body through a second gas pipe, wherein a pump body used for pressurizing gas conveyed into the wet filtering box body is arranged on the second gas pipe, liquid for filtering the tail gas is filled in the wet filtering box body, the tail gas rises in the wet filtering box body and passes through the tip opening of the lower baffle plate to the top wall of the upper side of the upper baffle plate, when too much gas is generated, the gas passes through the lower sides of the two ends of the upper baffle plate and is provided with vent holes to rise to the top of the wet filtering box body under the action of air pressure, and is discharged through the vent holes formed in the upper side of the wet filtering box;
the wet filter box body is internally provided with a stirring component which is driven by a motor to rotate, so that liquid is stirred.
Has the advantages that: 1. the tail gas can be subjected to cooling heat exchange through the cooling device, so that the waste heat of the tail gas can be utilized, and the dry filtering device and the wet filtering device are matched for double filtering, so that the tail gas can be sufficiently filtered, and the device is environment-friendly and energy-saving;
2. the spiral air guide part of the cooling device can improve the circulation length of the waste gas, improve the heat exchange efficiency with the heat exchange pipe assembly and save the occupied space;
3. the dry filter element of the dry filter device can divide the rotating cavity into a plurality of fan-shaped filter spaces, and the dry filter element is matched with the rotation of the dry filter element, so that the tail gas filtering effect and efficiency are improved;
4. the bubble stop component of the wet filtering device is matched with the stirring component, so that the contact time and the contact pressure of the tail gas and the liquid can be improved, and the full contact of the gas and the liquid is greatly improved.
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 is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of the cooling device of the present invention;
FIG. 3 is a cross-sectional view of a dry filter apparatus of the present invention;
FIG. 4 is a cross-sectional view of a wet filter assembly of the present invention;
fig. 5 is a perspective view of fig. 1 of the present invention.
The reference numerals are explained below: 1. a base; 2. a cooling device; 201. an outer heat-insulating housing; 202. an air duct; 203. an air inlet pipe; 204. a support plate; 205. a spiral air guide member; 205a, an air guide duct; 205b, a central axis; 205c, helical ribs; 206. a heat exchange tube assembly; 3. a dry filtration device; 301. a dry filtration tank; 302. a rotation chamber; 303. a dry filter element; 303a, a sleeve; 303b, a sleeve shaft; 303c, a filter screen; 303d, a fan plate; 304. an air intake passage; 305. a connecting channel; 306. an air outlet channel; 307. a cover plate; 308. a transparent viewing window; 309. a sealing gasket; 4. a wet filtration device; 401. a wet filtration tank; 402. a motor; 403. a bubble block assembly; 403a, an upper baffle; 403b, a vent hole; 403c, a lower baffle; 404. a stirring assembly; 404a, a stirring shaft; 404b, a stirring rod; 405. sealing the bearing; 406. a liquid inlet pipe; 407. a liquid outlet pipe; 5. a first gas delivery pipe; 6. a second air delivery conduit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1-5, the invention provides a tail gas calcining device for titanium dioxide production, which comprises a base 1, wherein the base 1 is respectively provided with a cooling device 2, a dry filtering device 3 and a wet filtering device 4 which are sequentially connected with one another;
the cooling device 2 is used for cooling and exchanging heat of the input tail gas;
the dry filtering device 3 is used for carrying out dry filtering on the tail gas subjected to temperature reduction and heat exchange by the temperature reduction device 2;
the wet filtering device 4 is used for performing wet filtering on the tail gas subjected to dry filtering by the dry filtering device 3.
The cooling device 2 comprises an outer heat-insulating shell 201, a plurality of spiral air guide members 205 which are uniformly distributed are fixedly arranged in the outer heat-insulating shell 201 from top to bottom respectively, a heat exchange tube assembly 206 is arranged outside each spiral air guide member 205, and the spiral air guide members 205 are arranged in each spiral air guide member 205. The spiral air guide 205 may increase the flow distance of the exhaust gas so that the exhaust gas gives off heat to be sufficiently in contact with the heat exchange tube assembly 206.
The spiral air guide part 205 comprises an air guide pipeline 205a, the heat exchange pipe assembly 206 is spirally wound outside the air guide pipeline 205a, a central shaft 205b is arranged at the central axis inside the air guide pipeline 205a, a spiral rib plate 205c used for forming a spiral air guide channel inside the air guide pipeline 205a is arranged between the central shaft 205b and the inner side wall of the air guide pipeline 205a, two adjacent air guide pipelines 205a are communicated with each other through an air guide pipe 202, two support plates 204 which are distributed in parallel are fixedly connected to the lower side of the outer heat preservation shell 201, the lower sides of the two support plates 204 are fixedly connected to the base 1, and one side of one air guide pipeline 205a is connected with an air inlet pipe 203 used for inputting tail.
Dry filter equipment 3 includes dry filter box 301, dry filter box 301 is inside to be offered evenly distributed's more than two and rotates chamber 302, communicate each other through connecting channel 305 between the chamber 302 is rotated to two next-door neighbour, every inside rotation that rotates chamber 302 is provided with futilely filters core 303, the one end opening of rotating chamber 302, the opening part is provided with and is used for carrying out sealed apron 307 to it, be close to on the apron 307 and rotate chamber 302 position and be provided with observation window 308, apron 307 is close to and is provided with seal ring 309 on one side of rotating chamber 302, thereby realize rotating chamber 302's sealed.
The dry filter element 303 comprises a sleeve shaft 303b, one end of the sleeve shaft 303b is fixedly connected to the inner side wall of the rotating cavity 302, the outer side of the sleeve shaft 303b is rotatably connected with a sleeve 303a, the outer side of the sleeve 303a is fixedly connected with a plurality of fan plates 303d which are uniformly distributed by taking the axis thereof as the center, and a filter screen 303c is arranged in the middle of each fan plate 303 d.
The wet filtering device 4 comprises a wet filtering box 401, a second gas pipe 6 penetrates into the filtering box 401 from the bottom side wall of the wet filtering box 401, a stirring component 404 is arranged in the wet filtering box 401, the stirring component 404 is driven to rotate by a motor 402 fixedly arranged on the upper side of the wet filtering box 401, a bubble stopping component 403 for prolonging the contact time of tail gas and liquid and pressurizing is arranged in the middle of the wet filtering box 401, a liquid inlet pipe 406 is fixedly connected to the upper end side wall of the wet filtering box 401, and a liquid outlet pipe 407 is fixedly connected to the lower end side wall of the wet filtering box 401.
The bubble stopper 403 includes an upper baffle 403a and a lower baffle 403c, which are distributed vertically, the upper baffle 403a and the lower baffle 403c are both in an inverted V shape with a narrow top and a wide bottom, the top of the lower baffle 403c is open at the top, the lower sides of the two ends of the upper baffle 403a are provided with vent holes 403b, and the height of the vent holes 403b is lower than the height of the top of the lower baffle 403 c.
The stirring assembly 404 comprises a stirring shaft 404a, a plurality of groups of stirring rods 404b which are uniformly distributed are arranged on the outer side of the stirring shaft 404a along the axial direction of the stirring shaft, each group comprises three stirring rods 404b which are uniformly distributed by taking the axial line of the stirring shaft 404a as the center, and the stirring shaft 404a is rotatably connected with the upper baffle 403a through a sealing bearing 405.
The use method of the tail gas calcining device for titanium dioxide production comprises the following steps:
1, leading tail gas into one end of an air guide pipeline 205a arranged at the lowest part through an air inlet pipe 203, penetrating through a spiral air guide part 205 arranged in the air guide pipeline 205a, leading the tail gas into the other air guide pipelines 205a arranged above the air guide pipeline 205a through an air guide pipe 202 from the other end of the air guide pipeline 205a, and leading the tail gas into the other air guide pipelines 205a arranged above the air guide pipeline 202, wherein the air guide pipelines 205a are mutually communicated in series through the air guide pipes 202 and carry out heat exchange and temperature reduction with a heat;
2, tail gas subjected to heat exchange and temperature reduction through the temperature reduction device 2 passes through the first gas transmission pipe 5 to enter the rotating cavities 302 of the dry filtering device 3, a dry filtering core 303 arranged in each rotating cavity 302 realizes the filtration of the tail gas, and when the dry filtering core 303 is cleaned and replaced, the cover plate 307 is opened, and the dry filtering core 303 is taken out of the rotating cavity 302;
3 the rotating cavities 302 are connected in series through a connecting channel 305, and when the tail gas enters the rotating cavities 302, the fan plate 303d and the filter screen 303c can be pushed to rotate, so that the tail gas is filtered;
4, the tail gas filtered by the dry filtering device 3 is introduced into the bottom of the wet filtering box body 401 through a second gas pipe 6, wherein a pump body used for pressurizing gas conveyed into the wet filtering box body 401 is arranged on the second gas pipe 6, liquid for filtering the tail gas is filled in the wet filtering box body 401, the liquid in the wet filtering box body 401 rises, the tail gas penetrates through the tip end of the lower baffle 403c and is opened to the top wall of the upper side of the upper baffle 403a, when too much gas exists, the gas penetrates through the lower sides of the two ends of the upper baffle 403a and is provided with vent holes 403b to rise to the top of the wet filtering box body 401 under the action of air pressure, and the gas is discharged through vent holes arranged on the upper side of the wet filtering;
5, a stirring component 404 is arranged in the wet filtering box body 401 and driven by a motor 402 to rotate, so that the liquid is stirred.
1. The tail gas can be subjected to cooling heat exchange through the cooling device 2, so that the waste heat of the tail gas can be utilized, and the dry filtering device 3 and the wet filtering device 4 are matched for double filtering, so that the tail gas can be sufficiently filtered, and the device is environment-friendly and energy-saving;
2. the spiral air guide part 205 of the cooling device 2 can improve the circulation length of the waste gas, improve the heat exchange efficiency with the heat exchange tube assembly 206 and save the occupied space;
3. the dry filter element 303 of the dry filter device 3 can divide the rotating cavity 302 into a plurality of fan-shaped filter spaces, and the tail gas filtering effect and efficiency are improved by matching with the rotation of the dry filter element 303;
4. the bubble-retaining assembly 403 of the wet filtration device 4 in combination with the stirring assembly 404 can increase the contact time and contact pressure between the tail gas and the liquid, thereby greatly increasing the sufficient contact between the gas and the liquid.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A tail gas calcining device for titanium dioxide production and a using method thereof are characterized in that: comprises a base (1), wherein a cooling device (2), a dry filtering device (3) and a wet filtering device (4) which are sequentially connected with one another are respectively arranged on the base (1);
the cooling device (2) is used for cooling and exchanging heat of the input tail gas;
the dry filtering device (3) is used for carrying out dry filtering on the tail gas subjected to temperature reduction and heat exchange by the temperature reduction device (2);
the wet filtering device (4) is used for carrying out wet filtering on the tail gas subjected to dry filtering by the dry filtering device (3).
2. The tail gas calcining device for titanium dioxide production according to claim 1, characterized in that: the cooling device (2) comprises an outer heat-insulating shell (201), a plurality of spiral air guide parts (205) which are uniformly distributed are fixedly arranged in the outer heat-insulating shell (201) from top to bottom respectively, a heat exchange pipe assembly (206) is arranged on the outer side of each spiral air guide part (205), and a spiral air guide part (205) is arranged in each spiral air guide part (205).
3. The tail gas calcining device for titanium dioxide production according to claim 2, characterized in that: the spiral air guide part (205) comprises an air guide pipeline (205a), a central shaft (205b) is arranged at the inner central axis of the air guide pipeline (205a), a spiral rib plate (205c) used for forming a spiral air guide channel in the air guide pipeline (205a) is arranged between the central shaft (205b) and the inner side wall of the air guide pipeline (205a), two adjacent air guide pipelines (205a) are communicated with each other through an air guide pipe (202), two support plates (204) which are distributed in parallel are fixedly connected to the lower side of the outer heat-preservation shell (201), the lower sides of the two support plates (204) are fixedly connected to the base (1), and one side of one air guide pipeline (205a) is connected with an air inlet pipe (203) used for inputting tail gas into the air.
4. The tail gas calcining device for titanium dioxide production according to claim 1, characterized in that: dry filter equipment (3) including doing filter box (301), do filter box (301) inside offer more than two evenly distributed and rotate chamber (302), communicate each other through connecting channel (305) between adjacent two rotation chambers (302), every rotates the inside rotation in chamber (302) and is provided with futilely and crosses filter core (303), the one end opening in rotation chamber (302), the opening part is provided with and is used for carrying out sealed apron (307) to it, and it is provided with observation window (308) to be close to rotation chamber (302) position on apron (307).
5. The tail gas calcining device for titanium dioxide production according to claim 4, characterized in that: do and filter box (301) and be close to rotation chamber (302) one side of initial inflow tail gas and seted up inlet channel (304), the opening part of inlet channel (304) is connected with first gas-supply pipe (5) of being connected with heat sink (2) gas outlet, do and filter box (301) and be close to rotation chamber (302) one side of terminal outflow tail gas and seted up outlet channel (306), the opening part of outlet channel (306) is connected with second gas-supply pipe (6) of being connected with wet filter equipment (4) air inlet.
6. The tail gas calcining device for titanium dioxide production according to claim 4, characterized in that: dry filter core (303) including sleeve axle (303b), the one end fixed connection of sleeve axle (303b) is connected with sleeve (303a) on the inside wall of rotating chamber (302), the outside of sleeve axle (303b) is rotated, the outside fixed connection of sleeve (303a) uses its axis as a plurality of fan board (303d) of center evenly distributed, the middle part position of fan board (303d) is provided with filter screen (303 c).
7. The tail gas calcining device for titanium dioxide production according to claim 1, characterized in that: the wet filtering device (4) comprises a wet filtering box body (401), the second air conveying pipe (6) penetrates into the filtering box body (401) from the side wall of the bottom of the wet filtering box body (401), a stirring assembly (404) is arranged in the wet filtering box body (401), the stirring assembly (404) is driven to rotate by a motor (402) fixedly mounted on the upper side of the wet filtering box body (401), a bubble blocking assembly (403) used for prolonging the contact time of tail gas and liquid and pressurizing is arranged in the middle of the wet filtering box body (401), the side wall of the upper end of the wet filtering box body (401) is fixedly connected with an air inlet pipe (406), and the side wall of the lower end of the wet filtering box body (401) is fixedly connected with an air outlet pipe (407).
8. The tail gas calcining device for titanium dioxide production according to claim 7, characterized in that: the bubble stop assembly (403) comprises an upper baffle plate (403a) and a lower baffle plate (403c) which are distributed up and down, the shapes of the upper baffle plate (403a) and the lower baffle plate (403c) are inverted V-shaped with a narrow top and a wide bottom, the top tip of the lower baffle plate (403c) is open, vent holes (403b) are formed in the lower sides of the two ends of the upper baffle plate (403a), and the height position of each vent hole (403b) is lower than the height position of the top tip opening of the lower baffle plate (403 c).
9. The tail gas calcining device for titanium dioxide production according to claim 7, characterized in that: the stirring assembly (404) comprises a stirring shaft (404a), a plurality of groups of stirring rods (404b) which are uniformly distributed are arranged on the outer side of the stirring shaft (404a) along the axial direction of the stirring shaft, each group of stirring rods (404b) comprises three stirring rods (404b) which are uniformly distributed by taking the axial line of the stirring shaft (404a) as the center, and the stirring shaft (404a) is rotatably connected with the upper baffle (403a) through a sealing bearing (405).
10. The use method of the tail gas calcining device for titanium dioxide production according to claim 1, characterized in that: the method comprises the following steps:
(1) leading tail gas into one end of an air guide pipeline (205a) arranged at the lowest part through the air inlet pipe (203), penetrating through a spiral air guide part (205) arranged in the air guide pipeline (205a), leading the tail gas into other air guide pipelines (205a) arranged above the air guide pipeline (202) from the other end of the air guide pipeline (205a), and leading the tail gas into the other air guide pipelines (205a) arranged above the air guide pipeline (202), wherein the air guide pipelines (205a) are communicated in series through the air guide pipelines (202) and carry out heat exchange and temperature reduction with a heat exchange pipe assembly (206) arranged at the outer side of the air guide;
(2) tail gas subjected to heat exchange and temperature reduction through the temperature reduction device (2) passes through the first gas conveying pipe (5) to enter the rotating cavities (302) of the dry filtering device (3), a dry filtering core (303) arranged in each rotating cavity (302) is used for filtering the tail gas, when the dry filtering core (303) is cleaned and replaced, the cover plate (307) is opened, and the dry filtering core (303) is taken out of the rotating cavity (302);
(3) the rotating cavities (302) are connected in series through connecting channels (305), and when tail gas enters the rotating cavities (302), the fan plates (303d) and the filter screens (303c) can be pushed to rotate, so that the tail gas is filtered;
(4) the tail gas filtered by the dry filtering device (3) is introduced into the inner bottom of the wet filtering box body (401) through a second gas pipe (6), wherein a pump body used for pressurizing gas conveyed into the wet filtering box body (401) is arranged on the second gas pipe (6), liquid for filtering the tail gas is filled in the wet filtering box body (401), the liquid of the tail gas in the wet filtering box body (401) rises, the tail gas penetrates through the tip opening of the lower baffle plate (403c) and the top wall of the upper side of the upper baffle plate (403a), when the gas is excessive, the gas penetrates through the lower sides of the two ends of the upper baffle plate (403a) and is provided with vent holes (403b) to rise to the top of the wet filtering box body (401) under the action of air pressure, and the tail gas is discharged through vent holes formed in the upper side of the wet filtering box body;
(5) a stirring component (404) is arranged in the wet filtering box body (401) and is driven by a motor (402) to rotate, so that liquid is stirred.
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| CN202010685255.1A CN111912243A (en) | 2020-07-16 | 2020-07-16 | Tail gas calcining device for titanium dioxide production and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107684782A (en) * | 2017-08-31 | 2018-02-13 | 崔高银 | A kind of exhaust treatment system with dust filtering device |
| CN109605934A (en) * | 2018-12-29 | 2019-04-12 | 重庆富美包装印务有限公司 | Printing machine waste heat recovery of circulatory system |
| US20190240618A1 (en) * | 2018-02-07 | 2019-08-08 | Shun-Tsung Lu | Exhaust purification system |
| CN209423192U (en) * | 2018-12-27 | 2019-09-24 | 广西南宁科环环保科技有限公司 | A kind of garbage incinerating tail gas processing unit |
| CN209985060U (en) * | 2019-04-25 | 2020-01-24 | 河南仙于山环保科技有限公司 | Chemical industry equipment tail gas processing apparatus |
| CN210321266U (en) * | 2019-08-22 | 2020-04-14 | 无锡市新浩锅炉辅机有限公司 | High-temperature tail gas treatment device for boiler |
| CN210441514U (en) * | 2019-05-11 | 2020-05-01 | 北京嘉德实创制冷科技有限公司 | Medicine refrigerator |
-
2020
- 2020-07-16 CN CN202010685255.1A patent/CN111912243A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107684782A (en) * | 2017-08-31 | 2018-02-13 | 崔高银 | A kind of exhaust treatment system with dust filtering device |
| US20190240618A1 (en) * | 2018-02-07 | 2019-08-08 | Shun-Tsung Lu | Exhaust purification system |
| CN209423192U (en) * | 2018-12-27 | 2019-09-24 | 广西南宁科环环保科技有限公司 | A kind of garbage incinerating tail gas processing unit |
| CN109605934A (en) * | 2018-12-29 | 2019-04-12 | 重庆富美包装印务有限公司 | Printing machine waste heat recovery of circulatory system |
| CN209985060U (en) * | 2019-04-25 | 2020-01-24 | 河南仙于山环保科技有限公司 | Chemical industry equipment tail gas processing apparatus |
| CN210441514U (en) * | 2019-05-11 | 2020-05-01 | 北京嘉德实创制冷科技有限公司 | Medicine refrigerator |
| CN210321266U (en) * | 2019-08-22 | 2020-04-14 | 无锡市新浩锅炉辅机有限公司 | High-temperature tail gas treatment device for boiler |
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Application publication date: 20201110 |