CN117582771A - Kiln flue gas cleaning system and flue gas cleaning method - Google Patents
Kiln flue gas cleaning system and flue gas cleaning method Download PDFInfo
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- CN117582771A CN117582771A CN202311817627.1A CN202311817627A CN117582771A CN 117582771 A CN117582771 A CN 117582771A CN 202311817627 A CN202311817627 A CN 202311817627A CN 117582771 A CN117582771 A CN 117582771A
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- flue gas
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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
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/26—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies rotatable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/682—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by nozzles
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention provides a kiln flue gas cleaning system and a flue gas cleaning method, wherein the kiln flue gas cleaning system comprises: the flue gas inlet pipeline is used for discharging kiln flue gas; the filter box is communicated with the flue gas inlet pipeline; the filter screen component is arranged in the filter box and is used for filtering kiln flue gas; the filter outlet pipeline is arranged above the filter box and connected with the filter screen component for discharging cleaned flue gas; the cleaning air pipe penetrates through the pipe wall of the filtering outlet pipe, one end of the cleaning air pipe stretches into the filter screen assembly, and the other end of the cleaning air pipe is used for communicating compressed gas; an ash falling port is arranged below the filter box. According to the invention, through arranging the filter box, the ash falling port and the filter screen assembly, the two-time cleaning of smoke dust is realized, and through arranging the cleaning air pipe, the filter screen assembly is cleaned on line, so that the problem of poor smoke cleaning effect caused by the blockage of the filter screen assembly is avoided, the cleaning effect is improved as a whole, the cleaning is convenient, and the application range is wider.
Description
Technical Field
The invention relates to the technical field of flue gas cleaning, in particular to a kiln flue gas cleaning system and a flue gas cleaning method.
Background
The heat taken away by the exhaust of the kiln gas is an important expenditure part in the heat balance of the kiln, the exhaust amount and the temperature of the gas have great influence on the burnup of the kiln, and if the heat of the part is fully utilized, the production energy consumption is reduced to a certain extent. For example, in the ceramic building industry, kiln flue gas is generally sent to a drying kiln, or clean hot air is replaced by a heat exchanger for use, but the kiln flue gas contains smoke dust and corrosive gas and has higher moisture content, and when the kiln flue gas is used, a wind supply pipe is easily blocked by the drying kiln, and when the kiln flue gas is used, the heat exchanger is easily scaled on the wall surface, so that the heat exchange efficiency is affected, the available heat is reduced, and the comprehensive energy consumption in the production process is increased.
The kiln flue gas has a relatively complex composition, for example, kiln flue gas generated in ceramic production has a certain moisture content, and sulfur dioxide, nitrogen oxides, dust (containing alumina or magnesia) at the bottom of a blank, ceramic fiber residues or powder and the like. Conventional cleaning systems have difficulty meeting the requirements for online high temperature flue gas cleaning.
The traditional filter cartridge type dust remover and the cloth bag type dust remover are high-efficiency dry dust removing devices, and have the advantages of high dust removing efficiency, stable device operation, few vulnerable parts and the like, the dust removing efficiency of the surface filtration of the filter cartridge type dust remover is far higher than that of the traditional dust remover, the emission of harmful substances is greatly reduced, but the filter core of the filter cartridge type dust remover is smaller, the filtration area is insufficient, the filter core is too large and is easy to deform at high temperature, in order to avoid deformation of the filter core, the filter cartridge type dust remover is designed to ensure the strength, the filtration is Kong Pianda, the filtration dust particles are coarser and can not meet the filtration requirement, and the filter cartridge is required to be detached periodically for cleaning or replacement in the use process and can not be cleaned on line; the bag type dust collector mainly relies on fiber to catch dust, realizes the filtration to the dust, however the area of bag type dust collector is big, if the area design with the bag type dust collector is less, still can not reach the filtration requirement.
Accordingly, the prior art has drawbacks and needs to be improved and developed.
Disclosure of Invention
The invention aims to solve the technical problems that the cleaning effect of a dust remover in the prior art is poor and cleaning is inconvenient.
The technical scheme adopted by the embodiment of the application for solving the technical problems is as follows:
a kiln flue gas cleaning system, wherein the kiln flue gas cleaning system comprises:
the flue gas inlet pipeline is used for discharging kiln flue gas;
the filter box is communicated with the flue gas inlet pipeline;
the filter screen component is arranged in the filter box and is used for filtering kiln flue gas;
the filter outlet pipeline is arranged above the filter box, connected with the filter screen assembly and used for discharging cleaned flue gas;
the cleaning air pipe penetrates through the pipe wall of the filtering outlet pipe, one end of the cleaning air pipe stretches into the filter screen assembly, and the other end of the cleaning air pipe is used for communicating compressed gas;
wherein, ash falling openings are formed below the filter boxes.
In one implementation, the kiln gas cleaning system further comprises a mounting bracket, the screen assembly comprising:
the driving motor is arranged on the mounting frame;
the lower end of the rotating shaft is arranged on the mounting frame through a pressure bearing, the upper end of the rotating shaft is connected with the output shaft of the driving motor, and the rotating shaft penetrates through the filter box;
the filter cartridge bracket is arranged on the rotating shaft and positioned in the filter box;
and a filter cartridge disposed on the cartridge holder.
In one implementation, the cartridge holder includes:
the filter cartridge bottom plate is arranged on the rotating shaft, and the rotating shaft penetrates through the circle center of the filter cartridge bottom plate;
a plurality of fixed net frames arranged on the filter cylinder bottom plate;
the pipeline connecting piece is arranged on one side of the fixed net frame, which is away from the filter cylinder bottom plate;
the filter cylinder comprises a plurality of filter screens arranged on the fixed screen frame, and the filter screens are high-temperature-resistant wire screens.
In one implementation mode, two partition plates are arranged between the inner wall of the filter box and the outer wall of the filter cylinder, an airflow space is formed among the two partition plates, the filter screen and the filter box, and the cleaning air pipe is arranged corresponding to the airflow space and is positioned in the filter cylinder; when the cleaning air pipe blows compressed air to the filter screen, the compressed air enters the air flow space through the filter screen, and dust on the filter screen falls into the dust falling port under the drive of the compressed air.
In one implementation, the filter box, the filter screen assembly and the cleaning air pipe are all provided with a plurality of filter boxes;
the flue gas inlet duct comprises:
a main flue gas inlet pipe;
one end of each inlet branch pipeline is communicated with the main flue gas inlet pipeline, and the other end of each inlet branch pipeline is communicated with a corresponding filter box;
the filter outlet duct comprises:
the lower ends of the outlet branch pipes are connected with corresponding pipe connectors;
and the upper ends of the outlet branch pipelines are communicated with the main filtering outlet pipeline.
In one implementation, the mounting bracket includes an upper mounting portion, a middle mounting portion, and a lower mounting portion; each driving motor is arranged on the upper layer installation part, the lower end of each rotating shaft is arranged on the lower layer installation part through a pressure bearing, the filter box is arranged between the middle layer installation part and the lower layer installation part, and the middle layer installation part is provided with a plurality of through grooves; each branch pipeline penetrates through the corresponding through groove.
In one implementation, a pressure detection device and a gate are provided on each of the inlet branch pipes and each of the outlet branch pipes.
In one implementation, an access opening is provided in one side of the filter box, the access opening being adapted with an access cover.
The invention also provides a flue gas cleaning method realized based on the kiln flue gas cleaning system, wherein the method comprises the following steps:
kiln flue gas enters the filter box through a flue gas inlet pipeline;
the smoke dust in the kiln smoke gas is settled to the dust falling port below the filter box by gravity, and when the smoke dust flows through the filter screen assembly, the smoke dust is attached to the outer wall of the filter cylinder of the filter screen assembly;
after the kiln flue gas is filtered by a filter cylinder of the filter screen assembly, cleaned flue gas is formed inside the filter cylinder;
the cleaned flue gas is discharged through a filter outlet pipeline;
the cleaning air pipe is controlled to spray compressed air to the outside of the filter cylinder at regular time, and smoke dust on the filter cylinder falls into the dust falling port under the drive of the compressed air;
when the driving motor in the filter screen assembly drives the rotating shaft to rotate, the filter cylinder rotates, so that the cleaning air pipe carries out jetting cleaning on all filter screens on the filter cylinder.
In one implementation, the method further comprises:
detecting the pressure of an inlet branch pipeline on a flue gas inlet pipeline and the pressure of an outlet branch pipeline on a filtering outlet pipeline to obtain a pressure difference;
and adjusting the rotating speed of a driving motor in the filter screen assembly and the pressure of the cleaning air pipe according to the pressure difference.
The invention has the beneficial effects that:
the embodiment of the application discloses a kiln flue gas cleaning system and flue gas cleaning method, kiln flue gas cleaning system includes: the flue gas inlet pipeline is used for discharging kiln flue gas; the filter box is communicated with the flue gas inlet pipeline; the filter screen component is arranged in the filter box and is used for filtering kiln flue gas; the filter outlet pipeline is arranged above the filter box, connected with the filter screen assembly and used for discharging cleaned flue gas; the cleaning air pipe penetrates through the pipe wall of the filtering outlet pipe, one end of the cleaning air pipe stretches into the filter screen assembly, and the other end of the cleaning air pipe is used for communicating compressed gas; wherein, ash falling openings are formed below the filter boxes. According to the invention, the first-step cleaning of smoke dust is realized by arranging the filter box and the dust falling port, the second-step cleaning of smoke dust is realized by arranging the filter screen assembly, the filter screen assembly is cleaned on line by arranging the cleaning air pipe, the problem of poor smoke cleaning effect caused by blockage of the filter screen assembly is avoided, the cleaning effect is improved as a whole, and the filter screen assembly is convenient to clean and has a wide application range.
Drawings
FIG. 1 is an exploded view of a preferred embodiment of the kiln flue gas cleaning system of the present invention.
Fig. 2 is a perspective view of a first view of a preferred embodiment of the kiln gas cleaning system of the present invention.
Fig. 3 is a perspective view of a second view of a preferred embodiment of the kiln gas cleaning system of the present invention.
FIG. 4 is a schematic view of the installation of the screen assembly and the mounting bracket of the preferred embodiment of the kiln gas cleaning system of the present invention.
Fig. 5 is a schematic diagram of a filter box of a preferred embodiment of the kiln flue gas cleaning system of the present invention.
FIG. 6 is a schematic view of a first view of a screen assembly of a preferred embodiment of a kiln gas cleaning system according to the present invention.
FIG. 7 is a schematic view of a second view of the screen assembly of the preferred embodiment of the kiln gas cleaning system of the present invention.
FIG. 8 is a schematic view of the cartridge holder of the preferred embodiment of the kiln gas cleaning system of the present invention.
FIG. 9 is a schematic illustration of the installation of the screen assembly and filter box of the preferred embodiment of the kiln gas cleaning system of the present invention.
Reference numerals illustrate:
100. a flue gas inlet duct; 110. a main flue gas inlet pipe; 120. an inlet branch conduit; 200. a filter box; 210. an ash falling port; 220. a partition plate; 230. an access cover; 300. a screen assembly; 310. a driving motor; 320. a rotation shaft; 321. a pressure bearing; 330. a cartridge holder; 331. a filter cartridge base plate; 332. fixing the net frame; 333. a pipe connection; 340. a filter cartridge; 341. a filter screen; 400. a filter outlet conduit; 410. an outlet branch conduit; 420. a main filtering outlet pipe; 500. cleaning the air tube; 600. a mounting frame; 610. an upper layer mounting part; 620. a middle layer installation part; 630. and a lower layer installation part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear and clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The traditional filter cartridge type dust remover and the cloth bag type dust remover are high-efficiency dry dust removing devices, and have the advantages of high dust removing efficiency, stable device operation, few wearing parts and the like, the dust removing efficiency of the surface filtration of the filter cartridge type dust remover is far higher than that of the traditional dust remover, the emission of harmful substances is greatly reduced, the use temperature of a conventional filter element of the filter cartridge type dust remover is lower, generally about normal temperature to 100 ℃, the use temperature of a metal filter element of the filter cartridge type dust remover can reach 250 ℃, but the filter element is smaller, the filtration area is insufficient, the filter element is too large to deform at high temperature easily, and in order to avoid the deformation of the filter element, the filter element is designed to ensure the strength, the filtration Kong Pianda is thicker, the filtration dust particles are not enough to meet the filtration requirement, and the filter cartridge is required to be removed periodically for cleaning or replacement in the use process, so that the online cleaning is not possible; the bag type dust collector mainly relies on fibers to capture dust, so that dust filtration is realized, however, the bag type dust collector occupies a large area, bag materials in the bag type dust collector are limited by temperature, the temperature of the bag type dust collector is generally lower than 160 ℃, and the cost of the bag type dust collector is very high when the bag type dust collector is suitable for temperatures exceeding 200 ℃.
The invention solves the technical problem of providing a kiln flue gas cleaning system, which adopts a mode of combining a filter cylinder type with a cloth bag type to trap dust, fiber slag and the like in a modular manner so as to achieve the purpose of flue gas cleaning.
Referring to fig. 1, 2, 3, 4 and 5, the present invention provides a kiln flue gas cleaning system, comprising: a flue gas inlet duct 100, a filter box 200, a filter screen assembly 300, a filter outlet duct 400, and a clean air duct 500. The flue gas inlet pipeline 100 is used for discharging kiln flue gas, and the filter box 200 is communicated with the flue gas inlet pipeline 100; the filter screen assembly 300 is arranged inside the filter box 200 and is used for filtering kiln flue gas; the filter outlet pipe 400 is disposed above the filter box 200 and connected to the filter screen assembly 300 for discharging cleaned flue gas; the cleaning air pipe 500 penetrates through the pipe wall of the filtering outlet pipe 400, one end of the cleaning air pipe 500 extends into the filter screen assembly 300, and the other end is used for communicating compressed gas. Wherein, the lower part of the filter box 200 is provided with an ash dropping port 210.
This embodiment of the application has realized the first step of dust clean through setting up rose box 200 and ash drop mouth 210, through setting up filter screen subassembly 300, has realized the second step of dust clean, through setting up clean trachea 500, has realized online clearance filter screen subassembly 300, avoids because the filter screen subassembly 300 blocks up the relatively poor problem of the clean effect of flue gas that leads to, has wholly improved clean effect to convenient clearance, application scope is wider.
In an embodiment of the present application, the kiln gas cleaning system further includes a mounting bracket 600, referring to fig. 6 and 7, the filter screen assembly 300 includes: drive motor 310, rotation shaft 320, cartridge holder 330, and cartridge 340. The driving motor 310 is disposed on the mounting frame 600, the lower end of the rotating shaft 320 is disposed on the mounting frame 600 through a pressure bearing 321, the upper end is connected with an output shaft of the driving motor 310, and the rotating shaft 320 penetrates through the filter box 200. The cartridge holder 330 is disposed on the rotation shaft 320 and is located inside the filter box 200. The filter cartridge 340 is disposed on the cartridge holder 330.
Specifically, this application embodiment is through setting up driving motor 310 on mounting bracket 600, and bearing 321 is passed through to rotation axis 320's lower extreme setting on mounting bracket 600 for driving motor 310 can drive rotation axis 320 and rotate, and then drive and strain a section of thick bamboo 340 and rotate, realizes clean trachea 500 to straining a section of thick bamboo 340 each angle's cleanness, and clean effect is better, can clean a section of thick bamboo 340 on line, has avoided dismantling the part, has improved the convenience and the efficiency of clearance.
Like this, kiln flue gas gets into this system through the tuber pipe of discharging fume, and the flue gas is through soft coupling to the fan inlet channel that discharges fume after this clean system cleans. The flow rate of kiln flue gas drops when entering clean system, and on the one hand part of large-particle smoke and dust subsides to the dust falling port 210 of rose box 200 below through gravity, and another part of granule gets into the filter cartridge 340 of rose box inside along with the flue gas, and when the filter screen 341 of filter cartridge 340 outer wall, the smoke and dust adheres to the outer wall of filter screen 341, and the inside clear flue gas that is of filter cartridge 340 gets into the exhaust fan import through the pipeline above the rose box 200.
Specifically, the kiln flue gas enters the filter box 200 through the flue gas inlet pipeline 100, the smoke dust in the kiln flue gas is settled to the dust falling port 210 below the filter box 200 by gravity, and when the smoke dust flows through the filter screen assembly 300, the smoke dust is attached to the outer wall of the filter cylinder 340 of the filter screen assembly 300, after the kiln flue gas is filtered by the filter cylinder 340 of the filter screen assembly 300, cleaned flue gas is formed in the filter cylinder 340 and discharged through the filter port pipeline 400, the cleaning air pipe 500 is controlled to regularly spray compressed air to the outside of the filter cylinder 340, the smoke dust on the filter cylinder 340 falls to the dust falling port 210 under the driving of the compressed air, and when the driving motor 310 in the filter screen assembly 300 drives the rotating shaft 320 to rotate, the filter cylinder 340 rotates, so that the cleaning air pipe 500 performs blowing cleaning on all the filter screens 341 on the filter cylinder 340.
In an embodiment of the present application, referring to fig. 8, the filter cartridge holder 330 includes: a filter cartridge base 331, a plurality of fixed frames 332, and conduit connections 333. The filter cartridge bottom plate 331 is disposed on the rotating shaft 320, and the rotating shaft 320 penetrates through the center of the filter cartridge bottom plate 331. The fixed mesh 332 is disposed on the filter cartridge base 331, and the pipe connector 333 is disposed on a side of the fixed mesh 332 facing away from the filter cartridge base 331. Wherein the filter cartridge 340 includes a plurality of filter screens 341 disposed on the fixed frame 332.
Specifically, a plurality of reinforcing ribs are further disposed below the filter cylinder bottom plate 331, one end of each reinforcing rib is fixedly connected to the lower end face of the filter cylinder bottom plate 331, and the other end is fixedly connected to the rotating shaft 320, so that structural stability is improved.
The metal filter core of the filter cartridge type dust remover in the prior art has the highest use temperature of 250 ℃, but the filter core is smaller, the filtering area is insufficient, and as the filter screen of the filter core is integrated, the filter core is too large to deform at high temperature easily, so as to avoid the deformation of the filter core, the filter core is designed to ensure the strength, the filter Kong Pianda is used for filtering dust particles to be thicker, the filter requirement cannot be met, and the filter cartridge is required to be detached periodically for cleaning or replacement in the use process, so that the filter cartridge cannot be cleaned on line.
The fixed net frame 332 plays a role in fixing and supporting, and the fixed net frame 332 is provided with the plurality of filter screens 341, so that the disassembly convenience of the filter screens 341 is improved, when the filter screens 341 are damaged or other abnormal conditions occur, the filter screens 341 can be independently replaced, the disassembly convenience is improved, and the replacement cost is reduced. The filter screen is a high-temperature-resistant metal wire mesh, and is butt-welded in the fixed screen frame, and the filter screen is inlaid on the fixed screen frame and is not influenced by high-temperature expansion, so that the highest use temperature of the filter screen can reach 450 ℃. In addition, the filter screen is split and embedded on the corresponding fixed screen frame, and does not expand at high temperature and deform, so that the filter holes of the filter screen can be designed to be very small, dust particles are filtered to be finer, the filtering effect is improved, and the filtering requirement is met.
In this embodiment, referring to fig. 5 and 9, two partition plates 220 are disposed between the inner wall of the filter box 200 and the outer wall of the filter cartridge 340, and an air flow space is formed between the two partition plates 220, the filter screen 341 and the filter box 200, and the cleaning air pipe 500 is disposed corresponding to the air flow space and is located inside the filter cartridge 340; when the compressed air is blown out from the cleaning air pipe 500 to the filter screen 341, the compressed air enters the air flow space through the filter screen 341, and the dust on the filter screen 341 falls into the dust falling port 210 under the driving of the compressed air.
Specifically, when the filter screen 341 is blown by the cleaning air pipe 500, since the space between the filter tank 200 and the filter screen 341 is large, it is difficult to form a strong blowing air flow, and thus, the embodiment of the present application sets two partition plates 220 between the inner wall of the filter tank 200 and the outer wall of the filter cartridge 340, and thus, a small air flow space is formed between the two partition plates 220, the filter screen 341 and the filter tank 200, thereby improving the cleaning effect of the cleaning air pipe 500.
The cleaning air pipe 500 is fixed, and can perform blowing cleaning on all the filter screens 341, and the cleaning air pipe 500 is disposed corresponding to the air flow space and close to the inner wall of the filter cartridge 340. The two baffles 220 can be arranged right above the ash falling port 210, so that when the cleaning air pipe 500 blows compressed air to the filter screen 341, the compressed air enters the air flow space through the filter screen 341, dust on the filter screen 341 directly falls into the ash falling port 210 under the drive of the compressed air, the filter screen 341 is sprayed outwards at regular time, smoke dust directly falls into the ash falling port 210 after spraying, the filter screen 341 is effectively prevented from being blocked by regular spraying, cleaning is performed after the filter screen 341 is not required to be detached, and the cleaning convenience of the filter screen 341 is improved.
In the embodiment of the present application, the filter box 200, the filter screen assembly 300 and the cleaning air pipe 500 are all provided with a plurality of filter boxes; the flue gas inlet duct 100 comprises: the system comprises a main flue gas inlet pipeline 110 and a plurality of branch inlet pipelines 120, wherein one end of each branch inlet pipeline 120 is communicated with the main flue gas inlet pipeline 110, and the other end of each branch inlet pipeline is communicated with a corresponding filter box 200. The filter outlet pipe 400 includes: a plurality of outlet branch pipes 410 and a main filtering outlet pipe 420, wherein the lower end of each outlet branch pipe 410 is connected with the corresponding pipe connector 333, and the upper end of each outlet branch pipe 410 is communicated with the main filtering outlet pipe 420.
Specifically, embodiments of the present application may be modularly assembled according to an amount of smoke, a single cleaning module comprising: the inlet branch pipe 120, the filter screen assembly 300, the cleaning air pipe 500 and the cleaning control system are arranged in parallel. If the smoke amount is large, a plurality of cleaning modules can be arranged. When 1 or more cleaning modules are used according to actual processing requirements and a plurality of modules are connected in parallel, one end of each of the inlet branch pipes 120 is communicated with the main flue gas inlet pipe 110, and the other end is communicated with the corresponding filter box 200. The lower end of each outlet branch pipe 410 is connected to the corresponding pipe connector 333, and the upper end of each outlet branch pipe 410 is connected to the main filter outlet pipe 420 in parallel.
In this way, the kiln flue gas enters each branch pipe through the main flue gas inlet pipe 110, enters the corresponding filter box 200 through each branch pipe, and is deposited to the dust falling port 210 below the filter box 200 by gravity, and when flowing through the filter cartridge 340, the dust adheres to the outer wall of the filter cartridge 340, the kiln flue gas is filtered by the filter screen 341 to form cleaned flue gas in the filter cartridge 340, and the cleaned flue gas in each filter cartridge 340 enters the main filter outlet pipe 420 through the corresponding branch outlet pipe 410, and is discharged from the main filter outlet pipe 420. The cleaning air pipes 500 in each cleaning module are controlled to spray compressed air to the outside of the filter cylinder 340 at regular time, smoke dust on the filter cylinder 340 falls into the dust falling port 210 under the drive of the compressed air, when each driving motor 310 drives the rotating shaft 320 to rotate, the filter cylinder 340 rotates, the cleaning air pipes 500 spray all filter screens 341 on each filter cylinder 340, and for each driving motor 310, the respective filter screens 341 can be sprayed and cleaned at the same time, and the corresponding spraying and cleaning frequency can be set according to the use frequency of each filter screen 341.
According to the embodiment of the application, through modularized assembly, according to different smoke amounts, cleaning modules with different amounts are used, so that the cleaning effect is improved, and the use rationality is improved.
In the embodiment of the present application, the mounting rack 600 includes an upper mounting portion 610, a middle mounting portion 620 and a lower mounting portion 630; each driving motor 310 is disposed on the upper mounting portion 610, the lower end of each rotating shaft 320 is disposed on the lower mounting portion 630 through a pressure bearing 321, the filter box 200 is disposed between the middle mounting portion 620 and the lower mounting portion 630, and the middle mounting portion 620 is provided with a plurality of through grooves; each branch pipeline penetrates through the corresponding through groove.
Specifically, in order to secure structural stability, the upper mounting portion 610, the middle mounting portion 620 and the lower mounting portion 630 are provided on the mounting frame 600 so as to support each structure of the kiln gas cleaning system, thereby improving structural stability. In addition, since the rotary shaft 320 is arranged in the bracket of the filter screen 341, the top is driven by the motor, the lower part is supported by the pressure bearing 321, the motor and the pressure bearing 321 are respectively arranged at the upper layer installation part 610 and the lower layer installation part 630, and the motor drives the rotary shaft 320 to rotate, so that the stability of the structure is realized.
In the embodiment of the present application, the pressure detecting device and the gate are disposed on each of the inlet branch pipes 120 and each of the outlet branch pipes 410.
Specifically, the pressure detection is performed on each of the inlet branch pipes 120, the pressure detection is performed on each of the outlet branch pipes 410, and since the inlet branch pipes 120 and the outlet branch pipes 410 are disposed in one-to-one correspondence, it is possible to obtain the pressure differences between the corresponding inlet branch pipes 120 and outlet branch pipes 410, adjust the rotational speeds of the corresponding driving motors 310 according to the respective pressure differences, and adjust the pressure of the cleaning air pipes 500. In the embodiment of the application, the cleaning control system can control and adjust the rotation speed of the driving motor 310 and the pressure of the cleaning air pipe 500 to realize the cleaning automation. And confirm the clean module number that needs to use according to the demand, when cleaning, open the gate that needs to use clean module, realize using the clean module of different quantity according to the exhaust gas volume of difference, improved clean effect and use rationality.
The system of this application embodiment adopts filter cylinder type and sack formula combination's mode to clean kiln flue gas, and the dust content reduces more than 90% after the kiln flue gas is clean, can satisfy the direct condition that does not appear blocking up of feeding into the heat system.
In the embodiment of the present application, an access opening is formed at one side of the filter box 200, and the access opening is adapted with an access cover 230.
Specifically, since the filter screen 341 is mounted on the filter screen 341 support, if the filter screen 341 is broken or otherwise abnormal, the access cover 230 can be opened, and the filter screen 341 is removed and replaced through the access opening, thereby improving the convenience of the removal and replacement of the filter screen 341.
The invention also provides a flue gas cleaning method realized based on the kiln flue gas cleaning system, which comprises the following steps:
step S100, kiln flue gas enters the filter box 200 through the flue gas inlet pipeline 100;
step S200, the smoke dust in the kiln flue gas is settled to the dust falling port 210 below the filter box 200 by gravity, and the smoke dust is attached to the outer wall of the filter cylinder 340 of the filter screen assembly 300 when flowing through the filter screen assembly 300;
step S300, after the kiln gas is filtered by the filter cylinder 340 of the filter screen assembly 300, cleaned gas is formed inside the filter cylinder 340;
step S400, the cleaned flue gas is discharged through the filter outlet pipeline 400;
step S500, the cleaning air pipe 500 is controlled to spray compressed air to the outside of the filter cylinder 340 at regular time, and smoke dust on the filter cylinder 340 falls into the dust falling port 210 under the drive of the compressed air;
in step S500, when the driving motor 310 in the filter assembly 300 drives the rotation shaft 320 to rotate, the filter cartridge 340 rotates, so that the cleaning air pipe 500 performs blowing cleaning on all the filter screens 341 on the filter cartridge 340.
Kiln flue gas of this application embodiment gets into this system through the tuber pipe of discharging fume, and the flue gas is through soft coupling to exhaust fan inlet pipeline after this clean system cleans. The flow rate of kiln flue gas drops when entering clean system, and on the one hand part of large-particle smoke and dust subsides to the dust falling port 210 of rose box 200 below through gravity, and another part of granule gets into the filter cartridge 340 of rose box inside along with the flue gas, and when the filter screen 341 of filter cartridge 340 outer wall, the smoke and dust adheres to the outer wall of filter screen 341, and the inside clear flue gas that is of filter cartridge 340 gets into the exhaust fan import through the pipeline above the rose box 200.
Specifically, the screen 341 may be regularly spray cleaned. When the compressed gas is blown out from the cleaning air pipe 500 to the filter screen 341, the compressed gas enters the airflow space formed between the two partition boards 220, the filter screen 341 and the filter box 200 through the filter screen 341, and dust on the filter screen 341 directly falls into the dust falling port 210 under the drive of the compressed gas, so that the filter screen 341 is effectively prevented from being blocked, the filter screen 341 is not required to be disassembled, and then the cleaning convenience of the filter screen 341 is improved.
In an embodiment of the present application, the method further includes:
detecting the pressure of the inlet branch pipe 120 on the flue gas inlet pipe 100 and the pressure of the outlet branch pipe 410 on the filter outlet pipe 400 to obtain a pressure difference;
the rotational speed of the drive motor 310 in the screen assembly 300 and the pressure of the cleaning air pipe 500 are adjusted according to the pressure difference.
Specifically, the pressure detection is performed on each of the inlet branch pipes 120, the pressure detection is performed on each of the outlet branch pipes 410, and since the inlet branch pipes 120 and the outlet branch pipes 410 are disposed in one-to-one correspondence, the pressure difference between the corresponding inlet branch pipe 120 and the outlet branch pipe 410 can be obtained, the rotation speed of the corresponding driving motor 310 can be adjusted according to each pressure difference, and the pressure of the cleaning air pipe 500 can be adjusted, thereby realizing the cleaning automation.
In summary, the invention discloses a kiln flue gas cleaning system and a flue gas cleaning method, wherein the kiln flue gas cleaning system comprises: the flue gas inlet pipeline is used for discharging kiln flue gas; the filter box is communicated with the flue gas inlet pipeline; the filter screen component is arranged in the filter box and is used for filtering kiln flue gas; the filter outlet pipeline is arranged above the filter box, connected with the filter screen assembly and used for discharging cleaned flue gas; the cleaning air pipe penetrates through the pipe wall of the filtering outlet pipe, one end of the cleaning air pipe stretches into the filter screen assembly, and the other end of the cleaning air pipe is used for communicating compressed gas; wherein, ash falling openings are formed below the filter boxes. According to the invention, the first-step cleaning of smoke dust is realized by arranging the filter box and the dust falling port, the second-step cleaning of smoke dust is realized by arranging the filter screen assembly, the filter screen assembly is cleaned on line by arranging the cleaning air pipe, the problem of poor smoke cleaning effect caused by blockage of the filter screen assembly is avoided, the cleaning effect is improved as a whole, and the filter screen assembly is convenient to clean and has a wide application range.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (10)
1. A kiln flue gas cleaning system, comprising:
the flue gas inlet pipeline is used for discharging kiln flue gas;
the filter box is communicated with the flue gas inlet pipeline;
the filter screen component is arranged in the filter box and is used for filtering kiln flue gas;
the filter outlet pipeline is arranged above the filter box, connected with the filter screen assembly and used for discharging cleaned flue gas;
the cleaning air pipe penetrates through the pipe wall of the filtering outlet pipe, one end of the cleaning air pipe stretches into the filter screen assembly, and the other end of the cleaning air pipe is used for communicating compressed gas;
wherein, ash falling openings are formed below the filter boxes.
2. The kiln gas cleaning system of claim 1, further comprising a mounting bracket, the screen assembly comprising:
the driving motor is arranged on the mounting frame;
the lower end of the rotating shaft is arranged on the mounting frame through a pressure bearing, the upper end of the rotating shaft is connected with the output shaft of the driving motor, and the rotating shaft penetrates through the filter box;
the filter cartridge bracket is arranged on the rotating shaft and positioned in the filter box;
and a filter cartridge disposed on the cartridge holder.
3. The kiln gas cleaning system of claim 2, wherein the cartridge holder comprises:
the filter cartridge bottom plate is arranged on the rotating shaft, and the rotating shaft penetrates through the circle center of the filter cartridge bottom plate;
a plurality of fixed net frames arranged on the filter cylinder bottom plate;
the pipeline connecting piece is arranged on one side of the fixed net frame, which is away from the filter cylinder bottom plate;
the filter cylinder comprises a plurality of filter screens arranged on the fixed screen frame, and the filter screens are high-temperature-resistant wire screens.
4. The kiln gas cleaning system according to claim 3, wherein two baffles are arranged between the inner wall of the filter box and the outer wall of the filter cartridge, an air flow space is formed between the two baffles, the filter screen and the filter box, and the cleaning air pipe is arranged corresponding to the air flow space and is positioned inside the filter cartridge; when the cleaning air pipe blows compressed air to the filter screen, the compressed air enters the air flow space through the filter screen, and dust on the filter screen falls into the dust falling port under the drive of the compressed air.
5. The kiln gas cleaning system of claim 2, wherein the filter box, filter screen assembly and cleaning gas tube are each provided with a plurality of;
the flue gas inlet duct comprises:
a main flue gas inlet pipe;
one end of each inlet branch pipeline is communicated with the main flue gas inlet pipeline, and the other end of each inlet branch pipeline is communicated with a corresponding filter box;
the filter outlet duct comprises:
the lower ends of the outlet branch pipes are connected with corresponding pipe connectors;
and the upper ends of the outlet branch pipelines are communicated with the main filtering outlet pipeline.
6. The kiln gas cleaning system of claim 5, wherein the mounting bracket comprises an upper mounting portion, a middle mounting portion, and a lower mounting portion; each driving motor is arranged on the upper layer installation part, the lower end of each rotating shaft is arranged on the lower layer installation part through a pressure bearing, the filter box is arranged between the middle layer installation part and the lower layer installation part, and the middle layer installation part is provided with a plurality of through grooves; each branch pipeline penetrates through the corresponding through groove.
7. The kiln gas cleaning system of claim 5, wherein each of the inlet branch ducts and each of the outlet branch ducts are provided with a pressure sensing device and a shutter.
8. The kiln gas cleaning system of claim 1, wherein an access opening is provided in one side of the filter box, the access opening being adapted with an access cover.
9. A flue gas cleaning method based on a kiln flue gas cleaning system according to any one of claims 1-8, characterized in that the method comprises:
kiln flue gas enters the filter box through a flue gas inlet pipeline;
the smoke dust in the kiln smoke gas is settled to the dust falling port below the filter box by gravity, and when the smoke dust flows through the filter screen assembly, the smoke dust is attached to the outer wall of the filter cylinder of the filter screen assembly;
after the kiln flue gas is filtered by a filter cylinder of the filter screen assembly, cleaned flue gas is formed inside the filter cylinder;
the cleaned flue gas is discharged through a filter outlet pipeline;
the cleaning air pipe is controlled to spray compressed air to the outside of the filter cylinder at regular time, and smoke dust on the filter cylinder falls into the dust falling port under the drive of the compressed air;
when the driving motor in the filter screen assembly drives the rotating shaft to rotate, the filter cylinder rotates, so that the cleaning air pipe carries out jetting cleaning on all filter screens on the filter cylinder.
10. The flue gas cleaning method of claim 9, wherein the method further comprises:
detecting the pressure of an inlet branch pipeline on a flue gas inlet pipeline and the pressure of an outlet branch pipeline on a filtering outlet pipeline to obtain a pressure difference;
and adjusting the rotating speed of a driving motor in the filter screen assembly and the pressure of the cleaning air pipe according to the pressure difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311817627.1A CN117582771A (en) | 2023-12-26 | 2023-12-26 | Kiln flue gas cleaning system and flue gas cleaning method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311817627.1A CN117582771A (en) | 2023-12-26 | 2023-12-26 | Kiln flue gas cleaning system and flue gas cleaning method |
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| CN202311817627.1A Pending CN117582771A (en) | 2023-12-26 | 2023-12-26 | Kiln flue gas cleaning system and flue gas cleaning method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119187853A (en) * | 2024-11-14 | 2024-12-27 | 苏州莱博真空技术有限公司 | A fume exhaust component for a laser cutting machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2821509Y (en) * | 2005-07-11 | 2006-09-27 | 蔡南 | Filter net |
| CN201613098U (en) * | 2010-03-19 | 2010-10-27 | 邹甫骏 | Flue gas collection, smoke prevention and dust removal device for smelting furnace |
| CN102228769A (en) * | 2011-05-30 | 2011-11-02 | 江苏大学 | Filter cartridge dust remover with automatical and continuous dust removal function |
| CN108079695A (en) * | 2017-12-18 | 2018-05-29 | 李金栋 | A kind of reverse dust-extraction unit |
-
2023
- 2023-12-26 CN CN202311817627.1A patent/CN117582771A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2821509Y (en) * | 2005-07-11 | 2006-09-27 | 蔡南 | Filter net |
| CN201613098U (en) * | 2010-03-19 | 2010-10-27 | 邹甫骏 | Flue gas collection, smoke prevention and dust removal device for smelting furnace |
| CN102228769A (en) * | 2011-05-30 | 2011-11-02 | 江苏大学 | Filter cartridge dust remover with automatical and continuous dust removal function |
| CN108079695A (en) * | 2017-12-18 | 2018-05-29 | 李金栋 | A kind of reverse dust-extraction unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119187853A (en) * | 2024-11-14 | 2024-12-27 | 苏州莱博真空技术有限公司 | A fume exhaust component for a laser cutting machine |
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