CN112944377A - Flue gas dust removal system and method for starting and stopping dust remover - Google Patents
Flue gas dust removal system and method for starting and stopping dust remover Download PDFInfo
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- CN112944377A CN112944377A CN202110205098.4A CN202110205098A CN112944377A CN 112944377 A CN112944377 A CN 112944377A CN 202110205098 A CN202110205098 A CN 202110205098A CN 112944377 A CN112944377 A CN 112944377A
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- flue gas
- dust remover
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- smoke
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- 239000000428 dust Substances 0.000 title claims abstract description 230
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000003546 flue gas Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000779 smoke Substances 0.000 claims abstract description 72
- 239000007789 gas Substances 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000012716 precipitator Substances 0.000 description 16
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a flue gas dust removal system and a method for starting and stopping a dust remover, wherein the flue gas dust removal system comprises: a dust remover, a fan and a heater; the dust remover is provided with a smoke inlet, a smoke outlet and an air inlet, wherein the smoke inlet is communicated with the smoke inlet flue, and the smoke outlet is communicated with the smoke outlet flue; the output end of the fan is communicated with the air inlet through a first communicating pipe; the heater is arranged on the first communicating pipe. The flue gas dust removal system and the start and stop method of the dust remover disclosed by the invention can reduce the influence of the operation of the flue gas dust remover with higher water content, reduce the faults and prolong the service life of the dust remover.
Description
Technical Field
The invention relates to the technical field of industrial production, in particular to a flue gas dust removal system and a method for starting and stopping a dust remover.
Background
Flue gas generated by combustion of industrial kilns such as glass kilns and the like needs to be treated by a dust remover system and then is discharged. In the flue gas generated by combustion (especially oxygen-enriched and oxygen-enriched combustion), the water content is high, and the flue gas with high water content can influence the operation of the dust remover, shorten the service life of the dust remover and even cause the operation fault of the whole flue gas treatment system.
Disclosure of Invention
The invention mainly aims to provide a flue gas dust removal system and a method for starting and stopping a dust remover, and aims to solve the technical problem that flue gas with high water content influences the operation of the dust remover in the prior art.
In order to achieve the above object, the present invention provides a flue gas dust removal system, comprising:
the dust remover is provided with a smoke inlet, a smoke outlet and an air inlet, wherein the smoke inlet is communicated with a smoke inlet flue, and the smoke outlet is communicated with a smoke outlet flue;
the output end of the fan is communicated with the air inlet through a first communicating pipe;
and the heater is arranged on the first communicating pipe.
Optionally, the input end of the fan is communicated with the smoke outlet flue through a second communicating pipe, and the second communicating pipe is connected with the smoke outlet flue and located between the smoke outlet and the output end of the smoke outlet flue.
Optionally, the smoke inlet is provided with a first valve;
the flue gas dust removal system further comprises:
the air inlet pipe, its input and atmosphere intercommunication, its output with second communicating pipe intercommunication, and its output is in the fan with go out between the cigarette flue, the second valve has in the air inlet pipe, the second has the third valve on communicating pipe, the third valve is in the air inlet pipe with go out between the cigarette flue.
Optionally, a fourth valve is provided at the air inlet.
Optionally, the dust remover is provided with a plurality of dust removers;
the smoke inlets of all the dust collectors are communicated with the output end of the smoke inlet flue through the smoke inlet branch pipes which correspond to one another one by one;
the smoke outlets of all the dust collectors are communicated with the input end of the smoke outlet flue through the smoke outlet branch pipes which correspond to one another one by one;
the air inlets of all the dust collectors are communicated with the output end of the first communication pipe through the communication branch pipes which correspond to one another one by one;
the first valves are arranged at the smoke inlets of all the dust collectors;
the fourth valve is arranged at the air inlet of all the dust collectors.
Optionally, the first communication pipe is provided with a fifth valve, and the fifth valve is arranged between the heater and the air inlet.
Optionally, the dust remover is provided with a manhole, and the manhole is provided with a manhole door.
Optionally, the air inlet is at a lower portion of the precipitator and the smoke outlet is at a top portion of the precipitator.
Optionally, the smoke inlet is at a lower portion of the precipitator and the smoke outlet is at a top portion of the precipitator.
The invention provides a starting method of a dust remover, which comprises the following steps:
supplying hot gas into the dust remover;
and after the temperature in the dust remover is raised to the preset temperature, introducing flue gas into the dust remover, and stopping supplying hot gas into the dust remover.
The invention provides a shutdown method of a dust remover, which comprises the following steps:
stopping supplying the flue gas into the dust remover;
supplying dry hot air into the dust remover to enable the supplied dry hot air to replace the flue gas in the dust remover;
and after the dry hot air completely replaces the flue gas in the dust remover, stopping supplying the dry hot air into the dust remover, and cooling the air in the dust remover.
In the technical scheme of the invention, before the dust remover is started, heated gas is pumped into the dust remover through the fan, the heater and the first communication pipe, so that the dust remover can be preheated, the environment temperature of the flue gas fed into the dust remover, which enters the dust remover, is higher, and the phenomenon that when high-temperature flue gas is directly fed into the dust remover which is not preheated, the flue gas is cooled in the dust remover, so that a large amount of moisture in the flue gas is condensed to corrode the inner wall of the dust remover can be avoided; after the flue gas is stopped being supplied into the dust remover due to the conditions that the dust remover needs to be overhauled and the like, the dry hot air can be pumped into the dust remover through the fan, the heater and the first communication pipe, so that the dry hot air is replaced by the original flue gas with higher water content in the dust remover, the dust remover is fully filled with the dry hot air and then cooled, and the phenomenon that the original flue gas with higher water content meets cold air to be condensed in the dust remover to cause the corrosion of the inner wall of the dust remover when the dust remover is directly cooled can be avoided; through the scheme of this application, when the dust remover starts and stops, all can prevent to take place the condensation phenomenon in the dust remover, can guarantee the operation of dust remover, reduce the trouble, prolong the life of dust remover.
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 structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment of a flue gas dedusting system according to the present invention;
FIG. 2 is a schematic view of the connection of the dust collector of the flue gas dust removal system of the present invention with the flue gas inlet and outlet;
the reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The application provides a flue gas dust removal system and start-up and shut-down method of dust remover 200, can reduce the influence of the higher flue gas dust remover 200 operation of water content, reduces the trouble, prolongs the life of dust remover 200.
As shown in fig. 1 and fig. 2, in the embodiment of the flue gas dust removal system provided by the present invention, the flue gas dust removal system includes:
the dust remover 200 is provided with a smoke inlet, a smoke outlet and an air inlet, wherein the smoke inlet is communicated with the smoke inlet flue 110, and the smoke outlet is communicated with the smoke outlet flue 120;
the output end of the fan 400 is communicated with the air inlet through a first communication pipe 510;
the heater 300 is disposed on the first communication pipe 510.
When the dust remover 200 is started (including the case of starting for the first time, and restarting after shutdown due to maintenance and other conditions), if the dust remover 200 is not preheated, the flue gas containing a large amount of moisture is directly introduced, and the condensation phenomenon occurs in the dust remover 200; in addition, after the running dust remover 200 is stopped, the dust remover 200 is filled with flue gas containing a large amount of moisture, and the flue gas is directly cooled in the dust remover 200 but also can be condensed in the dust remover 200; particularly, when the dust remover 200 needs to be overhauled after shutdown, the flue gas containing a large amount of moisture in the dust remover 200 needs to be discharged outside, and the flue gas directly meets cold air when being discharged outside, so that the condensation phenomenon is easy to occur; the condensed water generated by the condensation phenomenon adheres to the interior of the dust collector 200, which easily causes corrosion of the dust collector 200.
In the above embodiment, before the dust remover 200 is started, heated gas is pumped into the dust remover 200 through the fan 400, the heater 300 and the first communication pipe 510, so that the dust remover 200 can be preheated, the ambient temperature of the flue gas fed into the dust remover 200 entering the dust remover 200 is higher, and the flue gas can be prevented from being cooled in the dust remover 200 when high-temperature flue gas is directly fed into the dust remover 200 which is not preheated, so that a large amount of moisture in the flue gas is condensed to corrode the inner wall of the dust remover 200; after the supply of the flue gas into the dust remover 200 is stopped due to the conditions that the dust remover 200 needs to be overhauled and the like, the dry and hot air can be pumped into the dust remover 200 through the fan 400, the heater 300 and the first communication pipe 510, so that the dry and hot air is replaced by the original flue gas with higher water content in the dust remover 200, and the dust remover 200 is fully filled with the dry and hot air and then cooled, thereby avoiding the phenomenon that the original flue gas with higher water content meets cold air and is condensed in the dust remover 200 to cause the corrosion of the inner wall of the dust remover 200 when the dust remover 200 is directly cooled; when the dust remover 200 needs to be overhauled, the original flue gas in the dust remover 200 is completely replaced by the dry hot air pumped into the dust remover 200 when the machine is stopped, and the dry hot air is discharged or cooled without condensation; through the scheme of this application, start, stop and when overhauing at dust remover 200, all can prevent to take place the condensation phenomenon in the dust remover 200, can guarantee the operation of dust remover 200, reduce the trouble, prolong the life of dust remover 200.
As a further solution of the above embodiment, the output end of the fan 400 is communicated with the smoke outlet flue 120 through a second communicating pipe 520, and the second communicating pipe 520 is connected with the smoke outlet flue 120 and located between the smoke outlet and the output end of the smoke outlet flue 120.
In the further scheme of the above embodiment, when starting, the air in the whole system, such as the smoke outlet branch pipe 121, the smoke outlet flue 120, the first communicating pipe 510, the second communicating pipe 520, the third communicating pipe 530, the dust remover 200, and the like, can be used for heating and then preheating the dust remover 200, without introducing external air, the air in the smoke outlet flue 120 circulates in the system after being heated, and meanwhile, the original cold air in the dust remover 200 can be brought out by generating power, and the preheating efficiency is high.
As a further solution to the above embodiment, the smoke inlet has a first valve 610;
the flue gas dust removal system further comprises:
the input end of the air inlet pipe 700 is communicated with the atmosphere, the output end of the air inlet pipe 700 is communicated with the second communicating pipe 520, the output end of the air inlet pipe is positioned between the fan 400 and the smoke outlet flue 120, the air inlet pipe 700 is provided with a second valve 620, the second communicating pipe 520 is provided with a third valve 630, and the third valve 630 is positioned between the air inlet pipe 700 and the smoke outlet flue 120.
In a further scheme of the above embodiment, when the machine is shut down or overhauled, the supply of the flue gas into the dust remover 200 can be stopped by closing the first valve 610, so as to achieve the purpose of isolating the dust remover 200; the third valve 630 is closed, the second valve 620 is opened, the fan 400 sucks in the outside air through the air inlet pipe 700, the moisture content in the outside air is low, the flue gas in the dust remover 200 is replaced after heating, the condensation phenomenon can be avoided, and in addition, the flue gas in the dust remover 200 is replaced by the air, so that the dust remover is beneficial to personnel to enter the dust remover 200 for overhauling.
After the third valve 630 is arranged, the fan 400 can select the power frequency fan, the fan is more economical, the third valve 630 is closed before the fan 400 is started, the third valve 630 is gradually and slowly opened after the fan 400 is stable, and the phenomenon that the power frequency fan is overloaded when being started can be avoided.
As a further solution to the above embodiment, the air inlet has a fourth valve 640.
In a further aspect of the foregoing embodiment, when the dust remover 200 operates normally, the fourth valve 640 is closed, so as to prevent the flue gas from entering the first communicating pipe 510, the second communicating pipe 520, the heater 300, and the fan 400.
As a further aspect of the above embodiment, the dust remover 200 has a plurality;
the smoke inlets of all the dust collectors 200 are communicated with the output end of the smoke inlet flue 110 through the smoke inlet branch pipes 111 which correspond one to one;
the smoke outlets of all the dust collectors 200 are communicated with the input end of the smoke outlet flue 120 through the smoke outlet branch pipes 121 which are in one-to-one correspondence;
the air inlets of all the dust collectors 200 are communicated with the output end of the first communicating pipe 510 through the communicating branch pipes 530 corresponding one to one;
all the smoke inlets of the dust remover 200 are provided with first valves 610;
the fourth valve 640 is provided at the air inlet of all the dust collectors 200.
In the further scheme of the above embodiment, a plurality of dust collectors 200 are arranged, so that the dust removal efficiency can be improved, each dust collector 200 can be independently isolated and maintained by controlling the first valve 610 and the fourth valve 640 of each dust collector 200, and when a certain dust collector 200 is maintained, the work of other dust collectors 200 is not influenced, so that the dust removal work is continuously performed.
As a further solution to the above embodiment, the first connection pipe 510 has a fifth valve 650, and the fifth valve 650 is disposed between the heater 300 and the air inlet.
In the further scheme of the above embodiment, the first connecting pipe 510 is provided with a double-valve structure, which can improve the sealing effect and facilitate control, when the heater 300 heats the gas, the fifth valve 650 can be closed first, and after the air reaches the preset temperature, the fifth valve 650 and the fourth valve 640 are gradually opened, so that the gas with the temperature reaching the preset temperature enters the dust remover 200.
As a further solution to the above embodiment, the dust collector 200 has a manhole, and a manhole door 210 is provided at the manhole.
In a further aspect of the above embodiment, the cooling of the temperature in the dust separator 200 can be accelerated by opening the manhole door 210, and the entry of service personnel into the dust separator 200 is facilitated.
As a further aspect of the above embodiment, the air inlet is at the lower portion of the duster 200 and the smoke outlet is at the top of the duster 200.
In the further scheme of the above embodiment, the heated gas enters the dust remover 200 from the lower part, rises in the dust remover 200, and the original gas in the dust remover 200 is discharged into the smoke outlet flue 120 through the smoke outlet at the upper part, so that the original gas in the dust remover 200 can be replaced quickly and comprehensively.
As a further aspect of the above embodiment, the smoke inlet is at the lower portion of the duster 200 and the smoke outlet is at the top of the duster 200.
In the further scheme of the above embodiment, when the dust remover 200 works, the flue gas with higher temperature enters the dust remover 200 from the lower part, rises and removes dust in the dust remover 200, so that the driving of the induced draft fan 400 can be reduced or not needed, more energy is saved, and then the flue gas is discharged into the flue gas outlet 120 through the flue gas outlet at the upper part, so that the dust removal path is long, and the dust removal effect is good.
In order to ensure that the gas supplied into the dust collector 200 is dried, a drying device may be provided on the first communication pipe 510 between the heater 300 and the dust collector 200, or a drying device may be provided at the inlet end of the inlet pipe 700.
The smoke outlets of all the dust collectors 200 are provided with sixth valves 660, and the first valves 610 and the sixth valves 660 can be butterfly valves.
When a certain dust collector 200 is started, the first valve 610 of the dust collector 200 is closed, the sixth valve 660 and the fourth valve 640 of the dust collector 200 are opened, the third valve 630 is closed, the fifth valve 650 is opened or closed, and the fan 400 is started, in order to improve the economy, the fan 400 can select an industrial frequency fan, after the fan is stabilized, the third valve 630 is gradually and slowly opened until the third valve 630 is fully opened, so that the gas in the space communicated with the fan 400 in the whole system is circulated, then the heater 300 is started, the circulated gas is heated, the heated gas is pumped into the corresponding dust collector 200, the dust collector 200 is preheated, the heated gas is circulated among the dust collector 200, the smoke outlet flue 120, the second communicating pipe 520 and the first communicating pipe 510, after the dust collector 200 is preheated, the heater 300, the fan 400, the third valve 630, the fifth valve 650 and the fourth valve 640 of the dust collector 200 are closed, the supply of the heated gas into the dust collector 200 is stopped, and the first valve 610 is opened to allow the flue gas to enter the dust collector 200 for dust collection.
Before fan 400 is stable, close third valve 630 earlier, load when can reduce fan 400 and start, avoid the too big phenomenon such as tripping operation that causes of load when the start-up of power frequency fan.
When a certain dust remover 200 needs to be stopped in the normal operation process of the flue gas dust removal system, closing the third valve 630, opening the second valve 620, the fifth valve 650, the heater 300 and the fan 400, opening the fourth valve 640 of the precipitator 200, introducing dry hot air into the precipitator 200, closing the first valve 610 of the precipitator 200, stopping the supply of the flue gas into the precipitator 200, cooling the air in the precipitator 200 after the supplied dry hot air completely replaces the original flue gas in the precipitator 200, when cooling, the heater 300 may be turned off, and cool air may be introduced into the dust separator 200 by the blower 400, to accelerate cooling of the dust separator 200, at the same time, the manhole door 210 can be opened to further accelerate the cooling of the dust collector 200, and after the dust collector 200 is cooled, the blower 400, the second valve 620, the fifth valve 650 and the fourth valve 640 of the dust separator 200 are turned off.
In the normal operation process of the flue gas dust removal system, when a certain dust remover 200 needs to be overhauled, after the shutdown step is completed, an overhaul worker enters the dust remover 200 through a manhole to overhaul.
The embodiment of the starting method of the dust remover provided by the invention adopts the flue gas dust removal system, and comprises the following steps:
supplying hot gas into the dust separator 200;
after the temperature in the dust collector 200 is raised to the preset temperature, the flue gas is introduced into the dust collector 200, and the supply of the hot gas into the dust collector 200 is stopped.
Specifically, when a certain dust collector 200 is started, the first valve 610 of the dust collector 200 is closed, the sixth valve 660 and the fourth valve 640 of the dust collector 200 are opened, the third valve 630 is closed, the fifth valve 650 is opened or closed, and the fan 400 is started, in order to improve the economy, the fan 400 can be selected to use a high-frequency fan, after the fan is stabilized, the third valve 630 is gradually and slowly opened until the third valve 630 is fully opened, so that the gas in the space communicated with the fan 400 in the whole system is circulated, then the heater 300 is started, the circulated gas is heated, the heated gas is pumped into the corresponding dust collector 200, the dust collector 200 is preheated, the heated gas is circulated among the dust collector 200, the smoke outlet flue 120, the second communicating pipe 520 and the first communicating pipe 510, and after the dust collector 200 is preheated, the heater 300, the fan 400, the third valve 630, the fan 400 and the fan 400 are closed, The fifth valve 650 and the fourth valve 640 of the scrubber 200 stop the supply of the heated gas into the scrubber 200, and open the first valve 610 to allow the flue gas to enter the scrubber 200 for scrubbing.
Before fan 400 is stable, close third valve 630 earlier, load when can reduce fan 400 and start, avoid the too big phenomenon such as tripping operation that causes of load when the start-up of power frequency fan.
The embodiment of the shutdown method of the dust remover provided by the invention adopts the flue gas dust removal system, and comprises the following steps:
stopping supplying the flue gas into the dust collector 200;
supplying dry hot air into the dust collector 200 to displace the flue gas in the dust collector 200 by the supplied dry hot air;
after the dry hot air completely displaces the flue gas in the dust collector 200, the supply of the dry hot air into the dust collector 200 is stopped, and the air in the dust collector 200 is cooled.
Specifically, when a certain dust remover 200 needs to be stopped in the normal operation process of the flue gas dust removal system, closing the third valve 630, opening the second valve 620, the fifth valve 650, the heater 300 and the fan 400, opening the fourth valve 640 of the precipitator 200, introducing dry hot air into the precipitator 200, closing the first valve 610 of the precipitator 200, stopping the supply of the flue gas into the precipitator 200, cooling the air in the precipitator 200 after the supplied dry hot air completely replaces the original flue gas in the precipitator 200, when cooling, the heater 300 may be turned off, and cool air may be introduced into the dust separator 200 by the blower 400, to accelerate cooling of the dust separator 200, at the same time, the manhole door 210 can be opened to further accelerate the cooling of the dust collector 200, and after the dust collector 200 is cooled, the blower 400, the second valve 620, the fifth valve 650 and the fourth valve 640 of the dust separator 200 are turned off.
The embodiment of the overhauling method of the dust remover provided by the invention adopts the flue gas dust removal system, and after the stopping method of the dust remover is finished, the overhauling method of the dust remover further comprises the following steps:
after the air in the dust remover 200 is cooled, the dust remover 200 is overhauled.
The maintenance personnel can enter the dust collector 200 through the manhole for maintenance.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A flue gas dust removal system, comprising:
the dust remover is provided with a smoke inlet, a smoke outlet and an air inlet, wherein the smoke inlet is communicated with a smoke inlet flue, and the smoke outlet is communicated with a smoke outlet flue;
the output end of the fan is communicated with the air inlet through a first communicating pipe;
and the heater is arranged on the first communicating pipe.
2. The flue gas dedusting system of claim 1, wherein an input end of the fan is communicated with the flue gas outlet via a second communicating pipe, and the second communicating pipe is connected with the flue gas outlet between the flue gas outlet and an output end of the flue gas outlet.
3. The flue gas dedusting system of claim 2 wherein the flue gas inlet has a first valve;
the flue gas dust removal system further comprises:
the air inlet pipe, its input and atmosphere intercommunication, its output with second communicating pipe intercommunication, and its output is in the fan with go out between the cigarette flue, the second valve has in the air inlet pipe, the second has the third valve on communicating pipe, the third valve is in the air inlet pipe with go out between the cigarette flue.
4. The flue gas dedusting system of claim 3 wherein the inlet port has a fourth valve.
5. The flue gas dedusting system of claim 4 wherein said deduster has a plurality;
the smoke inlets of all the dust collectors are communicated with the output end of the smoke inlet flue through the smoke inlet branch pipes which correspond to one another one by one;
the smoke outlets of all the dust collectors are communicated with the input end of the smoke outlet flue through the smoke outlet branch pipes which correspond to one another one by one;
the air inlets of all the dust collectors are communicated with the output end of the first communication pipe through the communication branch pipes which correspond to one another one by one;
the first valves are arranged at the smoke inlets of all the dust collectors;
the fourth valve is arranged at the air inlet of all the dust collectors.
6. The flue gas dedusting system of any of the claims 1-5 wherein the scrubber has a manhole with a manhole door.
7. A flue gas dust removal system according to any one of claims 1 to 5, wherein the gas inlet is in the lower part of the dust remover and the smoke outlet is in the top part of the dust remover.
8. The flue gas dust removal system of any one of claims 1 to 5, wherein the flue gas inlet is at a lower portion of the dust remover and the flue gas outlet is at a top portion of the dust remover.
9. A starting method of a dust remover is characterized by comprising the following steps:
supplying hot gas into the dust remover;
and after the temperature in the dust remover is raised to the preset temperature, introducing flue gas into the dust remover, and stopping supplying hot gas into the dust remover.
10. A shutdown method of a dust remover is characterized by comprising the following steps:
stopping supplying the flue gas into the dust remover;
supplying dry hot air into the dust remover to enable the supplied dry hot air to replace the flue gas in the dust remover;
and after the dry hot air completely replaces the flue gas in the dust remover, stopping supplying the dry hot air into the dust remover, and cooling the air in the dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110205098.4A CN112944377B (en) | 2021-02-23 | 2021-02-23 | Flue gas dust removal system and starting and stopping method of dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN112944377B (en) | 2024-05-31 |
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