CN114130170A - High-efficient flue gas processing system of electricity bag dust removal and SCR denitration integration - Google Patents

High-efficient flue gas processing system of electricity bag dust removal and SCR denitration integration Download PDF

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Publication number
CN114130170A
CN114130170A CN202111506989.XA CN202111506989A CN114130170A CN 114130170 A CN114130170 A CN 114130170A CN 202111506989 A CN202111506989 A CN 202111506989A CN 114130170 A CN114130170 A CN 114130170A
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CN
China
Prior art keywords
dust removal
flue gas
dust
denitration
primary
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CN202111506989.XA
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Chinese (zh)
Inventor
朱健
严正东
陈利娟
陈韵白
周爱军
李春平
王书军
王前
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Jiangsu Anda Environmental Protection Technology Co ltd
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Jiangsu Anda Environmental Protection Technology Co ltd
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Priority to CN202111506989.XA priority Critical patent/CN114130170A/en
Publication of CN114130170A publication Critical patent/CN114130170A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017Combinations of electrostatic separation with other processes, not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/30Controlling by gas-analysis apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/869Multiple step processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8696Controlling the catalytic process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/90Injecting reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

The invention provides an electric bag dust removal and SCR denitration integrated high-efficiency flue gas treatment system, which comprises: the system comprises a primary treatment system, a detection system and a control system, wherein the primary treatment system is used for carrying out denitration and dust removal on the discharged flue gas; and controlling the primary flue gas discharged after primary denitration and dust removal according to the detection result and discharging the primary flue gas to the first discharge tower or a second discharge tower in the secondary treatment system. The invention is used for effectively monitoring the discharged flue gas and carrying out secondary treatment on the discharged flue gas according to the monitoring result, further achieving the purpose of always meeting the atmospheric emission standard in the flue gas discharge process and reducing the pollution of pollutants discharged along with the flue gas to the environment.

Description

High-efficient flue gas processing system of electricity bag dust removal and SCR denitration integration
Technical Field
The invention relates to the technical field of dust removal, in particular to an efficient flue gas treatment system integrating electric bag dust removal and SCR denitration.
Background
A large amount of nitrogen oxides exist in combustion flue gas, and the nitrogen oxides are directly discharged to the environment, so that the ecological environment is seriously polluted; severely contaminated areas can even lead to excessive nitrogen oxide inhalation by humans or animals resulting in poisoning;
therefore, the combustion flue gas needs to be subjected to environment-friendly treatment before being discharged, and the existing environment-friendly treatment equipment comprises a flue gas desulfurization tower, a flue gas washing tower, an absorption medium transmission pipe network, a chimney, a flue and the like; during the flue gas treatment process, the method mainly comprises the steps of dedusting and removing toxic substances; therefore, the emission of the flue gas can reach the emission standard of atmospheric pollutants in corresponding areas, and the aim of environment-friendly production is fulfilled;
in the existing denitration and dust removal equipment, the aim of purifying the flue gas emission can be fulfilled by performing denitration and dust removal on the flue gas, wherein the denitration can remove nitrogen oxides in the combustion flue gas, so that the emission flue gas reaches the emission standard of atmospheric pollutants;
after the denitration dust removal equipment is manufactured or leaves a factory, the working efficiency of the denitration dust removal equipment can ensure that flue gas after denitration and dust removal meets the emission standard of atmospheric pollutants; however, after the denitration dust removal equipment is used for a period of time, the flue gas treatment efficiency is reduced after the denitration dust removal equipment is aged or fails, and the discharged flue gas may not meet the atmospheric emission standard;
therefore, a system which can effectively monitor the discharged flue gas and perform secondary treatment on the discharged flue gas according to a monitoring result is lacked, so that the aim of meeting the atmospheric emission standard all the time in the flue gas discharge process is fulfilled, and the condition that pollutants are discharged along with the flue gas to cause pollution to the environment is reduced.
Disclosure of Invention
The invention provides an electric bag dust removal and SCR denitration integrated efficient flue gas treatment system which is used for effectively monitoring discharged flue gas, carrying out secondary treatment on the discharged flue gas according to a monitoring result, further achieving the purpose of always meeting the atmospheric emission standard in the flue gas discharge process and reducing the pollution of pollutants discharged along with the flue gas to the environment.
The invention provides an electric bag dust removal and SCR denitration integrated high-efficiency flue gas treatment system, which is characterized by comprising the following components: a primary treatment system which carries out denitration and dust removal on the discharged flue gas,
the detection system is used for detecting primary flue gas discharged after primary denitration and dust removal of the primary treatment system;
and controlling the primary flue gas discharged after primary denitration and dust removal according to the detection result and discharging the primary flue gas to the first discharge tower or a second discharge tower in the secondary treatment system.
Preferably, the method further comprises the step of starting a first valve to discharge the primary flue gas from a first discharge tower if the flue gas subjected to primary denitration and dust removal meets the emission standard;
and if the flue gas after the primary denitration and dust removal does not meet the emission standard, starting a second valve to discharge the primary flue gas to a secondary treatment system, wherein the secondary treatment system is used for carrying out secondary denitration and dust removal on the primary flue gas and discharging the secondary flue gas after the secondary denitration and dust removal from a second discharge tower.
Preferably, primary treatment system's output is provided with detecting system, detecting system is smoke detection device, smoke detection device carries out harmful substance detection with the one-level flue gas of discharging behind the dust removal of removing to one-level denitration.
Preferably, the primary treatment system and the secondary treatment system both comprise a denitration system and a dedusting system,
the system comprises a denitration system and a dust removal system, wherein the dust removal system is used for carrying out dust removal treatment on the discharged flue gas and discharging the flue gas subjected to dust removal to the denitration system; and the denitration system is used for denitration of the dedusted flue gas.
Preferably, an air inlet flue is arranged at the input end of the dust removal system, the air inlet flue is used for inputting waste gas into the dust removal system, the output end of the dust removal system is communicated with the denitration system through a first smoke exhaust pipe, the output end of the denitration system is communicated with the discharge tower through a second smoke exhaust pipe, and the discharge tower is a first discharge tower or a second discharge tower.
Preferably, the dust removing system includes: the box body comprises a first dust removal box and a second dust removal box, the input end of the first dust removal box is communicated with the air inlet flue through the air inlet flue,
first dust removal case and second dust removal case communicate the setting in proper order in the box, the output intercommunication purifying box of second dust removal case, the purifying box is used for discharging the flue gas of second dust removal case output to first exhaust pipe.
Preferably, an electric dust removal assembly is arranged in the first dust removal box, a dust hopper is arranged below the first dust removal box, one side of the first dust removal box, which is far away from the smoke inlet pipeline, is communicated with the second dust removal box through a first communication pipeline,
the second removes dust the incasement and is provided with the sack and removes dust subassembly, the sack removes dust subassembly is used for carrying out the secondary with first dust removal case exhaust flue gas and removes dust, the below of second dust removal case is provided with a plurality of dust hoppers, each the dust hopper be used for with the dust or the bits foam of sack removal subassembly interception are collected, the lower bottom surface of dust hopper is provided with the ash valve, the ash valve be used for with dust or bits foam in the dust hopper discharge extremely the purifying box.
Preferably, an ash removal device is further arranged in the purification box and used for removing dust or scrap foam attached to the cloth bag dust removal component; and the second dust removal box is used for filtering dust in the smoke exhausted by the second dust removal box.
Preferably, the ash removal device is hoisted on the inner top surface of the purification box, and the ash removal device comprises:
the lower surface of the hanger rail is provided with a first sliding chute, a sliding plate is arranged in the first sliding chute in a sliding manner, and the upper surface of the hanger rail is hung on the inner top surface of the purification box through a hanger with a U-shaped structure;
a first rotating shaft is rotatably arranged on the hanging bracket, a first rotating disc is arranged on one surface of the first rotating shaft, which is close to the hanging rail, a swing rod is arranged on the lower bottom surface of the first rotating disc, the swing rod and the circle center of the first rotating disc are arranged at intervals, a first sliding block is arranged at the other end of the swing rod, and the first sliding block reciprocates in a second sliding groove of a second push rod;
a through notch is formed in the first sliding groove, the notch is used for connecting the lower surface of the second push rod with the upper surface of the sliding plate, and the second push rod drives the sliding plate to move along with the reciprocating motion of the swing rod;
the lower surface of the sliding plate is provided with a third sliding groove, two sides of the hanger rail are respectively provided with a plurality of groups of first vertical plates which are oppositely arranged, each group of first vertical plates are provided with a first push rod in a reciprocating manner, the upper top surface of the first push rod is provided with a second slide block, the second slide blocks are matched with the third sliding grooves, the third sliding grooves are of a notch structure formed by connecting a plurality of V-shaped grooves end to end, one end of the first push rod is provided with a dust removing rod which extends downwards, the dust removing rod is of an L structure, and the L end of the L structure is used for pushing or vibrating a cloth bag of a cloth bag dust removing assembly;
and the dust adhered to the cloth bag in the cloth bag dust removal component falls into the dust collecting hopper.
Preferably, the lower bottom surface of the first push rod is provided with a high-pressure pipeline which is communicated with an extension pipe,
two ends of the sliding plate are respectively provided with a vertical rod extending downwards, the bottom surface of each vertical rod is provided with an extending plate, the extending plate and the vertical rod form an L-shaped structure, and openings of the L-shaped structure are oppositely arranged;
the upper surface of each extension plate is used for placing a dust screen, and two ends of the dust screen are clamped by a clamping assembly and fixed on the extension plates;
the extension pipe is used for spraying or adsorbing the dust screen at high pressure to clean dust;
the upper surface of the extension plate is also provided with a trigger switch, the trigger switch is started through a trigger rod on the clamping assembly, and the trigger switch is used for opening or closing an electromagnetic valve of the extension pipe.
Preferably, the clamping assembly comprises: the device comprises a shell, wherein two limiting columns are arranged in the shell at intervals, a push block is movably arranged on each limiting column, two sides of each push block are respectively and symmetrically provided with a cylindrical boss extending outwards, the lower surface of each push block is provided with a top rod, the lower end of each top rod is provided with a trigger rod, and the trigger rods are used for being matched with trigger switches on extension plates;
the positions, close to four corners, of the dustproof net are provided with penetrating limiting grooves, the limiting grooves are sleeved on the trigger switch, and the lower surface of the push block is used for being pressed on the upper surface of the dustproof net;
two second vertical plates are arranged in the shell at intervals, the second vertical plates are symmetrically arranged in the shell by taking the limiting column as a center, a fourth rotating shaft is rotatably arranged between one second vertical plate and the inner wall of the shell,
one end of the fourth rotating shaft extends out of the shell and is connected with the third rotating shaft, the other end of the fourth rotating shaft is connected with the third rotating disc through the cylindrical boss, and the outer side wall of the third rotating disc is provided with a first clamping disc with an arc-shaped structure;
a second rotating shaft penetrates through the other second vertical plate and penetrates through the shell and is connected with the second vertical plate corresponding to the other group of clamping assemblies;
the end part of the second rotating shaft is connected with a third rotating disc through a cylindrical boss, and a second clamping disc with an arc-shaped structure is arranged on the outer wall of the third rotating disc connected with the second rotating shaft;
and fourth sliding grooves with arc structures are arranged on the first clamping disc and the second clamping disc, and the fourth sliding grooves are used for the third sliding blocks to reciprocate.
The working principle and the beneficial effects of the invention are as follows:
the invention provides an electric bag dust removal and SCR denitration integrated high-efficiency flue gas treatment system, which comprises: the system comprises a primary treatment system, a detection system and a control system, wherein the primary treatment system is used for carrying out denitration and dust removal on the discharged flue gas; and controlling the primary flue gas discharged after primary denitration and dust removal according to the detection result and discharging the primary flue gas to the first discharge tower or a second discharge tower in the secondary treatment system. The invention is used for effectively monitoring the discharged flue gas and carrying out secondary treatment on the discharged flue gas according to the monitoring result, further achieving the purpose of always meeting the atmospheric emission standard in the flue gas discharge process and reducing the pollution of pollutants discharged along with the flue gas to the environment.
Specifically, in the dust removal process, the flue gas after dust removal is retested, if the retesting result can not reach the emission standard, then discharge it to the secondary treatment system and carry out secondary treatment to realize the purpose of effectively monitoring and handling the emission flue gas, reduce and discharge not up to standard and fail in time to discover and cause the condition of pollution to the environment.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a schematic view of a connection structure of a dust removal system and a denitration system according to the present invention;
FIG. 3 is a schematic view of the dust removal system of the present invention;
FIG. 4 is a schematic view of the ash removal device of the present invention;
FIG. 5 is a schematic front view of the ash removal device of the present invention;
FIG. 6 is a schematic perspective view of the ash removal device of the present invention;
FIG. 7 is another schematic perspective view of the ash removal device of the present invention;
FIG. 8 is a schematic top view of the clamping mechanism of the present invention;
FIG. 9 is a perspective view of the clamping mechanism of the present invention;
FIG. 10 is a schematic perspective view of a clamping mechanism according to the present invention;
FIG. 11 is a schematic structural view of a third turntable according to the present invention;
FIG. 12 is a schematic view of the trigger switch and trigger lever of the present invention;
wherein, 1-an air inlet flue, 2-a box body, 3-a first dust removal box, 4-a second dust removal box, 5-a purification box, 6-a first smoke exhaust pipe, 7-a denitration system, 8-a second smoke exhaust pipe, 9-a discharge tower, 10-an air inlet pipe, 11-an electric dust removal component, 12-a first communication pipe, 14-a dust hopper, 15-a cloth bag dust removal component,
16-hanging rail, 17-first vertical plate, 18-first push rod, 19-sliding plate, 20-first sliding groove, 21-hanging frame, 22-first rotating disc, 23-first rotating shaft, 24-swinging rod, 25-second push rod, 26-second sliding groove, 27-first sliding block, 28-third sliding groove, 29-second sliding block, 30-high pressure pipeline, 31-extension pipe and 32-dust screen,
33-a clamping component, 34-a vertical rod, 35-a second rotating shaft, 36-a third rotating shaft, 37-a shell, 38-a fourth rotating shaft, 39-a first clamping disc, 40-a top rod, 41-a push block, 42-a cylindrical boss, 43-a third sliding block, 44-a second clamping disc, 45-a limiting column, 46-a third rotating disc, 47-a second vertical plate, 48-a fourth sliding groove, 49-an extending plate, 50-a trigger switch, 51-a trigger rod, 52-a limiting groove and 53-an ash removal rod.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
As shown in fig. 1 to 12, an embodiment of the present invention provides an efficient flue gas treatment system integrating electric bag dust removal and SCR denitration, including: a primary treatment system which carries out denitration and dust removal on the discharged flue gas,
the detection system is used for detecting primary flue gas discharged after primary denitration and dust removal of the primary treatment system;
and controlling the primary flue gas discharged after primary denitration and dust removal according to the detection result, and discharging the primary flue gas to the first discharge tower 9 or a second discharge tower 9 in the secondary treatment system.
The invention is used for effectively monitoring the discharged flue gas and carrying out secondary treatment on the discharged flue gas according to the monitoring result, further achieving the purpose of always meeting the atmospheric emission standard in the flue gas discharge process and reducing the pollution of pollutants discharged along with the flue gas to the environment.
Specifically, in the dust removal process, the flue gas after dust removal is retested, if the retesting result can not reach the emission standard, then discharge it to the secondary treatment system and carry out secondary treatment to realize the purpose of effectively monitoring and handling the emission flue gas, reduce and discharge not up to standard and fail in time to discover and cause the condition of pollution to the environment.
In one embodiment, the method further comprises the steps of starting a first valve to discharge the primary flue gas from the first discharge tower 9 if the flue gas after primary denitration and dust removal meets the emission standard; and if the flue gas after the primary denitration and dust removal does not meet the emission standard, starting a second valve to discharge the primary flue gas to a secondary treatment system, wherein the secondary treatment system is used for carrying out secondary denitration and dust removal on the primary flue gas and discharging the secondary flue gas after the secondary denitration and dust removal from a second discharge tower 9.
In this embodiment, two second smoke exhaust pipes 8 of the primary treatment system are provided, one of the second smoke exhaust pipes is connected with the first exhaust tower 9, the other one of the second smoke exhaust pipes is connected with the air inlet flue 1 of the secondary treatment system, and the two second smoke exhaust pipes 8 of the primary treatment system are respectively provided with a first valve and a second valve;
the output of primary treatment system is provided with detecting system, detecting system is flue gas detection device, flue gas detection device carries out harmful substance detection with the one-level flue gas of discharging behind the dust removal of denitration of one-level.
The flue gas detection device is a flue gas detector which is used for detecting the emission standard of the flue gas subjected to dust removal and denitration, discharging the flue gas if the discharged flue gas reaches the emission standard, and performing secondary treatment on the flue gas by a secondary treatment system if the emission standard does not reach the standard so that the discharged flue gas can meet the emission standard.
In one embodiment, the primary treatment system and the secondary treatment system both comprise a denitration system 7 and a dedusting system,
the denitration system 7 and the dust removal system are used for carrying out dust removal treatment on the discharged flue gas and discharging the flue gas subjected to dust removal to the denitration system 7; and the denitration system 7 is used for denitration of the dedusted flue gas.
In this embodiment, in the actual use process, the primary processing system and the secondary processing system may operate separately or jointly; the primary treatment system or the secondary treatment system can alternately discharge the flue gas up to the standard after maintenance, so that the continuous up to the standard flue gas discharge can be conveniently carried out without shutdown, and the production efficiency is ensured; meanwhile, one of the two groups of discharge towers 9 can be used independently to realize the purpose of alternative work, so that the service life of the machine equipment is prolonged, and the machine equipment can be overhauled or maintained after one of the discharge towers is shut down conveniently.
In one embodiment, an input end of the dust removal system is provided with an air inlet flue 1, the air inlet flue 1 is used for inputting exhaust gas into the dust removal system, an output end of the dust removal system is communicated with a denitration system 7 through a first exhaust pipe 6, an output end of the denitration system 7 is communicated with an exhaust tower 9 through a second exhaust pipe 8, and the exhaust tower 9 is a first exhaust tower 9 or a second exhaust tower 9.
The dust removal system includes: the box body 2, the box body 2 comprises a first dust removing box 3 and a second dust removing box 4, the input end of the first dust removing box 3 is communicated with the air inlet flue 1 through an air inlet flue pipe 10,
first dust removal case 3 and second dust removal case 4 communicate the setting in box 2 in proper order, the output intercommunication purifying box 5 of second dust removal case 4, purifying box 5 is used for discharging the flue gas of second dust removal case 4 output to first exhaust pipe 6.
An electric dust removal component 11 is arranged in the first dust removal box 3, a dust hopper 14 is arranged below the first dust removal box 3, one side of the first dust removal far away from the smoke inlet pipeline 10 is communicated with the second dust removal box 4 through a first communicating pipeline 12,
be provided with sack dust removal subassembly 15 in the second dust removal case 4, sack dust removal subassembly 15 is used for carrying out the secondary with first dust removal case 3 exhaust flue gas and removes dust, the below of second dust removal case 4 is provided with a plurality of dust hoppers 14, each dust hopper 14 be used for with the dust or the bits foam of sack dust removal subassembly 15 interception are collected, the lower bottom surface of dust hopper 14 is provided with the ash valve, the ash valve be used for with dust or bits foam in the dust hopper 14 discharge extremely purifying box 5.
In this embodiment, the first dust removal box 3 is used for primary dust removal of the discharged flue gas, and in the primary dust removal process, 75% of dust in the waste flue gas can be subjected to electrostatic dust removal; after the dust removal is finished, the dust hopper 14 is used for outputting the dust adsorbed by the high-voltage static electricity, so that the condition that the dust removal efficiency is reduced or the smoke gas passing rate is reduced due to dust accumulation in the first dust removal box 3 is avoided;
the second dust removal case 4 carries out the second grade through sack dust removal subassembly 15 to the flue gas after the one-level dust removal that the below got into for the dust in the flue gas through sack dust removal subassembly 15 intercepts, thereby realizes that the flue gas that gets into in the purifying box 5 is the flue gas after the deashing, and then realizes that the flue gas discharge can satisfy emission standard's purpose.
Further, the flue gas subjected to primary treatment is detected according to the detection system, and when the detection result meets the emission standard, the flue gas subjected to primary treatment is directly discharged to the denitration system 7 for denitration and then discharged to the first discharge tower 9; when the detection structure does not meet the emission standard, the flue gas subjected to the primary treatment is subjected to secondary treatment, so that the flue gas meets the emission standard and is discharged through the second discharge tower 9.
Therefore, when the flue gas subjected to secondary treatment is subjected to denitration treatment, the service life of the denitration system 7 can be prolonged, and meanwhile, when the primary treatment system fails, the secondary treatment system can be directly used as a standby for denitration and dust removal treatment; or when the maintenance is needed, one of the two can be maintained and maintained without stopping the machine, and the other can be maintained and maintained without stopping the machine.
In one embodiment, a dust cleaning device is further disposed in the purifying box 5, and the dust cleaning device is used for removing dust or debris attached to the cloth bag dust removing assembly 15; and the second dust removal box is used for filtering dust in the flue gas discharged from the second dust removal box 4.
The working principle of the cloth bag dust removal assembly 15 is that the flue gas discharged from the first dust removal box 3 is introduced below the cloth bag dust removal assembly 15 below the second dust removal box 4, and then the flue gas dust is intercepted/filtered by the cloth bag dust removal assembly 15, so that the filtered flue gas is discharged into the purification box 5 above the second dust removal box 4; during the long-time dust filtering process, the dust adhered to the cloth bag dust removal assembly 15 cannot be cleaned, so that the smoke cannot pass smoothly, the smoke treatment efficiency is reduced, and even the production fault is caused by smoke blockage;
therefore, the dust or scrap foam attached to the cloth bag dust removal component 15 can be cleaned through the arranged dust cleaning device, so that the cloth bag dust removal component 15 can be cleaned through the dust cleaning device after being attached with certain dust, and the smoke filterability of the cloth bag dust removal component 15 is ensured.
In one embodiment, the ash removing device is hung on the inner top surface of the purifying box 5, and the ash removing device comprises:
the lower surface of the hanger rail 16 is provided with a first sliding chute 20, a sliding plate 19 is arranged in the first sliding chute 20 in a sliding manner, and the upper surface of the hanger rail 16 is hung on the inner top surface of the purification box 5 through a hanging bracket 21 with a U-shaped structure;
a first rotating shaft 23 is rotatably arranged on the hanger 21, a first rotating disc 22 is arranged on one surface of the first rotating shaft 23 close to the hanger rail 16, a swing rod 24 is arranged on the lower bottom surface of the first rotating disc 22, the swing rod 24 and the circle center of the first rotating disc 22 are arranged at intervals, a first sliding block 27 is arranged at the other end of the swing rod 24, and the first sliding block 27 reciprocates in a second sliding groove 26 of a second push rod 25;
a through notch is formed in the first sliding chute 20, the notch is used for connecting the lower surface of the second push rod 25 with the upper surface of the sliding plate 19, and the second push rod 25 drives the sliding plate 19 to move along with the reciprocating motion of the swing rod 24;
the lower surface of the sliding plate 19 is provided with a third sliding chute 28, two sides of the hanger rail 16 are respectively provided with a plurality of groups of first vertical plates 17 which are oppositely arranged, each group of first vertical plates 17 is provided with a first push rod 18 in a reciprocating manner, the upper top surface of the first push rod 18 is provided with a second slide block 29, the second slide blocks 29 are matched with the third sliding chutes 28, the third sliding chutes 28 are of a plurality of notch structures in which V-shaped grooves are connected end to end, one end of the first push rod 18 is provided with a dust removing rod 53 which extends downwards, the dust removing rod 53 is of an L structure, and the L end of the L structure is used for pushing or vibrating a cloth bag of the cloth bag dust removing assembly 15;
and the dust adhered to the cloth bag in the cloth bag dust removal component 15 falls into the dust collecting hopper 14.
In this embodiment, the first rotating shaft 23 penetrates through the purifying box 5 and is connected with a motor, the motor is provided with a switch, when the ash removing device works, the switch connected with the motor is firstly started, the motor drives the first rotating shaft 23 to rotate after working, the first rotating shaft 23 drives the first rotating disc 22 to rotate after rotating, the first rotating disc 22 drives the oscillating bar 24 to oscillate after rotating, the first sliding block 27 is driven to oscillate after oscillating the oscillating bar 24 oscillates, the first sliding block 27 further reciprocates in the second sliding groove 26 of the second push rod 25,
the first slide block 27 simultaneously drives the second push rod 25 to reciprocate in the through hole of the first slide groove 20 in the moving process, and the second push rod 25 also drives the sliding plate 19 to reciprocate in the first slide groove 20 of the hanger rail 16 in the reciprocating process, so that the reciprocating motion of the sliding plate 19 is realized;
when the sliding plate 19 moves, a plurality of V-shaped third sliding grooves 28 formed on the lower surface of the sliding plate 19 are matched with the second sliding blocks 29, when the second sliding block 29 reciprocates in the third sliding groove 28, the second sliding block moves along with the groove body structure of the V-shaped groove and the sliding plate 19, so as to further realize that the first push rods 18 connected with the second sliding block reciprocate on the two first vertical plates 17, a plurality of first push rods 18 are arranged, when reciprocating, the dust cleaning rod 53 with the connected L-shaped structure can be driven to reciprocate together, the dust cleaning rod 53 can be inserted into the cloth bag of the cloth bag dust removing component 15, when the ash removal rod 53 reciprocates, the inner wall of the cloth bag is vibrated, so that the dust attached to the outer side surface of the cloth bag is shaken off to the dust hopper 14, and the purpose of cleaning the dust attached to the outer side surface of the cloth bag is achieved.
In one embodiment, a high pressure pipeline 30 is arranged on the lower bottom surface of the first push rod 18, the high pressure pipeline 30 is communicated with an extension pipe 31,
two ends of the sliding plate 19 are respectively provided with a vertical rod 34 extending downwards, the bottom surface of the vertical rod 34 is provided with an extending plate 49, the extending plate 49 and the vertical rod 34 form an L-shaped structure, and openings of the L-shaped structure are oppositely arranged;
the upper surface of each extension plate 49 is used for placing a dust screen 32, and two ends of the dust screen 32 are clamped and fixed on the extension plates 49 through clamping assemblies 33;
the extension pipe 31 is used for cleaning dust which is sprayed or adsorbed to the dust screen 32 under high pressure;
the upper surface of the extension plate 49 is further provided with a trigger switch 50, the trigger switch 50 is activated by a trigger rod 51 on the clamping assembly 33, and the trigger switch 50 is used for opening or closing the electromagnetic valve of the extension pipe 31.
The clamping assembly 33 includes: the device comprises a shell 37, wherein two limiting columns 45 are arranged in the shell 37 at intervals, a push block 41 is movably arranged on each limiting column 45, two sides of each push block 41 are respectively and symmetrically provided with a cylindrical boss 42 extending outwards, a top rod 40 is arranged on the lower surface of each push block 41, a trigger rod 51 is arranged at the lower end of each top rod 40, and each trigger rod 51 is used for being matched with a trigger switch 50 on an extension plate 49;
through limiting grooves 52 are formed in the positions, close to the four corners, of the dust screen 32, the limiting grooves 52 are sleeved on the trigger switch 50, and the lower surface of the push block 41 is used for pressing the upper surface of the dust screen 32;
two second vertical plates 47 are arranged in the housing 37 at intervals, the second vertical plates 47 are symmetrically arranged in the housing 37 by taking the limiting column 45 as a center, a fourth rotating shaft 38 is rotatably arranged between one of the second vertical plates 47 and the inner wall of the housing 37,
one end of the fourth rotating shaft 38 extends out of the outer shell 37 and is connected with the third rotating shaft 36, the other end of the fourth rotating shaft 38 is connected with a third rotating disc 46 through a cylindrical boss 42, and a first clamping disc 39 with an arc-shaped structure is arranged on the outer side wall of the third rotating disc 46;
a second rotating shaft 35 penetrates through the other second vertical plate 47, and the second rotating shaft 35 penetrates through the housing 37 and is connected with the second vertical plate 47 corresponding to the other group of clamping assemblies 33;
the end part of the second rotating shaft 35 is connected with a third rotating disc 46 through a cylindrical boss 42, and a second clamping disc 44 with an arc-shaped structure is arranged on the outer wall of the third rotating disc 46 connected with the second rotating shaft 35;
a fourth sliding chute 48 with an arc structure is arranged on each of the first clamping disk 39 and the second clamping disk 44, and the fourth sliding chute 48 is used for the third sliding block 43 to reciprocate.
In this embodiment, the dust screen 32 can further isolate the passing flue gas, so that the dust content of the flue gas output from the purifying box 5 is greatly reduced, specifically, the sliding plate 19 can drive the vertical rods 34 on both sides to reciprocate in the reciprocating process, and the vertical rods 34 can drive the dust screen 32 fixed by the clamping assembly 33 to perform position adjustment during the reciprocating motion, so that the dust screen 32 can perform position adjustment, and further the dust screen 32 can effectively intercept the flue gas exhausted by the bag type dust removing assembly 15;
when the dust screen 32 works, the clamping assembly 33 is firstly started to clamp the dust screen 32, so that the dust screen 32 cannot move due to smoke emission in the using process; when the clamping assembly 33 works, the fourth rotating shaft 38 of the clamping assembly 33 penetrates through the purifying box 5 and is connected with the third rotating shaft 36, the fourth rotating shaft 38 can rotate by pulling a handle arranged on the outer side wall of the third rotating shaft 36, and the fourth rotating shaft 38 is in threaded connection with the shell 37, so that the fourth rotating shaft 38 can be locked at a predetermined position when rotating;
further, after the handle rotates, the fourth rotating shaft 38 drives the third rotating disc 46 connected with the fourth rotating shaft 38 to rotate, the third rotating disc 46 on one side rotates and drives the first clamping disc 39 connected with the circumferential outer wall of the first clamping disc 39 to rotate, the fourth sliding groove 48 on the first clamping disc 39 is matched with the third sliding block 43, and the pushing block 41 is driven to reciprocate on the limiting column 45; at the same time, the first clamping disk 39 also carries the second clamping disk 44 on the other side to carry out linkage; the purpose of clamping or loosening a group of clamping assemblies 33 is achieved;
then, the other group of clamping components 33 connected through the second rotating shaft 35 also synchronously rotate to achieve the purpose of clamping or loosening the dust screen 32 together;
when the dust screen 32 is clamped, the trigger rod 51 arranged on the lower surface of the push block 41 is matched with the trigger switch 50 on the extension plate 49, so that the purpose of opening or closing the trigger switch 50 is achieved, the opening or closing of the trigger switch 50 can achieve the opening or closing of the electromagnetic valve on the extension pipe 31, and further achieve the purpose of adsorbing dust attached to the dust screen 32 by high-pressure airflow generated by the high-pressure pipeline 30 on the extension pipe 31, so that the filtering efficiency of the dust screen 32 is improved, the dust content in smoke discharged by the purification box 5 is lower, the waste gas treatment efficiency is improved, and the purpose that the emission standard of waste gas emission is far lower than the national standard is effectively ensured.
In the embodiment, once the lower end of the cloth bag is separated from the fixed frame in the working process of the cloth bag dust removal assembly, the air flow of the flue gas pushes the cloth bag to move towards the purification box, and after the dust screen is clamped, the flue gas after secondary dust removal can be subjected to tertiary dust removal, and the condition that the cloth bag is pushed into the purification box along with the flue gas flow due to the falling of the cloth bag can be reduced; the production safety in the production process is improved, and the burning explosion condition caused by the accumulation of the flue gas due to the blockage of the cloth bag is reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides an electricity bag removes dust and high-efficient flue gas processing system of SCR denitration integration which characterized in that includes: a primary treatment system which carries out denitration and dust removal on the discharged flue gas,
the detection system is used for detecting primary flue gas discharged after primary denitration and dust removal of the primary treatment system;
and controlling the primary flue gas discharged after primary denitration and dust removal according to the detection result and discharging the primary flue gas to the first discharge tower or a second discharge tower in the secondary treatment system.
2. The integrated high-efficiency flue gas treatment system with electric bag dust removal and SCR denitration of claim 1, further comprising a first valve for discharging the primary flue gas from the first discharge tower if the flue gas after primary denitration and dust removal meets the emission standard;
and if the flue gas after the primary denitration and dust removal does not meet the emission standard, starting a second valve to discharge the primary flue gas to a secondary treatment system, wherein the secondary treatment system is used for carrying out secondary denitration and dust removal on the primary flue gas and discharging the secondary flue gas after the secondary denitration and dust removal from a second discharge tower.
3. The integrated high-efficiency flue gas treatment system with electric bag dust removal and SCR denitration of claim 1, wherein the output end of the primary treatment system is provided with a detection system, the detection system is a flue gas detection device, and the flue gas detection device is used for detecting harmful substances in the primary flue gas discharged after primary denitration and dust removal.
4. The integrated high-efficiency flue gas treatment system with electric bag dust removal and SCR denitration of claim 1, wherein the primary treatment system and the secondary treatment system both comprise a denitration system and a dust removal system,
the system comprises a denitration system and a dust removal system, wherein the dust removal system is used for carrying out dust removal treatment on the discharged flue gas and discharging the flue gas subjected to dust removal to the denitration system; and the denitration system is used for denitration of the dedusted flue gas.
5. The integrated electric bag dedusting and SCR denitration high-efficiency flue gas treatment system as claimed in claim 4, wherein an input end of the dedusting system is provided with an air inlet flue, the air inlet flue is used for inputting waste gas into the dedusting system, an output end of the dedusting system is communicated with the denitration system through a first smoke exhaust pipe, an output end of the denitration system is communicated with an exhaust tower through a second smoke exhaust pipe, and the exhaust tower is a first exhaust tower or a second exhaust tower.
6. The integrated high-efficiency flue gas treatment system for electric bag dust removal and SCR denitration of claim 4, wherein the dust removal system comprises: the box body comprises a first dust removal box and a second dust removal box, the input end of the first dust removal box is communicated with the air inlet flue through the air inlet flue,
first dust removal case and second dust removal case communicate the setting in proper order in the box, the output intercommunication purifying box of second dust removal case, the purifying box is used for discharging the flue gas of second dust removal case output to first exhaust pipe.
7. The integrated high-efficiency flue gas treatment system with electric bag dust removal and SCR denitration as claimed in claim 6, wherein an electric dust removal assembly is arranged in the first dust removal box, a dust hopper is arranged below the first dust removal box, one side of the first dust removal, which is far away from the flue gas inlet pipeline, is communicated with the second dust removal box through a first communication pipeline,
the second removes dust the incasement and is provided with the sack and removes dust subassembly, the sack removes dust subassembly is used for carrying out the secondary with first dust removal case exhaust flue gas and removes dust, the below of second dust removal case is provided with a plurality of dust hoppers, each the dust hopper be used for with the dust or the bits foam of sack removal subassembly interception are collected, the lower bottom surface of dust hopper is provided with the ash valve, the ash valve be used for with dust or bits foam in the dust hopper discharge extremely the purifying box.
8. The integrated high-efficiency flue gas treatment system for electric bag dust removal and SCR denitration of claim 7, wherein a dust cleaning device is further arranged in the purification box and used for cleaning dust or scraps attached to the bag-type dust removal assembly; and the second dust removal box is used for filtering dust in the smoke exhausted by the second dust removal box.
9. The integrated high-efficiency flue gas treatment system for electric bag dust removal and SCR denitration of claim 8, wherein the ash removal device is hoisted on the inner top surface of the purification box, and the ash removal device comprises:
the lower surface of the hanger rail is provided with a first sliding chute, a sliding plate is arranged in the first sliding chute in a sliding manner, and the upper surface of the hanger rail is hung on the inner top surface of the purification box through a hanger with a U-shaped structure;
a first rotating shaft is rotatably arranged on the hanging bracket, a first rotating disc is arranged on one surface of the first rotating shaft, which is close to the hanging rail, a swing rod is arranged on the lower bottom surface of the first rotating disc, the swing rod and the circle center of the first rotating disc are arranged at intervals, a first sliding block is arranged at the other end of the swing rod, and the first sliding block reciprocates in a second sliding groove of a second push rod;
a through notch is formed in the first sliding groove, the notch is used for connecting the lower surface of the second push rod with the upper surface of the sliding plate, and the second push rod drives the sliding plate to move along with the reciprocating motion of the swing rod;
the lower surface of the sliding plate is provided with a third sliding groove, two sides of the hanger rail are respectively provided with a plurality of groups of first vertical plates which are oppositely arranged, each group of first vertical plates are provided with a first push rod in a reciprocating manner, the upper top surface of the first push rod is provided with a second slide block, the second slide blocks are matched with the third sliding grooves, the third sliding grooves are of a notch structure formed by connecting a plurality of V-shaped grooves end to end, one end of the first push rod is provided with a dust removing rod which extends downwards, the dust removing rod is of an L structure, and the L end of the L structure is used for pushing or vibrating a cloth bag of a cloth bag dust removing assembly;
and the dust adhered to the cloth bag in the cloth bag dust removal component falls into the dust collecting hopper.
10. The integrated high-efficiency flue gas treatment system for electric bag dust removal and SCR denitration of claim 9, wherein a high-pressure pipeline is arranged on the lower bottom surface of the first push rod and is communicated with an extension pipe,
two ends of the sliding plate are respectively provided with a vertical rod extending downwards, the bottom surface of each vertical rod is provided with an extending plate, the extending plate and the vertical rod form an L-shaped structure, and openings of the L-shaped structure are oppositely arranged;
the upper surface of each extension plate is used for placing a dust screen, and two ends of the dust screen are clamped by a clamping assembly and fixed on the extension plates;
the extension pipe is used for spraying or adsorbing the dust screen at high pressure to clean dust;
the upper surface of the extension plate is also provided with a trigger switch, the trigger switch is started through a trigger rod on the clamping assembly, and the trigger switch is used for opening or closing an electromagnetic valve of the extension pipe.
CN202111506989.XA 2021-12-10 2021-12-10 High-efficient flue gas processing system of electricity bag dust removal and SCR denitration integration Pending CN114130170A (en)

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Application Number Priority Date Filing Date Title
CN202111506989.XA CN114130170A (en) 2021-12-10 2021-12-10 High-efficient flue gas processing system of electricity bag dust removal and SCR denitration integration

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CN114130170A true CN114130170A (en) 2022-03-04

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06292817A (en) * 1993-04-12 1994-10-21 Hitachi Ltd Nox-containing gas purifying method and purifying device
CN205516981U (en) * 2015-12-18 2016-08-31 常德金鹏印务有限公司 Printing processing equipment and dust collector thereof
CN207413074U (en) * 2017-11-15 2018-05-29 湖州南太湖热电有限公司 Coal-burning boiler electrostatic fabric filter
CN110302605A (en) * 2019-07-03 2019-10-08 曹杰 A kind of flyash processing bag filter
CN112156642A (en) * 2020-10-14 2021-01-01 刘德早 Desulfurization and denitrification dust removal device
CN212594830U (en) * 2020-06-11 2021-02-26 广西玉林市铭锐铸造材料有限公司 Waste gas treatment device for waste sand thermal method regeneration equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06292817A (en) * 1993-04-12 1994-10-21 Hitachi Ltd Nox-containing gas purifying method and purifying device
CN205516981U (en) * 2015-12-18 2016-08-31 常德金鹏印务有限公司 Printing processing equipment and dust collector thereof
CN207413074U (en) * 2017-11-15 2018-05-29 湖州南太湖热电有限公司 Coal-burning boiler electrostatic fabric filter
CN110302605A (en) * 2019-07-03 2019-10-08 曹杰 A kind of flyash processing bag filter
CN212594830U (en) * 2020-06-11 2021-02-26 广西玉林市铭锐铸造材料有限公司 Waste gas treatment device for waste sand thermal method regeneration equipment
CN112156642A (en) * 2020-10-14 2021-01-01 刘德早 Desulfurization and denitrification dust removal device

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