CN111888916B - Deep treatment method and treatment device for tail gas of fluidized bed furnace for gypsum board production - Google Patents
Deep treatment method and treatment device for tail gas of fluidized bed furnace for gypsum board production Download PDFInfo
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- CN111888916B CN111888916B CN202010661548.6A CN202010661548A CN111888916B CN 111888916 B CN111888916 B CN 111888916B CN 202010661548 A CN202010661548 A CN 202010661548A CN 111888916 B CN111888916 B CN 111888916B
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 21
- 239000010440 gypsum Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 15
- 239000007789 gas Substances 0.000 claims abstract description 85
- 239000003546 flue gas Substances 0.000 claims abstract description 52
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 50
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000005192 partition Methods 0.000 claims abstract description 30
- 239000000428 dust Substances 0.000 claims abstract description 23
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 16
- 239000002893 slag Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims description 10
- 238000009835 boiling Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/78—Cleaning the electrodes by washing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The embodiment of the invention discloses a device for deeply treating tail gas of a fluidized bed furnace for producing gypsum boards, which comprises a tank body, a flue gas inlet pipe, a flue gas exhaust pipe and a slag ash discharge port, wherein the flue gas inlet pipe, the flue gas exhaust pipe and the slag ash discharge port are arranged on the tank body, the tank body is internally divided into a left chamber and a right chamber by a partition plate, the end part of the partition plate is provided with a tangential mechanism, an automatic pressure valve is arranged in the flue gas exhaust pipe, the inner wall of the tank body is provided with uniformly distributed gas plates, the tops of the left chamber and the right chamber are respectively provided with a wet electric dust removal assembly, the top of the wet electric dust removal assembly is provided with a spray pipe network, the wet electric dust removal assembly comprises an anode plate and a cathode net, the anode plate is correspondingly distributed on the top of the anode plate, through flow holes are distributed on the anode plate, the tangential mechanism is used for switching the alternate work of the left chamber and the right chamber, so that the dead time of the tail gas in the tank body is prolonged, and the oxidation and denitration reaction process of ozone is improved, and the spraying frequency is reduced, so that the gypsum board spraying device is suitable for the content of tail gas of the fluidized bed furnace in different production stages of gypsum boards.
Description
Technical Field
The embodiment of the invention relates to the technical field of tail gas treatment, in particular to a method and a device for deeply treating tail gas of a fluidized bed furnace for gypsum board production.
Background
The fluidized bed furnace during operation of gypsum board production usefulness can produce the tail gas that contains a large amount of coal ashes, will pollute air and environment when these tail gases are discharged the air, the desulfurizing tower of current fluidized bed furnace tail gas treatment can still have some shortcomings, because NO in the tail gas is the constant, current solution is through real-time detection's mode, and the defect that this kind of mode exists includes, when flue gas flow rate is very fast, can make the detection error appear, simultaneously because at the atomizing in-process that sprays, the temperature of flue gas can change, steam can absorb partial ozone, it is abundant to cause the unable reaction of NO in the flue gas, and the consumption of ozone is not being considered, let in to the maximum and carry out the oxidation denitration, unnecessary ozone will combine with the water and produce acid material, thereby produce certain corrosivity to jar body and flue gas pipeline.
Disclosure of Invention
Therefore, the embodiment of the invention provides a gypsum board production fluidized bed furnace tail gas advanced treatment method and a gypsum board production fluidized bed furnace tail gas advanced treatment device, and solves the problem that the existing ozone denitration device cannot effectively control an ozone oxidation process and ozone, so that the tail gas treatment is insufficient.
In order to achieve the above object, an embodiment of the present invention provides the following:
the deep treatment device for the tail gas of the fluidized bed furnace for gypsum board production comprises a tank body, and a flue gas inlet pipe, a flue gas exhaust pipe and a slag ash discharge port which are arranged on the tank body, and is characterized in that the tank body is divided into a left chamber and a right chamber through a partition plate, a tangential mechanism for circularly switching the opening states of the left chamber and the right chamber is arranged at the end part of the partition plate positioned at the flue gas inlet pipe, and an automatic pressure valve is arranged at the joint of the flue gas exhaust pipe and the tank body;
an evenly distributed gas plate for conveying ozone into the tank body is arranged on the inner wall of the tank body positioned at the top of the tangential mechanism, wet-type electric dust removal assemblies are arranged at the tops of the left cavity and the right cavity, and a spraying pipe network is arranged at the top of each wet-type electric dust removal assembly;
the wet-type electric precipitation assembly comprises an anode plate and a cathode net, the anode plate is arrayed on the partition plate, the cathode net is correspondingly distributed on the top of the anode plate, and through flow holes are distributed in the anode plate.
As a preferred scheme of the present invention, the tangential mechanism includes a rotating shaft located at the bottom of the partition plate and located on the same plane as the partition plate, a step motor for driving the rotating shaft to rotate is disposed on a side wall of the tank body, two mutually perpendicular fan plates are fixedly mounted along an axial direction of the rotating shaft, a key sleeve shaft is sleeved on the rotating shaft, an edge slot matched with the key sleeve shaft is disposed on the fan plate, and a torque motor for driving the key sleeve shaft to rotate is disposed on a side wall of the tank body.
As a preferable scheme of the present invention, the width of the fan plate is the same as the distance from the bottom end of the partition plate to the rotating shaft, the widths of the partition plate, the left chamber and the right chamber are the same, and the tail end of the fan plate is provided with an arc-shaped edge seal.
As a preferable scheme of the invention, the uniformly distributed gas plate comprises a plate body and honeycomb tubes arranged on the plate body, wherein uniformly distributed holes corresponding to tube openings of the honeycomb tubes are formed in the plate body, and jet holes are formed in the side walls of the uniformly distributed holes.
As a preferred scheme of the invention, the anode plate and the cathode mesh are both arranged on the partition plate through an insulating mesh seat, the anode plate is formed by two electrode plate bodies with an included angle of 60-180 degrees, and the included angle between the anode plate and the partition plate is 60-90 degrees.
In a preferred embodiment of the present invention, a heating device is disposed in the body of the partition plate, which is biased to the top of the plate body.
The invention provides a deep treatment method of tail gas of a fluidized bed furnace for gypsum board production, which comprises the following steps:
s100, introducing tail gas of the fluidized bed furnace in the tank body from a flue gas inlet pipe, allowing the tail gas to enter a left chamber or a right chamber under the operation of a tangential mechanism, and injecting ozone into honeycomb pipes through injection air holes when the tail gas of the fluidized bed furnace passes through the honeycomb pipes uniformly distributed on an air plate to perform selective ozone oxidation on the tail gas of the fluidized bed furnace;
s200, the oxidized tail gas of the fluidized bed furnace entering the left chamber or the right chamber continues to flow to the right chamber or the left chamber under the limitation of an automatic pressure valve, a wet electric dust removal assembly in the left chamber or the right chamber opened by the tangential mechanism starts to work, and the oxidized tail gas of the fluidized bed furnace is treated;
and S300, when the air pressure in the tank body reaches a preset value, the automatic pressure valve is opened, and the treated tail gas of the fluidized bed furnace is discharged through the flue gas exhaust pipe.
As a preferable scheme of the invention, when the flow rate of the tail gas of the fluidized bed furnace introduced into the tank body from the flue gas inlet pipe is increased, the tangential mechanism opens an overflow channel between the left chamber and the right chamber to form air flow circulation between the left chamber and the right chamber.
As a preferable aspect of the present invention, in S300, the predetermined value of the pressure in the tank is calculated based on the flow rate of the exhaust gas entering the flue gas inlet pipe, the smoke content in the exhaust gas, and the sufficient oxidation efficiency per unit of ozone, and the maximum pressure in the tank that does not affect the fluid pressure at the flue gas inlet pipe is set as the operating condition for triggering the automatic pressure valve.
In S300, the maximum air pressure in the tank that does not affect the fluid pressure at the flue gas inlet pipe is determined by setting the operating time difference between the tangential mechanism and the automatic pressure valve.
The embodiment of the invention has the following advantages:
the invention utilizes the tangential mechanism to switch the alternate work of the left chamber and the right chamber, so that the time of the tail gas in the tank body is prolonged, the treated tail gas in the tank body is controlled by the automatic pressure valve to be discharged through the flue gas discharge pipe after being treated in the most advanced optimization treatment, the oxidation and denitration reaction process of ozone is improved, the spraying frequency is reduced, and the invention is suitable for the content of the tail gas of the fluidized bed furnace in different production stages of gypsum boards.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic structural view of a can body according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a tangential mechanism in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wet electric dust removal assembly according to an embodiment of the present invention.
In the figure:
1-tank body; 2-flue gas inlet pipe; 3-flue gas calandria; 4-slag ash discharge port; 5-a partition plate; 6-left chamber; 7-a right chamber; 8-a tangential mechanism; 9-automatic pressure valve; 10-uniformly distributing gas plates; 11-wet electric precipitation component; 12-spraying pipe network; 13-an anode plate; 14-a cathode mesh; 15-through flow holes; 16-an insulating mesh seat;
101-a plate body; 102-a honeycomb tube; 103-uniformly distributing holes; 104-an injection hole;
801-rotating shaft; 802-a stepper motor; 803-fan plate; 804-a key sleeve shaft; 805-edge grooving; 806-a torque motor; 807-edge seal.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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.
As shown in fig. 1-3, the invention provides a deep treatment device for tail gas of a fluidized bed furnace for gypsum board production, which comprises a tank body 1, and a flue gas inlet pipe 2, a flue gas exhaust pipe 3 and a slag ash discharge port 4 which are arranged on the tank body 1;
in order to improve the oxidation reaction process of ozone, reduce the spraying times and adapt to the content of tail gas of a boiling furnace in different production stages of gypsum boards, the inside of a tank body 1 is divided into a left chamber 6 and a right chamber 7 through a partition plate 5, a tangential mechanism 8 for circularly switching the opening states of the left chamber 6 and the right chamber 7 is arranged at the end part of the partition plate 5 positioned at a flue gas inlet pipe 2, and an automatic pressure valve 9 is arranged at the joint of a flue gas exhaust pipe 3 and the tank body 1.
The tangential mechanism 8 is used for switching the alternate work of the left chamber 6 and the right chamber 7, so that the stagnation time of the tail gas in the tank body is prolonged, and the tail gas treated in the tank body 1 is controlled by the automatic pressure valve 9 to be discharged through the flue gas discharge pipe 3 after being subjected to the most advanced optimization treatment.
The inner wall of the tank body 1 at the top of the tangential mechanism 8 is provided with an evenly distributed gas plate 10 for conveying ozone into the tank body 1, the tops of the left cavity 6 and the right cavity 7 are provided with wet type electric dust removal assemblies 11, and the tops of the wet type electric dust removal assemblies 11 are provided with a spraying pipe network 12.
The tail gas of the fluidized bed furnace entering the left chamber 6 or the right chamber 7 from the flue gas inlet pipe 2 is mixed with ozone generated by the uniformly distributed gas plates 10 when passing through the uniformly distributed gas plates 10 to generate selective oxidation reaction, and NO in the flue gas is mixed and reacted to generate high valence state N 2 O 5 Because NO in the flue gas is not the constant, current solution is the mode through real-time detection, and the defect that this kind of mode exists includes, when flue gas flow rate is very fast, can make the detection error appear, simultaneously because at the in-process that the atomizing sprayed, the temperature of flue gas can change, the ozone of part can be absorbed to steam, it is abundant to cause the unable reaction of NO in the flue gas, and not considering ozone's consumption, let in to carry out the oxidation denitration with the maximum, unnecessary ozone will combine with the water and produce acid material, thereby produce certain corrosivity to jar body and flue gas pipeline.
The uniformly distributed gas plate 10 comprises a plate body 101 and a honeycomb tube 102 installed on the plate body 101, wherein the plate body 101 is provided with uniformly distributed holes 103 corresponding to the tube openings of the honeycomb tube 102, the side walls of the uniformly distributed holes 103 are provided with jet holes 104, and the jet holes 104 are connected with an external ozone generator through a pipeline.
The tail gas of the boiling furnace enters the left chamber 6 or the right chamber 7 under the work of the tangential mechanism 8, when the tail gas of the boiling furnace passes through the honeycomb tubes 102 on the uniformly distributed gas plates, the injection gas holes 104 inject ozone to the radial direction of the uniformly distributed holes 103, the tail gas of the boiling furnace is subjected to selective ozone oxidation, and an oxidation denitration channel is formed through the honeycomb tubes 102.
When evenly distributed gets into the boiling furnace tail gas of left cavity 6 or right cavity 7, the realization is to the shrink and the flow equalizing of the tail gas that gets into left cavity 6 and right cavity 7, and radial jet's air current forms the air curtain when the degree of mixing of increase tail gas and ozone, make the even distribution gas board 10 two-layer upper and lower minute pressure differential that exists, minute pressure differential can make the velocity of flow that gets into left cavity 6 or right cavity 7 slow down, and do not work at left cavity 6 or right cavity 7 before automatic pressure valve 9 and keep the state of certain pressure, provide abundant reaction time for ozone oxidation.
The tail gas of the fluidized bed furnace which enters the left chamber 6 or the right chamber 7 and is oxidized continues to flow to the right chamber 7 or the left chamber 6 under the limitation of the automatic pressure valve 9, the wet electric dust removal assembly which is opened by the tangential mechanism 8 in the left chamber 6 or the right chamber 7 starts to work, the tail gas of the fluidized bed furnace which is oxidized is subjected to dust removal, liquid drop, aerosol and other treatment, the treated flue gas is continuously blown into the other chamber for pressure accumulation, and the ozone sprayed by the spray holes in the process can be fully reacted.
Further, at this time, whether to continuously supply ozone may be judged by monitoring the gas pressure at the injection gas hole 103.
The pressure in the tank body 1 reaches a set value, the automatic pressure valve 9 is opened, the smoke begins to be discharged, when the automatic pressure valve 9 is in a closed state, the smoke exhaust pipe 3 is connected with the absorption tower or other subsequent processing mechanisms, so that the interior of the smoke exhaust pipe 3 is in a negative pressure state, when the automatic pressure valve 9 is opened, the smoke processed in the tank body 1 is rapidly discharged from the smoke exhaust pipe 3, and at the moment, the tangential mechanism 8 opens another chamber to perform the circulating reciprocating work.
Furthermore, when the content of smoke dust in the tail gas is large, the two wet-type electric dust removal assemblies work synchronously.
Wet-type electric precipitation subassembly 11 is including array anode plate 13 on division board 5, and correspond the negative pole net 14 that distributes at anode plate 13 top, it has through-flow hole 15 to distribute on anode plate 13, wet-type electric precipitation subassembly 11 during operation, anode plate 13 and negative pole net 14 produce electric charge, carry out the dust collection of flue gas, the opening and the closure of left cavity 6 and right cavity 7 are constantly switched at tangential mechanism 8, the pressure in left cavity 6 and the right cavity 7 constantly produces the change, the change of atmospheric pressure is the same in through-flow hole 15, can prevent through-flow hole 15 on wet-type electric precipitation subassembly 11's anode plate 13 like this and block because the dust collection volume is great.
Usually, when the anode plate in the wet-type electric dust collection assembly frame is a flat panel, more dust is collected, and the anode plate cannot be sprayed and cleaned through the spraying pipe network 12 in time, so that the dust is hardened on the anode plate, and the penetration hole 15 is formed in the anode plate 13, so that the smoke hardened on the anode plate 13 is damaged when the pressure in the tank body 1 changes, and effective cleaning is realized.
The tangential mechanism 8 comprises a rotating shaft 801 which is positioned at the bottom of the partition plate 5 and is positioned on the same plane with the partition plate 5, a stepping motor 802 for driving the rotating shaft 801 to rotate is arranged on the side wall of the tank body 1, and two mutually perpendicular fan plates 803 are fixedly arranged along the axial direction of the rotating shaft 801;
the rotating shaft 801 is sleeved with a key sleeve shaft 804, the fan plate 803 is provided with an edge slot 805 matched with the key sleeve shaft 804, and the side wall of the tank body 1 is provided with a torque motor 806 for driving the key sleeve shaft 804 to rotate.
Further, the key sleeve shaft 804 is driven to rotate by the torque motor 806, so that the key sleeve shaft 804 is separated from the combination state with the edge groove 805 on the fan plate 803, a communication passage between the left chamber 6 and the right chamber 7 is opened, the left chamber 6 and the right chamber 7 are circulated to the right chamber 7 or the left chamber 6 again, and the deep oxidation denitration reaction is completed by oxidation again.
The width of the fan plate 803 is the same as the distance from the bottom end 5 of the partition plate 5 to the rotating shaft 801, and the width of the partition plate 5 is the same as the width of the left chamber 6 and the right chamber 7, and the end of the fan plate 803 is provided with an arc-shaped edge seal 807.
The anode plate 13 and the cathode mesh 14 are both arranged on the partition plate 5 through an insulating mesh seat 16, the anode plate 13 is formed by two electrode plate bodies with an included angle of 60-180 degrees, and the included angle between the anode plate 13 and the partition plate 5 is 60-90 degrees.
A heating device is provided in the body of the partition plate 5, which is biased toward the top of the plate body 101.
The invention provides a method for deeply treating tail gas of a gypsum board production fluidized bed furnace by using the device, which comprises the following steps:
s100, introducing tail gas of the fluidized bed furnace in the tank body from a flue gas inlet pipe, allowing the tail gas to enter a left chamber or a right chamber under the operation of a tangential mechanism, and injecting ozone into honeycomb pipes through injection air holes when the tail gas of the fluidized bed furnace passes through the honeycomb pipes uniformly distributed on an air plate to perform selective ozone oxidation on the tail gas of the fluidized bed furnace;
s200, the oxidized tail gas of the fluidized bed furnace entering the left chamber or the right chamber continues to flow to the right chamber or the left chamber under the limitation of an automatic pressure valve, a wet electric dust removal assembly in the left chamber or the right chamber opened by the tangential mechanism starts to work, and the oxidized tail gas of the fluidized bed furnace is treated;
and S300, when the air pressure in the tank body reaches a preset value, the automatic pressure valve is opened, and the treated tail gas of the fluidized bed furnace is discharged through the flue gas exhaust pipe.
When the flow rate of the tail gas of the fluidized bed furnace introduced into the tank body from the flue gas inlet pipe is increased, the tangential mechanism opens an overflow channel between the left chamber and the right chamber to form airflow circulation between the left chamber and the right chamber.
In S300, the predetermined value of the pressure in the tank is calculated according to the flow rate of the exhaust gas entering the flue gas inlet pipe, the smoke content in the exhaust gas, and the sufficient oxidation efficiency of the unit ozone, and the maximum pressure in the tank that does not affect the fluid pressure at the flue gas inlet pipe is set as the operating condition for triggering the automatic pressure valve.
In S300, the maximum air pressure in the tank body which does not influence the fluid pressure at the flue gas inlet pipe is determined by setting the working time difference between the tangential mechanism and the automatic pressure valve.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. The tail gas deep treatment device for the gypsum board production fluidized bed furnace comprises a tank body (1), and a flue gas inlet pipe (2), a flue gas exhaust pipe (3) and a slag ash discharge port (4) which are arranged on the tank body (1), and is characterized in that the tank body (1) is internally divided into a left chamber (6) and a right chamber (7) through a partition plate (5), a tangential mechanism (8) for circularly switching the opening states of the left chamber (6) and the right chamber (7) is arranged at the end part of the partition plate (5) at the flue gas inlet pipe (2), and an automatic pressure valve (9) is arranged at the joint of the flue gas exhaust pipe (3) and the tank body (1);
a uniformly distributed gas plate (10) for conveying ozone into the tank body (1) is arranged on the inner wall of the tank body (1) at the top of the tangential mechanism (8), wet electric dust removal assemblies (11) are arranged at the tops of the left cavity (6) and the right cavity (7), and a spray pipe network (12) is arranged at the top of each wet electric dust removal assembly (11);
the wet electric dust removal assembly (11) comprises anode plates (13) arrayed on the partition plate (5) and cathode nets (14) correspondingly distributed on the tops of the anode plates (13), and through flow holes (15) are distributed in the anode plates (13);
tangential mechanism (8) including being located division board (5) bottom, and with division board (5) are located coplanar axis of rotation (801), be provided with the drive on the lateral wall of the jar body (1) axis of rotation (801) pivoted step motor (802), follow the axial fixity of axis of rotation (801) installs two mutually perpendicular's fan board (803), the cover is equipped with key sleeve axle (804) on axis of rotation (801), be provided with on fan board (803) with key sleeve axle (804) matched with edge fluting (805), be provided with the drive on the lateral wall of the jar body (1) key sleeve axle (804) pivoted torque motor (806).
2. The deep treatment device for the tail gas of the gypsum board production boiling furnace is characterized in that the width of the fan plate (803) is the same as the distance from the bottom end of the partition plate (5) to the rotating shaft (801), the width of the partition plate (5) is the same as the width of the left chamber (6) and the width of the right chamber (7), and the tail end of the fan plate (803) is provided with an arc-shaped edge seal (807).
3. The deep treatment device for the tail gas of the gypsum board production boiling furnace according to claim 1, wherein the uniformly-distributed gas plate (10) comprises a plate body (101) and a honeycomb tube (102) installed on the plate body (101), the plate body (101) is provided with uniformly-distributed holes (103) corresponding to the tube openings of the honeycomb tube (102), and the side wall of each uniformly-distributed hole (103) is provided with an injection hole (104).
4. The deep treatment device for the tail gas of the gypsum board production fluidized bed furnace according to claim 1, wherein the anode plate (13) and the cathode mesh (14) are both installed on the partition plate (5) through an insulating mesh seat (16), the anode plate (13) is formed by two electrode plate bodies with an included angle of 60-180 degrees, and the included angle between the anode plate (13) and the partition plate (5) is 60-90 degrees.
5. A boiling furnace tail gas advanced treatment device for gypsum board production according to claim 3, characterized in that a heating device is arranged in the body of the partition plate (5) which is deviated from the top of the plate body (101).
6. The treatment method of the tail gas advanced treatment device of the gypsum board production boiling furnace based on any one of claims 1 to 5 is characterized by comprising the following specific steps:
s100, introducing tail gas of the fluidized bed furnace in the tank body from a flue gas inlet pipe, allowing the tail gas to enter a left chamber or a right chamber under the operation of a tangential mechanism, and when the tail gas of the fluidized bed furnace passes through honeycomb pipes uniformly distributed on an air plate, injecting ozone into the honeycomb pipes through injection air holes to perform selective ozone oxidation on the tail gas of the fluidized bed furnace;
s200, the oxidized tail gas of the fluidized bed furnace entering the left chamber or the right chamber continues to flow to the right chamber or the left chamber under the limitation of an automatic pressure valve, a wet electric dust removal assembly in the left chamber or the right chamber opened by the tangential mechanism starts to work, and the oxidized tail gas of the fluidized bed furnace is treated;
and S300, when the air pressure in the tank body reaches a preset value, the automatic pressure valve is opened, and the treated tail gas of the fluidized bed furnace is discharged through the flue gas exhaust pipe.
7. A method according to claim 6, wherein the tangential mechanism opens an overflow channel between the left and right chambers to circulate the gas stream between the left and right chambers when the flow rate of the boiler off-gas introduced into the tank through the flue gas inlet pipe increases.
8. A treatment method according to claim 6, wherein the predetermined value of the pressure in the tank is calculated based on the amount of the exhaust gas flowing into the flue gas inlet pipe and the amount of smoke in the exhaust gas, and the sufficient oxidation efficiency per ozone, and the maximum pressure in the tank which does not affect the fluid pressure at the flue gas inlet pipe is set as the operating condition for triggering the automatic pressure valve in S300.
9. The process of claim 8, wherein in step S300, the maximum pressure in the tank that does not affect the fluid pressure at the flue gas inlet is determined by setting the operating time difference between the tangential mechanism and the automatic pressure valve.
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| EP3100781A1 (en) * | 2015-06-01 | 2016-12-07 | RUDIS poslovno zdruzenje za inzeniring in izgradnjo objekov d.o.o. | Process and apparatus for high performance flue gas cleaning |
| CN208626961U (en) * | 2018-07-25 | 2019-03-22 | 河南爱尔福克化学股份有限公司 | A kind of absorption tower for polyaluminum chloride production |
| CN110302641A (en) * | 2019-04-25 | 2019-10-08 | 太仓北新建材有限公司 | A kind of desulfurizer and sulfur removal technology of flue gas |
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| CN105080311B (en) * | 2015-07-28 | 2017-12-29 | 浙江天蓝环保技术股份有限公司 | A kind of fire coal boiler fume ultra-clean discharge integrated tower and handling process |
| CN105797577B (en) * | 2016-04-27 | 2019-03-01 | 华北电力大学 | A kind of methyl hydride catalyzed reduction NOxTechnique and catalyst |
| CN210752106U (en) * | 2019-10-09 | 2020-06-16 | 艾克赛尔能源科技江苏有限公司 | Denitration device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3100781A1 (en) * | 2015-06-01 | 2016-12-07 | RUDIS poslovno zdruzenje za inzeniring in izgradnjo objekov d.o.o. | Process and apparatus for high performance flue gas cleaning |
| CN208626961U (en) * | 2018-07-25 | 2019-03-22 | 河南爱尔福克化学股份有限公司 | A kind of absorption tower for polyaluminum chloride production |
| CN110302641A (en) * | 2019-04-25 | 2019-10-08 | 太仓北新建材有限公司 | A kind of desulfurizer and sulfur removal technology of flue gas |
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Address after: 314000 375 Haigang Avenue, Xitangqiao street, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: Mount Taishan Gypsum (Jiaxing) Co.,Ltd. Address before: 314000 375 Haigang Avenue, Xitangqiao street, Haiyan County, Jiaxing City, Zhejiang Province Patentee before: BEIJING NEW BUILDING MATERIAL (JIAXING) CO.,LTD. |
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