WO2022105008A1 - 一种模块化脱硫脱硝脱voc除尘一体系统 - Google Patents

一种模块化脱硫脱硝脱voc除尘一体系统 Download PDF

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Publication number
WO2022105008A1
WO2022105008A1 PCT/CN2020/138901 CN2020138901W WO2022105008A1 WO 2022105008 A1 WO2022105008 A1 WO 2022105008A1 CN 2020138901 W CN2020138901 W CN 2020138901W WO 2022105008 A1 WO2022105008 A1 WO 2022105008A1
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Prior art keywords
dust
chamber
denitration
desulfurization
air
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PCT/CN2020/138901
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English (en)
French (fr)
Inventor
宋朋泽
李刚
Original Assignee
浙江鸿盛新材料科技集团股份有限公司
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Priority claimed from CN202022728775.4U external-priority patent/CN214020057U/zh
Priority claimed from CN202011324982.1A external-priority patent/CN112403231A/zh
Application filed by 浙江鸿盛新材料科技集团股份有限公司 filed Critical 浙江鸿盛新材料科技集团股份有限公司
Publication of WO2022105008A1 publication Critical patent/WO2022105008A1/zh

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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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • 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
    • B01D53/75—Multi-step processes
    • 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
    • B01D53/86—Catalytic processes

Definitions

  • the present application relates to the technical field of flue gas dedusting, and more particularly, to a modular integrated system for desulfurization, denitration, and VOC dedusting.
  • the purpose of this application is to provide a modular desulfurization, denitration, and VOC dust removal integrated system.
  • the structural design of the modular desulfurization, denitration, and VOC dust removal integrated system can effectively reduce dust and realize the synergistic treatment of desulfurization, denitration, and dust removal.
  • a modular integrated system for desulfurization, denitration, and VOC dust removal comprising:
  • the top of the dust chamber is provided with at least one air inlet, and the bottom of the dust chamber is provided with at least one ash outlet;
  • a desulfurization catalyst injection device arranged in the air inlet duct
  • a plurality of filter elements loaded with denitration catalysts a plurality of the filter elements are arranged inside the dust chamber, and there is a gap between two adjacent filter elements, and the inside and/or surface of the filter elements are provided with denitrification catalyst;
  • the clean air chamber is arranged on one side of the dust chamber, and the airflow in the dust chamber flows through the filter element and enters the clean air chamber;
  • An air outlet duct the air inlet end of the air outlet duct is communicated with the air outlet of the clean air chamber.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal further includes a pre-charging device, and the pre-charging device is arranged upstream of the plurality of filter elements.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal further includes a plurality of guide plates arranged in the dust chamber, and the guide plates are inclined relative to the side wall of the dust chamber.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal further includes a diversion device arranged in the air inlet pipe, the diversion device is located upstream of the desulfurization catalyst injection device, and the diversion device is located upstream of the desulfurization catalyst injection device.
  • the device directs the airflow to spiral downward.
  • the filter element is a filter bag, and a denitration catalyst module is arranged in the filter bag.
  • the air inlet duct includes an air inlet duct connected in sequence and an air inlet box connected to the air outlet end of the air inlet duct;
  • the air outlet duct includes sequentially connected air inlet pipes. The connected air outlet pipe and the air outlet box connected with the air inlet end of the air outlet pipe;
  • the air inlet box and the air outlet box are both horn-shaped, the ventilation section of the air inlet box gradually increases along the direction close to the dust chamber, and the ventilation section of the air outlet box is along the direction close to the clean air chamber. gradually increase.
  • the number of the clean air chambers is two, and the two clean air chambers are respectively disposed on opposite sides of the dust chamber.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal further includes a VOC catalyst module, and the VOC catalyst module is arranged in the clean air chamber.
  • the modular integrated system for desulfurization, denitration, and VOC dust removal further includes an ash hopper connected to the ash outlet of the dust chamber and an ash conveying device connected to the bottom of the ash hopper.
  • the dust chamber and the clean air chamber are integrated into the same box, and the dust chamber and the clean air chamber are separated by a partition .
  • the dust-laden air enters the dust chamber through the air inlet duct and the air inlet at the top of the dust chamber, and the desulfurization catalyst spray device in the air inlet duct atomizes and sprays the desulfurizer.
  • the desulfurizer can be atomized into droplets with a diameter of 0.05-0.8mm, and the flue gas enters the desulfurizer atomization suction zone in the air inlet duct and then contacts and reacts with the desulfurizer to complete the removal of sulfide in the flue gas. .
  • the gas in the dust chamber enters a plurality of filter elements for filtration, and the denitration catalyst supported on the filter elements reacts with nitrogen oxides in the flue gas to complete the removal of nitrogen oxides in the flue gas.
  • the air flow after denitration and filtering by multiple filters enters the clean air chamber, and finally the gas in the clean air chamber can be discharged through the air outlet pipe.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal may further include a VOC (volatile organic matter) catalyst module, and the VOC catalyst module 19 is arranged in the clean air chamber.
  • the VOC catalyst module 19 is used to remove VOCs from the flue gas.
  • a VOC catalyst module 19 is provided in each clean air chamber.
  • a sponge VOC catalyst module 19 may be employed. The specific surface area of the sponge-like VOC catalyst module 19 is more than 10 times that of the honeycomb-like VOC catalyst module 19, which can reduce space occupation and improve the catalytic efficiency of VOC.
  • the dust-laden airflow enters the dust chamber through the air inlet at the top of the dust chamber.
  • the direction of the inlet air flow is consistent with the falling direction of the dust, and the dust can descend to the dust outlet at the bottom of the dust chamber, which is more conducive to the dust.
  • the settlement effectively reduces the dust.
  • the flue gas contacts and reacts with the desulfurizer in the air inlet pipe to realize the removal of sulfide, and in the dust chamber, it reacts with the denitration catalyst loaded on the filter element to realize denitrification, and finally realizes the coordinated treatment of dust removal, desulfurization and denitrification.
  • the overall investment is low, the floor area is small, and the working efficiency of flue gas treatment is greatly improved.
  • FIG. 1 is a schematic structural diagram of a modularized desulfurization, denitration, and VOC dust removal integrated system provided by the embodiment of the application;
  • FIG. 2 is a main view of a single-layer modularized desulfurization, denitration, and VOC dust-removing integrated system provided by an embodiment of the present application;
  • FIG. 3 is a schematic diagram of a three-layer modular integrated system for desulfurization, denitration, and VOC dust removal provided by an embodiment of the present application.
  • 1 Modular desulfurization, denitration, and VOC dust removal integrated system
  • 2 air inlet pipe
  • 3 air inlet box
  • 4 pre-charging device
  • 5 deflector
  • 6 dust chamber
  • 7 filter element
  • 8 metal Frame
  • 9 Rapping device
  • 10 Left clean air chamber
  • 11 Left air box
  • 12 Left air outlet pipe
  • 13 Right clean air chamber
  • 14 Right air box
  • 15 Right air outlet duct
  • 16 Ash hopper
  • 17 ash conveying device
  • 18 steel column
  • 19 VOC catalyst module
  • 20 single-layer modular desulfurization, denitration, and VOC dust removal integrated system
  • 30 desulfurization catalyst injection device
  • 31 diversion device.
  • the purpose of this application is to provide a modular integrated system for desulfurization, denitration, and VOC dust removal.
  • the structural design of the modular integrated system for desulfurization, denitration, and VOC dust removal can effectively reduce dust and achieve synergistic treatment of desulfurization, denitration, and dust removal.
  • the modular integrated system for desulfurization, denitration, and VOC dust removal includes a dust chamber 6, an air inlet duct, a desulfurization catalyst injection device 30, a plurality of filters 7, at least one clean air chamber and an outlet air duct.
  • the top of the dust chamber 6 is provided with at least one air inlet. That is, the top of the dust chamber 6 can be opened to form an air inlet, and the ventilation section of the air inlet covers the entire top of the dust chamber 6 . Alternatively, a plurality of air inlets may be opened on the top of the dust chamber 6 .
  • the dust-laden airflow enters the dust chamber 6 through the air inlet at the top of the dust chamber 6 .
  • the bottom of the dust chamber 6 is provided with at least one ash outlet, and the dust is discharged through the ash outlet at the bottom of the dust chamber 6 .
  • the air outlet end of the air inlet duct is communicated with the air inlet of the dust chamber 6 , and the dust-laden airflow in the air inlet duct enters the dust chamber 6 through the air outlet end of the air inlet duct.
  • the desulfurization catalyst injection device 30 is arranged in the air inlet duct, and the desulfurization catalyst injection device 30 is used for atomizing and spraying the desulfurization catalyst.
  • a plurality of filter elements 7 are arranged inside the dust chamber 6 , and there is a gap between two adjacent filter elements 7 . That is, the plurality of filter elements 7 are all fixed in the dust chamber 6 , and at least one end of the filter elements 7 is connected to the side wall of the dust chamber 6 .
  • the filter element 7 is loaded with a denitration catalyst. Specifically, a denitration catalyst is provided inside and/or on the surface of the filter element 7 .
  • the dust chamber 6 is in the shape of a cube, and the longitudinal directions of the plurality of filter elements 7 are arranged parallel to each other.
  • the axial direction of the filter element 7 may be arranged horizontally or the included angle between the axial direction of the filter element 7 and the horizontal plane is an acute angle, which is not limited herein.
  • the number of clean air chambers is one or more.
  • the clean air chamber is arranged on one side of the dust chamber 6, and the airflow in the dust chamber 6 flows through the filter element 7 and then enters the clean air chamber.
  • the air inlet end of the air outlet duct is connected to the air outlet of the clean air chamber, that is, the air entering the clean air chamber after filtering can be discharged through the air outlet duct.
  • the dust-laden air enters the dust chamber 6 through the air inlet duct and the air inlet at the top of the dust chamber 6, and the desulfurization catalyst injection device 30 in the air inlet duct sprays the desulfurization agent.
  • Atomization and spraying specifically, the desulfurizer can be atomized into droplets with a diameter of 0.05-0.8mm, and the flue gas enters the desulfurizer atomization suction area in the air inlet duct and then contacts and reacts with the desulfurizer to complete the sulfide in the flue gas. of removal.
  • the gas in the dust chamber 6 enters a plurality of filter elements 7 for filtration, and at the same time, the denitration catalyst carried on the filter elements 7 reacts with nitrogen oxides in the flue gas to complete the removal of nitrogen oxides in the flue gas.
  • the air flow after denitration and filtering by the plurality of filter elements 7 enters the clean air chamber, and finally the gas in the clean air chamber can be discharged through the air outlet duct.
  • the dust-laden airflow enters the dust chamber 6 through the air inlet at the top of the dust chamber 6, so that the direction of the inlet air flow is consistent with the falling direction of the dust, and the dust can drop to the ash outlet at the bottom of the dust chamber 6, and more It is conducive to the settlement of dust and effectively reduces the dust.
  • the flue gas contacts and reacts with the desulfurizer in the air inlet pipe to realize the removal of sulfide, and in the dust chamber 6, it reacts with the denitration catalyst loaded on the filter element 7 to realize denitrification, and finally realizes dust removal, desulfurization and denitrification.
  • the overall investment is low, the floor area is small, and the working efficiency of flue gas treatment is greatly improved.
  • the dust chamber 6, the clean air chamber and their internal devices together form a modular integrated system 1 for desulfurization, denitration, and VOC removal.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal may further include a precharging device 4 , and the precharging device 4 is arranged upstream of the filter element 7 . That is, the precharging device 4 is located upstream of the plurality of filters 7 , and the dust-laden airflow entering the dust chamber 6 through the air inlet at the top of the dust chamber 6 first passes through the precharging device 4 , and then passes through the filter 7 .
  • the precharging device 4 may be arranged in the dust chamber 6 , and the precharging device 4 is arranged between the air inlet of the dust chamber 6 and the filter element 7 .
  • a pre-charging device 4 is arranged on the lower side of the air inlet of the dust chamber 6, which can charge the dust, and the charged fine dust can be condensed into larger particles, some of which fall directly out of the ash port with the airflow, and some are in the filter element. 7.
  • a loose dust layer is formed on the surface, and at the same time, the dust charge is conducive to capture, which can greatly improve the dust concentration at the entrance of the dust chamber 6.
  • the test data shows that the filtration efficiency can be improved by an order of magnitude, and the filtration resistance is significantly reduced, which is beneficial to improve the filtration speed and prolong the service life of the filter element 7.
  • the pre-charging device 4 is fixed inside the dust chamber 6, and it can be relatively fixed to the dust chamber 6 by means of bolt connection, clamping or the like.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal further includes a plurality of guide plates 5 arranged in the dust chamber 6 , and the plurality of guide plates 5 are opposite to the side of the dust chamber 6 .
  • Wall sloping setting That is, there is an included angle between the deflector 5 and the side wall and bottom wall of the dust chamber 6 .
  • a plurality of guide plates 5 are fixed in the dust chamber 6, and there is a gap between two adjacent guide plates 5 for air flow to pass through.
  • the dust-laden flue gas enters the dust chamber 6 under the guidance of the deflector 5, and the flow direction of the dust-laden flue gas changes after passing through the deflector plate 5, which can not only overcome the direct erosion of the filter element 7 by the dust, but also be easy to wear
  • the shortcoming of the filter element 7 can also make the airflow distribution inside the dust chamber 6 more uniform, avoiding the existence of a dead angle of the air inlet.
  • the deflector 5 is fixed inside the dust chamber 6. Specifically, the deflector 5 can be bolted, clamped or welded in the dust chamber 6, which is not limited herein.
  • the plurality of deflectors 5 can be arranged along a continuous bending line, or the angle between the deflector 5 and the side wall of the dust chamber 6 is not limited, and the plurality of deflectors 5 can be set according to the actual situation. shape, angle of inclination, and location.
  • the flow guiding device 31 disposed in the air inlet duct, the flow guiding device 31 is located upstream of the desulfurization catalyst injection device 30 , and the flow guiding device 31 guides the airflow to descend spirally.
  • the airflow channel in the guide device 31 is helical, so that the intake air flow spirally descends along the guide device 31 .
  • the desulfurization catalyst is sodium hydroxide solution.
  • the plurality of nozzles of the desulfurization catalyst injection device 30 are evenly arranged along the circumferential direction of the air inlet channel, so that the flue gas is fully contacted with the desulfurization catalyst, and the desulfurization efficiency is higher.
  • the axis of the flow guiding device 31 is arranged to coincide with the axis of the air inlet duct, which is beneficial to the diffusion of the air intake.
  • the filter element may be a filter bag.
  • the filter element can also be a filter cartridge, which is not limited here.
  • a denitration catalyst module is arranged in the filter element, that is, the denitration catalyst module is arranged inside the filter element.
  • the flue gas enters the filter element from the outer surface of the filter element for filtration, and the denitration catalyst module entering the filter element reacts with the nitrogen oxides in the flue gas to realize denitration.
  • the denitration catalyst module is arranged inside the filter bag.
  • the denitration catalyst can also be arranged on the filter material of the filter element, which is not limited here.
  • the side wall of the dust chamber 6 is provided with a through hole communicating with the clean air chamber, the air outlet of the filter element is communicated with the through hole on the side wall of the dust chamber 6, and the air outlet of the filter element is in communication with the through hole on the side wall of the dust chamber 6. It is sealed and connected with the side wall of the dust chamber 6 to ensure that the gas in the dust chamber 6 enters the interior of the filter element during normal process, and the gas inside the filter element flows into the clean air chamber.
  • the air inlet duct includes an air inlet duct 2 connected in sequence and an air inlet box 3 connected to the outlet end of the air inlet duct 2, and the dust-laden airflow enters the dust chamber 6 through the air inlet duct 2 and the air inlet box 3 in sequence.
  • the air inlet box 3 may be trumpet-shaped, and the ventilation section of the air inlet box 3 gradually increases along the direction close to the dust chamber 6 . That is, the ventilation cross section of the air outlet end of the air inlet box 3 is larger than the ventilation cross section of the air inlet end. This arrangement can further ensure that the air flow entering the dust chamber 6 is more uniform.
  • Both the flow guide device 31 and the desulfurization catalyst injection device 30 are arranged in the air inlet pipe 2 .
  • the air outlet duct includes an air outlet pipe connected in sequence and an air outlet box connected with the air inlet end of the air outlet pipe, and the air flow is discharged through the air outlet box and the air outlet pipe in sequence.
  • the air outlet box may be trumpet-shaped, and the ventilation section of the air outlet box gradually increases along the direction close to the clean air chamber. This arrangement can further ensure that the air flow is more uniform.
  • the number of clean air chambers is two, and the two clean air chambers are respectively disposed on opposite sides of the dust chamber 6 .
  • the two clean air chambers are the left clean air chamber 10 and the right clean air chamber 13 respectively. Both the left clean air chamber 10 and the right clean air chamber 13 communicate with the air outlet of the filter element 7 in the dust chamber 6 .
  • the number of air outlet ducts is also two, which are the left air outlet duct 12 and the right air outlet duct 15 respectively, and the number of air outlet boxes is also two, which are the left air outlet box 11 and the right air outlet box 14 respectively.
  • the left air outlet box 11 and the left air outlet duct 12 are communicated with the inside of the left clean air chamber 10
  • the right air outlet box 14 and the right air outlet duct 15 are communicated with the inside of the right clean air chamber 13 .
  • the left air outlet box 11 can be connected to the top wall of the left clean air chamber 10
  • the right air outlet air box 14 can be connected to the top wall of the right clean air chamber 13, which is not limited herein.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal may further include a VOC (volatile organic matter) catalyst module, and the VOC catalyst module 19 is arranged in the clean air chamber.
  • the VOC catalyst module 19 is used to remove VOCs from the flue gas.
  • a VOC catalyst module 19 is provided in each clean air chamber.
  • a sponge VOC catalyst module 19 may be employed. The specific surface area of the sponge-like VOC catalyst module 19 is more than 10 times that of the honeycomb-like VOC catalyst module 19, which can reduce space occupation and improve the catalytic efficiency of VOC.
  • the above-mentioned modular integrated system for desulfurization, denitration, and VOC dust removal also includes a metal frame 8 arranged in the dust chamber 6 and a rapping device 9 arranged on the metal frame 8.
  • the rapping device 9 can drive the metal frame 8 and filter Piece 7 shakes.
  • At least one filter element 7 fixedly connected to the metal frame 8 is arranged in the metal frame 8 .
  • the filter element 7 located in the metal frame 8 is fixedly connected with the metal frame 8 .
  • the metal frame 8 is integral with the filter element 7 inside.
  • One side of the metal frame 8 can be fixedly connected to the inner wall of the dust chamber 6 .
  • the number of metal frames 8 is two, and the two metal frames 8 are respectively a left metal frame and a right metal frame, and the left metal frame and the right metal frame are respectively fixed to the left and right side walls of the dust chamber 6 .
  • the air outlet of the filter element 7 in the left metal frame communicates with the left clean air chamber 10
  • the air outlet of the filter element 7 in the right metal frame communicates with the right clean air chamber 13 .
  • the left end of the filter element 7 in the left metal frame is connected to the left side wall of the dust chamber 6, and the right end of the filter element 7 in the left metal frame is closed or covered by filter material.
  • the right end of the filter element 7 in the right metal frame is connected to the right side wall of the dust chamber 6, and the left end of the filter element 7 in the right metal frame is closed or covered by filter material.
  • the denitration catalyst module may be sponge-like.
  • the surface area of the sponge-like denitration catalyst module is more than 10 times that of the honeycomb-shaped denitration catalyst, which can reduce space occupation and improve the catalytic efficiency of nitrogen oxides.
  • the denitration catalyst module can use a low-temperature denitration catalyst.
  • the temperature range of the low-temperature denitration catalyst is 140-220 °C, and the denitration effect is immediately performed at 140 °C.
  • the above-mentioned modular integrated system for desulfurization, denitration and VOC dust removal also includes an ash hopper 16 connected to the ash outlet of the dust chamber 6 and an ash conveying device 17 connected to the bottom of the ash hopper 16 .
  • the top opening of the ash hopper 16 is connected with the ash outlet, so that the dust falls into the ash outlet and then enters the ash hopper 16 and is finally transferred through the ash conveying device 17 .
  • the ash conveying device 17 may be a screw rod device, a pneumatic device, etc., which is not limited herein.
  • the dust chamber 6 and the clean air chamber are integrated into the same box, and the dust chamber 6 and the clean air chamber are separated by a partition.
  • the filter element 7, the pre-charging device 4, the deflector 5 and the rapping device can all be integrated into the box, which is more convenient for modular production and processing.
  • the modular desulfurization, denitration, and VOC dust removal integrated system is formed, which reduces the construction period by more than 2/3 compared with ordinary dust collectors.
  • the underside of the box may be provided with steel columns 18 to support the box.
  • Figure 3 is a schematic diagram of the superimposed connection combination of three modular desulfurization, denitration, and VOC dust removal integrated systems.
  • the modular integrated system for desulfurization, denitration, and VOC dust removal includes a dust chamber 6, an air inlet duct, an air inlet box 3, a flow guide device 31, a desulfurization catalyst injection device 30, a precharge device 4, Air deflector 5, multiple filters 7, VOC catalyst module 19, left clean air chamber 10, left metal frame, left air outlet 11, left air outlet duct 12, left rapping device, right clean air chamber, right metal frame , Right rapping device, right outlet air box 14, right outlet air pipe 15, denitration catalyst module, ash hopper 16 and ash conveying device 17.
  • the pre-charging device 4 and the guide plate 5 are located in the dust chamber 6 , and the pre-charging device 4 is located above the guide plate 5 .
  • the left metal frame and the right metal frame are distributed left and right in the dust chamber 6, a plurality of filter elements 7 are arranged in the left metal frame and the right metal frame, and the left clean air chamber 10 is communicated with the air outlet of the filter element 7 in the left metal frame .
  • the right clean air chamber 13 communicates with the air outlet of the filter element 7 in the right metal frame.
  • a VOC catalyst module 19 is provided in both the left clean air chamber 10 and the right clean air chamber 13 .
  • the dust-laden airflow enters the dust chamber 6 through the air inlet duct and the air inlet box 3 in turn, and the flue gas descends spirally through the reverse flow device in the air inlet duct.
  • the desulfurization catalyst injection device 30 in the air inlet pipe atomizes and sprays the desulfurization agent, and the flue gas reacts with the sprayed desulfurization agent to achieve desulfurization.
  • the flue gas passes through the pre-charging device 4 and the deflector 5 in sequence in the dust chamber 6.
  • part of the fine dust condenses into large particles of dust, and the airflow direction changes after passing through the deflector 5.
  • part of the large particle dust falls into the ash hopper 16 at an accelerated rate under the action of inertia.
  • Part of the air entering the dust chamber 6 enters the left clean air chamber 10 after being filtered by the filter element 7 in the left metal frame, and another part of the air enters the right clean air chamber 13 after being filtered by the filter element 7 in the right metal frame.
  • the dust-laden airflow enters the interior through the surface of the filter element 7, the dust is trapped on the surface, the flue gas reacts with the denitration catalyst loaded on the filter element 7 to achieve denitration, and the clean gas enters the clean air on both sides through the air outlet of the filter element 7 respectively. room.
  • the gas in the clean air chamber on both sides reacts with the VOC catalyst module 19 to remove VOC, specifically, the VOC in the flue gas reacts with O 2 to generate CO 2 and H 2 O, so as to realize the effective removal of VOC in the high-temperature flue gas.
  • the integrated system of modular desulfurization, denitration and VOC dust removal adopts the method of upper air inlet and side air outlet.
  • the left and right sides of the air chamber 6 are discharged from the clean air chamber and the air outlet system.
  • the direction of the intake air flow is the same as the direction of dust falling, which is conducive to the rapid downward settlement of dust.
  • Both the left metal frame and the right metal frame are provided with rapping devices 9 .
  • the dust-laden airflow is filtered and purified by the filter element 7 and then enters the clean air chamber. After the dust is trapped on the surface of the filter bag and reaches a certain pressure value, the rapping device 9 is turned on to vibrate and clean the dust, and the dust deposited on the surface of the filter element 7 is vibrated. After falling into the ash hopper 16, it is output from the dust collector via the ash conveying device 17. After cleaning, the filter element 7 is regenerated and the low-resistance operation is resumed. The gas filtered and purified by the filter element 7 enters the clean air chambers on the left and right sides respectively.
  • a catalyst module is installed in the clean air chamber, which can remove nitrogen oxides in the flue gas, so as to realize the coordinated treatment of dust and nitrogen oxides. .
  • the purified gas is discharged from the dust collector through the air outlet and the air outlet duct, and the air outlet volume on both sides can be controlled as required.
  • the clean air chambers on both sides can be opened to facilitate the installation and maintenance of the filter element 7.

Abstract

一种模块化脱硫脱硝脱VOC除尘一体系统，包括：尘气室(6)，尘气室(6)的顶部开设有至少一个进风口，尘气室(6)的底部开设有至少一个出灰口；进风管道，进风管道的出风端与尘气室(6)的进风口连通；设置于进风管道内的脱硫催化剂喷射装置(30)；多个负载有脱硝催化剂的过滤件(7)，多个过滤件(7)设置于所述尘气室(6)内部，且相邻的两个过滤件(7)之间具有间隙；净气室，净气室设置于尘气室(6)的一侧，尘气室(6)内的气流流经所述过滤件(7)后进入净气室；出风管道，所述出风管道的进风端与所述净气室的出风口连通。该模块化脱硫脱硝脱VOC除尘一体系统可以有效地减少扬尘和实现脱硫脱硝除尘的协同处理，并且可在工厂加工完毕，运输到现场组装，节省工期、降低成本、减少场地占用。

Description

一种模块化脱硫脱硝脱VOC除尘一体系统
本申请要求于2020年11月23日提交中国专利局、申请号为CN202011324982.1、发明名称为“一种模块化脱硫脱硝脱VOC除尘一体系统”的中国专利和申请号为CN202022728775.4、发明名称为“一种模块化脱硫脱硝脱VOC除尘一体系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及烟气除尘技术领域，更具体地说，涉及一种模块化脱硫脱硝脱VOC除尘一体系统。
背景技术
随着世界范围内对于环境保护工作的高度重视，环保和节能减排是当前和今后很长一个时期的重点工作，我国已经将节能环保产业列为战略新兴产业之首。目前，工业企业的环保和污染控制是重中之重。工业企业产生的主要污染物包括粉尘、硫化物、氮氧化物、VOC等，目前对于上述污染物的治理都是通过单一设施系统来完成的，通过除尘器收集和控制粉尘排放量，通过脱硫装置实现硫化物的达标排放，通过脱硝设施实现氮氧化物的排放控制，通过VOC净化装置脱除VOC。
目前，这种单一设施存在的问题：一是各设施体系单独设置、单独运行，设备整体投资非常大，给使用单位造成资金紧张；二是上述各种治理设施串联排布，占地面积广，土地资源浪费大；三是整套设备的运行维护成本高，人力物力财力的投入非常大。因此，目前急需系统化、高效率多污染物协同治理技术和设备。
发明内容
有鉴于此，本申请的目的在于提供一种模块化脱硫脱硝脱VOC除尘一体系统，该模块化脱硫脱硝脱VOC除尘一体系统的结构设计可以有效地减少扬 尘和实现脱硫脱硝除尘的协同处理。
为了达到上述目的，本申请提供如下技术方案：
一种模块化脱硫脱硝脱VOC除尘一体系统，包括：
尘气室，所述尘气室的顶部开设有至少一个进风口，所述尘气室的底部开设有至少一个出灰口；
进风管道，所述进风管道的出风端与所述尘气室的进风口连通；
设置于所述进风管道内的脱硫催化剂喷射装置；
多个负载有脱硝催化剂的过滤件，多个所述过滤件设置于所述尘气室内部，且相邻的两个过滤件之间具有间隙，所述过滤件内部和/或表面设置有脱硝催化剂；
至少一个净气室，所述净气室设置于所述尘气室的一侧，所述尘气室内的气流流经所述过滤件后进入所述净气室；
出风管道，所述出风管道的进风端与所述净气室的出风口连通。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，还包括预荷电装置，所述预荷电装置设置于多个所述过滤件的上游。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，还包括设置于所述尘气室内的多个导流板，所述导流板相对于所述尘气室的侧壁倾斜设置。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，还包括设置于所述进风管道内的导流装置，所述导流装置位于所述脱硫催化剂喷射装置的上游，且所述导流装置引导气流螺旋下降。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，所述过滤件为滤袋，所述滤袋内设置有脱硝催化剂模块。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，所述进风管道包括依次连接的进风管和与所述进风管的出风端连接的进风箱；所述出风管道包括依次连接的出风管和与出风管的进风端连接的出风箱；
所述进风箱和出风箱均为喇叭状，所述进风箱的通风截面沿着靠近所述尘气室的方向逐渐增大，所述出风箱的通风截面沿着靠近所述净气室的方向逐渐增大。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，所述净气室的数量为两个，两个所述净气室分别设置于所述尘气室的相对的两侧。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，还包括VOC催化剂模块，所述VOC催化剂模块设置于所述净气室内。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，还包括与所述尘气室的出灰口连通的灰斗和与所述灰斗的底部连接的输灰装置。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统中，所述尘气室和净气室均集成于同一箱体内，且所述尘气室与所述净气室之间通过隔板隔开。
应用上述提供的模块化脱硫脱硝脱VOC除尘一体系统时，带尘气流经进风管道和尘气室顶部的进风口进入尘气室，进风管道内的脱硫催化剂喷射装置将脱硫剂雾化喷出，具体地可以将脱硫剂雾化成直径0.05-0.8mm的雾滴，烟气进入进风管道内的脱硫剂雾化吸区后与脱硫剂接触反应，完成烟气中的硫化物的脱除。尘气室内的气体进入多个过滤件进行过滤，同时负载在过滤件上的脱硝催化剂与烟气内的氮氧化物反应，完成烟气中氮氧化物的脱除。经多个过滤件脱硝过滤后的气流进入净气室内，最终净气室内的气体能够经出风管道排出。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统还可以包括VOC(易挥发的有机物质)催化剂模块，VOC催化剂模块19设置于净气室内。VOC催化剂模块19用于脱除烟气中的VOC。每个净气室内均设置有VOC催化剂模块19。可以采用海绵状VOC催化剂模块19。海绵状VOC催化剂模块19比表面积是蜂窝状VOC催化剂模块19的10倍以上，可以减少空间占用，提高VOC的催化效率。
上述过滤过程中，带尘气流经尘气室顶部的进风口进入尘气室，如此进风气流方向与粉尘的下落方向一致，粉尘可以下降至尘气室底部的出灰口，更加有利于粉尘的沉降，有效减少了扬尘。另外，烟气在进风管道内与脱硫剂接触反应，实现硫化物的脱除，在尘气室内与负载在过滤件上的脱硝催化剂反应，实现脱硝，最终实现了除尘脱硫脱硝的协同处理，整体投资低，占地面积小，同时大大提高了烟气处理的工作效率。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的模块化脱硫脱硝脱VOC除尘一体系统的结构示意图；
图2为本申请实施例提供的单层模块化脱硫脱硝脱VOC除尘一体系统的主视意图；
图3为本申请实施例提供的三层模块化脱硫脱硝脱VOC除尘一体系统的示意图。
在图1-3中：
1—模块化脱硫脱硝脱VOC除尘一体系统，2—进风管，3—进风箱，4—预荷电装置，5—导流板，6—尘气室，7—过滤件，8—金属框架，9—振打装置，10—左净气室，11—左风箱，12—左出风管，13—右净气室，14—右风箱，15—右出风管道，16—灰斗，17—输灰装置，18—钢柱，19—VOC催化剂模块，20—单层模块化脱硫脱硝脱VOC除尘一体系统，30—脱硫催化剂喷射装置，31—导流装置。
具体实施方式
本申请的目的在于提供一种模块化脱硫脱硝脱VOC除尘一体系统，该模块化脱硫脱硝脱VOC除尘一体系统的结构设计可以有效地减少扬尘和实现脱硫脱硝除尘的协同处理。
下面将结合本申请实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“左”和“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的位置或元件必须具有特定方位、以特定的方位构成和操作，因此不能理解为本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
请参阅图1-图3，本申请提供的模块化脱硫脱硝脱VOC除尘一体系统包括尘气室6、进风管道、脱硫催化剂喷射装置30、多个过滤件7、至少一个净气室和出风管道。
其中，尘气室6的顶部开设有至少一个进风口。即尘气室6的顶部可以开放形成一个进风口，该进风口的通风截面覆盖尘气室6的整个顶部。或者，尘气室6的顶部可以开设有多个进风口。带尘气流经尘气室6顶部的进风口进入尘气室6。尘气室6的底部开设有至少一个出灰口，灰尘经尘气室6底部的出灰口排出。
进风管道的出风端与尘气室6的进风口连通，进风管道内的带尘气流经进风管道的出风端进入尘气室6内。
脱硫催化剂喷射装置30设置于进风管道内，脱硫催化剂喷射装置30用于将脱硫催化剂雾化喷出。
多个过滤件7设置于尘气室6内部，且相邻的两个过滤件7之间具有间隙。即多个过滤件7均固定在尘气室6内，过滤件7的至少一端与尘气室6的侧壁连接。过滤件7上负载有脱硝催化剂，具体地，过滤件7内部和/或表面设置有脱硝催化剂。
优选地，尘气室6为方体状，多个过滤件7的长度方向相互平行设置。过滤件7的轴向可以沿水平设置或者过滤件7的轴向与水平面之间的夹角为锐角，在此不作限定。
净气室的数量为一个或多个。净气室设置于尘气室6的一侧，尘气室6内的气流流经过滤件7后进入净气室。
出风管道的进风端与净气室的出风口连通，即过滤后进入净气室内的气体 能够经出风管道排出。
应用上述提供的模块化脱硫脱硝脱VOC除尘一体系统时，带尘气流经进风管道和尘气室6顶部的进风口进入尘气室6，进风管道内的脱硫催化剂喷射装置30将脱硫剂雾化喷出，具体地可以将脱硫剂雾化成直径0.05-0.8mm的雾滴，烟气进入进风管道内的脱硫剂雾化吸区后与脱硫剂接触反应，完成烟气中的硫化物的脱除。尘气室6内的气体进入多个过滤件7进行过滤，同时负载在过滤件7上的脱硝催化剂与烟气内的氮氧化物反应，完成烟气中氮氧化物的脱除。经多个过滤件7脱硝过滤后的气流进入净气室内，最终净气室内的气体能够经出风管道排出。上述过滤过程中，带尘气流经尘气室6顶部的进风口进入尘气室6，如此进风气流方向与粉尘的下落方向一致，粉尘可以下降至尘气室6底部的出灰口，更加有利于粉尘的沉降，有效减少了扬尘。另外，烟气在进风管道内与脱硫剂接触反应，实现硫化物的脱除，在尘气室6内与负载在过滤件7上的脱硝催化剂反应，实现脱硝，最终实现了除尘脱硫脱硝的协同处理，整体投资低，占地面积小，同时大大提高了烟气处理的工作效率。
尘气室6、净气室及其内部的装置共同形成模块化脱硫脱硝脱VOC除尘一体系统1。
在一具体实施例中，上述模块化脱硫脱硝脱VOC除尘一体系统还可以包括预荷电装置4，预荷电装置4设置于过滤件7的上游。即预荷电装置4位于多个过滤件7的上游，经尘气室6顶部的进风口进入尘气室6的带尘气流先经过预荷电装置4后，再经过过滤件7。具体地，预荷电装置4可以设置于尘气室6内，预荷电装置4设置于尘气室6的进风口与过滤件7之间。在尘气室6的进风口下侧设置预荷电装置4，可以使粉尘荷电，荷电后的细微粉尘可以凝聚成较大粒子，一部分随气流直接掉落出灰口，一部分在过滤件7表面形成结构疏松的粉尘层，同时粉尘荷电有利于捕集，可以大大提高尘气室6入口处的粉尘浓度。测试数据显示，设置预荷电装置4的模块化脱硫脱硝脱VOC除尘一体系统，过滤效率可提高一个数量级，而过滤阻力明显降低，有利于提高过滤速度，延长过滤件7的使用寿命。
预荷电装置4固定在尘气室6内部，其可以通过螺栓连接、卡接等方式与 尘气室6相对固定。
在另一具体实施例中，上述模块化脱硫脱硝脱VOC除尘一体系统还包括设置于尘气室6内的多个导流板5，并且多个导流板5相对于尘气室6的侧壁倾斜设置。即导流板5与尘气室6的侧壁和底壁之间均具有夹角。多个导流板5固定在尘气室6内，相邻的两个导流板5之间具有供气流通过的间隙。如此设置，带尘烟气在导流板5的引导下进入尘气室6，且带尘烟气经导流板5后流动方向发生改变，如此不但可以克服粉尘直接冲刷过滤件7且容易磨损过滤件7的缺点，还可以使尘气室6内部气流分布更加均匀，避免了进风死角的存在。
导流板5固定在尘气室6内部，具体地，导流板5可以螺栓连接、卡接或者焊接在尘气室6内，在此不作限定。
优选地，多个导流板5可以沿着连续弯折线排布，或者导流板5与尘气室6侧壁之间的夹角不作限定，可以根据实际情况设置多个导流板5的形状、倾斜角度以及位置。
进一步地，还包括设置于进风管道内的导流装置31，导流装置31位于脱硫催化剂喷射装置30的上游，且导流装置31引导气流螺旋下降。导流装置31内的气流通道为螺旋状，以使进风气流沿着导流装置31螺旋下降。优选地，脱硫催化剂为氢氧化钠溶液。
脱硫催化剂喷射装置30的多个喷头沿着进风通道的周向均匀设置，以使烟气全面的接触脱硫催化剂，脱硫效率更高。导流装置31的轴线与进风管道的轴线重合设置，有利于进风的扩散。
另一实施例中，过滤件可以为滤袋。当然，过滤件还可以为滤筒，在此不作限定。
进一步地，过滤件内设置有脱硝催化剂模块，即脱硝催化剂模块设置在过滤件内部。烟气从过滤件外表面进入过滤件内部进行过滤，进入过滤件内部的脱硝催化剂模块与烟气内氮氧化物反应实现脱硝。
当过滤件为滤袋时，脱硝催化剂模块设置于滤袋内部。
当然，脱硝催化剂还可以设置在过滤件的滤料上，在此不作限定。
该处需要说明的是，尘气室6的侧壁上设置有与净气室连通的通孔，过滤件的出风口与尘气室6侧壁上的通孔连通，且过滤件的出风口与尘气室6侧壁密封连接，以保证正常过程时，尘气室6内的气体进入过滤件的内部，过滤件内部的气体流动至净气室内。
优选地，进风管道包括依次连接的进风管2和与进风管2的出风端连接的进风箱3，带尘气流依次经进风管2和进风箱3后进入尘气室6。进风箱3可以为喇叭状，并且进风箱3的通风截面沿着靠近尘气室6的方向逐渐增大。即进风箱3的出风端的通风截面大于进风端的通风截面。如此设置，能够进一步保证进入尘气室6内的气流更加均匀。导流装置31和脱硫催化剂喷射装置30均设置在进风管2内。
出风管道包括依次连接的出风管和与出风管的进风端连接的出风箱，气流依次经出风箱和出风管后排出。出风箱可以为喇叭状，并且出风箱的通风截面沿着靠近净气室的方向逐渐增大。如此设置，能够进一步保证出风气流更加均匀。
优选地，净气室的数量为两个，两个净气室分别设置于尘气室6的相对的两侧。两个净气室分别为左净气室10和右净气室13。左净气室10和右净气室13均与尘气室6内的过滤件7的出风口连通。出风管道的数量也为两个且分别为左出风管12道和右出风管15，出风箱的数量也为两个且分别为左出风箱11和右出风箱14。左出风箱11和左出风管12道与左净气室10内部连通，右出风箱14和右出风管15与右净气室13内部连通。
左出风箱11可以与左净气室10顶壁连接，右出风箱14可以与右净气室13顶壁连接，在此不作限定。
优选地，上述模块化脱硫脱硝脱VOC除尘一体系统还可以包括VOC(易挥发的有机物质)催化剂模块，VOC催化剂模块19设置于净气室内。VOC催化剂模块19用于脱除烟气中的VOC。每个净气室内均设置有VOC催化剂模块19。可以采用海绵状VOC催化剂模块19。海绵状VOC催化剂模块19比表面积是蜂窝状VOC催化剂模块19的10倍以上，可以减少空间占用，提高VOC的催化效率。
进一步地，上述模块化脱硫脱硝脱VOC除尘一体系统还包括设置于尘气室6内的金属框架8和设置于金属框架8上的振打装置9，振打装置9能够带动金属框架8和过滤件7震动。金属框架8内设置有至少一个与其固定连接的过滤件7。位于金属框架8内的过滤件7与金属框架8固定连接。金属框架8与其内部的过滤件7形成一个整体。金属框架8的一侧可以与尘气室6的内壁固定连接。振打装置9开启时，过滤件7表面的灰尘受到震动后表面堆积的灰尘脱落，实现清灰和再生。
具体地，金属框架8的数量为两个，且两个金属框架8分别为左金属框架和右金属框架，左金属框架和右金属框架分别与尘气室6的左侧壁和右侧壁固定连接，左金属框架内的过滤件7的出风口与左净气室10连通，右金属框架内的过滤件7的出风口与右净气室13连通。左金属框架内的过滤件7的左端与尘气室6的左侧壁连接，左金属框架内的过滤件7的右端封闭或被滤料覆盖。右金属框架内的过滤件7的右端与尘气室6的右侧壁连接，右金属框架内的过滤件7的左端封闭或被滤料覆盖。
在本实施例中，脱硝催化剂模块可以为海绵状。海绵状的脱硝催化剂模块的表面积是蜂窝状脱硝催化剂的表面积的10倍以上，可以减少空间占用，提高氮氧化物的催化效率。脱硝催化剂模块可以采用低温脱硝催化剂，低温脱硝催化剂温度区间为140-220℃，在140℃即刻发挥脱硝作用。
为了及时收集落至出灰口的粉尘，上述模块化脱硫脱硝脱VOC除尘一体系统还包括与尘气室6的出灰口连通的灰斗16和与灰斗16的底部连接的输灰装置17。灰斗16的顶部开口与出灰口连接，如此，粉尘落至出灰口内进而进入灰斗16，最终通过输灰装置17转移。
上述实施例中，输灰装置17可以为螺旋杆装置、气动装置等，在此不作限定。
在一优选实施例中，尘气室6和净气室均集成于同一箱体内，且尘气室6与净气室之间通过隔板隔开。如此，过滤件7、预荷电装置4、导流板5和振打装置可以均集成在箱体内，更便于模块化制作加工，所有零部件基本在工厂加 工完毕，运输到现场组装即可制成该模块化脱硫脱硝脱VOC除尘一体系统，比普通除尘器减少施工周期2/3以上。箱体的下侧可以设置钢柱18以支撑该箱体。
具体应用时可以根据工况条件和过滤面积单层模块化脱硫脱硝脱VOC除尘一体系统20使用，也可以多个模块化脱硫脱硝脱VOC除尘一体系统叠加连接组合在一起使用，节省占地空间、提高生产效率。图3中即为三个模块化脱硫脱硝脱VOC除尘一体系统叠加连接组合的示意图。
如下提供一种更加具体的实施例，模块化脱硫脱硝脱VOC除尘一体系统包括尘气室6、进风管道、进风箱3、导流装置31、脱硫催化剂喷射装置30、预荷电装置4、导流板5、多个过滤件7、VOC催化剂模块19、左净气室10、左金属框架、左出风箱11、左出风管12、左振打装置、右净气室、右金属框架、右振打装置、右出风箱14、右出风管15、脱硝催化剂模块、灰斗16和输灰装置17。其中，预荷电装置4和导流板5位于尘气室6内，且预荷电装置4位于导流板5上方。左金属框架和右金属框架在尘气室6内左右分布，左金属框架和右金属框架内均设置有多个过滤件7，左净气室10与左金属框架内的过滤件7出风口连通。右净气室13与右金属框架内的过滤件7出风口连通。左净气室10和右净气室13内均设置有VOC催化剂模块19。
上述实施例中的模块化脱硫脱硝脱VOC除尘一体系统进行烟气处理时，带尘气流依次经进风管道和进风箱3进入尘气室6，烟气经进风管道内的倒流装置螺旋下降，且进风管道内的脱硫催化剂喷射装置30将脱硫剂雾化喷出，烟气与喷出的脱硫剂反应实现脱硫。烟气在尘气室6内依次经预荷电装置4、导流板5，在预荷电装置4的作用下，部分微细粉尘凝结成大颗粒粉尘，经过导流板5后气流方向发生改变，部分大颗粒粉尘在惯性作用下，加速坠入灰斗16中。进入尘气室6的部分气流经左金属框架内的过滤件7过滤后进入左净气室10，另一部分气流经右金属框架内的过滤件7过滤后进入右净气室13。即含尘气流经由过滤件7表面进入内部，粉尘被截留在表面，烟气与负载在过滤件7上的脱硝催化剂反应实现脱硝，干净的气体经由过滤件7出风口分别进入两侧的净气室。两侧的净气室内的气体与VOC催化剂模块19反应脱除VOC，具体地烟气中的VOC与O 2发生反应，生成CO 2和H 2O，实现高温烟气中的VOC 的有效脱除。由此可知，该模块化脱硫脱硝脱VOC除尘一体系统采用上进风、侧出风的方式，含尘气流从尘气室6的上部进入到尘气室6，经过过滤件7过滤净化后经由尘气室6的左右两侧净气室和出风系统排出。进风气流走向和灰尘掉落方向一致，有利于灰尘快速向下沉降。
左金属框架和右金属框架上均设置振打装置9。含尘气流经过过滤件7过滤净化后进入到净气室，粉尘被截留在滤袋表面达到一定压力值后，开启振打装置9进行振打清灰，沉积在过滤件7表面的粉尘受到震动后掉落灰斗16中，经由输灰装置17从除尘器中输出。清灰后过滤件7得到再生，恢复低阻运行。经过过滤件7过滤净化后的气体分别进入左右两侧的净气室，净气室内设置有催化剂模块，可以对烟气中的氮氧化物进行脱除，从而实现粉尘和氮氧化物的协同治理。净化后的气体经由出风口和出风管道排出除尘器，两侧的出风量可以根据需要进行控制。安装维护时，两侧的净气室可以打开，便于过滤件7安装检修。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本申请。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，包括：
    尘气室(6)，所述尘气室(6)的顶部开设有至少一个进风口，所述尘气室(6)的底部开设有至少一个出灰口；
    进风管道，所述进风管道的出风端与所述尘气室(6)的进风口连通；
    设置于所述进风管道内的脱硫催化剂喷射装置(30)；
    多个负载有脱硝催化剂的过滤件(7)，多个所述过滤件(7)设置于所述尘气室(6)内部，且相邻的两个过滤件(7)之间具有间隙，所述过滤件内部和/或表面设置有脱硝催化剂；
    至少一个净气室，所述净气室设置于所述尘气室(6)的一侧，所述尘气室(6)内的气流流经所述过滤件(7)后进入所述净气室；
    出风管道，所述出风管道的进风端与所述净气室的出风口连通。
  2. 根据权利要求1所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，还包括预荷电装置(4)，所述预荷电装置(4)设置于多个所述过滤件(7)的上游。
  3. 根据权利要求1所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，还包括设置于所述尘气室(6)内的多个导流板(5)，所述导流板(5)相对于所述尘气室(6)的侧壁倾斜设置。
  4. 根据权利要求1所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，还包括设置于所述进风管道内的导流装置(31)，所述导流装置(31)位于所述脱硫催化剂喷射装置(30)的上游，且所述导流装置(31)引导气流螺旋下降。
  5. 根据权利要求1所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，所述过滤件为滤袋，所述滤袋内设置有脱硝催化剂模块。
  6. 根据权利要求1所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，所述进风管道包括依次连接的进风管(2)和与所述进风管(2)的出风端连接的进风箱(3)；所述出风管道包括依次连接的出风管和与出风管的进风 端连接的出风箱；
    所述进风箱(3)和出风箱均为喇叭状，所述进风箱(3)的通风截面沿着靠近所述尘气室(6)的方向逐渐增大，所述出风箱的通风截面沿着靠近所述净气室的方向逐渐增大。
  7. 根据权利要求1所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，所述净气室的数量为两个，两个所述净气室分别设置于所述尘气室(6)的相对的两侧。
  8. 根据权利要求1所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，还包括VOC催化剂模块(19)，所述VOC催化剂模块(19)设置于所述净气室内。
  9. 根据权利要求1所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，还包括与所述尘气室(6)的出灰口连通的灰斗(16)和与所述灰斗(16)的底部连接的输灰装置(17)。
  10. 根据权利要求1-9任一项所述的模块化脱硫脱硝脱VOC除尘一体系统，其特征在于，所述尘气室(6)和净气室均集成于同一箱体内，且所述尘气室(6)与所述净气室之间通过隔板隔开。
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