CN117258532A - Energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method - Google Patents

Energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method Download PDF

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Publication number
CN117258532A
CN117258532A CN202311160422.0A CN202311160422A CN117258532A CN 117258532 A CN117258532 A CN 117258532A CN 202311160422 A CN202311160422 A CN 202311160422A CN 117258532 A CN117258532 A CN 117258532A
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China
Prior art keywords
filter tube
denitration
flue gas
dust
pipe
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CN202311160422.0A
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Chinese (zh)
Inventor
孙正庭
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Anhui Zishuo Environmental Engineering Technology Co ltd
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Anhui Zishuo Environmental Engineering Technology Co ltd
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Priority to CN202311160422.0A priority Critical patent/CN117258532A/en
Publication of CN117258532A publication Critical patent/CN117258532A/en
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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
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
    • B01D46/60—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/88—Replacing filter elements
    • 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
    • B01D53/343—Heat recovery
    • 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
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention relates to the technical field of environmental protection treatment, in particular to an energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device which comprises a denitration tower, an air inlet tube and an air outlet tube, wherein the air inlet tube and the air outlet tube are respectively arranged on two sides of the denitration tower, and a denitration component is arranged in the denitration tower. According to the invention, the denitration component is arranged in the denitration tower, and consists of four filter sleeves and filter tubes, and the two mutually staggered blowing frames arranged in the filter sleeves are utilized to improve the mixing efficiency of dust-containing flue gas and ammonia gas, so that the denitration efficiency of the dust-containing flue gas is obviously improved; meanwhile, after the heat exchange tube is utilized to exchange heat of the sent air, the heat is sent into the filter tube to be used as denitration catalytic reaction, so that energy consumption of dust-containing flue gas in the denitration treatment process is effectively reduced.

Description

Energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method
Technical Field
The invention relates to the technical field of environmental protection treatment, in particular to an energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method.
Background
For the treatment of high-temperature industrial waste gas or flue gas containing acid gases such as SOX, NOX and dust, the technical process in the market is various, but the technology mainly exists in independent system processes for respectively treating various atmospheric pollutant components, such as dry desulfurization, semi-dry desulfurization, wet desulfurization and the like for treating the acid gases such as SOX, denitration technologies such as SCR/SNCR for treating NOX and the like, cyclone dust removal, water film dust removal, electrostatic dust removal, cloth bag dust removal and the like for treating dust.
The industrial exhaust flue gas is accompanied by dust emission problems besides desulfurization and denitrification problems. For flue gas containing dust, SOx and NOx which exceed 160-280 ℃, the method commonly adopted in the engineering at present is to remove dust and desulfurize first and then to denitrate. Or the flue gas is denitrated after the temperature is increased, and then the temperature is reduced, desulfurized and dedusted. The common characteristics of the engineering are as follows: complex process, high investment cost and high running cost.
Therefore, we propose an energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method, which are used for reducing energy consumption in the denitration process and improving denitration efficiency.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides an energy-saving flue gas dust sulphur nitre pottery catalytic filter tube integrated device, includes denitration tower, intake pipe and outlet duct, the both sides of denitration tower are provided with intake pipe and outlet duct respectively, and the outlet duct is located the top of intake pipe, the inside of denitration tower is provided with denitration subassembly, denitration subassembly includes filter tube sleeve and filter tube, the filter tube sleeve sets up in the below of denitration tower inside, and the inside of filter tube sleeve is provided with the filter tube, the inside absorption of filter tube is provided with denitration catalyst, the top of filter tube extends to the top of filter tube sleeve, the top of filter tube sleeve still is provided with the apron, and the inside cover of apron is established on the surface of filter tube, the filter tube sleeve is located the inside of denitration tower and is provided with four, and four filter tube sleeves are equiangular distribution setting about the central axis of denitration tower, the inside top of denitration tower is provided with the gas feed pipe, and the inside of smoke and dust tube communicates with the inside of intake pipe, the below of denitration tower inside is provided with the reductant conveyer pipe, the inside of filter tube, one side of reductant conveyer pipe is provided with the conveyer pipe and the inside of four conveyer tubes that the inside and the inside of denitration tower and the inside of ventilation tube are all connected to the inside the filter tube, the inside of denitration tower and the inside the conveyer pipe that runs through;
the bottom of denitration tower is provided with the heat exchange tube, and the one end of heat exchange tube extends to four inside below of filter tube, and wherein the other end of heat exchange tube is provided with heat transfer equipment, and the inside of heat transfer equipment communicates with the one end of outlet duct.
Preferably, the top of denitration tower still is provided with fixed lid, the bottom of fixed lid is provided with the go-between, and the bottom of fixed lid passes through bolt group with the top of go-between and be connected, the top of denitration tower global is provided with three first servo electric jar, and the drive end of three first servo electric jar all is connected with the global of go-between.
Preferably, two air blowing frames are arranged in the filter tube sleeve, the two air blowing frames are arranged in a staggered mode, air blowing ports are formed in the inner walls of the two air blowing frames, and the two air blowing frames are respectively communicated with the inside of the smoke dust air supply tube and the inside of the reducing agent conveying tube.
Preferably, the inside of denitration tower is provided with the fixed plate, and the fixed plate is located denitration subassembly's top, the through-hole with filter tube matched with has been seted up to the inside of fixed plate, and the top of filter tube extends to the top of through-hole, the top rotation of fixed plate is provided with the baffle, and the top of baffle is provided with the dwang.
Preferably, the inside of denitration tower still is provided with the mounting panel, and the top of dwang extends to the top of mounting panel, the top of mounting panel is provided with the link, and the bottom of link is connected with the top of filter tube.
Preferably, the inside of link is provided with the soot blowing subassembly, the soot blowing subassembly includes soot blowing pole and soot blowing head, the top of fixed lid is provided with the air duct, and the bottom of air duct extends to the inside of fixed lid, the bottom of fixed lid is provided with the soot blowing pole, and the inside of soot blowing pole communicates with the bottom of air duct through the spring pipe, the bottom of soot blowing pole is provided with the soot blowing head, and the bottom and the global soot blowing mouth that all is provided with of soot blowing head.
Preferably, a second servo electric cylinder is arranged at the top of the fixed cover, and the driving end of the second servo electric cylinder is connected with the top end of the soot blowing rod through a thread group.
Preferably, one side of the inner wall of the denitration tower is provided with a gas filtering frame, the inside of the gas filtering frame is communicated with the inside of the gas outlet pipe, filter cloth is arranged between one side of the gas filtering frame and one side of the gas outlet pipe, the bottom of the gas filtering frame is provided with an ash discharging pipe, and the top of the gas filtering frame is provided with two high-pressure nozzles.
Preferably, the treatment method of the energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device specifically comprises the following steps:
step one, introducing dust-containing flue gas into a desulfurization tower for desulfurization treatment, heating the flue gas sent out of the desulfurization tower to 230-250 ℃, and then sending the flue gas into a denitration tower;
step two, introducing dust-containing flue gas into a flue gas supply pipe through an air inlet pipe, then allowing the dust-containing flue gas to enter the interiors of four filter pipe sleeves through the flue gas supply pipe, introducing ammonia gas into the interior of a reducing agent conveying pipe through a material guide pipe while allowing the dust-containing flue gas to enter the interiors of the filter pipe sleeves, controlling the temperature of the interiors of the filter pipe sleeves within 200-450 ℃, fully mixing the ammonia gas and the dust-containing flue gas in the interiors of the filter pipe sleeves, stably adsorbing NH3 on the surfaces of denitration catalysts, and selectively reducing NOx into nitrogen and water;
step three, after denitration treatment is carried out on dust-containing flue gas, the treated air enters the air filtering frame, dust in the air is filtered by utilizing filter cloth, clean air is sent out from the inside of the denitration tower, the sent clean air is subjected to heat exchange by utilizing heat exchange equipment, the clean air is cooled and then discharged, and heat absorbed by the clean air is sent into the inside of the filter pipe through a heat exchange pipe to maintain the catalytic temperature of a denitration catalyst;
when the pressure difference between the inside and the outside of the filter tube reaches the maximum value, air is introduced into the soot blowing rod in a pulse mode through the air duct and the spring tube, then the air is cleaned in a pulse mode from the bottom and the peripheral surface of the soot blowing head to the inner wall of the filter tube, and meanwhile, the driving end of the second servo electric cylinder pushes the soot blowing rod downwards to enable the soot blowing head at the bottom end of the soot blowing rod to extend into the filter tube, and the surface of a denitration promotion catalyst below the filter tube is subjected to soot cleaning;
and fifthly, when the filter tube in the denitration assembly is maintained and replaced, the driving end of the first servo electric cylinder drives the connecting ring to move upwards, then the fixed cover is separated from the connecting ring, and the connecting frame is used for driving the filter tube to be pulled out from the filter tube sleeve.
The invention provides an energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method. Compared with the prior art, the method has the following beneficial effects:
the denitration component is arranged in the denitration tower, and consists of four filter sleeves and filter tubes, and two mutually staggered blowing frames arranged in the filter sleeves are utilized to improve the mixing efficiency of dust-containing flue gas and ammonia gas, so that the denitration efficiency of the dust-containing flue gas is obviously improved; meanwhile, after the heat exchange tube is utilized to exchange heat of the sent air, the heat is sent into the filter tube to be used as denitration catalytic reaction, so that energy consumption of dust-containing flue gas in the denitration treatment process is effectively reduced.
Through setting up the soot blowing subassembly in the inside of link, utilize the second servo electric jar to drive the soot blowing subassembly and carry out the up-and-down motion in the inside of filter tube simultaneously, carry out real-time supervision to the pressure differential of filter tube inside and outside, set for maximum to the pressure differential of filter tube inside and outside, when the pressure differential value of filter tube inside and outside reaches maximum, adopt pulse mode to let in the air to the inside of soot blowing pole through air duct and spring pipe, then the air carries out pulse clearance from the bottom of soot blowing head and global to the inner wall of filter tube, avoid the surface of the inside denitration catalyst of filter tube to be wrapped by the smoke and dust, show the denitration catalytic effect of denitration catalyst to ammonia and dust-laden flue gas in the improvement filter tube.
Through the independent setting of filter tube inside the filter tube cover, when maintaining the change to the filter tube in the denitration subassembly, utilize the link to drive the filter tube and take out from the inside of filter tube cover, realize the independent management to the filter tube, avoid the filter tube to need shut down the condition of maintaining when breaking down to appear, show the denitration efficiency to dust-laden flue gas that has improved.
Drawings
FIG. 1 is a schematic diagram of an integrated device for catalyzing a filter tube with energy-saving flue gas dust sulfur nitrate ceramics according to an embodiment of the invention;
FIG. 2 is a schematic view showing the internal structure of a denitration tower according to an embodiment of the present invention;
FIG. 3 is a schematic view of a baffle, a connecting frame and an air filtering frame according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a sootblower rod and sootblower head configuration in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a blowing frame structure according to an embodiment of the present invention;
FIG. 6 is a top view of a denitration assembly structure according to an embodiment of the present invention;
FIG. 7 is a schematic view of a filter tube housing and a filter tube structure according to an embodiment of the present invention;
FIG. 8 is a schematic view of a filter tube housing and rotating assembly according to an embodiment of the present invention;
fig. 9 is a schematic view of a rotating assembly structure according to an embodiment of the invention.
In the figure, 10, a denitration tower; 20. an air inlet pipe; 30. an air outlet pipe; 40. a fixed cover; 50. a connecting ring; 60. a first servo cylinder; 70. a heat exchange tube; 11. a filter tube sleeve; 12. a filter tube; 13. a cover plate; 14. a smoke dust air supply pipe; 15. a reducing agent delivery pipe; 16. a material guiding pipe; 17. an air blowing frame; 21. a fixing plate; 22. a baffle; 23. a rotating lever; 24. a mounting plate; 25. a connecting frame; 31. a soot blowing rod; 32. a soot blowing head; 33. an air duct; 34. a spring tube; 35. a second servo cylinder; 41. an air filtering frame; 42. an ash discharge pipe; 43. a high pressure nozzle; 51. a rotating frame; 52. a fixing frame; 53. a sloping plate; 54. a groove; 55. a mounting groove; 56. a ball; 57. a rotating groove; 58. and (5) cleaning the brush.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 7, an energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device comprises a denitration tower 10, an air inlet tube 20 and an air outlet tube 30, wherein the air inlet tube 20 and the air outlet tube 30 are respectively arranged on two sides of the denitration tower 10, and the air outlet tube 30 is positioned above the air inlet tube 20; the dust-containing flue gas is sent into the denitration tower 10 through the air inlet pipe 20, and after the denitration treatment is carried out on the dust-containing flue gas in the denitration tower 10, clean air is sent out through the air outlet pipe 30, so that the efficient denitration treatment on the dust-containing flue gas is realized.
The top of denitration tower 10 still is provided with fixed lid 40, the bottom of fixed lid 40 is provided with go-between 50, and the bottom of fixed lid 40 is connected through the bolt group with the top of go-between 50, the top of denitration tower 10 global is provided with three first servo electric jar 60, and the drive end of three first servo electric jar 60 all is connected with the global of go-between 50, wherein the global of go-between 50 is provided with three connecting block, and the bottom of three connecting block is connected with the drive end top of three first servo electric jar 60 respectively, the global setting that is equiangular distribution about the central axis of denitration tower 10 of three first servo electric jar 60 is located the global of denitration tower 10, be provided with sealing washer between the bottom of go-between 50 and the top of denitration tower 10, utilize the drive end of three first servo electric jar 60 to drive go-between 50 at the top of denitration tower 10 upwards, open the top of denitration tower 10 back, be convenient for maintain the change to the inside denitration structure part of denitration tower 10.
The inside of the denitration tower 10 is provided with a denitration component, the denitration component comprises a filter tube sleeve 11 and filter tubes 12, the filter tube sleeve 11 is arranged below the inside of the denitration tower 10, the inside of the filter tube sleeve 11 is provided with the filter tubes 12, the filter tubes 12 adopt ceramic fiber filter tubes, denitration catalysts are adsorbed and arranged in the inside of the filter tubes 12, the top ends of the filter tubes 12 extend to the top of the filter tube sleeve 11, the top of the filter tube sleeve 11 is also provided with a cover plate 13, the inside of the cover plate 13 is sleeved on the surface of the filter tubes 12, the filter tube sleeves 11 are arranged in the denitration tower 10 in four, the four filter tube sleeves 11 are distributed at equal angles with respect to the central axis of the denitration tower 10, a smoke gas supply tube 14 is arranged above the inside of the denitration tower 10, the inside of the smoke gas supply tube 14 is communicated with the inside of the gas supply tube 20, one side of the reducing agent supply tube 15 is provided with a guide tube 16, one end of the guide tube 16 penetrates through the denitration tower 10 and extends to the outside of the denitration tower 10, and the four reducing agent supply tubes 14 are communicated with the inside of the four filter tubes 11; when the dust-laden flue gas is subjected to denitration treatment, the dust-laden flue gas is introduced into the flue gas supply pipe 14 through the air inlet pipe 20, then the dust-laden flue gas enters the interiors of the four filter pipe sleeves 11 through the flue gas supply pipe 14, ammonia is introduced into the interior of the reducing agent conveying pipe 15 through the guide pipe 16 while the dust-laden flue gas enters the interiors of the filter pipe sleeves 11, the temperature of the interiors of the filter pipe sleeves 11 is controlled within 200-450 ℃, the ammonia and the dust-laden flue gas are fully mixed in the interiors of the filter pipe sleeves 11, NH3 is stably adsorbed on the surface of a denitration catalyst, NOx is selectively reduced into nitrogen and water, the nitrogen and the water mainly react to be 4NH3 (ad) +4NO (gas) +O2→4N2+6H2O,4NH3 (ad) +4N2+6H2O, NO (ad) +O2→O2,4NH3 (ad) +2NO 2+6H2O, and the water is discharged from the bottom of the denitration tower 10, and finally the nitrogen is discharged from the top of the air outlet pipe 12 to the upper part of the denitration tower.
The inside of filter tube cover 11 is provided with two frames 17 of blowing, and the inside of two frames 17 of blowing staggers each other and sets up, and the inner wall of two frames 17 of blowing all is provided with the gas port of blowing, and two frames 17 of blowing communicate with the inside of smoke and dust air pipe 14, reductant conveyer pipe 15 respectively, blow into the inside of filter tube cover 11 to dust-laden flue gas and ammonia through two frames 17 of blowing that stagger each other set up, improve dust-laden flue gas and ammonia's mixing efficiency to show the denitration efficiency that improves dust-laden flue gas.
The inside of the denitration tower 10 is provided with a fixed plate 21, the fixed plate 21 is positioned above the denitration component, a through hole matched with the filter tube 12 is formed in the inside of the fixed plate 21, the top end of the filter tube 12 extends to the top of the through hole, the top of the fixed plate 21 is rotatably provided with baffle plates 22, the top of the baffle plates 22 is provided with rotating rods 23, the baffle plates 22 are positioned at the top of the fixed plate 21, four baffle plates are arranged at the top of the fixed plate 21, a mounting plate 24 is further arranged in the inside of the denitration tower 10, the top end of the rotating rod 23 extends to the top of the mounting plate 24, the top of the mounting plate 24 is provided with a connecting frame 25, and the bottom of the connecting frame 25 is connected with the top end of the filter tube 12;
the inside of the connecting frame 25 is provided with a soot blowing component, the soot blowing component comprises a soot blowing rod 31 and a soot blowing head 32, the top of the fixed cover 40 is provided with an air duct 33, the bottom end of the air duct 33 extends to the inside of the fixed cover 40, the bottom of the fixed cover 40 is provided with the soot blowing rod 31, the inside of the soot blowing rod 31 is communicated with the bottom end of the air duct 33 through a spring tube 34, the bottom end of the soot blowing rod 31 is provided with the soot blowing head 32, and the bottom and the peripheral surface of the soot blowing head 32 are both provided with soot blowing openings;
the top of the fixed cover 40 is provided with a second servo electric cylinder 35, and the driving end of the second servo electric cylinder 35 is connected with the top end of the soot blowing rod 31 through a thread group;
the pressure difference between the inside and the outside of the filter tube 12 is monitored in real time, the maximum value is set for the pressure difference between the inside and the outside of the filter tube 12, when the pressure difference between the inside and the outside of the filter tube 12 reaches the maximum value, air is introduced into the interior of the soot blowing rod 31 in a pulse mode through the air guide tube 33 and the spring tube 34, then the air is cleaned in a pulse mode from the bottom and the peripheral surface of the soot blowing head 32 to the inner wall of the filter tube 12, and meanwhile, the driving end of the second servo electric cylinder 35 pushes the soot blowing rod 31 downwards, so that the soot blowing head 32 at the bottom end of the soot blowing rod 31 stretches into the interior of the filter tube 12, an effective soot cleaning effect is achieved below the filter tube 12, the surface of a denitration catalyst in the filter tube 12 is prevented from being coated by soot, and the denitration catalytic effect of the denitration catalyst in the filter tube 12 on ammonia and dust-containing flue gas is remarkably improved.
When maintaining the filter tube 12 in the denitration assembly and changing, through the upward movement of control go-between 50, follow fixed lid 40 and go-between 50 separate, utilize link 25 to drive filter tube 12 and take out from the inside of filter tube cover 11, realize the independent management to filter tube 12, avoid filter tube 12 to need the condition of shutting down the maintenance to appear when breaking down, show the denitration efficiency to dust-laden flue gas.
The inside of the gas filtering frame 41 is communicated with the inside of the gas outlet pipe 30, filter cloth is arranged between one side of the gas filtering frame 41 and one side of the gas outlet pipe 30, an ash discharging pipe 42 is arranged at the bottom of the gas filtering frame 41, two high-pressure nozzles 43 are arranged at the top of the gas filtering frame 41, after the dust-containing flue gas is subjected to denitration treatment, the treated air enters the inside of the gas filtering frame 41, the dust in the air is filtered by the filter cloth, clean air is sent out from the inside of the gas filtering frame 10, the sent air is prevented from containing dust, pollution to the surrounding environment of treatment equipment is caused, the high-pressure air is sprayed to the surface of the filter cloth by the high-pressure nozzles 43, the filter cloth is cleaned, and the filtering efficiency of the filter cloth on the dust is ensured.
The bottom of the denitration tower 10 is provided with a heat exchange tube 70, one end of the heat exchange tube 70 extends to the lower part of the inside of the four filter tubes 12, the other end of the heat exchange tube 70 is provided with heat exchange equipment, the inside of the heat exchange equipment is communicated with one end of the air outlet pipe 30, the clean air sent out is subjected to heat exchange through the heat exchange equipment, the clean air is cooled and then discharged, and the heat absorbed by the clean air is sent into the inside of the filter tubes 12 through the heat exchange tube 70 to maintain the catalytic temperature of a denitration catalyst, so that the energy consumption of dust-containing flue gas in the denitration process is effectively reduced.
Example 2
The invention also discloses a treatment method of the energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device, which specifically comprises the following steps:
step one, introducing dust-containing flue gas into a desulfurization tower for desulfurization treatment, heating the flue gas sent out of the desulfurization tower to 230-250 ℃ and then sending the flue gas into a denitration tower 10;
step two, introducing dust-containing flue gas into a flue gas supply pipe 14 through an air inlet pipe 20, then allowing the dust-containing flue gas to enter the interiors of four filter pipe sleeves 11 through the flue gas supply pipe 14, introducing ammonia gas into a reducing agent conveying pipe 15 through a material guide pipe 16 while allowing the dust-containing flue gas to enter the interiors of the filter pipe sleeves 11, controlling the temperature of the interiors of the filter pipe sleeves 11 within 200-450 ℃, fully mixing the ammonia gas and the dust-containing flue gas in the interiors of the filter pipe sleeves 11, stably adsorbing NH3 on the surfaces of denitration catalysts, and selectively reducing NOx into nitrogen and water;
step three, after denitration treatment is carried out on the dust-containing flue gas, the treated air enters the air filtering frame 41, dust in the air is filtered by utilizing filter cloth, clean air is sent out from the inside of the denitration tower 10, the sent clean air is subjected to heat exchange by utilizing heat exchange equipment, the clean air is cooled and discharged, and heat absorbed by the clean air is sent into the inside of the filter tube 12 through the heat exchange tube 70 to maintain the catalytic temperature of a denitration catalyst;
step four, when the filter tube 12 is utilized to perform denitration treatment on the dust-containing flue gas, the pressure difference between the inner part and the outer part of the filter tube 12 is monitored in real time, the pressure difference between the inner part and the outer part of the filter tube 12 is set to be the maximum value, when the pressure difference between the inner part and the outer part of the filter tube 12 reaches the maximum value, air is introduced into the soot blowing rod 31 in a pulse mode through the air guide tube 33 and the spring tube 34, then the air is subjected to pulse cleaning from the bottom and the peripheral surface of the soot blowing head 32 to the inner wall of the filter tube 12, and meanwhile, the driving end of the second servo electric cylinder 35 pushes the soot blowing rod 31 downwards, so that the soot blowing head 32 at the bottom end of the soot blowing rod 31 stretches into the inner part of the filter tube 12, and the denitration promotion catalyst surface below the filter tube 12 is subjected to ash cleaning treatment;
step five, when the filter tube 12 in the denitration assembly is maintained and replaced, the driving end of the first servo electric cylinder 60 drives the connecting ring 50 to move upwards, then the fixed cover 40 is separated from the connecting ring 50, and the connecting frame 25 is used for driving the filter tube 12 to be pulled out from the filter tube sleeve 11.
Example 3
Referring to fig. 8 to 9, on the basis of embodiment 1, a rotating assembly is further provided in the filter tube housing 11, the rotating assembly includes a rotating frame 51 and a fixed frame 52, the filter tube 12 is located above and below the inside of the filter tube housing 11, the fixed frames 52 are provided between opposite sides of the two fixed frames 52, the rotating frame 51 is provided with an inclined plate 53, one side of the inclined plate 53 is provided with a groove 54, the inclined plate 53 is located inside the rotating frame 51, the inclined plates 53 are distributed at equal angles with respect to a central axis of the rotating frame 51, an air blowing port is located on an inner wall of the air blowing frame 17, the inclination angle of the air blowing port is the same as that of the inclined plate 53, a plurality of mounting grooves 55 are provided on the top and bottom of the rotating frame 51, the plurality of mounting grooves 55 are distributed at equal angles with respect to the central axis of the rotating frame 51, balls 56 are provided on opposite sides of the two fixed frames 52, the balls 56 are respectively connected with the two rotating grooves 57 on the top and bottom of the rotating frame 51, three cleaning brushes 12 are provided on the surfaces of the three rotating frames, and three cleaning brushes are respectively disposed on the surfaces of the three surfaces of the rotating frame 51;
when the denitration treatment is performed on the dust-containing flue gas, the dust-containing flue gas and the ammonia gas are respectively introduced into the filter tube sleeve 11 through the air blowing ports on the two air blowing frames 17, the dust-containing flue gas and the ammonia gas are directly blown onto the inclined plate 53 after being sent out from the air blowing ports, the dust-containing flue gas and the ammonia gas are intercepted through the groove 54 on one side of the inclined plate 53, and a certain thrust is applied to one side of the inclined plate 53 by the dust-containing flue gas and the ammonia gas, so that the inclined plate 53 drives the rotating frame 51 to rotate in the filter tube sleeve 11, the mixing efficiency of the dust-containing flue gas and the ammonia gas is improved in the rotating process of the rotating frame 51, the denitration treatment efficiency of the dust-containing flue gas is accelerated, and the outer surface of the filter tube 12 is cleaned by the cleaning brush 58 arranged in the rotating frame 51, so that the influence of the dust-containing flue gas caused by impurities on the surface of the filter tube 12 on the influence on the denitration treatment efficiency of the dust-containing flue gas is solved.
And all that is not described in detail in this specification is well known to those skilled in the art.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides an energy-saving flue gas dust sulphur nitre pottery catalytic filter tube integrated device, includes denitration tower (10), intake pipe (20) and outlet duct (30), the both sides of denitration tower (10) are provided with intake pipe (20) and outlet duct (30) respectively, and outlet duct (30) are located the top of intake pipe (20), its characterized in that: the inside of denitration tower (10) is provided with denitration subassembly, denitration subassembly includes filter tube cover (11) and filter tube (12), filter tube cover (11) set up in the below of denitration tower (10) inside, and the inside of filter tube cover (11) is provided with filter tube (12), the inside absorption of filter tube (12) is provided with denitration catalyst, the top of filter tube (12) extends to the top of filter tube cover (11), the top of filter tube cover (11) still is provided with apron (13), and the inside cover of apron (13) is established at the surface of filter tube (12), filter tube cover (11) are located the inside of denitration tower (10) and are provided with four, and four filter tube covers (11) are the central axis about denitration tower (10) and are the degree distribution setting, the top of inside of denitration tower (10) is provided with smoke and dust pipe (14), and the inside of smoke and dust pipe (14) communicates with the inside of intake pipe (20), the inside cover (13) is overlapped and is provided with the surface of filter tube (12), the inside of conveyer pipe (16) and one side of conveyer pipe (16) is run through to denitration tower (10) outside of conveyer pipe (16), the interiors of the smoke dust air supply pipe (14) and the reducing agent conveying pipe (15) are communicated with the interiors of the four filter pipe sleeves (11);
the bottom of denitration tower (10) is provided with heat exchange tube (70), and the one end of heat exchange tube (70) extends to the below of four filter tube (12) inside, and wherein the other end of heat exchange tube (70) is provided with heat transfer equipment, and the inside of heat transfer equipment communicates with the one end of outlet duct (30).
2. The energy-saving flue gas dust sulfur and nitrate ceramic catalytic filter tube integrated device according to claim 1, wherein the integrated device is characterized in that: the top of denitration tower (10) still is provided with fixed lid (40), the bottom of fixed lid (40) is provided with go-between (50), and the bottom of fixed lid (40) is connected through bolt set with the top of go-between (50), the top of denitration tower (10) global is provided with three first servo electric jar (60), and the drive end of three first servo electric jar (60) all is connected with the global of go-between (50).
3. The energy-saving flue gas dust sulfur and nitrate ceramic catalytic filter tube integrated device according to claim 1, wherein the integrated device is characterized in that: the inside of filter tube cover (11) is provided with two frames of blowing (17), and the inside of two frames of blowing (17) is crisscross to set up each other, two the inner wall of frame of blowing (17) all is provided with the gas port of blowing, and two frames of blowing (17) communicate with the inside of smoke and dust air pipe (14), reductant conveyer pipe (15) respectively.
4. The energy-saving flue gas dust sulfur and nitrate ceramic catalytic filter tube integrated device according to claim 2, wherein: the inside of denitration tower (10) is provided with fixed plate (21), and fixed plate (21) are located denitration subassembly's top, the through-hole with filter tube (12) matched with is seted up to the inside of fixed plate (21), and the top of filter tube (12) extends to the top of through-hole, the top rotation of fixed plate (21) is provided with baffle (22), and the top of baffle (22) is provided with dwang (23).
5. The energy-saving flue gas dust sulfur and nitrate ceramic catalytic filter tube integrated device according to claim 4, wherein: the inside of denitration tower (10) still is provided with mounting panel (24), and the top of dwang (23) extends to the top of mounting panel (24), the top of mounting panel (24) is provided with link (25), and the bottom of link (25) is connected with the top of filter tube (12).
6. The energy-saving flue gas dust sulfur and nitrate ceramic catalytic filter tube integrated device according to claim 5, wherein the integrated device is characterized in that: the inside of link (25) is provided with the soot blowing subassembly, the soot blowing subassembly includes soot blowing pole (31) and soot blowing head (32), the top of fixed lid (40) is provided with air duct (33), and the bottom of air duct (33) extends to the inside of fixed lid (40), the bottom of fixed lid (40) is provided with soot blowing pole (31), and the inside of soot blowing pole (31) communicates with the bottom of air duct (33) through spring pipe (34), the bottom of soot blowing pole (31) is provided with soot blowing head (32), and the bottom and the global soot blowing mouth that all is provided with of soot blowing head (32).
7. The energy-saving flue gas dust sulfur and nitrate ceramic catalytic filter tube integrated device according to claim 6, wherein: the top of fixed lid (40) is provided with second servo electric jar (35), and the drive end of second servo electric jar (35) is connected through screw thread group with the top of soot blowing pole (31).
8. The energy-saving flue gas dust sulfur and nitrate ceramic catalytic filter tube integrated device according to claim 1, wherein the integrated device is characterized in that: one side of denitration tower (10) inner wall is provided with and strains gas frame (41), and strain the inside of gas frame (41) and the inside intercommunication of outlet duct (30), strain and be provided with the filter cloth between one side of gas frame (41) and one side of outlet duct (30), and strain the bottom of gas frame (41) and be provided with ash discharge pipe (42), strain the top of gas frame (41) and be provided with two high-pressure nozzle (43).
9. The method for processing the energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device according to any one of claims 1 to 8, which is characterized in that: the method specifically comprises the following steps:
step one, introducing dust-containing flue gas into a desulfurization tower for desulfurization treatment, heating the flue gas sent out of the desulfurization tower to 230-250 ℃, and then sending the flue gas into a denitration tower (10);
step two, introducing dust-containing flue gas into a flue gas supply pipe (14) through an air inlet pipe (20), then allowing the dust-containing flue gas to enter the interiors of four filter pipe sleeves (11) through the flue gas supply pipe (14), introducing ammonia into the interior of a reducing agent conveying pipe (15) by utilizing a material guide pipe (16) while allowing the dust-containing flue gas to enter the interiors of the filter pipe sleeves (11), controlling the temperature of the interiors of the filter pipe sleeves (11) within 200-450 ℃, fully mixing the ammonia and the dust-containing flue gas in the interiors of the filter pipe sleeves (11), stably adsorbing NH3 on the surfaces of denitration catalysts, and selectively reducing NOx into nitrogen and water;
step three, after denitration treatment is carried out on dust-containing flue gas, the treated air enters the air filtering frame (41), dust in the air is filtered by utilizing filter cloth, clean air is sent out from the inside of the denitration tower (10), heat exchange is carried out on the sent clean air by utilizing heat exchange equipment, the clean air is cooled and then discharged, and heat absorbed by the clean air is sent into the inside of the filter tube (12) through the heat exchange tube (70) to maintain the catalytic temperature of a denitration catalyst;
when the filter tube (12) is used for denitration treatment of dust-containing flue gas, the pressure difference between the inner part and the outer part of the filter tube (12) is monitored in real time, the pressure difference between the inner part and the outer part of the filter tube (12) is set to be the maximum value, when the pressure difference between the inner part and the outer part of the filter tube (12) reaches the maximum value, air is introduced into the soot blowing rod (31) in a pulse mode through the air guide tube (33) and the spring tube (34), then the air is subjected to pulse cleaning from the bottom and the peripheral surface of the soot blowing head (32) to the inner wall of the filter tube (12), and meanwhile, the driving end of the second servo electric cylinder (35) pushes the soot blowing rod (31) downwards, so that the soot blowing head (32) at the bottom end of the soot blowing rod (31) stretches into the inner part of the filter tube (12), and the denitration promotion catalyst surface below the filter tube (12) is subjected to ash removal treatment;
and fifthly, when the filter tube (12) in the denitration assembly is maintained and replaced, the connecting ring (50) is driven to move upwards through the driving end of the first servo electric cylinder (60), then the fixed cover (40) is separated from the connecting ring (50), and the filter tube (12) is driven to be pulled out from the filter tube sleeve (11) by the connecting frame (25).
CN202311160422.0A 2023-09-11 2023-09-11 Energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method Pending CN117258532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311160422.0A CN117258532A (en) 2023-09-11 2023-09-11 Energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311160422.0A CN117258532A (en) 2023-09-11 2023-09-11 Energy-saving flue gas dust sulfur nitrate ceramic catalytic filter tube integrated device and method

Publications (1)

Publication Number Publication Date
CN117258532A true CN117258532A (en) 2023-12-22

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN117258532A (en)

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