CN117101403B - Ultralow temperature denitration device of heating furnace - Google Patents
Ultralow temperature denitration device of heating furnace Download PDFInfo
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- CN117101403B CN117101403B CN202311378780.9A CN202311378780A CN117101403B CN 117101403 B CN117101403 B CN 117101403B CN 202311378780 A CN202311378780 A CN 202311378780A CN 117101403 B CN117101403 B CN 117101403B
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- butt joint
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 123
- 230000000694 effects Effects 0.000 claims abstract description 9
- 210000001503 joint Anatomy 0.000 claims description 58
- 239000000779 smoke Substances 0.000 claims description 25
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 19
- 239000011949 solid catalyst Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000012495 reaction gas Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 15
- 239000003546 flue gas Substances 0.000 description 15
- 238000003032 molecular docking Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- 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
Abstract
An ultralow-temperature denitration device of a heating furnace belongs to the technical field of denitration, and aims to solve the problems that if a catalyst cannot be replaced in time, an inactivated catalyst needs a higher temperature or more denitration agents to maintain a denitration effect, so that energy consumption cost is increased, and denitration efficiency is gradually reduced; according to the invention, the new catalyst combination frame is installed in place, the two groups of hanging clamps work simultaneously, the aged catalyst is replaced one by one, the replacement efficiency is high, the downtime of the denitration device is reduced, and the economic loss caused by production interruption is reduced; the catalyst combination rack is integrally and stably positioned in the denitration chamber, so that the denitration chamber is convenient to replace, and the problem of catalyst displacement caused by mutual collision or impact among catalyst particles due to high flow rate and pressure change of gas can be solved.
Description
Technical Field
The invention relates to the technical field of denitration, in particular to an ultralow-temperature denitration device of a heating furnace.
Background
Incinerator is a common waste gas treatment device for treating harmful substances in industrial waste gas. However, a large amount of nitrogen oxides (NOx) are generated during incineration, mainly including nitrogen monoxide (NO) and nitrogen dioxide (NO 2). High concentration of nitrogen oxides is harmful to the environment and human health, and in order to reduce the emission of nitrogen oxides generated by the incinerator, a denitration technology is generally adopted. The denitration device is used for reducing the emission of nitrogen oxides in the combustion process, and mainly aims to reduce air pollution and environmental impact, the denitration device adopts different technologies and methods to convert NOx into harmless substances, so that the emission of waste gas accords with the environmental protection regulation standard, the denitration device converts the NOx in the combustion emission into harmless substances by using a chemical reaction or physical treatment method, the common denitration method is mainly a selective catalytic reduction method, the SCR denitration device is used for controlling and reducing the emission of NOx by injecting ammonia water or urea solution into flue gas as a denitration agent and reacting the NOx with the denitration agent under the action of a catalyst, and the denitration device is widely applied to combustion processes of power stations, industrial boilers, oil refineries, steel plants and the like.
As known from the authorized publication number CN218393097U, the flue gas denitration device of a heating furnace is disclosed, and relates to the technical field of flue gas denitration, the flue gas denitration device comprises a heating furnace and a chimney, wherein two ends of the chimney are respectively provided with a flue gas inlet and a flue gas outlet, the flue gas inlet is communicated with the heating furnace, and the flue gas denitration device also comprises an SCR reactor and an ammonia water evaporator, and the ammonia water evaporator is communicated with the SCR reactor; a denitration inlet and a denitration outlet which are communicated with the inside of the chimney are arranged on the side wall of the chimney, and the denitration inlet and the denitration outlet are communicated through a denitration pipe; the SCR reactor is arranged on the denitration pipe, the horizontal height of the SCR reactor is not higher than that of the smoke inlet, by adopting the technical scheme, the denitration inlet and the denitration outlet are arranged on the chimney, and the denitration pipe is arranged to lead out smoke in the chimney to the SCR reactor, so that the position of the SCR reactor can be flexibly set, the height of the SCR reactor is set to be close to the ground, the installation, maintenance and replacement of the catalyst of the SCR reactor are facilitated, and the original performance of the heating furnace can be ensured not to be changed. The catalyst is a core component in the denitration device, however, in the denitration process, an oxidant and a sulfur oxide react with the catalyst to gradually cause the deactivation of the catalyst, on one hand, the aged catalyst can have the problems of active site reduction, loose structure, surface area reduction and the like, on the other hand, along with the increase of the operation time, a large amount of pollutants such as dust, impurities and the like can be accumulated on the surface of the catalyst, if the catalyst cannot be replaced in time, the deactivated catalyst needs higher temperature or more denitration agent to maintain the denitration effect, so that the energy consumption cost is increased, and the denitration efficiency is gradually reduced.
Aiming at the problems, the prior device is improved, and the ultralow-temperature denitration device of the heating furnace is provided.
Disclosure of Invention
The invention aims to provide an ultralow-temperature denitration device for a heating furnace, which solves the problems that if a catalyst cannot be replaced in time in the background technology, an inactivated catalyst needs higher temperature or more denitration agents to maintain the denitration effect, so that the energy consumption cost is increased, and the denitration efficiency is gradually reduced.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an ultralow temperature denitrification facility of heating furnace, including putting ground base and installing the support frame at the ground base up end, the inboard fixed mounting of support frame has denitration device, the side of support frame is provided with catalyst change mechanism, denitration device is including arranging the inside denitration main part of support frame and seting up the denitration room in denitration main part, the smoke inlet port is installed to the upper end of denitration device one side facade, the lower extreme of denitration device one side facade is provided with out the smoke port, catalyst replacement district has been seted up to the opposite side facade of denitration device, catalyst replacement district is linked together with the denitration room, the inboard of denitration room is provided with catalyst combination frame, one end and the catalyst replacement district of catalyst combination frame correspond, the upper end of catalyst combination frame is provided with fume extractor, fume extractor installs in the inner wall of denitration room, the bottom of catalyst combination frame is provided with support grid lining frame, support grid lining frame is used for supporting catalyst combination frame, the edge face of support grid lining frame is in butt joint with the inner wall face of denitration room, the effect of entering the denitration room along the smoke inlet port, the effect of catalyst in the denitration room is equipped with catalyst in the exhaust port, the exhaust gas is discharged from the exhaust gas, the reaction is accomplished to the exhaust gas is discharged from the exhaust place, the reaction is completed.
Further, the inner top surface of the catalyst replacement area is provided with a lifting adjusting inner groove, the inner bottom surface of the catalyst replacement area is provided with a butt joint extending groove, the positions of the lifting adjusting inner groove and the butt joint extending groove are vertically corresponding, and lifting sealing plates are arranged in the lifting adjusting inner groove and the butt joint extending groove.
Further, the inner bottom of the lifting adjusting inner groove is provided with a first cylinder, the bottom end of the first cylinder is connected with the top end of the lifting baffle plate, and the bottom end of the lifting baffle plate is matched with the butt joint extending groove.
Further, the smoke exhausting mechanism comprises a swinging shaft piece arranged at the upper end of the catalyst combination frame and a swinging suction rod arranged on the surface of the swinging shaft piece, two groups of swinging shaft pieces and two groups of swinging suction rods are arranged on the surface of the swinging shaft piece, the swinging shaft piece is arranged on the inner wall surface of the denitration chamber, and the two groups of swinging shaft pieces are positioned at diagonal positions.
Further, the catalyst combination frame comprises a drawing plate frame with the width size matched with the catalyst replacement area and an outer sealing plate arranged at the outer end head of the drawing plate frame, the upper surface of the drawing plate frame is uniformly provided with a jogged limiting frame, the inner surface of the jogged limiting frame is provided with a butt joint enclosing groove, the upper end of the jogged limiting frame is provided with a catalyst box, the jogged limiting frame and the catalyst box are provided with eight groups, and the eight groups of catalyst boxes are laminated and arranged.
Further, an extending through groove is arranged between the embedded limiting frame and the outer sealing plate, the extending through groove is formed in the surface of the drawing plate frame and is in through connection with the lifting sealing plate, and sliding path grooves are formed in two side ends of the drawing plate frame.
Further, the catalyst case comprises a case body positioned on the upper surface of the embedded limit frame and a clamping ring groove formed in the upper end of the side surface of the case body, a butt joint groove surface is formed in the lower end of the side surface of the case body, a solid catalyst is arranged on the inner side of the case body, and the butt joint groove surface is in butt joint with the butt joint ring groove.
Further, movable sliding long grooves are uniformly formed in two side wall surfaces in the catalyst replacement area, two side edge ends of the drawing plate frame are in butt joint with the movable sliding long grooves, a transverse driving track piece is arranged on the inner bottom surface of each movable sliding long groove, and the transverse driving track piece is in butt joint with the sliding path groove.
Further, the catalyst replacement mechanism comprises a vertical guide frame positioned on one side of the supporting frame and a lifting rail arranged on the inner side of the top end of the vertical guide frame, wherein the vertical guide frame is provided with two groups, the lifting rail is positioned between the two groups of vertical guide frames, the lifting rail is provided with two groups, the two groups of lifting rails are correspondingly provided with lifting pieces, the lifting rails control the left and right sliding of the lifting pieces, the lower surface of the lifting pieces is provided with lifting ropes, the bottom ends of the lifting ropes are provided with lifting clamps, and the lifting clamps are used for clamping the catalyst boxes.
Further, the hanging fixture comprises a U-shaped butt joint fixture matched with the clamping ring surrounding groove and a butt joint handle rod arranged at one side end of the U-shaped butt joint fixture, two ends of the butt joint handle rod are respectively provided with a movable limiting inserting rod, two ends of the U-shaped butt joint fixture are respectively provided with a movable limiting groove, the movable limiting inserting rods are in butt joint with the movable limiting grooves, a second air cylinder is arranged between the U-shaped butt joint fixture and the butt joint handle rod, an L-shaped hanging beam rod is arranged at the middle end of the butt joint handle rod, and the bottom end of a hanging rope is connected with the upper surface of the L-shaped hanging beam rod.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the ultralow-temperature denitration device for the heating furnace, provided by the invention, the novel catalyst combination frame is installed in place, the two groups of hanging clamps work simultaneously, the aged catalyst is replaced one by one, the replacement efficiency is high, the downtime of the denitration device is reduced, and the economic loss caused by production interruption is reduced.
2. The ultralow-temperature denitration device for the heating furnace provided by the invention has the advantages that the catalyst combination rack is integrally and stably arranged in the denitration chamber, so that the denitration device is convenient to replace, and the problem of catalyst displacement caused by mutual collision or impact among catalyst particles due to high flow rate and pressure change of gas can be solved.
3. According to the ultralow-temperature denitration device for the heating furnace, provided by the invention, the fan-shaped movable range of the two groups of swing suction rods is utilized, the cleaning range area of impurities is enlarged, the impurities such as dust and particles on the surface of the catalyst are adsorbed and collected, the two groups of swing suction rods are attached to the inner wall surface of the denitration chamber, and the normal circulation of smoke is not influenced, so that the long-term stable operation and the high-efficiency denitration effect of the catalyst are ensured.
4. According to the ultralow-temperature denitration device for the heating furnace, the U-shaped butt clamp does not bulge at the position of the clamping ring groove, so that the catalyst box in the attached state can be smoothly clamped, and enough gaps exist between the outer sealing plate and the catalyst box, so that the hanging clamp can smoothly enter the gaps, and the replacement efficiency of the catalyst is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic plan view of the interior of the denitration device of the present invention;
FIG. 3 is a schematic plan view of the interior of the smoke evacuation mechanism of the present invention;
FIG. 4 is a schematic view of the structure of the catalyst assembly frame of the present invention;
FIG. 5 is a schematic view of the internal planar structure of the movable sliding slot of the present invention;
FIG. 6 is a schematic view of the assembled structure of the catalyst assembly frame of the present invention;
FIG. 7 is a schematic view showing the overall structure of the catalyst replacement mechanism of the present invention;
fig. 8 is a schematic structural view of a hanging fixture according to the present invention.
In the figure: 1. a ground base; 2. a support frame; 3. denitration equipment; 31. a denitration main body; 311. lifting and adjusting the inner groove; 312. a butt-joint extension groove; 313. lifting the sealing plate; 314. a first cylinder; 32. a denitration chamber; 33. a smoke inlet port; 34. a smoke outlet port; 35. a catalyst replacement zone; 351. a movable sliding long groove; 352. a lateral drive rail member; 36. a catalyst combination rack; 361. drawing the plate frame; 362. an outer sealing plate; 363. extending the through groove; 364. embedding a limit frame; 365. a butt joint surrounding groove; 366. a catalyst tank; 3661. a case; 3662. clamping the ring surrounding groove; 3663. butting groove surfaces; 3664. a solid catalyst; 367. a slip path groove; 37. a smoke exhausting mechanism; 371. a swing shaft member; 372. swinging the suction rod; 38. supporting the grid lining frame; 4. a catalyst replacement mechanism; 41. a vertical guide frame; 42. hanging and connecting the rail; 43. a hanging piece; 44. a hanging rope; 45. a hanging clamp; 451. u-shaped butt joint clamp; 452. a butt joint handle rod; 453. a movable limit inserted link; 454. a movable limit groove; 455. a second cylinder; 456. and L-shaped hanging beam rods.
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. 1-8, in order to solve the technical problems that if the catalyst cannot be replaced in time, the deactivated catalyst needs a higher temperature or more denitration agents to maintain the denitration effect, so that the energy consumption cost is increased, and the denitration efficiency is gradually reduced, the following preferred technical scheme is provided:
an ultralow-temperature denitration device of a heating furnace comprises a ground base 1 and a supporting frame 2 arranged on the upper end surface of the ground base 1, wherein denitration equipment 3 is fixedly arranged on the inner side of the supporting frame 2, a catalyst replacement mechanism 4 is arranged at the side end of the supporting frame 2, the denitration equipment 3 comprises a denitration main body 31 arranged on the inner side of the supporting frame 2 and a denitration chamber 32 arranged in the denitration main body 31, a smoke inlet port 33 is arranged at the upper end of one side elevation of the denitration equipment 3, a smoke outlet port 34 is arranged at the lower end of one side elevation of the denitration equipment 3, a catalyst replacement area 35 is arranged at the other side elevation of the denitration equipment 3, the catalyst replacement area 35 is communicated with the denitration chamber 32, a catalyst combination frame 36 is arranged on the inner side of the denitration chamber 32, one end of the catalyst combination frame 36 corresponds to the catalyst replacement area 35, a smoke discharging mechanism 37 is arranged at the upper end of the catalyst combination frame 36, the smoke discharging mechanism 37 is arranged on the inner wall surface of the denitration chamber 32, a supporting grid lining frame 38 is arranged at the bottom end of the catalyst combination frame 36, the supporting grid lining frame 38 is used for supporting the catalyst combination frame 36, the edge surface of the supporting grid lining frame 38 is in butt joint with the inner wall surface of the denitration chamber 32, flue gas enters the inside of the denitration chamber 32 along the smoke inlet port 33, under the action of the catalyst, nitrogen oxides in the flue gas undergo catalytic reduction reaction to generate nitrogen and water, a discharge port is arranged at the bottom of the denitration device 3, reaction gas is discharged from the position of the smoke outlet port 34, and liquid is discharged from the discharge port to complete denitration operation.
The inner top surface of the catalyst replacement area 35 is provided with a lifting adjustment inner groove 311, the inner bottom surface of the catalyst replacement area 35 is provided with a butt joint extension groove 312, the positions of the lifting adjustment inner groove 311 and the butt joint extension groove 312 are vertically corresponding, the lifting adjustment inner groove 311 and the butt joint extension groove 312 are internally provided with a lifting sealing plate 313, the inner bottom end of the lifting adjustment inner groove 311 is provided with a first air cylinder 314, the bottom end of the first air cylinder 314 is connected with the top end of the lifting sealing plate 313, and the bottom end of the lifting sealing plate 313 is matched with the butt joint extension groove 312.
The catalyst combination frame 36 comprises a drawing plate frame 361 with the width size matched with the catalyst replacement area 35 and an outer sealing plate 362 arranged at the outer end of the drawing plate frame 361, the upper surface of the drawing plate frame 361 is uniformly provided with a jogged limiting frame 364 in a arrayed mode, the inner surface of the jogged limiting frame 364 is provided with a butt joint surrounding groove 365, the upper end of the jogged limiting frame 364 is provided with a catalyst box 366, the jogged limiting frame 364 and the catalyst box 366 are provided with eight groups, the eight groups of catalyst boxes 366 are in joint arrangement, an extending through groove 363 is arranged between the jogged limiting frame 364 and the outer sealing plate 362, the extending through groove 363 is formed in the surface of the drawing plate frame 361, the extending through groove 363 is in through connection with the lifting sealing plate 313, and both side ends of the drawing plate frame 361 are provided with sliding path grooves 367.
The catalyst box 366 comprises a box body 3661 positioned on the upper surface of the jogged limiting frame 364 and a clamping ring surrounding groove 3662 arranged on the upper end of the side surface of the box body 3661, the lower end of the side surface of the box body 3661 is provided with a butt joint groove surface 3663, the inner side of the box body 3661 is provided with a solid catalyst 3664, the butt joint groove surface 3663 is butted with the butt joint ring groove 365, two side wall surfaces in the catalyst replacement area 35 are uniformly provided with movable sliding long grooves 351, two side edge ends of the drawing plate frame 361 are butted with the movable sliding long grooves 351, the inner bottom surface of the movable sliding long grooves 351 is provided with a transverse driving rail piece 352, the transverse driving rail piece 352 is butted with the sliding path groove 367, the catalyst replacement mechanism 4 comprises a vertical guide frame 41 positioned on one side of the supporting frame 2 and a hanging rail 42 arranged on the inner side of the top end of the vertical guide frame 41, the hanging rail 42 is arranged between the two groups of vertical guide frames 41, the hanging rails 42 are provided with two groups, the hanging members 43 are correspondingly arranged on the two groups of hanging rails 42, the hanging rails 42 control the left and right sliding of the hanging members 43, the hanging ropes 44 are arranged on the lower surfaces of the hanging members 43, hanging clamps 45 are arranged at the bottom ends of the hanging ropes 44, the hanging clamps 45 are used for clamping the catalyst boxes 366, when the catalyst combination frame 36 is completely replaced, the first cylinders 314 are started, the lifting baffle 313 is controlled to move downwards along the lifting adjusting inner grooves 311, the lifting baffle 313 penetrates through the groups of extending through grooves 363, besides, the edge ends of the pulling plate frames 361 are connected with the movable sliding long grooves 351 and the inner wall surfaces of the denitration chambers 32 in a jogged mode, the boxes 3661 in a jogged mode are in spacing joint with the inner wall surfaces of the denitration chambers 32 and the side vertical surfaces of the lifting baffle 313, so that the catalyst combination frame 36 is wholly and stably positioned in the denitration chambers 32, not only is convenient for replacement, but also can solve the problem of catalyst displacement caused by mutual collision or impact among catalyst particles due to high flow rate and pressure change of gas.
The working principle based on the first embodiment is as follows: the flue gas enters the denitration chamber 32 along the flue gas inlet 33, nitrogen oxides in the flue gas undergo catalytic reduction reaction under the action of a catalyst to generate nitrogen and water, a discharge port is arranged at the bottom of the denitration device 3, reaction gas is discharged from the position of the flue gas outlet 34, liquid is discharged from the discharge port to complete denitration operation, two groups of lifting pieces 43 slide independently on the surfaces of the two groups of lifting rails 42 respectively, in an initial state, the lifting pieces 43 are positioned at the tail ends of the lifting rails 42, the positions of the two groups of lifting pieces 43 are opposite, a winding mechanism is arranged on the lower surface of the lifting pieces 43 and used for being in butt joint with the lifting ropes 44, after the catalyst is used for a period of time, one group of lifting ropes 44 drive a lifting clamp 45 to move downwards close to the inner wall surface of the vertical guide frame 41 until the lowest end, the lifting clamp 45 clamps the catalyst combination frame 36 to be replaced, a sufficient distance is reserved between the two groups of vertical guide frames 41, the distance between the two sets of vertical guide frames 41 can be made larger than the whole width of the denitration main body 31, the winding mechanism is started again, so that the hanging clamp 45 drives the catalyst combination frame 36 to move upwards, the catalyst combination frame 36 extends outwards along the movable sliding long groove 351 through the connection of the sliding path groove 367 and the transverse driving track piece 352, then the other set of hanging ropes 44 clamp the replaced catalyst combination frame 36 through the hanging clamp 45, the catalyst combination frame 36 is taken out from the surface of the drawing plate frame 361, the new catalyst combination frame 36 replaces the point position, the new catalyst combination frame 36 is installed in place through the fit of the butt joint groove surface 3663 and the butt joint surrounding groove 365, the two sets of hanging clamp 45 work simultaneously, the aged catalyst is replaced, the replacement is completed, the replacement efficiency is fast, the downtime of the denitration device is reduced, reducing the economic loss caused by production interruption.
Example two
Referring to fig. 3 and 8, in comparison with the first embodiment, the lifting fixture 45 of the present embodiment includes a U-shaped docking fixture 451 matching with the clamping circumferential groove 3662 and a docking rod 452 mounted at one side end of the U-shaped docking fixture 451, two ends of the docking rod 452 are provided with a movable limiting inserting rod 453, two ends of the U-shaped docking fixture 451 are provided with a movable limiting groove 454, the movable limiting inserting rod 453 is in butt joint with the movable limiting groove 454, a second cylinder 455 is disposed between the U-shaped docking fixture 451 and the docking rod 452, an L-shaped lifting beam 456 is mounted at a middle end position of the docking rod 452, a bottom end of the lifting rope 44 is connected with an upper surface of the L-shaped lifting beam 456, the smoke exhausting mechanism 37 includes a swing shaft 371 disposed at an upper end of the catalyst assembly 36 and a swing suction rod 372 mounted on a surface of the swing shaft 371, the swing shaft 371 and the swing suction rod 372 are provided with two groups, the swing shaft 371 is mounted on an inner wall surface of the denitration chamber 32, and the two groups of swing shaft 371 are disposed at diagonal positions.
Specifically, the device is in the in-process of operation, the denitration device is after long-time operation, the catalyst combination frame 36 surface of the uppermost can condense a certain amount of impurity, through the setting of oscillating shaft piece 371 and oscillating suction rod 372, oscillating shaft piece 371 control oscillating suction rod 372 is in the reciprocal swing operation of ninety degrees, utilize the fan-shaped movable range of two sets of oscillating suction rods 372, the clearance scope region of impurity is enlarged, adsorb the impurity such as dust on catalyst surface, impurity such as particulate matter is collected, two sets of oscillating suction rods 372 laminating in the inner wall surface of denitration chamber 32, can not influence the normal circulation of flue gas, in order to guarantee the long-term steady operation and the high-efficient denitration effect of catalyst, start second cylinder 455, utilize movable limiting groove 454 and movable limiting insert rod 453's relative slip, so that control U type butt joint clamp 451 slides to one side for butt joint handle 452, make U type butt joint clamp 451 smoothly with the clamp ring groove 3662, U type butt joint clamp 451 can not appear protruding in the position of clamp ring groove 3662, can press from the catalyst case 366 of laminating state smoothly, and the outer sufficient clearance 45 is gone into in order to change in this clearance smoothly with the catalyst to promote the clearance.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (3)
1. The utility model provides a heating furnace ultralow temperature denitrification facility, includes place ground base (1) and installs in the support frame (2) of putting ground base (1) up end, the inboard fixed mounting of support frame (2) has denitration equipment (3), its characterized in that: the side end of the supporting frame (2) is provided with a catalyst replacement mechanism (4), the denitration device (3) comprises a denitration main body (31) arranged at the inner side of the supporting frame (2) and a denitration chamber (32) arranged in the denitration main body (31), a smoke inlet port (33) is arranged at the upper end of one side vertical surface of the denitration device (3), a smoke outlet port (34) is arranged at the lower end of one side vertical surface of the denitration device (3), a catalyst replacement area (35) is arranged at the other side vertical surface of the denitration device (3), the catalyst replacement area (35) is communicated with the denitration chamber (32), a catalyst combination frame (36) is arranged at the inner side of the denitration chamber (32), one end of the catalyst combination frame (36) corresponds to the catalyst replacement area (35), a smoke exhausting mechanism (37) is arranged at the upper end of the catalyst combination frame (36), the smoke exhausting mechanism (37) is arranged on the inner wall surface of the denitration chamber (32), a supporting grid frame (38) is arranged at the bottom end of the catalyst combination frame (36), the supporting frame (38) is used for supporting the catalyst combination frame (36) to enter the inner wall surface of the denitration chamber (32) and is opposite to the inner wall surface of the denitration chamber (32) to generate a water effect, and the smoke is reduced along the inner wall surface of the catalyst combination frame (32), the bottom of the denitration device (3) is provided with a discharge port, the reaction gas is discharged from the position of the smoke outlet port (34), and the liquid is discharged from the discharge port to complete denitration operation;
lifting adjusting inner grooves (311) are formed in the inner top surface of the catalyst replacement area (35), abutting extension grooves (312) are formed in the inner bottom surface of the catalyst replacement area (35), the positions of the lifting adjusting inner grooves (311) and the abutting extension grooves (312) are vertically corresponding, and lifting sealing plates (313) are arranged in the lifting adjusting inner grooves (311) and the abutting extension grooves (312);
the inner bottom end of the lifting adjusting inner groove (311) is provided with a first air cylinder (314), the bottom end of the first air cylinder (314) is connected with the top end of the lifting sealing plate (313), and the bottom end of the lifting sealing plate (313) is matched with the butt joint extending groove (312);
the smoke exhausting mechanism (37) comprises a swinging shaft piece (371) arranged at the upper end of the catalyst combination frame (36) and a swinging suction rod (372) arranged on the surface of the swinging shaft piece (371), two groups of swinging shaft pieces (371) and two groups of swinging suction rods (372) are respectively arranged, the swinging shaft piece (371) is arranged on the inner wall surface of the denitration chamber (32), and the two groups of swinging shaft pieces (371) are positioned at diagonal positions;
the catalyst combination frame (36) comprises a drawing plate frame (361) with the width size matched with the catalyst replacement area (35) and an outer sealing plate (362) arranged at the outer end of the drawing plate frame (361), the upper surface of the drawing plate frame (361) is uniformly provided with a jogged limiting frame (364), the inner surface of the jogged limiting frame (364) is provided with a butt joint surrounding groove (365), the upper end of the jogged limiting frame (364) is provided with a catalyst box (366), the jogged limiting frame (364) and the catalyst box (366) are provided with eight groups, and the eight groups of catalyst boxes (366) are in joint arrangement;
an extension through groove (363) is formed between the embedded limit frame (364) and the outer sealing plate (362), the extension through groove (363) is formed in the surface of the drawing plate frame (361), the extension through groove (363) is in through connection with the lifting sealing plate (313), and sliding path grooves (367) are formed in two side ends of the drawing plate frame (361);
the two side wall surfaces inside the catalyst replacement area (35) are uniformly provided with movable sliding long grooves (351), two side edge ends of the drawing plate frame (361) are in butt joint with the movable sliding long grooves (351), the inner bottom surface of the movable sliding long grooves (351) is provided with transverse driving track pieces (352), and the transverse driving track pieces (352) are in butt joint with the sliding path grooves (367);
the catalyst replacement mechanism (4) comprises a vertical guide frame (41) positioned on one side of the supporting frame (2) and a lifting rail (42) arranged on the inner side of the top end of the vertical guide frame (41), wherein the vertical guide frame (41) is provided with two groups, the lifting rail (42) is positioned between the two groups of vertical guide frames (41), the lifting rail (42) is provided with two groups, the two groups of lifting rails (42) are respectively provided with a lifting piece (43) correspondingly, the lifting rail (42) controls the left and right sliding of the lifting pieces (43), the lower surface of the lifting pieces (43) is provided with lifting ropes (44), and lifting clamps (45) are arranged at the bottom ends of the lifting ropes (44) and used for clamping catalyst boxes (366).
2. The ultra-low temperature denitration device of a heating furnace as claimed in claim 1, wherein: the catalyst box (366) comprises a box body (3661) positioned on the upper surface of the jogged limiting frame (364) and a clamping ring groove (3662) arranged at the upper end of the side surface of the box body (3661), the lower end of the side surface of the box body (3661) is provided with a butt joint groove surface (3663), the inner side of the box body (3661) is provided with a solid catalyst (3664), and the butt joint groove surface (3663) is in butt joint with the butt joint ring groove (365).
3. The ultra-low temperature denitration device of a heating furnace as claimed in claim 2, wherein: the lifting clamp (45) comprises a U-shaped butt joint clamp (451) matched with the clamping surrounding groove (3662) and a butt joint handle rod (452) arranged at one side end of the U-shaped butt joint clamp (451), movable limiting inserting rods (453) are arranged at two ends of the butt joint handle rod (452), movable limiting grooves (454) are formed in two ends of the U-shaped butt joint clamp (451), the movable limiting inserting rods (453) are in butt joint with the movable limiting grooves (454), a second air cylinder (455) is arranged between the U-shaped butt joint clamp (451) and the butt joint handle rod (452), an L-shaped lifting beam rod (456) is arranged at the middle end of the butt joint handle rod (452), and the bottom end of the lifting rope (44) is connected with the upper surface of the L-shaped lifting beam rod (456).
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| CN202311378780.9A CN117101403B (en) | 2023-10-24 | 2023-10-24 | Ultralow temperature denitration device of heating furnace |
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| CN202311378780.9A CN117101403B (en) | 2023-10-24 | 2023-10-24 | Ultralow temperature denitration device of heating furnace |
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