CN114797431A - Combined denitration device based on SNCR and SCR - Google Patents
Combined denitration device based on SNCR and SCR Download PDFInfo
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- CN114797431A CN114797431A CN202210058955.7A CN202210058955A CN114797431A CN 114797431 A CN114797431 A CN 114797431A CN 202210058955 A CN202210058955 A CN 202210058955A CN 114797431 A CN114797431 A CN 114797431A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 75
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000004202 carbamide Substances 0.000 claims abstract description 55
- 239000003054 catalyst Substances 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 81
- 238000003756 stirring Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 15
- 238000005213 imbibition Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 68
- 239000003546 flue gas Substances 0.000 abstract description 68
- 230000000694 effects Effects 0.000 abstract description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 230000002349 favourable effect Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 230000000630 rising effect Effects 0.000 description 6
- 241000883990 Flabellum Species 0.000 description 5
- 230000001737 promoting effect Effects 0.000 description 5
- 238000001802 infusion Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (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)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a combined denitration device based on SNCR and SCR, which comprises a processing main body, an SNCR component and an SCR component, an exhaust pipe is connected in the exhaust port, an SNCR component and an SCR component are arranged on the processing main body, the suction pump is started to ensure that the liquid suction pipe sucks the urea solution from the urea box, the urea solution is sprayed into the treatment chamber through the liquid conveying pipe and the atomizing spray head, the contact area of the solution and the air can be enlarged through the atomizing nozzle, the denitration effect on the flue gas is improved, when the flue gas enters the reaction cavity of the reaction box through the air inlet hole, the flue gas can react with the catalyst to remove oxynitride of the flue gas, thereby can avoid the SNCR subassembly not handled the phenomenon emergence that is discharged promptly at reaction temperature not reaching standard flue gas, can carry out the secondary denitration to the flue gas after the SNCR subassembly purifies again, and then can improve whole device denitration effect.
Description
Technical Field
The invention relates to the technical field of flue gas treatment, in particular to a combined denitration device based on SNCR and SCR.
Background
Furnace flue gas usually contains a large amount of nitrogen oxides NOx such as NO, and the nitrogen oxides directly discharged into the atmosphere pollute the air, form photochemical smog and acid rain and are harmful to human health, so the flue gas must be subjected to denitrification (namely denitration) treatment before being discharged. At present, the flue gas denitration technology mainly comprises two types: the Selective Catalytic Reduction (SCR) method and the selective non-catalytic reduction denitration (SNCR) method are characterized in that under the action of a certain temperature and a catalyst, liquid ammonia, ammonia water or urea and the like are used as reducing agents to selectively react with nitrogen oxides in flue gas to generate nontoxic and pollution-free nitrogen and water. The SCR method has low reaction temperature (300-420 ℃) and denitration efficiency of more than 85%. The SCR technology has the characteristics of high denitration efficiency, low ammonia escape and the like.
The denitration device of current carries out the denitration through single SNCR mode or SCR mode mostly, because SNCR needs high temperature just can react, SCR's reaction low temperature just can go on, still need preheat to reaction temperature to the flue gas of earlier stage and go on using SNCR denitration room, causes the flue gas in earlier stage not just by the emission treatment, causes nitrogen oxide pollution easily.
Disclosure of Invention
The invention aims to provide a combined denitration device based on SNCR and SCR, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a combined denitration device based on SNCR and SCR comprises a processing main body, a processing chamber, an air inlet pipe, an air outlet pipe, an SNCR component, an SCR component, a stirring component and a turning component;
the utility model discloses a denitration treatment device, including processing main part, exhaust port, SCR subassembly, fixed mounting has the guide board in the processing main part, the bottom input of processing main part is connected with the intake pipe, the gas vent has been seted up at the top of processing main part, gas after the denitration is conveniently carried through the blast pipe to gas vent in-connection has the blast pipe, be provided with SNCR subassembly and SCR subassembly in the processing main part, be provided with on the SNCR subassembly and stir the subassembly, be provided with the subassembly that turns on the SCR subassembly, the SCR subassembly is located the top of SNCR subassembly, and through SNCR subassembly and SCR subassembly use of cooperateing, can also avoid the flue gas not being handled and the phenomenon that is discharged takes place promptly.
As a preferred technical scheme, the SNCR component comprises a urea box, a suction pump, a pipette, a transfusion tube and an atomizing spray head;
fixed mounting has urea case and suction pump in the processing main part, be connected with pipette and transfer line on input, the output of suction pump respectively, the imbibition hole has been seted up on the urea case, the pipette runs through the imbibition hole and alternates at the urea incasement, it has seted up perforation one in the processing main part, state the liquid pipe and run through the perforation and be connected with atomizer in the lump through stirring subassembly, atomizer is located the treatment chamber, through starting the suction pump, makes the pipette follow urea incasement and inhales urea solution, and the rethread transfer line sprays urea solution in the treatment chamber through atomizer, can enlarge the area of contact of solution and air through atomizer, improves the denitration effect to the flue gas.
As a preferred technical scheme, the SCR component includes a reaction box, a reaction chamber, an air inlet, and an air outlet, the reaction box is fixedly installed in the processing chamber, the reaction box is located above the atomizer, the reaction chamber is disposed in the reaction box, a catalyst is filled in the reaction chamber, a plurality of air inlets are disposed at the bottom of the reaction box, a plurality of air outlets are disposed at the top of the reaction box, the apertures of the air inlets and the air outlets are smaller than the diameter of catalyst particles, and when flue gas enters the reaction chamber of the reaction box through the air inlets, the flue gas can react with the catalyst to remove oxynitride of the flue gas, so that the phenomenon that the flue gas is not processed and discharged when the reaction temperature does not reach the standard can be avoided, and the flue gas purified by the SNCR component can be denitrated for a second time, thereby improving the denitration effect of the whole device.
According to a preferable technical scheme, the stirring assembly comprises a fixing rod, a fixing block, a first rotating hole, a first sealing bearing, a hollow pipe, a transmission block, blades and a fan plate;
the stirring assembly is positioned below the guide plate, a fixed rod is fixedly installed on the guide plate, a fixed block is fixedly installed at one end, far away from the guide plate, of the fixed rod, a first rotating hole is formed in the bottom of the fixed block, a first sealing bearing is fixedly installed in the first rotating hole, a hollow tube is fixedly installed in the first sealing bearing, six fan plates are fixedly installed on the side wall of the hollow tube along the circumferential direction, a transmission block is fixedly installed at one end, far away from the fixed block, of the hollow tube, blades are fixedly installed on the side wall of the transmission block along the circumferential direction, when smoke enters the treatment chamber through an air inlet pipe, the rising smoke can drive the transmission block to rotate through the blades, and the hollow tube can be driven to rotate through the rotation of the transmission block by virtue of the first sealing bearing, so that the hollow tube can be driven to rotate, and the fan plates are driven to rotate, the rotation through the sector can stir flue gas and atomizing urea, makes urea solution and flue gas can carry out abundant mixture to the flue gas can slow down the rising speed of flue gas when promoting the blade, thereby is favorable to the intensive mixing of flue gas and urea.
As preferred technical scheme, be equipped with the cavity in the fixed block, the feed liquor hole has been seted up to one side that the fixed block is close to the transfer line, the guide board has been close to one side of transfer line and has been seted up two through-holes, the transfer line runs through two through-holes and is connected with the feed liquor hole, the intercommunicating pore has been seted up on the lateral wall of hollow tube, be equipped with the feed liquor chamber in the flabellum, the mounting hole has been seted up on the flabellum, fixed mounting has atomizer in the mounting hole, and urea solution in the transfer line enters into the hollow tube through the cavity in, can enter into the feed liquor chamber through the intercommunicating pore again to be convenient for atomizer sprays urea solution along with the synchronous rotation of flabellum.
As a preferred technical scheme, six atomizing spray heads on the fan plate are arranged along the anticlockwise direction, so that acting force generated when the atomizing spray heads spray urea solution is conveniently utilized, the fan plate is facilitated to rotate, the atomizing spray heads incline downwards, the sprayed urea solution and air flow can be in opposite impact, and the urea solution and the air flow can be fully reacted.
As a preferred technical scheme, the turning assembly comprises a linkage block, a fin plate, a transmission rod, a linkage rod, a lower push plate and an upper push plate;
the reaction box is characterized in that a linkage block is arranged in the cavity, a fin plate is fixedly arranged on the side wall of the linkage block along the circumferential direction, a transmission rod is fixedly connected to one side of the linkage block, which is far away from the first rotating hole, a second rotating hole is formed in the cavity wall of the cavity, which is far away from the first rotating hole, a second sealing bearing is fixedly arranged in the second rotating hole, the transmission rod penetrates through the second sealing bearing, an opening is formed in one side, which is close to the transmission rod, of the reaction box, the transmission rod penetrates through the opening and extends into the reaction cavity, a lower push plate is fixedly arranged on the transmission rod, the lower push plate is positioned in the reaction cavity, the cavity wall of the reaction cavity, which is far away from the opening, is connected with a linkage rod through a transmission assembly, an upper push plate is fixedly arranged on the linkage rod, and the transmission rod can rotate in the second rotating hole under the action of the second sealing bearing, so that the fin plate can push the linkage block to rotate by utilizing the fluidity of the urea solution, thereby drive the catalyst of push pedal to the reaction chamber bottom through the transfer line and turn, simultaneously, the transfer line can drive the gangbar through drive assembly and rotate to make the push pedal also can turn the catalyst, be favorable to the even reaction with the flue gas of catalyst in the reaction chamber.
As a preferred technical scheme, the lower push plate and the upper push plate are quarter-circle column plates, and arc-shaped surfaces of the lower push plate and the upper push plate are along the rotating direction, so that the lower push plate and the upper push plate can smoothly turn the catalyst up and down by using the rotating acting force.
As a preferred technical scheme, the transmission assembly comprises an upper toothed plate, a lower toothed plate, a transmission sleeve, an upper fixed bearing, a lower fixed bearing and transmission teeth;
the reaction chamber is provided with a through hole on the wall far away from the opening, a rotating bearing is fixedly arranged in the through hole, a linkage rod is fixedly arranged in the rotating bearing, the linkage rod can conveniently rotate, an upper toothed plate is fixedly arranged at the end part of the linkage rod far away from the through hole, a lower toothed plate is fixedly arranged at the end part of the transmission rod close to the linkage rod, the upper toothed plate is connected with the lower toothed plate through a transmission sleeve, an upper fixed bearing and a lower fixed bearing are fixedly arranged in the transmission sleeve, the upper toothed plate is fixedly arranged in the upper fixed bearing, the lower toothed plate is fixedly arranged in the lower fixed bearing, a transmission tooth is rotatably arranged in the transmission sleeve, the upper part of the transmission tooth is matched with the upper toothed plate, the lower part of the transmission tooth is matched with the lower toothed plate, and the rotation of the upper toothed plate and the lower toothed plate can not be influenced when the upper toothed plate and the lower toothed plate can be fixed through the upper fixed bearing and the lower fixed bearing, when the transfer line drives the pinion rack and rotates down, because the driving tooth can rotate to can drive the pinion rack down through the driving tooth and rotate, make the pinion rack down drive the push pedal of gangbar and do the direction motion with push pedal down, be favorable to turning the catalyst on upper strata to the bottom, make that the catalyst can be even contact with the flue gas.
As preferred technical scheme, the tooth's socket of going up pinion rack and pinion rack down all is located the one side that is close to the driving tooth, and the driving tooth is located between pinion rack and the pinion rack down, is convenient for make pinion rack drive the pinion rack down and rotate through the driving tooth.
Compared with the prior art, the invention has the following beneficial effects:
1. be provided with SNCR subassembly and SCR subassembly, through starting the suction pump, make the pipette follow urea box internal suction urea solution, the rethread transfer line sprays urea solution in the treatment chamber through atomizer, can enlarge the area of contact of solution and air through atomizer, improve the denitration effect to the flue gas, enter into the reaction chamber of reaction box through the inlet port when the flue gas, can take place the oxynitride of reaction and get rid of the flue gas with the catalyst, thereby can avoid the SNCR subassembly not handled the phenomenon that is discharged promptly when reaction temperature does not reach standard and take place, can carry out the secondary denitration to the flue gas after the SNCR subassembly purifies again, and then can improve whole device denitration effect.
2. Be provided with and mix the subassembly, when the flue gas passes through the intake pipe and gets into to the treatment chamber in, the flue gas that rises can drive the transmission piece through the blade and rotate, because can make the hollow tube at a commentaries on classics hole internal rotation through first sealed bearing, thereby the rotation through the transmission piece can drive the hollow tube and rotate, and then it rotates to drive the flabellum, rotation through the flabellum can stir flue gas and atomizing urea, make urea solution and flue gas can carry out abundant mixture, and the flue gas can slow down the rising speed of flue gas when promoting the blade, thereby be favorable to the intensive mixing of flue gas and urea.
3. Be provided with the subassembly drive assembly that turns, because the transfer line can be under the effect of second seal bearing two internal rotations in commentaries on classics hole, mobility through utilizing urea solution can let the fin promote the interlock piece and rotate, thereby drive down the catalyst of push pedal to the reaction chamber bottom through the transfer line and turn, meanwhile, when the transfer line drives down the pinion rack and rotates, because the driving tooth can rotate, thereby can drive down the pinion rack through the driving tooth and rotate, make down the last push pedal that the pinion rack drove the gangbar and do the direction motion with lower push pedal, be favorable to turning the catalyst on upper strata to the bottom, make the catalyst can be even contact with the flue gas.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a front view cut-away schematic of the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at a;
FIG. 4 is an enlarged schematic view of FIG. 2 at b;
FIG. 5 is a schematic view of the construction of the whipping assembly of the present invention;
fig. 6 is a schematic view of the flip assembly of the present invention.
In the figure: 1. a processing body; 2. a processing chamber; 3. an air inlet pipe; 4. an exhaust port; 5. an exhaust pipe; 11. a guide plate;
6. an SNCR component; 601. a urea tank; 602. a suction pump; 603. a pipette; 604. a transfusion tube; 605. a liquid suction hole; 606. punching a first hole; 607. an atomizing spray head;
7. an SCR assembly; 701. a reaction box; 702. a reaction chamber; 703. an air inlet; 704. an air outlet;
8. an agitation assembly; 801. fixing the rod; 802. a fixed block; 803. rotating the first hole; 804. a first sealed bearing; 805. a hollow tube; 806. a transmission block; 807. a blade; 808. a fan plate; 809. A cavity; 810. a liquid inlet hole; 811. punching a second hole; 812. a communicating hole; 813. a liquid inlet cavity; 814. mounting holes;
9. a flipping component; 901. a linkage block; 902. a fin; 903. a transmission rod; 904. rotating the hole II; 905. a linkage rod; 906. a lower push plate; 907. a push plate is arranged; 908. a second sealed bearing; 909. opening a hole;
10. a transmission assembly; 1001. a through hole; 1002. a rotating bearing; 1003. an upper toothed plate; 1004. A lower toothed plate; 1005. a transmission sleeve; 1006. an upper fixed bearing; 1007. a lower fixed bearing; 1008. and a transmission gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The embodiment is as follows: as shown in fig. 1 to 6, the present invention provides the following technical solutions: an SNCR and SCR based combined denitration device comprises a processing main body 1, a processing chamber 2, an air inlet pipe 3, an air outlet 4, an air outlet pipe 5, an SNCR assembly 6, an SCR assembly 7, a stirring assembly 8 and a turning assembly 9;
be equipped with the treatment chamber 2 in the treatment main part 1, fixed mounting has guide plate 11 in the treatment chamber 2, the bottom input of treatment main part 1 is connected with intake pipe 3, gas vent 4 has been seted up at the top of treatment main part 1, gas after the denitration is conveniently carried to 4 in-connections in the gas vent 5 through blast pipe 5, be provided with SNCR subassembly 6 and SCR subassembly 7 on the treatment main part 1, be provided with on the SNCR subassembly 6 and stir subassembly 8, be provided with on the SCR subassembly 7 and turn subassembly 9, SCR subassembly 7 is located SNCR subassembly 6's top, and the phenomenon that can also avoid the flue gas not handled and be discharged takes place when improving flue gas denitration effect through SNCR subassembly 6 and SCR subassembly 7 matched with the use.
As shown in fig. 1-2, the SNCR assembly 6 includes a urea tank 601, a suction pump 602, a pipette 603, a liquid delivery tube 604, and an atomizer 607;
fixed mounting has urea case 601 and suction pump 602 on the processing main part 1, be connected with pipette 603 and transfer line 604 on the input of suction pump 602, the last imbibition hole 605 of having seted up of urea case 601, pipette 603 runs through imbibition hole 605 and alternates in urea case 601, processing main part 1 is last to have seted up a perforation 606, transfer line 604 runs through perforation 606 and is connected with atomizer 607 through stirring subassembly 8, atomizer 607 is located treatment chamber 2, through starting suction pump 602, makes pipette 603 inhale urea solution from urea case 601, and the rethread transfer line 604 sprays urea solution in treatment chamber 2 through atomizer 607, can enlarge the area of contact of solution and air through atomizer 607, improves the denitration effect to the flue gas.
As shown in fig. 2, the SCR component 7 includes a reaction box 701, a reaction chamber 702, air inlets 703 and air outlets 704, the reaction box 701 is fixedly installed in the processing chamber 2, the reaction box 701 is located above the atomizer 607, the reaction chamber 702 is installed in the reaction box 701, a catalyst is filled in the reaction chamber 702, a plurality of air inlets 703 are opened at the bottom of the reaction box 701, a plurality of air outlets 704 are opened at the top of the reaction box 701, the aperture of each of the air inlets 703 and the air outlets 704 is smaller than the diameter of a catalyst particle, when flue gas enters the reaction chamber 702 of the reaction box 701 through the air inlets 703, oxynitride of the flue gas can be removed by reaction with the catalyst, so that the phenomenon that the flue gas is not processed and discharged when the reaction temperature of the SNCR component 6 is not reached can be avoided, and the flue gas purified by the SNCR component 6 can be denitrated for a second time, and then can improve whole device denitration effect.
As shown in fig. 2-3 and 5, the stirring assembly 8 comprises a fixing rod 801, a fixing block 802, a first rotating hole 803, a first sealing bearing 804, a hollow tube 805, a transmission block 806, a blade 807 and a fan plate 808;
the stirring assembly 8 is located below the guide plate 11, a fixing rod 801 is fixedly installed on the guide plate 11, a fixing block 802 is fixedly installed at one end, far away from the guide plate 11, of the fixing rod 801, a first rotating hole 803 is formed in the bottom of the fixing block 802, a first sealing bearing 804 is fixedly installed in the first rotating hole 803, a hollow pipe 805 is fixedly installed in the first sealing bearing 804, six fan plates 808 are fixedly installed on the side wall of the hollow pipe 805 along the circumferential direction, a transmission block 806 is fixedly installed at one end, far away from the fixing block 802, of the hollow pipe 805, blades 807 are fixedly installed on the side wall of the transmission block 806 along the circumferential direction, when flue gas enters the treatment chamber 2 through the gas inlet pipe 3, the rising flue gas can drive the transmission block 806 to rotate through the blades 807, and the hollow pipe 805 can rotate in the first rotating hole 803 through the first sealing bearing 804, thereby rotation through drive block 806 can drive the hollow tube 805 and rotate, and then drive fan plate 808 and rotate, can stir flue gas and atomizing urea through the rotation of fan plate 808, makes urea solution and flue gas can carry out abundant mixture to the flue gas can slow down the rising speed of flue gas when promoting blade 807, thereby is favorable to the intensive mixing of flue gas and urea.
A cavity 809 is arranged in the fixed block 802, a liquid inlet hole 810 is formed in one side, close to the infusion tube 604, of the fixed block 802, a second through hole 811 is formed in one side, close to the infusion tube 604, of the guide plate 11, the infusion tube 604 penetrates through the second through hole 811 and is connected with the liquid inlet hole 810, a communicating hole 812 is formed in the side wall of the hollow tube 805, a liquid inlet cavity 813 is formed in the fan plate 808, a mounting hole 814 is formed in the fan plate 808, an atomizing spray head 607 is fixedly mounted in the mounting hole 814, urea solution in the infusion tube 604 enters the hollow tube 805 through the cavity 809 and can enter the liquid inlet cavity 813 through the communicating hole 812, and therefore the atomizing spray head 607 can spray urea solution when synchronously rotating along with the fan plate 808.
Six atomizer 607 on the fan board 808 is arranged along anticlockwise, and the effort that produces when utilizing atomizer 607 to spray urea solution is convenient for, is favorable to promoting fan board 808's rotation, and atomizer 607 downward sloping, can make the urea solution who sprays take place to dash with the air current to be favorable to urea solution and gas to carry out the abundant reaction.
As shown in fig. 2-3 and 6, the flipping component 9 includes a linkage 901, a fin 902, a transmission rod 903, a linkage rod 905, a lower push plate 906, and an upper push plate 907;
a linkage block 901 is arranged in the cavity 809, a fin 902 is fixedly arranged on the side wall of the linkage block 901 along the circumferential direction, a transmission rod 903 is fixedly connected to one side of the linkage block 901 far away from the first rotating hole 803, a second rotating hole 904 is arranged on the cavity wall of the cavity 809 far away from the first rotating hole 803, a second sealed bearing 908 is fixedly arranged in the second rotating hole 904, the transmission rod 903 penetrates through the second sealed bearing 908, an opening 909 is arranged on one side of the reaction box 701 close to the transmission rod 903, the transmission rod 903 penetrates through the opening 909 and extends into the reaction cavity 702, a lower push plate 906 is fixedly arranged on the transmission rod 903, the lower push plate 906 is positioned in the reaction cavity 702, the cavity wall of the reaction cavity 702 far away from the opening 909 is connected with a linkage rod 905 through a transmission component 10, an upper push plate 907 is fixedly arranged on the linkage rod 905, and the transmission rod 903 can rotate in the second rotating hole 904 under the action of the second sealed bearing 908, the fin 902 can push the linkage block 901 to rotate by utilizing the fluidity of the urea solution, so that the lower push plate 906 is driven by the transmission rod 903 to turn the catalyst at the bottom of the reaction cavity 702, meanwhile, the transmission rod 903 can drive the linkage rod 905 to rotate through the transmission component 10, so that the upper push plate 907 can also turn the catalyst, and the uniform reaction of the catalyst in the reaction cavity 702 and the flue gas is facilitated.
The lower push plate 906 and the upper push plate 907 are both quarter-circle cylindrical plates, and arc-shaped surfaces of the lower push plate 906 and the upper push plate 907 are along the rotating direction, so that the lower push plate 906 and the upper push plate 907 can turn the catalyst up and down smoothly by using a rotating acting force.
As shown in fig. 4, the transmission assembly 10 includes an upper toothed plate 1003, a lower toothed plate 1004, a transmission sleeve 1005, an upper fixed bearing 1006, a lower fixed bearing 1007, and a transmission gear 1008;
the reaction chamber 702 is provided with a through hole 1001 on a chamber wall far away from the opening 909, a rotating bearing 1002 is fixedly mounted in the through hole 1001, a linkage rod 905 is fixedly mounted in the rotating bearing 1002, the linkage rod 905 rotates conveniently, an upper toothed plate 1003 is fixedly mounted at an end part of the linkage rod 905 far away from the through hole 1001, a lower toothed plate 1004 is fixedly mounted at an end part of the transmission rod 903 close to the linkage rod 905, the upper toothed plate 1003 and the lower toothed plate 1004 are connected through a transmission sleeve 1005, an upper fixed bearing 1006 and a lower fixed bearing 1007 are fixedly mounted in the transmission sleeve 1005, the upper toothed plate 1003 and the lower toothed plate 1007 are fixedly mounted in the upper fixed bearing 1006, the lower toothed plate 1004 is fixedly mounted in the lower fixed bearing 1007, a transmission tooth 1008 is rotatably mounted in the transmission sleeve 1005, the upper part of the transmission tooth 1008 is matched with the upper toothed plate 1003, the lower part of the transmission tooth 1008 is matched with the lower toothed plate 1004, and the upper toothed plate 1003 and the lower toothed plate 1004 can be fixed by the upper fixed bearing 1006 and the lower fixed bearing 1006 Simultaneously, can not influence its rotation, when the transfer line 903 drives lower rack 1004 and rotates, because driving tooth 1008 can rotate to can drive lower rack 1004 through driving tooth 1008 and rotate, make lower rack 1004 drive push up plate 907 and lower push down plate 906 of gangbar 905 and make the direction motion, be favorable to turning the catalyst of upper strata to the bottom, make that the catalyst can be even contact with the flue gas.
The tooth grooves of the upper toothed plate 1003 and the lower toothed plate 1004 are located on one side close to the transmission teeth 1008, and the transmission teeth 1008 are located between the upper toothed plate 1003 and the lower toothed plate 1004, so that the lower toothed plate 1004 can drive the upper toothed plate 1003 to rotate through the transmission teeth 1008.
The working principle of the invention is as follows: firstly, through starting suction pump 602, make pipette 603 inhale urea solution from urea case 601 internal, the rethread transfer line 604 sprays urea solution in treatment chamber 2 through atomizer 607, can enlarge the area of contact of solution and air through atomizer 607, improve the denitration effect to the flue gas, in the flue gas enters into reaction chamber 702 of reaction box 701 through inlet port 703, can take place the oxynitride of reaction and get rid of the flue gas with the catalyst, thereby can avoid SNCR subassembly 6 not handled the phenomenon emergence that is discharged when reaction temperature does not reach standard flue gas, can carry out the secondary denitration to the flue gas after the purification of SNCR subassembly 6 again, and then can improve whole device denitration effect.
Then, when the flue gas enters into the treatment chamber 2 through the intake pipe 3, the flue gas that rises can drive the transmission block 806 through blade 807 and rotate, because can make the hollow tube 805 at a commentaries on classics hole 803 internal rotation through first sealed bearing 804, thereby the rotation through transmission block 806 can drive the hollow tube 805 and rotate, and then drive fan board 808 and rotate, rotation through fan board 808 can stir flue gas and atomizing urea, make urea solution and flue gas can carry out abundant mixture, and the flue gas can slow down the rising speed of flue gas when promoting blade 807, thereby be favorable to the intensive mixing of flue gas and urea.
Finally, the transmission assembly 10 of the turning assembly 9 is utilized, because the transmission rod 903 can rotate in the second rotating hole 904 under the action of the second sealing bearing 908, the fin 902 can push the linkage block 901 to rotate by utilizing the fluidity of the urea solution, so that the transmission rod 903 drives the lower push plate 906 to turn the catalyst at the bottom of the reaction cavity 702, meanwhile, when the transmission rod 903 drives the lower toothed plate 1004 to rotate, because the transmission teeth 1008 can rotate, the lower toothed plate 1004 can be driven to rotate by the transmission teeth 1008, so that the lower toothed plate 1004 drives the upper push plate 907 and the lower push plate 906 of the linkage rod 905 to move in the direction, the catalyst at the upper layer can be turned to the bottom, and the catalyst can be uniformly contacted with the flue gas.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a unite denitrification facility based on SNCR and SCR which characterized in that: the SNCR and SCR based combined denitration device comprises a treatment main body (1), a treatment chamber (2), an air inlet pipe (3), an exhaust port (4), an exhaust pipe (5), an SNCR component (6), an SCR component (7), a stirring component (8) and a turning component (9);
be equipped with treatment chamber (2) in handling main part (1), fixed mounting has guide board (11) in treatment chamber (2), the bottom input of handling main part (1) is connected with intake pipe (3), gas vent (4) have been seted up at the top of handling main part (1), gas vent (4) in-connection has blast pipe (5), be provided with SNCR subassembly (6) and SCR subassembly (7) on handling main part (1), be provided with on SNCR subassembly (6) and stir subassembly (8), be provided with on SCR subassembly (7) and turn subassembly (9), SCR subassembly (7) are located the top of SNCR subassembly (6).
2. The SNCR and SCR based combined denitration device according to claim 1, wherein: the SNCR component (6) comprises a urea box (601), a suction pump (602), a liquid suction pipe (603), a liquid conveying pipe (604) and an atomizing spray head (607);
fixed mounting has urea case (601) and suction pump (602) on processing main part (1), be connected with pipette (603) and transfer line (604) on the input of suction pump (602), the output respectively, imbibition hole (605) have been seted up on urea case (601), pipette (603) run through imbibition hole (605) and alternate in urea case (601), processing main part (1) is last to have seted up perforation (606), transfer line (604) run through perforation (606) and are connected with atomizer (607) through stirring subassembly (8), atomizer (607) are located treatment chamber (2).
3. The SNCR and SCR based combined denitration device according to claim 1, wherein: SCR subassembly (7) is including reaction box (701), reaction chamber (702), inlet port (703), venthole (704), fixed mounting has reaction box (701) in process chamber (2), reaction box (701) are located the top of atomizer (607), be equipped with reaction chamber (702) in reaction box (701), reaction chamber (702) intussuseption is filled with the catalyst, a plurality of inlet ports (703) have been seted up to the bottom of reaction box (701), and a plurality of ventholes (704) have been seted up to the top of reaction box (701), the aperture of inlet port (703) and venthole (704) all is less than the diameter of catalyst granule.
4. The SNCR and SCR based combined denitration device according to claim 2, wherein: the stirring assembly (8) comprises a fixing rod (801), a fixing block (802), a first rotating hole (803), a first sealing bearing (804), a hollow pipe (805), a transmission block (806), blades (807) and a fan plate (808);
mix subassembly (8) and be located the below of guide board (11), fixed mounting has dead lever (801) on guide board (11), the one end fixed mounting that guide board (11) were kept away from in dead lever (801) has fixed block (802), the bottom of fixed block (802) has been seted up and has been changeed hole one (803), it has first sealed bearing (804) to change hole one (803) internal fixation, fixed mounting has hollow tube (805) in first sealed bearing (804), the lateral wall of hollow tube (805) has six fan boards (808) along circumference fixed mounting, the one end fixed mounting that fixed block (802) were kept away from in hollow tube (805) has driving block (806), the lateral wall of driving block (806) has blade (807) along circumference fixed mounting.
5. The SNCR and SCR based combined denitration device according to claim 4, wherein: be equipped with cavity (809) in fixed block (802), feed liquor hole (810) have been seted up to one side that fixed block (802) are close to transfer line (604), perforation two (811) have been seted up to one side that guide board (11) are close to transfer line (604), transfer line (604) run through perforation two (811) and are connected with feed liquor hole (810), intercommunicating pore (812) have been seted up on the lateral wall of hollow tube (805), be equipped with feed liquor chamber (813) in fan board (808), mounting hole (814) have been seted up on fan board (808), fixed mounting has atomizer (607) in mounting hole (814).
6. The SNCR and SCR based combined denitration device according to claim 5, wherein: the six atomizing spray heads (607) on the fan plate (808) are arranged along the anticlockwise direction, and the atomizing spray heads (607) are inclined downwards.
7. The SNCR and SCR based combined denitration device according to claim 1, wherein: the turning assembly (9) comprises a linkage block (901), a fin plate (902), a transmission rod (903), a linkage rod (905), a lower push plate (906) and an upper push plate (907);
a linkage block (901) is arranged in the cavity (809), a fin plate (902) is fixedly arranged on the side wall of the linkage block (901) along the circumferential direction, a transmission rod (903) is fixedly connected to one side, away from the first rotating hole (803), of the linkage block (901), a second rotating hole (904) is formed in the cavity wall, away from the first rotating hole (803), of the cavity (809), a second sealing bearing (908) is fixedly arranged in the second rotating hole (904), the transmission rod (903) penetrates through the second sealing bearing (908), an opening hole (909) is formed in one side, close to the transmission rod (903), of the reaction box (701), the transmission rod (903) penetrates through the opening hole (909) and extends into the reaction cavity (702), a lower push plate (906) is fixedly arranged on the transmission rod (903), the lower push plate (906) is located in the reaction cavity (702), and the cavity wall, away from the opening hole (909), of the reaction cavity (702) is connected with a linkage rod (905) through a transmission component (10), an upper push plate (907) is fixedly arranged on the linkage rod (905).
8. The SNCR and SCR based combined denitration device of claim 7, wherein: the lower push plate (906) and the upper push plate (907) are quarter-circle cylindrical plates, and arc profiles of the lower push plate (906) and the upper push plate (907) are along the rotating direction.
9. The SNCR and SCR based combined denitration device of claim 7, wherein: the transmission assembly (10) comprises an upper toothed plate (1003), a lower toothed plate (1004), a transmission sleeve (1005), an upper fixed bearing (1006), a lower fixed bearing (1007) and transmission teeth (1008);
through-hole (1001) has been seted up on the cavity wall of trompil (909) is kept away from in reaction chamber (702), fixed mounting has swivel bearing (1002) in through-hole (1001), fixed mounting has gangbar (905) in swivel bearing (1002), the tip fixed mounting that through-hole (1001) was kept away from in gangbar (905) has last pinion rack (1003), the tip fixed mounting that the transfer line (903) is close to gangbar (905) has lower pinion rack (1004), it is connected through driving sleeve (1005) with lower pinion rack (1004) to go up pinion rack (1003), fixed mounting has last fixed bearing (1006) and lower fixed bearing (1007) in driving sleeve (1005), go up pinion rack (1003) fixed mounting in last fixed bearing (1006), pinion rack (1004) fixed mounting is under in fixed bearing (1007), driving sleeve (1005) internal rotation installs driving tooth (1008), the upper part of the transmission gear (1008) is matched with the upper toothed plate (1003), and the lower part of the transmission gear (1008) is matched with the lower toothed plate (1004).
10. The SNCR and SCR-based combined denitration device according to claim 9, wherein: the tooth grooves of the upper toothed plate (1003) and the lower toothed plate (1004) are located on one side close to the transmission teeth (1008), and the transmission teeth (1008) are located between the upper toothed plate (1003) and the lower toothed plate (1004).
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