CN108744968A - A kind of coal steam-electric plant smoke treatment process - Google Patents
A kind of coal steam-electric plant smoke treatment process Download PDFInfo
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- CN108744968A CN108744968A CN201810602211.0A CN201810602211A CN108744968A CN 108744968 A CN108744968 A CN 108744968A CN 201810602211 A CN201810602211 A CN 201810602211A CN 108744968 A CN108744968 A CN 108744968A
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- elastic helix
- pipe
- ammonia
- helix pipe
- mounting blocks
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000003245 coal Substances 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 title claims abstract description 15
- 239000000779 smoke Substances 0.000 title claims abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 94
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003546 flue gas Substances 0.000 claims abstract description 47
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 38
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 230000008859 change Effects 0.000 claims abstract description 25
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract description 7
- 239000002912 waste gas Substances 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 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
- B01D53/90—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
- B01D53/74—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
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (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)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention belongs to technical field of waste gas treatment, specifically a kind of coal steam-electric plant smoke treatment process, the technique uses SCR denitration device, which includes flue gas injection pipe, ammonia injection pipe, blending tank, ammonia-gas spraying device and reactor；Ammonia-gas spraying device includes motor, nut, change, elastic helix pipe and mounting blocks；Motor is mounted at the top of blending tank, is rotatablely installed nut on machine shaft, nut outer ring rotating is installed with change, and elastic helix pipe one end is connected in change；The elastic helix pipe other end is rotatably installed on mounting blocks；Mounting blocks are connected on mixing top tank structure, and ammonia injection pipe is equipped on the outside of the blending tank of mounting blocks side；Ammonia injection pipe is connected with elastic helix pipe, and one group of fumarole is arranged on elastic helix pipe.The present invention drives change to move up and down by motor, and elastic helix pipe is become into a cone shape under the traction of change by flat shape, the position of ammonia is sprayed by transformation so that ammonia and flue gas are sufficiently mixed.
Description
Technical field
The invention belongs to technical field of waste gas treatment, specifically a kind of coal steam-electric plant smoke treatment process.
Background technology
A large amount of NOx and SOx is contained when burning coal in thermal power plant in flue gas, and SOx and NOx are shadows in atmosphere pollution
Ring larger pollutant, photochemical fog, acid rain can be formed, destroy ozone layer, even result in serious greenhouse effects, to human body,
Environment and the ecosystem have high risks.Therefore, the purification of flue gas to preserve the ecological environment and the sustainable development in China have
It is significant.
Currently, traditional denitrating flue gas mainly uses selective catalytic reduction (SCR) and selective non-catalytic reduction method
(SNCR).Wherein, the SCR technology being widely adopted is a kind of effective ways for administering NOx emission from tail gas, and reducing agent has
NOx, is typically reduced to harmless N2 by urea, ammonium hydroxide and pure ammonia under the effect of the catalyst using NH3 as reducing agent, from
And remove the NOx in flue gas.
Also occur the technical solution of some denitrating flue gas in the prior art, such as application No. is 2015107683386 one
Chinese patent discloses a kind of double-rotation type SCR denitration method and its device, and first and the is provided with along denitrating tower ontology
Two eddy flows are catalyzed reaction chamber；Flue gas is passed through pipeline and is located at tower body upper side wall；The inner peripheral surface and first of pipeline is passed through along flue gas
Inner peripheral surface at the top of eddy flow catalysis reaction chamber is respectively disposed with multiple vortex atomizing nozzles；It is passed through pipeline when flue gas enters flue gas
When, with vortex atomizing nozzle injection ammonia mutually intervolve persorption close, along the first eddy flow be catalyzed reaction chamber circumference from top to bottom with
The mode spiral of the circle of contact is sunk, and under the action of cyclone, but along the second eddy flow be catalyzed the circumference of reaction chamber from bottom to top with
The mode spiral of the circle of contact.
The denitrating technique of the technical solution can be such that ammonia and flue gas is sufficiently mixed, but the program is sprayed by swirling flow atomizing
Mouth sprays ammonia, and the ammonia concentration that this allows for top is higher, causes the undercompounding of ammonia and flue gas, influences subsequent go back
Original reaction so that the treatment effeciency of the technique is relatively low.
Invention content
In order to make up for the deficiencies of the prior art, a kind of coal steam-electric plant smoke treatment process proposed by the present invention, the technique use
SCR denitration device, the SCR denitration device is by being arranged ammonia-gas spraying device, and elastic helix pipe is under the traction of the change of ammonia-gas spraying device
Become into a cone shape by flat shape, the position of ammonia is sprayed by transformation so that ammonia and flue gas are sufficiently mixed.
The technical solution adopted by the present invention to solve the technical problems is：A kind of coal steam-electric plant smoke processing of the present invention
Technique, the technique include the following steps：
Step 1：The flue gas that thermal power plant generates is passed through in cleaner, the solid particle in flue gas is removed；
Step 2：By denitration in the flue gas input SCR denitration device after dedusting in step 1；
Step 3：By desulfurization in the flue gas input desulfurizer after denitration in step 2, clean flue gas is obtained；
Step 4：Clean flue gas in step 3 is discharged into air；
Wherein, the SCR denitration device includes flue gas injection pipe, ammonia injection pipe, blending tank, ammonia-gas spraying device and reaction
Device；The blending tank side is equipped with ammonia injection pipe, and the blending tank other side is connected to reactor, the reaction by pipeline
Catalyst is equipped in device, the mixing pot bottom is equipped with flue gas injection pipe；The ammonia-gas spraying device is arranged in blending tank；The spray
Ammonia device includes motor, nut, change, elastic helix pipe and mounting blocks；The motor is mounted at the top of blending tank, the motor
Nut is rotatablely installed in shaft, the nut outer ring rotating is installed with change, and elastic helix pipe one end is connected in change
On；The elastic helix pipe other end is rotatably installed on mounting blocks；The mounting blocks are connected on mixing top tank structure, mounting blocks
Ammonia injection pipe is equipped on the outside of the blending tank of side；The ammonia injection pipe is connected with elastic helix pipe, the elastic helix
One group of fumarole is set on pipe.When work, motor driving change moves up and down, and elastic helix pipe is under the traction of change by plane
Shape becomes into a cone shape, the position of ammonia is sprayed by transformation so that ammonia and flue gas are sufficiently mixed.
Preferably, elastic helix pipe one end is rotatably installed in by swivel becket in mounting blocks, swivel becket and mounting blocks
Rotation connection, the articulated one group of rotating bar in outer ring of swivel becket are installed and one group of protrusion are arranged on the circular cavity inner wall of swivel becket,
The rotating bar fitting projection for realizing swivel becket one-way brake；One group of step is set on the inner wall of swivel becket；Described
Circular arc is arranged in rank side；One group of telescopic rod is arranged in the outer ring of the elastic helix pipe end；The telescopic rod can be by step one
It breaks away to the other side.When work, for elastic helix pipe during towing deformation, the elastic helix pipe place of being connected with the mounting block can shape
At torsion, elastic helix pipe can be avoided damaged under the action of torsion by the way that swivel becket is arranged；Meanwhile outside elastic helix pipe
Circle one group of telescopic rod of setting, drives elastic helix tube vibration, can avoid elasticity when telescopic rod slides to the other side from step side
Helix tube attaches particulate dust.
Preferably, elastic helix pipe one end is rotatably installed in mounting blocks, installs the circular cavity of elastic helix pipe
Inner wall is equipped with one group of secter pat, and cambered surface is arranged in the secter pat side, and the secter pat other side is rotatablely installed rotor plate, turns
Movable plate is perpendicular to elastic helix pipe and can be rotated to the cambered surface side of secter pat；The outer ring of the elastic helix pipe end is arranged
One group of telescopic rod；The telescopic rod can be slipped over from secter pat.When work, stretched by being arranged one group in elastic helix pipe outer ring
Contracting bar, while it being equipped with one group of secter pat in the circular cavity inner wall of installation elastic helix pipe, telescopic rod can be from secter pat side
Elastic helix tube vibration is driven when sliding to the other side, elastic helix pipe can be avoided to attach particulate dust；In elastic helix pipe
When revolution, by be arranged rotor plate enable telescopic rod it is gentle cross secter pat.
Preferably, interlayer is equipped in the elastic helix tube wall, be slidably installed elastic webbing in interlayer；The elasticity spiral shell
One end that coil connects mounting blocks is equipped with a loop notch, and the telescopic rod is mounted on from indentation, there on elastic webbing；Gained bullet
Property band be equipped with and the matched through-hole of fumarole.When work, elastic webbing is to elastic helix while telescopic rod squeezes secter pat
Pipe pipe internal projection, and elastic webbing is pulled to extend, the through-hole and fumarole relative dislocation of elastic webbing setting can effectively avoid jet
The blocking in hole.
Preferably, the through-hole side is equipped with and is rotatably installed in ball in fumarole；Intercommunicating pore is equipped in the ball.Work
When making, by pulling elastic webbing, the through-hole and fumarole relative dislocation of elastic webbing setting simultaneously to make to be mounted on ball turn in fumarole
It is dynamic, change the direction that intercommunicating pore is equipped in ball so that ammonia can be mixed adequately with flue gas.
Beneficial effects of the present invention are as follows：
1. the coal steam-electric plant smoke treatment process of the present invention, which uses SCR denitration device, the SCR denitration device to pass through
Ammonia-gas spraying device is set, and elastic helix pipe is become into a cone shape under the traction of the change of ammonia-gas spraying device by flat shape, passes through transformation
Spray the position of ammonia so that ammonia and flue gas are sufficiently mixed.
2. the coal steam-electric plant smoke treatment process of the present invention, which uses SCR denitration device, the SCR denitration device to pass through
One group of telescopic rod is set in the outer ring of elastic helix pipe end, one group of step is set on the inner wall of swivel becket, telescopic rod is from platform
Rank side drives elastic helix tube vibration when sliding to the other side, and elastic helix pipe can be avoided to attach particulate dust.
3. the coal steam-electric plant smoke treatment process of the present invention, which uses SCR denitration device, the SCR denitration device to pass through
Elastic webbing is set in elastic helix tube wall, and elastic webbing is to elastic helix pipe pipe convex while telescopic rod squeezes secter pat
It rises, and elastic webbing is pulled to extend, the through-hole and fumarole relative dislocation of elastic webbing setting can effectively avoid the stifled of fumarole
Plug, and can make to be mounted on ball rotation in fumarole, change the direction that intercommunicating pore is equipped in ball so that ammonia can fill
That divides mixes with flue gas.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the process flow chart of the present invention；
Fig. 2 is the structural schematic diagram of the SCR denitration device of the present invention；
Fig. 3 is the elastic helix pipe of SCR denitration device of the present invention and a kind of connection figure of mounting blocks；
Fig. 4 is the elastic helix pipe of SCR denitration device of the present invention and another connection figure of mounting blocks；
Fig. 5 is A-A sectional views in Fig. 4；
In figure：Flue gas injection pipe 1, ammonia injection pipe 2, blending tank 3, ammonia-gas spraying device 4, motor 41, nut 42, change 43,
Elastic helix pipe 44, mounting blocks 45, fumarole 46, reactor 11, swivel becket 5, rotating bar 51, protrusion 52, step 53, telescopic rod
6, secter pat 7, rotor plate 71, elastic webbing 8, through-hole 81, ball 9.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific implementation mode is closed, the present invention is further explained.
As shown in Figures 1 to 5, a kind of coal steam-electric plant smoke treatment process of the present invention, the technique include the following steps：
Step 1：The flue gas that thermal power plant generates is passed through in cleaner, the solid particle in flue gas is removed；
Step 2：By denitration in the flue gas input SCR denitration device after dedusting in step 1；
Step 3：By desulfurization in the flue gas input desulfurizer after denitration in step 2, clean flue gas is obtained；
Step 4：Clean flue gas in step 3 is discharged into air；
Wherein, the SCR denitration device includes flue gas injection pipe 1, ammonia injection pipe 2, blending tank 3,4 and of ammonia-gas spraying device
Reactor 11；3 side of the blending tank is equipped with ammonia injection pipe 2, and 3 other side of the blending tank is connected to reactor by pipeline
11, the reactor 11 is interior to be equipped with catalyst, and 3 bottom of the blending tank is equipped with flue gas injection pipe 1；The ammonia-gas spraying device 4 is arranged
In blending tank 3；The ammonia-gas spraying device 4 includes motor 41, nut 42, change 43, elastic helix pipe 44 and mounting blocks 45；It is described
Motor 41 is mounted on 3 top of blending tank, and nut 42,42 outer ring rotating of nut peace are rotatablely installed in 41 shaft of the motor
It is filled with change 43, described 44 one end of elastic helix pipe is connected in change 43；44 other end of the elastic helix pipe rotational installation
On mounting blocks 45；The mounting blocks 45 are connected on 3 inner wall of blending tank, and 3 outside of blending tank of 45 side of mounting blocks is equipped with ammonia
Gas injection pipe 2；The ammonia injection pipe 2 is connected with elastic helix pipe 44, and one group of jet is arranged on the elastic helix pipe 44
Hole 46.When work, motor 41 drives change 43 to move up and down, and elastic helix pipe 44 is become under the traction of change 43 by flat shape
Into a cone shape, the position of ammonia is sprayed by transformation so that ammonia and flue gas are sufficiently mixed.
As one embodiment of the present invention, described 44 one end of elastic helix pipe is rotatably installed in peace by swivel becket 5
It fills in block 45, swivel becket 5 is rotatablely connected with mounting blocks 45, the articulated one group of rotating bar 51 in outer ring of swivel becket 5, installs swivel becket
One group of protrusion 52 is set on 5 circular cavity inner wall, 51 fitting projection 52 of the rotating bar for realizing swivel becket 5 unilateral system
It is dynamic；One group of step 53 is set on the inner wall of swivel becket 5；Circular arc is arranged in 53 side of the step；44 end of elastic helix pipe
Outer ring be arranged one group of telescopic rod 6；The telescopic rod 6 can slide to the other side by 53 side of step.When work, elastic helix pipe
44 during towing deformation, and elastic helix pipe 44 can form torsion with 45 junction of mounting blocks, by the way that 5 energy of swivel becket is arranged
Enough avoid elastic helix pipe 44 damaged under the action of torsion；Meanwhile one group of telescopic rod 6 is set in 44 outer ring of elastic helix pipe,
It drives elastic helix pipe 44 to vibrate when telescopic rod 6 slides to the other side from 53 side of step, elastic helix pipe 44 can be avoided to attach
Particulate dust.
As one embodiment of the present invention, described 44 one end of elastic helix pipe is rotatably installed in mounting blocks 45, peace
The circular cavity inner wall of dress elasticity helix tube 44 is equipped with one group of secter pat 7, and cambered surface, the sector is arranged in 7 side of the secter pat
7 other side of block is rotatablely installed rotor plate 71, and rotor plate 71 is perpendicular to elastic helix pipe 44 and can be to the cambered surface one of secter pat 7
Side rotates；One group of telescopic rod 6 is arranged in the outer ring of 44 end of elastic helix pipe；The telescopic rod 6 can be slided from secter pat 7
It crosses.When work, by the way that one group of telescopic rod 6 is arranged in 44 outer ring of elastic helix pipe, while in the circle of installation elastic helix pipe 44
Cavity inner wall is equipped with one group of secter pat 7, and elastic helix pipe 44 is driven when telescopic rod 6 can slide to the other side from 7 side of secter pat
Vibration, can avoid elastic helix pipe 44 from attaching particulate dust；When elastic helix pipe 44 turns round, by the way that rotor plate 71 is arranged
Enable telescopic rod 6 it is gentle cross secter pat 7.
As one embodiment of the present invention, it is equipped with interlayer in 44 tube wall of elastic helix pipe, peace is slided in interlayer
It is filled with elastic webbing 8；One end that the elastic helix pipe 44 connects mounting blocks 45 is equipped with a loop notch, the telescopic rod 6 from
Indentation, there is mounted on elastic webbing 8；Gained elastic webbing 8 is equipped with and 46 matched through-hole 81 of fumarole.When work, telescopic rod
Elastic webbing 8 is to 44 pipe internal projection of elastic helix pipe while 6 extruding secter pat 7, and elastic webbing 8 is pulled to extend, and elastic webbing 8 is arranged
46 relative dislocation of through-hole 81 and fumarole, can effectively avoid the blocking of fumarole 81.
As one embodiment of the present invention, 81 side of the through-hole is equipped with and is rotatably installed in ball 9 in fumarole 46；
Intercommunicating pore is equipped in the ball 9.When work, by pulling elastic webbing 8,46 phase of through-hole 81 and fumarole that elastic webbing 8 is arranged
It is rotated to misplacing and making to be mounted on ball 9 in fumarole 46, changes the direction for being equipped with intercommunicating pore in ball 9 so that ammonia energy
It is enough adequately to be mixed with flue gas.
In use, the motor 41 of SCR denitration device drives change 43 to move up and down, elastic helix pipe 44 is led change 43
Become into a cone shape by flat shape under drawing, the position of ammonia is sprayed by transformation so that ammonia and flue gas are sufficiently mixed.Elastic spiral shell
For coil 44 during towing deformation, elastic helix pipe 44 can form torsion with 45 junction of mounting blocks, be rotated by being arranged
Ring 5 can avoid elastic helix pipe 44 damaged under the action of torsion；Meanwhile being arranged one group in 44 outer ring of elastic helix pipe and stretching
Bar 6 drives elastic helix pipe 44 to vibrate, can avoid elastic helix pipe 44 when telescopic rod 6 slides to the other side from 53 side of step
Attach particulate dust.Correspondingly, can also be by the way that one group of telescopic rod 6 is arranged in 44 outer ring of elastic helix pipe, while installing
The circular cavity inner wall of elastic helix pipe 44 is equipped with one group of secter pat 7, and telescopic rod 6 can slide to the other side from 7 side of secter pat
When drive elastic helix pipe 44 to vibrate, elastic helix pipe 44 can be avoided to attach particulate dust；It is turned round in elastic helix pipe 44
When, by be arranged rotor plate 71 enable telescopic rod 6 gently cross secter pat 7；On this basis, telescopic rod 6 squeezes fan
Elastic webbing 8 is to 44 pipe internal projection of elastic helix pipe while shape block 7, and elastic webbing 8 is pulled to extend, the through-hole that elastic webbing 8 is arranged
81 and 46 relative dislocation of fumarole, the blocking of fumarole 81 can be effectively avoided, and can make to be mounted on ball 9 in fumarole 46
Rotation changes the direction that intercommunicating pore is equipped in ball 9 so that ammonia can be mixed adequately with flue gas.
Although the present invention is illustrated by specific embodiment, it will be appreciated by those skilled in the art that, it is not departing from
In the case of the scope of the invention, various transformation and equivalent substitute can also be carried out to the present invention.In addition, being directed to particular condition or material
Material, can do various modifications, without departing from the scope of the present invention to the present invention.Therefore, the present invention is not limited to disclosed tool
Body embodiment, and should include the whole embodiments fallen within the scope of the appended claims.
Claims (5)
1. a kind of coal steam-electric plant smoke treatment process, which is characterized in that the technique includes the following steps：
Step 1：The flue gas that thermal power plant generates is passed through in cleaner, the solid particle in flue gas is removed；
Step 2：By denitration in the flue gas input SCR denitration device after dedusting in step 1；
Step 3：By desulfurization in the flue gas input desulfurizer after denitration in step 2, clean flue gas is obtained；
Step 4：Clean flue gas in step 3 is discharged into air；
Wherein, the SCR denitration device includes flue gas injection pipe (1), ammonia injection pipe (2), blending tank (3), ammonia-gas spraying device
(4) and reactor (5)；Blending tank (3) side is equipped with ammonia injection pipe (2), and blending tank (3) other side passes through pipeline
It is connected to reactor (5), catalyst is equipped in the reactor (5), blending tank (3) bottom is equipped with flue gas injection pipe (1)；
Ammonia-gas spraying device (4) setting is in blending tank (3)；The ammonia-gas spraying device (4) includes motor (41), nut (42), change
(43), elastic helix pipe (44) and mounting blocks (45)；The motor (41) is mounted at the top of blending tank (3), the motor (41)
Nut (42) is rotatablely installed in shaft, nut (42) outer ring rotating is installed with change (43), the elastic helix pipe
(44) one end is connected in change (43)；Elastic helix pipe (44) other end is rotatably installed on mounting blocks (45)；It is described
Mounting blocks (45) are connected on blending tank (3) inner wall, and ammonia injection pipe is equipped on the outside of the blending tank (3) of mounting blocks (45) side
(2)；The ammonia injection pipe (2) is connected with elastic helix pipe (44), and one group of fumarole is arranged in the elastic helix pipe (44)
(45)。
2. a kind of coal steam-electric plant smoke treatment process according to claim 1, it is characterised in that：The elastic helix pipe (44)
One end is rotatably installed in by swivel becket (5) in mounting blocks (45), and swivel becket (5) is rotatablely connected with mounting blocks (45), swivel becket
(5) one group raised (52), institute is arranged in the circular cavity inner wall of the articulated one group of rotating bar (51) in outer ring, installation swivel becket (5)
Rotating bar (51) fitting projection (52) is stated for realizing the one-way brake of swivel becket (5)；One group of platform is arranged in the inner wall of swivel becket (5)
Rank (53)；Circular arc is arranged in step (53) side；One group of telescopic rod is arranged in the outer ring of elastic helix pipe (44) end
(6)；The telescopic rod (6) can slide to the other side by step (53) side.
3. a kind of coal steam-electric plant smoke treatment process according to claim 1, it is characterised in that：The elastic helix pipe (44)
One end is rotatably installed in mounting blocks (45), and the circular cavity inner wall of installation elastic helix pipe (44) is equipped with one group of secter pat (7),
Cambered surface is arranged in secter pat (7) side, and secter pat (7) other side is rotatablely installed rotor plate (71), rotor plate (71)
It can rotate perpendicular to elastic helix pipe (44) and to the cambered surface side of secter pat (7)；Elastic helix pipe (44) end
One group of telescopic rod (6) is arranged in outer ring；The telescopic rod (6) can slip over from secter pat (7).
4. a kind of coal steam-electric plant smoke treatment process according to claim 3, it is characterised in that：The elastic helix pipe (44)
Interlayer is equipped in tube wall, be slidably installed elastic webbing (8) in interlayer；The one of elastic helix pipe (44) the connection mounting blocks (45)
End is equipped with a loop notch, and the telescopic rod (6) is mounted on from indentation, there on elastic webbing (8)；Gained elastic webbing (8) is equipped with
With fumarole (45) matched through-hole (81).
5. a kind of coal steam-electric plant smoke treatment process according to claim 4, it is characterised in that：Through-hole (81) side is set
It is rotatably installed in fumarole (45) interior ball (9)；Intercommunicating pore is equipped in the ball (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810602211.0A CN108744968B (en) | 2018-06-12 | 2018-06-12 | Thermal power plant flue gas treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810602211.0A CN108744968B (en) | 2018-06-12 | 2018-06-12 | Thermal power plant flue gas treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108744968A true CN108744968A (en) | 2018-11-06 |
| CN108744968B CN108744968B (en) | 2020-06-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112191096A (en) * | 2020-08-17 | 2021-01-08 | 东南大学 | Ammonia spraying device and ammonia spraying mixing device suitable for SCR denitration |
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| CN112191096B (en) * | 2020-08-17 | 2022-08-12 | 东南大学 | Ammonia spraying device and ammonia spraying mixing device suitable for SCR denitration |
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