CN112999862A - Denitration reactor - Google Patents

Denitration reactor Download PDF

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Publication number
CN112999862A
CN112999862A CN202110196044.6A CN202110196044A CN112999862A CN 112999862 A CN112999862 A CN 112999862A CN 202110196044 A CN202110196044 A CN 202110196044A CN 112999862 A CN112999862 A CN 112999862A
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CN
China
Prior art keywords
flue gas
reactor
pipe
central
parallel
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CN202110196044.6A
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Chinese (zh)
Inventor
钱付平
叶蒙蒙
高艺华
孙婉莹
董伟
鲁进利
韩云龙
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Anhui University of Technology AHUT
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Anhui University of Technology AHUT
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Priority to CN202110196044.6A priority Critical patent/CN112999862A/en
Publication of CN112999862A publication Critical patent/CN112999862A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • 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
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/82—Combinations of dissimilar mixers
    • B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The invention discloses a denitration reactor, which comprises an ammonia injection grid, a static mixer and a flow equalizing spoiler, wherein the ammonia injection grid and the static mixer are arranged in a flue gas inlet pipeline, the static mixer is arranged above the ammonia injection grid, the flow equalizing spoiler is arranged in a reactor main body, the flue gas inlet pipeline is communicated with the reactor main body, the reactor main body is provided with a catalyst layer, and the flow equalizing spoiler is arranged between the catalyst layer and a communication port of the flue gas inlet pipeline and the reactor main body; according to the invention, the flow equalizing and disturbing device is arranged, so that the flue gas with uneven temperature is divided into a plurality of strands before entering the catalyst layer, and the sufficient disturbance and the staggered heat exchange are carried out, so that the temperature and the speed of the flue gas are distributed uniformly.

Description

Denitration reactor
Technical Field
The invention relates to the technical field of denitration, and particularly relates to a denitration reactor.
Background
NOxThe emission into the atmosphere causes serious atmospheric pollution, so that the flue gas denitration becomes one of the most important atmospheric pollution control technologies, and becomes a necessary measure for industrial enterprises to reach the environmental standard. The Selective Catalytic Reduction (SCR) is a denitration technique in which a reducing agent (ammonia) and NOx in flue gas generate harmless nitrogen and water under the action of a catalyst. The SCR technology is widely applied to flue gas denitration in the coke oven industry due to the advantages of mature technology, low ammonia escape rate, high denitration efficiency, no secondary pollution and the like.
Flue gas enters the SCR denitration reactor from a flue gas inlet and is mixed with hot air generated by a hot air pipe, mixed gas flows through an ammonia spraying grid, ammonia is sprayed from an ammonia spraying opening, the mixed gas flows to the reactor main body through an ascending flue and a horizontal flue, and denitration reaction is carried out on a catalyst layer. In the existing denitration reactor, the flue gas has the conditions of non-uniform speed, non-uniform temperature and the like when entering a catalyst layer, which can cause a plurality of problems, wherein firstly, the dependence of the catalyst activity on the temperature is very large, SO the too low or too high temperature can influence the reaction rate, and secondly, when the temperature is too low, SO is generated2Oxidation product SO of3Can be mixed with H in flue gas2O and NH3Sulfuric acid and ammonium bisulfate are generated by reaction to cause catalyst deactivation and corrosion, and the excessive flue gas velocity causes the abrasion of a catalyst layer, thereby reducing the operation effect of the SCR denitration reactor.
In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the invention adopts the technical scheme that the denitration reactor comprises an ammonia injection grid, a static mixer and a flow equalizing spoiler, wherein the ammonia injection grid and the static mixer are arranged in a flue gas inlet pipeline, the static mixer is arranged above the ammonia injection grid, the flow equalizing spoiler is arranged in a reactor main body, the flue gas inlet pipeline is communicated with the reactor main body, the reactor main body is provided with a catalyst layer, and the flow equalizing spoiler is arranged between the catalyst layer and a communication port of the flue gas inlet pipeline and the reactor main body.
Preferably, the ammonia injection grid comprises a main pipe and nozzles, the nozzles are arranged on two sides of the main pipe, the nozzles comprise parallel pipes and vertical pipes, the vertical pipes are communicated with the main pipe through the parallel pipes, the extending direction of the vertical pipes is parallel to the flowing direction of incoming smoke, and a first air outlet and a second air outlet are respectively arranged at two ends of each vertical pipe.
Preferably, the extending direction of the main pipe is perpendicular to the flowing direction of the incoming smoke, the extending direction of the parallel pipe is perpendicular to both the flowing direction of the incoming smoke and the extending direction of the main pipe, and the extending direction of the vertical pipe is parallel to the flowing direction of the incoming smoke and perpendicular to the extending direction of the parallel pipe.
Preferably, the nozzles are symmetrically arranged on two sides of the main body pipe, and the nozzles on one side of the main body pipe are arranged at equal intervals.
Preferably, the static mixer comprises a central rod and inclined blades, the central rod is a straight rod piece with the same extending direction as that of the main body pipe, the inclined blades are flat plate pieces extending horizontally outwards from two sides of the central rod, and a plurality of inclined blades are arranged on two sides of the central rod; the inclined blades and the nozzles are arranged in a one-to-one correspondence.
Preferably, the inclined blades comprise a first inclined blade and a second inclined blade, and the inclination directions of the first inclined blade and the second inclined blade are opposite; the first inclined blade and the second inclined blade are respectively arranged on two sides of the central rod at equal intervals.
Preferably, the axis of the main body pipe, the axis of the parallel pipe and the axis of the central rod are all horizontally arranged, and the axis of the vertical pipe is vertically arranged.
Preferably, the flow equalizing spoiler comprises a plurality of coaxially arranged cyclone shells, each cyclone shell is sleeved from inside to outside in sequence, and the rotation directions of the adjacent cyclone shells are opposite.
Preferably, the cyclone shell comprises a central connecting frame and inlet and outlet frames symmetrically arranged at two sides of the central connecting frame, the plane of the central connecting frame and the plane of the inlet and outlet frames are arranged in parallel, and the central connecting frame and the inlet and outlet frames are connected through a plurality of flow guide wall plates to form the cyclone shell with a cylindrical structure; the connecting edges formed by connecting the adjacent flow guide wall plates are spiral and extend from the central connecting frame to the two inlet and outlet frames.
Preferably, the central connection frame of each cyclone casing is arranged on the same plane, and each inlet and outlet frame on one side of the central connection frame is arranged on the same plane.
Compared with the prior art, the invention has the beneficial effects that: the invention sets the nozzle into a three-way structure composed of a parallel pipe perpendicular to the incoming smoke and a vertical pipe parallel to the incoming smoke, the ammonia is sprayed out from the outlets at the upper end and the lower end of the vertical pipe and is parallel to the flow direction of the smoke, the inside of the vertical pipe can be flushed by the smoke, and the ash accumulation and blockage are avoided; 2, the inclined blades are obliquely arranged above the nozzle by the static mixer, so that falling ash can be shielded, the falling ash can automatically slide when accumulated to a certain amount, and meanwhile, the inclined blades have a turbulence effect; 3, the flow equalizing and disturbing device divides the flue gas with uneven temperature into a plurality of strands and fully disturbs and exchanges heat in a staggered manner through a plurality of swirl directions and is sleeved with an integrated swirl shell before the flue gas enters the catalyst layer, so that the temperature and the speed of the flue gas are distributed uniformly.
Drawings
FIG. 1 is a schematic structural view of the denitration reactor;
FIG. 2 is a structural arrangement diagram of the ammonia injection grid and the static mixer;
FIG. 3 is a perspective view of the ammonia injection grid;
FIG. 4 is a structural side view of the ammonia injection grid;
FIG. 5 is a perspective view of the static mixer;
FIG. 6 is a structural top view of the flow equalizing spoiler;
FIG. 7 is a perspective view of the flow spoiler;
fig. 8 is a perspective view of the cyclone casing.
The figures in the drawings represent:
1-ammonia injection grid; 2-main body tube; 3-a nozzle; 4-horizontal pipe; 5-vertical tubes; 6-a static mixer; 7-a central rod; 8-inclined blades; 9-flow equalizing spoiler; 10-cyclone shell; 11-a central connecting frame; 12-an access frame; 13-connecting edge.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
As shown in fig. 1, fig. 1 is a schematic structural diagram of the denitration reactor. The denitration reactor comprises an ammonia injection grid 1, a static mixer 6 and a flow equalizing and disturbing device 9, wherein the ammonia injection grid 1 and the static mixer 6 are arranged in a flue gas inlet pipeline, the static mixer 6 is arranged above the ammonia injection grid 1, the flow equalizing and disturbing device 9 is arranged in a reactor main body, the flue gas inlet pipeline is communicated with the reactor main body, the reactor main body is provided with a catalyst layer, and the flow equalizing and disturbing device 9 is arranged between the catalyst layer and a communication port of the flue gas inlet pipeline and the reactor main body.
Flue gas enters the flue gas inlet pipeline from a flue gas inlet and is mixed with hot air generated by a hot air pipe, mixed gas flows through the ammonia spraying grid 1, ammonia spraying is started from an ammonia spraying opening, the mixed gas flows into the reactor main body through an ascending flue and a horizontal flue, and denitration reaction is carried out on the catalyst layer under the full disturbance and the staggered heat exchange of the flow equalizing and disturbing device 9.
As shown in fig. 2, 3 and 4, fig. 2 is a structural arrangement diagram of the ammonia injection grid and the static mixer; FIG. 3 is a perspective view of the ammonia injection grid; FIG. 4 is a structural side view of the ammonia injection grid; the ammonia injection grid 1 comprises a main body pipe 2 and nozzles 3, the nozzles 3 are symmetrically arranged on two sides of the main body pipe 2, and the nozzles 3 are arranged at the same distance on one side of the main body pipe 2, each nozzle 3 comprises a parallel pipe and a vertical pipe 5, each vertical pipe 5 passes through the parallel pipe and the main body pipe 2, a first hollow cavity is arranged in the main body pipe 2 and is used for introducing ammonia gas into the nozzles 3, a second hollow cavity is arranged in the parallel pipe, a third hollow cavity is arranged in the vertical pipe 5 and passes through the second hollow cavity and the first hollow cavity, and the ammonia gas enters the third hollow cavity and is sprayed out from a first gas outlet and a second gas outlet at the upper end and the lower end of the third hollow cavity.
The extending direction of the main body pipe 2 is perpendicular to the flowing direction of the incoming smoke, the extending direction of the parallel pipe is perpendicular to the flowing direction of the incoming smoke and the extending direction of the main body pipe 2, and the extending direction of the vertical pipe 5 is parallel to the flowing direction of the incoming smoke and perpendicular to the extending direction of the parallel pipe. The ammonia gas sprayed from the nozzle 3 and the flue gas are in the same direction, and the flue gas can wash the nozzle 3 to avoid the blockage of the nozzle 3.
Generally, the axis of the main tube 2, the axis of the parallel tube and the axis of the center rod 7 are all horizontally disposed, and the axis of the vertical tube 5 is vertically disposed.
Preferably, the nozzle 3 is clamped on the main tube 2 and can rotate 90 degrees. The horizontal pipe 4 can be in on the main part pipe 2 along the rotation of 90 degrees of horizontal pipe 4 center pin, when spouting the ammonia, the horizontal pipe 4 rotates 90 degrees for vertical pipe 5 is in the horizontality, and the ammonia blowout direction is perpendicular with the flue gas direction, and this ammonia spraying mode is favorable to ammonia and flue gas misce bene, works as when nozzle 3 has certain ash that falls, can be in the SCR system shut down with nozzle 3 rotation 90 degrees to vertical pipe 5 is in vertical state, the ash that falls in the nozzle 3 can drop by oneself or is washed by the flue gas and drops when the SCR system operation.
As shown in fig. 5, fig. 5 is a perspective view of the static mixer; static mixer 6 includes well core rod 7 and slope blade 8, well core rod 7 set up to extending direction with the straight-bar spare that 2 extending direction of main part pipe are the same, slope blade 8 be by the dull and stereotyped slice spare of the outside level extension in well core rod 7 both sides, a plurality of slope blade 8 sets up well core rod 7 both sides, slope blade 8 with nozzle 3 one-to-one sets up. The inclined blades 8 on the static mixer 6 correspond to the vertical pipes 5 of the nozzle 3 one by one, can shield falling ash and can automatically slide when the falling ash is accumulated to a certain amount, and meanwhile, the inclined blades 8 have a turbulence effect.
Preferably, the inclined blades 8 comprise a first inclined blade 8 and a second inclined blade 8, and the inclination directions of the first inclined blade 8 and the second inclined blade 8 are opposite. The first inclined blade 8 and the second inclined blade 8 are respectively provided on both sides of the central rod 7.
Typically, a plurality of said first inclined blades 8 are arranged equidistantly on one side of said central rod 7, and a plurality of said second inclined blades 8 are arranged equidistantly on the other side of said central rod 7.
Preferably, the main tube 2 is a cylindrical tube structure. The central rod 7 is arranged in a rectangular tube structure.
The static mixer 6 is vertically arranged at a position 400-600 mm above the ammonia injection grid 1, the main body pipe 2 and the central rod 7 are arranged in a one-to-one correspondence manner, and the nozzles 3 and the inclined blades 8 are arranged in a one-to-one correspondence manner.
In the static mixer 6, the inclined angle between the inclined blades 8 and the central rod 7 is 15-20 °.
The extending length of the inclined blades 8 on the ammonia injection grid 1 and the static mixer 6 is 2-4 times of the radius of the vertical small pipe.
FIG. 6 is a structural top view of the flow spoiler shown in FIG. 6; the flow equalizing and disturbing device 9 is arranged above the catalyst layer, the flow equalizing and disturbing device 9 comprises a plurality of coaxially arranged swirl shells 10, and each swirl shell 10 is sleeved from inside to outside in sequence.
As shown in fig. 7, fig. 7 is a perspective structural view of the flow spoiler; the inner cyclone shell 10 is sleeved by the outer cyclone shell 10 in a ring, the horizontal distance between adjacent cyclone shells 10 is 50-100 mm, and the rotating directions of the adjacent cyclone shells 10 are opposite.
As shown in fig. 8, fig. 8 is a perspective structural view of the cyclone casing; the cyclone shell 10 comprises a central connecting frame 11 and inlet and outlet frames 12 symmetrically arranged on two sides of the central connecting frame 11, the plane where the central connecting frame 11 is located and the plane where the inlet and outlet frames 12 are located are arranged in parallel, and the central connecting frame 11 and the inlet and outlet frames 12 are connected through a plurality of flow guide wall plates to form the cyclone shell 10 in a cylindrical structure. Adjacent the connection arris 13 that the water conservancy diversion wallboard formed connects is the heliciform and by central connection frame 11 extends to two access port frame 12 is same on the whirl shell 10, 11 one side of central connection frame the connection arris 13 revolves to the homogeneous phase the same, 11 both sides of central connection frame the connection arris 13 is all opposite.
Preferably, the central connection frame 11 of each cyclone casing 10 is disposed on the same plane, and the inlet and outlet frames 12 on one side of the central connection frame 11 are disposed on the same plane, and the inlet and outlet frames 12 on two sides of the central connection frame 11 respectively form an air inlet and an air outlet of the flow equalizing spoiler 9.
Generally, the central connection frame 11 and the inlet/outlet frame 12 are both configured as square frame bodies, the side length of the central connection frame 11 on the same cyclone casing 10 is 100mm to 200mm smaller than that of the inlet/outlet, the central connection frame 11 and the inlet/outlet frame 12 on the same cyclone casing 10 are correspondingly arranged at right-angle end points one by one, and the three correspondingly arranged right-angle end points are arranged on the same vertical plane.
For convenience of explanation, a right-angle end point on the central connection frame 11 is set as a starting end point, a corresponding right-angle end point on the entrance and exit frame 12 is set as a corresponding end point, right-angle end points on the entrance and exit frame 12 adjacent to two sides of the corresponding end point are set as ending end points, and the connection rib 13 extends from the starting end point to the ending end points to form a spiral structure.
According to the invention, the nozzle 3 is arranged to be of a three-way structure consisting of the parallel pipe perpendicular to the incoming smoke and the vertical pipe parallel to the incoming smoke, ammonia is sprayed out from the outlets at the upper end and the lower end of the vertical pipe and is parallel to the flow direction of the smoke, the interior of the vertical pipe can be flushed by the smoke, and dust accumulation and blockage are avoided. Static mixer 6 includes the rectangular pipe and distributes the slope blade 8 in the rectangular pipe both sides, slope blade 8 is in nozzle 3 top can shelter from the ash that falls and can automatic landing when the ash that falls accumulates a certain amount, and the blade of slope has the vortex effect simultaneously.
Meanwhile, the flow equalizing and disturbing device 9 is composed of a plurality of cyclone shells 10 which are sequentially sleeved, the rotating directions of the adjacent cyclone shells 10 are opposite, and the flue gas with uneven temperature can be divided into a plurality of strands before entering the catalyst layer and is subjected to sufficient disturbance and staggered heat exchange, so that the temperature and the speed of the flue gas are uniformly distributed.
The nozzle 3 is not easy to block and simple in structure, the static mixer 6 can disturb the flue gas and prevent falling ash falling off from the flue gas wall from entering the nozzle 3, and the flow equalizing and disturbing device 9 can fully disturb the flue gas with uneven temperature to realize staggered heat exchange, so that the temperature and the speed of the flue gas are uniformly distributed.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. The utility model provides a denitration reactor, its characterized in that, includes ammonia injection grid, static mixer and flow straightener, the ammonia injection grid with static mixer sets up in the flue gas inlet pipe, static mixer sets up ammonia injection grid top, the flow straightener sets up in the reactor main part, the flue gas inlet pipe with reactor main part intercommunication, the reactor main part is provided with the catalyst layer, the flow straightener sets up the catalyst layer with the flue gas inlet pipe with between the intercommunication mouth of reactor main part.
2. The denitration reactor of claim 1, wherein the ammonia injection grid comprises a main pipe and nozzles, the nozzles are arranged on two sides of the main pipe, the nozzles comprise parallel pipes and vertical pipes, the vertical pipes are communicated with the main pipe through the parallel pipes, the extending direction of the vertical pipes is parallel to the flowing direction of the incoming flue gas, and a first air outlet and a second air outlet are respectively arranged at two ends of each vertical pipe.
3. The denitration reactor according to claim 2, wherein the main tubes extend in a direction perpendicular to a flow direction of the incoming flue gas, the parallel tubes extend in a direction perpendicular to both the flow direction of the incoming flue gas and the extension direction of the main tubes, and the vertical tubes extend in a direction parallel to the flow direction of the incoming flue gas and perpendicular to the extension direction of the parallel tubes.
4. The denitration reactor of claim 3, wherein the nozzles are symmetrically disposed on both sides of the main tube, and the nozzles are disposed equidistantly on one side of the main tube.
5. The denitrification reactor of claim 2, wherein the static mixer comprises a central rod and inclined blades, the central rod is provided as a straight rod member extending in the same direction as the main tube, the inclined blades are flat plate-like members extending horizontally outward from both sides of the central rod, and a plurality of the inclined blades are provided on both sides of the central rod; the inclined blades and the nozzles are arranged in a one-to-one correspondence.
6. The denitration reactor of claim 5, wherein the inclined blades include a first inclined blade and a second inclined blade, and the first inclined blade and the second inclined blade are inclined in opposite directions; the first inclined blade and the second inclined blade are respectively arranged on two sides of the central rod at equal intervals.
7. The denitration reactor of claim 5, wherein the axis of the main tube, the axis of the parallel tubes, and the axis of the center rod are horizontally disposed, and the axis of the vertical tube is vertically disposed.
8. The denitration reactor of claim 1, wherein the flow equalizing spoiler comprises a plurality of coaxially arranged cyclone shells, each cyclone shell is sleeved from inside to outside in sequence, and the rotation directions of the adjacent cyclone shells are opposite.
9. The denitration reactor of claim 8, wherein the cyclone casing comprises a central connecting frame and inlet and outlet frames symmetrically arranged at two sides of the central connecting frame, the plane of the central connecting frame is parallel to the plane of the inlet and outlet frames, and the central connecting frame and the inlet and outlet frames are connected through a plurality of flow guide wall plates to form the cyclone casing with a cylindrical structure; the connecting edges formed by connecting the adjacent flow guide wall plates are spiral and extend from the central connecting frame to the two inlet and outlet frames.
10. The denitration reactor of claim 9, wherein the central connection frame of each cyclone casing is disposed on the same plane, and the inlet and outlet frames of one side of the central connection frame are disposed on the same plane.
CN202110196044.6A 2021-02-20 2021-02-20 Denitration reactor Pending CN112999862A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110196044.6A CN112999862A (en) 2021-02-20 2021-02-20 Denitration reactor

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Application Number Priority Date Filing Date Title
CN202110196044.6A CN112999862A (en) 2021-02-20 2021-02-20 Denitration reactor

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103007701A (en) * 2012-10-16 2013-04-03 西安热工研究院有限公司 Petal ammonia injection grid for combining local vortex and overall vortex
JP2015174004A (en) * 2014-03-13 2015-10-05 株式会社Ihi Flue gas denitrification equipment
CN205598967U (en) * 2016-03-31 2016-09-28 中国华电科工集团有限公司 A static mixer for selective catalytic reduction system
CN110295981A (en) * 2019-08-13 2019-10-01 中国船舶重工集团柴油机有限公司 A kind of high pressure SCR system of efficient emission-reducing peculiar to vessel
CN209576362U (en) * 2019-07-16 2019-11-05 北京博奇电力科技有限公司 A kind of Novel SCR denitrating system static state vortex mixer
CN210186875U (en) * 2019-06-14 2020-03-27 中国神华能源股份有限公司 Spray nozzle of ammonia injection grid, ammonia injection grid and SCR denitration system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103007701A (en) * 2012-10-16 2013-04-03 西安热工研究院有限公司 Petal ammonia injection grid for combining local vortex and overall vortex
JP2015174004A (en) * 2014-03-13 2015-10-05 株式会社Ihi Flue gas denitrification equipment
CN205598967U (en) * 2016-03-31 2016-09-28 中国华电科工集团有限公司 A static mixer for selective catalytic reduction system
CN210186875U (en) * 2019-06-14 2020-03-27 中国神华能源股份有限公司 Spray nozzle of ammonia injection grid, ammonia injection grid and SCR denitration system
CN209576362U (en) * 2019-07-16 2019-11-05 北京博奇电力科技有限公司 A kind of Novel SCR denitrating system static state vortex mixer
CN110295981A (en) * 2019-08-13 2019-10-01 中国船舶重工集团柴油机有限公司 A kind of high pressure SCR system of efficient emission-reducing peculiar to vessel

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Application publication date: 20210622