CN110065954A - Ammonia gas generating device - Google Patents
Ammonia gas generating device Download PDFInfo
- Publication number
- CN110065954A CN110065954A CN201910430620.1A CN201910430620A CN110065954A CN 110065954 A CN110065954 A CN 110065954A CN 201910430620 A CN201910430620 A CN 201910430620A CN 110065954 A CN110065954 A CN 110065954A
- Authority
- CN
- China
- Prior art keywords
- shell
- ammonia
- generating device
- inlet pipe
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 54
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003546 flue gas Substances 0.000 claims abstract description 31
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 10
- 239000004202 carbamide Substances 0.000 abstract description 10
- 238000000889 atomisation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 11
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 11
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 11
- 239000001099 ammonium carbonate Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910001868 water Inorganic materials 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000007704 transition Effects 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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/026—Preparation of ammonia from inorganic compounds
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Abstract
The present invention relates to ammonia preparation technical fields, specifically provide a kind of ammonia gas generating device, it is intended to which the ammonia gas generating device high temperature flue gas for solving existing flue gas denitrification system is mixed with the urea liquid after atomization to be not enough, the low problem of ammonia production.For this purpose, it is columned shell that ammonia gas generating device of the invention, which includes inner cavity, inlet tube, air inlet pipe, liquid outlet and gas outlet are provided on shell；Inlet tube is set to the top center position of shell and extends downwardly, and inlet tube is provided with the spraying component for spraying ammonia stoste processed into shell；Air inlet pipe for conveying from high-temperature flue gas to shell is connected to the side of shell, and the inner wall of air inlet pipe and the inner wall of shell are tangent；Liquid outlet and gas outlet are all set in the bottom of shell, are respectively used to that the product liquid and gaseous product of ammonia reaction processed is discharged.High-temperature gas forms swirling eddy after entering shell, to promote the mixing of atomized liquid and high-temperature gas, improves the yield of ammonia.
Description
Technical field
The present invention relates to ammonia preparation technical fields, specifically provide a kind of ammonia gas generating device.
Background technique
Contain a large amount of NOx in the flue gas of the discharges such as thermal power plant, smeltery, Industrial Boiler, is to generate acid in atmosphere
The major pollutants of rain.Currently, most mature gas denitrifying technology is selective-catalytic-reduction denitrified (SCR), principle is benefit
The NOx in flue gas is reduced into N under the effect of the catalyst with ammonia2And H2O.In general, in flue gas denitrification system, concentrated ammonia liquor
It is added into ammonia gas generating device heating and generates ammonia, the ammonia of generation is being mixed with flue gas to restore the NOx in flue gas.
But, concentrated ammonia liquor prepares raw material transport inconvenience as ammonia, and there are biggish security risks.
In consideration of it, urea granules and water are mixed to form urea liquid, urea liquid by improved flue gas denitrification system
It is sprayed by spray equipment in the reaction chamber of ammonia gas generating device, while high-temperature flue gas is passed into the reaction chamber of ammonia gas generating device
Interior, the urea liquid after atomization is mixed with high-temperature flue gas, and the heat of high-temperature flue gas makes the urea in urea liquid decompose generation ammonia
The mixed gas of gas, ammonia and flue gas is discharged and is passed through in denitration reaction device ammonia under the effect of the catalyst after dehumidifying
Occur reduction reaction and the NOx in removing smoke with the NOx in flue gas.But, high-temperature flue gas is usually directly to occur from ammonia
The bottom of device is passed through in ammonia gas generating device, and the top of ammonia gas generating device is arranged in gas outlet, and high-temperature flue gas enters shell
It flows and is finally flowed out from gas outlet directly up later, flue gas and the urea liquid undercompounding after atomization, ammonia production are low.
Correspondingly, this field needs a kind of new technical solution to solve the above problems.
Summary of the invention
In order to solve the above problem in the prior art, in order to solve the ammonia gas generating device of existing flue gas denitrification system
High temperature flue gas is mixed with the urea liquid after atomization and is not enough, and the low problem of ammonia production, the present invention provides a kind of ammonia
Gas generating device, the ammonia gas generating device include that inner cavity is columned shell, are provided with inlet tube, air inlet on the shell
Pipe, liquid outlet and gas outlet；The inlet tube is set to the top center position of the shell, and the inlet tube is located at described
The intracorporal part of shell is provided with spraying component, and the spraying component is used to spray ammonia stoste processed into the shell；The air inlet
Pipe is for conveying high-temperature flue gas into the shell and is connected to the side of the shell: the air inlet pipe as follows
Inner wall and the shell inner wall it is tangent；The liquid outlet and the gas outlet are all set in the bottom of the shell, respectively
For the product liquid and gaseous product of ammonia reaction processed to be discharged.
In the optimal technical scheme of above-mentioned ammonia gas generating device, the axis phase of the axis of the air inlet pipe and the shell
It is mutually vertical.
In the optimal technical scheme of above-mentioned ammonia gas generating device, the internal diameter of the air inlet pipe is less than the inner cavity of the shell
Radius.
In the optimal technical scheme of above-mentioned ammonia gas generating device, the axis of the axis of the air inlet pipe and the inlet tube
Also it is mutually perpendicular to.
In the optimal technical scheme of above-mentioned ammonia gas generating device, the air inlet pipe is disposed in proximity to the case top
Position.
In the optimal technical scheme of above-mentioned ammonia gas generating device, the air inlet pipe is disposed in proximity to the top of the shell
Position and its outlet end tilt down.
In the optimal technical scheme of above-mentioned ammonia gas generating device, it is additionally provided on the inner wall of the shell and prolongs from the top down
The helical form air guide stretched.
In the optimal technical scheme of above-mentioned ammonia gas generating device, the upper end of the helical form air guide and the air inlet
The outlet end of pipe connects.
In the optimal technical scheme of above-mentioned ammonia gas generating device, the helical form air guide include in the width direction from
The inner wall of the shell towards the shell axis extend spiral deflector, the screw pitch of the spiral deflector from top to bottom by
It is decrescence small.
In the optimal technical scheme of above-mentioned ammonia gas generating device, between the spiral deflector and the axis of the shell
Angle in the range of 70-90 degree.
It will be appreciated to those of skill in the art that in the inventive solutions, ammonia gas generating device includes inner cavity
For columned shell, it is provided with inlet tube, air inlet pipe, liquid outlet and gas outlet on shell, shell is arranged in inlet tube
It top center position and extends downwardly, inlet tube is located at the intracorporal part of shell and is provided with spraying component, and spraying component is used for shell
Sprinkling ammonia stoste processed in vivo；Air inlet pipe is used to convey high-temperature flue gas into shell and is connected to the side of shell as follows
Portion: the inner wall of air inlet pipe and the inner wall of shell are tangent；Liquid outlet and gas outlet are all set in the bottom of shell, are respectively used to be discharged
The product liquid and gaseous product of ammonia reaction processed.It should be noted that the inner wall of air inlet pipe and the inner wall of shell are tangent, refer to
Air inlet pipe is penetrated from the side of shell, and the axis of air inlet pipe is exactly equal to internal diameter (the i.e. shell of shell at a distance from the axis of shell
The diameter of the inner cavity of body) half with the difference of the internal diameter of air inlet pipe (diameter on the cylindrical surface that air inlet inside pipe wall is formed).Pass through
Such setting, air inlet pipe are passed through the high-temperature flue gas in the inner cavity of shell and form air-flow, enter shell from the outlet end of air inlet pipe
Inner cavity after, directly constantly change flow direction along the cylindrical surface of shell, and then formed and rotate downward swirling eddy.System
Ammonia stoste (such as ammonium bicarbonate solution) is sprayed to (i.e. close in the middle part of the inner cavity of shell through the spraying component formation atomized liquid on inlet tube
In the region of shell axis).Portion settles downwards atomized liquid in the lumen under gravity, the rotary pneumatic that high-temperature gas is formed
It flows the surrounding downward spiral in inner cavity to flow, and flow velocity is greater than the gas flow rate in the middle part of inner cavity, make inside swirling eddy and attached
Close air pressure is less than the air pressure in the middle part of inner cavity, so that atomized liquid is inhaled into rotation during sedimentation under the action of draught head
In air-flow, turbulent flow is formed inside swirling eddy, atomized liquid is mixed with high-temperature gas, is inhaled with the atomized liquid that high-temperature gas comes into full contact with
It receives the heat of high-temperature gas and so that ammonium bicarbonate is decomposed and generate ammonia, improve the utilization rate and atomized liquid of high-temperature gas heat
The resolution ratio of middle reactant (ammonium bicarbonate), and then improve the yield of ammonia.
Detailed description of the invention
The preferred embodiment of the present invention described with reference to the accompanying drawings, in attached drawing:
Fig. 1 is the structural schematic diagram one of the ammonia gas generating device of an embodiment of the present invention；
Fig. 2 is the front view of the ammonia gas generating device of an embodiment of the present invention；
Fig. 3 be in Fig. 2 along the sectional view of A-A；
Fig. 4 is the semi-cutaway of the ammonia gas generating device of an embodiment of the present invention；
Fig. 5 is the enlarged drawing of part B in Fig. 4.
Reference signs list:
11, upper housing；12, lower case；13, section is bored；21, first flange；22, second flange；23, third flange；24,
Four flanges；31, inlet tube；32, air inlet pipe；33, gas outlet；34, liquid outlet；4, atomizer；5, spiral deflector.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining technical principle of the invention, it is not intended that limit the scope of the invention.Although for example,
The shell of ammonia gas generating device of the invention includes two different upper housings of diameter and lower case, but those skilled in the art
It can according to need and make adjustment to it, to adapt to specific application, such as shell of ammonia gas generating device of the invention
Can the identical upper housing of two sections of diameters and lower case, being also possible to integral type inner cavity is columned shell etc..Obviously, it adjusts
Technical solution afterwards will fall into protection scope of the present invention.
It should be noted that in the description of the present invention, the instruction such as term "left", "right", "upper", "lower", "inner", "outside"
Direction or the term of positional relationship be direction based on the figure or positional relationship, this is intended merely to facilitate description, and
It is not that indication or suggestion described device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third ", " the 4th " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance.
In addition, it should also be noted that, in the description of the present invention unless specifically defined or limited otherwise, term " is set
Set ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or integral type connection；It can
To be to be connected directly, the connection inside two elements can also can also be indirectly connected through an intermediary.For this field
For technical staff, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In addition, in order to better illustrate the present invention, numerous details is given in specific embodiment below.
It will be appreciated by those skilled in the art that without certain details, the present invention equally be can be implemented.In some embodiments, right
It is not described in detail in method well known to those skilled in the art, means, element and circuit, in order to highlight this master of the invention
Purport.
It is the structural schematic diagram one of the ammonia gas generating device of an embodiment of the present invention referring to figs. 1 to Fig. 4, Fig. 1；Fig. 2 is
The front view of the ammonia gas generating device of an embodiment of the present invention；Fig. 3 be in Fig. 2 along the sectional view of A-A；Fig. 4 is the present invention one
The semi-cutaway of the ammonia gas generating device of kind embodiment.
As shown in Figures 1 to 4 and according to orientation shown in Fig. 2, in a kind of specific embodiment, ammonia gas generating device
Shell includes that inner cavity setting up and down is the different upper housing 11 and lower case 12 of columned internal diameter, and the lower end of upper housing 11 is set
It is equipped with the cone section 13 of transition connection, the lower end of cone section 13 is provided with first flange 21, and the upper end of lower case 2 is provided with the second method
Orchid 22,11 lower part of upper housing and the osculum end of cone section 13 are welded and fixed, and the big opening end of cone section 13 is welded and fixed with first flange 21,
The upper end of lower case 12 is welded and fixed with second flange 22, and first flange 21 and second flange 22 are docking together and pass through bolt
(not shown) is fixed.The top center position of upper shell 11 is provided with inlet tube 31, and inlet tube 31 is from third flange 23
Middle part passes through, and the top of upper shell 11 is welded with the 4th flange 24, third flange 23 and the 4th flange 24 and passes through bolt (figure
In be not shown) be fixedly connected, be overlapped inlet tube 31 and the axis of upper housing 11 and lower case 12.Inlet tube 31 is located at lower case
Part in 12 is provided with the spraying component for spraying ammonium bicarbonate solution (ammonia stoste i.e. processed) into shell, as along inlet tube 31
Axis direction is alternately distributed 5 atomizers 4 in 31 two sides of inlet tube.The side of upper housing 11 is arranged close to the position on top
There is the air inlet pipe 32 for conveying high-temperature flue gas into shell, and the inner wall of air inlet pipe 32 and the inner wall of upper housing 11 are tangent,
And the axis of air inlet pipe 32 is vertical with the axis of upper housing 11.That is, the axis of the axis of air inlet pipe 32 and upper housing 11
The distance of line is exactly equal to the internal diameter (air inlet pipe of internal diameter (i.e. the diameter of the inner cavity of upper housing 11) and air inlet pipe 32 of upper housing 11
The diameter on the cylindrical surface that 32 inner walls are formed) difference half, and the axis of air inlet pipe 32 is vertical with the axis of upper housing 11.
Preferably, the internal diameter of air inlet pipe 32 is less than the radius of the inner cavity of upper housing 11.The bottom of lower case 12, which is provided with, radially to be set
The gas outlet 33 set and the liquid outlet being arranged downward 34, gas outlet 33 are used to be discharged the liquid that ammonia processed reaction generates in shell and produce
Object, gas outlet 33 are used to be discharged the gaseous product that ammonia processed reaction generates in shell.
Ammonium bicarbonate solution is inputted by inlet tube 31 and forms atomized liquid after the ejection of atomizer 4, and atomized liquid is sprayed
Middle part (close to the region of its axis i.e. in upper housing 11) and sedimentation downwards under gravity to upper housing 11.Firepower hair
The high-temperature flue gas of the discharges such as power plant, smeltery, Industrial Boiler is passed through upper housing 11 by air inlet pipe 32.Orientation shown in Fig. 3,
High-temperature flue gas forms straight air stream in air inlet pipe 32, and straight air stream flows into upper housing 11 along air inlet pipe 32 from right to left, from into
After the outlet end outflow of tracheae 32, straight air stream is forced to change flow direction and be bonded under the action of the Cylinder Surface of upper shell 11
The inner wall of upper housing 11 is along rotational flow counterclockwise, and the bottom of lower case 12 is arranged in gas outlet 33, due to air pressure inside
The effect of difference and gravity, the air-flow that high-temperature flue gas is formed flow downward simultaneously in upper housing 11, to be formed to dirty
Dynamic spiral air flow, spiral air flow fitting upper housing 11 inner wall be rotated down flowing, into lower case 12 after largely continue
It is bonded the downward helical flow of inner wall of lower case 12.The gas of housing central section (close to the region of its axis i.e. in shell) flows speed
Degree is smaller, and the flow velocity of swirling eddy is larger, to make the air pressure for being less than housing central section inside swirling eddy with neighbouring air pressure.Gas
The presence of pressure difference spreads atomized liquid quickly into the intracorporal swirling eddy of shell, and there are turbulent flows in swirling eddy, to make mist
Change liquid uniformly to mix with high-temperature gas.Atomized liquid absorb high-temperature flue gas in heat, ammonium bicarbonate therein thermally decomposed to generate ammonia,
Water and carbon dioxide, with the consumption of heat, the steam of generation and remaining atomized liquid condense into drop and fall and be gathered in down
The bottom of shell 12 is finally discharged from liquid outlet 34, and the gaseous mixture of ammonia, carbon dioxide and flue gas is from the bottom of lower case 12
Gas outlet 33 is discharged.
The inner wall of air inlet pipe 32 is tangent with the inner wall of upper housing 11 and its axis is vertical with the axis of upper housing, can make
High-temperature gas flows after flowing into upper housing 11 from the outlet end of air inlet pipe 32 along a horizontal tangent of upper housing 11, thus
It is forced to change under the action of the cylindric curved surface of upper housing 11 and flows to and rotational flow.Also, setting can reduce upper casing in this way
The inner wall of body 11 guarantees air-flow to reduce the kinetic energy rejection of air-flow during swirling eddy is formed to the resistance of air-flow
Rotation speed.The internal diameter of air inlet pipe 32 is less than the radius of the inner cavity of upper housing 11, can make high-temperature gas along air inlet pipe 32 from upper
The axis side of shell 11 enters in upper housing 11, and then so that the high-temperature gas entered is both participated in rotation under the action of curved inner wall
Turn the formation of air-flow.The middle position of case top, and the axis of the axis of inlet tube 31 and air inlet pipe 32 is arranged in inlet tube 31
Line is vertical, atomized liquid can be made uniformly to be sprayed to housing central section, so that atomized liquid be made equably to diffuse to the swirling eddy of surrounding
In, atomized liquid and high-temperature gas mixability are improved, the decomposition of ammonium bicarbonate in ammonia stoste processed is promoted, improves the production of ammonia
Amount.Ammonium bicarbonate solution is used as ammonia solution processed, since ammonium bicarbonate pyrolysis temperature is lower, when being mixed with mutually synthermal high-temperature flue gas, and phase
Than urea liquid, resolution ratio is high, can further increase the yield of ammonia.
It will be appreciated by persons skilled in the art that the shell of ammonia gas generating device includes two different upper housings of diameter
It is only a kind of illustrative description with lower case, those skilled in the art, which can according to need, makes adjustment to it, to adapt to
Specific application, as ammonia gas generating device shell can the identical upper housing of two sections of diameters and lower case, be also possible to
Integral type inner cavity is columned shell etc..In addition, it is only a kind of illustrative description, ability that the quantity of atomizer 4, which is 5,
Field technique personnel, which can according to need, makes adjustment to it, to adapt to specific application, as the quantity of atomizer 4 can
Be 4,6,7 or more etc., and the nozzle diameter of atomizer 4 can be adjusted according to actual needs,
The nozzle diameter of such as atomizer 4 can be 0.1mm, 0.3mm, 0.5mm or other are suitably sized.In addition, inlet tube
31 to be arranged to be overlapped with the axis of upper housing 11 and lower case 12 be only a kind of preferred embodiment, and those skilled in the art can
To make adjustment as needed to it, to adapt to specific application, it is located at shell as inlet tube 31 also can be set into
Top center position simultaneously forms 5 °, 10 ° angles etc. with the axis of shell.In addition, the side of upper housing 11 is arranged in air inlet pipe 32
Position close to top is only a kind of illustrative description, and those skilled in the art, which can according to need, makes adjustment to it, with
Just specific application is adapted to, it, and can be with if the position in the side of upper housing 11 close to bottom can be set in air inlet pipe 32
Position of the side close to top of lower case 12 is set, as long as high-temperature gas downward spiral can be made to flow to gas outlet 33 i.e.
It can.
In a kind of alternative embodiment, the difference with above-described embodiment is: the axis and upper housing of air inlet pipe 32
11 axis out of plumb, air inlet pipe 32 are arranged to outlet end and tilt down setting.Setting in this way, high-temperature flue gas is in air inlet
Form straight air stream in pipe 32 and flow to upper housing 11, straight air stream flowed out from the outlet end of air inlet pipe 32 and in upper housing 11
Wall fitting, diagonally downward, the speed of straight air stream can be decomposed into the level in horizontal plane point speed to the directional velocity of straight air stream
Degree and vertical component velocity along the vertical direction.A tangential direction of the horizontal component velocity along upper housing 11 at this, promotes
Air-flow is bonded the inner wall rotational flow of upper housing 11, and vertical component velocity promotes air-flow to flow downward, to promote to rotate downwards
The formation of spiral air flow.
It is the enlarged drawing of part B in Fig. 4 referring to Fig. 5 and with continued reference to Fig. 4, Fig. 5.Preferably, it is provided in upper housing 11
The inner wall of helical form air guide, helical form air guide fitting upper housing 11 extends from the top down.Specifically, helical form water conservancy diversion
Component is spiral deflector 5.High-temperature gas enters after upper housing 11 from air inlet 32 is formed in the interior thereof spiral air flow, spiral
Air-flow flow downward during after spiral deflector 5, to the further moulding of air-flow, flow spiral is promoted to flow downward,
The stroke for extending flow spiral flowing, reaching spiral air in lower case 12 can keep downward spiral to flow for a long time, from
And promote the mixing of atomized liquid and high-temperature gas.
Preferably, the upper end of spiral deflector 5 is connect with the outlet end of air inlet pipe 32.High-temperature gas goes out from air inlet pipe 32
When mouth end flows into upper housing 11, high-temperature gas promotes gas under the inner wall of shell 1 and the collective effect of helical form air guide
Downward spiral flowing, promotes the quick formation of swirling eddy, and lead screw air-flow from the top down spiral flow to lower case 12,
Atomized liquid and high-temperature gas is promoted to be sufficiently mixed in lower case 12.Preferably, the screw pitch of helical form deflector from the top down by
It is decrescence small.During the air-flow that high-temperature gas is formed flows through spiral deflector 5, the channel of airflow narrows from the width, and into
Tolerance remains unchanged, so that the speed of air-flow be promoted to accelerate, improves the flow velocity of swirling eddy, increases draught head, to mention
The high diffusion velocity of atomized liquid, promotes atomized liquid and high-temperature gas Quick uniform mixed, extends contact time, improve ammonia
Yield.
Preferably, as shown in figure 5, extending from the inner wall of upper housing 11 to the axis of upper housing 11 in spiral deflector 5
Direction (i.e. the width direction of spiral deflector 5), the angle α between spiral deflector 5 and the axis of upper housing 11 are arrived at 70 °
In the range of 90 °.Preferably, angle α is 70 °.Setting in this way, the mistake that high temperature gas flow can be made to flow in downward spiral
The mobile a small amount of distance of Cheng Zhongxiang inlet tube 31 utilizes rotary pneumatic so that a large amount of atomized liquids be made directly to be sprayed in swirling eddy
Turbulent closure scheme atomized liquid and high-temperature gas in stream, and partly atomized liquid is diffused in swirling eddy by draught head, makes to be atomized
Liquid and high-temperature gas mixing are more uniform.Preferably, multiple micropores are formed on spiral deflector 5, high temperature gas flow is led along spiral
During 5 downward spiral of flowing plate flows, portion gas can be passed through from the micropore on spiral deflector 5, will be in swirling eddy
Mixed atomized liquid is further broken up, and smaller atomized drop is formed, and mixes atomized liquid with high-temperature flue gas more uniform, improves
The contact area of atomized liquid and high-temperature gas further promotes the decomposition of ammonium bicarbonate in ammonium bicarbonate solution, improves the yield of ammonia.
It will be appreciated by persons skilled in the art that the angle α between spiral deflector 5 and the axis of upper housing 11 is
70 ° are only a kind of specific embodiments, and those skilled in the art, which can according to need, makes adjustment to it, as angle α can be with
It is 75 °, 80 °, 83 ° etc..In addition, it is a kind of preferred embodiment that the screw pitch of helical form deflector 5 is gradually reduced from the top down,
Those skilled in the art, which can according to need, is arranged to uniform pitch for helical form deflector 5；And the upper end of spiral deflector 5 with
The outlet end connection of air inlet pipe 32 is also only a kind of preferred embodiment, and those skilled in the art can according to need spiral
Deflector 5 is arranged to the upper end and does not connect with the outlet end of air inlet pipe 32.In addition, helical form air guide be spiral deflector only
It is a kind of specific embodiment, those skilled in the art, which can according to need, makes adjustment to it, to adapt to specifically answer
It is arranged to helix tube, helicla flute with occasion, such as by spiral stream guidance component.
Through above description as can be seen that in ammonia gas generating device of the invention, ammonia gas generating device includes that inner cavity is
Columned shell is equipped with inlet tube, air inlet pipe, liquid outlet and gas outlet on shell, and the top of shell is arranged in inlet
Middle position and extend straight down, inlet tube is located at the intracorporal part of shell and is provided with spraying component, and spraying component is used for shell
Sprinkling ammonia stoste processed in vivo, air inlet pipe is connected to the side of shell and the inner wall of the inner wall of air inlet pipe and shell is tangent, out liquid
Mouth and gas outlet are all set in the bottom of shell, are respectively used to that the product liquid and gaseous product of ammonia reaction processed is discharged.Air inlet pipe
Inner wall and shell inner wall it is tangent, can make high-temperature gas after the inner cavity that the outlet end of air inlet pipe enters shell, directly
Cylindrical surface along shell constantly changes flow direction, so that swirling eddy is formed, with the atomized liquid place for spraying into housing central section
Region formed draught head, promote atomized liquid spread into air-flow, thus under the turbulent flow in air-flow promote atomized liquid with
The mixing of high-temperature gas, and then improve the yield of ammonia.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
Claims (10)
1. a kind of ammonia gas generating device, which is characterized in that the ammonia gas generating device includes that inner cavity is columned shell, described
Inlet tube, air inlet pipe, liquid outlet and gas outlet are provided on shell；
The inlet tube is set to the top center position of the shell and extends downwardly, and the inlet tube is located in the shell
Part be provided with spraying component, the spraying component is used to spray ammonia stoste processed into the shell；
The air inlet pipe is used to convey high-temperature flue gas into the shell and is connected to the side of the shell as follows
Portion: the inner wall of the air inlet pipe and the inner wall of the shell are tangent；
The liquid outlet and the gas outlet are all set in the bottom of the shell, and the liquid for being respectively used to be discharged ammonia reaction processed produces
Object and gaseous product.
2. ammonia gas generating device according to claim 1, which is characterized in that the axis of the air inlet pipe and the shell
Axis is mutually perpendicular to.
3. ammonia gas generating device according to claim 2, which is characterized in that the internal diameter of the air inlet pipe is less than the shell
Inner cavity radius.
4. ammonia gas generating device according to claim 3, which is characterized in that the axis of the air inlet pipe and the inlet tube
Axis be also mutually perpendicular to.
5. ammonia gas generating device according to claim 4, which is characterized in that the air inlet pipe is disposed in proximity to the shell
The position at top.
6. ammonia gas generating device according to claim 1, which is characterized in that the air inlet pipe is disposed in proximity to the shell
Top position and its outlet end tilt down.
7. ammonia gas generating device according to any one of claim 1 to 6, which is characterized in that on the inner wall of the shell
It is additionally provided with the helical form air guide extended from the top down.
8. ammonia gas generating device according to claim 7, which is characterized in that the upper end of the helical form air guide and institute
State the outlet end connection of air inlet pipe.
9. ammonia gas generating device according to claim 8, which is characterized in that the helical form air guide includes along width
The spiral deflector that axis of the direction from the inner wall of the shell towards the shell extends, the screw pitch of the spiral deflector is from upper
It is gradually reduced under.
10. ammonia gas generating device according to claim 9, which is characterized in that the spiral deflector and the shell
Angle between axis is in the range of 70-90 degree.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110772985A (en) * | 2019-11-18 | 2020-02-11 | 湖南省约伯能源科技有限公司 | Catalyst loader and denitration reaction equipment with same |
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| CN110065954B (en) | 2023-12-01 |
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