CN110141957A - A kind of device and method of spray fluidisation separation nitrogen oxides - Google Patents
A kind of device and method of spray fluidisation separation nitrogen oxides Download PDFInfo
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- CN110141957A CN110141957A CN201910529881.9A CN201910529881A CN110141957A CN 110141957 A CN110141957 A CN 110141957A CN 201910529881 A CN201910529881 A CN 201910529881A CN 110141957 A CN110141957 A CN 110141957A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
Abstract
The invention discloses a kind of device and method of spray fluidisation separation nitrogen oxides, the equipment includes: shell, side is equipped with gas entrance to be processed, the gas to be processed of nitrogen-containing oxide is by the gas entrance to be processed tangentially into the shell, bottom is equipped with absorbing liquid spout and air inlet, top be equipped with gas vent, it is purified after gas be discharged from the gas vent；Absorb flow container, strong basicity absorbing liquid is sprayed from bottom to up into the shell through the absorbing liquid spout by delivery pump, with with gas reaction to be processed, the strong basicity adsorption liquid longitudinally sprayed into scatters to form countless adsorption liquid droplets and drop down onto housing bottom under the influence of gravity；Blower is blowed air into shell by air inlet, and the adsorption liquid droplet fallen is blown afloat upwards, circulation is formed, adsorption liquid droplet is made to gather shell, adsorption liquid droplet gas to be processed described in tangential high speed rotation is persistently cut, make the broken recombination of adsorption liquid droplet, sufficiently with gas reaction to be processed.
Description
Technical field
The present invention relates to petrochemical industries and environment protection field, more particularly to a kind of novel spray fluidisation separation nitrogen oxides
Device and method.
Background technique
Nitrogen oxides, including multiple compounds, such as nitrous oxide (N2O), nitric oxide (NO), nitrogen dioxide (NO2)、
Nitrogen trioxide (N2O3), dinitrogen tetroxide (N2O4) and dinitrogen pentoxide (N2O5) etc..In addition to nitrogen dioxide, other nitrogen oxidations
Object is extremely unstable, meets light, wet or thermal change into nitrogen dioxide and nitric oxide, nitric oxide becomes nitrogen dioxide again.Therefore, duty
What is contacted in industry environment is that several admixture of gas are frequently referred to the smoke of gunpowder (gas), predominantly nitric oxide and nitrogen dioxide, and with two
Based on nitrogen oxide.Every kind of nitrogen oxides all has different degrees of toxicity.
Nitrogen oxides based on nitric oxide and nitrogen dioxide is the important original to form photochemical fog and acid rain
Nitrogen oxides and hydrocarbon in cause, such as vehicle exhaust irradiate the toxic smog to be formed that reacts through ultraviolet light, claim
For photochemical fog.Photochemical fog has special odor, stimulates eyes, injures plant, and atmospheric visibility can be made to reduce.Separately
Outside, nitrogen oxides reacts the nitric acid generated with the water in air and nitrous acid is the ingredient of acid rain.Nitrogen oxides is that toxicity is very big
One of atmosphere pollution, it is therefore necessary to carry out strict control is discharged to it.According to atmosphere pollutants emission standards, nitrogen oxides
Discharge must not be higher than 250 μ g/m3(average daily), 350 μ g/m3(Shi Jun).
Currently used removal of nitrogen oxide method has: selective catalytic reduction, non-selective catalytic reduction, absorption method,
Absorption process, electronics and high pressure technique and microbial method, however, the above method all has some problems and deficiency: selectivity is urged
It is very high to change requirement of the reduction method to pipeline equipment, involves great expense, while be easy to causeing secondary pollution, easily leakage and operating difficulties；
The inefficiency of non-catalytic selective reduction method, the leakage rate of ammonia not only pollutes atmosphere, also in combustion of sulfurous fuel, forms sulphur
Sour ammonium blocks air preheater；The efficiency of absorption process is difficult to rise；Requirement of the absorption method to working environment is quite high, needs
Quantity of sorbent is big, and equipment is huge, is intermittently operated；Electronics and the capacity usage ratio of high pressure technique are low, and device structure is complicated, can not
Live actual condition is adapted to, is only capable of obtaining objective result in the lab；Technology microbial method is still in laboratory stage, there is phase
When more problems remain to overcome.
In addition, the absorption reclaimer of industrial application is mostly large-scale plant at present, constituent element is more, and process is more complex, example
As Publication No. CN206566729U Chinese utility model patent " iron oxide pigment produce when nitrous oxides exhaust gas efficiently locate
Chinese utility model " nitrogen oxide waste gas treatment apparatus " of the reason device " with Publication No. CN 206121499U, has used big
The amount concatenated mode of tower carries out the removing of nitrogen oxides, and top-down spray results in the wave of a large amount of absorbents
Take, energy-efficient oxides of nitrogen gas can not be absorbed.
Summary of the invention
In order to overcome the deficiencies of the above existing technologies, purpose of the present invention is to provide a kind of sprays to fluidize separating nitrogen oxygen
The device and method of compound, to realize nitrogen oxidation in efficient removal gas to be processed on the basis of reducing cost, simplifying system
The purpose of object.
In order to achieve the above object, the equipment that the present invention proposes a kind of spray fluidisation separation nitrogen oxides, comprising:
Shell (7), is equipped with gas entrance (8) to be processed, and the gas to be processed of nitrogen-containing oxide is entered by the gas to be processed
For mouth (8) tangentially into the shell (7), bottom is equipped with absorbing liquid spout (10) and air inlet (9), and top is equipped with gas
Export (11), it is purified after gas from the gas vent (11) be discharged；
Absorb flow container (4), by delivery pump (3) through the absorbing liquid spout (10) by strong basicity absorbing liquid from bottom to up
Spray enter the shell (7) in, with the gas reaction to be processed, the strong basicity adsorption liquid longitudinally sprayed into is in gravity
Under the influence of scatter to form countless adsorption liquid droplets and drop down onto the shell (7) bottom；
Blower (1) is blowed air into the shell (7), the adsorption liquid droplet that will be fallen by the air inlet (9)
It blows afloat upwards, forms circulation, so that adsorption liquid droplet is gathered the shell (7), the adsorption liquid droplet is by tangential high speed rotation institute
State gas to be processed persistently to cut, make the broken recombination of adsorption liquid droplet, sufficiently with the gas reaction to be processed.
Preferably, shell (7) internal upper part is additionally provided with filter device (5), to go to denitrogenate to by the shell (7)
The gas of oxide is discharged after being filtered by the gas vent (11).
Preferably, the filter device (5) is filter screen, is set to below gas vent (11).
Preferably, the recycling baffle (6) being placed in below the filter device (5) is also set up in the shell (7), to by institute
The absorption drop stated under filter device (5) filter carries out recycling aggregation, respectively recycles baffle (6) by pipeline and connects the absorption flow container
(4), the absorption drop that will assemble is collected again into the absorption flow container (4).
Preferably, the recycling baffle includes symmetrically arranged two pieces of overhead gages, and each overhead gage is in level inclination 10- respectively
15 ° are fixed on obliquely on 7 inner wall of shell, and the junction with the shell (7) inner wall is to connect the absorption flow container (4) to manage
The entrance in road.
Preferably, two pieces of symmetrical lower baffle plates are also correspondingly arranged below two pieces of overhead gages.
Preferably, multiple equipment are used in series, using the gas of the gas vent (11) of previous stage as next grading
Enter the gas to be processed of the entrance to be processed (8), to improve the efficiency of removing nitrogen oxides.
In order to achieve the above objectives, the present invention also provides a kind of method of spray fluidisation separation nitrogen oxides, it is applied to aforementioned
Equipment includes the following steps:
Step S1 is tangentially sprayed into the gas to be processed of nitrogen-containing oxide by the device bottom；
Step S2 will absorb the strong basicity adsorption liquid in flow container from the absorbing liquid spout of the housing bottom and longitudinally spray into institute
State shell, adsorption liquid droplet gas to be processed described in tangential high speed rotation is persistently cut, and makes the broken weight of adsorption liquid droplet
Group, sufficiently with the gas reaction to be processed, and the strong basicity adsorption liquid longitudinally sprayed into dissipates everywhere under the effect of gravity
It opens, form countless adsorption liquid droplets and drops back into the housing bottom,；
Step S3 continues upward air blowing by the air inlet of the housing bottom using blower, the adsorption liquid droplet that will be fallen
Again it blows afloat upwards, forms circulation, adsorption liquid droplet is made to gather inside the equipment, it is described to be processed farthest to absorb
Nitrogen oxides in gas；
Step S4, it is purified after gas from the gas vent discharge at the top of the equipment.
Preferably, further include following steps before step S4:
Before gas discharge, using a filter device to the gas after removing denitrification below the gas vent
It is filtered.
Preferably, using several recycling baffles being set to below the filter device to the folder under filter device filter
The adsorption liquid of band carries out recycling collection, is recycled in the absorption flow container.
Compared with prior art, a kind of device and method of spray fluidisation separation nitrogen oxides of the present invention are by by absorbing liquid
Strong basicity absorbing liquid is sprayed by absorbing liquid spout from bottom to up into spray fluidisation denitrifying oxide separator in tank, and is passed through
Air is blown into spray fluidisation denitrifying oxide separator by blower by air inlet, so that strong basicity absorbing liquid is followed in separator
Ring spray leaching, absorption efficiency is high, so that oxides of nitrogen gas can come into full contact with absorbing liquid, improves assimilation effect；The present invention
By using spray design from bottom to top and fluidisation design, reduce the total occupied area and gross investment of equipment.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the equipment of spray fluidisation separation nitrogen oxides of the present invention；
Fig. 2 is the bottom substance schematic diagram of the equipment of the spray fluidisation separation nitrogen oxides of the present invention；
Fig. 3 is that strong basicity absorbs liquid fluid line schematic diagram in the specific embodiment of the invention；
Fig. 4 is a kind of step flow chart of the method for spray fluidisation separation nitrogen oxides of the present invention.
Specific embodiment
Below by way of specific specific example and embodiments of the present invention are described with reference to the drawings, those skilled in the art can
Understand further advantage and effect of the invention easily by content disclosed in the present specification.The present invention can also pass through other differences
Specific example implemented or applied, details in this specification can also be based on different perspectives and applications, without departing substantially from
Various modifications and change are carried out under spirit of the invention.
Fig. 1 is a kind of structural schematic diagram of the equipment of spray fluidisation separation nitrogen oxides of the present invention, and Fig. 2 is the spray of the present invention
The bottom substance schematic diagram of the equipment of leaching fluidisation separation nitrogen oxides.As shown in Figures 1 and 2, a kind of spray fluidisation point of the present invention
Equipment from nitrogen oxides, including shell 7, are equipped with gas entrance 8 to be processed, and plant emissions are rich in the to be processed of nitrogen oxides
Gas by being located at the gas entrance 8 to be processed of shell side tangentially into shell 7, bottom be equipped with absorbing liquid spout 10 and into
Port 9 absorbs flow container 4 by delivery pump 3 and connects absorbing liquid spout 10, will absorb the strong basicity absorbing liquid in flow container 4 by defeated
It send pump 3 to be delivered in shell 7, is sprayed and entered in shell 7 from bottom to up by absorbing liquid spout 10, under the influence of gravity, indulge
It scatters, form countless adsorption liquid droplets and falls everywhere to the strong basicity adsorption liquid of penetrating, return the bottom of the shell 7, together
When air is blown into shell 7 by air inlet 9 by blower 1, blower 1 continues upward air blowing by air inlet 9, the absorption that will be fallen
Liquid mist drop is blown afloat upwards again, forms circulation, (12 are in figure as shown in the absorption liquid fluid line track 11 in Fig. 3 for streamline track
Air inlet schematic lines), so that adsorption liquid droplet is gathered entire shell 7, densely covered adsorption liquid droplet high-speed rotating is rich in nitrogen by tangential
The gas of oxide is persistently cut, make adsorb the breakup of drop recombination, sufficiently with gas reaction to be processed, maximum absorbed nitrogen
Oxide, purified gas are then discharged by the gas vent 11 on top.
Preferably, 7 internal upper part of shell is additionally provided with filter device 5, to remove denitrification to by the shell 7
Gas afterwards is discharged by gas vent 11 again after being filtered, and by filter device 5, the absorption drop carried secretly in gas can be by mistake
It filters under the filter of device 5.In the specific embodiment of the invention, the filter device 5 is filter screen, is set to the top of the shell 7
The lower section of the gas vent 11 in portion.
Preferably, several recycling for being set to 5 lower section of filter device at an angle are additionally provided in the shell 7
Baffle 6, to avoid excessive absorbing liquid drop is carried in purified gas secretly, and simultaneously to the absorption under being filtered by filter device 5
Drop carries out recycling aggregation, and specifically, recycling baffle 6 includes symmetrically arranged two pieces of overhead gages, and length can be used in the overhead gage
Cube structure is fixed on 7 inner wall of shell in 10-15 ° of level inclination obliquely respectively, and the junction with 7 inner wall of shell is
Connection absorbs the entrance of 4 pipeline of flow container, is collected into absorption flow container 4 again to recycle the absorption drop that baffle 6 is assembled
(it should be noted that the right-hand apron for recycling baffle 6 in figure connects also by pipeline and absorbs flow container 4, being only not shown in the figure), this
Invention is not only avoided that the excessive absorbing liquid drop of the gas after nitrogen oxides removes is entrained by setting recycling baffle 6, leads
It causes filter screen burden too heavy, while the absorbing liquid under filter screen filter can also be recycled, it is made to reenter absorbing liquid
In tank, the utilization efficiency of absorbing liquid is improved.It should be noted that the right-hand apron for recycling baffle 6 in figure is connected also by pipeline and is inhaled
Flow container 4 is received,
Preferably, two pieces of symmetrical lower baffle plates are also set up below 6 symmetrically arranged two pieces of overhead gages of Yu Huishou baffle, inclined
Obliquely, for aggravating airflow circulating, i.e., for improving loop condition below, gas to be processed is enable sufficiently to react, and
Reduce dead zone.In the specific embodiment of the invention, it is trapezoidal structure that section, which can be used, in lower baffle plate, and the small one end of area is fixed
In on 7 inner wall of shell, it is preferable that the junction of lower baffle plate and 7 inner wall of shell may be the entrance for absorbing 4 pipeline of flow container, with
Further recycling absorbs drop.
Preferably, it is provided with one-way cock 2 between the delivery pump 3 and absorbing liquid spout 10, in absorption flow container 4
The penetrating of strong basicity absorbing liquid is controlled；It is also equipped with one-way cock 2 between the blower 1 and port 9, to blow blower 1
Enter air to be controlled.
Preferably, the gas to be processed of different-diameter can be used in the equipment of the spray fluidisation separation nitrogen oxides of present invention spray
Entrance 8 and absorbing liquid spout 10, can handle the industrial gasses of different air quantity
Preferably, multiple equipment can be used in series by the equipment of multiple spray fluidisation separation nitrogen oxides of the present invention,
That is the gas of the gas vent of previous stage can be used as the gas to be processed that next stage enters entrance to be processed, remove nitrogen oxygen to improve
The efficiency of compound.
Cooperation Fig. 1, Fig. 2 and Fig. 3 illustrates the working principle of the invention below:
When working properly, the gas rich in nitrogen oxides of plant emissions is by gas entrance to be processed 8 tangentially into shell
7；It absorbs strong basicity absorbing liquid in flow container 4 simultaneously to be delivered in spray fluidisation denitrifying oxide separator 7 by delivery pump 3, the bottom of by
The absorbing liquid spout 10 in portion is sprayed from bottom to up into the shell 7, under the influence of gravity, the strong basicity longitudinally sprayed into
Adsorption liquid scatters everywhere, forms countless adsorption liquid droplets and falls, and returns spray fluidisation separator bottom, connects bottom at this time
Air is blown into the shell 7 by blower 1 by air inlet 9, continues upward air blowing, and the adsorption liquid droplet fallen is again upward
It blows afloat, forms circulation, adsorption liquid droplet is made to gather entire separator, densely covered adsorption liquid droplet high-speed rotating is rich in by tangential
The gas of nitrogen oxides is persistently cut, and is made to adsorb breakup of drop recombination, sufficiently with gas reaction to be processed, be absorbed to the greatest extent
Nitrogen oxides, the gas after denitrification is removed in the shell 7 are discharged after recycling baffle 6 and filter screen 5 from top, and
The absorption drop of entrainment by the filter of filter screen 5 it is lower after, be recovered the aggregation of baffle 6, collect to enter again and absorb in flow container 4, circulation benefit
With.
In the present invention, the flowing of oxides of nitrogen gas and strong basicity absorbing liquid itself forms centrifugal field and barometric gradient
, spray fluidisation is carried out by centrifugal field and barometric gradient field and is absorbed, and strong basicity absorbing liquid is fallen after rise by spray from bottom to top
Row rises again afterwards, forms circulation, and the cutting force tangential by oxides of nitrogen gas, comes into full contact with reaction, greatly promote
Assimilation effect.In the present invention, the obstruction that nitrogen oxides is subject to is less, therefore pressure drop needed for equipment is compared with same category of device pole
It is low.
Fig. 4 is a kind of step flow chart of the method for spray fluidisation separation nitrogen oxides of the present invention.As shown in figure 4, this hair
A kind of method of bright spray fluidisation separation nitrogen oxides, includes the following steps:
Step S1, the gas to be processed that will be enriched in nitrogen oxides are fluidized the tangential spray for separating the equipment of nitrogen oxides by spray
Enter.Specifically, by the gas rich in nitrogen oxides of plant emissions by the equipment gas entrance to be processed tangentially into
In the shell.
Strong basicity adsorption liquid is sprayed into the shell from the absorbing liquid spout of the device bottom by step S2.In the present invention
In specific embodiment, one-way cock is opened, the strong basicity absorbing liquid that configured in advance is good in flow container will be absorbed and be delivered to by delivery pump
The equipment is sprayed by absorbing liquid spout into the equipment from bottom to up, and the adsorption liquid droplet is revolved by tangential high speed
Turn the gas to be processed persistently to cut, make the broken recombination of adsorption liquid droplet, sufficiently with the gas reaction to be processed, and
Under the influence of gravity, the strong basicity adsorption liquid longitudinally sprayed into scatters everywhere, forms countless adsorption liquid droplets and falls, returns equipment
Bottom.
Step S3 continues upward air blowing by the air inlet of the device bottom using blower, the adsorption liquid droplet that will be fallen
Again it blows afloat upwards, forms circulation, so that adsorption liquid droplet is gathered entire separator, farthest to absorb in gas to be processed
Nitrogen oxides.Densely covered adsorption liquid droplet is persistently cut by the tangential high-speed rotating gas rich in nitrogen oxides, makes drop
Broken recombination, sufficiently with gas reaction to be processed, farthest absorbs the nitrogen oxides in gas to be processed.
Step S4, it is purified after gas then from the gas vent discharge at the top of the equipment.
Preferably, before step S4, a kind of method of spray fluidisation separation nitrogen oxides of the present invention, further includes walking as follows
It is rapid:
Before gas discharge, using a filter device to the gas after removing denitrification below the gas vent
It is filtered, the filter device is a filter screen, and by filter screen, the absorption drop carried secretly in gas will be filtered net filter
Under.
Preferably, a kind of method of spray fluidisation separation nitrogen oxides of the present invention, further includes following steps:
Suction using several recycling baffles being set to below the filter device to the entrainment under filter device filter
Attached liquid carries out recycling collection, is recycled in the absorption flow container, to recycle.The present invention not only can by setting recycling baffle
It avoids the excessive absorbing liquid drop of the gas after removing denitrification from being entrained, causes filter screen burden too heavy, while can also incite somebody to action
Absorbing liquid under filter screen filter is recycled, and is reentered it and is absorbed in flow container, improves the utilization efficiency of absorbing liquid
It will illustrate the present invention by an embodiment below:
Certain petro-chemical corporation catalytic unit burn CO burning boiler flue gas processing in, it is proposed, according to the invention, to flue gas into
NO in rowxIt is removed recycling, specific operation and effect are described as follows:
1. material properties and relevant parameter
The flow of catalytic cracking CO burning boiler flue gas is 128761Nm3/ h, initial temperature are 160 DEG C, and pressure is
5000Pa, NOXFor 700mg/Nm3, SO2For 1500mg/Nm3, H2O is 10.1%.
2. the spray of flue-gas denitrification oxide fluidizes denitrifying oxide separator
The spray fluidize denitrifying oxide separator be it is vertical, the spray fluidizes denitrifying oxide separator bottom and is equipped with
Gas vent after gas access to be processed, absorbing liquid spout, air inlet, purification absorbs liquid circulating device；Its bottom is connected to unidirectionally
Valve, circulating pump, blower；The absorbing liquid for absorbing flow container is delivered to the absorbing liquid of spray fluidisation denitrifying oxide separator by circulating pump
Spout, the recycling baffle absorbed in liquid circulating device are not only avoided that excessive absorbing liquid drop is entrained, filter screen are caused to be born
It is too heavy, while the absorbing liquid under filter screen filter can also be recycled, it reenters it and absorbs in flow container, improve and absorb
The utilization efficiency of liquid.
3. implementation process
The gas rich in nitrogen oxides of plant emissions enters spray fluidisation denitrifying oxide point by gas access to be processed
From device；It absorbs strong basicity absorbing liquid in flow container simultaneously to be delivered in spray fluidisation denitrifying oxide separator by delivery pump, by inhaling
Liquid spout is received to be sprayed from bottom to up into spray fluidisation denitrifying oxide separator；Air is blown into spray by air inlet by blower
It fluidizes in denitrifying oxide separator, the gas after removing denitrification is discharged after recycling baffle and filter screen, and carries secretly
Absorbing liquid drop by filter screen filter it is lower after, be recovered baffle aggregation, collect to enter again and absorb in flow container, spray fluidisation denitrogenation
Absorbing liquid drop in oxide separator after rising to maximum height four be scattered under, the gas weight that is then blown out in port
It newly takes up, cyclic absorption nitrogen oxides.
4. interpretation of result
The equipment for separating nitrogen oxides is fluidized by using leaching of the invention, the NO in flue gasxConcentration can be by 700mg/Nm3
It is reduced to 14mg/Nm above3Hereinafter, overall efficiency is 98% or more.It is compared with other techniques and device, this invention simplifies
System saves cost, can generate great economic benefit.Tests prove that the spray fluidisation separation nitrogen oxides of the present invention
Equipment can be in the case where being changed without absorbing liquid at continuous work 10 days or more.
In conclusion a kind of device and method of spray fluidisation separation nitrogen oxides of the present invention are strong in flow container by that will absorb
Alkaline absorption solution is sprayed by absorbing liquid spout from bottom to up into spray fluidisation denitrifying oxide separator, and will by blower
Air is blown into spray fluidisation denitrifying oxide separator by air inlet, so that strong basicity absorbing liquid recycles spray in separator
Leaching, absorption efficiency is high, so that oxides of nitrogen gas can come into full contact with absorbing liquid, improves assimilation effect；The present invention passes through
Using spray design from bottom to top and fluidisation design, reduce the total occupied area and gross investment of equipment.
Compared with prior art, the present invention has the advantage that
(1) using spray system from bottom to top, and fluidization technique has been used, has effectively increased the effect of denitrification
Fruit increases the treating capacity of oxides of nitrogen gas.
(2) (gas i.e. to be processed is through the invention for the operating pressure drop of the equipment of present invention spray fluidisation separation nitrogen oxides
Change in pressure drop after equipment clean), only 1-2kpa or so extremely low compared with other same categories of device.
(3) present invention can adjust the diameter of bottom stomata and spray orifice according to actual condition, be suitable for a variety of not existing together
The operating condition of qi-regulating amount.
(4) the desulfurization adsorption efficiency of single-stage spray fluidisation denitrifying oxide equipment of the invention is 98% or more, denitrogenation oxygen
NO after compoundxContent is up to 20mg/Nm3Below.
(5) present invention is small in size, reduces the total occupied area and gross investment of device.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.Any
Without departing from the spirit and scope of the present invention, modifications and changes are made to the above embodiments by field technical staff.Therefore,
The scope of the present invention, should be as listed in the claims.
Claims (10)
1. a kind of equipment of spray fluidisation separation nitrogen oxides, comprising:
Shell (7), is equipped with gas entrance (8) to be processed, and the gas to be processed of nitrogen-containing oxide passes through the gas entrance (8) to be processed
Tangentially into the shell (7), bottom is equipped with absorbing liquid spout (10) and air inlet (9), and top is equipped with gas vent
(11), the gas after purified is discharged from the gas vent (11)；
It absorbs flow container (4), is sprayed strong basicity absorbing liquid from bottom to up through the absorbing liquid spout (10) by delivery pump (3)
In into the shell (7), with the gas reaction to be processed, the strong basicity adsorption liquid longitudinally sprayed into is influenced in gravity
Under scatter to form countless adsorption liquid droplets and drop down onto the shell (7) bottom；
Blower (1) is blowed air into the shell (7) by the air inlet (9), and the adsorption liquid droplet fallen is upward
Blow afloat, formed circulation, so that adsorption liquid droplet is gathered the shell (7), the adsorption liquid droplet described in tangential high speed rotation to
Processing gas is persistently cut, and makes the broken recombination of adsorption liquid droplet, sufficiently with the gas reaction to be processed.
2. a kind of equipment of spray fluidisation separation nitrogen oxides as described in claim 1, it is characterised in that: the shell (7)
Internal upper part is additionally provided with filter device (5), with to after going the gas of denitrification to be filtered by the shell (7) by institute
State gas vent (11) discharge.
3. a kind of equipment of spray fluidisation separation nitrogen oxides as claimed in claim 2, it is characterised in that: the filter device
(5) it is filter screen, is set to below gas vent (11).
4. a kind of equipment of spray fluidisation separation nitrogen oxides as described in claim 1, it is characterised in that: the shell (7)
It is inside additionally provided with the recycling baffle (6) being placed in below the filter device (5), to the absorbing liquid under the filter device (5) filter
Drop carries out recycling aggregation, respectively recycles baffle (6) by pipeline and connects the absorption flow container (4), the absorption drop weight that will assemble
New collect enters in the absorption flow container (4).
5. a kind of equipment of spray fluidisation separation nitrogen oxides as described in claim 1, it is characterised in that: the recycling baffle
Including symmetrically arranged two pieces of overhead gages, each overhead gage is in that 10-15 ° of level inclination is fixed on obliquely on 7 inner wall of shell respectively,
The junction of itself and the shell (7) inner wall is the connection entrance for absorbing flow container (4) pipeline.
6. a kind of equipment of spray fluidisation separation nitrogen oxides as claimed in claim 5, it is characterised in that: on described two pieces
Two pieces of symmetrical lower baffle plates are also correspondingly arranged below baffle.
7. a kind of equipment of spray fluidisation separation nitrogen oxides as described in claim 1, it is characterised in that: multiple equipment
It is used in series, enters the to be processed of the entrance (8) to be processed for the gas of the gas vent (11) of previous stage as next stage
Gas, to improve the efficiency of removing nitrogen oxides.
8. a kind of method of spray fluidisation separation nitrogen oxides, includes the following steps:
The gas to be processed of nitrogen-containing oxide is tangentially sprayed into the equipment for being used to spray fluidisation separation nitrogen oxides by step S1；
Step S2 will absorb the strong basicity adsorption liquid in flow container from the device bottom and longitudinally spray into the equipment, the absorption
Liquid mist drop is persistently cut by the tangential high-speed rotating gas to be processed, makes the broken recombination of adsorption liquid droplet, sufficiently with it is described
Gas reaction to be processed, and the strong basicity adsorption liquid longitudinally sprayed into scatters everywhere under the effect of gravity, forms countless suctions
Attached liquid droplet simultaneously drops back into the device bottom；
Step S3 continues upward air blowing by the air inlet of the device bottom using blower, again by the adsorption liquid droplet fallen
It blows afloat upwards, forms circulation, so that adsorption liquid droplet is gathered inside the equipment, farthest to absorb the gas to be processed
In nitrogen oxides；
Step S4, it is purified after gas from the gas vent discharge at the top of the equipment.
9. a kind of method of spray fluidisation separation nitrogen oxides as claimed in claim 8, which is characterized in that in step S4 it
Before, further include following steps:
Before gas discharge, using a filter device to the gas progress after removing denitrification below the gas vent
Filtering.
10. a kind of method of spray fluidisation separation nitrogen oxides as claimed in claim 9, it is characterised in that: using being set to
Recyclable device below the filter device carries out recycling collection to the adsorption liquid of the entrainment under filter device filter, is recycled to
In the absorption flow container.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910529881.9A CN110141957A (en) | 2019-06-19 | 2019-06-19 | A kind of device and method of spray fluidisation separation nitrogen oxides |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910529881.9A CN110141957A (en) | 2019-06-19 | 2019-06-19 | A kind of device and method of spray fluidisation separation nitrogen oxides |
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| CN110141957A true CN110141957A (en) | 2019-08-20 |
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| CN201910529881.9A Withdrawn CN110141957A (en) | 2019-06-19 | 2019-06-19 | A kind of device and method of spray fluidisation separation nitrogen oxides |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115715928A (en) * | 2022-11-18 | 2023-02-28 | 江苏华南新能源科技有限公司 | Denitration equipment for gas turbine waste heat boiler |
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| CN210473568U (en) * | 2019-06-19 | 2020-05-08 | 众一伍德工程有限公司 | Equipment for separating nitrogen oxide by spraying fluidization |
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| US3299621A (en) * | 1964-06-15 | 1967-01-24 | Ajem Lab Inc | Rotary flow gas washer |
| CN1621128A (en) * | 2003-11-26 | 2005-06-01 | 株洲工学院帅科机械清洗研究所 | Upper sprinkling secondary refining gas purifying technology |
| US20080318431A1 (en) * | 2005-11-08 | 2008-12-25 | Tohoku University | Shower Plate and Plasma Treatment Apparatus Using Shower Plate |
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| CN109621662A (en) * | 2018-12-18 | 2019-04-16 | 河南科技大学 | A kind of equipment for denitrifying flue gas for coal-burning boiler |
| CN210473568U (en) * | 2019-06-19 | 2020-05-08 | 众一伍德工程有限公司 | Equipment for separating nitrogen oxide by spraying fluidization |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115715928A (en) * | 2022-11-18 | 2023-02-28 | 江苏华南新能源科技有限公司 | Denitration equipment for gas turbine waste heat boiler |
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