CN110465183A - A kind of device and its working method preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas - Google Patents
A kind of device and its working method preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas Download PDFInfo
- Publication number
- CN110465183A CN110465183A CN201910731375.8A CN201910731375A CN110465183A CN 110465183 A CN110465183 A CN 110465183A CN 201910731375 A CN201910731375 A CN 201910731375A CN 110465183 A CN110465183 A CN 110465183A
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- Prior art keywords
- fixedly connected
- alkaline absorbent
- nano level
- micro
- flue gas
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- 230000002745 absorbent Effects 0.000 title claims abstract description 94
- 239000002250 absorbent Substances 0.000 title claims abstract description 94
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 title claims abstract description 72
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003546 flue gas Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 230000010412 perfusion Effects 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 52
- 238000007599 discharging Methods 0.000 claims description 37
- 239000000872 buffer Substances 0.000 claims description 30
- 239000006166 lysate Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000003009 desulfurizing effect Effects 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000009837 dry grinding Methods 0.000 abstract description 5
- 238000000227 grinding Methods 0.000 abstract description 5
- 238000001238 wet grinding Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- XURIQWBLYMJSLS-UHFFFAOYSA-N 1,4,7,10-tetrazacyclododecan-2-one Chemical compound O=C1CNCCNCCNCCN1 XURIQWBLYMJSLS-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 241001625808 Trona Species 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of devices for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas, for the two kinds of grinding method existing defects of dry grinding and wet grinding for solving the problems, such as existing alkalinity material superfine powder.The present invention includes stirring and dissolving pond, stirring and dissolving is fixedly connected with perfusion tube on the left of pond, the left end of perfusion tube is fixedly connected with superfine powder manufacturing device, the left end of perfusion tube enters the inside of superfine powder manufacturing device, the left end bottom of perfusion tube is fixedly connected with ultrasonic atomizatio shower nozzle, metering pump is fixedly connected between superfine powder manufacturing device and stirring and dissolving pond on perfusion tube, the inner tip of superfine powder manufacturing device installs having heaters, the discharge outlet of superfine powder manufacturing device bottom end is fixedly connected with feeder pipe one, the bottom end of feeder pipe one is fixedly connected with the feed inlet of cyclone separator.Structure of the invention is scientific and reasonable, and manufactured alkaline absorbent grain diameter is small, good to the removal effect of sulfur trioxide in flue gas, is suitble to promote the use of.
Description
Technical field
The present invention relates to power environment protection field, it is specifically related to a kind of prepare micro/nano level alkaline absorbent removing flue gas three
The device of sulfur oxide.
Background technique
In the boiler flue of power plant, sulfur trioxide can be contained in the flue gas of boiler discharge, to the removing side of sulfur trioxide
Method has wet spraying technology and two kinds of dry method spraying technique at present, is exactly to absorb to the flue gas injection alkalinity in boiler smoke pipeline
Agent is reacted with sulfur trioxide by alkaline absorbent, then removes sulfur trioxide, such as application No. is 201821058001.1
Chinese patent, existing commercially available alkaline absorbent grain diameter is all larger, dv=100~250 μm, and alkaline absorbent particle is straight
If diameter is larger, it is unfavorable for reacting with sulfur trioxide in flue gas, therefore alkaline absorbent particle is ground, superfine powder
Grinding is divided into dry grinding and two kinds of wet grinding, and powder is ground to 8 μm or so by dry grinding most low energy, but ground
Cheng Zhong, powder temperature can rapidly rise because big energy imports, and after Particle pollution, grinding is also noted that explosion-proof ask
Topic；Wet grinding need to select abrasive media, dispersing agent and auxiliary agent etc. according to required partial size, and control the factors such as temperature, continuous powder
Time consuming needs a few houres even tens hours, and grinding tens times even up to a hundred times, therefore power plant will usually use circulating behaviour
Operation mode automates continuous operation to realize, occupied area is larger and generates noise pollution.It to be also sieved, be dehydrated, dry after wet-milling
Dry-cure obtains the minimum powder absorbent of dry partial size, just can be carried out injection, and process is relatively complicated, for this purpose, it is proposed that
A kind of device preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provides and a kind of prepare micro/nano level alkali
Property absorbent removing sulfur trioxide in flue gas device, solve it is existing alkalinity material superfine powder dry grinding and two kinds of wet grinding
The problem of grinding method existing defects.
Technical solution used by the present invention solves the above problems is: a kind of to prepare micro/nano level alkaline absorbent removing cigarette
The device of gas sulfur trioxide, including stirring and dissolving pond, it is characterised in that: be fixedly connected with infusion on the left of the stirring and dissolving pond
Pipe, the left end of the perfusion tube is fixedly connected with superfine powder manufacturing device, and the left end of perfusion tube enters superfine powder
The inside of manufacturing device, the left end bottom of the perfusion tube are fixedly connected with ultrasonic atomizatio shower nozzle, are located on the perfusion tube super
Metering pump, the inner tip of the superfine powder manufacturing device are fixedly connected between fine powder manufacturing device and stirring and dissolving pond
Having heaters is installed, the discharge outlet of superfine powder manufacturing device bottom end is fixedly connected with feeder pipe one, the feeder pipe
One bottom end is fixedly connected with the feed inlet of cyclone separator, and the discharge outlet of the cyclone separator bottom end is fixedly connected with
Feeder pipe two, two bottom end of feeder pipe are fixedly connected with the feed inlet of upper end on the right side of screw feeding device, the spiral charging dress
The discharge outlet for setting left side bottom end is fixedly connected with feeder pipe three, and solenoid valve, the feeder pipe are equipped on the feeder pipe three
Three bottom end is fixedly connected with the feed inlet of buffer bin, and the discharge outlet of bottom end is fixedly connected with discharge nozzle on the left of the buffer bin,
The bottom end of the discharge nozzle is fixedly connected with branch pipe, and the bottom end of the branch pipe is fixedly connected with discharging spray nozzle, the buffer bin
Right side is fixedly connected with air inlet pipe, and the air inlet pipe is fixedly connected with air pump far from one end of buffer bin.
Further, the ultrasonic atomizatio shower nozzle is equipped with multiple, and multiple ultrasonic atomizatio shower nozzles are uniformly fixed on infusion
The bottom end of pipe.
Further, piezoelectric ceramic atomizer patch is provided in the ultrasonic atomizatio shower nozzle.
Further, solenoid valve is installed on the branch pipe.
Further, the branch pipe and discharging spray nozzle are equipped with multiple, and multiple branch pipes and discharging spray nozzle match admittedly
Surely it is connected to the bottom end of discharge nozzle.
Further, the leading flank of the buffer bin is equipped with transparency window.
Whole device is first fixedly installed in the flue system of boiler by working method when in use, and the one of boiler flue
End is fixedly installed with economizer, one group of discharging spray nozzle will be fixedly connected in the pipeline between economizer and SCR reactor, by SCR
One group of discharging spray nozzle is fixedly connected in pipeline between reactor and air preheater, it will be solid in the pipeline between air preheater and electric precipitation
Surely one group of discharging spray nozzle is connected, one group of discharging spray nozzle, discharging spray nozzle will be fixedly connected in the pipeline between electric precipitation and desulfurizing tower
For grating type spray head, it can increase the contact area after alkaline absorbent sprays with flue gas, alkaline absorbent material and water be put into
In stirring and dissolving pond, alkaline absorbent is allowed to dissolve inside water, be then stirred, after being uniformly mixed, passes through metering pump
The lysate of alkaline absorbent is transported in superfine powder manufacturing device from perfusion tube, then allows the dissolution of alkaline absorbent again
Liquid is sprayed out of multiple ultrasonic atomizatio shower nozzles, is first opened heater before the lysate of alkaline absorbent sprays, is allowed ultra-fine
Temperature in powder manufacturing device increases, and is provided with piezoelectric ceramic atomizer patch in ultrasonic atomizatio shower nozzle, passes through ultrasonic vibration cavitation
Phenomenon allows the lysate droplet of alkaline absorbent to be cracked into the powder of minimum 200nm partial size, and powder is by high temperature drying,
Alkaline absorbent after atomization drying reaches micro/nano level, and the alkaline absorbent of micro/nano level enters whirlwind point from feeder pipe one
From in device, collecting to obtain dry micro/nano level alkaline absorbent, dry micro-nano by cyclone separator cyclonic separation
Meter level alkaline absorbent enters in screw feeding device from feeder pipe two, and then screw feeding device is by dry micro/nano level
Alkaline absorbent is transported at feeder pipe three, open feeder pipe three at solenoid valve, dry micro/nano level alkaline absorbent into
Enter into buffer bin, observed by transparency window, allows after the micro/nano level alkaline absorbent of the interior suitable drying of storage of buffer bin, close
Close the solenoid valve on feeder pipe three, open air pump, air pump by air inlet pipe to blowing in buffer bin, it is micro- by what is dried in buffer bin
Nanoscale alkaline absorbent is blown into branch pipe by discharge nozzle, then enters discharging spray nozzle from branch pipe, finally out of discharging spray nozzle
It sprays, is fixedly connected with solenoid valve on the branch pipe being connected with each discharging spray nozzle, opens and closes solenoid valve as needed
To control the pipe that the micro/nano level alkaline absorbent of multiple discharging spray nozzle jet dryings enters flue system different location respectively
In road, dry micro/nano level alkaline absorbent is injected into flue gas, and then dry micro/nano level alkaline absorbent is with flue gas
It is reacted completely and with the sulfur trioxide in flue gas by the deflector in flue with flue gas mixing, to remove sulfur trioxide, is done
Good dispersion of the dry micro/nano level alkaline absorbent in flue, and grain diameter is small, and opposite specific surface area is bigger, with three
The exposure level of sulfur oxide is higher, so that reaction effect is more preferable, flue gas after removing sulfur trioxide after desulfurizing tower is handled from
Chimney discharge.
Compared with prior art, the present invention having the following advantages that and effect: the present invention can be by way of ultrasonic atomizatio
Micro/nano level alkaline absorbent is formed, the dispersibility in flue is more preferable, and grain diameter is smaller, and opposite specific surface area is got over
Greatly, higher with the exposure level of sulfur trioxide, so that reaction effect is more preferable, relative to wet spraying technology, the technology of the present invention is not
The water content increased in flue gas will not cause flue tail to corrode to flue-gas temperature will not be caused to reduce, while entire dress
Setting can be with plug and play, and operating process is simple and convenient, and compared to dry grinding, the alkaline absorbent particle diameter made is more
Small, production alkaline absorbent particle process safety is reliable, and structure of the invention is scientific and reasonable, manufactured alkaline absorbent grain diameter
It is small, it is good to the removal effect of sulfur trioxide in flue gas, it is suitble to promote the use of.
Detailed description of the invention
Fig. 1 is that the apparatus structure for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas of the embodiment of the present invention shows
It is intended to.
Fig. 2 is that the device for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas of the embodiment of the present invention uses shape
State figure.
In figure: 1- stirring and dissolving pond, 2- perfusion tube, 3- metering pump, 4- superfine powder manufacturing device, 5- heater, 6- are super
Sound atomizer, 7- feeder pipe one, 8- cyclone separator, 9- feeder pipe two, 10- screw feeding device, 11- feeder pipe three,
12- solenoid valve, 13- buffer bin, 14- discharge nozzle, 15- branch pipe, 16- discharging spray nozzle, 17- air inlet pipe, 18- air pump, 19- boiler smoke
Road, 20- economizer, 21-SCR reactor, 22- air preheater, 23- electric precipitation, 24- desulfurizing tower, 25- chimney.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of the description present invention, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Referring to figs. 1 to Fig. 2 it is found that the micro/nano level alkaline absorbent for preparing in the present embodiment removes sulfur trioxide in flue gas
Device, including stirring and dissolving pond 1, stirring and dissolving pond 1 can carry out dissolution stirring, stirring and dissolving to alkaline absorbent material and water
The left side in pond 1 is fixedly connected with perfusion tube 2, and the left end of perfusion tube 2 is fixedly connected with superfine powder manufacturing device 4, and perfusion tube 2
Left end enter the inside of superfine powder manufacturing device 4, the left end bottom of perfusion tube 2 is fixedly connected with ultrasonic atomizatio shower nozzle 6,
Convenient for spraying the alkaline absorbent of micro/nano level, on perfusion tube 2 between superfine powder manufacturing device 4 and stirring and dissolving pond 1
It is fixedly connected with metering pump 3, convenient for alkaline absorbent solution is transported in ultrasonic atomizatio shower nozzle 6, superfine powder manufacturing device 4
Inner tip having heaters 5 is fixedly mounted, the discharge outlet of 4 bottom end of superfine powder manufacturing device is fixedly connected with feeder pipe one
7, the bottom end of feeder pipe 1 is fixedly connected with the feed inlet of cyclone separator 8, and the discharge outlet of 8 bottom end of cyclone separator is solid
Surely it is connected with feeder pipe 29, the bottom end of feeder pipe 29 is fixedly connected with the feed inlet of 10 right side upper end of screw feeding device, spiral
The discharge outlet of 10 left side bottom end of feeding device is fixedly connected with feeder pipe 3 11, is fixedly connected with solenoid valve on feeder pipe 3 11
12, the bottom end of feeder pipe 3 11 is fixedly connected with the feed inlet of buffer bin 13, and the discharge outlet of 13 left side bottom end of buffer bin is fixed to be connected
It is connected to discharge nozzle 14, the bottom end of discharge nozzle 14 is fixedly connected with branch pipe 15, and the bottom end of branch pipe 15 is fixedly connected with discharging spray nozzle 16,
The right side of buffer bin 13 is fixedly connected with air inlet pipe 17, and air inlet pipe 17 is fixedly connected with air pump 18 far from one end of buffer bin 13,
Air pump 18 can be blown in buffer bin 13 by air inlet pipe 17.
Ultrasonic atomizatio shower nozzle 6 is equipped with multiple, and multiple ultrasonic atomizatio shower nozzles 6 are uniformly fixed on the bottom end of perfusion tube 2, convenient for equal
The solution of even ejection alkaline absorbent；It is provided with piezoelectric ceramic atomizer patch in ultrasonic atomizatio shower nozzle 6, allows the molten of alkaline absorbent
Liquid can form micro/nano level alkaline absorbent by way of ultrasonic atomizatio；Solenoid valve 12 is fixedly connected on branch pipe 15, just
It is fed in individually control branch pipe 15；Branch pipe 15 and discharging spray nozzle 16 are respectively equipped with multiple, 16 phase of multiple branch pipes 15 and discharging spray nozzle
Matching is fixedly connected on the bottom end of discharge nozzle 14, and the pipeline convenient for the flue system different location to boiler carries out spray micro/nano level
Alkaline absorbent；The leading flank of buffer bin 13 is equipped with transparency window, convenient for the material stock situation in observation buffer bin 13.
Whole device is first fixedly installed in the flue system of boiler by working method when in use, boiler flue 19
One end is fixedly installed with economizer 20, and one group of discharging spray will be fixedly connected in the pipeline between economizer 20 and SCR reactor 21
First 16, one group of discharging spray nozzle 16 will be fixedly connected in the pipeline between SCR reactor 21 and air preheater 22, by air preheater 22 and electricity
One group of discharging spray nozzle 16 is fixedly connected in pipeline between dedusting 23, it will be fixed in the pipeline between electric precipitation 23 and desulfurizing tower 24
One group of discharging spray nozzle 16 is connected, discharging spray nozzle 16 is grating type spray head, can increase the contact after alkaline absorbent sprays with flue gas
Alkaline absorbent material and water are put into stirring and dissolving pond 1 by area, and alkaline absorbent material includes: NaHSO3、Mg(OH)2、
Ca(OH)2、NaHCO3And the absorbents such as trona, these absorbents can be individual one kind, be also possible to a variety of mixing
, it allows alkaline absorbent to dissolve inside water, is then stirred, after being uniformly mixed, absorbed alkalinity by metering pump 3
The lysate of agent is transported in superfine powder manufacturing device 4 from perfusion tube 2, then allows the lysate of alkaline absorbent from multiple again
It sprays in ultrasonic atomizatio shower nozzle 6, first opens heater 5 before the lysate of alkaline absorbent sprays, allow superfine powder system
It makes temperature in device 4 to increase, is provided with piezoelectric ceramic atomizer patch in ultrasonic atomizatio shower nozzle 6, by ultrasonic vibration cavitation phenomenon,
The lysate droplet of alkaline absorbent is allowed to be cracked into the powder of minimum 200nm partial size, and powder, by high temperature drying, atomization is dry
Alkaline absorbent after dry reaches micro/nano level, and the alkaline absorbent of micro/nano level enters cyclonic separation dress from feeder pipe 1
It sets in 8, collects to obtain dry micro/nano level alkaline absorbent by 8 cyclonic separation of cyclone separator, dry is micro-nano
Grade alkaline absorbent enters in screw feeding device 10 from feeder pipe 29, and then screw feeding device 10 is by dry micro-nano
Meter level alkaline absorbent is transported at feeder pipe 3 11, opens the solenoid valve 12 at feeder pipe 3 11, dry micro/nano level alkali
Property absorbent enter in buffer bin 13, observed by transparency window, allow the micro/nano level of the suitable drying of storage in buffer bin 13
After alkaline absorbent, the solenoid valve 12 on feeder pipe 3 11 is closed, opens air pump 18, air pump 18 is by air inlet pipe 17 to buffer bin
Blow in 13, micro/nano level alkaline absorbent dry in buffer bin 13 be blown into branch pipe 15 by discharge nozzle 14, then from
Branch pipe 15 enters discharging spray nozzle 16, finally sprays out of discharging spray nozzle 16, on the branch pipe 15 being connected with each discharging spray nozzle 16
It is all fixedly connected with solenoid valve 12, it is dry to control multiple injections of discharging spray nozzle 16 respectively to open and close solenoid valve 12 as needed
Dry micro/nano level alkaline absorbent enters in the pipeline of flue system different location, dry micro/nano level alkaline absorbent
It is injected into flue gas, then dry micro/nano level alkaline absorbent has been mixed by the deflector in flue with flue gas with flue gas
Sulfur trioxide reaction in Quan Bingyu flue gas, to remove sulfur trioxide, dry micro/nano level alkaline absorbent is in flue
Good dispersion, and grain diameter is small, and opposite specific surface area is bigger, higher with the exposure level of sulfur trioxide, to react
Effect is more preferable, and the flue gas after removing sulfur trioxide is discharged after the processing of desulfurizing tower 24 from chimney 25.Structure of the invention science is closed
Reason, manufactured alkaline absorbent grain diameter is small, good to the removal effect of sulfur trioxide in flue gas, is suitble to promote the use of.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology should belong to guarantor of the invention in made change without departing from the spirit and scope of the invention
Protect range.
Claims (7)
1. a kind of device for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas, including stirring and dissolving pond (1), special
Sign is: being fixedly connected with perfusion tube (2) on the left of the stirring and dissolving pond (1), the left end of the perfusion tube (2) is fixedly connected
Have superfine powder manufacturing device (4), and the left end of perfusion tube (2) enters the inside of superfine powder manufacturing device (4), it is described
The left end bottom of perfusion tube (2) is fixedly connected with ultrasonic atomizatio shower nozzle (6), and superfine powder is located on the perfusion tube (2) and is manufactured
It is fixedly connected between device (4) and stirring and dissolving pond (1) metering pump (3), the inside top of the superfine powder manufacturing device (4)
End installation having heaters (5), the discharge outlet of superfine powder manufacturing device (4) bottom end are fixedly connected with feeder pipe one (7),
The bottom end of the feeder pipe one (7) is fixedly connected with the feed inlet of cyclone separator (8), cyclone separator (8) bottom end
Discharge outlet be fixedly connected with feeder pipe two (9), feeder pipe two (9) bottom end is fixedly connected with screw feeding device (10) right side
The discharge outlet of the feed inlet of side upper end, screw feeding device (10) left side bottom end is fixedly connected with feeder pipe three (11),
It is equipped on the feeder pipe three (11) solenoid valve (12), the bottom end of the feeder pipe three (11) is fixedly connected with buffer bin (13)
The discharge outlet of feed inlet, buffer bin (13) left side bottom end is fixedly connected with discharge nozzle (14), the discharge nozzle (14)
Bottom end is fixedly connected with branch pipe (15), and the bottom end of the branch pipe (15) is fixedly connected with discharging spray nozzle (16), the buffer bin
(13) it is fixedly connected on the right side of air inlet pipe (17), the air inlet pipe (17) is fixedly connected with gas far from the one end of buffer bin (13)
It pumps (18).
2. the device according to claim 1 for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas, feature
Be: the ultrasonic atomizatio shower nozzle (6) be equipped with it is multiple, multiple ultrasonic atomizatio shower nozzles (6) are uniformly fixed on perfusion tube (2)
Bottom end.
3. the device according to claim 1 for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas, feature
It is: is provided with piezoelectric ceramic atomizer patch in the ultrasonic atomizatio shower nozzle (6).
4. the device according to claim 1 for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas, feature
It is: solenoid valve (12) is installed on the branch pipe (15).
5. the device according to claim 1 for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas, feature
Be: the branch pipe (15) and discharging spray nozzle (16) are equipped with multiple, multiple branch pipes (15) and discharging spray nozzle (16) phase
With the bottom end for being fixedly connected on discharge nozzle (14).
6. the device according to claim 1 for preparing micro/nano level alkaline absorbent removing sulfur trioxide in flue gas, feature
Be: the leading flank of the buffer bin (13) is equipped with transparency window.
7. it is a kind of as it is of any of claims 1-6 prepare micro/nano level alkaline absorbent removing sulfur trioxide in flue gas
The working method of device, it is characterised in that: when in use, first whole device is fixedly installed in the flue system of boiler, pot
One end of furnace flue (19) is fixedly installed with economizer (20), will be in the pipeline between economizer (20) and SCR reactor (21)
It is fixedly connected with one group of discharging spray nozzle (16), one group will be fixedly connected in the pipeline between SCR reactor (21) and air preheater (22)
Discharging spray nozzle (16) will be fixedly connected with one group of discharging spray nozzle (16) in the pipeline between air preheater (22) and electric precipitation (23), will
One group of discharging spray nozzle (16) is fixedly connected in pipeline between electric precipitation (23) and desulfurizing tower (24), discharging spray nozzle (16) is grid
Formula spray head can increase the contact area after alkaline absorbent sprays with flue gas, and it is molten that alkaline absorbent material and water are put into stirring
In Xie Chi (1), allows alkaline absorbent to dissolve inside water, be then stirred, after being uniformly mixed, pass through metering pump (3)
The lysate of alkaline absorbent is transported in superfine powder manufacturing device (4) from perfusion tube (2), then allows alkaline absorbent again
Lysate spray out of multiple ultrasonic atomizatio shower nozzles (6), first by heater (5) before the lysate of alkaline absorbent sprays
It opens, allows the temperature in superfine powder manufacturing device (4) to increase, be provided with piezoelectric ceramic atomizer patch in ultrasonic atomizatio shower nozzle (6),
By ultrasonic vibration cavitation phenomenon, the lysate droplet of alkaline absorbent is allowed to be cracked into the powder of minimum 200nm partial size, and
For powder by high temperature drying, the alkaline absorbent after atomization drying reaches micro/nano level, and the alkaline absorbent of micro/nano level is from blanking
Pipe one (7) enters in cyclone separator (8), collects to obtain dry micro-nano by cyclone separator (8) cyclonic separation
Meter level alkaline absorbent, dry micro/nano level alkaline absorbent enter in screw feeding device (10) from feeder pipe two (9),
Then dry micro/nano level alkaline absorbent is transported at feeder pipe three (11) by screw feeding device (10), opens feeder pipe
Solenoid valve (12) at three (11), dry micro/nano level alkaline absorbent are entered in buffer bin (13), are seen by transparency window
It examines, allows after the micro/nano level alkaline absorbent of the interior suitable drying of storage of buffer bin (13), close the electricity on feeder pipe three (11)
Magnet valve (12) is opened air pump (18), and air pump (18) is blown by air inlet pipe (17) in buffer bin (13), will be in buffer bin (13)
Dry micro/nano level alkaline absorbent is blown into branch pipe (15) by discharge nozzle (14), then enters discharging spray from branch pipe (15)
Head (16) is finally sprayed out of discharging spray nozzle (16), fixed on the branch pipe (15) being connected with each discharging spray nozzle (16) to connect
Solenoid valve (12) are connected to, open and close solenoid valve (12) as needed to control multiple discharging spray nozzles (16) jet drying respectively
Micro/nano level alkaline absorbent enter in the pipeline of flue system different location, dry micro/nano level alkaline absorbent quilt
It sprays into flue gas, then dry micro/nano level alkaline absorbent is mixed completely by the deflector in flue with flue gas with flue gas
And reacted with the sulfur trioxide in flue gas, to remove sulfur trioxide, dry micro/nano level alkaline absorbent is in flue
Good dispersion, and grain diameter is small, opposite specific surface area is bigger, and it is higher with the exposure level of sulfur trioxide, to react effect
Fruit is more preferable, and the flue gas after removing sulfur trioxide is discharged after desulfurizing tower (24) processing from chimney (25).
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