CN206935095U - A kind of nitrate method phosphoric acid tail gas defluorinate denitration process system - Google Patents
A kind of nitrate method phosphoric acid tail gas defluorinate denitration process system Download PDFInfo
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- CN206935095U CN206935095U CN201720828828.5U CN201720828828U CN206935095U CN 206935095 U CN206935095 U CN 206935095U CN 201720828828 U CN201720828828 U CN 201720828828U CN 206935095 U CN206935095 U CN 206935095U
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- dislodger
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Abstract
The utility model provides a kind of nitrate method phosphoric acid tail gas defluorinate denitration process system, and system, which is formed, includes a Venturi scrubbing subsystem, spray column washing subsystem and secondary Venturi scrubbing subsystem；The spray column washing subsystem is made up of spray scrubber and scrubbing tower circulating pump, Venturi scrubbing subsystem includes first circulation dislodger, the straight tube washer and first circulation pump being arranged on the first Venturi scrubber on first circulation dislodger inlet exhaust gas and outlet, the secondary Venturi scrubbing subsystem includes second circulation dislodger, pot type washer and the second circulation pump being arranged on the second Venturi scrubber and gas outlet on second circulation dislodger air inlet.Defluorinate denitration process is carried out to nitrate method phosphoric acid tail gas using the utility model, defluorinate denitration efficiency is substantially increased, has saved cost of investment, operating cost and floor space.
Description
Technical field
The utility model belongs to phosphoric acid by wet process tail gas defluorinate denitration technology field, and in particular to a kind of nitrate method phosphoric acid tail gas
Defluorinate denitration process system.
Background technology
The production of nitrate method phosphoric acid makees raw material using phosphorus ore mostly, and this phosphorus ore is mainly by fluorapatite (Ca5F
(PO4)3) composition, also part of silica.Phosphorus ore and nitric acid are after the reaction of acidolysis groove, and the fluorine in gas phase is mainly with ocratation
(SiF4) form presence, it can also produce nitrogen dioxide (NO containing partially fluorinated hydrogen (HF), the decomposition of concentrated nitric acid simultaneously2) gas, because
SiF is mainly contained in this acidolysis groove tail gas4、HF、NO2Deng pernicious gas.These pernicious gases pollute environment and to the health of human body
Huge threat is caused, therefore, in today that environmental requirement is increasingly strict, processing and recovery profit to nitrate method phosphoric acid tail gas
With particularly important.
The handling process method of nitrate method phosphoric acid tail gas mainly has calcium method, sodium method and potassium method at present, and calcium method mainly uses carbon
Sour calcium and calcium hydroxide make absorbent, because calcium carbonate method absorption efficiency is low, investment is big, so chemical industry acid tail gas is main at present
Calcium hydroxide is used as absorbent, but makes that absorbent investment is larger, and scaling degree is high, easy plug nozzle of calcium hydroxide,
Cause the removal efficiency step-down of spray column.Sodium method mainly makees absorbent with sodium carbonate and sodium hydroxide, but the raw material of sodium method
Cost is too high, does not typically use sodium method to be used as handling process.Potassium method mainly makees absorbent with potassium carbonate and potassium hydroxide,
It is relatively low that nitrate method phosphoric acid tail gas investment cost is handled with potassium method, and scaling degree is relatively low, can make full use of having in cleaning solution
Nutrient is imitated to produce nitro-compound fertilizer.
Number of patent application 201520426447.5, the utility model of entitled " a kind of efficiently phosphoric acid tail gas wash mill " are special
Profit, its structure include alkali lye configured slot, cleaning solution circulating slot and multiple scrubbing towers etc., although can by valve and circulating pump come
Control washing concentration of slurry, reduce the usage amount of alkali lye, so as to avoid some wastes, but cannot be guaranteed that washing slurries exist
It is uniformly distributed in multiple scrubbing towers, wastes the efficiency of a part of scrubbing tower, and multiple scrubbing towers are connected and cause floor space
Greatly increase, cost also accordingly increases.
Utility model content
The purpose of this utility model be exactly for it is above-mentioned the problems of in the prior art and deficiency, there is provided a kind of nitric acid
Method phosphoric acid tail gas defluorinate denitration process system, to improve defluorinate denitration efficiency, even concentration of the spray cleaning solution in system
And controllable, effectively save cost of investment, operating cost and floor space, the defluorinate of the nitrate method phosphoric acid tail gas after system is handled
Efficiency >=80%, denitration efficiency >=40%, reach discharging standards.
To achieve the above object, the utility model adopts the following technical scheme that.
A kind of nitrate method phosphoric acid tail gas defluorinate denitration process system, including Venturi scrubbing subsystem, a spray column are washed
Wash subsystem and secondary Venturi scrubbing subsystem；The spray column washs subsystem by spray scrubber and scrubbing tower circulating pump
Form, the spray scrubber internal upper part spatial design has a spray thrower and the demister above spray thrower, and bottom is empty in tower
Between be designed with cleaning solution hydrops room and the gas distributor above hydrops room, import and the hydrops room of scrubbing tower circulating pump
Circulating cleaning solution outlet, the tail gas after a Venturi scrubbing subsystem defluorinate denitration process is by positioned at hydrops room liquid level
The air inlet of top enters in tower, enters spray washing space by gas distributor, is washed with what is sprayed by spray thrower shower nozzle
The fluorine and nitre in liquid haptoreaction abjection tail gas are washed, the purification gas after defluorinate denitration is after demister foam removal by the row at tower top end
Outlet discharge, enters secondary Venturi scrubbing subsystem by pipeline, has adsorbed fluorine, the cleaning solution of nitre component by gas distributor
Into hydrops room；
Venturi scrubbing subsystem includes first circulation dislodger, is arranged on first circulation dislodger tail gas and enters
The straight tube washer and first circulation pump on the first Venturi scrubber and outlet on mouth, the first circulation dislodger are set
In respect of the interface tube, cleaning solution loop exit and precipitation outlet connected with spray column washing subsystem hydrops room, first circulation
The outlet of pump connects with the shower nozzle set in two washers, and import and the cleaning solution loop exit of first circulation dislodger connect
Logical, the air inlet of the first Venturi scrubber connects with pending fluorinated tail gas source, and the gas outlet of straight tube washer passes through pipeline
Connected with the inlet exhaust gas of spray column washing subsystem hydrops room ullage, pending fluorinated tail gas is washed through the first venturi
After washing primary wash defluorinate denitration of device, straight tube washer is entered by first circulation dislodger, through secondary primary wash defluorinate
Enter spray column washing subsystem after denitration, the cleaning solution after washing flows into first circulation dislodger；
The secondary Venturi scrubbing subsystem includes second circulation dislodger, is arranged on second circulation dislodger air inlet
On the second Venturi scrubber and gas outlet on pot type washer and second circulation pump, the second circulation dislodger sets
In respect of the interface tube, cleaning solution loop exit and precipitation outlet connected with spray column washing subsystem hydrops room, second circulation
The outlet of pump connects with the shower nozzle set in two washers, and import and the cleaning solution loop exit of second circulation dislodger connect
Logical, the air inlet of the second Venturi scrubber connects with spray column washing subsystem purified gas outlet, is washed from spray column
The purified gas of subsystem is washed after the washing defluorinate denitration purification of the second Venturi scrubber by second circulation dislodger into pot type
Device is washed, the purified gas after washing defluorinate denitration purification again, by the demister foam removal for being arranged on pot type washer shower nozzle rear
Heel row amplifies gas.
Above-mentioned processing system is additionally provided with the cleaning solution being made up of cleaning solution make-up tank and delivery pump and adds system, delivery pump
Import connected with cleaning solution make-up tank, outlet is washed subsystem hydrops room with spray column and connected, or with secondary Venturi scrubbing
Subsystem second circulation dislodger connects.
Above-mentioned first Venturi scrubber and straight tube washer, which are erect, to be arranged on first circulation dislodger top cover.
Above-mentioned second Venturi scrubber and pot type washer, which are erect, to be arranged on second circulation dislodger top cover.
Of first circulation dislodger and secondary Venturi scrubbing subsystem in an above-mentioned Venturi scrubbing subsystem
Two cyclic deposition grooves can be two independent cyclic deposition grooves, or same cyclic deposition groove be separated into by dividing plate two
Individual part, two logical positions of even same cyclic deposition groove.
Spray thrower in above-mentioned spray column washing subsystem is made up of 2-3 layers of spray head layer, if every layer of spray head layer respectively by
Dry equally distributed shower nozzle is formed.Upper lower nozzle mutual dislocation is set between adjacent spray head layer.Each spray head layer of spray thrower respectively by
The circulating pump being each equipped with provides cleaning solution.
It is provided by the utility model that defluorinate denitration process is carried out with above-mentioned nitrate method phosphoric acid tail gas defluorinate denitration process system
Method, it is using potassium hydroxide solution as defluorinate denitration cleaning solution, takes the Venturi scrubbing subsystem, spray column washing point to be
System and secondary Venturi scrubbing subsystem carry out defluorinate denitration to tail gas caused by nitrate method production process of phosphoric acid；On once literary mound
In wash subsystem in, using on the first Venturi scrubber and outlet conduit being arranged in first circulation dislodger import
Straight tube washer, cleaning solution is pumped into the scrubbed device of shower nozzle circulative convection set in two washers using first circulation pump and come
Washed from fluorine-containing nitre tail gas caused by nitrate method production process of phosphoric acid；
In spray column washs subsystem, the tail gas from the preliminary defluorinate denitration purification of a Venturi scrubbing subsystem enters
Enter spray scrubber lower wash liquid hydrops room superjacent air space, cleaning solution is added to positioned at the cleaning solution hydrops room of tower inner bottom part
Interior, the tail gas into spray scrubber bottom hydrops room ullage space enters through the gas distributor above hydrops room
Defluorinate space is washed, cleaning solution is pumped into the spray thrower positioned at tower internal upper part space by scrubbing tower circulating pump, equal by forming spray thrower
The shower nozzle of even distribution sprays, the abundant haptoreaction of tail gas with entering washing defluorinate space, fluorine in washing abjection tail gas,
Nitre, defluorinate denitration purified gas are discharged into secondary text after the demister foam removal above spray thrower by purified gas outlet
Subsystem is washed in mound, the cleaning solution after washing enters hydrops room by gas distributor；
In secondary Venturi scrubbing subsystem, using the Venturi scrubber being arranged in second circulation dislodger import
With the pot type washer in outlet, cleaning solution is pumped into the shower nozzle circulative convection set in two washers using second circulation pump
Scrubbed device carries out further defluorinate purification from spray column washing subsystem purified gas, again purified gas
Air, the second circulation dislodger that cleaning solution is flowed into below washer are discharged through foam removal.
When the pH value of cleaning solution in the cleaning solution hydrops room of spray scrubber is less than 5.2, after circulation defluorinate denitration
Cleaning solution is discharged from defluorinate denitration process system, adds fresh cleaning solution, and mass transfer power is washed with enhancing.
The purified gas again discharges air through foam removal, refers to that the tail gas for being up to discharge standard is sent into by blower fan
Tail gas funnel is emitted into air.
The potassium hydroxide wash configured in cleaning solution make-up tank, its mass concentration general control is in 18~22% models
Enclose.
During the utility model carries out defluorinate denitration using potassium hydroxide wash to phosphoric acid tail gas, in phosphoric acid tail gas
HF and potassium hydroxide reaction generation potassium fluoride, the SiF in phosphoric acid tail gas4Generation potassium fluosilicate precipitation is reacted with potassium hydroxide,
NO in phosphoric acid tail gas2Generation potassium nitrate and potassium nitrite are reacted with potassium hydroxide, potassium nitrite is in the more condition of air capacity
Under can aoxidize generation potassium nitrate.
The utility model has the advantages that：
1. the utility model washs subsystem and secondary Venturi scrubbing by a Venturi scrubbing subsystem, spray column
Subsystem carries out defluorinate denitration process to phosphoric acid tail gas, and tail gas washs through five circulations, makes what nitrogen oxides and fluoride were handled
More thoroughly, the treatment effeciency of whole system is also greatly improved.
2. the spray thrower of washer is made up of 2-3 layers of spray head layer in the utility model spray column washing subsystem, adjacent spray
Upper lower nozzle mutual dislocation is set between head layer, and each spray head layer provides cleaning solution by the circulating pump being each equipped with respectively, makes washing
Liquid be uniformly distributed in scrubbing tower and flow through each spray head layer flow it is equal, and make on scrubbing tower section almost substantially uniformity
Ground is sprayed, and effectively improves operating efficiency, improves the utilization rate of cleaning solution.
3. system provided by the utility model compared with multitower train, reduces floor space and greatly reduced, save
Space.
4. the addition of fresh potassium hydroxide wash is by cleaning solution in scrubbing tower in the utility model processing method
PH value automatically controls, and is precisely controlled the quantity delivered of potassium hydroxide wash, it is ensured that carry out to system steady and continuous,
Cost effectively is reduced, improves the utilization rate of cleaning solution, reduces power consumption.
5. discharging fluorine-containing nitre cleaning solution in the utility model processing method, it can be used for producing nitro-compound fertilizer, realize money
The comprehensive utilization in source.
Brief description of the drawings
Fig. 1 is the overall structure diagram of nitrate method phosphoric acid tail gas defluorinate denitration process system described in the utility model.
In figure, the Venturi scrubbers of 1- first, 2A- first circulation dislodgers, 2B- second circulation dislodgers, 3- delivery pumps,
4- cleaning solution make-up tanks, 4A- medicament adding mouths, 5- spray scrubbers, 5A- gas distributors, 5B- spray throwers, 5C- demisters,
5D- scrubbing tower circulating pumps, 6- straight tube washers, the Venturi scrubbers of 7- second, 8- pot type washers, 9- blower fans, 10- exhaust smokes
Chimney, 11- flow valves, 12- process water adding mouths.
Embodiment
Embodiment is provided below in conjunction with the accompanying drawings and the utility model is described in further detail by embodiment.But need
To be pointed out, embodiment is not meant to be any restriction to scope of protection of the utility model.
As shown in figure 1, a kind of nitrate method phosphoric acid tail gas defluorinate denitration process system, including a Venturi scrubbing point is
System, spray column washing subsystem, secondary Venturi scrubbing subsystem and the washing being made up of cleaning solution make-up tank 4 and delivery pump 3
Liquid adds system.
The spray column washing subsystem is made up of spray scrubber 5 and scrubbing tower circulating pump 5D, the spray scrubber 5
Internal upper part spatial design has a spray thrower 5B and the demister 5C above spray thrower, and lower space is designed with cleaning solution product in tower
Liquid room and the gas distributor 5A above hydrops room, it is provided between gas distributor 5A and spray thrower 5B and supplies adding technology water
Process water adding mouth 12；Cleaning solution hydrops room is designed with fresh wash liquid and adds mouth, circulating cleaning solution outlet, washs liquid precipitate
Floss hole and it is designed with inlet exhaust gas in cleaning solution ullage space；Scrubbing tower circulating pump 5D import and the circulation of hydrops room
Cleaning solution outlet, outlet and spray thrower inlet communication；Spray thrower 5B in spray column washing subsystem is by 2 layers of spray head layer structure
Into every layer of spray head layer is respectively made up of some equally distributed shower nozzles, and upper lower nozzle mutual dislocation is set between adjacent spray head layer
Put, each spray head layer of spray thrower provides cleaning solution by the circulating pump being each equipped with respectively, through a Venturi scrubbing subsystem defluorinate
Tail gas after denitration process enters spray washing by entering positioned at the air inlet of hydrops room ullage in tower by gas distributor
Space, fluorine and nitre in tail gas are deviate from the cleaning solution haptoreaction sprayed by spray thrower 5B shower nozzles, after defluorinate denitration
Purification gas is discharged after demister 5C foam removals by the outlet at tower top end, and entering secondary Venturi scrubbing point by pipeline is
System, has adsorbed fluorine, the cleaning solution of nitre component enters hydrops room by gas distributor；
Venturi scrubbing subsystem includes first circulation dislodger 2A, is arranged on first circulation dislodger tail gas
The straight tube washer 6 and first circulation pump on the first Venturi scrubber 1 and outlet in import, the first Venturi scrubber
1 and straight tube washer 6 erect and be arranged on first circulation dislodger 2A top covers, the first circulation dislodger 2A be designed with
Interface tube, cleaning solution loop exit and precipitation outlet, the first circulation pump that spray column washing subsystem hydrops room connects go out
Mouth connects with the shower nozzle set in two washers, and import connects with first circulation dislodger 2A cleaning solution loop exit, the
The air inlet of one Venturi scrubber 1 connects with pending fluorinated tail gas source, and the gas outlet of straight tube washer 6 passes through pipeline and spray
The inlet exhaust gas connection of tower washing subsystem hydrops room ullage is drenched, pending fluorinated tail gas is through the first Venturi scrubber
After 1 primary wash defluorinate denitrations, straight tube washer 6 is entered by first circulation dislodger 2A, through secondary primary wash defluorinate
Enter spray column washing subsystem after denitration, the cleaning solution after washing flows into first circulation dislodger 2A；
The secondary Venturi scrubbing subsystem includes second circulation dislodger 2B, is arranged on second circulation dislodger 2B and enters
The second Venturi scrubber 7 on gas port and pot type washer 8 and second circulation pump on gas outlet, the second Venturi scrubbing
Device 7 and pot type washer 8, which are erect, to be arranged on second circulation dislodger 2B top covers, and the second circulation dislodger 2B is designed with
Interface tube, the cleaning solution loop exit connected with spray column washing subsystem hydrops room, and in a Venturi scrubbing subsystem
First circulation dislodger 2A and the second circulation dislodger 2B of secondary Venturi scrubbing subsystem be same cyclic deposition groove
Two positions, share one precipitation outlet, second circulation pump outlet with two washers in setting shower nozzle connect, enter
Mouth is connected with second circulation dislodger 2B cleaning solution loop exit, and the air inlet of the second Venturi scrubber 7 is washed with spray column
The connection of subsystem purified gas outlet is washed, the purified gas from spray column washing subsystem is washed through the second Venturi scrubber 7
Pot type washer 8 is entered by second circulation dislodger 2B after defluorinate denitration purification, it is net after washing defluorinate denitration purification again
Change gas, gas is amplified by the demister foam removal heel row for being arranged on the shower nozzle rear of pot type washer 8.
The cleaning solution being made up of cleaning solution make-up tank 4 and delivery pump 3 adds system, and import and the cleaning solution of delivery pump 3 are matched somebody with somebody
Groove 4 processed connects, and outlet connects with spray column washing subsystem hydrops room and is provided with flow valve 11；Cleaning solution make-up tank 4 is provided with
Medicament adding mouth 4A.
Above-mentioned nitrate method phosphoric acid tail gas defluorinate denitration process system carries out defluorinate denitration process method, is molten with potassium hydroxide
Liquid is defluorinate denitration cleaning solution, takes a Venturi scrubbing subsystem, spray column washing subsystem and secondary Venturi scrubbing
Subsystem carries out defluorinate denitration to tail gas caused by nitrate method production process of phosphoric acid；In a Venturi scrubbing subsystem, adopt
With the straight tube washer 6 on the first Venturi scrubber 1 and outlet conduit being arranged in first circulation dislodger 2A imports, make
Cleaning solution is pumped into the scrubbed device of shower nozzle circulative convection set in two washers with first circulation pump and comes from nitrate method phosphoric acid
Fluorine-containing nitre tail gas is washed caused by production process；
In spray column washs subsystem, the tail gas from the preliminary defluorinate denitration purification of a Venturi scrubbing subsystem enters
Enter the lower wash liquid hydrops room superjacent air space of spray scrubber 5, fresh wash liquid is added to the cleaning solution product positioned at tower inner bottom part
In liquid room, the tail gas into the bottom hydrops room ullage space of spray scrubber 5 is distributed through the gas above hydrops room
Device 5A enters washing defluorinate space, and cleaning solution is pumped into the spray thrower 5B positioned at tower internal upper part space by scrubbing tower circulating pump 5D, by
Form the equally distributed shower nozzles of spray thrower 5B to spray, the abundant haptoreaction of tail gas with entering washing defluorinate space, washing
Deviate from fluorine, the nitre in tail gas, defluorinate denitration purified gas is after the demister 5C foam removals above spray thrower 5B by purified gas
Outlet is discharged into secondary Venturi scrubbing subsystem, and the cleaning solution after washing enters hydrops room by gas distributor, via
The cleaning solution internal circulating load of scrubbing tower circulating pump supply is 28~30m3/h；
In secondary Venturi scrubbing subsystem, using the Venturi scrubbing being arranged in second circulation dislodger 2B imports
Pot type washer 8 on device 7 and outlet, cleaning solution is pumped into the shower nozzle circulation set in two washers using second circulation pump
The scrubbed device of convection current carries out further defluorinate purification from spray column washing subsystem purified gas, after purifying again
Gas is sent into tail gas funnel 10 by blower fan 9 through foam removal and is emitted into air, and cleaning solution flows into second be located at below washer and followed
Ring dislodger 2B.
When the pH value of cleaning solution in the cleaning solution hydrops room of spray scrubber 5 is less than 5.2, after circulation defluorinate denitration
Cleaning solution is discharged from defluorinate denitration process system, adds fresh cleaning solution, and mass transfer power, potassium hydroxide washing are washed with enhancing
Liquid concentration is 18~22%, and intake is 9~11kg/h.
Claims (8)
- A kind of 1. nitrate method phosphoric acid tail gas defluorinate denitration process system, it is characterised in that including a Venturi scrubbing subsystem, Spray column washs subsystem and secondary Venturi scrubbing subsystem；Spray column washing subsystem by spray scrubber (5) and Scrubbing tower circulating pump (5D) is formed, and spray scrubber (5) the internal upper part spatial design has spray thrower (5B) and positioned at spray thrower The demister (5C) of top, lower space is designed with cleaning solution hydrops room and the gas distributor above hydrops room in tower (5A), the import of scrubbing tower circulating pump (5D) and the circulating cleaning solution outlet of hydrops room, it is through a Venturi scrubbing point Tail gas after defluorinate denitration process of uniting is entered by gas distributor and sprayed by entering positioned at the air inlet of hydrops room ullage in tower Scrubbing space is drenched, fluorine and nitre in tail gas, defluorinate are deviate from the cleaning solution haptoreaction sprayed by spray thrower (5B) shower nozzle Purification gas after denitration is discharged after demister (5C) foam removal by the outlet at tower top end, enters secondary venturi by pipeline Subsystem is washed, has adsorbed fluorine, the cleaning solution of nitre component enters hydrops room by gas distributor；Venturi scrubbing subsystem includes first circulation dislodger (2A), is arranged on first circulation dislodger tail gas and enters The first Venturi scrubber (1) on mouth and the straight tube washer (6) in outlet and first circulation pump, the first circulation are sunk Product groove (2A) is designed with interface tube, cleaning solution loop exit and the precipitation connected with spray column washing subsystem hydrops room and discharged Mouthful, the outlet of first circulation pump is connected with the shower nozzle set in two washers, and import is washed with first circulation dislodger (2A's) The connection of liquid loop exit is washed, the air inlet of the first Venturi scrubber (1) connects with pending fluorinated tail gas source, straight tube washer (6) inlet exhaust gas that gas outlet washs subsystem hydrops room ullage by pipeline with spray column connects, and pending contains Fluorine tail gas is entered straight after (1) the primary wash defluorinate denitration of the first Venturi scrubber by first circulation dislodger (2A) Pipe washer (6), enters spray column washing subsystem after secondary primary wash defluorinate denitration, and cleaning solution after washing flows into the One cyclic deposition groove (2A)；The secondary Venturi scrubbing subsystem includes second circulation dislodger (2B), is arranged on second circulation dislodger (2B) and enters The pot type washer (8) and second circulation pump on the second Venturi scrubber (7) and gas outlet on gas port, described second follows Ring dislodger (2B) is designed with interface tube, cleaning solution loop exit and the precipitation connected with spray column washing subsystem hydrops room and arranged Outlet, the outlet of second circulation pump connect with the shower nozzle set in two washers, import and second circulation dislodger (2B) Cleaning solution loop exit connects, air inlet and the spray column washing subsystem purified gas outlet of the second Venturi scrubber (7) Connection, the purified gas from spray column washing subsystem is after the second Venturi scrubber (7) washing defluorinate denitration purification by the Two cyclic deposition grooves (2B) enter pot type washer (8), the purified gas after washing defluorinate denitration purification again, by being arranged on tank The demister foam removal heel row amplification gas at formula washer (8) shower nozzle rear.
- 2. nitrate method phosphoric acid tail gas defluorinate denitration process system according to claim 1, it is characterised in that be provided with by washing Wash the cleaning solution that liquid make-up tank (4) and delivery pump (3) are formed and add system, import and the cleaning solution make-up tank (4) of delivery pump (3) Connection, outlet are washed subsystem hydrops room with spray column and connected, or with secondary Venturi scrubbing subsystem second circulation dislodger (2A) is connected.
- 3. nitrate method phosphoric acid tail gas defluorinate denitration process system according to claim 1, it is characterised in that the first venturi Washer (1) and straight tube washer (6), which are erect, to be arranged on first circulation dislodger (2A) top cover.
- 4. nitrate method phosphoric acid tail gas defluorinate denitration process system according to claim 1, it is characterised in that the second venturi Washer (7) and pot type washer (8), which are erect, to be arranged on second circulation dislodger (2B) top cover.
- 5. the nitrate method phosphoric acid tail gas defluorinate denitration process system according to one of Claims 1-4, it is characterised in that one The second circulation deposition of first circulation dislodger (2A) and secondary Venturi scrubbing subsystem in secondary Venturi scrubbing subsystem Groove (2B) is two positions of same cyclic deposition groove, shares a precipitation outlet.
- 6. the nitrate method phosphoric acid tail gas defluorinate denitration process system according to one of Claims 1-4, it is characterised in that spray Spray thrower (5B) in leaching tower washing subsystem is made up of 2-3 layers of spray head layer, and every layer of spray head layer is respectively uniformly distributed by some Shower nozzle form.
- 7. nitrate method phosphoric acid tail gas defluorinate denitration process system according to claim 6, it is characterised in that adjacent spray head layer Between upper lower nozzle mutual dislocation set.
- 8. nitrate method phosphoric acid tail gas defluorinate denitration process system according to claim 7, it is characterised in that spray thrower respectively sprays Head layer provides cleaning solution by the circulating pump being each equipped with respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828828.5U CN206935095U (en) | 2017-07-10 | 2017-07-10 | A kind of nitrate method phosphoric acid tail gas defluorinate denitration process system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720828828.5U CN206935095U (en) | 2017-07-10 | 2017-07-10 | A kind of nitrate method phosphoric acid tail gas defluorinate denitration process system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158918A (en) * | 2017-07-10 | 2017-09-15 | 临沂圣大环保工程有限公司 | A kind of nitrate method phosphoric acid tail gas defluorinate denitration process system and processing method |
| CN110270197A (en) * | 2019-06-28 | 2019-09-24 | 贵州开磷集团矿肥有限责任公司 | A kind of washing system of phosphoric acid extraction tail gas |
-
2017
- 2017-07-10 CN CN201720828828.5U patent/CN206935095U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107158918A (en) * | 2017-07-10 | 2017-09-15 | 临沂圣大环保工程有限公司 | A kind of nitrate method phosphoric acid tail gas defluorinate denitration process system and processing method |
| CN110270197A (en) * | 2019-06-28 | 2019-09-24 | 贵州开磷集团矿肥有限责任公司 | A kind of washing system of phosphoric acid extraction tail gas |
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