CN206935096U - A kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system - Google Patents
A kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system Download PDFInfo
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- CN206935096U CN206935096U CN201720829403.6U CN201720829403U CN206935096U CN 206935096 U CN206935096 U CN 206935096U CN 201720829403 U CN201720829403 U CN 201720829403U CN 206935096 U CN206935096 U CN 206935096U
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- cleaning solution
- defluorinate
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- spray
- tail gas
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Abstract
The utility model discloses a kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system, the composition of system includes preliminary defluorinate subsystem and spray scrubber defluorinate subsystem；The composition of preliminary defluorinate subsystem includes cleaning solution circulating collection groove, the straight tube washer being arranged on the Venturi scrubber and offgas outlet on cleaning solution circulating collection groove inlet exhaust gas, and detergent circulator；Spray scrubber defluorinate subsystem is made up of spray scrubber and scrubbing tower circulating pump, and spray scrubber upper space design spray thrower and demister, lower space are designed with washing liquid pool and distributor.Cleaning solution in preliminary defluorinate subsystem circulating cleaning solution circulating collection groove is pumped into by pump from washing liquid pool.Defluorinate processing is carried out to phosphoric acid tail gas using the utility model, defluorinate efficiency can be improved, it is high to wash the cleaning solution fluoro-containing concentration of discharge system, is easy to concentrate after-treatment, and system constitution equipment is few, and floor space is small, can greatly economize on resources and operating cost.
Description
Technical field
The utility model belongs to tail gas defluorination technology field, and in particular to a kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing
System.
Technical background
Waste gas containing fluoride typically refers to the industrial waste gas containing gaseous hydrogen fluoride, ocratation, mostlys come from chemical industry, smelting
The industries such as gold, building materials fluorine-containing ore such as calcines, melted, chemically reacting at the processing procedure at high temperature, for example with sulfuric acid decomposition phosphorus ore
Hydrogen fluoride (HF) gas that powder discharges, the ocratation (SiF that HF discharges with the silicon dioxde reaction in rock phosphate in powder4) gas
Body.A large amount of fluorinated tail gas are produced during phosphate fertilizer is produced using fluor-apatite, it is necessary to are acted upon.Villiaumite is industrially
Purposes is more and more wide, and importance is increasing.And main fluorine-containing ore-fluorite resource is worldwide all nearly withered
Exhaust.Contain substantial amounts of fluorine in phosphorus ore, therefore the demand that phosphate industry from now on must combine villiaumite is considered.
Current China phosphoric acid industry is broadly divided into wet-treating and the class of dry process two for the method for tail gas defluorinate processing.
Wet-treating is absorption cleaning method.HF is highly soluble in water into hydrofluoric acid, and hair can occur with many alkaline matters should generate fluoride salt.
Therefore, the fluoride in waste gas can easily be removed as absorbent using water or alkali lye, but need to consider corrosion pipeline,
The problems such as equipment blocks.Dry process is also referred to as adsorption cleaning method, is de- to realize using selective absorption of the adsorbent to fluorine
Fluorine, defluorinate efficiency high, technological process are simple.The active charcoal of conventional industrial adsorbents, activated alumina, molecular sieve, silica gel, silicon
Diatomaceous earth, zeolite etc..Though the problems such as Dry Adsorption does not have to consider burn into blocking, wastewater treatment, it is mainly for the treatment of fluorinated volume
Not high waste gas.
Number of patent application is 201420391756.9 patent document, discloses a kind of " a kind of defluorinate absorption tower system ",
Its structure includes absorption tower, circulating pump A, heat-exchanger rig, filter, circulating pump B and Fine spray shower nozzle.The defluorinate system is mainly
Absorption efficiency is improved by improving nozzle structure, absorbing liquid improves the re-absorption ability of absorbing liquid by cooling down and filtering.System
Simple in construction, stable operation is efficient.But the system does not consider recycling for fluorine-containing treatment fluid, treatment fluid need to carry out secondary place
Reason, the problems such as operating cost height, waste of resource be present.
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 wet method
Phosphoric acid tail gas Two-way Cycle defluorinate processing system, to improve defluorinate efficiency, it is secondary to concentrate to obtain the higher treatment fluid of fluorinated volume
Processing, system equipment and floor space are reduced, economized on resources and operating cost.
For above-mentioned purpose, phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system provided by the utility model, it forms bag
Include preliminary defluorinate subsystem and spray scrubber defluorinate subsystem；The composition of the preliminary defluorinate subsystem circulates including cleaning solution
Collecting tank, the straight tube washing being arranged on the Venturi scrubber and offgas outlet on cleaning solution circulating collection groove inlet exhaust gas
Device, and detergent circulator, the cleaning solution circulating collection groove be designed with the cleaning solution import of secondary defluorinate system connectivity,
Cleaning solution loop exit and cleaning solution outlet, the outlet of detergent circulator and the cleaning solution shower nozzle set in two washers
Connection, import connect with the loop exit on cleaning solution circulating collection groove, and pending fluorinated tail gas is by Venturi scrubber
Air inlet enter Venturi scrubber, after first time primary wash pass through by cleaning solution circulating collection groove enter straight tube washing
Device, spray scrubber defluorinate subsystem is entered after second of primary wash；
The spray scrubber defluorinate subsystem is made up of spray scrubber and scrubbing tower circulating pump, the spray scrubber
Tower body on be designed with cleaning solution and add mouth, cleaning solution loop exit, cleaning solution outlet, pending inlet exhaust gas and purified gas
Outlet, tower internal upper part spatial design have a spray thrower and the demister above spray thrower, and lower space, which is designed with, in tower washes
Wash liquid pool and positioned at washing liquid pool overhead gas distributor, the import of scrubbing tower circulating pump and washing positioned at washing pool location
The connection of liquid loop exit is washed, the tail gas after preliminary defluorinate subsystem defluorinate processing positioned at washing liquid pool ullage by treating
Handle inlet exhaust gas to enter in tower, enter spray washing space and the washing sprayed by spray thrower shower nozzle through gas distributor
Fluorine in liquid haptoreaction abjection tail gas, defluorinate purification gas up to standard discharge tower after demister foam removal by purified gas outlet
Outer to enter air, the cleaning solution for having adsorbed fluorine component enters washing liquid pool by gas distributor, and preliminary defluorinate subsystem circulation is washed
The cleaning solution washed in liquid circulating collection groove is pumped into by pump from washing liquid pool.
Above-mentioned defluorinate processing system is additionally provided with cleaning solution holder, by be provided with the pipeline of control valve respectively with just
Washing in the cleaning solution leakage fluid dram and spray scrubber defluorinate subsystem on cleaning solution circulating collection groove in step defluorinate subsystem
Wash the connection of liquid outlet.
Above-mentioned Venturi scrubber and straight tube washer, which is erect, to be arranged on cleaning solution circulating collection groove top and covers, respectively by
The detergent circulator being each equipped with provides cleaning solution.
The cleaning solution shower nozzle of above-mentioned Venturi scrubber is arranged on the position for making its spout be located at venturi throat.
The cleaning solution import on cleaning solution circulating collection groove in above-mentioned preliminary defluorinate subsystem is by being provided with control valve
Pipeline and spray scrubber defluorinate subsystem in scrubbing tower circulating pump outlet.
Spray thrower is made up of 2-3 layers of spray head layer in above-mentioned spray scrubber defluorinate subsystem, every layer of spray head layer respectively by
Some equally distributed shower nozzles are formed.
Upper lower nozzle mutual dislocation is set between above-mentioned adjacent spray head layer.
Above-mentioned each spray head layer of spray thrower provides cleaning solution by same scrubbing tower circulating pump.
It is provided by the utility model to carry out defluorinate processing side using above-mentioned phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system
Method, it is using potassium hydroxide solution as defluorinate cleaning solution, takes preliminary defluorinate subsystem and spray scrubber defluorinate subsystem to wet
Tail gas caused by method production process of phosphoric acid carries out defluorinate；In preliminary defluorinate subsystem, using being arranged on cleaning solution circulating collection
Straight tube washer on Venturi scrubber and outlet conduit on groove inlet pipeline, for from spray scrubber defluorinate subsystem
Cleaning solution, pass through the fluorinated tail gas of the scrubbed device of shower nozzle circulative convection set in two washers using detergent circulator
Washed；
In spray scrubber defluorinate subsystem, the tail gas purified from preliminary defluorinate subsystem through preliminary defluorinate enters spray
Scrubbing tower lower wash liquid pool superjacent air space is drenched, fresh wash liquid adds mouth by the cleaning solution on tower body and is added to positioned at tower
In the washing liquid pool of inner bottom part, the tail gas into spray scrubber lower wash liquid pool superjacent air space is passed through above washing liquid pool
Gas distributor enter washing defluorinate space, cleaning solution is pumped into the spray positioned at tower internal upper part space by scrubbing tower circulating pump
Device, sprayed, the abundant haptoreaction of tail gas with entering washing defluorinate space, washed by forming the equally distributed shower nozzle of spray thrower
The fluorine in abjection tail gas is washed, defluorinate purification gas up to standard is discharged after demister foam removal by purified gas outlet to be entered greatly outside tower
Gas, the cleaning solution after circulation washing enter washing liquid pool, preliminary defluorinate subsystem cleaning solution circulating collection groove by gas distributor
Interior cleaning solution is pumped into by washing liquid pool.
When the mass concentration of fluorine in purification gas is more than 9mg/m3When, by preliminary defluorinate subsystem cleaning solution circulating collection groove
Middle part cleaning solution discharge, then the circulating cleaning solution that spray scrubber defluorinate subsystem is washed in liquid pool are pumped into cleaning solution and followed
Ring collecting tank, mouth is finally added by the cleaning solution on tower body again and adds fresh cleaning solution；Or first spray scrubber is taken off
Fluorine subsystem washing liquid pool in circulating cleaning solution by cleaning solution outlet part discharge, after again by the washing on tower body
Liquid adds mouth and adds fresh cleaning solution, and mass transfer power is washed with enhancing.
Now, as preferable, it is also an option that when fluorine in the tail gas that preliminary defluorinate subsystem purifies through preliminary defluorinate
Mass concentration is more than 40mg/m3When, part cleaning solution in preliminary defluorinate subsystem cleaning solution circulating collection groove is discharged, then will spray
Circulating cleaning solution in leaching scrubbing tower defluorinate subsystem washing liquid pool is pumped into cleaning solution circulating collection groove, finally again by positioned at tower
Cleaning solution on body adds mouth and adds fresh cleaning solution.
Cleaning solution is partly discharged and divided from spray scrubber defluorinate from preliminary defluorinate subsystem cleaning solution circulating collection groove
System washing liquid pool inside points discharge, is all that cleaning solution is discharged in cleaning solution holder, with concentrate carry out after-treatment or
As byproduct.
By the purification gas up to standard of the defluorinate outside scrubbing tower purified gas outlet discharge tower, arranged preferably by blower fan, chimney
Put to air.
The fluorinated tail gas is adjusted before Venturi scrubber is entered to the temperature, pressure, fluorinated volume of waste gas containing fluoride
Section, waste gas containing fluoride temperature control is at 60~70 DEG C, 15~20mg/m of fluorinated volume3.The regulation of waste gas containing fluoride temperature typically by
Duct section cooling is handled, and pressure regulation is that fluorinated volume regulation is by blasting fresh air by flow control valve.
The utility model has the advantages that：
1st, the utility model substantially increases tail gas defluorinate rate using the fluorine in Two-way Cycle defluorination process abjection phosphoric acid tail gas
With the fluoro-containing concentration of cleaning solution, be advantageous to fluorine-containing cleaning solution and focus on, or directly using the cleaning solution of high fluorine concentration as by-product
Product, effective recycling resource, reduce operating cost.
2nd, the relatively low cleaning solution of fluoro-containing concentration in scrubbing tower is passed into the washing of preliminary defluorinate subsystem by the utility model
In liquid circulating collection groove, compared with Venturi scrubber cleaning solution self-circulation technology in the prior art, cleaning solution can be greatly improved
Funing tablet, can more favourable resource recycling and reduce operating cost.
3rd, the utility model controls fresh wash liquid in scrubbing tower to be passed through by detecting the fluorinated volume of waste gas containing fluoride, to wash
Circulating cleaning solution of the cleaning solution in tower after circulation washing as preliminary defluorinate subsystem is washed, is washed with fresh cleaning solution through washing
Tail gas after washing, fresh tail gas is washed with the cleaning solution after circulation washing in scrubbing tower, can not only ensure that fluorinated tail gas processing reaches
To discharge standard, and the cleaning solution fluoro-containing concentration of discharge system is substantially increased, be advantageous to fluorine-containing cleaning solution and utilize and processing.
Brief description of the drawings
Fig. 1 is the overall structure diagram of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system described in the utility model.
In figure, 1- spray scrubbers, the pending inlet exhaust gas of 1A-, 1B- purified gas outlets, 2- Venturi scrubbers, 3-
Cleaning solution circulating collection groove, 4- straight tube washers, 5- cleaning solution holders, 6- tail gas funnels, 7- scrubbing tower circulating pumps, 8- first
Detergent circulator, the detergent circulators of 9- second, 10- blower fans, 11- demisters, 12- gas distributors, 13- cleaning solutions add
Mouthful, 14- cleaning solution loop exits, 15- cleaning solution outlets.
Embodiment
Provide embodiment of the present utility model below in conjunction with the accompanying drawings, and by embodiment the utility model is made into
The detailed description of one step, but this does not imply that being the restriction to scope of protection of the utility model.
Embodiment 1
The phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system of the present embodiment, its structure is as shown in figure 1, forming is included tentatively
Defluorinate subsystem, spray scrubber defluorinate subsystem and cleaning solution holder 5；The composition of the preliminary defluorinate subsystem includes washing
Liquid circulating collection groove 3 is washed, is arranged on the Venturi scrubber 2 and offgas outlet on cleaning solution circulating collection groove inlet exhaust gas
Straight tube washer 4, and detergent circulator (the first detergent circulator 8, the second detergent circulator 9), the venturi
Washer 2 and straight tube washer 4, which are erect, to be arranged on the top cover of cleaning solution circulating collection groove 3, the cleaning solution circulating collection groove 3
It is designed with and the cleaning solution import of secondary defluorinate system connectivity, cleaning solution loop exit and cleaning solution outlet, the first cleaning solution
The outlet of circulating pump 8, the second detergent circulator 9 connects with the cleaning solution shower nozzle set in two washers, import and washing
Loop exit connection on liquid circulating collection groove 3, the cleaning solution shower nozzle of Venturi scrubber 2, which is arranged on, makes its spout be located at literary mound
The position of Li Guan throats, pending fluorinated tail gas enter Venturi scrubber by the air inlet on Venturi scrubber 2, through
Passed through after primary wash and straight tube washer 4 is entered by cleaning solution circulating collection groove 3, spray is entered after second of primary wash
Scrubbing tower defluorinate subsystem；
The spray scrubber defluorinate subsystem is made up of spray scrubber 1 and scrubbing tower circulating pump 7, the spray washing
Cleaning solution is designed with the tower body of tower and adds mouth 13, cleaning solution loop exit 14, cleaning solution outlet 15, pending inlet exhaust gas
1A and purified gas outlet 1B, under tower internal upper part spatial design has spray thrower and the demister 11 above spray thrower, tower interior
Portion's spatial design has washing liquid pool and positioned at washing liquid pool overhead gas distributor 12, and the import of scrubbing tower circulating pump 7 is with being located at
The cleaning solution loop exit 14 of washing pool location connects, and spray thrower is by 2 layers of spray head layer in spray scrubber defluorinate subsystem
Form, every layer of spray head layer is respectively made up of some equally distributed shower nozzles；Upper lower nozzle mutual dislocation between adjacent spray head layer
Set；Each spray head layer of spray thrower provides cleaning solution by same scrubbing tower circulating pump 7, is handled through preliminary defluorinate subsystem defluorinate
Tail gas afterwards is entered by entering positioned at the pending inlet exhaust gas 1A of washing liquid pool ullage in tower through gas distributor 12
The fluorine in tail gas is deviate from spray washing space with cleaning solution haptoreaction spray by spray thrower shower nozzle, up to standard net of defluorinate
Change gas and discharged after the foam removal of demister 11 by purified gas outlet 1B and enters air outside tower, adsorbed the cleaning solution of fluorine component by
Gas distributor, which enters, washs liquid pool, the cleaning solution import on cleaning solution circulating collection groove 3 in the preliminary defluorinate subsystem
By being provided with the outlet of the pipeline of control valve and the scrubbing tower circulating pump 7 in spray scrubber defluorinate subsystem, tentatively
Cleaning solution in defluorinate subsystem circulating cleaning solution circulating collection groove 3 is pumped into by pump from washing liquid pool.
The cleaning solution holder 5, by be provided with the pipeline of control valve respectively with washing in preliminary defluorinate subsystem
The cleaning solution leakage fluid dram washed on liquid circulating collection groove connects with the cleaning solution outlet 15 in spray scrubber defluorinate subsystem.
Defluorination processing method is carried out using above-mentioned phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system, is molten with potassium hydroxide
Liquid is defluorinate cleaning solution, takes preliminary defluorinate subsystem and spray scrubber defluorinate subsystem to produce Wet-process Phosphoric Acid Production process
Tail gas carry out defluorinate；Before Venturi scrubber is entered, the temperature of waste gas containing fluoride, exhaust gas volumn, fluorinated volume are adjusted, contained
The control of fluorine EGT is at 60 DEG C, fluorinated volume 20mg/m3, exhaust gas volumn 65000m3/ h, in preliminary defluorinate subsystem, using setting
The straight tube washer 4 on the Venturi scrubber 2 and outlet conduit on the inlet pipeline of cleaning solution circulating collection groove 3 is put, is used for
From the cleaning solution of spray scrubber defluorinate subsystem, detergent circulator (the first detergent circulator 8, the second cleaning solution are used
Circulating pump 9) washed by the fluorinated tail gas of the scrubbed device of shower nozzle circulative convection set in two washers；
In spray scrubber defluorinate subsystem, the tail gas purified from preliminary defluorinate subsystem through preliminary defluorinate enters spray
The lower wash liquid pool superjacent air space of scrubbing tower 1 is drenched, fresh wash liquid adds mouth 13 by the cleaning solution on tower body and added in place
In in the washing liquid pool of tower inner bottom part, into the lower wash liquid pool superjacent air space of spray scrubber 1 tail gas through being located at cleaning solution
Gas distributor 12 above pond enters washing defluorinate space, and cleaning solution is pumped into empty positioned at tower internal upper part by scrubbing tower circulating pump 7
Between spray thrower, sprayed by forming the equally distributed shower nozzle of spray thrower, the tail gas with entering washing defluorinate space fully connects
Reaction is touched, the fluorine in tail gas is deviate from washing, and defluorinate purification gas up to standard is after the foam removal of demister 11, via net on scrubbing tower
Change gas outlet 1B to be passed into blast pipe, be pumped into by blower fan 10 in tail gas funnel 6 and be emitted into air, washing after circulation washing
Wash liquid and washing liquid pool is entered by gas distributor 12, cleaning solution is by washing in preliminary defluorinate subsystem cleaning solution circulating collection groove 3
Liquid pool is pumped into.
When the mass concentration of fluorine in purification gas is more than 9mg/m3When, by preliminary defluorinate subsystem cleaning solution circulating collection groove
Part cleaning solution is discharged to cleaning solution holder 5 in 3, then spray scrubber defluorinate subsystem is washed to the circulation washing in liquid pool
Liquid is pumped into cleaning solution circulating collection groove 3, and finally adding mouth 13 by the cleaning solution on tower body again adds fresh cleaning solution；
Or first discharge the circulating cleaning solution in spray scrubber defluorinate subsystem washing liquid pool by the part of cleaning solution outlet 15, after
Mouth 13 is added by the cleaning solution on tower body again and adds fresh cleaning solution, mass transfer power is washed with enhancing.
Also the addition and discharge of following manner control cleaning solution can be used, i.e., when net through the preliminary preliminary defluorinate of defluorinate subsystem
The mass concentration of fluorine is more than 40mg/m in the tail gas of change3When, will partly it be washed in preliminary defluorinate subsystem cleaning solution circulating collection groove
Wash liquid and be discharged to cleaning solution holder 5, then spray scrubber defluorinate subsystem is washed into the circulating cleaning solution in liquid pool and is pumped into
Cleaning solution circulating collection groove, mouth is finally added by the cleaning solution on tower body again and adds fresh cleaning solution.
Cleaning solution in preliminary defluorinate subsystem cleaning solution circulating collection groove by partly discharging and by spray scrubber defluorinate point
System washing liquid pool inside points discharge, be all by cleaning solution be discharged in cleaning solution holder using pending after-treatment or as
Byproduct.
By the defluorination processing method of embodiment 1, purified gas fluoride concentration is less than 9mg/m3, defluorinate rate is more than
55%.
Claims (8)
1. a kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system, it is characterised in that composition includes preliminary defluorinate subsystem and spray
Drench scrubbing tower defluorinate subsystem；The composition of the preliminary defluorinate subsystem includes cleaning solution circulating collection groove (3), is arranged on washing
The straight tube washer (4) on Venturi scrubber (2) and offgas outlet on liquid circulating collection groove inlet exhaust gas, and cleaning solution
Circulating pump (8,9), the cleaning solution circulating collection groove (3) are designed with and the cleaning solution import of secondary defluorinate system connectivity, washing
Liquid loop exit and cleaning solution outlet, the outlet of detergent circulator (8,9) are sprayed with the cleaning solution set in two washers
Head connection, import connect with the loop exit on cleaning solution circulating collection groove (3), and pending fluorinated tail gas is by Venturi scrubbing
Air inlet on device (2) enters Venturi scrubber, passes through after first time primary wash and is entered by cleaning solution circulating collection groove (3)
Straight tube washer (4), spray scrubber defluorinate subsystem is entered after second of primary wash；
The spray scrubber defluorinate subsystem is made up of spray scrubber (1) and scrubbing tower circulating pump (7), the spray washing
Cleaning solution is designed with the tower body of tower and adds mouth (13), cleaning solution loop exit (14), cleaning solution outlet (15), pending tail
Gas import (1A) and purified gas outlet (1B), tower internal upper part spatial design have spray thrower and the demister above spray thrower
(11), lower space is designed with washing liquid pool and positioned at washing liquid pool overhead gas distributor (12), scrubbing tower circulating pump in tower
(7) import connects with positioned at the cleaning solution loop exit (14) of washing pool location, at preliminary defluorinate subsystem defluorinate
Tail gas after reason positioned at the pending inlet exhaust gas (1A) of washing liquid pool ullage by entering in tower, through gas distributor
(12) fluorine in tail gas, defluorinate are deviate from the cleaning solution haptoreaction sprayed by spray thrower shower nozzle into spray washing space
Purification gas up to standard is discharged after demister (11) foam removal by purified gas outlet (1B) enters air outside tower, has adsorbed fluorine group
The cleaning solution divided is entered by gas distributor washs liquid pool, in preliminary defluorinate subsystem circulating cleaning solution circulating collection groove (3)
Cleaning solution is pumped into by pump from washing liquid pool.
2. phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system according to claim 1, it is characterised in that defluorinate processing system
System is additionally provided with cleaning solution holder (5), by be provided with the pipeline of control valve respectively with washing in preliminary defluorinate subsystem
The cleaning solution leakage fluid dram washed on liquid circulating collection groove connects with the cleaning solution outlet (15) in spray scrubber defluorinate subsystem.
3. phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system according to claim 2, it is characterised in that Venturi scrubbing
Device (2) and straight tube washer (4), which are erect, to be arranged on cleaning solution circulating collection groove (3) top cover, is washed respectively by what is be each equipped with
Wash liquid circulating pump (8,9) and cleaning solution is provided.
4. phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system according to claim 3, it is characterised in that Venturi scrubbing
The cleaning solution shower nozzle of device (2) is arranged on the position for making its spout be located at venturi throat.
5. phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system according to claim 4, it is characterised in that preliminary defluorinate point
The cleaning solution import on cleaning solution circulating collection groove (3) in system is taken off by being provided with the pipeline of control valve with spray scrubber
The outlet of scrubbing tower circulating pump (7) in fluorine subsystem.
6. the phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system according to one of claim 1 to 5, it is characterised in that spray
Spray thrower is made up of 2-3 layers of spray head layer in leaching scrubbing tower defluorinate subsystem, and every layer of spray head layer is respectively by some equally distributed
Shower nozzle is formed.
7. phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system according to claim 6, it is characterised in that adjacent spray head layer
Between upper lower nozzle mutual dislocation set.
8. phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system according to claim 7, it is characterised in that spray thrower respectively sprays
Head layer provides cleaning solution by same scrubbing tower circulating pump (7).
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| CN201720829403.6U CN206935096U (en) | 2017-07-10 | 2017-07-10 | A kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system |
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| CN201720829403.6U CN206935096U (en) | 2017-07-10 | 2017-07-10 | A kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107185379A (en) * | 2017-07-10 | 2017-09-22 | 临沂圣大环保工程有限公司 | A kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system and processing method |
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| CN107185379A (en) * | 2017-07-10 | 2017-09-22 | 临沂圣大环保工程有限公司 | A kind of phosphoric acid by wet process tail gas Two-way Cycle defluorinate processing system and processing method |
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