CN109879255A - A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid - Google Patents
A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid Download PDFInfo
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- CN109879255A CN109879255A CN201910346601.0A CN201910346601A CN109879255A CN 109879255 A CN109879255 A CN 109879255A CN 201910346601 A CN201910346601 A CN 201910346601A CN 109879255 A CN109879255 A CN 109879255A
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- acid
- purification
- tower
- circulating tank
- sulfuric acid
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 52
- 229910052683 pyrite Inorganic materials 0.000 title claims abstract description 27
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000011028 pyrite Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 136
- 238000000746 purification Methods 0.000 claims abstract description 129
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims abstract description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003546 flue gas Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000007670 refining Methods 0.000 claims abstract description 28
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 12
- 239000003517 fume Substances 0.000 claims abstract description 11
- 238000010521 absorption reaction Methods 0.000 claims description 32
- 239000007789 gas Substances 0.000 claims description 27
- 239000007921 spray Substances 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 19
- 238000005273 aeration Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 18
- 230000008676 import Effects 0.000 claims description 15
- 239000007791 liquid phase Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000004941 influx Effects 0.000 claims description 3
- 238000005276 aerator Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- -1 iron ion Chemical class 0.000 abstract description 3
- 235000011149 sulphuric acid Nutrition 0.000 abstract description 3
- 239000001117 sulphuric acid Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000005864 Sulphur Substances 0.000 description 5
- 235000019504 cigarettes Nutrition 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a kind of system and methods of pyrite-based sulfuric acid production system production refined sulfuric acid, it is related to chemical technology field, upper end perforation including purification acid tower and the purification acid tower is connected with the first exhaust smoke outlet, and the lower end side for refining acid tower is equipped with into flue gas mouth, one end perforation into flue gas mouth is connected with into fume pipe, described into flue gas mouth and into the air valve A being equipped between fume pipe for controlling the sulfur trioxide flue gas amount of being discharged into.The design will refine sour flow passage components and serve as a contrast tetrafluoro, reduce the iron dissolved in acid, purification acid concentration is adjusted using deionized water again, and it is come out using dry air by the free sulur dioxide stripping dissolved in acid is refined, the sulfur dioxide concentration that dissociates in acid is reduced, the industrial sulphuric acid impurity content for solving traditional pyrite-based sulfuric acid production production is higher, and especially iron ion and free sulur dioxide is exceeded, the problem of sour quality requirements of purification are not achieved, reduce economic value.
Description
Technical field
The present invention relates to chemical technology field, the system of specifically a kind of pyrite-based sulfuric acid production system production refined sulfuric acid and side
Method.
Background technique
Pyrite deposit is mainly to be formed under endogenic action.Also it is worth in addition, coal sulphur deposits the yellow sulphur mine mineral deposit to be formed
It must utilize.In the magma of earth depths ot-yet-hardened contain a large amount of sulphur, when igneous invasion arrive the earth's crust when, due to pressure reduction
, therefore sulphur contained in magma drives off and.The present invention is exactly a kind of production system for pyrite-based sulfuric acid production.
But the industrial sulphuric acid impurity content of traditional pyrite-based sulfuric acid production production is higher, especially iron ion and free dioxy
It is exceeded to change sulphur, the sour quality requirements of purification are not achieved, reduce economic value.Therefore, those skilled in the art provide a kind of sulphur
Iron ore acid making system produces the system and method for refined sulfuric acid, to solve the problems mentioned in the above background technology.
Summary of the invention
The purpose of the present invention is to provide a kind of system and methods of pyrite-based sulfuric acid production system production refined sulfuric acid, to solve
The problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme: a kind of pyrite-based sulfuric acid production system production refined sulfuric acid
System, the upper end perforation including purification acid tower and the purification acid tower is connected with first row for discharging sulfur trioxide flue gas
Flue gas mouth, and the lower end side for refining acid tower is equipped with into flue gas mouth, it is described to be connected with into the perforation of one end of flue gas mouth into flue gas
Pipe, it is described into flue gas mouth and into the air valve A being equipped between fume pipe for controlling the sulfur trioxide flue gas amount of being discharged into, the purification
The upper end of acid tower is connected with first grade absorption tower by the perforation of the first exhaust smoke outlet, and the upper end of the first grade absorption tower is connected with second
Exhaust smoke outlet, the lower end of the purification acid tower are equipped with purification acid tower liquid outlet, and one end of the purification acid tower liquid outlet passes through
Pipeline perforation is connected with circulating tank inlet, and the lower end perforation of the circulating tank inlet is connected with the sour circulating tank of purification, described
The one side perforation for refining sour circulating tank is connected with air inlet, and refines and be equipped between sour circulating tank and air inlet for controlling
The air valve B of gas influx, the upper end for refining sour circulating tank row of being equipped at a side position of circulating tank inlet
The escape pipe of deflation body, and the upper end for refining sour circulating tank is equipped at another side position of circulating tank inlet for infusing
Enter the water inlet of deionized water, the upper end for refining sour circulating tank is equipped at a side position of water inlet sends purification outside
The purification acid outlet of acid, one end perforation of the escape pipe are connected with tail gas absorption tank, the upper end installation of the tail gas absorption tank
There is exhaust outlet, the upper end of the sour outlet of purification is connected with the sour holding vessel of purification by pipeline perforation, described to refine the upper of acid tower
End side is provided with the sour import of purification, and described one end for refining sour import is described by pipeline and purification acid outlet perforation connection
Liquid valve A is installed between the outlet of purification acid and the sour import of purification.
As a further solution of the present invention: the inner upper end of the purification acid tower is equipped with fluid pipeline, and refines acid
The lower end for being internally located at fluid pipeline of tower is provided with spray head, and the circulating tank inlet and purification acid tower liquid outlet pass through pipe
Road perforation connection.
As further scheme of the invention: the spray head is at least provided with five, and spray head and fluid pipeline
Perforation connection, the fluid pipeline and spray head are distributed in the inside of purification acid tower in a ring, and fluid pipeline and purification acid into
Mouth perforation connection.
As further scheme of the invention: side position of the upper end for refining sour circulating tank close to the sour outlet of purification
The place's of setting insertion is provided with purification acid pump, and the inner bottom for refining sour circulating tank is equipped with aeration tube, the upper table of the aeration tube
Face is equidistant to be equipped at least six exhaust heads.
As further scheme of the invention: the exhaust head and aeration tube perforation connect, and the port peace of exhaust head
Equipped with one-way piece, the aeration tube penetrates through connection, one end connection of the air inlet through the sour circulating tank of purification and with air inlet
There is external blowing-type aerator.
As further scheme of the invention: the internal reservoir of the tail gas absorption tank has lye, and tail gas absorption tank
Connection is penetrated through by escape pipe with sour circulating tank is refined.
As the present invention further scheme: one end of purification acid outlet through refine sour circulating tank and with purification
One end perforation connection of sour pump discharge perforation connection, the water inlet refines sour circulating tank, and the other end of water inlet is communicated with
Deionized water storage bin.
As further scheme of the invention: the method for the pyrite-based sulfuric acid production system production refined sulfuric acid is following step
It is rapid:
S1, the sulfur trioxide flue gas from troilite acid making system conversion section is entered from into fume pipe, by into cigarette
Port enters the bottom of purification acid tower, then controls liquid valve A and convey purification acid into the liquid inside purification acid tower by refining sour import
In body pipeline, then sprayed by spray head；
S2, make to enter purification acid tower sulfur trioxide flue gas rise and with the purification acid counter current contacting that sprays from top to bottom, this
When flue gas in sulfur trioxide flue gas enter liquid phase, remaining flue gas is discharged into first grade absorption tower by the first exhaust smoke outlet, warp
Second exhaust smoke outlet of the upper end of first grade absorption tower is discharged, and returns in former acid making system；
Purification acid concentration after absorbing sulfur trioxide in S3, above-mentioned purification acid tower increases, and is flowed by circulating tank inlet
It refines in sour circulating tank, while deionized water is added into the sour circulating tank of purification using water inlet, convenient for being followed to inflow purification acid
Purification acid concentration in ring tank is adjusted；
S4, by air inlet dry air is filled in aeration tube again, then is discharged by exhaust head and refines sour circulating tank
Inside facilitates and comes out the free sulur dioxide stripping dissolved in purification acid, reduces the sulfur dioxide concentration that dissociates in acid；
Purification acid-utilising after S5, adjusting concentration refines sour pumping and goes out, and is exported by purification acid and is stored into purification acid storage
It in tank, while refining the spilling gas in sour circulating tank and being drained into tail gas absorption tank by escape pipe, by tail gas absorption tank
Lye absorb it is up to standard after, emitted by exhaust outlet.
Compared with prior art, the beneficial effects of the present invention are: the present invention devises a kind of pyrite-based sulfuric acid production system production
Purification acid is contacted with sulfur trioxide flue gas spray in actual use, into liquid phase, is mentioned by the system and method for refined sulfuric acid
Its high concentration, refines sour flow passage components and all serves as a contrast tetrafluoro, reduce the iron dissolved in acid, then is dense to purification acid using deionized water
Degree is adjusted, and reduces the impurity brought into water, recycles aeration tube that dry air is discharged into purification acid by exhaust head
In circulating tank, convenient for coming out the free sulur dioxide stripping dissolved in purification acid, the sulfur dioxide concentration that dissociates in acid is reduced, this
Design is not only simple in structure, and it is convenient to operate, and solve the industrial sulphuric acid impurity content of traditional pyrite-based sulfuric acid production production compared with
The problem of height, especially iron ion and free sulur dioxide are exceeded, and the sour quality requirements of purification are not achieved, reduce economic value.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the system and method for pyrite-based sulfuric acid production system production refined sulfuric acid；
Fig. 2 is the structural representation that acid tower is refined in a kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid
Figure；
Fig. 3 is that the structure of the sour circulating tank of purification in a kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid is shown
It is intended to.
In figure: 1, refining acid tower；2, into fume pipe；3, air valve A；4, exhaust outlet；5, tail gas absorption tank；6, into flue gas mouth；
7, escape pipe；8, air inlet；9, sour circulating tank is refined；10, air valve B；11, circulating tank inlet；12, purification acid outlet；13, smart
Relieving haperacidity holding vessel；14, liquid valve A；15, first grade absorption tower；16, sour import is refined；17, the first exhaust smoke outlet；18, water inlet；19,
Fluid pipeline；20, spray head；22, acid tower liquid outlet is refined；23, the second exhaust smoke outlet；901, aeration tube；902, exhaust head；
903, purification acid pump.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of system of pyrite-based sulfuric acid production system production refined sulfuric acid, including
Purification acid tower 1 and the upper end perforation for refining acid tower 1 are connected with the first exhaust smoke outlet 17 for discharging sulfur trioxide flue gas, and essence
The lower end side of acid tower 1 is equipped with into flue gas mouth 6, is connected with into the perforation of one end of flue gas mouth 6 into fume pipe 2, into flue gas mouth 6
With into the air valve A3 (model WJ41H-16C) being equipped between fume pipe 2 for controlling the sulfur trioxide flue gas amount of being discharged into, refine
The upper end of acid tower 1 is connected with first grade absorption tower 15 by the perforation of the first exhaust smoke outlet 17, and the upper end of first grade absorption tower 15 is connected with
Second exhaust smoke outlet 23, the lower end of purification acid tower 1 are equipped with purification acid tower liquid outlet 22, and one end of purification acid tower liquid outlet 22 is logical
Piping perforation is connected with circulating tank inlet 11, and the lower end perforation of circulating tank inlet 11 is connected with the sour circulating tank 9 of purification, essence
The one side perforation of relieving haperacidity circulating tank 9 is connected with air inlet 8, and refines and be equipped between sour circulating tank 9 and air inlet 8 for controlling
The air valve B10 (model WJ41H-16C) of gas influx processed refines the upper end of sour circulating tank 9 close to circulating tank inlet 11
A side position at the escape pipe 7 of discharge gas is installed, and refine the upper end of sour circulating tank 9 close to circulating tank inlet 11
Water inlet 18 for injecting deionized water is installed at another side position, refines the upper end of sour circulating tank 9 close to water inlet 18
A side position at the purification acid outlet 12 for sending purification acid outside is installed, the perforation of one end of escape pipe 7 is connected with tail gas absorption tank
5, the upper end of tail gas absorption tank 5 is equipped with exhaust outlet 4, and the internal reservoir of tail gas absorption tank 5 has lye, and tail gas absorption tank 5 with
Sour circulating tank 9 is refined by the perforation connection of escape pipe 7, the upper end for refining acid outlet 12 is connected with purification acid storage by pipeline perforation
Tank 13 is deposited, the upper end side of purification acid tower 1 is provided with the sour import 16 of purification, and the one end for refining sour import 16 passes through pipeline and purification
Acid outlet 12 penetrates through connection, refines and is equipped with liquid valve A14 (model 41W-16P) between acid outlet 12 and the sour import 16 of purification.
The inner upper end of purification acid tower 1 is equipped with fluid pipeline 19, and refine acid tower 1 is internally located at fluid pipeline 19
Lower end is provided with spray head 20, and circulating tank inlet 11 and purification acid tower liquid outlet 22 are penetrated through by pipeline to be connected, spray head 20
At least provided with five, and spray head 20 and the perforation of fluid pipeline 19 connect, and fluid pipeline 19 and spray head 20 are distributed in a ring
In the inside of purification acid tower 1, and fluid pipeline 19 and the sour perforation of import 16 of purification connect, and utilize fluid pipeline 19 and spray head 20
Purification acid can be sprayed by spray head 20, convenient for the sulfur trioxide liquid phase in flue gas, improve the concentration of purification acid.
The upper end for refining acid circulating tank 9 is embedded at a side position of purification acid outlet 12 is provided with purification acid pump 903,
And the inner bottom for refining sour circulating tank 9 is equipped with aeration tube 901, the upper surface of aeration tube 901 is equidistant to be equipped at least six
A exhaust head 902, exhaust head 902 and the perforation of aeration tube 901 connect, and the port of exhaust head 902 is equipped with one-way piece, aeration tube
901 through refining sour circulating tank 9 and penetrating through connection with air inlet 8, and one end of air inlet 8 is connected with external blowing-type aeration and sets
It is standby, one end of acid outlet 12, which is refined, through the sour circulating tank 9 of purification and with purification acid pump 903 exports perforation connection, water inlet 18
One end penetrates through connection and refines sour circulating tank 9, and the other end of water inlet 18 is communicated with deionized water storage bin, by sour to purification
Deionized water is added in circulating tank 9, facilitates the concentration for adjusting purification acid, reduces the impurity brought into water.
In conclusion the method for the pyrite-based sulfuric acid production system production refined sulfuric acid is following steps:
S1, the sulfur trioxide flue gas from troilite acid making system conversion section is entered from into fume pipe 2, by into cigarette
Port 6 enters the bottom of purification acid tower 1, then controls liquid valve A14 and convey purification acid into purification acid tower 1 by refining sour import 16
In the fluid pipeline 19 in portion, then sprayed by spray head 20；
S2, make to enter purification 1 sulfur trioxide flue gas of acid tower rise and with the purification acid counter current contacting that sprays from top to bottom, this
When flue gas in sulfur trioxide flue gas enter liquid phase, remaining flue gas discharges into first grade absorption tower 15 by the first exhaust smoke outlet 17
Interior, the second exhaust smoke outlet 23 discharge through 15 upper end of first grade absorption tower returns in former acid making system；
Purification acid concentration after absorbing sulfur trioxide in S3, above-mentioned purification acid tower 1 increases, and is flowed by circulating tank inlet 11
Enter to refine in acid circulating tank 9, while deionized water is added into the sour circulating tank 9 of purification using water inlet 18, convenient for smart to flowing into
Purification acid concentration in relieving haperacidity circulating tank 9 is adjusted；
S4, by air inlet 8 dry air is filled in aeration tube 901 again, then purification acid is discharged by exhaust head 902 and is followed
The inside of ring tank 9 facilitates and comes out the free sulur dioxide stripping dissolved in purification acid, and it is dense to reduce free sulur dioxide in acid
Degree；
S5,903 extraction of purification acid-utilising purification acid pump after concentration is adjusted, purification acid is stored by purification acid outlet 12
In holding vessel 13, while the spilling gas refined in sour circulating tank 9 is drained into tail gas absorption tank 5 by escape pipe 7, by tail gas
Lye in tourie 5 absorb it is up to standard after, emitted by exhaust outlet 4.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of system of pyrite-based sulfuric acid production system production refined sulfuric acid, including purification acid tower (1) and purification acid tower (1)
Upper end perforation is connected with the first exhaust smoke outlet (17) for discharging sulfur trioxide flue gas, and refines the lower end side of acid tower (1)
It is equipped with into flue gas mouth (6), it is described to be connected with into the perforation of one end of flue gas mouth (6) into fume pipe (2), which is characterized in that described
Into flue gas mouth (6) and into the air valve A (3) being equipped between fume pipe (2) for controlling the sulfur trioxide flue gas amount of being discharged into, the essence
The upper end of acid tower (1) is connected with first grade absorption tower (15), the first grade absorption tower by the first exhaust smoke outlet (17) perforation
(15) upper end is connected with the second exhaust smoke outlet (23), and the lower end of purification acid tower (1) is equipped with purification acid tower liquid outlet
(22), one end of purification acid tower liquid outlet (22) is connected with circulating tank inlet (11), the circulation by pipeline perforation
The lower end perforation of tank inlet (11) is connected with the sour circulating tank (9) of purification, and the one side for refining sour circulating tank (9), which penetrates through, to be connected
It is connected to air inlet (8), and refines the air valve B being equipped between sour circulating tank (9) and air inlet (8) for controlling gas influx
(10), the upper end for refining sour circulating tank (9) is equipped with discharge gas at a side position of circulating tank inlet (11)
Escape pipe (7), and the upper end for refining sour circulating tank (9) installed at another side position of circulating tank inlet (11) it is useful
In the water inlet (18) of injection deionized water, a side position of the upper end for refining sour circulating tank (9) close to water inlet (18)
Place is equipped with the purification acid outlet (12) for sending purification acid outside, and one end perforation of the escape pipe (7) is connected with tail gas absorption tank
(5), the upper end of the tail gas absorption tank (5) is equipped with exhaust outlet (4), and the upper end of the purification acid outlet (12) is passed through by pipeline
Lead to and be connected to the sour holding vessel (13) of purification, the upper end side of purification acid tower (1) is provided with the sour import (16) of purification, the essence
One end of relieving haperacidity import (16) is connected by pipeline and purification acid outlet (12) perforation, the purification acid outlet (12) and purification acid
Liquid valve A (14) is installed between import (16).
2. a kind of system of pyrite-based sulfuric acid production system production refined sulfuric acid according to claim 1, which is characterized in that described
The inner upper end of purification acid tower (1) is equipped with fluid pipeline (19), and refine acid tower (1) is internally located at fluid pipeline (19)
Lower end is provided with spray head (20), and the circulating tank inlet (11) and purification acid tower liquid outlet (22) are penetrated through by pipeline and connected
It connects.
3. a kind of system of pyrite-based sulfuric acid production system production refined sulfuric acid according to claim 2, which is characterized in that described
Spray head (20) is at least provided with five, and spray head (20) and fluid pipeline (19) perforation connect, the fluid pipeline (19)
It is distributed in the inside of purification acid tower (1) in a ring with spray head (20), and fluid pipeline (19) and the sour import (16) of purification penetrate through
Connection.
4. a kind of system of pyrite-based sulfuric acid production system production refined sulfuric acid according to claim 1, which is characterized in that described
The upper end for refining acid circulating tank (9) is embedded at a side position of purification acid outlet (12) is provided with purification acid pump (903), and
The inner bottom for refining sour circulating tank (9) is equipped with aeration tube (901), the equidistant installation in upper surface of the aeration tube (901)
There are at least six exhaust heads (902).
5. a kind of system of pyrite-based sulfuric acid production system production refined sulfuric acid according to claim 4, which is characterized in that described
Exhaust head (902) and aeration tube (901) perforation connect, and the port of exhaust head (902) is equipped with one-way piece, the aeration tube
(901) through refining sour circulating tank (9) and penetrating through connection with air inlet (8), one end of the air inlet (8) is connected with external drum
Wind formula aerator.
6. a kind of system of pyrite-based sulfuric acid production system production refined sulfuric acid according to claim 1, which is characterized in that described
The internal reservoir of tail gas absorption tank (5) has lye, and tail gas absorption tank (5) is passed through with the sour circulating tank (9) of purification by escape pipe (7)
Lead to and connects.
7. a kind of system of pyrite-based sulfuric acid production system production refined sulfuric acid according to claim 4, which is characterized in that described
One end of purification acid outlet (12) exports perforation connection, the water inlet through the sour circulating tank (9) of purification and with purification acid pump (903)
One end perforation connection of mouth (18) refines sour circulating tank (9), and the other end of water inlet (18) is communicated with deionized water storage bin.
8. system and the side of a kind of pyrite-based sulfuric acid production system production refined sulfuric acid according to any one of claims 1-7
Method, which is characterized in that the method for the pyrite-based sulfuric acid production system production refined sulfuric acid is following steps:
S1, the sulfur trioxide flue gas from troilite acid making system conversion section is entered from into fume pipe (2), by into flue gas
Mouthful (6) enter the bottom of purification acid tower (1), then control liquid valve A (14) and will refine acid and conveyed by purification acid import (16) into purification
In the internal fluid pipeline (19) of acid tower (1), then by spray head (20) ejection；
S2, make to enter purification acid tower (1) sulfur trioxide flue gas rise and with the purification acid counter current contacting that sprays from top to bottom, at this time
Sulfur trioxide flue gas in flue gas enters liquid phase, and remaining flue gas discharges into first grade absorption tower (15) by the first exhaust smoke outlet (17)
Interior, the second exhaust smoke outlet (23) discharge of the upper end through first grade absorption tower (15) returns in former acid making system；
Purification acid concentration after absorbing sulfur trioxide in S3, above-mentioned purification acid tower (1) increases, and is flowed by circulating tank inlet (11)
Enter and refine in sour circulating tank (9), while deionized water is added to refining in sour circulating tank (9) using water inlet (18), convenient for pair
The purification acid concentration refined in sour circulating tank (9) is flowed into be adjusted；
S4, by air inlet (8) dry air is filled in aeration tube (901) again, then purification acid is discharged by exhaust head (902)
The inside of circulating tank (9) facilitates and comes out the free sulur dioxide stripping dissolved in purification acid, reduces free sulur dioxide in acid
Concentration；
S5, purification acid-utilising purification acid pump (903) extraction after concentration is adjusted, purification acid is stored by purification acid outlet (12)
In holding vessel (13), while refining the spilling gas in sour circulating tank (9) and being drained into tail gas absorption tank (5) by escape pipe (7),
After the lye absorption in tail gas absorption tank (5) is up to standard, emitted by exhaust outlet (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910346601.0A CN109879255A (en) | 2019-04-27 | 2019-04-27 | A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid |
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|---|---|---|---|
| CN201910346601.0A CN109879255A (en) | 2019-04-27 | 2019-04-27 | A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid |
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| CN109879255A true CN109879255A (en) | 2019-06-14 |
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| CN201910346601.0A Pending CN109879255A (en) | 2019-04-27 | 2019-04-27 | A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid |
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Cited By (1)
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| CN111514734A (en) * | 2020-05-19 | 2020-08-11 | 北方工业大学 | Device and method for treating ammonia nitrogen in desulfurization wastewater by using flue gas |
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