CN206138987U - Carry in copper tailings desorption flue gas device of SO2 and resourceization - Google Patents
Carry in copper tailings desorption flue gas device of SO2 and resourceization Download PDFInfo
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- CN206138987U CN206138987U CN201620933729.9U CN201620933729U CN206138987U CN 206138987 U CN206138987 U CN 206138987U CN 201620933729 U CN201620933729 U CN 201620933729U CN 206138987 U CN206138987 U CN 206138987U
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- Prior art keywords
- desulfurizing tower
- pump
- tank
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- connection
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 31
- 239000010949 copper Substances 0.000 title claims abstract description 31
- 239000003546 flue gas Substances 0.000 title claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title abstract description 12
- 238000003795 desorption Methods 0.000 title abstract 2
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 60
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 39
- 230000023556 desulfurization Effects 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 33
- 239000010865 sewage Substances 0.000 claims description 27
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 20
- 229910052725 zinc Inorganic materials 0.000 claims description 20
- 239000011701 zinc Substances 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 17
- 229910021529 ammonia Inorganic materials 0.000 claims description 16
- 238000004821 distillation Methods 0.000 claims description 13
- 239000000706 filtrate Substances 0.000 claims description 12
- 239000002562 thickening agent Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 8
- 239000006228 supernatant Substances 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 7
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 7
- 239000004571 lime Substances 0.000 abstract description 7
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 abstract description 5
- 235000012538 ammonium bicarbonate Nutrition 0.000 abstract description 5
- 239000001099 ammonium carbonate Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 abstract description 4
- -1 iron ion Chemical class 0.000 abstract description 4
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001431 copper ion Inorganic materials 0.000 abstract description 3
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- ZGSDJMADBJCNPN-UHFFFAOYSA-N [S-][NH3+] Chemical compound [S-][NH3+] ZGSDJMADBJCNPN-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 210000000481 breast Anatomy 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 15
- 235000019268 ferrous carbonate Nutrition 0.000 description 10
- 239000004277 Ferrous carbonate Substances 0.000 description 9
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 9
- 229960004652 ferrous carbonate Drugs 0.000 description 9
- 229910000015 iron(II) carbonate Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 239000005083 Zinc sulfide Substances 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 229910052984 zinc sulfide Inorganic materials 0.000 description 6
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 6
- 239000006071 cream Substances 0.000 description 5
- 239000012065 filter cake Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005276 aerator Methods 0.000 description 3
- UYJXRRSPUVSSMN-UHFFFAOYSA-P ammonium sulfide Chemical compound [NH4+].[NH4+].[S-2] UYJXRRSPUVSSMN-UHFFFAOYSA-P 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000004035 construction material Substances 0.000 description 3
- 238000009867 copper metallurgy Methods 0.000 description 3
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009854 hydrometallurgy Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000007115 recruitment Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052840 fayalite Inorganic materials 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052960 marcasite Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model relates to an use carry in copper tailings desorption flue gas device of SO2 and resourceization, belong to the environmental control tech -nology field. The utility model discloses the utilization contains the desulfurization activity material in carrying the copper tailings, and in the aqueous solution, with the flue gas contact that contains SO2, SO2 absorbate, the flue gas can purify, add ammonium sulphide, ammonium bicarbonate, lime breast through the substep, make iron ion among the desulfurizing slurry, zinc ion, copper ion, ammonium ion etc. The resourceization recycle.
Description
Technical field
This utility model is related to a kind of utilization and carries SO in copper tailings removing flue gas2And the device of further resource, belong to
Environmental protection technical field.
Background technology
With the sustainable development of China's copper metallurgy industry, copper ore resource is increasingly exhausted, the copper mine of current cupric 0.2 ~ 0.3%
Be produced utilization, and Copper making process output slag its copper content more than 0.5%.In slag, copper content is than primary
The copper content of copper mine is also high, it is necessary to reclaimed, and the technique is referred to as the dilution of slag and processes, and Jing dilutions process separation and Extraction copper
Slag afterwards is referred to as carrying copper tailings.
Copper tailings is carried with very strong absorption SO2Ability, has carried out thermodynamic parameter analysis shows to putting forward copper tailings component,
Fayalite, magnesium ferrite, calcium ferrum brightness ore deposit etc. are removing SO2Active substance, Calx, the Calx for commonly using at present can be replaced
The desulfurizing agent such as stone and ammonia, and its product is reclaimed in sweetening process, make the best use of everything, a resource is opened to carry copper tailings
Change using new road.
Polysulfide such as pyrite during pyrometallurgical smelting process（FeS2）And Chalkopyrite（CuFeS2）, decomposite in stove
Sulfur, is continued to be oxidized to SO by the oxygen in air2Discharge with flue gas, SO in flue gas2Content is very high.Such as air blast, outlet of still is reacted
SO in flue gas2Content is up to 7.7%；SO in oxygen-enriched air blast flue gas2Content is up to 15%, and reacting furnace exiting flue gas are provided with recovery SO mostly2
The device of sulphuric acid is produced into, but reclaims SO2Flue gas afterwards still also contains higher SO2, the increasing of pollution of area source intensity, improvement is more
Plus it is difficult；On the other hand, either sulfuric acid tail gas or face source dissipate the purification of cigarette emission, the sulfur method face for adopting at present
Face the difficulties such as high cost, raw material sources inconvenience, comprehensive utilization, heavy environmental burden is brought to the development of enterprise.Therefore, pin
Atmospheric pollution rich and influential family to nonferrous metallurgy, develop it is efficient, be suitable for, the low concentration SO for the treatment of in accordance with local conditions2With heavy metal Collaborative Control skill
Art is imperative.
Utility model content
The purpose of this utility model is to provide one kind and carries SO in copper tailings removing flue gas2With the device of resource, by with
Lower technical scheme is realized：
One kind carries SO in copper tailings removing flue gas2With the device of resource, including：Pressurization blower 1, first grade desulfurizing tower 2,
Two-grade desulfurizing tower 3, demister 4, stock pump I 5, circulating pump I 6, circulating pump II 7, surge tank 8, desulfurization are starched storage tank 9, stock pump II 10, are taken off
Sulfur slurry head tank 11, vacuum filter I 12, dump tank I 13, vacuum pump I 14, except zinc groove 15, screw pump 16, filter press
17th, iron removal trough 18, stock pump III 19, thickener 20, vacuum filter II 21, dump tank II 22, vacuum pump II 23, exsiccator 24,
Sewage storage tank 25, sewage pump 26, ammonia-lime water distillation column 27, dephlegmator 28, condenser 29, ammonia vessel 30；
Pressurization blower 1 is connected with 2 air inlet of first grade desulfurizing tower, 2 gas outlet of first grade desulfurizing tower and 3 air inlet of two-grade desulfurizing tower
Mouth connection, 3 gas outlet of two-grade desulfurizing tower is in communication with the outside by demister 4；
Surge tank 8 is connected with 3 inlet of two-grade desulfurizing tower by stock pump I 5,3 liquid outlet of two-grade desulfurizing tower and first grade desulfurizing
2 inlet of tower connects, and 2 liquid outlet of first grade desulfurizing tower is connected with desulfurization slurry storage tank 9, and two-step desulfurization tower is designed with circulating pump serosity
Tower top is sent in pressurization, and is provided with the solid shower nozzle of some anticorrosive anti-wear eddy flows；Desulfurization slurry storage tank 9 is high with desulfurization slurry by stock pump II 10
Position groove 11 import connection, the desulfurization slurry outlet of head tank 11 are connected with I 13 import of dump tank by vacuum filter I 12, dump tank I
13 are provided with vacuum pump I 14, and dump tank I 13 is exported and is connected except 15 import of zinc groove, except the outlet of zinc groove 15 is by screw pump 16 and plate
Frame pressure filter 17 connects, and 17 filtrate (liquid of filter press is connected with 18 import of iron removal trough, and the outlet of iron removal trough 18 is by stock pump III
19 are connected with thickener 20, and 20 supernatant outlet of thickener is connected with sewage storage tank 25, and the precipitation of thickener 20 is exported and vacuum mistake
Filter II 21 connects, and II 21 sludge outlet of vacuum filter is connected with exsiccator 24, II 21 filtrate (liquid of vacuum filter with connect
II 22 import of groove connects, and dump tank II 22 is provided with vacuum pump II 23, and the outlet of dump tank II 22 is connected with sewage storage tank 25；
Sewage storage tank 25 is connected with ammonia -27 inlet of lime water distillation column by sewage pump 26, ammonia-lime water distillation column 27
Gas outlet is connected with ammonia vessel 30 by dephlegmator 28, condenser 29.
The course of work：First grade desulfurizing tower 2 is sent in the pressurized pressurization of aerator 1 of flue gas carries out first time desulfurization, subsequently into
Two-grade desulfurizing tower 3 carries out second desulfurization, and the flue gas after desulfurizing and purifying is up to standard is discharged via after 4 demisting of demister；
Carry copper tailings and water and make in surge tank 8 and carry copper tailings serosity, Jing stock pumps I 5 send into two-grade desulfurizing tower 3, Jing circulations
Pump II 7 is forced into 0.25MPa and is sent to tower top shower nozzle atomisation and smoke contacts and carries out two-grade desulfurizing, the serosity after two-grade desulfurizing
Into first grade desulfurizing tower 2, Jing circulating pumps I 6 are forced into 0.25MPa and are sent to tower top shower nozzle atomisation with smoke contacts absorption flue gas
In SO2First grade desulfurizing is carried out, and then desulfurization is entered from first grade desulfurizing tower 2 and is starched storage tank 9, is used for subsequent handling；Two-step desulfurization
The solid shower nozzle of some anticorrosive anti-wear eddy flows is respectively arranged with tower；
Desulfurization slurry in desulfurization slurry storage tank 9 sends into serosity head tank 11 with stock pump II 10, from inflow vacuum filter 12
Filtered, filtering residue is discharged, and can be used as construction material or cement raw material, the desulfurization slurry after filtration is connect by the suction of vacuum pump I 14
Groove I 13, I 14 service intermittent of vacuum pump, after dump tank I 13 fills with liquid, I 14 break-off of vacuum pump, dump tank I 13
After emptying, vacuum pump I 14 is started working；Desulfurization slurry after filtration is entered except zinc groove 15 from dump tank I 13, in except zinc groove 15
Ammonium sulfide reaction is added to generate the precipitate such as zinc sulfide, copper sulfide, mixture is pressed into filter press 17, filtering residue with screw pump 16
It is used for zinc hydrometallurgy for zinc sulfide mud and extracts zinc and copper, filtrate enters iron removal trough 18, ammonium hydrogen carbonate life is added in iron removal trough 18
Precipitate into ferrous carbonate, mixture is sent to thickener 20 with serosity pump III 19 carries out precipitation concentration, and supernatant is drained as dirt
Water is entered in sewage storage tank 25, and ferrous carbonate precipitation vacuum filter 21 is filtered, after filter cake is dried in exsiccator 24
As ferrous carbonate product, filtrate suck dump tank II 22 by vacuum pump II 23, subsequently into sewage storage tank 25；
To in sewage storage tank 25, add lime cream to mix with sewage, ammonia-Calx water distillation system 27 is sent to sewage pump 26,
With direct steam heating to 100 DEG C, (NH4)HSO4Decompose, ammonia and vapor are escaped from the top of distillation column, are controlled by dephlegmator 28
90～95 DEG C of temperature processed, is condensed into ammonia subsequently into condenser 29 and is stored in ammonia vessel 30.
Copper tailings pulp liquid desulfurized step is carried, can be according to SO in flue gas2Content and the requirement to standard limit of smog release, select to adopt
With one-level or two-stage desulfurization process flow process.
This utility model is had the advantage that compared with prior art：
（1）Desulfurizing tower makes whole desulfurization built with the solid shower nozzle of some anticorrosive anti-wear eddy flows with certain sprinkle density
Droplet shape is full of in tower, contact area is big, and desulfuration efficiency is high；
（2）Desulfuration efficiency reaches 85～95%, realizes with the purpose of pollution treatment of giving up, significant to environmental conservation；
（3）By completing except zinc groove, zinc, copper ion are precipitated completely for the recovery of zinc ion and copper ion in desulfurization slurry,
Iron ion is not deposited；The recovery of the iron ion in desulfurization slurry is completed by iron removal trough, and iron ion is precipitated completely, is realized and is carried
The purpose that the element resourceization that ferrum, zinc, copper in copper tailings etc. have recovery value is utilized；
（4）This utility model operating cost is low, carries out solid waste resource utilization with reference to flue gas during smelting desulfurization, with prominent
The environmental benefit for going out and economic benefit.
Description of the drawings
Fig. 1 is this utility model schematic diagram.
In figure：1- pressurization blowers, 2- first grade desulfurizing towers, 3- two-grade desulfurizing towers, 4- demisters, 5- stock pumps I, 6- circulating pumps
I, 7- circulating pump II, 8- surge tanks, 9- desulfurization slurry storage tank, 10- stock pumps II, 11- desulfurization slurry head tank, 12- vacuum filters I,
13- dump tanks I, 14- vacuum pumps I, 15- remove zinc groove, 16- screw pumps, 17- filter press, 18- iron removal troughs, 19- stock pumps III,
20- thickeners, 21- vacuum filters II, 22- dump tanks II, 23- vacuum pumps II, 24- ferrous iron drying machines, 25- sewage storage tanks,
26- sewage pumps, 27- ammonia-lime water distillation column, 28- dephlegmators, 29- condensers, 30- ammonia vessels, 31- cooling waters, 32- steam,
33- drainings, 34- lime whites, 35- ferrous carbonates, 36- ammonium hydrogen carbonate, 37- (NH4)2S, 38- residue, 39- put forward copper tailings, 40- works
Skill water, 41- flue gases.
Specific embodiment
Embodiment 1
300000 t/a sulphuric acid, sulfuric acid tail gas treating capacity 100000Nm3/ h, SO in tail gas2Content 2850mg/Nm3, offgas outlet
Require SO2Content 100mg/Nm3.Using two-grade desulfurizing, as shown in Figure 1.
The pressurized aerator of sulfuric acid tail gas 1 is forced into 0.2～0.3kPa, sends into first grade desulfurizing tower 2 first time desulfurization, then
Second desulfurization is carried out into two-grade desulfurizing tower 3, desulfurizing tower diameter phi 5m, high 23.5m need serosity to use respectively at the top of desulfurizing tower
Circulating pump 6,7 is forced into 0.25Mpa, and circulating load is 1500m3/ h, is sent to tower top shower nozzle atomisation and absorbs cigarette with smoke contacts
SO in gas2, liquid-gas ratio is 8L/m3, the flue gas after purification is up to standard is via discharge after 4 demisting of demister；Solid content is 20% to carry
Copper tailings serosity magnitude of recruitment is 10m3/ h, is sent to two-grade desulfurizing tower 3 for two-grade desulfurizing, the serosity after two-grade desulfurizing with stock pump I 5
First grade desulfurizing is carried out into first grade desulfurizing tower 2, then doctor solution 10m is taken out from first grade desulfurizing tower 23/ h enters desulfurization and starches storage tank 9
Use for subsequent handling.
Desulfurization slurry stock pump II 10 is sent to serosity head tank 11, is filtered from vacuum filter 12 is flowed into, and filter cake is
Copper metallurgy residue, stacks still as construction material, and filtrate enters dump tank I 13, subsequently into except zinc groove 15, filtrate 9m3/ h, adds
45～50kg/h of ammonium sulfide, generates the 60～65kg/h of precipitate such as zinc sulfide, copper sulfide, and precipitate is pressed into sheet frame with screw pump 16
Pressure filter 17, zinc sulfide mud 100kg/h of acquisition or so, are sent to zinc hydrometallurgy and extract zinc and copper.Filtrate is entered in iron removal trough 18,
280～290kg/h of ammonium hydrogen carbonate is added, ferrous carbonate is generated and is precipitated 400～410kg/h, mixture is sent with serosity pump III 19
Precipitation concentration is carried out toward thickener 20, supernatant is drained in sewage storage tank 25, ferrous carbonate precipitation vacuum filter 21
Filter, filter cake is ferrous carbonate 390～400kg/h of product after being dried in exsiccator 24.
To in sewage storage tank 25, add lime cream 35kg/h, sewage to mix with lime cream, ammonia-Calx is sent to sewage pump 26
Water distillation system 27, with direct steam heating to 100 DEG C, ammonia and vapor are escaped from the top of distillation column, by dephlegmator control
90～95 DEG C of temperature, is condensed into ammonia subsequently into condenser 29 and is stored in ammonia vessel 30,90～100kg/h.
Embodiment 2
800000 t/a sulphuric acid, sulfuric acid tail gas treating capacity 200000Nm3/ h, SO in the tail gas of double-absorption sulfuric acid apparatus2Content
800mg/Nm3, offgas outlet requirement SO2Content 100mg/Nm3Below, desulfuration efficiency 87.5%.Using first grade desulfurizing, with reference to Fig. 1
Remove two-grade desulfurizing tower.
The pressurized aerator of sulfuric acid tail gas 1 is forced into 0.15～0.2kPa, sends into desulfurizing tower, desulfurizing tower diameter phi 6.2m,
High 24.5m, needs serosity circulating pump to be forced into 0.25Mpa at the top of desulfurizing tower, circulating load is 3000m3/ h, is sent to tower top shower nozzle
Atomisation absorbs the SO in flue gas with smoke contacts2, liquid-gas ratio is 25L/m3Flue gas after purification is up to standard is removed via demister 4
Discharge after mist；It is 1.5m that solid content is the 15% copper tailings serosity magnitude of recruitment that carries3/ h, being sent to desulfurizing tower with stock pump I 5 carries out desulfurization,
Then doctor solution 1.5m is taken out from desulfurizing tower3/ h enters desulfurization and starches storage tank 9, uses for subsequent handling.
Desulfurization slurry stock pump II 10 is sent to serosity head tank 11, is filtered from vacuum filter 12 is flowed into, and filter cake is
Copper metallurgy residue, stacks still as construction material, and filtrate enters dump tank I 13, subsequently into except zinc groove 15, filtrate 1.4m3/ h, plus
Enter 7～9kg/h of ammonium sulfide, generate the 9～10kg/h of precipitate such as zinc sulfide, copper sulfide, precipitate is pressed into sheet frame with screw pump 16
Pressure filter 17, zinc sulfide 15～18kg/h of mud of acquisition or so, are sent to zinc hydrometallurgy and extract zinc and copper.Filtrate enters iron removal trough 18
In, 40～45kg/h of ammonium hydrogen carbonate is added, ferrous carbonate is generated and is precipitated 60～65kg/h, mixture is sent to serosity pump III 19
Thickener 20 carries out precipitation concentration, and supernatant is drained in sewage storage tank 25, ferrous carbonate precipitation 21 mistake of vacuum filter
Filter, filter cake are ferrous carbonate 55～60kg/h of product after being dried in fluidized bed dryer.
To in sewage storage tank 25, add 5～6kg/h of lime cream, sewage to mix with lime cream, ammonia-stone is sent to sewage pump 26
Grey water distillation system 27, with direct steam heating to 100 DEG C, ammonia and vapor are escaped from the top of distillation column, by dephlegmator control
90～95 DEG C of temperature processed, is condensed into ammonia subsequently into condenser 29 and is stored in ammonia vessel 30,15～20kg/h.
Claims (3)
1. one kind carries SO in copper tailings removing flue gas2With the device of resource, including：Pressurization blower（1）, desulfurizing tower, demister
（4）, stock pump I（5）, circulating pump, surge tank（8）, desulfurization slurry storage tank（9）, stock pump II（10）, desulfurization slurry head tank（11）, vacuum
Filter I（12）, dump tank I（13）, vacuum pump I（14）, except zinc groove（15）, screw pump（16）, filter press（17）, except ferrum
Groove（18）, stock pump III（19）, thickener（20）, vacuum filter II（21）, dump tank II（22）, vacuum pump II（23）, be dried
Device（24）, sewage storage tank（25）, sewage pump（26）, ammonia-lime water distillation column（27）, dephlegmator（28）, condenser（29）, ammonia
Groove（30）；
Pressurization blower（1）It is connected with desulfurizing tower air inlet, desulfurizing tower gas outlet passes through demister（4）It is in communication with the outside；
Surge tank（8）By stock pump I（5）It is connected with desulfurizing tower inlet, desulfurizing tower is provided with circulating pump and tower is sent in serosity pressurization
Storage tank is starched with desulfurization in top, desulfurizing tower liquid outlet（9）Connection, desulfurization slurry storage tank（9）By stock pump II（10）Head tank is starched with desulfurization
（11）Import connects, desulfurization slurry head tank（11）Outlet is by vacuum filter I（12）With dump tank I（13）Import connects, and connects
Groove I（13）It is provided with vacuum pump I（14）, dump tank I（13）Export and remove zinc groove（15）Import connects, except zinc groove（15）Outlet is logical
Cross screw pump（16）With filter press（17）Connection, filter press（17）Filtrate (liquid and iron removal trough（18）Import connects,
Iron removal trough（18）Outlet is by stock pump III（19）With thickener（20）Connection, thickener（20）Supernatant outlet and sewage storage tank
（25）Connection, thickener（20）Precipitation outlet and vacuum filter II（21）Connection, vacuum filter II（21）Sludge outlet with
Exsiccator（24）Connection, vacuum filter II（21）Filtrate (liquid and dump tank II（22）Import connects, dump tank II（22）If
There is vacuum pump II（23）, dump tank II（22）Outlet and sewage storage tank（25）Connection；
Sewage storage tank（25）By sewage pump（26）With ammonia-lime water distillation column（27）Inlet connects, ammonia-lime water distillation column
（27）Gas outlet passes through dephlegmator（28）, condenser（29）With ammonia vessel（30）Connection.
2. device according to claim 1, it is characterised in that desulfurizing tower is two, is first grade desulfurizing tower respectively（2）With two
Level desulfurizing tower（3）, first grade desulfurizing tower（2）Air inlet and pressurization blower（1）Connection, first grade desulfurizing tower（2）Gas outlet with two grades
Desulfurizing tower（3）Air inlet connects, two-grade desulfurizing tower（3）Gas outlet passes through demister（4）It is in communication with the outside；Two-grade desulfurizing tower（3）
Inlet and surge tank（8）By stock pump I（5）Connection, two-grade desulfurizing tower（3）Liquid outlet and first grade desulfurizing tower（2）Inlet connects
Connect, first grade desulfurizing tower（2）Liquid outlet starches storage tank with desulfurization（9）Connection.
3. device according to claim 1, it is characterised in that more than one anticorrosive anti-wear eddy flow reality is provided with desulfurizing tower
Heart shower nozzle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620933729.9U CN206138987U (en) | 2016-08-25 | 2016-08-25 | Carry in copper tailings desorption flue gas device of SO2 and resourceization |
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|---|---|---|---|
| CN201620933729.9U CN206138987U (en) | 2016-08-25 | 2016-08-25 | Carry in copper tailings desorption flue gas device of SO2 and resourceization |
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Cited By (4)
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| CN106422716A (en) * | 2016-08-25 | 2017-02-22 | 昆明理工大学 | Method and device for removing SO2 in flue gas with copper extracting tailings and recycling copper extracting tailings |
| CN109126385A (en) * | 2018-09-20 | 2019-01-04 | 昌吉学院 | The processing method of Sulphur ressource in a kind of ammonia process of desulfurization rich solution |
| CN110090548A (en) * | 2019-04-11 | 2019-08-06 | 昆明理工大学 | A kind of method that copper ashes tailing cooperates with the wet desulphurization of zinc abstraction dedusting ash and recycles zinc sulfate |
| CN112725816A (en) * | 2020-12-25 | 2021-04-30 | 昆明理工大学 | Method and device for preparing hydrogen sulfide by sulfur dioxide electrocatalytic reduction in cooperation with membrane separation |
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2016
- 2016-08-25 CN CN201620933729.9U patent/CN206138987U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422716A (en) * | 2016-08-25 | 2017-02-22 | 昆明理工大学 | Method and device for removing SO2 in flue gas with copper extracting tailings and recycling copper extracting tailings |
| CN109126385A (en) * | 2018-09-20 | 2019-01-04 | 昌吉学院 | The processing method of Sulphur ressource in a kind of ammonia process of desulfurization rich solution |
| CN109126385B (en) * | 2018-09-20 | 2021-04-06 | 昌吉学院 | Treatment method for recycling sulfur in ammonia desulphurization pregnant solution |
| CN110090548A (en) * | 2019-04-11 | 2019-08-06 | 昆明理工大学 | A kind of method that copper ashes tailing cooperates with the wet desulphurization of zinc abstraction dedusting ash and recycles zinc sulfate |
| CN110090548B (en) * | 2019-04-11 | 2021-11-30 | 昆明理工大学 | Method for wet desulphurization and zinc sulfate recovery of copper slag tailings and zinc smelting fly ash |
| CN112725816A (en) * | 2020-12-25 | 2021-04-30 | 昆明理工大学 | Method and device for preparing hydrogen sulfide by sulfur dioxide electrocatalytic reduction in cooperation with membrane separation |
| CN112725816B (en) * | 2020-12-25 | 2021-12-24 | 昆明理工大学 | Method and device for preparing hydrogen sulfide by sulfur dioxide electrocatalytic reduction in cooperation with membrane separation |
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