CN209286942U - The purification of thallium and recyclable device in a kind of flue gas during smelting - Google Patents
The purification of thallium and recyclable device in a kind of flue gas during smelting Download PDFInfo
- Publication number
- CN209286942U CN209286942U CN201821780377.3U CN201821780377U CN209286942U CN 209286942 U CN209286942 U CN 209286942U CN 201821780377 U CN201821780377 U CN 201821780377U CN 209286942 U CN209286942 U CN 209286942U
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- Prior art keywords
- pond
- thallium
- packed tower
- cyclic absorption
- circulation
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- 229910052716 thallium Inorganic materials 0.000 title claims abstract description 51
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 title claims abstract description 51
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000003546 flue gas Substances 0.000 title claims abstract description 16
- 238000003723 Smelting Methods 0.000 title claims abstract description 13
- 238000000746 purification Methods 0.000 title claims abstract description 11
- 238000010521 absorption reaction Methods 0.000 claims abstract description 31
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 27
- 239000012716 precipitator Substances 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 abstract description 17
- 238000004064 recycling Methods 0.000 abstract description 7
- 238000004094 preconcentration Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 239000000243 solution Substances 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 7
- 238000003795 desorption Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical compound C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005200 wet scrubbing Methods 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
- Treating Waste Gases (AREA)
Abstract
The utility model discloses the purification of thallium and recyclable device in a kind of flue gas during smelting, the device includes heat exchanger, cyclone dust collectors, electric precipitator, cyclic absorption pond I, cyclic absorption pond II etc., metallurgical furnace, heat exchanger, cyclone dust collectors, electric precipitator is sequentially communicated, electric precipitator respectively with cyclic absorption pond I, cyclic absorption pond II is connected to, cyclic absorption pond I, cyclic absorption pond II is connected to after converging with demister, demister is connected to dehumidifier, dehumidifier respectively with packed tower I, packed tower II is connected to, packed tower I, the discharge gate of packed tower II parses pond I with circulation respectively after converging, circulation parsing pond II is connected to, circulation parsing pond I, circulation parsing pond II converge after respectively with electrolytic cell I, electrolytic cell II is connected to.The utility model simple process, removing recycling thallium is high-efficient, at low cost, and energy Preconcentration of Thallium realizes the purification and recycling of thallium in flue gas, is suitable for industrial applications and popularization.
Description
Technical field
The utility model relates to a kind of purification of thallium in flue gas during smelting and recyclable devices, belong to atmosphere pollution technical field.
Background technique
Thallium is typical hypertoxic heavy metal element, to the toxicity of organism considerably beyond mercury, lead, cadmium, adult lethal agent
Amount is 12mg/kg, and as typical distributed element, thallium is not individually at mine, mainly in a variety of gold such as lead, zinc, arsenic, copper, antimony, mercury
In the mineral deposits such as category, coal be enriched with, formed associated mineral, and with Tl(I in high-temperature calcination process) form be released, institute
With lead-zinc smelting, the industries such as Copper making are the emphasis that thallium pollution is administered.
In coal containing thallium and the combustion process of ore containing thallium: most thalliums are by Tl(I) enter in the form of halogen compounds
Meteorology, small part is by Tl(III) and thallium element in the form of be dispersed in tail gas and slag.Tl(III) can pass through with the thallium of particulate form
Dedusting, wet scrubbing or dry adsorbent injection method removal, and Tl(I) due to its low melting point, high equilibrium vapour pressure and
It is water-soluble and in an atmosphere mean residence time be up to the several years, easily formed extensively by long range Atmospheric Transportation in an atmosphere
Thallium pollution be further enriched in vivo with food chain and as rainfall dustfall enters water body.Various countries and area are
Prevention and treatment thallium pollution is put into effect and is performed and its stringent standard: putting into effect discharge standard of air pollutants such as Shanghai City and requires
Flue gas thallium content is lower than 0.2mg/m3。
Thallium in flue gas has the characteristics that content is few and toxicity is very big, electrostatic precipitator (ESP) in traditional industrial process
The particulate matter in flue gas can effectively be trapped, but since only about 8% thallium is attached in flue dust, and Tl(I) partial size is minimum
Easily, so ESP (being lower than 7%) very low to its removal efficiency；Bag filter FF) there is uniqueness to other heavy metal removal performances
Effect, but thallium removal efficiency is also extremely low.And wet desulfurization system (WFGD) is to Tl(I not soluble in water) capture effect is unobvious,
To Tl(III) can removal efficiency it is low (be lower than 30%).According to the data of International Energy Agency, the average fire coal per ton of China contains thallium about
100g, an annual output other zinc smelting factory of 10 10,000 tons discharge more than 40 tons thalliums every year and enter atmosphere.Selective catalytic oxidation method
Using the boiling characteristics and Tl(I of thallium) medium reproducibility selectively and is efficiently oxidized and is converted into more stable Tl
(III) the catalysis oxidation efficiency reduces the activity of thallium up to 90% or more (this technique), and then effectively removes, and reaches deep purifying and incites somebody to action
The purpose of thallium resource utilization in exhaust gas.
Currently, there is no can be with economical and efficient, and environmental friendly regenerated smelts cigarette containing thallium in flue gas in the Controlling research of gaseous state thallium
Gas disposal method.Patent CN101255502 discloses the comprehensive recycling process and device of a kind of meteorological thallium, using sulfuric acid leaching,
The units operation such as extraction, back extraction, displacement, thallium is cemented out.But the complex technical process, solution absorption is repeatedly introduced, is set
It changes, the methods of extraction is with high costs, and is only applicable to lead smelting industry, Difficulty.Patent application CN106929683A is disclosed
The device of thallium is taken off for flue gas, mainly includes flue gas scrubber, multilevel circulating cleaning equipment, lye conditioning tank, filter press, guarantor
Pacify filter, reverse osmosis membrane apparatus, ion exchange column, photoelectrocatalysidevice device, clear water collecting box, solid-liquid point is carried out using filter press
From finally successively by cartridge filter, reverse osmosis membrane apparatus, ion exchange column and photoelectrocatalysidevice device multiple purifying, purification
It is high-efficient, wherein purified water serves as cleaning solution by clear water collecting box in being back to lye conditioning tank, realizes online resource
It utilizes.But this method fails to convert Tl(III for Tl(I)), and thallium is introduced into liquid phase, it is be easy to cause secondary pollution, no
Thallium can be recycled, the waste of resource is caused.
In recent years, with the continuous development of electronic technology, thallium is in semicon industry, pharmacy, space flight, military affairs etc. demand
It is increasing, a kind of purification tail gas containing thallium is researched and developed, and the technique for recycling thallium then becomes more and more important.Difficulty is removed in exhaust gas thallium
Greatly, demand is urgent and correlative study lacks under the situation of blank out, and the utility model efficiently safe and economically can remove exhaust gas
Middle thallium, and the recycling for completing thallium can bring huge economic interests to enterprise and society, have great promotional value.
Summary of the invention
The purpose of this utility model is to provide a kind of purification of thallium in flue gas during smelting and recyclable device, including heat exchanger 2,
Cyclone dust collectors 3, cyclic absorption pond I 5, cyclic absorption pond II 6, demister 7, dehumidifier 8, packed tower I 9, are filled out electric precipitator 4
Expect tower II 10, circulation parsing pond I 11, circulation parsing pond II 12, electrolytic cell I 13, electrolytic cell II 14, metallurgical furnace 1, heat exchanger 2, rotation
Wind deduster 3, electric precipitator 4 are sequentially communicated, and electric precipitator 4 is connected to cyclic absorption pond I 5, cyclic absorption pond II 6 respectively, are followed
Ring absorption cell I 5, cyclic absorption pond II 6 are connected to after converging with demister 7, and demister 7 is connected to dehumidifier 8, and dehumidifier 8 is distinguished
Be connected to packed tower I 9, packed tower II 10, packed tower I 9, packed tower II 10 discharge gate converge after respectively with circulation parse pond I
11, circulation parsing pond II 12 be connected to, circulation parsing pond I 11, circulation parsing pond II 12 converge after respectively with electrolytic cell I 13, electrolysis
Pond II 14 is connected to.
Valve is equipped between two containers being connected in device described in the utility model.
The use process of device where the utility model: tail gas is generated from metallurgical furnace 1, is cooled down by heat exchanger 2, through revolving
Wind deduster 3,4 dedusting of electric precipitator, subsequently into the diluted acid in cyclic absorption pond I 5, II 6 pond of cyclic absorption pond being 5% or so
Then solution, tail gas are discharged by entering packed tower I 9 and packed tower II 10 after demister 7 and the drying of dehumidifier 8；Circulation is inhaled
After solution in receives pond I 5 and cyclic absorption pond II 6 absorbs saturation, it is transferred to circulation parsing pond I 11, circulation parsing pond II 12,
After the completion of desorption, the solution containing thallium is passed into electrolytic cell I 13 and middle electrolytic cell II 14, obtains pure thallium simple substance in cathode,
Catalyst after desorption can be refilled with, recycling.
The utility model has the beneficial effects that
The utility model can efficiently and rapidly remove thallium (the thallium-containing quantity < in the tail gas after removing in industrial smelting exhaust
0.05 μ g/m3)；And the thallium being adsorbed can be recycled, the final simple substance thallium (purity >=99.99%) for obtaining high-purity can be direct
It sells or uses.While removing thallium, solid and liquid are recycled during realizing, and prevent secondary pollution.
The utility model relates to the processes such as parsing, desorption, electrolysis, catalyst be all this field conventional method and mistake
Journey, the utility model are related to by ingenious, these processes are organically combined final realization, and efficiently and rapidly tail is smelted in removing industry
Thallium in gas.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1- metallurgical furnace；2- heat exchanger；3- cyclone dust collectors；4- electric precipitator；5- cyclic absorption pond I；6- circulation is inhaled
Receives pond II；7- demister；8- dehumidifier；9- packed tower I；10- packed tower II；11- circulation parsing pond I；12- circulation parsing pond
Ⅱ；13- electrolytic cell I；14- electrolytic cell II.
Specific embodiment
Invention is further described in detail combined with specific embodiments below, but protection scope of the present invention is not limited to
The content.
Embodiment 1
The purification of thallium and recyclable device in a kind of flue gas during smelting, including heat exchanger 2, cyclone dust collectors 3, electric precipitator 4, follow
Ring absorption cell I 5, demister 7, dehumidifier 8, packed tower I 9, packed tower II 10, circulation parsing pond I 11, follows cyclic absorption pond II 6
Ring parses pond II 12, electrolytic cell I 13, electrolytic cell II 14, and metallurgical furnace 1, heat exchanger 2, cyclone dust collectors 3, electric precipitator 4 successively connect
Logical, electric precipitator 4 is connected to cyclic absorption pond I 5, cyclic absorption pond II 6 respectively, and cyclic absorption pond I 5, cyclic absorption pond II 6 are converged
It being connected to after conjunction with demister 7, demister 7 is connected to dehumidifier 8, and dehumidifier 8 is connected to packed tower I 9, packed tower II 10 respectively,
Packed tower I 9, packed tower II 10 discharge gate converge after respectively with circulation parsing pond I 11, circulation parsing pond II 12 be connected to, circulation
Parsing pond I 11, circulation parsing pond II 12 are connected to electrolytic cell I 13, electrolytic cell II 14 respectively after converging；Two containers being connected
Between be equipped with valve.
Detailed process are as follows: tail gas is generated from metallurgical furnace 1, is cooled to by heat exchanger 2 lower than 100 degrees Celsius, through whirlwind
Deduster 3,4 dedusting of electric precipitator get rid of dust and partial impurities compound in 99% flue gas, prevent it from entering subsequent dress
It sets, makes catalyst poisoning；Sulfuric acid solution is obtained subsequently into cyclic absorption pond I 5, II pond 6(of cyclic absorption pond for 4%), into one
Step removal foreign gas and soluble compound；Tail gas removes steam contained in gas by demister 7 and dehumidifier 8, prevents
Sealing enters packed tower；Then gas is passed through packed tower I 9 and packed tower II 10 is handled, and gaseous state thallium is oxidized or adsorbent arrives
Adsorbent surface, purified tail gas direct emission；Catalyst after reaction is passed into circulation parsing pond I 11, circulation parsing
(desorption liquid 3%HNO in pond II 12, in circulation parsing pond3Mixed with 3%HCl), desorption process 9 hours, subsequent 10kHz, surpass
Several strong 120W/m-2Under the conditions of be ultrasonically treated 1.5 hours；Solution is transferred to electrolytic cell I 13 and middle electrolytic cell after absorbing saturation
II 14, the anode chamber of electrolytic cell is packed into 2%NaOH solution, and cathode uses stainless steel plate, and anode uses insoluble electrode；After control
Voltage is that 2V is electrolysed；Thallium is slowly precipitated in cathode, and collection is placed on 40 DEG C of dryings of baking oven and weighs, and is protected from light and seals up for safekeeping；Desorption
Catalyst afterwards can be refilled with, recycling.
Claims (2)
1. the purification of thallium and recyclable device in a kind of flue gas during smelting, which is characterized in that including heat exchanger (2), cyclone dust collectors
(3), electric precipitator (4), cyclic absorption pond I (5), cyclic absorption pond II (6), demister (7), dehumidifier (8), packed tower I
(9), packed tower II (10), circulation parsing pond I (11), circulation parsing pond II (12), electrolytic cell I (13), electrolytic cell II (14), smelting
Golden furnace (1), heat exchanger (2), cyclone dust collectors (3), electric precipitator (4) are sequentially communicated, electric precipitator (4) respectively with cyclic absorption
Pond I (5), cyclic absorption pond II (6) connection, connect after cyclic absorption pond I (5), cyclic absorption pond II (6) are converged with demister (7)
Logical, demister (7) is connected to dehumidifier (8), and dehumidifier (8) is connected to packed tower I (9), packed tower II (10) respectively, packed tower
I (9), packed tower II (10) discharge gate converge after respectively with circulation parsing pond I (11), circulation parsing pond II (12) be connected to, follow
Ring parsing pond I (11), circulation parsing pond II (12) are connected to electrolytic cell I (13), electrolytic cell II (14) respectively after converging.
2. the purification of thallium and recyclable device in flue gas during smelting according to claim 1, it is characterised in that: two appearances being connected
Valve is equipped between device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780377.3U CN209286942U (en) | 2018-10-31 | 2018-10-31 | The purification of thallium and recyclable device in a kind of flue gas during smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780377.3U CN209286942U (en) | 2018-10-31 | 2018-10-31 | The purification of thallium and recyclable device in a kind of flue gas during smelting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209286942U true CN209286942U (en) | 2019-08-23 |
Family
ID=67647266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821780377.3U Expired - Fee Related CN209286942U (en) | 2018-10-31 | 2018-10-31 | The purification of thallium and recyclable device in a kind of flue gas during smelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209286942U (en) |
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2018
- 2018-10-31 CN CN201821780377.3U patent/CN209286942U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190823 Termination date: 20201031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |