CN101450826B - Cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method and recovery device - Google Patents
Cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method and recovery device Download PDFInfo
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- CN101450826B CN101450826B CN2007101930347A CN200710193034A CN101450826B CN 101450826 B CN101450826 B CN 101450826B CN 2007101930347 A CN2007101930347 A CN 2007101930347A CN 200710193034 A CN200710193034 A CN 200710193034A CN 101450826 B CN101450826 B CN 101450826B
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- China
- Prior art keywords
- containing sewage
- cyanogens
- cyanide
- sewage water
- vacuum evaporation
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- 239000010865 sewage Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007738 vacuum evaporation Methods 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 37
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 22
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 8
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 10
- 238000006396 nitration reaction Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 9
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- MNWBNISUBARLIT-UHFFFAOYSA-N sodium cyanide Chemical compound [Na+].N#[C-] MNWBNISUBARLIT-UHFFFAOYSA-N 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 4
- 239000008236 heating water Substances 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 abstract description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052737 gold Inorganic materials 0.000 abstract description 4
- 239000010931 gold Substances 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- GTLDTDOJJJZVBW-UHFFFAOYSA-N zinc cyanide Chemical compound [Zn+2].N#[C-].N#[C-] GTLDTDOJJJZVBW-UHFFFAOYSA-N 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention relates to a cyanide-containing sewage multi-effect vacuum evaporation recovery method and a cyanide-containing sewage multi-effect vacuum evaporation recovery device. The cyanide-containing sewage multi-effect vacuum evaporation recovery method comprises the following steps: firstly, cyanide-containing sewage and sulfuric acid are sucked and escaped into a cyanide reaction tower under the action of vacuum negative pressure; secondly, when the cyanide-containing sewage is sprayed and declined from the upper part, hydrocyanic acid is evaporated and escaped from the sewage and separated out under the action of vacuum suction, sucked into a vacuum system, fully mixed with lye and absorbed, and subjected to chemical reaction to generate liquid sodium cyanide; and thirdly, the generated sodium cyanide is returned back to the process of cyanidation and gold extraction and reutilized. The method has simple technological process, performs one-off multi-effect vacuum evaporation recovery, has the recovery rate of 99 percent, solves the problems of high processing cost and easy generation of secondary pollution in the prior cyanide-containing sewage treatment process, achieves the aim of changing waste into valuable, directly recovers and reutilizes the cyanide-containing sewage, greatly saves the cost, and is energy-saving and environment-friendly.
Description
Technical field
The present invention relates to a kind of cyanogens-containing sewage water recovery method, simultaneously, the present invention also aims to provide a kind of cyanogens-containing sewage water multiple-effect vacuum evaporation retracting device.
Background technology
The existing history that goes up a century of extraction of gold by cyanidation is that gold mine is put forward golden topmost method always.Two kinds of different cyanidation technologies are arranged at present, and promptly two kinds of methods of zinc cyanide powder substitution depositing technology and carbon slurry process all produce the waste water that contains a large amount of cyanides.Because cyanide is hypertoxic, therefore, cyaniding gold extraction waste water should be deviate from poisonous cyanide before discharging, make its discharge standard that reaches regulation, just can enter sewer or small stream korneforos, and handling the back index must be definitely up to standard; If the not treated water body that enters will cause severe contamination, and cyano complex influence the further processing of waste water, therefore at first will remove the cyanide in the waste water, handles water-quality determination afterwards and just can be for further processing after up to standard.The common processing method of cyanide wastewater has alkaline chlorination process, electrolysis, ion-exchange, activated carbon method etc.These methods are not weak effects, are exactly the cost height, and what have also exists secondary pollution and influence recycling of water body because of adding chemicals.
Summary of the invention
The object of the present invention is to provide a kind of cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method, avoided handling the expensive of cyanogens-containing sewage water, to reach the purpose that turns waste into wealth.
To achieve these goals, technical program of the present invention lies in having adopted a kind of cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method, may further comprise the steps: earlier with cyanogens-containing sewage water and sulfuric acid, under the negative pressure of vacuum effect, from sucking ease cyanogen reaction tower, cyanogens-containing sewage water is in the process that the top spray descends, hydrogen cyanide is under the vacuum draw effect, evaporation is overflowed and is separated from sewage, be inhaled into vacuum system, and with the abundant blended absorbent of alkali lye, produce chemical reaction and generate liquid sodium cyanide, the Cymag of generation turns back in the cyanidation gold-extracted process and is used again.
Described negative pressure of vacuum is-0.08-0.09Mpa.
Described alkali lye is that concentration is 35% sodium hydroxide solution.
Adopt Steam Heating in the production process, to accelerate chemical reaction and evaporation rate.
Simultaneously, technical scheme of the present invention has also adopted a kind of cyanogens-containing sewage water multiple-effect vacuum evaporation retracting device, comprise tower body, the upper space of tower body is the nitration mixture chamber, the below of nitration mixture chamber is spray filler chamber, spray filler chamber links to each other with efficiently being subjected to barrel, efficiently is subjected to the barrel below to be the mud chamber, and the bottom, mud chamber is for concentrating the awl bucket.
Be provided with sulfuric acid inlet and cyanogens-containing sewage water inlet on the top of nitration mixture chamber.
The vacuum pumping chamber outlet is arranged on the tower body top.
Described concentrated awl bucket outer setting has a Steam Heating water jacket.
The precipitation bucket lower end, bottom that concentrates the awl bucket is provided with plasma discharge mouth and condensation-water drain.
On the precipitation bucket sidewall, also be provided with inspection manhole.
Described tower body is provided with the vacuum meter scale.
The described barrel that efficiently is subjected to links to each other with an efficient hang plate, efficiently is being subjected to be provided with downflow weir around the barrel, and the discharge weir is connected with leakage fluid dram on the tower body.
Utilize retracting device of the present invention, under the negative pressure of vacuum effect, cyanogens-containing sewage water and sulfuric acid suck the nitration mixture chamber in the tower body certainly via cyanogens-containing sewage water inlet, the sulfuric acid inlet on vacuum evaporation recovery tower top respectively, after fully mixing, mixing material is sprayed by spray piping, enters filler chamber, during chemical reaction takes place, complexing cryanide ion in the cyanogens-containing sewage water and the reaction of the hydrogen ion in the sulfuric acid generate hydrogen cyanide promptly: (CN)
-+ H
+=HCN ↑, HCN evaporates, and owing to the effect of negative pressure of vacuum, the hydrogen cyanide of volatilization is inhaled in the vacuum jet pump simultaneously, and hydrogen cyanide and alkali reaction absorb, and generate liquid sodium cyanide (HCN+NaOH=NaCN+H
2O), return cyanidation gold-extracted process and be used again, thereby reached the purpose that Cymag is reclaimed in the full acidifying of cyanogens-containing sewage water.For accelerating chemical reaction and evaporation rate, concentrate awl and following partial design Steam Heating water jacket, production process can be carried out the Steam Heating operation.
Method technical process of the present invention is simple, and a multiple-effect vacuum evaporation is reclaimed, and the rate of recovery reaches 99%.Avoid the processing cost height that caused in the existing processing cyanogens-containing sewage water process, caused secondary pollution problem easily, reached the purpose that turns waste into wealth.Cyanogens-containing sewage water directly reclaims and utilizes again, has saved cost greatly, energy-conserving and environment-protective.
Description of drawings
Fig. 1 is a process chart of the present invention;
Fig. 2 is the structural representation of retracting device of the present invention.
The specific embodiment
As shown in Figure 1, recovery method of the present invention is: earlier with cyanogens-containing sewage water and sulfuric acid, wherein the adding proportion of sulfuric acid and cyanogens-containing sewage water is: according to the pH value in disposing of sewage with contain the cyanogen amount and how much determine, under the negative pressure of vacuum effect, pressure is-0.08Mpa, from sucking ease cyanogen reaction tower, cyanogens-containing sewage water is in the process that tower body top spray descends, hydrogen cyanide is under the vacuum draw effect, evaporation is overflowed and is separated from sewage, is inhaled into vacuum system, and with concentration be 35% the abundant blended absorbent of sodium hydroxide solution, produce chemical reaction and generate liquid sodium cyanide, the Cymag of generation turns back in the cyanidation gold-extracted process and is used again.
As shown in Figure 2, retracting device of the present invention comprises tower body 1, the upper space of tower body 1 is nitration mixture chamber 2, the below of nitration mixture chamber 2 is spray filler chamber 3, spray filler chamber 3 links to each other with efficiently being subjected to barrel 4, and efficiently being subjected to barrel 4 belows is mud chamber 5, and 5 bottoms, mud chamber are for concentrating awl bucket 6, concentrating awl bucket outer setting has a Steam Heating water jacket 7, to accelerate chemical reaction and evaporation rate.Tower body is provided with vacuum meter scale 15, is provided with sulfuric acid inlet 8 and cyanogens-containing sewage water inlet 9 on the top of nitration mixture chamber 2, and vacuum pumping chamber outlet 10 is arranged on tower body 1 top.Bottom precipitation bucket 11 lower ends that concentrate awl bucket 6 are provided with plasma discharge mouth 12 and condensation-water drain 13, also are provided with inspection manhole 14 on precipitation bucket 11 sidewalls.Linked to each other with an efficient hang plate 16 by barrel 4, efficiently be subjected to be provided with downflow weir 17 around the barrel 4, discharge weir 17 is connected with leakage fluid dram 18 on the tower body.Liquid such as the cuprous rhodanide that generates in the course of reaction efficiently are subjected to barrel 4 to enter into mud chamber, bottom 5 by the center, clarify precipitation; Liquid is fed by barrel 4 efficiently by the center, through efficient hang plate 16, behind the peripheral overflow weir 17, be clarified solution and overflow, and enters the reaction of neutralization reaction groove, and back up to standard is from liquid outlet 18 dischargings; Solids such as the cuprous rhodanide precipitation that generates is gone into precipitation bucket 11 through concentrating awl bucket 6, at last by being pumped into the filter press press filtration, forming copper cake and sells outward.
It should be noted last that: above embodiment is only in order to explanation, and unrestricted technical scheme of the present invention, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method, it is characterized in that: may further comprise the steps: earlier with cyanogens-containing sewage water and sulfuric acid, under the negative pressure of vacuum effect, from sucking ease cyanogen reaction tower, cyanogens-containing sewage water is in the process that the top spray descends, hydrogen cyanide is under the vacuum draw effect, evaporation is overflowed and is separated from sewage, be inhaled into vacuum system, and with the abundant blended absorbent of alkali lye, produce chemical reaction and generate liquid sodium cyanide, the Cymag of generation turns back in the cyanidation gold-extracted process and is used again.
2. cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method according to claim 1 is characterized in that: described negative pressure of vacuum is-0.08-0.09Mpa.
3. cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method according to claim 1 is characterized in that: described alkali lye is that concentration is 35% sodium hydroxide solution.
4. cyanogens-containing sewage water multiple-effect vacuum evaporation retracting device, it is characterized in that: comprise tower body, the upper space of tower body is the nitration mixture chamber, the below of nitration mixture chamber is spray filler chamber, spray filler chamber links to each other with efficiently being subjected to barrel, efficiently is subjected to the barrel below to be the mud chamber, and the bottom, mud chamber is for concentrating the awl bucket; Be provided with sulfuric acid inlet and cyanogens-containing sewage water inlet on the top of nitration mixture chamber; The vacuum pumping chamber outlet is arranged on the tower body top.
5. cyanogens-containing sewage water multiple-effect vacuum evaporation retracting device according to claim 4 is characterized in that: described concentrated awl bucket outer setting has a Steam Heating water jacket.
6. cyanogens-containing sewage water multiple-effect vacuum evaporation retracting device according to claim 5 is characterized in that: the precipitation bucket lower end, bottom that concentrates the awl bucket is provided with plasma discharge mouth and condensation-water drain.
7. cyanogens-containing sewage water multiple-effect vacuum evaporation retracting device according to claim 6 is characterized in that: also be provided with inspection manhole on the precipitation bucket sidewall.
8. according to arbitrary described cyanogens-containing sewage water multiple-effect vacuum evaporation retracting device among the claim 4-7, it is characterized in that: the described barrel that efficiently is subjected to links to each other with an efficient hang plate, efficiently be subjected to be provided with downflow weir around the barrel, the discharge weir is connected with leakage fluid dram on the tower body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101930347A CN101450826B (en) | 2007-12-04 | 2007-12-04 | Cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method and recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101930347A CN101450826B (en) | 2007-12-04 | 2007-12-04 | Cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method and recovery device |
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| Publication Number | Publication Date |
|---|---|
| CN101450826A CN101450826A (en) | 2009-06-10 |
| CN101450826B true CN101450826B (en) | 2011-07-20 |
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| CN2007101930347A Expired - Fee Related CN101450826B (en) | 2007-12-04 | 2007-12-04 | Cyanogens-containing sewage water multiple-effect vacuum evaporation recovery method and recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111874981A (en) * | 2020-07-31 | 2020-11-03 | 鲁东大学 | A kind of gold smelting wastewater treatment technology |
| CN113045045A (en) * | 2021-03-26 | 2021-06-29 | 长春黄金研究院有限公司 | Complete device and method for treating acidified cyanide-containing wastewater by using atomized gas normal-temperature condensation method |
| CN113184932B (en) * | 2021-04-26 | 2022-03-29 | 武汉天空蓝环保科技有限公司 | Utilize flue gas evaporative concentration device and desulfurization effluent disposal system |
| CN114477434A (en) * | 2022-01-24 | 2022-05-13 | 重庆大学 | Anaerobic reaction system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4756797A (en) * | 1986-10-20 | 1988-07-12 | Kamyr, Inc. | Multiple effect evaporator with an evaporative condenser as a liquid evaporation effect |
| CN1048566A (en) * | 1990-07-17 | 1991-01-16 | 中国黄金总公司乌拉嘎金矿 | Method for treating cyanide-containing tailing water in gold chloride extraction plant |
| CN1352310A (en) * | 2001-11-09 | 2002-06-05 | 清华大学 | Technological method for reextracting gold from cyanide gold refining wast slag |
| CN201140988Y (en) * | 2007-12-04 | 2008-10-29 | 王安理 | Multi-effect vacuum evaporation reclaimer for cyanogen-contained sullage |
-
2007
- 2007-12-04 CN CN2007101930347A patent/CN101450826B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4756797A (en) * | 1986-10-20 | 1988-07-12 | Kamyr, Inc. | Multiple effect evaporator with an evaporative condenser as a liquid evaporation effect |
| CN1048566A (en) * | 1990-07-17 | 1991-01-16 | 中国黄金总公司乌拉嘎金矿 | Method for treating cyanide-containing tailing water in gold chloride extraction plant |
| CN1352310A (en) * | 2001-11-09 | 2002-06-05 | 清华大学 | Technological method for reextracting gold from cyanide gold refining wast slag |
| CN201140988Y (en) * | 2007-12-04 | 2008-10-29 | 王安理 | Multi-effect vacuum evaporation reclaimer for cyanogen-contained sullage |
Non-Patent Citations (2)
| Title |
|---|
| 冯肇伍.含氰废水处理及循环使用经验.《有色矿冶》.2001,第17卷(第6期),第22页右栏倒数第7行至23页右栏倒数第7行. * |
| 邓彤.氰化法提金废水处理.《黄金科学技术》.1995,第3卷(第4期),第37页第8行至第11行. * |
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