CN104032328B - A kind of environment-friendly and energy-efficient diaphragm electrolysis apparatus - Google Patents
A kind of environment-friendly and energy-efficient diaphragm electrolysis apparatus Download PDFInfo
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- CN104032328B CN104032328B CN201410244250.XA CN201410244250A CN104032328B CN 104032328 B CN104032328 B CN 104032328B CN 201410244250 A CN201410244250 A CN 201410244250A CN 104032328 B CN104032328 B CN 104032328B
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Abstract
The present invention relates to a kind of environment-friendly and energy-efficient diaphragm electrolysis apparatus, including electrolysis bath, minus plate and positive plate, this minus plate and positive plate are positioned in electrolysis bath, this device includes acid mist capturing device, including acid fog absorption tower, water pump and air exhauster, diaphragm frame group it is provided with between minus plate and positive plate, both sides, diaphragm frame group top are provided with acid mist collecting hole, and form acid mist trapping passage, the acid mist produced on anode is trapped by air exhauster, column plate, the bottom of acid fog absorption tower side and the composition water circulation that is connected between upper end it is provided with water pump in acid fog absorption tower.Beneficial effect of the present invention: by arranging diaphragm frame group, it is achieved anode chamber's integral sealing, effectively collects anode acid mist, eliminates and pollute；Meanwhile, catholyte forced circulation device, it is achieved catholyte forced circulation, reaches to eliminate concentration polarization, improves the purpose of cathode efficiency, thus reduce power consumption；Realize electrolytic bath outer circulation cooling, improve cooling effectiveness, reduce energy consumption, the purpose of reduction cost.
Description
Technical field
The present invention relates to the electrolysis fields such as manganese, nickel, cobalt, a kind of environment-friendly and energy-efficient diaphragm electrolysis apparatus.
Background technology
At present in the actual production of the diaphragm electrolysises such as manganese, nickel, cobalt, anode generation electrochemical reaction produces a large amount of gases, these
When gas separates out on pole plate, the initial stage is attached to electrode surface, along with bubble parameters, when bubble buoyancy is more than adhesive force, gas
Bubble departs from from pole plate, and floats from solution, during bubble floating, can mutually collide and form larger bubble.Work as bubble
When arriving liquid level, due to the effect of surface liquid tension force, bubble overflows inevitable carrying of liquids from solution, these carrying of liquids
After bubble runs into groove face cold air, burst, form liquid mist.Owing to solution composition is acid, thus formed in a large number at groove face
Acid mist.These acid mists not only serious harm operating personnel's is healthy, pollutes on-the-spot and environment around, and to Factory Building,
Equipment causes heavy corrosion, and adds certain reagent consumption.
Meanwhile, the diaphragm electrolysis techniques such as the most traditional manganese, nickel, cobalt all use the open type diaphragm frame, electrolyte feed liquor mode to be
Low discharge low speed, concentrated area feed liquor mode, electrolyte is installed cooling water drainage in every electrolysis bath carry out point as cooled down employing
Cold scattering mode but.Owing to using open type diaphragm frame, making anode acid mist to collect, in causing Factory Building, acid mist pollution is serious,
Can only be ventilated by big flow and dissipate, it is impossible to thoroughly solve acid mist pollution problem；And low discharge, concentrated area feed liquor mode,
The manganese ion making cathode zone can not get effectively supplementing, and causes negative electrode concentration polarization serious, and cathode efficiency is only capable of reaching 70%
Left and right；Owing to being respectively provided with cooling water drainage in every electrolysis bath, in not only making electrolysis bath, the useful space diminishes, and affects production capacity and promotes,
And cooling water pipeline arranges complexity, cost of investment is higher, and its operating cost is higher.
Summary of the invention
It is an object of the invention to the deficiency overcoming prior art to exist, and a kind of environment-friendly and energy-efficient diaphragm electrolysis apparatus is provided, from
Fundamentally eliminate acid mist pollution, improve the diaphragm electrolysis technique such as cathode efficiency, the reduction manganese of cost of investment, nickel, cobalt, no
Only can reach easy and simple to handle, reduce production cost, clean the purpose produced, and one-time investment can be greatly lowered
This.
It is an object of the invention to complete by following technical solution, this environment-friendly and energy-efficient diaphragm electrolysis apparatus, including electrolysis
Groove, minus plate and positive plate, this minus plate and positive plate be positioned in electrolysis bath, and this device includes acid mist capturing device, described
Acid mist capturing device include acid fog absorption tower, water pump and air exhauster, be provided with for whole between described minus plate and positive plate
Body seals the diaphragm frame group of anode chamber, and both sides, diaphragm frame group top are provided with acid mist collecting hole, and form the acid mist that diaphragm frame group is built-in
Trapping passage, this acid mist trapping passage is connected with the acid mist import on acid fog absorption tower by acid mist collecting pipe, and anode produces
Acid mist trapped by the air exhauster that is connected with acid fog absorption tower top, be provided with the column plate being interspersed in described acid fog absorption tower,
The bottom of acid fog absorption tower side is connected with water pump by pipeline with between upper end and constitutes water and circulates.
As preferably, this device also includes that chiller concentrated by catholyte forced circulation device and catholyte, and described catholyte is strong
Circulating device processed includes that circulation pipe, circulating slot and circulating pump, described catholyte concentrate chiller to include being arranged in circulating slot
Cooling coil；Circulation pipe is arranged in electrolysis bath, and circulation pipe is provided with feed liquor shower nozzle, and this feed liquor nozzle layout of sprinkler is at each the moon
The sidepiece of pole plate or bottom；Two sides of upper part of the electrolytic cell are respectively equipped with catholyte overfall and anolyte overfall, described negative electrode
Hydrorrhea head piece is connected with circulating slot by pipeline, and circulating slot is connected with circulation pipe composition catholyte forced circulation by circulating pump.
The invention have the benefit that this device solves acid mist disperse during diaphragm electrolysis from root and pollutes the problem of environment,
Reach to eliminate environmental pollution, it is achieved the purpose that cleaning produces；Meanwhile, also improve cathode efficiency, reduce power consumption cost,
Reach energy-saving and cost-reducing purpose；Concentrate cooling by realizing electrolyte, not only reduce investment, and reduce operating cost.
Accompanying drawing explanation
Fig. 1 is the acid mist capturing device structural representation of the present invention.
Fig. 2 is that the structural representation between chiller and catholyte forced circulation device concentrated by the catholyte of the present invention.
Fig. 3 is the catholyte forced circulation device main TV structure schematic diagram of the present invention.
Fig. 4 is the catholyte forced circulation device plan structure schematic diagram of the present invention.
Fig. 5 is the catholyte forced circulation device side-looking structural representation of the present invention.
Label in accompanying drawing is respectively as follows: 1, electrolysis bath；2, minus plate；3, positive plate；4, acid mist capturing device；
5, catholyte forced circulation device；6, chiller concentrated by catholyte；7, diaphragm frame group；11, catholyte overfall；
12, anolyte overfall；41, acid fog absorption tower；42, acid mist import；43, water pump；44, air exhauster；45、
Column plate；46, acid mist collecting pipe；51, circulation pipe；52, circulating slot；53, circulating pump；54, feed liquor shower nozzle；
61, cooling coil；71, acid mist collecting hole；72, acid mist trapping passage.
Detailed description of the invention
Below in conjunction with drawings and Examples the present invention done detailed introduction:
As Figure 1-5, this environment-friendly and energy-efficient diaphragm electrolysis apparatus, including electrolysis bath 1, minus plate 2 and positive plate 3, should
Minus plate 2 and positive plate 3 are positioned in electrolysis bath 1, and this device includes acid mist capturing device 4, catholyte forced circulation device 5
Concentrating chiller 6 with catholyte, described acid mist capturing device 4 includes acid fog absorption tower 41, water pump 43 and air exhauster 44,
The diaphragm frame group 7 for integral sealing anode chamber, diaphragm frame group 7 top it is provided with between described minus plate 2 and positive plate 3
Both sides are provided with acid mist collecting hole 71, and form the acid mist trapping passage 72 that diaphragm frame group 7 is built-in, and this acid mist trapping passage 72 leads to
Crossing acid mist collecting pipe 46 to be connected with the acid mist import 42 on acid fog absorption tower 41, the acid mist that anode produces is by inhaling with acid mist
The air exhauster 44 receiving tower 41 top connected traps, and is provided with the column plate 45 being interspersed, acid mist in described acid fog absorption tower 41
The bottom of side, absorption tower 41 is connected with water pump 43 with passing through pipeline between upper end and constitutes water circulation.Described catholyte is forced to follow
Loop device 5 includes that circulation pipe 51, circulating slot 52 and circulating pump 53, described catholyte concentrate chiller 6 to include being arranged on
Cooling coil 61 in circulating slot 52；Circulation pipe 51 is arranged in electrolysis bath 1, and circulation pipe 51 is provided with feed liquor shower nozzle 54,
This feed liquor shower nozzle 54 is arranged in sidepiece or the bottom of each minus plate 2；Two sides on electrolysis bath 1 top are respectively equipped with catholyte overflow
Mouth 11 and anolyte overfall 12, described catholyte overfall 11 is connected with circulating slot 52 by pipeline, circulating slot 52
It is connected with circulation pipe 51 composition catholyte forced circulation by circulating pump 53.
The acid mist capturing device 4 that apparatus of the present invention relate to, is by diaphragm frame group 7, it is achieved anode chamber's integral sealing, it is to avoid acid mist
Excessive, beneficially acid mist collecting.And trapping passage 72 at the built-in acid mist of diaphragm frame group 7, the acid mist making anode produce traps completely
And recovery, effectively collect anode acid mist.In electrolytic process, anode constantly produces acid mist, and these acid mists are by each anode chamber
The acid mist collecting hole 71 in diaphragm frame group 7 that top is arranged carries out sealing collects, and logical by the trapping of diaphragm frame group 7 built-in acid mist
Road 72, under the effect of outside air exhauster 44, is pooled in acid mist collecting pipe 46, enters finally in acid fog absorption tower 41,
Return after absorbing and leach operation use.Fig. 1 is shown in by its device schematic diagram.Anode acid mist is absorbed by trapping, acid mist collecting rate
Reaching more than 90%, groove face acid mist concentration is less than 5mg/Nm3。
The catholyte forced circulation device 5 that apparatus of the present invention relate to, is by electrolyte circulation system, by the negative electrode in electrolysis bath
After liquid is extracted out, return again to electrolysis bath 1, accelerate flow stream velocity in electrolysis bath, and for every piece of minus plate 2, at its sidepiece or the end
Portion install feed liquor shower nozzle 54, make solution electrolyte around negative electrode Rapid Circulation flowing, reduce negative electrode concentration polarization, reduce hydrogen and
The precipitation of foreign ion, thus increase substantially cathode efficiency.By catholyte feed liquor flow in electrolysis bath 1 by 30-80m3/Mt
Bring up to 100-3000m3/ Mt, then cathode efficiency improves 2-10%, reaches 80-96%, each electrolysis bath Metal Production ability
Then improving 5%-100%, energy consumption of unit product reduces by more than 5%.Fig. 3 to 5 is shown in by its device schematic diagram.
Chiller concentrated by the catholyte that apparatus of the present invention relate to, and is from flowing in circulating slot 52 by the catholyte of forced circulation, and
Cooling coil 61 is set in circulating slot 52, it is achieved cooling concentrated by electrolyte.Electrolyte is carried out external after concentrating cooling, cooling
Power consumption reduces by 5%, and electrolysis bath space increases 10%, and cathode size can be made to increase by 10%, and under same current density, production capacity improves
About 10%.Fig. 2 is shown in by its device schematic diagram.
Embodiment 1, as a example by electrolytic manganese
Manganese sulfate solution adjusts pH to 6.0-7.5, and temperature controls 38-42 DEG C, and this manganese sulfate solution flow to certainly from high-order chute
In electrolysis bath 1, after manganese sulfate solution is full of electrolysis bath, open catholyte circulating pump 54, make catholyte in electrolysis bath from
Circulation, and form forced flow at every piece of cathode surface.When catholyte circular flow reaches 1500m3/ Mt, by cathode-current density
It is promoted to 350A/m2, after being electrolysed 1 day, take out cathode product, its cathode efficiency reaches 85%.
Embodiment 2 is as a example by electrolytic manganese
Manganese sulfate solution adjusts pH to 6.0-7.5, and temperature controls 38-42 DEG C, and this manganese sulfate solution flow to certainly from high-order chute
In electrolysis bath 1, after manganese sulfate solution is full of electrolysis bath, open catholyte circulating pump 54, make catholyte in electrolysis bath from
Circulation, and form forced flow at every piece of cathode surface.When catholyte circular flow reaches 1000m3/ Mt, by cathode-current density
It is promoted to 350A/m2, after being electrolysed 1 day, take out cathode product, its cathode efficiency reaches 82%.
Embodiment 3 is as a example by electrolytic manganese
Manganese sulfate solution adjusts pH to 6.0-7.5, and temperature controls 38-42 DEG C, and this manganese sulfate solution flow to certainly from high-order chute
In electrolysis bath 1, after manganese sulfate solution is full of electrolysis bath, open catholyte circulating pump 54, make catholyte in electrolysis bath from
Circulation, and form forced flow at every piece of cathode surface.When catholyte circular flow reaches 800m3/ Mt, by cathode-current density
It is promoted to 350A/m2, after being electrolysed 1 day, take out cathode product, its cathode efficiency reaches 80%.
Embodiment 4 is as a example by electrolytic manganese
Manganese sulfate solution adjusts pH to 6.0-7.5, and temperature controls 38-42 DEG C, and this manganese sulfate solution flow to certainly from high-order chute
In electrolysis bath 1, after manganese sulfate solution is full of electrolysis bath, open catholyte circulating pump 54, make catholyte in electrolysis bath from
Circulation, and form forced flow at every piece of cathode surface.When catholyte circular flow reaches 500m3/ Mt, by cathode-current density
It is promoted to 350A/m2, after being electrolysed 1 day, take out cathode product, its cathode efficiency reaches 78%.
It is understood that it will be understood by those skilled in the art that to technical scheme and inventive concept equivalent in addition
Or change the protection domain that all should belong to appended claims of the invention.
Claims (1)
- null1. an environment-friendly and energy-efficient diaphragm electrolysis apparatus，Including electrolysis bath (1)、Minus plate (2) and positive plate (3)，This minus plate (2) and positive plate (3) are positioned in electrolysis bath (1)，It is characterized in that: this device includes acid mist capturing device (4)，Described acid mist capturing device (4) includes acid fog absorption tower (41)、Water pump (43) and air exhauster (44)，The diaphragm frame group (7) for integral sealing anode chamber it is provided with between described minus plate (2) and positive plate (3)，Diaphragm frame group (7) both sides, top are provided with acid mist collecting hole (71)，And form acid mist trapping passage (72) that diaphragm frame group (7) is built-in，This acid mist trapping passage (72) is connected with the acid mist import (42) on acid fog absorption tower (41) by acid mist collecting pipe (46)，The acid mist produced on anode is trapped by the air exhauster (44) being connected with acid fog absorption tower (41) top，The column plate (45) being interspersed it is provided with in described acid fog absorption tower (41)，The bottom of acid fog absorption tower (41) side is connected with water pump (43) with passing through pipeline between upper end and constitutes water circulation；This device also includes that chiller (6) concentrated by catholyte forced circulation device (5) and catholyte, described catholyte forced circulation device (5) includes that circulation pipe (51), circulating slot (52) and circulating pump (53), described catholyte concentrate chiller (6) to include the cooling coil (61) being arranged in circulating slot (52)；Circulation pipe (51) is arranged in electrolysis bath (1), and circulation pipe (51) is provided with feed liquor shower nozzle (54), and this feed liquor shower nozzle (54) is arranged in sidepiece or the bottom of each minus plate (2)；Two sides on electrolysis bath (1) top are respectively equipped with catholyte overfall (11) and anolyte overfall (12), described catholyte overfall (11) is connected with circulating slot (52) by pipeline, and circulating slot (52) is connected with circulation pipe (51) by circulating pump (53) and constitutes catholyte forced circulation.
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| CN105002523B (en) * | 2015-08-27 | 2017-12-12 | 陈金兰 | A kind of electrolytic manganese fluid infusion system |
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| CN105063670B (en) * | 2015-08-27 | 2017-10-13 | 江苏远华轻化装备有限公司 | Electrolytic manganese fluid infusion system |
| CN105063671B (en) * | 2015-08-27 | 2017-06-06 | 福建惠安县坚固电机有限公司 | Electrolytic manganese liquid supply device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030504U (en) * | 1987-12-31 | 1989-01-11 | 程国琇 | Gas absorbing tower |
| CN202078820U (en) * | 2011-04-07 | 2011-12-21 | 湖南省烟草公司永州市公司 | Smoke and dust removing desulfurization device |
| CN102631833A (en) * | 2012-03-30 | 2012-08-15 | 无锡市盛力达机械工程有限公司 | Multistage acid mist treatment tower |
| CN202590597U (en) * | 2012-03-30 | 2012-12-12 | 濮阳惠成电子材料股份有限公司 | Acid gas absorbing device |
| CN202993901U (en) * | 2012-12-25 | 2013-06-12 | 郑州博大淀粉机械工程技术有限公司 | Waste heat absorption tower used in process of producing alcohol by using starchiness raw materials |
| CN103409771A (en) * | 2013-08-13 | 2013-11-27 | 四川省尼科国润新材料有限公司 | Environment-friendly process unit and process for continuous stable production of electrolytic nickel or electrolytic cobalt |
| CN203440462U (en) * | 2013-09-06 | 2014-02-19 | 宁夏天元锰业有限公司 | Device for adjusting catholyte in manganese electrolytic cell |
| CN103657348A (en) * | 2012-09-21 | 2014-03-26 | 天津顺远精细化工有限公司 | Plate-type absorption tower |
| CN203923395U (en) * | 2014-06-04 | 2014-11-05 | 杭州三耐环保科技有限公司 | Environment-friendly and energy-efficient diaphragm electrolysis apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7378011B2 (en) * | 2003-07-28 | 2008-05-27 | Phelps Dodge Corporation | Method and apparatus for electrowinning copper using the ferrous/ferric anode reaction |
-
2014
- 2014-06-04 CN CN201410244250.XA patent/CN104032328B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030504U (en) * | 1987-12-31 | 1989-01-11 | 程国琇 | Gas absorbing tower |
| CN202078820U (en) * | 2011-04-07 | 2011-12-21 | 湖南省烟草公司永州市公司 | Smoke and dust removing desulfurization device |
| CN102631833A (en) * | 2012-03-30 | 2012-08-15 | 无锡市盛力达机械工程有限公司 | Multistage acid mist treatment tower |
| CN202590597U (en) * | 2012-03-30 | 2012-12-12 | 濮阳惠成电子材料股份有限公司 | Acid gas absorbing device |
| CN103657348A (en) * | 2012-09-21 | 2014-03-26 | 天津顺远精细化工有限公司 | Plate-type absorption tower |
| CN202993901U (en) * | 2012-12-25 | 2013-06-12 | 郑州博大淀粉机械工程技术有限公司 | Waste heat absorption tower used in process of producing alcohol by using starchiness raw materials |
| CN103409771A (en) * | 2013-08-13 | 2013-11-27 | 四川省尼科国润新材料有限公司 | Environment-friendly process unit and process for continuous stable production of electrolytic nickel or electrolytic cobalt |
| CN203440462U (en) * | 2013-09-06 | 2014-02-19 | 宁夏天元锰业有限公司 | Device for adjusting catholyte in manganese electrolytic cell |
| CN203923395U (en) * | 2014-06-04 | 2014-11-05 | 杭州三耐环保科技有限公司 | Environment-friendly and energy-efficient diaphragm electrolysis apparatus |
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