CN2536601Y - Apparatus for electrolytic reduction of europium - Google Patents
Apparatus for electrolytic reduction of europium Download PDFInfo
- Publication number
- CN2536601Y CN2536601Y CN 02232964 CN02232964U CN2536601Y CN 2536601 Y CN2536601 Y CN 2536601Y CN 02232964 CN02232964 CN 02232964 CN 02232964 U CN02232964 U CN 02232964U CN 2536601 Y CN2536601 Y CN 2536601Y
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- anode
- cathode
- anolyte
- outlet
- catholyte
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Abstract
The utility model relates to an apparatus for electrolytic reduction of europium, comprising a tank body, a cathode and an anode; wherein, an ion exchange membrane is arranged between the cathode and the anode, dividing the tank body into a cathode chamber and an anode chamber; the trough body is an open trough; the anode is a precious metal net coated with titanium, the electrodes are arrayed in a way of anode-diaphragm-cathode-cathode-diaphragm-cathode-cathode-diaphragm-anode, wherein, two anodes and two cathodes are arranged on both sides of the diaphragm respectively, which are multiple repeating units; a gas outlet is arranged on the top of the anode chamber, a stirrer is positioned in the cathode chamber, and an organic liquid protective layer with smaller density than water is above the liquid level; a liquid flow-tank pipe is arranged between the anode chambers and the cathode chambers respectively, having an inlet and an outlet of anode liquid, and having an inlet and an outlet of cathode liquid. The utility model is composed of a plurality of small tanks, which is easy disassembly and maintenance; the reduction under the protection of the organic liquid with lighter density than water can prevent the oxidation of divalent europium, and prevent the air block with the help of the outlet of gas; the distance between the anode and the cathode is large, ensuring the stirring and reduction, and is suitable for industrial application.
Description
Technical field
The utility model relates to a kind of equipment of electrolytic reduction europium.
Background technology
Europium belongs to rare earth element, generally exists with the trivalent form, but, can be reduced to divalence under certain condition.Industrial divalent europium and the trivalent rare earth ions difference on chemical property of usually utilizing, separate the preparation high-purity europium oxide of purifying, the industrial zinc powder reduction legal system that adopts is equipped with divalent europium more, for avoiding the pollution of zinc to the finished product, the human manufacturing two-valence europium by electrolysis reduction is arranged, wherein ion-exchange membrane electrolysis processing europium-containing solutions that adopt promptly utilize ionic membrane to separate cathode compartment and anolyte compartment more, realize the reduction of europium on negative electrode.Using more electrolysis system at present is to adopt the titanium net to make negative electrode, to produce hydrogen in the negative electrode on the electrolytic process, owing to adopt anode or anolyte difference, can produce chlorine or other gas at anode, existing electrolyzer is not considered the problem that negative electrode or anodic gas produce in electrolytic process, circulating tube gas is stifled can't to go on electrolysis thereby can in use cause.In addition, obnoxious flavour such as chlorine are also influential to facility environment, and is also unfavorable to safety in production.Therefore do not prevent the secondary oxidation measure of divalent europium in the existing electrolytic reduction europium equipment, and dismounting, maintenance are not too convenient, are necessary to provide a kind of equipment of novel electrolytic reduction europium.
Summary of the invention
The purpose of this utility model provides a kind of novel electrolytic reduction europium equipment, and this equipment is suitable for suitability for industrialized production, the production efficiency height, and the stifled situation of gas is improved, and reduces the divalent europium secondary oxidation, and is convenient to maintenance, changes barrier film and electrode.
For achieving the above object; the utility model is taked following design: a kind of equipment of electrolytic reduction europium; it comprises cell body; negative electrode; anode; between negative electrode and anode, ion-exchange membrane is arranged; and be divided into anolyte compartment and anolyte compartment; described cell body is spacious groove; described anode is that titanium is coated with precious metal network; the arrangement mode of electrode is anode-barrier film-negative electrode-negative electrode-barrier film-anode-anode-barrier film-negative electrode-negative electrode-barrier film-anode; there are two negative electrodes and two anodes in wherein membranous both sides; this structure is a plurality of repeating units; one pneumatic outlet is arranged at the top, anolyte compartment; adorn agitator in the cathode compartment; the organic liquid protective layer that is lighter than water is arranged on the liquid level, the anolyte circulating tube is arranged between the anolyte compartment, the catholyte circulating tube is arranged between the cathode compartment; one anolyte import is arranged in this equipment; the anolyte outlet has a catholyte import, the catholyte outlet.
This grooved belongs to box, is a kind of spacious groove, discharges from open-mouth no matter the gas that produces of negative electrode or anode is all very easy like this, in the pipe that circulates hardly, so worry that gas is stifled.
Chlorine (or gas) outlet is the obnoxious flavour (as chlorine, oxygen) that produces for direct anode.Can not run helter-skelter corrosion copper conductor, screw.Also can prevent to mix, cause thing to receive with cathodic hydrogen.
Male or female liquid all is to flow to a direction step by step, is a series system therefore, and after promptly stock liquid entered from ingress, had then just reduced in the exit.If do not reach requirement, can adjust by reducing or improve current density, feed liquid need not to circulate,
The unit number of electrolyzer can increase or reduce as required.
The control cathode current density just can be controlled reduction efficiency and current efficiency in the electrolytic process.
Description of drawings
Fig. 1 is a front view of the present utility model
Fig. 2 is the vertical view of Fig. 1
Fig. 3 is the utility model and external feed flow pipeline connection diagram
Embodiment
As shown in Figure 1 and Figure 2,1 is the anolyte compartment, pneumatic outlet 5 is arranged at its top, and this equipment has an anolyte import 6, anolyte outlet 9, one side of each anolyte compartment has anolyte circulating tube 2, this equipment has a catholyte import 8, catholyte outlet 7, and each cathode compartment has a catholyte circulating tube 10, ion-exchange membrane 4 between anolyte compartment 1 and the cathode compartment 3 is to be placed in the shaped as frame clamping plate, and with screw-clamped.In the utility model, anode and cathode arrangement mode are anode-barrier film-negative electrode-negative electrode-barrier film-anode-anode-barrier film-negative electrode-negative electrode-barrier film-anode), this arrangement mode be in electrode vessel, place two electrodes, be that membranous both sides have two negative electrodes and two anodes, this structure is a plurality of repeating units, its quantity can increase or reduce as required, in this arrangement, only establish an electrode in the cell body of two ends, be preferably anode.Above-mentioned electrode makes the cathode compartment intermediate space big near barrier film, so that in cathode compartment, establish agitator, there is one deck to be lighter than the organic liquid of water on the catholyte surface, topped as kerosene, whiteruss etc., also can adopt porous plastics topped, so not only avoided the divalent europium oxidation but also made electrolysis complete, to improve electrolytic efficiency, under the effect of anolyte circulating tube, catholyte circulating tube, and under the condition of pneumatic outlet extension tube attached, air-resistance phenomenon significantly reduces.
Among Fig. 3, expression anolyte import and pump 11 outlets are joined, another termination anolyte header tank 12 of pump, and the anolyte outlet connects Lower tank 13; Equally, the catholyte import connects pump 14 outlets, another termination catholyte header tank 15 of pump, and the catholyte outlet connects Lower tank 16,17 and is anode, and 18 is negative electrode, and 19 is stirring rake.
When present embodiment was used to operate, its anode material was that titanium is coated with iridium ruthenium plate or perforated plate, and the employing titanium mesh plate is a negative electrode, feed liquid Eu
3+Concentration is 0.5-0.8mol/L, feed acidity 0.5-0.8mol/L, and anolyte 1mol/LHCl, current density is 750A/m
2, its current efficiency is 95%, reduction ratio 96%.
The utility model advantage: this equipment makes up with a plurality of sulculuses, quick detachable, maintenance; Reduction under the organic liquid protection that is lighter than water avoids catholyte directly to contact with air, prevents the oxidation of divalent europium, and reduction efficiency is more than 90%; Because anolyte has gas to produce, so can stop gas stifled by means of pneumatic outlet; In the equipment between negative electrode and the negative electrode distance bigger, guarantee to stir and restoring operation, be suitable for industrialization.
Claims (4)
1; a kind of equipment of electrolytic reduction europium; it comprises cell body; negative electrode; anode; between negative electrode and anode, ion-exchange membrane is arranged; and be divided into anolyte compartment and anolyte compartment; it is characterized in that: described cell body is spacious groove; described anode is that titanium is coated with precious metal network; the arrangement mode of electrode is anode-barrier film-negative electrode-negative electrode-barrier film-anode-anode-barrier film-negative electrode-negative electrode-barrier film-anode; there are two negative electrodes and two anodes in wherein membranous both sides; this structure is a plurality of repeating units; one pneumatic outlet is arranged at the top, anolyte compartment, adorns agitator in the cathode compartment, and the organic liquid protective layer that is lighter than water is arranged on the liquid level; the anolyte circulating tube is arranged between the anolyte compartment; the catholyte circulating tube is arranged between the cathode compartment, an anolyte import is arranged in this equipment, the anolyte outlet; one catholyte import is arranged, the catholyte outlet.
2, the equipment of electrolytic reduction europium according to claim 1 is characterized in that: anolyte import and pump discharge join, and the anolyte outlet connects Lower tank; The catholyte import connects pump discharge, and the catholyte outlet connects Lower tank.
3, the equipment of electrolytic reduction europium according to claim 1 is characterized in that: the anolyte import is connected with header tank, under meter outlet, and the anolyte outlet connects Lower tank; The catholyte import connects header tank, under meter outlet, and the catholyte outlet connects Lower tank.
4, according to the equipment of claim 1 or 2 or 3 described electrolytic reduction europiums, it is characterized in that: the organic liquid that is lighter than water on the described cathode compartment liquid level is a kerosene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232964 CN2536601Y (en) | 2002-04-26 | 2002-04-26 | Apparatus for electrolytic reduction of europium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232964 CN2536601Y (en) | 2002-04-26 | 2002-04-26 | Apparatus for electrolytic reduction of europium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2536601Y true CN2536601Y (en) | 2003-02-19 |
Family
ID=33708219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02232964 Expired - Lifetime CN2536601Y (en) | 2002-04-26 | 2002-04-26 | Apparatus for electrolytic reduction of europium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2536601Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205575A (en) * | 2013-03-05 | 2013-07-17 | 广州有色金属研究院 | Method for recovering hydrochloric acid and rare earth from oxalate rare earth precipitation waste water |
-
2002
- 2002-04-26 CN CN 02232964 patent/CN2536601Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205575A (en) * | 2013-03-05 | 2013-07-17 | 广州有色金属研究院 | Method for recovering hydrochloric acid and rare earth from oxalate rare earth precipitation waste water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120426 Granted publication date: 20030219 |