CN201942755U - Ion film electroplating bath device for making alkaline by using oxygen cathode - Google Patents
Ion film electroplating bath device for making alkaline by using oxygen cathode Download PDFInfo
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- CN201942755U CN201942755U CN201020699577.3U CN201020699577U CN201942755U CN 201942755 U CN201942755 U CN 201942755U CN 201020699577 U CN201020699577 U CN 201020699577U CN 201942755 U CN201942755 U CN 201942755U
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- catholyte
- cathode
- oxygen cathode
- oxygen
- membrane
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Abstract
The utility model relates to an ion film electroplating bath device for making alkaline by using an oxygen cathode, mainly comprising an anode of an ion film electroplating bath and a cathode of the ion film electroplating bath, wherein a cathode gas chamber and a cathode liquid chamber are arranged at one side of the cathode of the ion film electroplating bath; and an oxygen cathode diffusion electrode (17) is arranged between the cathode gas chamber and the cathode liquid chamber and consists of a waterproof layer (24), a catalytic layer (25) and a conducting net (26) in sequence. In the ion film electroplating bath device, due to chemical reaction of 2H20+1/2O2+2e=2OH- at the cathode, the decomposition voltage is reduced by 1.22V, and due to standard potential estimation, the power can be saved by more than 56%.
Description
Technical field
The utility model relates to a kind of system alkali device, especially relates to a kind of use oxygen cathode system basic ion membrane electrolyser device.
Background technology
Chlorine industry is produced caustic soda and chlorine by electrolytic saltwater, and by-product hydrogen is the basic chemical industry primary industry that occupies critical role in national economy simultaneously.Present domestic system alkali has diaphragm process and ionic membrane method, and power consumption cost accounts for 60% in the production cost, says in a sense, and reducing power consumption is the deciding factor that improves the chlor-alkali industry economic benefit.
Specifically, chlor-alkali plant is produced 1 ton of caustic soda, and the hydrogen of 0.886 ton of chlorine of by-product and more than 1200 cubic metre need consume 2500 electric degrees approximately, is the electricity-eating tiger in the chemical industry, and will eat up 20% of chemical industry electricity consumption every year.For many years, people once by improving barrier film, improved electric groove structure, transform graphite anode as metal anode.Adopt the quadruple effect evaporation technology, and improve approach such as production management level and make total energy consumption descend 30%.But fundamentally, the huge current consumption of chlorine industry is determined by its chemical reaction itself.This just tells us will realize the energy-conservation significantly of chlorine industry, must change its electrochemical reaction, thereby reduce its theoretical decomposition voltage, reaches purpose of saving.As everyone knows, the main electrochemical reaction of chlor-alkali production is at present:
2NaCl+2H
2O＝2NaOH+H
2↑+Cl
2↑
At anode: 2Cl
--2e=Cl
2Φ ° of Cl
2/ Cl
-=1.359 volts
At negative electrode: 2H
2O+2e=H
2↑+2OH
-Φ ° of H
2O/OH
-=-0.828 volt
So, its theoretical decomposition voltage: E °=Φ ° sun-Φ ° the moon
E °=1.359 volts-(0.828 volt)=2.187 volts
If the total reaction of electrode process is changed into:
2NaCl+H
2O+1/2O
2＝2NaOH+Cl
2↑
At anode: 2Cl
--2e=Cl
2↑ Φ ° of Cl
2/ Cl
-=1.359 volts
At negative electrode: 2H
2O+1/2O
2+ 2e=2OH
-Φ ° of H
2O/OH
-=0.391 volt
So, its theoretical decomposition voltage: V=Φ ° sun-Φ ° the moon
-0.391 volt=0.968 volt of V=1.359 volt
Find out that from above-mentioned two kinds of electrode processes their anodic process does not become, negative electrode is decomposed into hydrogen and hydroxide radical by original water under the electric energy effect, changes into water and airborne oxygen effect and generates hydroxide radical, makes it no longer produce hydrogen.Obviously, improved electrode process has only just reduced by 1.22 volts by one of theoretical decomposition voltage.By the standard potential estimation, can economize on electricity 56%.
But, also do not have to occur the good oxygen cathode system alkali electrolytic cell assembly that above-mentioned theory is directly applied to actual production in the prior art.
The utility model content
The utility model has designed a kind of oxygen cathode system basic ion membrane electrolyser device, and the technical problem of its solution is: it is excessive that (1) domestic system alkali has diaphragm process and ionic membrane method to expend power supply, do not meet the requirement of current low-carbon environment-friendly; (2) the special composite structure of the oxygen cathode of oxygen cathode system alkali electrolytic cell assembly causes it can not weld when mounted, the problem that sealing difficulty is big.
In order to solve the technical problem of above-mentioned existence, the utility model has adopted following scheme:
A kind of oxygen cathode system basic ion membrane electrolyser device, mainly comprise the anode of ion-exchange membrane electrolyzer and the negative electrode of ion-exchange membrane electrolyzer, negative electrode one side at described ion-exchange membrane electrolyzer is provided with cathode air chamber (7) and catholyte compartment (2), be provided with oxygen cathode diffusion electrode (17) between described cathode air chamber and the described catholyte compartment, described oxygen cathode diffusion electrode (17) is successively by waterproof layer (24), and Catalytic Layer (25) and conductive mesh (26) are formed; To described cathode air chamber (7) delivering oxygen, described oxygen acts on down and H by described oxygen cathode diffusion electrode (17)
2O changes OH together into
-Enter described catholyte compartment (2), thereby generate NaOH at described catholyte compartment (2), the negative electrode at described ion-exchange membrane electrolyzer does not have H simultaneously
2Separate out.
Further, described catholyte compartment (2) mainly constitutes by oxygen cathode diffusion electrode (17) and ionic membrane (8), and described oxygen cathode diffusion electrode (17) and ionic membrane (8) two ends are connected and sealed by pad is set respectively.
Further, described pad comprises shim (5) and hassock sheet (6); All be provided with the through hole that enters for catholyte on described shim (5) and the described hassock sheet (6); Be provided with step on described hassock sheet (6), described shim (5) is arranged in described step; The two ends of described oxygen cathode diffusion electrode (17) are arranged at respectively between described shim (5) and the described hassock sheet (6).
Further, lower frame (1) is provided with catholyte inlet (20) and upper side frame (3) is provided with catholyte outlet (23), and catholyte passes in and out described catholyte compartment (2) by the subassembly that described catholyte enters the mouth (20), described catholyte exports (23) and described shim (5) and hassock sheet (6).
Further, be provided with the square tube that enters for catholyte in the described lower frame (1); Be provided with in the described upper side frame (3) for the effusive square tube of catholyte.
Further, described oxygen cathode diffusion electrode (17) on described upper side frame (3) and described lower frame (1), and relies on monolithic extruded power by adhesive securement, forms the described cathode air chamber (7) of sealing.
Further, described cathode air chamber (7) is provided with inlet pipe (55) and venting port (52); Oxygen enters described cathode air chamber (7) from described inlet pipe (55), falls part oxygen through reaction consumes, and residual gas is discharged from described venting port (52).
This oxygen cathode system basic ion membrane electrolyser device is compared with tradition system alkali device, has following beneficial effect:
(1) negative electrode of the system alkali device in the utility model is owing to exist 2H
2O+1/2O
2+ 2e=2OH
-Chemical reaction, thereby make decomposition voltage just reduce by 1.22 volts, by the standard potential estimation, can economize on electricity more than 56%.
(2) the utility model is owing to be connected and sealed oxygen cathode diffusion electrode and ionic membrane two ends respectively by pad is set, overcome the unweldable when mounted defective of oxygen cathode special composite structure, can directly rely on simple contact seal mode to seal.
Description of drawings
Fig. 1 is the structural representation of the utility model oxygen cathode system basic ion membrane electrolyser device;
Fig. 2 is the section of structure of oxygen cathode diffusion electrode in the utility model;
Fig. 3 is the side sectional view of the utility model oxygen cathode system basic ion membrane electrolyser device;
Fig. 4 is the vertical view cutaway drawing of the utility model oxygen cathode system basic ion membrane electrolyser device;
Fig. 5 is the catholyte recycle system synoptic diagram of the utility model oxygen cathode system basic ion membrane electrolyser device.
Description of reference numerals:
The 1-lower frame; 17-oxygen cathode diffusion electrode; The 2-catholyte compartment; 20-catholyte inlet; The outlet of 23-catholyte; The 24-waterproof layer; The 25-Catalytic Layer; The 26-conductive mesh; The 3-upper side frame; The 4-left frame; The 5-shim; The 52-venting port; The 55-inlet pipe; 6-hassock sheet; The 7-cathode air chamber; The 8-ionic membrane.
Embodiment
Below in conjunction with Fig. 1 to Fig. 5, the utility model is described further:
A kind of oxygen cathode system basic ion membrane electrolyser device, mainly comprise the anode of ion-exchange membrane electrolyzer and the negative electrode of ion-exchange membrane electrolyzer, negative electrode one side at ion-exchange membrane electrolyzer is provided with cathode air chamber 7 and catholyte compartment 2, is provided with oxygen cathode diffusion electrode 17 between cathode air chamber and the catholyte compartment; To cathode air chamber 7 delivering oxygens, oxygen acts on down and H by oxygen cathode diffusion electrode 17
2O changes OH together into
-Enter described catholyte compartment 2, thereby generate NaOH at catholyte compartment 2, the negative electrode at described ion-exchange membrane electrolyzer does not have H2 to separate out simultaneously.Thereby make decomposition voltage just reduce by 1.22 volts, by the standard potential estimation, can economize on electricity more than 56%.
As shown in Figure 1, lower frame 1 is provided with catholyte inlet 22 and upper side frame 3 is provided with catholyte outlet 23, and catholyte is by the subassembly turnover catholyte compartment 2 of catholyte inlet 22, the outlet 23 of described catholyte and shim 5 and hassock sheet 6.Be provided with the square tube that enters for catholyte in the lower frame 1; Be provided with in the upper side frame 3 for the effusive square tube of catholyte.Cathode air chamber 7 is provided with inlet pipe 55 and venting port 52; Oxygen enters cathode air chamber 7 from inlet pipe 55, falls part oxygen through reaction consumes, and residual gas is discharged from venting port 52.
As shown in Figure 2, the oxygen cathode diffusion electrode 17 between cathode air chamber 7 and the catholyte compartment 2 is successively by waterproof layer 24, and Catalytic Layer 25 and conductive mesh 26 are formed.
As shown in Figure 3 and Figure 4, catholyte compartment 2 is main by oxygen cathode diffusion electrode 17 and ionic membrane 8 formations, and oxygen cathode diffusion electrode 17 and ionic membrane 8 two ends are connected and sealed by pad is set respectively.Specifically, pad comprises shim 5 and hassock sheet 6; All be provided with the through hole that enters for catholyte on shim 5 and the hassock sheet 6; Be provided with step on hassock sheet 6, shim 5 is arranged in step; The two ends of oxygen cathode diffusion electrode 17 are arranged at respectively between shim 5 and the described hassock sheet 6.
As shown in Figure 5, oxygen cathode diffusion electrode 17 is by adhesive securement on top on frame 3 and the lower frame 1, and relies on monolithic extruded power, forms the described cathode air chamber 7 of sealing.
This oxygen cathode system basic ion membrane electrolyser device principle of work is as follows: this reaction comprises two circuits of gas-liquid:
1, oxygen enters cathode air chamber 7 from inlet pipe 55, falls part oxygen through reaction consumes, and residual gas is got rid of from venting port 52;
2, sodium hydroxide solution is from flow through square tube the lower frame 1 of catholyte inlet 20, enter airtight catholyte compartment 2 by the through hole on shim 5 and the hassock sheet 6 again, through after the electrochemical reaction, the sodium hydroxide solution of high density flows into the square tube in the upper side frame 3, and enters next system from catholyte outlet 23 outflow electrolyzers.
3, oxygen passes through under the effect of oxygen cathode diffusion electrode and H
2O changes OH-together into and enters catholyte compartment, thereby generates NaOH solution at catholyte compartment, and the negative electrode at ion-exchange membrane electrolyzer does not have H simultaneously
2Separate out.
The total reaction of this electrode process is changed into:
2NaCl+H
2O+1/2O
2＝2NaOH+Cl
2↑
At anode: 2Cl
--2e=Cl
2↑ Φ ° of Cl
2/ Cl
-=1.359 volts
At negative electrode: 2H
2O+1/2O
2+ 2e=2OH
-Φ ° of H
2O/OH
-=0.391 volt
So, its theoretical decomposition voltage: V=Φ ° sun-Φ ° the moon
-0.391 volt=0.968 volt of V=1.359 volt
Therefore, only 1.22 volts have just been reduced by one of theoretical decomposition voltage.By the standard potential estimation, can economize on electricity 56%.
This oxygen cathode system basic ion membrane electrolyser device is compared with tradition system alkali device, has following beneficial effect:
(1) negative electrode of the system alkali device in the utility model is owing to exist 2H
2O+1/2O
2+ 2e=2OH
-Chemical reaction, thereby make decomposition voltage just reduce by 1.22 volts, by the standard potential estimation, can economize on electricity more than 56%.
(2) the utility model is owing to be connected and sealed oxygen cathode diffusion electrode and ionic membrane two ends respectively by pad is set, overcome the unweldable when mounted defective of oxygen cathode special composite structure, can directly rely on simple contact seal mode to seal.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obvious realization of the present utility model is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all in protection domain of the present utility model.
Claims (7)
1. oxygen cathode system basic ion membrane electrolyser device, mainly comprise the anode of ion-exchange membrane electrolyzer and the negative electrode of ion-exchange membrane electrolyzer, it is characterized in that: negative electrode one side at described ion-exchange membrane electrolyzer is provided with cathode air chamber (7) and catholyte compartment (2), be provided with oxygen cathode diffusion electrode (17) between described cathode air chamber and the described catholyte compartment, described oxygen cathode diffusion electrode (17) is successively by waterproof layer (24), and Catalytic Layer (25) and conductive mesh (26) are formed.
2. according to the described oxygen cathode system basic ion of claim 1 membrane electrolyser device, it is characterized in that: described catholyte compartment (2) mainly constitutes by oxygen cathode diffusion electrode (17) and ionic membrane (8), and described oxygen cathode diffusion electrode (17) and ionic membrane (8) two ends are connected and sealed by pad is set respectively.
3. according to the described oxygen cathode system basic ion of claim 2 membrane electrolyser device, it is characterized in that: described pad comprises shim (5) and hassock sheet (6); All be provided with the through hole that enters for catholyte on described shim (5) and the described hassock sheet (6); Be provided with step on described hassock sheet (6), described shim (5) is arranged in described step; The two ends of described oxygen cathode diffusion electrode (17) are arranged at respectively between described shim (5) and the described hassock sheet (6).
4. according to the described oxygen cathode system basic ion of claim 3 membrane electrolyser device, it is characterized in that: lower frame (1) is provided with catholyte inlet (20) and upper side frame (3) is provided with catholyte outlet (23), and catholyte passes in and out described catholyte compartment (2) by the subassembly that described catholyte enters the mouth (20), described catholyte exports (23) and described shim (5) and hassock sheet (6).
5. according to the described oxygen cathode system basic ion of claim 4 membrane electrolyser device, it is characterized in that: be provided with the square tube that enters for catholyte in the described lower frame (1); Be provided with in the described upper side frame (3) for the effusive square tube of catholyte.
6. according to any one described oxygen cathode system basic ion membrane electrolyser device in the claim 1 to 5, it is characterized in that: described oxygen cathode diffusion electrode (17) is gone up the described cathode air chamber (7) that forms sealing by adhesive securement at described upper side frame (3) and described lower frame (1).
7. according to the described oxygen cathode system basic ion of claim 6 membrane electrolyser device, it is characterized in that: described cathode air chamber (7) is provided with inlet pipe (55) and venting port (52); Oxygen enters described cathode air chamber (7) from described inlet pipe (55), falls part oxygen through reaction consumes, and residual gas is discharged from described venting port (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020699577.3U CN201942755U (en) | 2010-12-29 | 2010-12-29 | Ion film electroplating bath device for making alkaline by using oxygen cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020699577.3U CN201942755U (en) | 2010-12-29 | 2010-12-29 | Ion film electroplating bath device for making alkaline by using oxygen cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201942755U true CN201942755U (en) | 2011-08-24 |
Family
ID=44470103
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020699577.3U Expired - Lifetime CN201942755U (en) | 2010-12-29 | 2010-12-29 | Ion film electroplating bath device for making alkaline by using oxygen cathode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201942755U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031534A (en) * | 2010-12-29 | 2011-04-27 | 蓝星(北京)化工机械有限公司 | Ionic membrane electrolytic bath device for preparing alkali through oxygen cathode |
| CN102337558A (en) * | 2011-11-03 | 2012-02-01 | 北京化工大学 | Method for installing and sealing oxygen diffusion electrode of ionic membrane electrolytic cell |
| CN103014748A (en) * | 2012-12-25 | 2013-04-03 | 北京化工大学 | Near zero polar distance oxygen cathode ionic membrane electrolytic device and application thereof |
| CN113818036A (en) * | 2021-11-05 | 2021-12-21 | 天津工业大学 | Universal electrolytic tank for electrolysis |
-
2010
- 2010-12-29 CN CN201020699577.3U patent/CN201942755U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031534A (en) * | 2010-12-29 | 2011-04-27 | 蓝星(北京)化工机械有限公司 | Ionic membrane electrolytic bath device for preparing alkali through oxygen cathode |
| CN102031534B (en) * | 2010-12-29 | 2013-04-10 | 蓝星(北京)化工机械有限公司 | Ionic membrane electrolytic bath device for preparing alkali through oxygen cathode |
| CN102337558A (en) * | 2011-11-03 | 2012-02-01 | 北京化工大学 | Method for installing and sealing oxygen diffusion electrode of ionic membrane electrolytic cell |
| CN103014748A (en) * | 2012-12-25 | 2013-04-03 | 北京化工大学 | Near zero polar distance oxygen cathode ionic membrane electrolytic device and application thereof |
| CN103014748B (en) * | 2012-12-25 | 2015-12-23 | 北京化工大学 | Nearly zero pole span oxygen cathode ion membrane electrolysis device and application thereof |
| CN113818036A (en) * | 2021-11-05 | 2021-12-21 | 天津工业大学 | Universal electrolytic tank for electrolysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20130410 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20130410 |
|
| RGAV | Abandon patent right to avoid regrant |