CN202265610U - Anticorrosion electrolytic cell for nitrogen trifluoride - Google Patents
Anticorrosion electrolytic cell for nitrogen trifluoride Download PDFInfo
- Publication number
- CN202265610U CN202265610U CN 201120398182 CN201120398182U CN202265610U CN 202265610 U CN202265610 U CN 202265610U CN 201120398182 CN201120398182 CN 201120398182 CN 201120398182 U CN201120398182 U CN 201120398182U CN 202265610 U CN202265610 U CN 202265610U
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- China
- Prior art keywords
- cell body
- corrosion
- resistant
- nitrogen trifluoride
- anode
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses an anticorrosion electrolytic cell for nitrogen trifluoride, which comprises a cell body (2), a cell cover (1), a cathode (2), an anode (7), and an anode isolating skirt plate (4), wherein temperature control jackets (5 and 6) are arranged on the side wall and bottom of the cell body; the cell body is made of carbon steel and serves as the cathode; an insulating material is arranged between the cell cover and the cell body for isolation and sealing; and an anticorrosion insulating layer is arranged on the bottom part of the cell body. The electrolytic cell requires low manufacturing cost, achieves good mass and heat transfer effect, and is corrosion resistant, and the service life of the electrolytic cell is more than five times that of the carbon steel electrolytic cells of the same type.
Description
Technical field
The utility model relates to the nitrogen trifluoride preparation field, is that a kind of electrolytic process that is applicable to is produced the electrolyzer of gas of nitrogen trifluoride.
Background technology
Electrolytic process prepares nitrogen trifluoride (NF
3) electrolyzer process by carbon steel, stainless steel, nickel, copper or Monel metal usually; When using not corrosion resistant material such as carbon steel, stainless steel, copper etc.; The inner all positions that contacts with electrolytic solution or generation gas of electricity groove need to apply with corrosion-resisting resin, to avoid corrosion; When adopting corrosion resistant material such as Ni, Monel metal etc. to make, its manufacturing price is 5～6 times of carbon steel material electrolyzer, and equipment cost is high.
Patent JP6088267 disclose a kind of in inside all and electrolytic solution or generate position that gas contact all apply can be for a long time anti-the electrolyzer of (preferably anti-more than 260 ℃) pyritous fluoro-resin more than 140 ℃.Low like the fluoro-resin tolerable temperature, CF in the product then
4Content can increase.
ZL02201726.7 discloses a kind of electrolyzer, it is characterized in that scribbling the anticorrosive material layer on the outside surface of cell body internal surface and skirtboard.
Electricity groove internal coat corrosion resistant material, existence is strict to coating processes, coating material, shortcomings such as coating expense height.Bad like coating quality, coat in electric groove use, possibly occur and peel off and cause impurity CF in equipment corrosion, the water electrolytic gas
4Problems such as content increase, and after electric groove inside applies,, will influence the whole heat-transfer effect of cell body because of nonmetallic poor thermal conductivity.Therefore, how to solve the too fast problem of carbon steel electrolyzer corrosion, and to make the carbon steel electrolyzer effectively be applied to nitrogen trifluoride electrolysis industry be the difficult problem that this area faces.
The utility model content
The technical problem that the utility model will solve provides a kind of corrosion-resistant, heat-transfer effect good, cost is lower electrolyzer.
For solving the problems of the technologies described above; The utility model electrolyzer; Comprise cell body, groove lid, negative electrode, anode, anode and cathode isolation skirtboard, cell body sidewall and bottom are equipped with the temperature control chuck, and cell body is material with the carbon steel and does negative electrode; Adopt insulating material to carry out insulated enclosure between groove lid and the cell body, cell body is the erosion resisting insulation layer on the bottom.
Insulating material between electrolytic bath lid and the cell body can adopt a kind of in the materials such as tetrafluoroethylene, resol, corrosion-resistant Fluroplast-4 or rubber.Also available these insulated with material between cell body and external each pipeline.
Because cell body integral body is negative electrode, produce hydrogen and anodic gas mixed explosion for avoiding the cell body bottom, the utility model is laid one deck successive erosion resisting insulation layer in the cell body bottom.This erosion resisting insulation layer can be a kind of in tetrafluoroethylene, Vestolen PP 7052, Vilaterm, SE, resol, corrosion-resistant Fluroplast-4 or the fluoride salt etc.
The utility model electrolyzer is not established negative electrode in addition, directly adopts cell body to do negative electrode, makes the cell body current potential equal cathode potential, plays the provide protection to cell body.
Because the cell body inboard no longer applies impregnating material, the outside directly links to each other with the temperature control chuck, and the whole heat-conducting effect of electrolyzer is better; And cell body is directly done negative electrode, has cancelled negative electrode and has been provided with separately, and the cell body internal structure is simplified, and the electrolyte flow obstacle reduces, and electrolyzer internal heat transfer, mass transfer effect are better.
Anode and cathode is isolated skirtboard, because it is in the gas-liquid juncture area, is corroded easily, can adopt carbon steel material to add the corrosion-resistant finishes protection, also can directly connect corrosion resistant material manufacturings such as adopting nickel, Monel.
The utility model anode electrolytic cell plate can also be further designed to grating form, to reduce the inner resistance to mass transfer of electrolyzer.
The utility model electrolyzer directly adopts cell body to do negative electrode; And at cell body bottom increase one deck successive erosion resisting insulation layer; Solved the too fast problem of electrolyzer corrosion effectively; Prolonged the work-ing life and the low cost of manufacture of carbon steel electrolyzer, heat and mass is effective, helps improving electrolytic efficiency.This electrolyzer can reach similar carbon steel electrolyzer more than 5 times work-ing life.
Description of drawings
Fig. 1 is the sectional view of the utility model electrolyzer front view.
Fig. 2 is the sectional view of the utility model electrolyzer right view.
Fig. 3 is the utility model electrolyzer vertical view.
Embodiment
Be an embodiment of the utility model shown in Fig. 1～3, the specific embodiment of the utility model done to detail further below in conjunction with accompanying drawing: the nitrogen trifluoride electrolyzer, form by groove lid 1 and cell body (negative electrode) 2 two partss.Groove lid 1 is by anode 7, anodic gas outlet 12, cathode gas outlet 13, HF material hole 16, NH
3Material hole 17, negative electrode pressure taps 15, anode pressure taps 14, temperature-measuring port 18, anode extremely rod 9, negative electrode extremely rod 10, thief hole 19, anode and cathode are isolated skirtboard 4 and are formed.Between groove lid 1 and the cell body 2 through teflin ring 3 sealings, groove cover 1 with anode 7 between be connected through copper screw bolt 11, the cell body sidewall is connected with temperature control chuck 5,6 respectively with welding process with the bottom.Cell body is the carbon steel manufacturing, and one deck successive polyfluortetraethylene plate 8 is laid in the bottom, and the anode chamber and the cathode chamber is isolated skirtboard 4 with the preparation of nickel plate, and anode 7 is a grating form.
This electrolyzer is corrosion-resistant, heat-transfer effect good, cost is lower.
Claims (6)
1. a nitrogen trifluoride is with corrosion-resistant electrolysis groove; Comprise cell body, groove lid, negative electrode, anode, anode and cathode isolation skirtboard; It is characterized in that cell body sidewall and bottom are equipped with the temperature control chuck; Cell body is material with the carbon steel and does negative electrode, adopts insulating material to carry out insulated enclosure between groove lid and the cell body, and cell body is the erosion resisting insulation layer on the bottom.
2. nitrogen trifluoride according to claim 1 is with corrosion-resistant electrolysis groove, between groove lid and the cell body and the insulating material of cell body bottom be a kind of in tetrafluoroethylene, resol, corrosion-resistant Fluroplast-4 or the elastomeric material.
3. nitrogen trifluoride according to claim 2 is with corrosion-resistant electrolysis groove, and the erosion resisting insulation layer on the cell body bottom is a kind of in tetrafluoroethylene, Vestolen PP 7052, Vilaterm, SE, resol, corrosion-resistant Fluroplast-4 or the fluoride salt.
4. nitrogen trifluoride according to claim 3 is characterized in that with corrosion-resistant electrolysis groove positive plate is a grating form.
5. nitrogen trifluoride according to claim 4 is characterized in that with corrosion-resistant electrolysis groove it is the corrosion resistant material manufacturing that anode and cathode is isolated skirtboard.
6. nitrogen trifluoride according to claim 5 is characterized in that with corrosion-resistant electrolysis groove it is nickel or Monel made that anode and cathode is isolated skirtboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120398182 CN202265610U (en) | 2011-10-10 | 2011-10-10 | Anticorrosion electrolytic cell for nitrogen trifluoride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120398182 CN202265610U (en) | 2011-10-10 | 2011-10-10 | Anticorrosion electrolytic cell for nitrogen trifluoride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202265610U true CN202265610U (en) | 2012-06-06 |
Family
ID=46156417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120398182 Expired - Lifetime CN202265610U (en) | 2011-10-10 | 2011-10-10 | Anticorrosion electrolytic cell for nitrogen trifluoride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202265610U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383141A (en) * | 2011-10-10 | 2012-03-21 | 黎明化工研究院 | Anti-corrosion electrolytic tank for nitrogen trifluoride |
| CN104947135A (en) * | 2015-06-09 | 2015-09-30 | 中国船舶重工集团公司第七一八研究所 | Device for preparing nitrogen trifluoride and application |
-
2011
- 2011-10-10 CN CN 201120398182 patent/CN202265610U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383141A (en) * | 2011-10-10 | 2012-03-21 | 黎明化工研究院 | Anti-corrosion electrolytic tank for nitrogen trifluoride |
| CN102383141B (en) * | 2011-10-10 | 2014-06-18 | 黎明化工研究院 | Anti-corrosion electrolytic tank for nitrogen trifluoride |
| CN104947135A (en) * | 2015-06-09 | 2015-09-30 | 中国船舶重工集团公司第七一八研究所 | Device for preparing nitrogen trifluoride and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LIMING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO. Free format text: FORMER NAME: LIMING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 471000 Wangcheng Avenue, Henan, Luoyang, No. 69 Patentee after: Liming Research Institute of Chemical Industry Co.,Ltd. Address before: 471000 Wangcheng Avenue, Henan, Luoyang, No. 69 Patentee before: Liming Chemical Inst. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120606 Effective date of abandoning: 20140618 |
|
| RGAV | Abandon patent right to avoid regrant |