CN203112506U - Device for preparing high-purity nitrogen trifluoride by rectifying, adsorbing and purifying nitrogen trifluoride - Google Patents
Device for preparing high-purity nitrogen trifluoride by rectifying, adsorbing and purifying nitrogen trifluoride Download PDFInfo
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- CN203112506U CN203112506U CN 201220746442 CN201220746442U CN203112506U CN 203112506 U CN203112506 U CN 203112506U CN 201220746442 CN201220746442 CN 201220746442 CN 201220746442 U CN201220746442 U CN 201220746442U CN 203112506 U CN203112506 U CN 203112506U
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- nitrogen trifluoride
- rectifying
- purity nitrogen
- adsorbing
- purity
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Abstract
The utility model relates to a device for preparing high-purity nitrogen trifluoride by rectifying, adsorbing and purifying nitrogen trifluoride. The utility model provides a device for preparing high-purity nitrogen trifluoride by rectifying, adsorbing and purifying nitrogen trifluoride aiming at the problems that the existing device for preparing the nitrogen trifluoride has defects in structure, and the impurity in crude nitrogen trifluoride cannot be well removed to obtain high-purity nitrogen trifluoride, and the requirements of production cannot be met. The device for preparing high-purity nitrogen trifluoride by rectifying, adsorbing and purifying nitrogen trifluoride provided by the utility model is composed of a glass bottle (1), a water catcher (2), a sodium peroxide filling tower (3), a sodium thiosulfate solution bottle (4), an oxygen-in-air catcher (5) and a nitrogen trifluoride catcher (6), which are integrally connected through a connecting pipeline orderly. The device not only is reasonable in structure, and simple to operate, but also can prepare the high-purity nitrogen trifluoride, and is an ideal device for preparing the high-purity nitrogen trifluoride.
Description
Technical field
The utility model relates to a kind of device for preparing nitrogen trifluoride, particularly a kind of rectifying and adsorbs the device that the purification nitrogen trifluoride prepares high-purity nitrogen trifluoride.
Background technology
A kind of important chemical material of nitrogen trifluoride, but at present, mainly contain impurity such as nitrogen, oxygen, carbon monoxide, carbonic acid gas, Nitrous Oxide, difluoro hydrazine, tetrafluorohydrazine, tetrafluoro-methane, sulfur hexafluoride, silicon tetrafluoride, fluorine gas, hydrogen fluoride, water in the resulting thick nitrogen trifluoride of electrolysis, and the device of existing preparation nitrogen trifluoride is because some defectives structurally, can not remove these impurity well and obtain highly purified nitrogen trifluoride, can't satisfy the demand of production.
Summary of the invention
Technical problem to be solved in the utility model is: the device of existing preparation nitrogen trifluoride is because some defectives structurally, and the impurity that can not remove well in the thick nitrogen trifluoride obtains highly purified nitrogen trifluoride, can't satisfy the demand of production.
The utility model solves scheme that its technical problem takes and provides the device that a kind of rectifying and absorption purification nitrogen trifluoride prepare high-purity nitrogen trifluoride, connects one by connection line successively in order by oxygen trap 5 and nitrogen trifluoride trap 6 in vial 1, water trap 2, sodium peroxide packed tower 3, hypo solution bottle 4, the air and constitutes.
It is reasonable in design, simple in structure, easy to use that a kind of rectifying of the utility model and absorption purification nitrogen trifluoride prepare the device of high-purity nitrogen trifluoride, can prepare highly purified hydrogenchloride, is a kind of device of desirable preparation nitrogen trifluoride.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 prepares the apparatus structure synoptic diagram of high-purity nitrogen trifluoride for rectifying and absorption purification nitrogen trifluoride;
Accompanying drawing number is: 1. vial, 2. water trap, 3. sodium peroxide packed tower, 4. hypo solution bottle, 5. oxygen trap in the air, 6. nitrogen trifluoride trap.
Embodiment
The utility model solves scheme that its technical problem takes and provides the device that a kind of rectifying and absorption purification nitrogen trifluoride prepare high-purity nitrogen trifluoride as shown in Figure 1, connects one by connection line successively in order by oxygen trap 5 and nitrogen trifluoride trap 6 in vial 1, water trap 2, sodium peroxide packed tower 3, hypo solution bottle 4, the air and constitutes.
Usually in the thick nitrogen trifluoride of the resulting anodic gas of electrolysis, mainly contain impurity such as nitrogen, oxygen, carbon monoxide, carbonic acid gas, Nitrous Oxide, difluoro hydrazine, tetrafluorohydrazine, tetrafluoro-methane, sulfur hexafluoride, silicon tetrafluoride, fluorine gas, hydrogen fluoride, water, in order to remove these impurity, with anodic gas by be cooled to-78 ℃ copper trap with methyl alcohol-dry ice, again by being heated to 100 ℃ Sodium Fluoride pipe to remove hydrogen fluoride.Oxygen is used charcoal absorption at low temperatures.Thick nitrogen trifluoride packed into preserve with the water displacement in the 20L vial 1.Placing the diel Nitrous Oxide like this, on the water just is down to below 1%.In order further to remove Nitrous Oxide, after mixed gas can being reacted by sodium peroxide packed tower 3, hypo solution bottle 4, collect with in the oxygen trap 5 in the air of liquid nitrogen or liquefied air cooling, be purified to till the absorption band that in infrared absorption light, can not see Nitrous Oxide, add liquid nitrogen with the sherwood oil in the nitrogen trifluoride trap 6 again and be cooled to-160 to-150 ℃, carry out low-temperature distillation 3-5 time, can obtain the nitrogen trifluoride of purifying.
Carbon tetrafluoride foreign matter in the gas of nitrogen trifluoride of producing can be reduced to 5 * 10 from 1.5%-2%
-6Below, and solved problem of environmental pollution.
This device is not only rational in infrastructure, simple to operate, and can prepare highly purified hydrogenchloride, is a kind of device of the desirable high-purity nitrogen trifluoride of preparation.
Claims (1)
1. a rectifying and absorption purification nitrogen trifluoride prepare the device of high-purity nitrogen trifluoride, it is characterized in that: connect one by connection line successively in order by oxygen trap (5) and nitrogen trifluoride trap (6) in vial (1), water trap (2), sodium peroxide packed tower (3), hypo solution bottle (4), the air and constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220746442 CN203112506U (en) | 2012-12-31 | 2012-12-31 | Device for preparing high-purity nitrogen trifluoride by rectifying, adsorbing and purifying nitrogen trifluoride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220746442 CN203112506U (en) | 2012-12-31 | 2012-12-31 | Device for preparing high-purity nitrogen trifluoride by rectifying, adsorbing and purifying nitrogen trifluoride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203112506U true CN203112506U (en) | 2013-08-07 |
Family
ID=48892875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220746442 Expired - Fee Related CN203112506U (en) | 2012-12-31 | 2012-12-31 | Device for preparing high-purity nitrogen trifluoride by rectifying, adsorbing and purifying nitrogen trifluoride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203112506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116254547A (en) * | 2022-12-30 | 2023-06-13 | 福建德尔科技股份有限公司 | Preparation method of nitrogen trifluoride |
-
2012
- 2012-12-31 CN CN 201220746442 patent/CN203112506U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116254547A (en) * | 2022-12-30 | 2023-06-13 | 福建德尔科技股份有限公司 | Preparation method of nitrogen trifluoride |
| CN116254547B (en) * | 2022-12-30 | 2023-09-08 | 福建德尔科技股份有限公司 | Preparation method of nitrogen trifluoride |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |