CN202558628U - Sulfur hexafluoride purifying device capable of refrigerating by liquid nitrogen - Google Patents
Sulfur hexafluoride purifying device capable of refrigerating by liquid nitrogen Download PDFInfo
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- CN202558628U CN202558628U CN2012202028135U CN201220202813U CN202558628U CN 202558628 U CN202558628 U CN 202558628U CN 2012202028135 U CN2012202028135 U CN 2012202028135U CN 201220202813 U CN201220202813 U CN 201220202813U CN 202558628 U CN202558628 U CN 202558628U
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- liquid nitrogen
- sulfur hexafluoride
- refrigerating
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Abstract
The utility model discloses a sulfur hexafluoride purifying device capable of refrigerating by liquid nitrogen. The sulfur hexafluoride purifying device comprises a reaction kettle, a rectifying tower, a first-stage trap, a second-stage trap, a liquid nitrogen storage device and a refrigerating device, wherein a liquid nitrogen outlet of the liquid nitrogen storage device and a refrigerating agent inlet of the refrigerating device are communicated with each other, the refrigerating device comprises a first cooling medium outlet and a second cooling medium outlet, the first cooling medium outlet is communicated with a cooling medium inlet of the first-stage trap, and the second cooling medium outlet is communicated with a cooling medium inlet of the second-stage trap. According to the sulfur hexafluoride purifying device disclosed by the utility model, the rectifying tower can easily reach a rectifying temperature of -70 to 80 DEG C by the liquid nitrogen so as to be capable of completely removing air in the sulfur hexafluoride; nitrogen gas discharged from the rectifying tower is induced into the refrigerating device to cool down a refrigerating agent of the refrigerating device so as to be capable of removing low-fluorine matters in sulfur hexafluoride; and the sulfur hexafluoride purifying device disclosed by the utility model is capable of refrigerating by the liquid nitrogen, is suitable for purifying the sulfur hexafluoride, fully utilizes the cold quantity of the liquid nitrogen, and is environment-friendly in production.
Description
Technical field
The utility model relates to a kind of sulfur hexafluoride purifying plant, particularly a kind of sulfur hexafluoride purifying plant that adopts liquid nitrogen refrigerating.
Background technology
At present; The cold of chemical industry, some reaction needed of pharmaceutical industry is provided by industrial refrigerating apparatus usually; But because the refrigeration agent of industrial refrigerating apparatus is fluorine Lyons mostly; Not enough environmental protection, and industrial refrigerating apparatus to reach refrigeration temperature limited, can not satisfy the needs of some production (purifying) like sulfur hexafluoride.
The fluorine that is normally produced by the hydrogen fluoride electrolysis of sulfur hexafluoride comes synthetic with reaction of Salmon-Saxl in high temperature; Except that sulfur hexafluoride, also generate sub products such as a spot of sulfur tetrafluoride in the product.
General condensation, the rectification method of adopting removed the impurity such as low fluorine material and air in the sulfur hexafluoride in the prior art.Its main flow process comprises through rectifying removes air in-70-80 ℃ TR, again through the two-stage trap, respectively-30-40 ℃ with-10-0 ℃ temperature under remove subfluoride.
Because industrial refrigerating apparatus will reach-the temperature difficulty of 70-80 ℃ is bigger, so it is not suitable for the rectification and purification of sulfur hexafluoride.
The utility model content
In view of this; The purpose of the utility model provides a kind of sulfur hexafluoride purifying plant that adopts liquid nitrogen refrigerating; It can easier make rectifying tower reach-70-80 ℃ rectification temperature, is applicable to the purification of sulfur hexafluoride, and can the gas nitrogen that come out from rectifying tower further be utilized; The cryogenic energy utilization rate is high, and the production environmental protection.
The utility model adopts the sulfur hexafluoride purifying plant of liquid nitrogen refrigerating; Comprise reaction kettle, rectifying tower and two-stage trap; Also comprise liquid nitrogen storing unit and refrigeration plant; The liquid nitrogen outlet of said liquid nitrogen storing unit and the refrigerant inlet of refrigeration plant are communicated with; Said refrigeration plant comprises outlet of first heat-eliminating medium and the outlet of second heat-eliminating medium, and the heat-eliminating medium inlet of the first step trap of outlet of first heat-eliminating medium and two-stage trap is communicated with, and the heat-eliminating medium inlet of second trap of outlet of second heat-eliminating medium and two-stage trap is communicated with.
Further, the outlet of the liquid nitrogen of said liquid nitrogen storing unit also is communicated with through the refrigerant inlet of pipeline and refrigeration plant.
The beneficial effect of the utility model: the utility model adopts the sulfur hexafluoride purifying plant of liquid nitrogen refrigerating, through liquid nitrogen rectifying tower is reached-rectification temperature of 70-80 ℃, thereby can remove the air that contains in the sulfur hexafluoride completely; The gas nitrogen that comes out from rectifying tower is introduced into refrigeration plant the refrigeration agent of refrigeration plant is cooled off; The refrigeration agent of refrigeration plant is reached respectively-30-40 ℃ with-10-0 ℃;-30-40 ℃ refrigeration agent is fed the refrigeration plant feeding second stage trap of first step trap, general-10-0 ℃, can remove the low fluorine material that contains in the sulfur hexafluoride; This purifying plant adopts liquid nitrogen refrigerating, is applicable to that the purification of sulfur hexafluoride and liquid nitrogen cryogenic energy utilization are abundant, the production environmental protection.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Fig. 1 adopts the structural representation of the sulfur hexafluoride purifying plant of liquid nitrogen refrigerating for the utility model.
Embodiment
Fig. 1 adopts the structural representation of the sulfur hexafluoride purifying plant of liquid nitrogen refrigerating for the utility model.
As shown in the figure; Present embodiment adopts the sulfur hexafluoride purifying plant of liquid nitrogen refrigerating; Comprise reaction kettle 1, rectifying tower 2 and two-stage trap; Also comprise liquid nitrogen storing unit 3 and refrigeration plant 4, the liquid nitrogen outlet of said liquid nitrogen storing unit 3 and the refrigerant inlet of refrigeration plant 4 are communicated with, and said refrigeration plant 3 comprises outlet of first heat-eliminating medium and the outlet of second heat-eliminating medium; The heat-eliminating medium inlet of the first step trap 5 of outlet of first heat-eliminating medium and two-stage trap is communicated with, and the heat-eliminating medium inlet of second trap 6 of outlet of second heat-eliminating medium and two-stage trap is communicated with.
The utility model adopts the sulfur hexafluoride purifying plant of liquid nitrogen refrigerating; Through liquid nitrogen rectifying tower is reached-rectification temperature of 70-80 ℃; Thereby sulfur hexafluoride and low fluorine material become liquid state and air separation, can remove the air that contains in the sulfur hexafluoride completely through rectifying; The gas nitrogen that comes out from rectifying tower is introduced into refrigeration plant the refrigeration agent of refrigeration plant is cooled off; The refrigeration agent of refrigeration plant is reached respectively-30-40 ℃ with-10-0 ℃;-30-40 ℃ refrigeration agent is fed the refrigeration plant feeding second stage trap of first step trap, general-10-0 ℃; Separate with the low fluorine material of gasiform through the sulfur hexafluoride of trap, thereby can remove the low fluorine material that contains in the sulfur hexafluoride liquid state; This purifying plant adopts liquid nitrogen refrigerating, is applicable to the purification of sulfur hexafluoride, and is introduced into refrigeration plant from the gas nitrogen that rectifying tower comes out that gas nitrogen cold is fully utilized, the production environmental protection.
As improvement to this embodiment; The liquid nitrogen outlet of said liquid nitrogen storing unit 3 also is communicated with through the refrigerant inlet of pipeline and refrigeration plant 4; Owing to only utilize the cold of gas nitrogen can't make the refrigeration agent of refrigeration plant obtain enough colds, so this structure can directly utilize liquid nitrogen to refrigeration plant cold to be provided; Certainly in different embodiments, the refrigeration plant alternate manner replenishes cold.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (2)
1. sulfur hexafluoride purifying plant that adopts liquid nitrogen refrigerating; Comprise reaction kettle, rectifying tower and two-stage trap; It is characterized in that: also comprise liquid nitrogen storing unit and refrigeration plant; The liquid nitrogen outlet of said liquid nitrogen storing unit and the refrigerant inlet of refrigeration plant are communicated with; Said refrigeration plant comprises outlet of first heat-eliminating medium and the outlet of second heat-eliminating medium, and the heat-eliminating medium inlet of the first step trap of outlet of first heat-eliminating medium and two-stage trap is communicated with, and the heat-eliminating medium inlet of second trap of outlet of second heat-eliminating medium and two-stage trap is communicated with.
2. the sulfur hexafluoride purifying plant of employing liquid nitrogen refrigerating according to claim 1 is characterized in that: the liquid nitrogen outlet of said liquid nitrogen storing unit also is communicated with through the refrigerant inlet of pipeline and refrigeration plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202028135U CN202558628U (en) | 2012-05-08 | 2012-05-08 | Sulfur hexafluoride purifying device capable of refrigerating by liquid nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202028135U CN202558628U (en) | 2012-05-08 | 2012-05-08 | Sulfur hexafluoride purifying device capable of refrigerating by liquid nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202558628U true CN202558628U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012202028135U Expired - Lifetime CN202558628U (en) | 2012-05-08 | 2012-05-08 | Sulfur hexafluoride purifying device capable of refrigerating by liquid nitrogen |
Country Status (1)
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| CN (1) | CN202558628U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776216A (en) * | 2014-01-13 | 2014-05-07 | 浙江海天气体有限公司 | Nitrogen supply device utilizing liquid nitrogen cooling capacity |
| CN112483884A (en) * | 2020-12-21 | 2021-03-12 | 南通虹登机械设备有限公司 | Liquid gas storage device for improving inflation purity of SF6 gas station |
-
2012
- 2012-05-08 CN CN2012202028135U patent/CN202558628U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776216A (en) * | 2014-01-13 | 2014-05-07 | 浙江海天气体有限公司 | Nitrogen supply device utilizing liquid nitrogen cooling capacity |
| CN112483884A (en) * | 2020-12-21 | 2021-03-12 | 南通虹登机械设备有限公司 | Liquid gas storage device for improving inflation purity of SF6 gas station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |
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| CX01 | Expiry of patent term |