CN206862007U - Nitrogen gas recovering apparatus in oxygen generation system - Google Patents
Nitrogen gas recovering apparatus in oxygen generation system Download PDFInfo
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- CN206862007U CN206862007U CN201720571120.6U CN201720571120U CN206862007U CN 206862007 U CN206862007 U CN 206862007U CN 201720571120 U CN201720571120 U CN 201720571120U CN 206862007 U CN206862007 U CN 206862007U
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- nitrogen
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- storage tank
- air separation
- expansion turbine
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Abstract
It the utility model is related to waste gas recovery equipment field, nitrogen gas recovering apparatus specifically in oxygen generation system, with air separation equipment, air separation equipment has been respectively communicated with liquid oxygen storage tank and nitrogen storage tank, the main pipeline for reclaiming nitrogen leak is also communicated with air separation equipment, the compressor to be pressurizeed for the first time to nitrogen is sequentially arranged along nitrogen conveying direction on main pipeline, the cooler to be cooled to the nitrogen to pressurize for the first time, to nitrogen expand the booster expansion turbine of cooling refrigeration, the low temperature precooler connected with booster expansion turbine pressurized end, main heat exchanger, increase the subcooler of nitrogen degree of supercooling, subcooler connects with nitrogen storage tank；The utility model is effectively reclaimed, the rate of recovery can reach 70%, substantially increase the performance of enterprises by designing nitrogen gas recovering apparatus in oxygen generation system to the nitrogen that emptying is needed in traditional handicraft.
Description
Technical field
It the utility model is related to waste gas recovery equipment field, the specifically nitrogen gas recovering apparatus in oxygen generation system.
Background technology
Liquid oxygen is typically to refine separation from air using air separation equipment to form, due to also containing a large amount of nitrogen in air
Gas, and oxygen differs also little with the condensation point of nitrogen（Oxygen is -183 DEG C, and nitrogen is -195.8 DEG C）, therefore it is raw in industry
In production, to reduce production cost, the making of liquid oxygen and liquid nitrogen is usually to carry out simultaneously.
But in actual production process, it will usually produce a large amount of nitrogen（About 8000m3/h）, in conventional method, these
Nitrogen is directly vented, and causes serious waste.
The content of the invention
The phenomenon that a large amount of nitrogen caused by solve in prior art design are wasted by emptying, the utility model are directed to oxygen processed
System provides a kind of nitrogen gas recovering apparatus, and the nitrogen of emptying is effectively reclaimed, and saves production cost.
Concrete scheme of the present utility model is：Nitrogen gas recovering apparatus in oxygen generation system, there is air separation equipment, air
Separation equipment has been respectively communicated with liquid oxygen storage tank and nitrogen storage tank, is also communicated with air separation equipment for reclaiming emptying
The main pipeline of nitrogen, the compressor, right to be pressurizeed for the first time to nitrogen is sequentially arranged along nitrogen conveying direction on main pipeline
Cooler that the nitrogen to pressurize for the first time is cooled, nitrogen expand the booster expansion turbine of cooling refrigeration, with supercharging
Low temperature precooler, main heat exchanger, the subcooler for increasing nitrogen degree of supercooling, subcooler and the liquid nitrogen of turbo-expander pressurized end connection
Holding vessel connects, and the cooler connects with the pressurized end of booster expansion turbine；The main pipeline be located at main heat exchanger with it is low
Position between warm precooler also taps the heat exchange pipeline for carrying out heat exchange between low temperature nitrogen and nitrogen at room, heat exchange
Pipeline is connected along the low temperature nitrogen conveying direction successively expanding end with booster expansion turbine, main heat exchanger, and finally with supervisor
Road forms loop.
Position of the main pipeline described in the utility model between subcooler and nitrogen storage tank is also communicated with heat exchange branch
Pipeline, heat exchange branch pipe(tube) are connected after passing through subcooler with heat exchange pipeline, are also equipped with controlling liquid nitrogen recovery on heat exchange branch pipe(tube)
The choke valve of stability.
Principle of the present utility model is：Nitrogen leak under normal temperature is added by the compressor on main pipeline and cooler
After pressure, cooling, cooling is pressurized again in the pressurized end of booster expansion turbine, and reduce nitrogen temperature into main heat exchanger is interior
To -190 DEG C or so, a portion low temperature nitrogen increases degree of supercooling by the subcooler on main pipeline, and nitrogen is subcooled
Liquefaction（Avoid liquid nitrogen heat absorption heating gasification in course of conveying）, and be fed directly in nitrogen storage tank；
The expanding end that another part low temperature nitrogen then enters booster expansion turbine by heat exchange pipeline further cools down, and
Into in main heat exchanger, heat exchange cooling is carried out to " high temperature " nitrogen exported from the pressurized end of booster expansion turbine, now
It is back to again in main pipeline by the low temperature nitrogen of heat absorption heating, re-starts cooling recovery；
In said process, to ensure the stability of pressure in nitrogen storage tank, when nitrogen storage tank overvoltage, choke valve is opened
Open, the liquid nitrogen after cooler cools down can pass through heat exchange branch pipe(tube) and nitrogen is cooled into heat exchange pipeline.
The advantage that the utility model possesses is：
1st, by designing nitrogen gas recovering apparatus in oxygen generation system, the nitrogen that emptying is needed in traditional handicraft is effectively returned
Receive, the rate of recovery can reach 70%, substantially increase the performance of enterprises；
2nd, the utility model reliable design, ingenious, the particularly design of choke valve, has ensured the stabilization of nitrogen gas recovering apparatus
Property, at the same can also preferably avoid throttling after liquid nitrogen evaporating capacity it is excessive cause storage tank turgor pressure, have a good application prospect.
Brief description of the drawings
Fig. 1 is Tthe utility model system schematic diagram.
In figure：1- air separation equipments, 2- liquid oxygen storage tanks, 3- nitrogen storage tanks, 4- main pipelines, 5- compressors, 6- are cold
But device, 7- booster expansion turbines, 8- pressurized ends, 9- low temperature precoolers, 10- main heat exchangers, 11- subcoolers, 12- heat exchanger tubes
Road, 13- expanding ends, 14- heat exchange branch pipe(tube)s, 15- choke valves.
Embodiment
In the present embodiment, the nitrogen gas recovering apparatus in oxygen generation system has air separation equipment 1, and air separation equipment 1 divides
Liquid oxygen storage tank 2 and nitrogen storage tank 3 are not communicated with, are also communicated with air separation equipment 1 for reclaiming nitrogen leak
Main pipeline 4, be sequentially arranged on main pipeline 4 along nitrogen conveying direction nitrogen is pressurizeed for the first time compressor 5, to first
Cooler 6 that the nitrogen of pressurization is cooled and connected with the pressurized end 8 of booster expansion turbine 7, nitrogen is expanded
The booster expansion turbine 7 of cooling refrigeration, low temperature precooler 9, the main heat exchanger connected with booster expansion turbine pressurized end 8
10th, the subcooler 11 of nitrogen degree of supercooling is increased, subcooler 11 connects with nitrogen storage tank 3.
In the present embodiment, position of the main pipeline 4 between main heat exchanger 10 and low temperature precooler 9 also taps useful
Between low temperature nitrogen and nitrogen at room carry out heat exchange heat exchange pipeline 12, heat exchange pipeline 12 along low temperature nitrogen conveying direction according to
It is secondary to be connected with the expanding end of booster expansion turbine 7 13, main heat exchanger 10, and finally form loop with main pipeline 4.
In the present embodiment, position of the main pipeline 4 between subcooler 11 and nitrogen storage tank 3 is also communicated with heat exchange branch pipe
Road 14, heat exchange branch pipe(tube) 14 are connected after passing through subcooler 11 with heat exchange pipeline 12, are also equipped with controlling on heat exchange branch pipe(tube) 14
Liquid nitrogen reclaims the choke valve 15 of stability.
Claims (2)
1. the nitrogen gas recovering apparatus in oxygen generation system, has air separation equipment, air separation equipment has been respectively communicated with liquid oxygen storage
Deposit tank and nitrogen storage tank, it is characterised in that：The main pipeline for reclaiming nitrogen leak is also communicated with air separation equipment,
The compressor to be pressurizeed for the first time to nitrogen, the nitrogen to pressurizeing for the first time are sequentially arranged along nitrogen conveying direction on main pipeline
The cooler that is cooled, nitrogen is carried out expanding the booster expansion turbine of cooling refrigeration, is pressurized with booster expansion turbine
The low temperature precooler, main heat exchanger, the subcooler for increasing nitrogen degree of supercooling of connection are held, subcooler connects with nitrogen storage tank, institute
Cooler is stated to connect with the pressurized end of booster expansion turbine；The main pipeline is between main heat exchanger and low temperature precooler
Position also taps the heat exchange pipeline for carrying out heat exchange between low temperature nitrogen and nitrogen at room, and heat exchange pipeline is along low temperature nitrogen
The expanding end with booster expansion turbine, main heat exchanger are connected conveying direction successively, and finally form loop with main pipeline.
2. the nitrogen gas recovering apparatus in oxygen generation system according to claim 1, it is characterised in that：The main pipeline was located at
Position between cooler and nitrogen storage tank is also communicated with heat exchange branch pipe(tube), heat exchange branch pipe(tube) pass through after subcooler with heat exchange pipeline
Connection, it is also equipped with controlling the choke valve of liquid nitrogen recovery stability on heat exchange branch pipe(tube).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571120.6U CN206862007U (en) | 2017-05-22 | 2017-05-22 | Nitrogen gas recovering apparatus in oxygen generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571120.6U CN206862007U (en) | 2017-05-22 | 2017-05-22 | Nitrogen gas recovering apparatus in oxygen generation system |
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| Publication Number | Publication Date |
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| CN206862007U true CN206862007U (en) | 2018-01-09 |
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| CN201720571120.6U Active CN206862007U (en) | 2017-05-22 | 2017-05-22 | Nitrogen gas recovering apparatus in oxygen generation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981285A (en) * | 2018-06-19 | 2018-12-11 | 北京卫星环境工程研究所 | The nitrogen recycling liquefying plant of Space environment simulation facility cryogenic system |
| CN112066641A (en) * | 2020-09-25 | 2020-12-11 | 湖北浠水蓝天联合气体有限公司 | Tank car emptying oxygen, argon and nitrogen recovery system |
| CN112305178A (en) * | 2020-10-19 | 2021-02-02 | 诸暨涵杰机械配件有限公司 | Inert gas decompression drying device applied to food safety detection |
| CN112880090A (en) * | 2021-02-09 | 2021-06-01 | 艾尔文环境科技(深圳)有限公司 | Environment-friendly purification type oxygen-generating fresh air system |
| CN114216301A (en) * | 2021-11-08 | 2022-03-22 | 常州市长宇实用气体有限公司 | Device and method for cryogenic separation and production of high-purity liquid nitrogen |
-
2017
- 2017-05-22 CN CN201720571120.6U patent/CN206862007U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981285A (en) * | 2018-06-19 | 2018-12-11 | 北京卫星环境工程研究所 | The nitrogen recycling liquefying plant of Space environment simulation facility cryogenic system |
| CN112066641A (en) * | 2020-09-25 | 2020-12-11 | 湖北浠水蓝天联合气体有限公司 | Tank car emptying oxygen, argon and nitrogen recovery system |
| CN112305178A (en) * | 2020-10-19 | 2021-02-02 | 诸暨涵杰机械配件有限公司 | Inert gas decompression drying device applied to food safety detection |
| CN112880090A (en) * | 2021-02-09 | 2021-06-01 | 艾尔文环境科技(深圳)有限公司 | Environment-friendly purification type oxygen-generating fresh air system |
| CN112880090B (en) * | 2021-02-09 | 2022-03-22 | 艾尔文环境科技(深圳)有限公司 | Environment-friendly purification type oxygen-generating fresh air system |
| CN114216301A (en) * | 2021-11-08 | 2022-03-22 | 常州市长宇实用气体有限公司 | Device and method for cryogenic separation and production of high-purity liquid nitrogen |
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