CN207280080U - A kind of cryogenic rectification method purifies nitrogen device - Google Patents
A kind of cryogenic rectification method purifies nitrogen device Download PDFInfo
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- CN207280080U CN207280080U CN201721225338.2U CN201721225338U CN207280080U CN 207280080 U CN207280080 U CN 207280080U CN 201721225338 U CN201721225338 U CN 201721225338U CN 207280080 U CN207280080 U CN 207280080U
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Abstract
A kind of cryogenic rectification method purifies nitrogen device, the device includes a low-temperature fractionating tower for carrying condenser, be configured with outside the low-temperature fractionating tower one for raw nitrogen gas by and be cooled to the main heat exchanger of saturation temperature, one is at least additionally provided with the main heat exchanger for obtaining the high pure nitrogen heat exchanger channels that product high pure nitrogen draws and pass through from low-temperature fractionating tower top；One is also configured with outside the low-temperature fractionating tower for obtaining low pure liquid nitrogen extraction and the subcooler passed through from low-temperature fractionating tower lower part.
Description
Technical field
A kind of cryogenic rectification method nitrogen purification device is the utility model is related to, is mainly used for removing part from raw nitrogen gas
Impurity produces high pure nitrogen product, belongs to cryogenic gas separation technology field to improve the quality of nitrogen.
Background technology
As the development level of China's chemical industry steps up, the raising of industrial production efficiency and more advanced technique
Flow all has the requirement of higher to the purity of unstrpped gas；Especially to O2The more active material of this kind of chemical property,
In the actual production process, its flow control is obtained smaller, production efficiency can be also obviously improved.
Combine on-site actual situations under these conditions, it is desirable to provide it is as succinct convenient as possible, existing apparatus is influenced compared with
Small nitrogen purification scheme, to rapidly adapt to the needs of new process.
The content of the invention
The purpose of the utility model is to overcome the shortcomings of the prior art, and it is simple to provide a kind of structure composition, into
This is low, can effectively remove the impurity such as the oxygen in original Nitrogen pipe network, argon, hydrogen, increases the low temperature of the yield of high-purity nitrogen product
Rectification method nitrogen purification device and method of purification.
The purpose of this utility model is completed by following technical solution, a kind of cryogenic rectification method purification nitrogen dress
Put, it includes a low-temperature fractionating tower for carrying condenser, and be configured with one outside the low-temperature fractionating tower passes through simultaneously for raw nitrogen gas
The main heat exchanger of saturation temperature is cooled to, one is at least additionally provided with the main heat exchanger for being produced from low-temperature fractionating tower top
The high pure nitrogen heat exchanger channels that product high pure nitrogen is drawn and passed through；One is also configured with outside the low-temperature fractionating tower for smart from low temperature
Evaporate tower lower part and obtain the subcooler that low pure liquid nitrogen is drawn and passed through, one is additionally provided with the subcooler and is supplied from cryogenic rectification tower top
Portion obtains the supercooling heat exchanger channels that lower purified nitrogen gas is drawn and passed through.
As preferred：Be additionally provided with the main heat exchanger one for lower purified nitrogen gas 05 from subcooler after again into
The lower purified nitrogen gas heat exchanger channels entered；The low-temperature fractionating tower is also outer to match somebody with somebody the cryogenic liquid recharge system for being useful for cold supplement,
The liquid nitrogen of the system pours in down a chimney pipeline and the top of low-temperature fractionating tower is connected to by low pure 04 pipeline connection of liquid nitrogen after subcooler.
The utility model has the characteristics that：
Purified first, the utility model is directed to a certain amount of nitrogen in existing Nitrogen pipe network, Min. influences existing
The production of process unit.Ice chest assembling at the same time is dispatched from the factory, and reduces field engineering workload, coordinates new process requirement with prestissimo,
Improving production efficiency；
Second, the utility model can such as increase liquid magnitude of recruitment or expanding machine load by way of increasing cold supply,
Increase the yield of high-purity liquid nitrogen, bailout gas or take-away when can be used as overhauling according to actual conditions；
The utility model has that structure composition is simple, and cost is low, can effectively remove the oxygen in original Nitrogen pipe network, argon,
The features such as impurity such as hydrogen, the yield of increase high-purity nitrogen product.
Brief description of the drawings
Fig. 1 is a preferred embodiment schematic diagram of the utility model.
Label in figure is：01 is raw nitrogen gas, and 02 is main heat exchanger, and 03 raw material liquid nitrogen comes from user, and 04 is low pure liquid
Nitrogen, 05 is tower lower purified nitrogen gas, and 06 is product high pure nitrogen；07 is nitrogen tower；08 is condenser；09 is subcooler；10 be residual air
Emptying；11 be high purity liquid state nitrogen pipeline.
Embodiment
The utility model is further described below in conjunction with attached drawing：Shown in Fig. 1, one kind described in the utility model
Cryogenic rectification method purifies nitrogen device, it includes a low-temperature fractionating tower for carrying condenser, is configured outside the low-temperature fractionating tower
Have one for raw nitrogen gas by and be cooled to the main heat exchanger of saturation temperature, be at least additionally provided with the main heat exchanger one for from
Low-temperature fractionating tower top obtains the high pure nitrogen heat exchanger channels that product high pure nitrogen 06 is drawn and passed through；The low-temperature fractionating tower
It is outer to be also configured with one for obtaining the subcooler that low pure liquid nitrogen 04 draws and pass through from low-temperature fractionating tower lower part, in the subcooler also
One is provided with for obtaining the supercooling heat exchanger channels that lower purified nitrogen gas 05 draws and pass through from cryogenic rectification top of tower.
Shown in figure, be additionally provided with the main heat exchanger one for lower purified nitrogen gas 05 from subcooler after again into
The lower purified nitrogen gas heat exchanger channels entered；The low-temperature fractionating tower is also outer to match somebody with somebody the cryogenic liquid recharge system for being useful for cold supplement,
The liquid nitrogen of the system pours in down a chimney pipeline and the top of low-temperature fractionating tower is connected to by low pure 04 pipeline connection of liquid nitrogen after subcooler.
Embodiment 1：Shown in Fig. 1, after raw nitrogen gas 01 is cooled to saturation temperature into plate heat exchanger 02, into nitrogen tower 07
Participate in rectifying；
Nitrogen obtains low pure liquid nitrogen 04 and product high pure nitrogen 06, low pure liquid nitrogen and passes through subcooler 09 after nitrogen tower rectifying
After supercooling, and the supplement mixing throttling of liquid nitrogen 03, into condenser 08, the low-temperature receiver as distillation system.The height obtained from rectifying column
Pure nitrogen gas becomes the return rectifying column of high purity liquid state nitrogen 11 after entering condenser/evaporator condensation, and another part is obtained from the top of rectifying column
As product 06, the re-heat cooling box in plate heat exchanger is sent into user's pipe network to the high pure nitrogen obtained；It is vented at the same time equipped with residual air
10, prevent the accumulation of fixed gas；
After drawing lower purified nitrogen gas 05, and 09 mixing of residual air emptying from condenser/evaporator top, go out through plate heat exchanger re-heat
Ice chest, may be selected to return to specified pipe network or emptying according to component；
Above-described embodiment is only one of case study on implementation of the utility model, is come for the device of cryogenic rectification method purification nitrogen
Say, various modifications and optimization can be made, but no matter which kind of change is flow make, as long as being used in corollary apparatus and method
Pour in down a chimney cryogenic liquid or expander refrigeration, configuration rectifying column carries out respective components the technology path of separating-purifying, belongs to this
The protection domain of patent.
Claims (2)
1. a kind of cryogenic rectification method purifies nitrogen device, it includes a low-temperature fractionating tower for carrying condenser, it is characterised in that institute
Be configured with outside the low-temperature fractionating tower stated one for raw nitrogen gas by and be cooled to the main heat exchanger of saturation temperature, in the main heat exchanger
In be at least additionally provided with one for from low-temperature fractionating tower top obtaining product high pure nitrogen（06）The high pure nitrogen drawn and passed through changes
The passage of heat；One is also configured with outside the low-temperature fractionating tower for obtaining low pure liquid nitrogen from low-temperature fractionating tower lower part（04）Draw and lead to
The subcooler crossed, is additionally provided with one for obtaining lower purified nitrogen gas from cryogenic rectification top of tower in the subcooler（05）Draw and pass through
Supercooling heat exchanger channels.
2. cryogenic rectification method according to claim 1 purifies nitrogen device, it is characterised in that in the main heat exchanger also
It is provided with one and supplies lower purified nitrogen gas（05）The lower purified nitrogen gas heat exchanger channels being again introduced into from subcooler after；The low temperature essence
Evaporate that tower is also outer with the cryogenic liquid recharge system for being useful for cold supplement, the liquid nitrogen of the system pour in down a chimney pipeline with by subcooler after
Low pure liquid nitrogen（04）Pipeline connection is connected to the top of low-temperature fractionating tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225338.2U CN207280080U (en) | 2017-09-22 | 2017-09-22 | A kind of cryogenic rectification method purifies nitrogen device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721225338.2U CN207280080U (en) | 2017-09-22 | 2017-09-22 | A kind of cryogenic rectification method purifies nitrogen device |
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| CN207280080U true CN207280080U (en) | 2018-04-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560318A (en) * | 2017-09-22 | 2018-01-09 | 杭州杭氧股份有限公司 | A kind of cryogenic rectification method nitrogen purification device and method of purification |
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2017
- 2017-09-22 CN CN201721225338.2U patent/CN207280080U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560318A (en) * | 2017-09-22 | 2018-01-09 | 杭州杭氧股份有限公司 | A kind of cryogenic rectification method nitrogen purification device and method of purification |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.799, Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou oxygen generator group Co.,Ltd. Address before: 311241, No. 99, East Ring Road, Qingshan Lake Street, Hangzhou, Zhejiang, Ling'an Patentee before: HANGZHOU HANGYANG Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 799 Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee after: Hang Yang Group Co.,Ltd. Address before: 799 Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou oxygen generator group Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |