CN202346770U - Automatic hydrogenation device for nitrogen purification - Google Patents
Automatic hydrogenation device for nitrogen purification Download PDFInfo
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- CN202346770U CN202346770U CN2011202929565U CN201120292956U CN202346770U CN 202346770 U CN202346770 U CN 202346770U CN 2011202929565 U CN2011202929565 U CN 2011202929565U CN 201120292956 U CN201120292956 U CN 201120292956U CN 202346770 U CN202346770 U CN 202346770U
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- inlet pipeline
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Abstract
The utility model discloses an automatic hydrogenation device for nitrogen purification, which comprises a deaerator, a raw material nitrogen inlet pipeline, a hydrogen inlet pipeline and a programmable logic controller (PLC) system. The deaerator is provided with a gas inlet pipe and a gas outlet pipe. The raw material nitrogen inlet pipeline is communicated with the gas inlet pipe, and a self-operated pressure regulating valve, a flow meter and an online oxygen content analyzer are sequentially arranged on the raw material nitrogen inlet pipeline. The hydrogen inlet pipeline is communicated with the gas inlet pipe and provided with a mass flow controller. The flow meter, the online oxygen content analyzer and the mass flow controller are all electrically connected with the PLC system. The automatic hydrogenation device for the nitrogen purification improves hydrogenation accuracy, and is high in intelligent degree and safety performance.
Description
Technical field
The utility model relates to the nitrogen-making device field, particularly relates to the automatic hydrogenation unit of a kind of nitrogen purification.
Background technology
Along with fast development of national economy and development of technology, some industrial circles and R&D institution, to high-purity nitrogen require increasingly high.Usually, the nitrogen that makes through air separation all contains a certain proportion of foreign gas, as: O
2, H
2O, CO
2, Ar etc.When nitrogen uses as protective gas, require wherein oxygen and moisture are reduced to tolerance interval.At present, using more is general nitrogen deoxidization by adding hydrogen mode, promptly through in nitrogen, feeding hydrogen, under the effect of catalyzer, in deoxygenator, reacts, and removes the minor amounts of oxygen in the nitrogen.But; Because the oxygen level in the nitrogen is unfixing; Especially some online nitrogen-making devices are like making nitrogen by pressure swing adsorption device, film separation and nitrogen-making device etc., because operating mode is switched and caused that oxygen level also changes in the general nitrogen on the unstable or technology of operating mode thereupon; Correspondingly, need the amount of adding hydrogen also will change thereupon.How to control the amount of hydrogenation automatically, just become a difficult problem of a pendulum in face of engineering technical personnel.
Disclose the automatic hydrogenation unit of a kind of nitrogen purification equipment in the prior art, it is to be provided with by under meter L at the nitrogen outlet place of nitrogen purification equipment
1, under meter L
2, sampling apparatus, under meter L
1, under meter L
2Controlled by the PLC system, and connect deoxygenator.The PLC system is through receiving import nitrogen gas purity signal, the under meter L that sampling apparatus transmits
1The import nitrogen flow signal that transmits, carry out functional operation after, give under meter L2 one and open big signal in a small amount and come automatic control control hydrogenation amount.This installs in the time of the flow of nitrogen and pressure-stabilisation, and the hydrogenation amount is also more stable, easily control; Control to such an extent that particularity is better; But lack back level purity nitrogen parameter control, also can't feed back, and this device is higher to the stability requirement of nitrogen gas pressure and flow the prime hydrogenation system.
The utility model content
The technical problem that the utility model mainly solves provides the automatic hydrogenation unit of a kind of nitrogen purification, can realize adjusting automatically the amount of hydrogenation, realizes unmanned guard, high, the good reliability of level of automation, and precision is high.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the automatic hydrogenation unit of a kind of nitrogen purification comprises:
Deoxygenator, said deoxygenator has inlet pipe and escape pipe;
Raw nitrogen gas inlet ductwork, said raw nitrogen gas inlet ductwork be communicated with said inlet pipe and said raw nitrogen gas inlet ductwork on be provided with self-contained pressure regulator, under meter and online oxygen analysis appearance successively;
Hydrogen inlet pipeline, said hydrogen inlet pipeline are communicated with said inlet pipe and said hydrogen inlet pipeline is provided with mass flow controller; With
The PLC system;
Wherein, said under meter, online oxygen analysis appearance and mass flow controller all are electrical connected with said PLC system.
In preferred embodiment of the utility model, also comprise online hydrogen richness analyser, described online hydrogen richness analyser is arranged on the escape pipe of deoxygenator, is electrical connected with described PLC system.
In preferred embodiment of the utility model, described mass flow controller and and its PLC system that is electrical connected between flow regulator is set.
The beneficial effect of the utility model is:
1, the utility model is equipped with self-contained pressure regulator in the import of nitrogen pipeline, plays the effect of steady pressure, eliminates the influence that the forepressure fluctuation causes, thereby guarantees the nitrogen pressure and the stability of flow of import.
2, the utility model can be monitored the oxygen level in the inlet nitrogen simultaneously and exported the excessive hydrogen content in the purity nitrogen.Calculate the hydrogenation amount through oxygen level, under meter, divide appearance to feed back by back level hydrogen again, can excessive hydrogen content be controlled at a lower scope, the utility model has improved the particularity of hydrogenation, and intelligent degree and safe performance are higher.
Description of drawings
Fig. 1 is the structural representation of automatic hydrogenation unit one preferred embodiment of the utility model nitrogen purification;
The mark of each parts is following in the accompanying drawing: 1, raw nitrogen gas inlet ductwork; 2, hydrogen inlet pipeline; 3, self-contained pressure regulator; 4, under meter; 5, online oxygen analysis appearance; 6, mass flow controller; 7, PLC system; 8, deoxygenator; 9, online hydrogen richness analyser; 10, flow regulator; 11, inlet pipe; 12, escape pipe.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiment of the utility model is set forth in detail, thereby the protection domain of the utility model is made more explicit defining so that advantage of the utility model and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1, the automatic hydrogenation unit of a kind of nitrogen purification of the utility model comprises:
Raw nitrogen gas inlet ductwork 1, described raw nitrogen gas inlet ductwork 1 be communicated with inlet pipe 11 and said raw nitrogen gas inlet ductwork 1 on be provided with self-contained pressure regulator 3, under meter 4 and online oxygen analysis appearance 5 successively;
PLC system 7;
Wherein, said under meter 4, online oxygen analysis appearance 5 and mass flow controller 6 all are electrical connected with said PLC system 7.
In the utility model; Also comprise online hydrogen richness analyser 9; Described online hydrogen richness analyser 9 is arranged on the escape pipe 12 of deoxygenator 8; Be electrical connected with described PLC system 7, described mass flow controller 6 and and its PLC system 7 that is electrical connected between flow regulator 10 is set.
In the utility model, self-contained pressure regulator 3 plays steady pressure, eliminates the influence that the forepressure fluctuation causes; Under meter 4 will be exported signal, and the oxygen level signal of online oxygen analysis appearance 5 and the hydrogen richness signal of online hydrogen richness analyser 9 are uploaded to PLC system 7, calculate the oxygen flow in the inlet nitrogen through PLC system 7; Can calculate the amount that needs hydrogenation then; Through analog output module, convert this value into 4～20mA current signal, export to flow regulator 10; Come the size of controlling quality flow director 6 apertures through flow regulator 10, thereby regulate the hydrogenation amount.In the exit hydrogen richness in the nitrogen is detected; And as feedback signal; Hydrogen richness and settings are done in real time relatively, when hydrogen richness surpasses or is lower than setting range, through the 7 inner PID computings of PLC system; Output current signal is done corresponding adjustment, and the hydrogenation amount is made adjustment.
The utility model can be monitored the oxygen level in the inlet nitrogen simultaneously and exported the excessive hydrogen content in the purity nitrogen; Calculate the hydrogenation amount through oxygen level, under meter; Divide appearance to feed back by back level hydrogen again; Can excessive hydrogen content be controlled at a lower scope, under the situation of oxygen level less than 1ppm, excessive hydrogen content can be controlled in below the 100ppm in guaranteeing purity nitrogen.The utility model has improved the particularity of hydrogenation, and intelligent degree and safe performance are higher.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification sheets and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (3)
1. the automatic hydrogenation unit of nitrogen purification is characterized in that, comprising:
Deoxygenator, said deoxygenator has inlet pipe and escape pipe;
Raw nitrogen gas inlet ductwork, said raw nitrogen gas inlet ductwork be communicated with said inlet pipe and said raw nitrogen gas inlet ductwork on be provided with self-contained pressure regulator, under meter and online oxygen analysis appearance successively;
Hydrogen inlet pipeline, said hydrogen inlet pipeline are communicated with said inlet pipe and said hydrogen inlet pipeline is provided with mass flow controller; With
The PLC system;
Wherein, said under meter, online oxygen analysis appearance and mass flow controller all are electrical connected with said PLC system.
2. the automatic hydrogenation unit of nitrogen purification according to claim 1 is characterized in that, also comprises online hydrogen richness analyser, and described online hydrogen richness analyser is arranged on the escape pipe of deoxygenator, is electrical connected with described PLC system.
3. the automatic hydrogenation unit of nitrogen purification according to claim 1 is characterized in that, described mass flow controller and and its PLC system that is electrical connected between flow regulator is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202929565U CN202346770U (en) | 2011-08-12 | 2011-08-12 | Automatic hydrogenation device for nitrogen purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202929565U CN202346770U (en) | 2011-08-12 | 2011-08-12 | Automatic hydrogenation device for nitrogen purification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202346770U true CN202346770U (en) | 2012-07-25 |
Family
ID=46535787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202929565U Expired - Fee Related CN202346770U (en) | 2011-08-12 | 2011-08-12 | Automatic hydrogenation device for nitrogen purification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202346770U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980260A (en) * | 2017-05-22 | 2017-07-25 | 辽宁沃德玛克工业设备制造有限公司 | One kind hydrogenation purification system closed loop Automatic-hydrogenation control system and control method |
| CN107500395A (en) * | 2017-10-12 | 2017-12-22 | 佛山市宝粤美科技有限公司 | Waste Water Treatment |
| CN110240128A (en) * | 2019-05-28 | 2019-09-17 | 苏州海宇气体设备有限公司 | A kind of Automatic-hydrogenation nitrogen purification devices |
| CN110937583A (en) * | 2019-12-16 | 2020-03-31 | 杭州盛博净化设备有限公司 | Nitrogen making machine |
| CN110980662A (en) * | 2019-12-28 | 2020-04-10 | 南京宝雅气体有限公司 | Catalytic deoxidation process for producing high-purity nitrogen |
-
2011
- 2011-08-12 CN CN2011202929565U patent/CN202346770U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980260A (en) * | 2017-05-22 | 2017-07-25 | 辽宁沃德玛克工业设备制造有限公司 | One kind hydrogenation purification system closed loop Automatic-hydrogenation control system and control method |
| CN107500395A (en) * | 2017-10-12 | 2017-12-22 | 佛山市宝粤美科技有限公司 | Waste Water Treatment |
| CN110240128A (en) * | 2019-05-28 | 2019-09-17 | 苏州海宇气体设备有限公司 | A kind of Automatic-hydrogenation nitrogen purification devices |
| CN110937583A (en) * | 2019-12-16 | 2020-03-31 | 杭州盛博净化设备有限公司 | Nitrogen making machine |
| CN110937583B (en) * | 2019-12-16 | 2021-05-18 | 杭州盛博净化设备有限公司 | Nitrogen making machine |
| CN110980662A (en) * | 2019-12-28 | 2020-04-10 | 南京宝雅气体有限公司 | Catalytic deoxidation process for producing high-purity nitrogen |
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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: 20120725 Termination date: 20170812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |