CN205842203U - Liquid nitrogen automatic recycling device in a kind of neon helium separation process - Google Patents
Liquid nitrogen automatic recycling device in a kind of neon helium separation process Download PDFInfo
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- CN205842203U CN205842203U CN201620607345.8U CN201620607345U CN205842203U CN 205842203 U CN205842203 U CN 205842203U CN 201620607345 U CN201620607345 U CN 201620607345U CN 205842203 U CN205842203 U CN 205842203U
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- liquid nitrogen
- storage tank
- nitrogen storage
- separation process
- recycling device
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Abstract
This utility model provides liquid nitrogen automatic recycling device in a kind of neon helium separation process, this retracting device includes: liquid nitrogen equipment, the first liquid nitrogen storage tank, vacuum pump, self-pressure evaporator, the second liquid nitrogen storage tank and control device, controls device and regulates valve respectively with liquid nitrogen equipment, vacuum pump, self-pressure evaporator, liquid nitrogen emissions adjustment valve, evacuation, regulates valve electric connection from boost pressure regulation valve and the first liquid nitrogen storage tank.This utility model automatic recycling device is by rationally arranging the first liquid nitrogen storage tank and the volume of the second liquid nitrogen storage tank, the pumping speed of vacuum pump, most liquid nitrogen can be completed reclaim, and the drain age velocity using liquid nitrogen plan can be improved, reduce liquid nitrogen consumption, and use DCS or PLC computer to control, without manual intervention, automaticity is high.
Description
Technical field
This utility model relates to the improvement device of a kind of separating-purifying neon and Helium process, particularly relates to a kind of neon helium and divides
Liquid nitrogen automatic recycling device during from.
Background technology
Neon and helium are noble gases, and its aerial content is only 18.18 × 10-6With 5.24 × 10-6.Neon,
Helium is fixed gas in air separation plant rectifying column, and is gathered in main condenser top and nitrogen backflow with gaseous state, be difficult to by
Separate.
Along with the development of science and technology, neon and helium are applicable to the every field of industry the most in a large number.Neon is used for filling boat
Beacon light, neon light and the safe cryogen as low temperature test room；Helium is used as the protection gas of rare metal refine and prepares deep
Breath in water operation, aerospace, for pressure vessel, vacuum system leak detection with make helium neon laser, also at atomic energy, red
The aspects such as outside line detection, cryotronics are applied.
In prior art, extract neon raw material and mainly extract thick neon helium mix gas from big space division, be then passed through following
Several steps purify: the purification of oxygenation catalytic dehydrogenation, cryogenic absorption, cryogenic separation, cryogenic absorption are except neon purification helium.Such as: the patent No.
CN103423968A " a kind of neon helium separation and Extraction system and technique ".In this technique, low-temperature receiver source mainly liquid nitrogen provides, wherein
Adsorption cleaning unit and the liquid nitrogen consumption of helium acquiring unit big, because being two groups of switching uses, (the general cycle after end cycle
It is 8 hours), liquid nitrogen is directly discharged in air, causes waste.Vacuum is utilized as patent CN105402605A discloses one
The device and method of liquid nitrogen is received in blowback, by increasing a small-sized liquid nitrogen storage tank and associated buck pressurizer and pipeline being made skill
Art improvement processes, thus realizes liquid nitrogen recycling；And CN105526500A discloses a kind of liquid nitrogen recovery device and returns
Receiving method, it is by increasing liquid nitrogen storage tank, at the first supercharger and arranges the second supercharger in the second liquid nitrogen storage tank, thus
Achieve liquid nitrogen recycling.But above-mentioned retracting device increases equipment cost, and recovery method is loaded down with trivial details, and there is manual operation by mistake
The problems such as difference is big, liquefied ammonia organic efficiency is low.
Therefore, those skilled in the art is devoted to develop a kind of automatic recycling device reducing liquid nitrogen consumption, becomes mesh
Front problem demanding prompt solution.
Utility model content
The purpose of this utility model is, the cycle too big for the liquid nitrogen consumption in existing ne-He mixture body separation process
The features such as type work, it is proposed that liquid nitrogen automatic recycling device in a kind of neon helium separation process such that it is able to realize the automatic of liquid nitrogen
Change and reclaim and recycling, reduce the consumption of liquid nitrogen.
This utility model is for solving above-mentioned technical problem by the following technical solutions:
This utility model provides liquid nitrogen automatic recycling device in a kind of neon helium separation process, and described retracting device includes:
Liquid nitrogen equipment, for separating-purifying neon, helium gas from neon, helium mix gas；
First liquid nitrogen storage tank, is connected with described liquid nitrogen equipment by conveyance conduit and liquid nitrogen emissions adjustment valve, is used for
The liquid nitrogen of storage liquid nitrogen equipment discharge；
Vacuum pump, regulates valve by conveyance conduit and evacuation and is connected with described first liquid nitrogen storage tank, be used for reducing described in
Air pressure in first liquid nitrogen storage tank；
Self-pressure evaporator, is connected with described first liquid nitrogen storage tank by conveyance conduit with from boost pressure regulation valve, is used for increasing
Air pressure in the most described first liquid nitrogen storage tank；
Second liquid nitrogen storage tank, regulates valve by conveyance conduit and the first liquid nitrogen storage tank and is connected with described first liquid nitrogen storage tank,
By the described liquid nitrogen of described liquid nitrogen equipment discharge in storing described first liquid nitrogen storage tank；
Control device, respectively with described vacuum pump, self-pressure evaporator, liquid nitrogen emissions adjustment valve, evacuation regulation valve, from
Boost pressure regulation valve and the first liquid nitrogen storage tank regulation valve are electrically connected with.
Further, the capacity of described first liquid nitrogen storage tank is less than the capacity of described second liquid nitrogen storage tank.
Further, described liquid nitrogen emissions adjustment valve, evacuation regulation valve and the first liquid nitrogen storage tank regulation valve are electromagnetism
Valve.
Further, described liquid nitrogen equipment includes adsorption cleaning unit and helium acquiring unit.
Further, described second liquid nitrogen storage tank is by conveyance conduit and the second liquid nitrogen storage tank regulation valve and described liquid nitrogen work
Make device to connect, the liquid nitrogen of described recovery is provided to described liquid nitrogen equipment.
Further, described control device is DCS or PLC control system.
Further, described self-pressure evaporator connects with described liquid nitrogen equipment also by conveyance conduit and electromagnetic valve
Connect, to increase the air pressure in described liquid nitrogen equipment.
Further, described liquid nitrogen equipment, the first liquid nitrogen storage tank and the second liquid nitrogen storage tank are mounted on temperature to pass
Sensor, described temperature sensor is ultralow temperature temperature sensor.
Further, described liquid nitrogen equipment, the first liquid nitrogen storage tank and the second liquid nitrogen storage tank are mounted on pressure to pass
Sensor, described pressure transducer is ultralow temperature pressure transducer.
Further, described first liquid nitrogen storage tank and the second liquid nitrogen storage tank being mounted on liquidometer, described liquid level is calculated as
Radar level gauge or capacitance level gauge.
This utility model uses above technical scheme, compared with prior art, has the following technical effect that
Liquid nitrogen recovery device of the present utility model through reasonable disposition the first liquid nitrogen storage tank and the volume of the second liquid nitrogen storage tank,
The pumping speed of vacuum pump can complete most liquid nitrogen and reclaim, and can improve the drain age velocity using liquid nitrogen plan, reduces liquid nitrogen
Consume；And using DCS or PLC computer to control, it is not necessary to manual intervention, automaticity is high.
Accompanying drawing explanation
Fig. 1 is the process chart of liquid nitrogen automatic recycling device in this utility model a kind of neon helium separation process；
Fig. 2 is the control logic chart of liquid nitrogen automatic recovery method in this utility model a kind of neon helium separation process；
1-liquid nitrogen equipment, 11-adsorption cleaning unit, 12-nitrogen acquiring unit, 2-liquid nitrogen emissions adjustment valve, 3-first
Liquid nitrogen storage tank, 4-evacuation regulation valve, 5-vacuum pump, 6-is from boost pressure regulation valve, 7-self-pressure evaporator, 8-the first liquid nitrogen storage tank
Regulation valve, 9-the second liquid nitrogen storage tank.
Detailed description of the invention
Below in conjunction with the accompanying drawings the technical solution of the utility model is described in further detail.
As it is shown in figure 1, present embodiments provide liquid nitrogen automatic recycling device in a kind of neon helium separation process, this retracting device
Including:
Liquid nitrogen equipment 1, for separating-purifying neon, helium gas from neon, helium mix gas；
First liquid nitrogen storage tank 3, is connected with liquid nitrogen equipment 1 by conveyance conduit and liquid nitrogen emissions adjustment valve 2, is used for depositing
The liquid nitrogen of liquid storage nitrogen equipment 1 discharge；
Vacuum pump 5, regulates valve 4 by conveyance conduit and evacuation and is connected with the first liquid nitrogen storage tank 3, for reducing the first liquid
Air pressure in nitrogen storage tank 3；
Self-pressure evaporator 7, is connected with the first liquid nitrogen storage tank 3 by conveyance conduit with from boost pressure regulation valve 6, is used for increasing
Air pressure in first liquid nitrogen storage tank 3；
Second liquid nitrogen storage tank 9, regulates valve 8 by conveyance conduit and the first liquid nitrogen storage tank and is connected with the first liquid nitrogen storage tank 3, use
The liquid nitrogen discharged by liquid nitrogen equipment 1 in storing the first liquid nitrogen storage tank 3；
Control device (Fig. 1 is not shown), respectively with vacuum pump 5, self-pressure evaporator 7, liquid nitrogen emissions adjustment valve 2, take out true
Air-conditioning saves valve 4, is electrically connected with from boost pressure regulation valve 6 and the first liquid nitrogen storage tank regulation valve 8, to realize automatization's recovery of nitrogen.
As an aspect of the present embodiment, the capacity of the first liquid nitrogen storage tank 3 is less than 9 capacity of the second liquid nitrogen storage tank.Liquid
Nitrogen discharged regulation valve 2, evacuation regulation valve 4 and the first liquid nitrogen storage tank regulation valve 8 are electromagnetic valve, electrically connect with controlling device
Connect.Wherein, liquid nitrogen equipment 1 includes adsorption cleaning unit 11 and helium acquiring unit 12.Additionally, for realize following of nitrogen resource
Ring recycling, makes the second liquid nitrogen storage tank 9 by conveyance conduit and the second liquid nitrogen storage tank regulation valve (Fig. 1 is not shown) and liquid nitrogen
Equipment 1 connects.Controlling device is DCS or PLC control system.
As an aspect of the present embodiment, self-pressure evaporator 7 works with liquid nitrogen also by conveyance conduit and electromagnetic valve
Device 1 connects, to increase the air pressure in described liquid nitrogen equipment 1.Liquid nitrogen equipment the 1, first liquid nitrogen storage tank 3 and the second liquid
Being mounted on nitrogen storage tank 8 and control temperature sensor and the pressure transducer that device electric wire is connected, temperature sensor is ultralow
Temperature temperature sensor, pressure transducer is ultralow temperature pressure transducer.Also pacify on first liquid nitrogen storage tank 3 and the second liquid nitrogen storage tank 5
Equipped with the liquidometer being connected with control device electric wire, this liquidometer selects radar level gauge or capacitance level gauge.
As in figure 2 it is shown, the operation principle of liquid nitrogen automatic recycling device is in this utility model neon helium separation process:
Using liquid nitrogen equipment 1 before fixed cycle discharge liquid nitrogen, evacuation regulation valve 4 is opened, and vacuum pump 5 starts
Take out the gas of 3 in little volume storage tank, the pressure in the first liquid nitrogen storage tank 3 is reduced to vacuum state 80KPa (A)；Device for opening
Liquid nitrogen emissions adjustment valve 2, uses liquid nitrogen equipment 1 to start to discharge liquid nitrogen, period, and vacuum pump 5 is in running order；Use liquid
After 1 liquid nitrogen discharge is put in nitrogen work, close liquid nitrogen emissions adjustment valve 2 and evacuation regulation valve 4, close vacuum pump 5；Pass through
PLC computer control system judges whether the liquid level in the first liquid nitrogen storage tank 3 reaches specified altitude assignment, the such as first liquid nitrogen storage tank 3
For 1m3Time, height can be set 900mm；As reached, open from boost pressure regulation valve 6, be pressurized to liquid to the first liquid nitrogen storage tank 3
Nitrogen can fill the pressure into the second liquid nitrogen storage tank 9, if the pressure of the second liquid nitrogen storage tank 9 is 0.6MPa, highly during 10m, and the first liquid
The pressure of nitrogen storage tank 3 is at least 0.7MPa, properly increases pressure and is conducive to accelerating the liquid nitrogen velocity of discharge；Open the first liquid nitrogen storage tank
Regulation valve 8 discharges liquid nitrogen, after the first liquid nitrogen storage tank 3 is reduced to relatively low liquid level such as 400mm, closes the first liquid nitrogen storage tank regulation valve 8
Stopping discharge liquid nitrogen, liquid nitrogen reclaims and terminates.The liquid nitrogen reclaimed can be by the second liquid nitrogen storage tank regulation valve in liquid nitrogen equipment 1
Supply liquid nitrogen.If specified altitude assignment is not arrived in the liquid level position in the first liquid nitrogen storage tank 3, side controls device and does not perform discharge opeing step, etc.
When next cycle reaches specified altitude assignment until liquid level, it is then turned on the first liquid nitrogen storage tank regulation valve 8 row to the second liquid nitrogen storage tank 9
Liquid.
Liquid nitrogen automatic recycling device of the present utility model is by the volume of reasonable disposition the first liquid nitrogen storage tank, the taking out of vacuum pump
Speed, can complete most liquid nitrogen and reclaim, and the liquid nitrogen response rate reaches 96%, and can improve the discharge opeing speed using liquid nitrogen plan
Degree, reduces liquid nitrogen consumption；And use DCS or PLC computer to control whole removal process, it is not necessary to manual intervention, automatization
Degree is high.
Above specific embodiment of the utility model is described in detail, but it has been only used as example, this utility model
It is not restricted to particular embodiments described above.To those skilled in the art, any equivalent that this practicality is carried out
Amendment and replacement are the most all among category of the present utility model.Therefore, institute under without departing from spirit and scope of the present utility model
The impartial conversion made and amendment, all should contain in the range of this utility model.
Claims (10)
1. liquid nitrogen automatic recycling device in a neon helium separation process, it is characterised in that described retracting device includes:
Liquid nitrogen equipment, for separating-purifying neon, helium gas from neon, helium mix gas；
First liquid nitrogen storage tank, is connected with described liquid nitrogen equipment by conveyance conduit and liquid nitrogen emissions adjustment valve, is used for storing
The liquid nitrogen of liquid nitrogen equipment discharge；
Vacuum pump, regulates valve by conveyance conduit and evacuation and is connected with described first liquid nitrogen storage tank, be used for reducing described first
Air pressure in liquid nitrogen storage tank；
Self-pressure evaporator, is connected with described first liquid nitrogen storage tank by conveyance conduit with from boost pressure regulation valve, is used for increasing institute
State the air pressure in the first liquid nitrogen storage tank；
Second liquid nitrogen storage tank, regulates valve by conveyance conduit and the first liquid nitrogen storage tank and is connected with described first liquid nitrogen storage tank, be used for
The described liquid nitrogen discharged by described liquid nitrogen equipment in storing described first liquid nitrogen storage tank；
Control device, regulate valve, from supercharging with described vacuum pump, self-pressure evaporator, liquid nitrogen emissions adjustment valve, evacuation respectively
Regulation valve and the first liquid nitrogen storage tank regulation valve are electrically connected with.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described first liquid
The capacity of nitrogen storage tank is less than the capacity of described second liquid nitrogen storage tank.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described liquid nitrogen is arranged
Put regulation valve, evacuation regulation valve and the first liquid nitrogen storage tank regulation valve and be electromagnetic valve.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described liquid nitrogen work
Adsorption cleaning unit and helium acquiring unit is included as device.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described second liquid
Nitrogen storage tank is connected with described liquid nitrogen equipment, to described liquid nitrogen work clothes by conveyance conduit and the second liquid nitrogen storage tank regulation valve
Put the liquid nitrogen that described recovery is provided.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described control fills
It is set to DCS or PLC control system.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described from supercharging
Carburator is connected with described liquid nitrogen equipment also by conveyance conduit and electromagnetic valve, to increase in described liquid nitrogen equipment
Air pressure.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described liquid nitrogen work
Making to be mounted on device, the first liquid nitrogen storage tank and the second liquid nitrogen storage tank temperature sensor, described temperature sensor is ultralow temperature
Temperature sensor.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described liquid nitrogen work
Making to be mounted on device, the first liquid nitrogen storage tank and the second liquid nitrogen storage tank pressure transducer, described pressure transducer is ultralow temperature
Pressure transducer.
Liquid nitrogen automatic recycling device in neon helium separation process the most according to claim 1, it is characterised in that described first
Being mounted on liquidometer on liquid nitrogen storage tank and the second liquid nitrogen storage tank, described liquid level is calculated as radar level gauge or capacitance level gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620607345.8U CN205842203U (en) | 2016-06-20 | 2016-06-20 | Liquid nitrogen automatic recycling device in a kind of neon helium separation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620607345.8U CN205842203U (en) | 2016-06-20 | 2016-06-20 | Liquid nitrogen automatic recycling device in a kind of neon helium separation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205842203U true CN205842203U (en) | 2016-12-28 |
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ID=58153433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620607345.8U Active CN205842203U (en) | 2016-06-20 | 2016-06-20 | Liquid nitrogen automatic recycling device in a kind of neon helium separation process |
Country Status (1)
| Country | Link |
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| CN (1) | CN205842203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953071A (en) * | 2016-06-20 | 2016-09-21 | 上海启元空分技术发展股份有限公司 | Device and method for automatically recovering liquid nitrogen in neon and helium separation process |
| CN109357730A (en) * | 2018-10-23 | 2019-02-19 | 西南交通大学 | A kind of liquid level detection system based on Electromagnetic Wave Method |
-
2016
- 2016-06-20 CN CN201620607345.8U patent/CN205842203U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953071A (en) * | 2016-06-20 | 2016-09-21 | 上海启元空分技术发展股份有限公司 | Device and method for automatically recovering liquid nitrogen in neon and helium separation process |
| CN109357730A (en) * | 2018-10-23 | 2019-02-19 | 西南交通大学 | A kind of liquid level detection system based on Electromagnetic Wave Method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210624 Address after: 201800 rooms 202 and 204, building 3, 150 Heyu Road, Jiading District, Shanghai Patentee after: SHANGHAI QIYUAN GAS DEVELOPMENT Co.,Ltd. Address before: 201800 150 Heyu Road, Jiading District, Shanghai Patentee before: SHANGHAI QIYUAN AIR SEPARATE TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |