CN204057968U - A kind of helium recovery purifying plant - Google Patents
A kind of helium recovery purifying plant Download PDFInfo
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- CN204057968U CN204057968U CN201420463835.6U CN201420463835U CN204057968U CN 204057968 U CN204057968 U CN 204057968U CN 201420463835 U CN201420463835 U CN 201420463835U CN 204057968 U CN204057968 U CN 204057968U
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Abstract
The utility model provides a kind of helium recovery purifying plant, and this device comprises: strainer; Chemisorption apparatus; Proximate analysis device; Add gas tank; Well heater; Catalysis system; Water cooler; First purification system; Raw helium water cooler; Rectifying tower; Second purification system; And helium storage tank.Adopt helium recovery purifying plant of the present utility model, can be used in reclaiming the industrial gaseous waste containing helium, the purity of helium is improved, also can go deep into purification and obtain pure helium, high-pure helium and ultrapure helium product.Relative to prior art, cost is lower, environment-friendly high-efficiency and the wider advantage of the scope of application to adopt helium recovery purifying plant of the present utility model to have.
Description
Technical field
The utility model relates to a kind of device reclaiming purification helium and prepare high purity helium product from industrial exhaust gas.
Background technology
Helium is colorless and odorless, non-combustible gas, and the content in air is about 5.2/1000000ths.The complete torpescence of chemical property, is not combined with other element or compound under usual state.
Helium is widely used in the fields such as such as military project, scientific research, petrochemical industry, refrigeration, medical treatment, semi-conductor, pipeline leak detection, superconducting experiment, metal manufacture, deep sea diving, precision welding, O-E Products production.Its main application has: the lower boiling utilizing helium-268.9 DEG C, and liquid helium may be used for very low temperature cooling; In superconductor applications extensively concerned in the fields such as aerotrain, helium is indispensable; In addition, due to chemical property torpescence and be lighter than the features such as air, helium is usually used in the insufflation gas in airship or advertising balloon, and this purposes is also well-known; In the breathing mixture body in ocean exploitation field, and in the purposes of the superconducting electromagnet cooling of the magnetic resonance imaging device of medical field, helium is all widely used; Helium also can be used as the protection gas of the metal solder such as leak-checking agent and magnesium, zirconium, aluminium, titanium of high-vacuum installation, the nuclear reactor, spaceship etc.; Rocket, spaceship are used as the gas under pressure of liquid propellant such as conveying liquid hydrogen, liquid oxygen etc.; Also be used as the clean-out system of reactor, the carrier gas of gas chromatographic analysis analysis, balloon inflation, the electric-arc welding filling gas protecting gas, diving gas mixture and gas thermometer; In addition due to good, the non-flammable feature of helium permeability, it is also applied to vacuum leak hunting industry, as helium mass spectrometer leak detector etc.
Helium can be separated extraction in theory from air, but because of its content excessive rarefied, industrial being about the Sweet natural gas of 0.5% from helium content is separated, refining obtains helium.But owing to being separated from Sweet natural gas, refining complex process, the cost obtaining helium be higher, is therefore difficult to be widely used.On the other hand, helium to make in Application Areas final all along with industrial gaseous waste is discharged together, causes a large amount of wastings of resources, does not meet the energy-conserving and environment-protective demand that people are growing.But at present, although there are some helium recovery system to reclaim helium, after reclaiming, the purity of helium cannot ensure.Helium after recovery also needs to carry out purifying and just can reuse, and the purifying of helium also bothers very much, and cost is higher.
Therefore, do not have simple, the lower-cost helium recovery purifying plant of a kind of structure in prior art, from the gas recovery of industrial and mining enterprises' discharge and purification helium, highly purified helium product can be obtained.
Summary of the invention
In order to overcome the defect of prior art, the purpose of this utility model is to provide the helium recovery purifying plant that a kind of structure is simple, cost is lower, can prepare high purity helium product.
For achieving the above object, the utility model provides a kind of helium recovery purifying plant, it is characterized in that, comprises successively:
Carry out raw helium gas filtering the strainer removing the granule foreigns such as oil and dust;
For removing the chemisorption apparatus of the poisonous and harmful corrosive impurity in raw helium gas;
To the proximate analysis device that all components in the raw helium gas after filtration is analyzed;
Gas tank is added for what add oxygen in the raw helium gas after filtering;
To the well heater that raw helium gas heats;
The catalysis system that catalysis makes the impurity such as carbon monoxide, hydro carbons, hydrogen wherein and oxygen generation redox reaction is carried out to the raw helium gas after heating;
For the water cooler that the raw helium gas after catalysis is carried out cooling;
For cooled raw helium gas being carried out the first purification system of dry and adsorption treatment;
For the raw helium water cooler cooled the raw helium gas through purification;
For carrying out the rectifying tower of rectifying to cooled raw helium gas;
For carrying out the second purification system of cryogenic absorption to the raw helium gas through rectifying;
For storing the helium storage tank of the helium product that described second low temperature purification system exports.
Preferably, described helium recovery purifying plant also comprises for carrying out preheating to through adding the raw helium gas after oxygen and the raw helium gas after catalysis system catalysis is carried out to the heat recovery system of precooling.
In one embodiment, described heat recovery system is interchanger, described interchanger comprises heat passage and cold flow passage, add in the transport pipe between gas tank and described well heater described in described heat passage is connected to, described cold flow expanding channels is in the transport pipe of described catalysis system and described water cooler.
Wherein, described first purification system and described second purification system are all the continuous type purification systems of circulation be made up of an electric heater and multiple absorbing cylinder.
Owing to adopting technique scheme, adopt helium recovery purifying plant of the present utility model, can using discharge from any industrial and mining enterprises containing the waste gas of helium as raw helium gas, through steps such as filtration, chemisorption, distribution, heating, catalysis, cooling, primary purification, liquid nitrogen washing and secondary-cleaneds, helium purity is improved, even can go deep into pure helium, high-pure helium and ultrapure helium product (helium gas volume concentrations >=99.9999%) that purification obtains meeting in National Standard of the People's Republic of China GB/T4844-2011 " pure helium, high-pure helium, ultrapure helium ".Helium recovery purifying plant of the present utility model is applicable to helium gas volume concentrations and is 1% to 99% but the recovery purification being not limited thereto the raw helium gas of volume concentration range, and raw helium gas can have pressure also can not have pressure, and range of application is wider.Compared to prior art, structure is simple, cost is lower, environment-friendly high-efficiency and the wider advantage of the scope of application to adopt device of the present utility model to have.
Accompanying drawing explanation
Fig. 1 is the process flow sheet adopting the utility model to carry out helium recovery purification; Fig. 2 is the structural representation of helium recovery purifying plant of the present utility model.
In accompanying drawing: 1-strainer; 2-chemisorption apparatus; 3-adds gas tank; 4-interchanger; 5-electric heater; 6-catalysis cylinder; 7-water cooler; 8-first absorbing cylinder; 9-rectifying tower; 10-raw helium water cooler; 11-second absorbing cylinder; 12-helium storage tank, the electric heater of 13 first purification systems, the electric heater of 14 second purification systems.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Refer to Fig. 1, helium recovery purifying plant of the present utility model comprises successively: carry out raw helium gas filtering the strainer 1 removing the granule foreigns such as oil and dust; For removing the chemisorption apparatus 2 of the poisonous and harmful corrosive impurity in raw helium gas; To the proximate analysis device that all components in the raw helium gas after filtration is analyzed, be chromatographic instrument (not shown) in the present embodiment, it is arranged on chemisorption apparatus 2 and adds on the transport pipe between gas tank 3; Gas tank 3 is added for what add oxygen in the raw helium gas after filtering; Raw helium gas is carried out to the interchanger 4 of pre-warmed heat recuperation, raw helium gas is carried out to the electric heater 5 of second-heating; Carry out to the raw helium gas after heating the catalysis system that catalysis makes the impurity such as carbon monoxide, hydro carbons, hydrogen wherein and oxygen generation redox reaction, this catalysis system is catalysis cylinder 6; Raw helium gas after catalysis carries out pre-cooled heat recovery system, raw helium gas is carried out to the water cooler 7 of cooling twice; For cooled raw helium gas being carried out the first purification system of dry and adsorption treatment, in the present embodiment, this first purification system is the system that the circulation be made up of two the first absorbing cylinders 8 can be carried out purifying continuously; For the raw helium water cooler 10 cooled the raw helium gas through primary purification; For carrying out the rectifying tower 9 of rectifying to cooled raw helium gas; For carrying out the second purification system of cryogenic absorption process to the raw helium gas through rectifying, in the present embodiment, this second purification system is the circulating purification system be made up of two the second absorbing cylinders 11; For storing the helium storage tank 12 of the product helium that described second purification system exports.
In the present embodiment, described heat recovery system is interchanger 4, interchanger 4 comprises heat passage and cold flow passage, and described heat passage is connected to catalysis cylinder 6 with the transport pipe of water cooler 7, and described cold flow expanding channels is adding in the transport pipe between gas tank 3 and electric heater 5.
Adopt helium recovery purifying plant of the present utility model to carry out reclaiming the technique of purifying to the helium in industrial gaseous waste to comprise the following steps:
Filter
Industrial discharged waste gas containing helium is collected and pressurized storage, then the raw helium gas after pressurization is filtered through strainer 1, by removing the granule foreigns such as oil, dust after the strainer of precision.
Chemisorption
After removing the granule foreign such as oil, dust, enter chemisorption apparatus 2, carry out removing poisonous and harmful corrosive impurity, as carbide, muriate and arsenide etc.
Distribution
Raw helium gas after filtration is analyzed all components in gas through chromatographic instrument, then adds suitable oxygen carry out distribution by adding gas tank 3.For ensureing safety and prevent catalysis overheated, oxygenation distribution can aerating several times and repeatedly catalysis carry out, ensure that each catalytic temperature is all in safety range.
Heating
Raw helium gas after completing distribution carries out heat exchange through the cold flow passage of interchanger 4 with the high-temperature gas going out catalysis cylinder, reach certain preheating temperature, the heating load of well heater below can be reduced like this, thus reduce the power consumption of well heater, raw helium gas after preheating is through electric heater 5 second-heating, and raw helium gas raises gradually through preheating and second-heating temperature.
Catalysis
The raw helium gas being heated to certain temperature is carried out catalytic treatment through catalysis cylinder 6.Carbon monoxide after catalysis in raw helium gas, carbonic acid gas, hydrogen, hydrocarbon gas and oxygen generation redox reaction generate water and carbonic acid gas.
Cooling
Raw helium gas after catalysis is carried out precooling through the heat passage of interchanger 4, and the object of precooling is water cooler 7 load after reduction, reduces costs.Raw helium gas after precooling is again through supercooler 7 cooling twice, and raw helium gas reduces gradually through pre-cold-peace cooling twice temperature.
Primary purification
The raw helium gas being cooled to certain temperature is carried out primary purification process through the primary purification system be made up of an electric heater 13 and one or more first absorbing cylinder 8.Primary purification process mainly carries out drying and decarburization absorption to raw helium gas, the water in removing raw helium gas and carbonic acid gas.It is add Thermal desorption for saturated absorbing cylinder that first purification system is provided with electric heater, so just makes absorbing cylinder can constantly non-stop run.
Cooling
Raw helium gas after primary purification is carried out degree of depth cooling by raw helium water cooler 10, reaches extremely low temperature.
Rectifying
Enter rectifying tower 9 by being cooled to the raw helium gas of specified temperature and carry out rectifying, by high boiling point gaseous impurities, the gases such as such as micro CO, argon gas, nitrogen are separated by low temperature fractionation, to improve the concentrations of helium in gas.Rectifying tower 9 has helium entrance, helium outlet, liquid nitrogen entrance and liquid nitrogen fraction output channel.Raw helium water cooler 10 adopts an interchanger to carry out heat exchange to the liquid nitrogen fraction output channel of rectifying tower 9 and the pipeline of input helium, thus is input to after thick helium gas cooling in rectifying tower.
Secondary-cleaned
The helium that concentration after rectifying improves is entered the second purification system be made up of an electric heater 14 and one or more second absorbing cylinder 11 and carries out secondary-cleaned process, after the secondary-cleaneds such as cryogenic absorption denitrogenation, obtain highly purified helium product, meet pure helium, high-pure helium and ultrapure helium product in GB/T4844-2011 " pure helium, high-pure helium and ultrapure helium ".It is add Thermal desorption for saturated absorbing cylinder that second purification system is provided with electric heater, so just makes cryogenic absorption cylinder can constantly non-stop run.
Claims (4)
1. a helium recovery purifying plant, is characterized in that, comprises successively:
Carry out raw helium gas filtering the strainer removing the granule foreigns such as oil and dust;
Raw helium gas is carried out to the device of chemisorption;
To the proximate analysis device that all components in the raw helium gas after filtration is analyzed;
Gas tank is added for what add oxygen in the raw helium gas after filtering;
To the well heater that raw helium gas heats;
The catalysis system that catalysis makes the impurity such as carbon monoxide, hydro carbons, hydrogen wherein and oxygen generation redox reaction is carried out to the raw helium gas after heating;
For the water cooler that the raw helium gas after catalysis is carried out cooling;
For cooled raw helium gas being carried out the first purification system of cryodrying and adsorption treatment;
For the raw helium water cooler cooled the raw helium gas through purification;
For carrying out the rectifying tower of low temperature fractionation to cooled raw helium gas;
For again carrying out the second purification system of cryogenic absorption to the raw helium gas through liquid nitrogen washing;
For storing the helium storage tank of the helium product that described second purification system exports.
2. a kind of helium recovery purifying plant according to claim 1, is characterized in that: also comprise for carrying out preheating to through adding the raw helium gas after oxygen and the raw helium gas after catalysis system catalysis is carried out to the heat recovery system of precooling.
3. a kind of helium recovery purifying plant according to claim 2, it is characterized in that: described heat recovery system is interchanger, described interchanger comprises heat passage and cold flow passage, add in the transport pipe between gas tank and described well heater described in described heat passage is connected to, described cold flow expanding channels is in the transport pipe of described catalysis system and described water cooler.
4. a kind of helium recovery purifying plant according to claim 2, is characterized in that: described first purification system and described second purification system are all the continuous type purification systems of circulation be made up of an electric heater and multiple absorbing cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463835.6U CN204057968U (en) | 2014-08-15 | 2014-08-15 | A kind of helium recovery purifying plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463835.6U CN204057968U (en) | 2014-08-15 | 2014-08-15 | A kind of helium recovery purifying plant |
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| CN204057968U true CN204057968U (en) | 2014-12-31 |
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| CN201420463835.6U Withdrawn - After Issue CN204057968U (en) | 2014-08-15 | 2014-08-15 | A kind of helium recovery purifying plant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176717A (en) * | 2014-08-15 | 2014-12-03 | 苏州市兴鲁空分设备科技发展有限公司 | Method and device for recycling and purifying helium gas |
| CN106517117B (en) * | 2016-12-14 | 2018-06-26 | 江苏兆胜特种空调有限公司 | A kind of helium recovery and purification equipment |
| CN114931840A (en) * | 2022-06-02 | 2022-08-23 | 散裂中子源科学中心 | Helium three-gas purification system |
-
2014
- 2014-08-15 CN CN201420463835.6U patent/CN204057968U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176717A (en) * | 2014-08-15 | 2014-12-03 | 苏州市兴鲁空分设备科技发展有限公司 | Method and device for recycling and purifying helium gas |
| CN104176717B (en) * | 2014-08-15 | 2016-09-07 | 苏州市兴鲁空分设备科技发展有限公司 | A kind of helium recovery method of purification and device |
| CN106517117B (en) * | 2016-12-14 | 2018-06-26 | 江苏兆胜特种空调有限公司 | A kind of helium recovery and purification equipment |
| CN114931840A (en) * | 2022-06-02 | 2022-08-23 | 散裂中子源科学中心 | Helium three-gas purification system |
| CN114931840B (en) * | 2022-06-02 | 2024-02-13 | 散裂中子源科学中心 | Helium three-gas purifying system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141231 Effective date of abandoning: 20160907 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |