CN109351172A - A kind of preform tail gas collection system - Google Patents
A kind of preform tail gas collection system Download PDFInfo
- Publication number
- CN109351172A CN109351172A CN201811534308.9A CN201811534308A CN109351172A CN 109351172 A CN109351172 A CN 109351172A CN 201811534308 A CN201811534308 A CN 201811534308A CN 109351172 A CN109351172 A CN 109351172A
- Authority
- CN
- China
- Prior art keywords
- tail gas
- cushion chamber
- collection system
- pressure measuring
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000460 chlorine Substances 0.000 claims abstract description 31
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 31
- 238000005245 sintering Methods 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 59
- 239000001307 helium Substances 0.000 abstract description 23
- 229910052734 helium Inorganic materials 0.000 abstract description 23
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/685—Halogens or halogen compounds by treating the gases with solids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B23/00—Noble gases; Compounds thereof
- C01B23/001—Purification or separation processes of noble gases
- C01B23/0036—Physical processing only
- C01B23/0052—Physical processing only by adsorption in solids
- C01B23/0057—Physical processing only by adsorption in solids characterised by the adsorbent
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0029—Obtaining noble gases
- C01B2210/0031—Helium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0098—Other impurities
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of preform tail gas collection systems, belong to light manufacturing technology field, including main line and pressure measuring piece, flow direction on main line along tail gas is disposed with flow controller, the first cushion chamber, chlorine remover, the second cushion chamber, regulating valve, air-supply assembly and concentration detector, and main line is provided with flow controller one end and is connected to prefabricated rods sintering furnace；There are two pressure measuring piece is set, wherein a pressure measuring piece is set on the first cushion chamber, and it is electrically connected to regulating valve, another pressure measuring piece is set on the second cushion chamber, and is electrically connected to air-supply assembly.Light prefabricated rods tail gas collection system proposed by the present invention, by chlorine remover by chlorine remove, avoid the storage or processing equipment of the subsequent tail gas of chlorine corrosion.By setting the range of flow of flow controller according to the air inflow of helium and chlorine, and then the amount for entering the air of prefabricated rods sintering furnace is controlled, avoids the air capacity in tail gas excessive and concentrations of helium is reduced.
Description
Technical field
The present invention relates to optic fibre manufacturing technology field more particularly to a kind of preform tail gas collection systems.
Background technique
Optical fiber production manufacture each technique in need to use a large amount of helium, especially preform production and
Using helium as cooling and protectiveness atmosphere gas in drawing optical fibers technique, since helium is rare gas, valence in nature
Lattice are expensive, and the use cost of helium accounts for 25% or more of manufacture preform cost, it is therefore desirable to be recycled again to helium
It utilizes.
Currently, preform is sintered in optical fiber sintering furnace, due to the particularity of optical fiber sintering furnace, in sintering
It can be passed through helium and chlorine, chlorine has strong corrosive, can corrode the storage or processing equipment of subsequent tail gas, and agglomerating plant
It is communicated with atmosphere, a large amount of air can be contained by being sintered in tail gas, so that the concentration of helium reduces in tail gas, be not easy to collect.
Summary of the invention
The purpose of the present invention is to provide a kind of preform tail gas collection systems, realize the chlorine in removal tail gas,
It avoids the amount of air in tail gas excessive simultaneously, reduces the concentration of helium.
As above design, the technical scheme adopted by the invention is that:
A kind of preform tail gas collection system, comprising:
Main line is disposed with flow controller, the first cushion chamber, chlorine remover, along the flow direction of tail gas thereon
Two cushion chambers, regulating valve, air-supply assembly and concentration detector, and the main line is provided with flow controller one end connection
In prefabricated rods sintering furnace；
Pressure measuring piece, if there are two, wherein a pressure measuring piece is set on first cushion chamber, and it is electrically connected to described
Regulating valve, another pressure measuring piece is set on second cushion chamber, and is electrically connected to the air-supply assembly.
Further, further include two bye-passes, two bye-passes be all connected to the main line be provided with it is described
One end of concentration detector.
Further, wherein being provided with first switch part and gas storage packet on a bye-pass, on another bye-pass
It is provided with second switch part.
Further, the first switch part and the second switch part are pneumatic operated valve.
It further, further include controller, the controller is electrically connected in the flow controller, regulating valve, send
Wind component, concentration detector and two pressure measuring pieces.
It further, further include third switch member, the third switch member is set on the main line, and is located at described
Between prefabricated rods sintering furnace and the flow controller.
Further, the chlorine remover includes cavity, and dry adsorption agent is provided in the cavity.
Further, the air-supply assembly is blower.
The invention has the benefit that
Light prefabricated rods tail gas collection system proposed by the present invention can be by the chlorine in tail gas by the way that chlorine remover is arranged
Removal, avoids the storage or processing equipment of the subsequent tail gas of chlorine corrosion.By the way that flow controller is arranged, according to helium and chlorine
Air inflow set the range of flow of flow controller, and then control the amount for the air for entering prefabricated rods sintering furnace, because
As soon as when the timing of the range of flow of flow controller, the amount of chlorine and helium also a timing can limit entrance air amount,
And then it avoids the air capacity in tail gas excessive and concentrations of helium is reduced.
Detailed description of the invention
Fig. 1 is the schematic diagram of preform tail gas collection system provided by the invention.
In figure:
1, main line；11, third switch member；12, flow controller；13, the first cushion chamber；14, chlorine remover；15, second
Cushion chamber；16, regulating valve；17, air-supply assembly；18, concentration detector；191, the first pressure measuring piece；192, the second pressure measuring piece；
2, the first bye-pass；21, first switch part；22, gas storage packet；
3, the second bye-pass；31, second switch part；
4, prefabricated rods sintering furnace.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
In conjunction with attached drawing and pass through specific embodiment to further illustrate the technical scheme of the present invention.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing and it is not all.
Fig. 1 is the schematic diagram of preform tail gas collection system in the present embodiment.As shown in Figure 1, the present embodiment provides
A kind of preform tail gas collection system, including main line 1, pressure measuring piece and controller, main line 1 and pressure measuring piece are by resistance to
The material of chlorine corrosion is made, such as nickel-base alloy, engineering plastics etc..
Wherein, on main line 1 along the direction of the flowing of tail gas be disposed with third switch member 11, flow controller 12,
First cushion chamber 13, chlorine remover 14, the second cushion chamber 15, regulating valve 16, air-supply assembly 17 and concentration detector 18, and main line
1 one end for being provided with third switch member 11 is connected to the offgas outlet of prefabricated rods sintering furnace 4, and in the present embodiment, third is opened
Pass part 11 is pneumatic operated valve, and flow controller 12 is flowmeter, and regulating valve 16 is ratio adjusting valve, and air-supply assembly 17 is blower, dense
Degree detector 18 is concentrations of helium instrument, and certainly in other embodiments, third switch member 11 can also be the structures such as shut-off valve, dense
Spending detector 18 can also be the structures such as gas sensor.
There are two pressure measuring piece is set, respectively the first pressure measuring piece 191 and the second pressure measuring piece 192, the first pressure measuring piece 191 are set to
On first cushion chamber 13, the second pressure measuring piece 192 is set on the second cushion chamber 15, in the present embodiment, 191 He of the first pressure measuring piece
Second pressure measuring piece 192 is pressure gauge.Controller (not shown) is electrically connected to flow controller 12, regulating valve 16, air-supply
Organize 17, Concentration Testing 18, the first pressure measuring piece 192 and the second pressure measuring piece 192.
Under the action of blower, tail gas is flowed along main line 1, and chlorine when by chlorine remover 14 in tail gas is gone
It removes.Above-mentioned chlorine remover 14 includes cavity, is provided with dry adsorption agent in cavity, and in the present embodiment, dry adsorption agent is alkali stone
Ash or soda lime can occur chemical reaction with chlorine and remove chlorine, avoid the storage of the subsequent tail gas of chlorine corrosion
Or processing equipment.
Moreover, set the range of flow of flow controller 12 according to the air inflow of helium and chlorine, so come control into
Enter the amount of the air to prefabricated rods sintering furnace 4, this is because when the timing of range of flow one of flow controller 12, due to chlorine and
The amount of helium is also certain, then can come limit entrance air amount, and then avoid air capacity in tail gas excessive and
So that concentrations of helium reduces.
When carrying out exhaust collection, 13 inner exhaust gas of the first cushion chamber is set according to the operating pressure in prefabricated rods sintering furnace 4
Pressure limit negative pressure state is in the first cushion chamber 13, when the first pressure measuring piece 191 detects first in the present embodiment
When the absolute value of 13 inner exhaust gas pressure of cushion chamber is greater than the maximum value of pressure in the pressure limit of setting, subtracted by controller
The aperture of small scale regulating valve slows down the flowing velocity of tail gas；When the first pressure measuring piece 191 detects the pressure in the first cushion chamber 13
When the absolute value of power is less than the least absolute value of pressure in the pressure limit of setting, pass through opening for controller scaling up regulating valve
Degree, increases the flowing velocity of tail gas.Make 13 inner exhaust gas of the first cushion chamber by the first manometric module 191 and ratio adjusting valve
Pressure maintains in a certain range, controls the tube pressure in prefabricated rods sintering furnace 4 with this, guarantees the preform tail
Gas collection system will not influence the pressure in prefabricated rods sintering furnace 4, and then avoid damaging prefabricated rods sintering furnace 4.
In addition, the effect of the second cushion chamber 15 is the pressure stablized in the preform tail gas collection system, according to reality
Border needs to set the pressure limit of 15 inner exhaust gas of the second cushion chamber.In the present embodiment, the second cushion chamber 15 is similarly in negative pressure
State, when the second pressure measuring piece 192 detects that the absolute value of 15 inner exhaust gas pressure of the second cushion chamber is greater than in the pressure limit of setting
When the maximum value of pressure, reduces the frequency of blower by controller, slow down the flowing velocity of tail gas；When the second pressure measuring piece
192 detect the pressure in the second cushion chamber 15 absolute value be less than setting pressure limit in pressure least absolute value when,
The frequency for increasing blower by controller, increases the flowing velocity of tail gas.Pass through the second manometric module 192 and blower collective effect
So that the second cushion chamber 15 is maintained in certain pressure limit, so that the preform tail gas collection system maintains
In certain pressure limit.
In addition, the first pressure measuring piece 191 and ratio adjusting valve, the second pressure measuring piece 192 and blower collective effect, so that the optical fiber
Pressure in prefabricated rods tail gas collection system is stablized, and does not influence the pressure in prefabricated rods sintering furnace 4, guarantees preform
Sintering process is normally carried out.
As shown in Figure 1, the preform tail gas collection system further includes two bye-passes, two bye-passes are all connected to
Main line 1 is provided with one end of concentration detector 18.Two bye-passes are respectively designated as the first bye-pass 2 and the second bye-pass
3.Wherein, it is provided with first switch part 21 and gas storage packet 22 on the first bye-pass 2, is provided with second switch on the second bye-pass 3
Part 31.In the present embodiment, first switch part 21 and second switch part 31 are pneumatic operated valve, by solenoid valve control, and electromagnetism
Valve is connected to controller.
When carrying out exhaust collection, when concentration detector 18 detects the concentration of helium less than preset value, controller control
First switch part 21 processed is closed, and controls the opening of second switch part 31, and tail gas is discharged to exhaust treatment system and is handled；When
When concentration detector 18 detects that the concentration of helium is more than or equal to preset value, controller controls second switch part 31 and closes, and the
One switch member 21 is opened, and by exhaust collection into gas storage packet 22, is then carried out the extraction of helium by tail gas treatment device and is mentioned
Pure, wherein the preset value of concentrations of helium is configured according to actual needs.
The course of work of the tail gas collection system to the preform is described in detail below.
Controller controls third switch member 11, blower and second switch part 31 are opened, the tail gas that prefabricated rods sintering generates according to
It is secondary through third switch member 11, flow controller 12, the first cushion chamber 13, chlorine remover 14, the second cushion chamber 15, ratio adjusting valve,
Blower and concentration detector 18, chlorine remover 14 remove the chlorine in tail gas, and in 18 real-time monitoring tail gas of concentration detector
The concentration of helium, when the concentration of helium is more than or equal to preset value, controller closes second switch part 31, opens first switch part
21, tail gas enters in gas storage packet 22 through first switch part 21.
In the process, the amount of air in tail gas is controlled by setting the range of flow of flow controller 12.Pass through
One manometric module 191 and ratio adjusting valve keep the pressure of 13 inner exhaust gas of the first cushion chamber in a certain range.Pass through
Two manometric modules 192 and blower keep the pressure of 15 inner exhaust gas of the second cushion chamber in a certain range.
Embodiment of above only elaborates that the basic principles and features of the invention, the present invention are not limited by above embodiment
System, without departing from the spirit and scope of the present invention, the invention also has various changes and changes, and these changes and changes are all
It falls into scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (8)
1. a kind of preform tail gas collection system, which is characterized in that including；
Main line (1) is disposed with flow controller (12) along the flow direction of tail gas thereon, the first cushion chamber (13), removes
Chlorine device (14), the second cushion chamber (15), regulating valve (16), air-supply assembly (17) and concentration detector (18), and the main line
(1) one end for being provided with the flow controller (12) is connected to prefabricated rods sintering furnace (4)；
Pressure measuring piece, if there are two, wherein a pressure measuring piece is set on first cushion chamber (13), and it is electrically connected to described
Regulating valve (16), another pressure measuring piece is set on second cushion chamber (15), and is electrically connected to the air-supply assembly
(17)。
2. preform tail gas collection system according to claim 1, which is characterized in that it further include two bye-passes,
Two bye-passes are all connected to one end that the main line (1) is provided with the concentration detector (18).
3. preform tail gas collection system according to claim 2, which is characterized in that wherein on a bye-pass
It is provided with first switch part (21) and gas storage packet (22), second switch part (31) are provided on another bye-pass.
4. preform tail gas collection system according to claim 3, which is characterized in that the first switch part (21)
It is pneumatic operated valve with the second switch part (31).
5. preform tail gas collection system according to claim 1, which is characterized in that it further include controller, it is described
Controller be electrically connected in the flow controller (12), regulating valve (16), air-supply assembly (17), concentration detector (18) and
Two pressure measuring pieces.
6. preform tail gas collection system according to claim 1, which is characterized in that further include third switch member
(11), the third switch member (11) is set on the main line (1), and is located at the prefabricated rods sintering furnace (4) and described
Between flow controller (12).
7. preform tail gas collection system according to claim 1, which is characterized in that the chlorine remover (14) includes
Cavity is provided with dry adsorption agent in the cavity.
8. preform tail gas collection system according to claim 1, which is characterized in that the air-supply assembly (17) is
Blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811534308.9A CN109351172A (en) | 2018-12-14 | 2018-12-14 | A kind of preform tail gas collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811534308.9A CN109351172A (en) | 2018-12-14 | 2018-12-14 | A kind of preform tail gas collection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109351172A true CN109351172A (en) | 2019-02-19 |
Family
ID=65329841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811534308.9A Pending CN109351172A (en) | 2018-12-14 | 2018-12-14 | A kind of preform tail gas collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109351172A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498401A (en) * | 2019-09-02 | 2019-11-26 | 北京中科富海低温科技有限公司 | Helium recovery purification device |
| CN110624321A (en) * | 2019-10-28 | 2019-12-31 | 苏州朗道节能技术有限公司 | A preceding processing apparatus for waste gas recovery purifies |
| CN112225448A (en) * | 2020-10-22 | 2021-01-15 | 江苏亨通光导新材料有限公司 | Helium-chlorine mixed gas circulation system for sintering optical fiber perform |
| CN114031288A (en) * | 2021-11-08 | 2022-02-11 | 苏州回能环保科技有限公司 | Device and method for collecting helium-containing waste gas discharged by optical fiber preform sintering furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377491A (en) * | 1992-12-11 | 1995-01-03 | Praxair Technology, Inc. | Coolant recovery process |
| CN206089041U (en) * | 2016-09-26 | 2017-04-12 | 湖北和远气体股份有限公司 | Steady pressure retrieves device of rich helium tail gas |
| CN106744749A (en) * | 2016-11-30 | 2017-05-31 | 富通集团（嘉善）通信技术有限公司 | For the helium online recycling Application way and device of drawing optical fibers system |
| CN206872677U (en) * | 2017-05-31 | 2018-01-12 | 江苏奥维信亨通光学科技有限公司 | A kind of preform sinters furnace pressure automatic control system |
| CN209302532U (en) * | 2018-12-14 | 2019-08-27 | 上海正帆科技股份有限公司 | A kind of preform tail gas collection system |
-
2018
- 2018-12-14 CN CN201811534308.9A patent/CN109351172A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377491A (en) * | 1992-12-11 | 1995-01-03 | Praxair Technology, Inc. | Coolant recovery process |
| CN206089041U (en) * | 2016-09-26 | 2017-04-12 | 湖北和远气体股份有限公司 | Steady pressure retrieves device of rich helium tail gas |
| CN106744749A (en) * | 2016-11-30 | 2017-05-31 | 富通集团（嘉善）通信技术有限公司 | For the helium online recycling Application way and device of drawing optical fibers system |
| CN206872677U (en) * | 2017-05-31 | 2018-01-12 | 江苏奥维信亨通光学科技有限公司 | A kind of preform sinters furnace pressure automatic control system |
| CN209302532U (en) * | 2018-12-14 | 2019-08-27 | 上海正帆科技股份有限公司 | A kind of preform tail gas collection system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498401A (en) * | 2019-09-02 | 2019-11-26 | 北京中科富海低温科技有限公司 | Helium recovery purification device |
| CN110498401B (en) * | 2019-09-02 | 2024-05-17 | 北京中科富海低温科技有限公司 | Helium recovery purifying device |
| CN110624321A (en) * | 2019-10-28 | 2019-12-31 | 苏州朗道节能技术有限公司 | A preceding processing apparatus for waste gas recovery purifies |
| CN112225448A (en) * | 2020-10-22 | 2021-01-15 | 江苏亨通光导新材料有限公司 | Helium-chlorine mixed gas circulation system for sintering optical fiber perform |
| CN114031288A (en) * | 2021-11-08 | 2022-02-11 | 苏州回能环保科技有限公司 | Device and method for collecting helium-containing waste gas discharged by optical fiber preform sintering furnace |
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