CN106744749A - For the helium online recycling Application way and device of drawing optical fibers system - Google Patents
For the helium online recycling Application way and device of drawing optical fibers system Download PDFInfo
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- CN106744749A CN106744749A CN201611083108.7A CN201611083108A CN106744749A CN 106744749 A CN106744749 A CN 106744749A CN 201611083108 A CN201611083108 A CN 201611083108A CN 106744749 A CN106744749 A CN 106744749A
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- helium
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- optical fibers
- hydrogen
- rich gas
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- 239000001307 helium Substances 0.000 title claims abstract description 190
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 190
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 190
- 239000013307 optical fiber Substances 0.000 title claims abstract description 55
- 238000004064 recycling Methods 0.000 title claims abstract description 30
- 238000000746 purification Methods 0.000 claims abstract description 80
- 239000007789 gas Substances 0.000 claims abstract description 67
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000001257 hydrogen Substances 0.000 claims abstract description 55
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 50
- 238000012681 fiber drawing Methods 0.000 claims abstract description 43
- 238000005057 refrigeration Methods 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims description 8
- 238000006298 dechlorination reaction Methods 0.000 claims description 6
- 238000007710 freezing Methods 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- 238000005491 wire drawing Methods 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 241000370738 Chlorion Species 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Classifications
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- 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
-
- 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
- C01B2210/0001—Separation or purification processing
- C01B2210/0009—Physical processing
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses helium online recycling Application way and device for drawing optical fibers system, wherein method includes：The hydrogen-rich gas being collected into drawing optical fibers system are dried and filtered；Dry chlorine gas after filtering are carried out into preliminary purification to the first purity rubric；For the helium for reaching the first purity rubric, the cooling tube that a portion is recycled in drawing optical fibers system is reused, the helium of remainder carries out cryogenic refrigeration and purifies to the second purity rubric, and be recycled in the fiber drawing furnace of drawing optical fibers system and reuse.Requirement of the present invention for fiber drawing furnace and cooling tube in drawing optical fibers system to helium purity is different, and the helium of purification is conveyed and purified respectively, and the requirement for reducing equipment improves the utilization rate of helium simultaneously；Helium in fiber drawing furnace and cooling tube is reclaimed, the rate of recovery is improve, the production cost of optical fiber is reduced.
Description
Technical field
The present invention relates to drawing optical fibers field, more particularly, to the helium online recycling Application way of drawing optical fibers system
And device.
Background technology
Helium is a kind of inert gas, colourless under normal pressure and temperature, tasteless, nontoxic, non-combustible.It has molecular weight small, leads
Hot good the characteristics of.Be that graphite piece is not oxidized in protection stove in fibre drawing furnace, and furnace high-temperature can be effectively conducted into
Enter inside preform, typically in fiber drawing process, to a certain amount of helium is passed through in stove, general consumption is 35L/
Min or so.It is that the optical fiber just from fiber drawing furnace out is cooled down, typically below fiber drawing furnace in fiber drawing process
Optical fiber is cooled down using cooling tube, and the medium generally helium of heat exchange is carried out between cooling tube and optical fiber, it is general to use
It is 8L/min or so to measure.If not carrying out recycling to the helium in stove, can cause to waste, and then cause manufacturing cost
Improve.
The content of the invention
In order to solve problem of the prior art, the invention provides a kind of recovery method of helium, the helium that will can be purified
Gas is made full use of.
The technical scheme that the present invention takes is as follows：
A kind of helium online recycling Application way for drawing optical fibers system, including：
The hydrogen-rich gas being collected into drawing optical fibers system are dried and filtered；
Dry hydrogen-rich gas after by filtering carry out preliminary purification to the first purity rubric；
For the helium for reaching the first purity rubric, a portion is recycled in the cooling tube of drawing optical fibers system and is weighed
Newly use, the helium of remainder carries out cryogenic refrigeration and purifies to the second purity rubric, and is recycled to the drawing of drawing optical fibers system
Reused in silk stove.
Requirement for fiber drawing furnace and cooling tube in drawing optical fibers system to helium purity is different, and the helium of purification is carried out
Convey respectively and purify, the requirement for reducing equipment improves the utilization rate of helium simultaneously；To the helium in fiber drawing furnace and cooling tube
Reclaimed, improve the rate of recovery, reduced the production cost of optical fiber.
Optionally, the rich helium during the hydrogen-rich gas of collection are included from the hydrogen-rich gas in cooling tube and from fiber drawing furnace
Gas；After drying and filtration step, before preliminary purification steps, also including being removed to the hydrogen-rich gas from fiber drawing furnace
The step of chlorine.
Manufacture for preform in fiber drawing furnace causes the chlorion contained in helium, and targetedly dechlorinated step
Suddenly, so as to improve the helium purity of subsequent purification and reduce to the corrosion-damaged of equipment.
Optionally, purity analysis is carried out after being additionally included in the preliminary purification for carrying out hydrogen-rich gas, when helium purity is less than the
During one purity rubric, the step of repeating preliminary purification is carried out to gained helium, until helium purity reaches the first purity rubric；
Purity analysis is carried out after being additionally included in the cryogenic refrigeration purification for carrying out hydrogen-rich gas, when helium purity is pure less than second
Scale is punctual, the step of repeatedly cryogenic refrigeration is purified is carried out to gained helium, until helium purity reaches the second purity rubric.
By purity analysis and feedback, it is ensured that the helium after purification can reach the standard being recovered, it is to avoid waste.
Optionally, helium is conveyed from external complement when being additionally included in fiber drawing furnace and cooling tube loopback helium, makes loopback
Helium air pressure is maintained in default scope.
Using exterior line supplement conveying helium, the helium of loopback is set to be maintained at the state of pressure stability, and returned in the whole series
Receiving apparatus occur under abnormal conditions, and drawing optical fibers system can also normal work.
Optionally, before preliminary purification steps are carried out to hydrogen-rich gas, also including carrying out flow control to hydrogen-rich gas,
The step for making the flow of hydrogen-rich gas be in preset range.
Accordingly, the invention provides corresponding device, to realize the method for the present invention.One kind is used for drawing optical fibers system
Helium online recycling device, the drawing optical fibers system includes cooling tube and fiber drawing furnace, and helium online recycling device includes：
Helium collection device, for collecting the hydrogen-rich gas discharged in drawing optical fibers system；
Cooling device, for being cooled down to the hydrogen-rich gas being collected into；
Solid particulate filters device, for the hydrogen-rich gas being collected into be dried and filtered；
Preliminary purification device, by filtering after dry hydrogen-rich gas carry out preliminary purification to the first purity rubric；
First air accumulator, is connected with preliminary purification device, and the first purity rubric is purified to for storing preliminary purification device
Helium；
Connect the first air accumulator and cooling tube first time supplies pipeline, for by a portion helium in the first air accumulator
Gas is reused in being recycled to the cooling tube of drawing optical fibers system；
Cryogenic refrigeration purifying plant, second is purified to for the helium of the first air accumulator remainder to be carried out into cryogenic refrigeration
Purity rubric；
Second air accumulator, is connected with cryogenic refrigeration purifying plant, and second is purified to for storage depth freezing purifying plant
The helium of purity rubric；
Connect the second air accumulator and fiber drawing furnace second time supplies pipeline, for the helium of the second air accumulator to be recycled into wire drawing
Reused in stove.
Optionally, the helium collection device includes cooling tube collection assembly, fiber drawing furnace collection assembly and for producing
Negative pressure is collected the compressor of work；
The helium online recycling device also includes dechlorination device, and the dechlorination device was used for before preliminary purification to coming
Dechlorinated from the hydrogen-rich gas of fiber drawing furnace.
Optionally, also include：
Preliminary purification device downstream is arranged on for carrying out first purity point of purity analysis to the helium after preliminary purification
Analyzer；
The first feedback pipe of preliminary purification device is communicated to, for being less than the first purity mark when the helium purity for analyzing
On time, gained helium is fed back into preliminary purification device, carries out repeating preliminary purification until helium purity by preliminary purification device
Reach the first purity rubric；
Helium after cryogenic refrigeration purifying plant downstream is arranged on for being purified to cryogenic refrigeration carries out the of purity analysis
Two purity analysis instrument；
The second feedback pipe of cryogenic refrigeration purifying plant is communicated to, it is pure less than second for working as the helium purity for analyzing
Scale is punctual, and gained helium is fed back into cryogenic refrigeration purifying plant, is carried out repeating cryogenic refrigeration by cryogenic refrigeration purifying plant
Purification is until helium purity reaches the second purity rubric.
Optionally, also including the mass flow controller located at preliminary purification device upstream, for entering to hydrogen-rich gas
Flow control is carried out to hydrogen-rich gas before row preliminary purification, the flow of hydrogen-rich gas is in preset range.
Optionally, also including outside helium supply air line, the outside helium supply air line respectively with the first air accumulator and
Second air accumulator is connected, for corresponding air accumulator supplement conveying helium, keeping the helium air pressure of correspondence air accumulator loopback
In default scope.
Being connected with fiber drawing furnace described in the application, refers to being connected with fiber drawing furnace air supply system, is connected with cooling tube, refers to
It is to be connected with cooling tube air supply system.
It is an advantage of the current invention that based on the requirement of fiber drawing furnace and cooling tube to helium purity in drawing optical fibers system not
Together, the helium of purification is conveyed and is purified respectively, the utilization rate of helium is improved while reducing equipment requirement；To wire drawing
Helium in stove and cooling tube is reclaimed, and improves the rate of recovery, reduces the production cost of optical fiber.
Brief description of the drawings
Fig. 1 is the schematic diagram of the helium online recycling device that one embodiment of the invention is used for drawing optical fibers system；
Fig. 2 is the structural representation of the helium online recycling device that present example is used for drawing optical fibers system.
Reference is：
101st, pressure gauge；102nd, pressure regulating instrument；103rd, hand-operated valve；104th, fiber drawing furnace and fiber drawing furnace collection assembly；105th, cool down
Pipe and cooling tube collection assembly；106th, cooling device；107th, solid particulate matter filter；108th, dechlorination device；109th, quality
Flow controller；110th, the 3rd air accumulator；111st, compressor；112nd, accurate filter；113rd, dehumidifier；114th, the 3rd purity point
Analyzer；115th, preliminary purification device；116th, magnetic valve；117th, check valve；118th, cryogenic refrigeration purifying plant；119th, the second purity
Analyzer；120th, outside helium supply air line；121st, pipeline is supplied first time；122nd, pipeline is supplied second time；131st, the first air accumulator；
132nd, the second air accumulator；133rd, the first purity analysis instrument；134th, the first feedback pipe；135th, the second feedback pipe.
Specific embodiment
To make the present invention become apparent from understanding, more detailed explanation explanation is subject in conjunction with drawings and Examples.
A kind of helium online recycling Application way for drawing optical fibers system, including：
The hydrogen-rich gas being collected into drawing optical fibers system are dried and filtered；
Dry hydrogen-rich gas after by filtering carry out preliminary purification to the first purity rubric；
For the helium for reaching the first purity rubric, a portion is recycled in the cooling tube of drawing optical fibers system and is weighed
Newly use, the helium of remainder carries out cryogenic refrigeration and purifies to the second purity rubric, and is recycled to the drawing of drawing optical fibers system
Reused in silk stove.
In the present embodiment, the hydrogen-rich gas of collection are included from the hydrogen-rich gas in cooling tube and from fiber drawing furnace
Hydrogen-rich gas；After drying and filtration step, before preliminary purification steps, also including to the hydrogen-rich gas from fiber drawing furnace
The step of being dechlorinated.
In the present embodiment, online recycling Application way carries out purity after being additionally included in the preliminary purification for carrying out hydrogen-rich gas
Analysis, when helium purity is less than the first purity rubric, carries out the step of repeating preliminary purification, until helium is pure to gained helium
Degree reaches the first purity rubric；
Purity analysis is carried out after being additionally included in the cryogenic refrigeration purification for carrying out hydrogen-rich gas, when helium purity is pure less than second
Scale is punctual, the step of repeatedly cryogenic refrigeration is purified is carried out to gained helium, until helium purity reaches the second purity rubric.
In the present embodiment, helium is conveyed from external complement when being additionally included in fiber drawing furnace and cooling tube loopback helium, made
The helium air pressure of loopback is maintained in default scope.
In the present embodiment, before preliminary purification steps are carried out to hydrogen-rich gas, also including being flowed to hydrogen-rich gas
Amount control, the step for making the flow of hydrogen-rich gas be in preset range.
The present embodiment is also disclosed using the device of the above method, as shown in figure 1, being the helium for drawing optical fibers system
The schematic diagram of online recycling device, wherein arrow represent the flow direction of helium, and online recycling is drawn optical fiber respectively using device
The gas (hydrogen-rich gas) rich in helium is collected after the fiber drawing furnace of silk system and cooling tube use, there is provided collect power
It is compressor, wherein, the wire-drawing temperature of fiber drawing furnace is 2200 DEG C or so, and the helium temperature at its collection is 300 DEG C or so, to protect
Shield subsequent recovery equipment, the hydrogen-rich gas to collecting are cooled down accordingly, then collected hydrogen-rich gas are filtered, with
Silica and other particulate contaminants are filtered, wherein, the helium reclaimed in fibre drawing furnace, due to containing in preform
There is a certain amount of chlorion, it is necessary to which it is dechlorinated, with the pipeline for avoiding influence system follow-up and equipment pollution.Have passed through tentatively mistake
The hydrogen-rich gas of filter enter air accumulator, and are dried and filtering removal solid particulate matter impurity by further, by purity point
Analysis (helium purity now be 40%~60%) enters the preliminary purification device of helium, be analyzed herein mainly prevent because
For the system failure causes the concentrations of helium for extracting too low, or even there is no helium when extracting, so as to influence preliminary purification device
Operating efficiency.By the helium after preliminary purification, preliminary purification device downstream is carried out again and positioned at cryogenic refrigeration purifying plant
The purity analysis instrument of upstream is analyzed：As purity is less than the first purity rubric (present example is 95%), melt down again
Preliminary purification device is purified, if purity reaches the first purity rubric, into air accumulator.Due to no stone in cooling tube
Black part, its helium purity requirement is relatively low, as long as just can be so that the gas in air accumulator separates a part by connecting higher than 95%
Lead to cooling tube first time is supplied to cooling tube for pipeline；Because the helium consumption of cooling tube is less, the helium of remainder
Into cryogenic refrigeration purifying plant, the helium purified by cryogenic refrigeration carries out purity analysis by purity analysis instrument, if helium
Gas purity reaches the second purity rubric (present example is 99.999%), then into air accumulator, if not up to the second purity
Standard, will re-start cryogenic refrigeration and purify by feedback pipe, and the helium of the second purity rubric is reached in air accumulator by the
Fiber drawing furnace is fed into for pipeline two times.
Helium online recycling utilize during, its recycled in its entirety rate 70% or so, so, in use, also need
Want exterior line to supplement a certain amount of helium and enter system for drawing, to ensure to occur under abnormal conditions in a whole set of retracting device,
Drawing optical fibers system can also normal work.
As shown in Fig. 2 being the structural representation of the helium online recycling device for drawing optical fibers system, helium is returned online
Receiving apparatus include fiber drawing furnace collection system and cooling tube collection system, after two systems gather hydrogen-rich gas, are delivered to the
Cached in three air accumulators 110.Wherein, fiber drawing furnace collection system include the fiber drawing furnace that is sequentially connected and fiber drawing furnace collection assembly 104,
Cooling device 106, solid particulate filters device 107, dechlorination device 108 and mass flow controller 109, cooling tube collect system
System include the cooling tube that is sequentially connected and cooling tube collection assembly 105, cooling device 106, solid particulate filters device 107, with
And mass flow controller 109, wherein, the collection power of fiber drawing furnace collection system and cooling tube collection system is by compressor
111 provide, in the present embodiment, compressor 111It is arranged on the downstream of the 3rd air accumulator 110.
In the present embodiment, solid particulate matter filter is silica solid particulate contaminant filter.
In 3rd air accumulator 110 cache hydrogen-rich gas manually valve 103, pressure regulating instrument 102, accurate filter 112,
After the purity analysis instrument 114 of dehumidifier 113 and the 3rd, into preliminary purification device 115, manually valve 103, pressure regulating instrument
102 can control to enter the gas flow of preliminary purification device, and by accurate filter 112, dehumidifier 113 can be to rich helium
Body is filtered and dried again, and for purification is prepared, the 3rd purity analysis instrument 114 is mainly carried out to the gas before purification
Detection, prevents because the system failure causes the concentrations of helium for extracting too low, or even does not have helium when extracting, so as to influence preliminary
The operating efficiency of purifying plant.Preliminary purification device 115 by filtering after dry hydrogen-rich gas carry out preliminary purification to first
Purity rubric, being provided with preliminary purification device downstream carries out first purity point of purity analysis for the helium after to preliminary purification
Analyzer 133, and the first feedback pipe 134 of preliminary purification device is communicated to, when the helium that the first purity analysis instrument is analyzed
When purity is less than the first purity rubric, gained helium is fed back into preliminary purification device, carried out repeating just by preliminary purification device
Step purification is until helium purity reaches the first purity rubric.First air accumulator 131 is connected with preliminary purification device, for storing just
Step purifying plant is purified to the helium of the first purity rubric, and first time confession pipeline 121 connects the first air accumulator and cooling tube, is used for
A portion helium in first air accumulator 131 is recycled in cooling tube and is reused.Cryogenic refrigeration purifying plant 118 sets
Put in the downstream of the first air accumulator 131, second is purified to for the helium of the first air accumulator remainder to be carried out into cryogenic refrigeration
Purity rubric；Helium after the downstream of cryogenic refrigeration purifying plant is provided with for being purified to cryogenic refrigeration carries out purity analysis
Second purity analysis instrument 119, and the second feedback pipe 135 of cryogenic refrigeration purifying plant is communicated to, when the second purity analysis
When the helium purity that instrument is analyzed is less than the second purity rubric, gained helium is fed back into cryogenic refrigeration purifying plant, by depth
Freezing purifying plant carries out repeating preliminary purification until helium purity reaches the second purity rubric.Second air accumulator 132 and depth
Freezing purifying plant 118 is connected, and the helium of the second purity rubric, second time confession are purified to for storage depth freezing purifying plant
Pipeline 122 connects the second air accumulator 132 and cooling tube, makes again for the helium of the second air accumulator to be recycled in fiber drawing furnace
With.
In the present embodiment, preliminary purification and cryogenic refrigeration purifying plant can use existing mature technology, wherein, just
Step purifying plant can use membrane separation technique, and membrane separation technique cost is relatively low, and the helium purity after purification can reach 99%
Left and right.Cryogenic refrigeration purifying plant is purified using the low principle of helium gasification point, and the concentrations of helium after its purification reaches
More than 99.999%, it is different according to the low-temperature receiver that device is provided, and can be divided into liquid nitrogen purifying plant and refrigerator purifying plant two
Kind.
In the present embodiment, the overall recovery of drawing optical fibers system is 70% or so, so the use in order to ensure helium
Amount, device also includes outside helium supply air line 120, and pressure gauge 101, pressure regulating instrument is provided with outside helium supply air line 120
102 and hand-operated valve 103, outside helium supply air line is connected with the first air accumulator 131 and the second air accumulator 132 respectively, for
Corresponding air accumulator supplement conveying helium, makes the helium air pressure of correspondence air accumulator loopback be maintained in default scope.Yu Benshi
Apply in example, electricity is provided with the pipeline that outside helium supply air line 120 is connected with the first air accumulator 131 and the second air accumulator 132
Magnet valve 116 and check valve 117, wherein check valve are prevented from helium and are back to outside helium supply air line 120.
The helium online recycling device of the present embodiment by preliminary purification helium, its concentrations of helium reaches more than 95%,
Because the helium of cooling tube just can be with 95% using purity, the helium in the first air accumulator 131 can be cooled down with direct-furnish
Pipe.In the present embodiment, the pressure of the first air accumulator and the second air accumulator in 0.3Mpa or so, outside helium supply air line 120
The pressure at place is 0.8~1Mpa, and after the pressure regulator valve 102 on outside helium supply air line 120 is processed, it accesses the first gas storage
The pressure of tank and the second air accumulator is micro- less than 0.3Mpa (micro- pressure for being less than the first air accumulator and the second air accumulator), so, when
When pressure in first air accumulator or the second air accumulator is reduced, the helium in exterior line can enter corresponding air accumulator, so that
Ensure the pressure stability in the first air accumulator and the second air accumulator.
It is an advantage of the current invention that for the requirement of fiber drawing furnace and cooling tube to helium purity in drawing optical fibers system not
Together, the helium of purification is conveyed and is purified respectively, the requirement for reducing equipment is improved the utilization rate of helium simultaneously；To wire drawing
Helium in stove and cooling tube is reclaimed, and improves the rate of recovery；Manufacture for preform in fiber drawing furnace causes helium
The chlorion contained in gas, targetedly dechlorinated step, so as to improve the helium purity of subsequent purification；By purity point
Analysis and feedback, it is ensured that the helium after purification can reach the standard being recovered, it is to avoid waste；Supplemented using exterior line and conveyed
Helium, makes the helium of loopback be maintained at the state of pressure stability, prevents helium from returning, so as to ensure helium in drawing optical fibers system
Conveying, it is ensured that reclaim helium relatively high usage.
Claims (10)
1. a kind of helium online recycling Application way for drawing optical fibers system, it is characterised in that including：
The hydrogen-rich gas being collected into drawing optical fibers system are dried and filtered；
Dry hydrogen-rich gas after by filtering carry out preliminary purification to the first purity rubric；
For the helium for reaching the first purity rubric, a portion is recycled in the cooling tube of drawing optical fibers system to be made again
With the helium of remainder carries out cryogenic refrigeration and purifies to the second purity rubric, and is recycled to the fiber drawing furnace of drawing optical fibers system
In reuse.
2. the helium online recycling Application way of drawing optical fibers system is used for as claimed in claim 1, it is characterised in that collection
Hydrogen-rich gas are included from the hydrogen-rich gas in cooling tube and from the hydrogen-rich gas in fiber drawing furnace；In dry and filtration step
Afterwards, before preliminary purification steps, also including being dechlorinated to the hydrogen-rich gas from fiber drawing furnace the step of.
3. the helium online recycling Application way of drawing optical fibers system is used for as claimed in claim 1, it is characterised in that also included
Purity analysis is carried out after the preliminary purification for carrying out hydrogen-rich gas, when helium purity is less than the first purity rubric, to gained helium
Gas carries out the step of repeating preliminary purification, until helium purity reaches the first purity rubric；
Purity analysis is carried out after being additionally included in the cryogenic refrigeration purification for carrying out hydrogen-rich gas, when helium purity is less than the second purity mark
On time, the step of repeatedly cryogenic refrigeration is purified is carried out to gained helium, until helium purity reaches the second purity rubric.
4. the helium online recycling Application way of drawing optical fibers system is used for as claimed in claim 1, it is characterised in that also included
Helium is conveyed from external complement when to fiber drawing furnace and cooling tube loopback helium, the helium air pressure of loopback is maintained at default model
In enclosing.
5. the helium online recycling Application way of drawing optical fibers system is used for as claimed in claim 1, it is characterised in that to richness
Before helium gas carry out preliminary purification steps, also including carrying out flow control to hydrogen-rich gas, it is in the flow of hydrogen-rich gas
Step in preset range.
6. a kind of helium online recycling device for drawing optical fibers system, the drawing optical fibers system includes cooling tube and wire drawing
Stove, it is characterised in that helium online recycling device includes：
Helium collection device, for collecting the hydrogen-rich gas discharged in drawing optical fibers system；
Cooling device, for being cooled down to the hydrogen-rich gas being collected into；
Solid particulate filters device, for the hydrogen-rich gas being collected into be dried and filtered；
Preliminary purification device, by filtering after dry hydrogen-rich gas carry out preliminary purification to the first purity rubric；
First air accumulator, is connected with preliminary purification device, and the helium of the first purity rubric is purified to for storing preliminary purification device
Gas；
Connect the first air accumulator and cooling tube first time supplies pipeline, for a portion helium in the first air accumulator to be returned
Reused in the cooling tube for delivering to drawing optical fibers system；
Cryogenic refrigeration purifying plant, the second purity is purified to for the helium of the first air accumulator remainder to be carried out into cryogenic refrigeration
Standard；
Second air accumulator, is connected with cryogenic refrigeration purifying plant, and the second purity is purified to for storage depth freezing purifying plant
The helium of standard；
Connect the second air accumulator and fiber drawing furnace second time supplies pipeline, for the helium of the second air accumulator to be recycled in fiber drawing furnace
Reuse.
7. the helium online recycling device of drawing optical fibers system is used for as claimed in claim 6, it is characterised in that the helium is received
Acquisition means include cooling tube collection assembly, fiber drawing furnace collection assembly and for producing negative pressure to be collected the compressor of work；
The helium online recycling device also includes dechlorination device, and the dechlorination device was used for before preliminary purification to from drawing
The hydrogen-rich gas of silk stove are dechlorinated.
8. the helium online recycling device of drawing optical fibers system is used for as claimed in claim 6, it is characterised in that also included：
Preliminary purification device downstream is arranged on for carrying out the first purity analysis instrument of purity analysis to the helium after preliminary purification；
The first feedback pipe of preliminary purification device is communicated to, for being less than the first purity rubric when the helium purity for analyzing
When, gained helium is fed back into preliminary purification device, carry out repeating preliminary purification by preliminary purification device until helium purity reaches
To the first purity rubric；
It is arranged on cryogenic refrigeration purifying plant downstream pure for carrying out the second of purity analysis to the helium after cryogenic refrigeration purification
Degree analyzer；
The second feedback pipe of cryogenic refrigeration purifying plant is communicated to, for being less than the second purity mark when the helium purity for analyzing
On time, gained helium is fed back into cryogenic refrigeration purifying plant, is carried out repeating cryogenic refrigeration purification by cryogenic refrigeration purifying plant
Until helium purity reaches the second purity rubric.
9. the helium online recycling device of drawing optical fibers system is used for as claimed in claim 6, it is characterised in that also including being located at
The mass flow controller of preliminary purification device upstream, for being carried out to hydrogen-rich gas before preliminary purification is carried out to hydrogen-rich gas
Flow is controlled, and the flow of hydrogen-rich gas is in preset range.
10. the helium online recycling device of drawing optical fibers system is used for as claimed in claim 6, it is characterised in that also including outer
Portion's helium supply air line, the outside helium supply air line is connected with the first air accumulator and the second air accumulator respectively, for right
The air accumulator supplement conveying helium answered, makes the helium air pressure of correspondence air accumulator loopback be maintained in default scope.
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| CN109351172A (en) * | 2018-12-14 | 2019-02-19 | 上海正帆科技股份有限公司 | An optical fiber preform tail gas collection system |
| CN109678339A (en) * | 2018-12-29 | 2019-04-26 | 通鼎互联信息股份有限公司 | It is a kind of to use H2Optical fiber drawing heating furnace device and method |
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| CN111302617A (en) * | 2020-04-27 | 2020-06-19 | 黄宏琪 | Tail gas recycling system for preparing optical fiber preform by gas phase method |
| 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 |
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| CN109945070A (en) * | 2017-12-20 | 2019-06-28 | 宁德时代新能源科技股份有限公司 | helium recovery device |
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| CN109678339B (en) * | 2018-12-29 | 2023-10-20 | 通鼎互联信息股份有限公司 | H is used 2 Optical fiber drawing furnace apparatus and method |
| CN109678339A (en) * | 2018-12-29 | 2019-04-26 | 通鼎互联信息股份有限公司 | It is a kind of to use H2Optical fiber drawing heating furnace device and method |
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| CN111302617B (en) * | 2020-04-27 | 2022-04-08 | 黄宏琪 | Tail gas recycling system for preparing optical fiber preform by gas phase method |
| CN111302617A (en) * | 2020-04-27 | 2020-06-19 | 黄宏琪 | Tail gas recycling system for preparing optical fiber preform by gas phase method |
| 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 |
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Application publication date: 20170531 |