CN102653815A - Mirror face plate annealing furnace shielding gas reclamation and cyclic utilization device - Google Patents
Mirror face plate annealing furnace shielding gas reclamation and cyclic utilization device Download PDFInfo
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- CN102653815A CN102653815A CN2012101726416A CN201210172641A CN102653815A CN 102653815 A CN102653815 A CN 102653815A CN 2012101726416 A CN2012101726416 A CN 2012101726416A CN 201210172641 A CN201210172641 A CN 201210172641A CN 102653815 A CN102653815 A CN 102653815A
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Abstract
The invention discloses a mirror face plate annealing furnace shielding gas reclamation and cyclic utilization device, wherein shielding gas tail gas and nitrogen hydrogen mixed gas discharged by the mirror face plate annealing furnace is subjected to cleaning treatment such as reducing temperature, leaching and removing dust, cooling dehydration, pressure charging, oil removing, deoxygenation, dehydration and denitrification so as to obtain purified hydrogen to be used as shielding gas again so as to enter the mirror face plate annealing furnace for cyclic utilization, and the service cost of the hydrogen is reduced. More than that, the discharge port of regeneration gas of each device unit in an adsorbing regenerative type drying unit is connected with the inlet of a trapping tank; the regenerated gas after sweeping enters the trapping tank, and is subjected to cleaning treatment such as reducing temperature, leaching and removing dust, cooling dehydration, pressure charging, oil removing, deoxygenation, dehydration and denitrification again, the mirror face plate shielding gas reclamation and cyclic utilization device realizes hydrogen zero discharge, and the energy conservation and emission reduction can be realized in true sense.
Description
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Technical field
the present invention relates to mirror plane plate annealing oven protection gas recycle and reuse device.
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Background technology
The annealing of
stainless steel mirror board is meant through the high temperature annealing of minute surface grade stainless steel plate in high hydrogen environment after cold rolling the scraping.In order to guarantee the mirror effect of annealing surface, the mirror board annealing process is accomplished in the high hydrogen environment of high temperature.Normally used furnace gas consists of H 2 + N 2 , when stove turned round, wherein minute surface furnace roof portion fed high-purity hydrogen, got in the minute surface furnace body for preventing extraneous air, on the furnace sealing face, fed nitrogen-sealed, because the furnace space of minute surface lehre is bigger, need in body of heater, feed a large amount of H 2 + N 2 Gas mixture is discharged the almost H of equivalent from the lehre outlet simultaneously 2 + N 2 Gas mixture.
The stainless steel mirror board annealing process is a continuous uninterrupted process, finishes to come out of the stove with the nitrogen replacement except just beginning shove charge and annealing, and other time is all led to protection gas H
2
+ N
2
, the tolerance of the protection hydrogen of a mirror plane plate annealing oven is 120Nm
3
/ h, this part protection gas active loss gas in operational process has only 5% ~ 8%, and residue protection hydrogen directly burns or to the atmosphere emptying, causes waste.
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Summary of the invention
the purpose of this invention is to provide and a kind ofly get into the device that lehre recycles again after can the protection gas of mirror plane plate annealing oven discharging being reclaimed, handle, purify; This device has been realized the hydrogen zero release, reaches the purpose of energy-saving and emission-reduction, reduction hydrogen use cost.
For achieving the above object, the technical scheme that the present invention adopts is: mirror plane plate annealing oven protection gas recycle and reuse device comprises from the upper reaches downstream successively:
The capture tank that import can be connected with the protection gas relief outlet of said mirror plane plate annealing oven;
The elution device that import can be connected with the outlet of said capture tank;
First water cooler that import can be connected with the outlet of said elution device;
First steam separator that import can be connected with the outlet of said first water cooler;
Import can be connected with the air outlet of said first steam separator and be used for the air outlet expellant gas of this first steam separator is carried out the gas blower of supercharging;
Import can be connected with the outlet of said gas blower removes oil tank;
The deoxygenator that import can be connected with the said outlet that removes oil tank;
Second water cooler that import can be connected with the outlet of said deoxygenator;
Second steam separator that import can be connected with the outlet of said second water cooler;
The import air outlet expellant gas that is used for this second steam separator that can be connected with the air outlet of said second steam separator carries out exsiccant absorption regeneration formula drying installation; This absorption regeneration formula drying installation comprises a plurality of adsorption dry and regenerated device units of hocketing successively, and the relief outlet of the resurgent gases of each said device unit is connected with the import of said capture tank;
Import can be connected with the outlet of the dry gas of said each device unit and be used for dry gas is carried out the gas compressor of supercharging;
import can be connected to be used for the gas after the gas compressor supercharging separated with the transformation absorption that makes hydrogen and carry hydrogen production device with the outlet of said gas compressor, and the outlet that the hydrogen of hydrogen production device is carried in said transformation absorption is connected with the import of the hydrogen of said mirror plane plate annealing oven.
preferably; Said mirror plane plate annealing oven protection gas recycle and reuse device also comprises return valve; The import of this return valve is connected with the outlet of said gas blower, and the outlet of said return valve is connected with the import of said first water cooler.
preferably; Said mirror plane plate annealing oven protection gas recycle and reuse device also comprises controlling valve of voltage regulation; The import of this controlling valve of voltage regulation is connected with the outlet of said gas compressor, and the outlet of said controlling valve of voltage regulation is connected with the import of said gas compressor.
preferably; Said mirror plane plate annealing oven protection gas recycle and reuse device also comprises pressure regulator valve, and the outlet that the hydrogen of hydrogen production device is carried in said transformation absorption is connected through the import of this pressure regulator valve with the hydrogen of said mirror plane plate annealing oven.
preferably; Said mirror plane plate annealing oven protection gas recycle and reuse device also comprises the dew point hygrometer that can detect the hydrogen water-content, the Analysis Hydrogen appearance that can detect hydrogen purity, the oxygen analyser that can detect the hydrogen oxygen level, and said dew point hygrometer, said Analysis Hydrogen appearance, said oxygen analyser all are connected said transformation absorption and carry in the outlet of hydrogen of hydrogen production device.
are because the utilization of technique scheme; The present invention compared with prior art has advantage: in mirror plane plate annealing oven protection gas recycle and reuse device; Protection tail-gas-nitrogen and hydrogen mixture that mirror plane plate annealing oven is discharged; After cooling, drip washing dedusting, cooling de-watering, supercharging, oil removing, deoxygenation, purifying treatment such as dewatering, denitrogenate, the purified hydrogen that obtains gets into mirror plane plate annealing oven as protection gas again and recycles, and has reduced the use cost of hydrogen.Moreover; The relief outlet of the resurgent gases of each device unit is connected with the import of capture tank in the absorption regeneration formula drying installation; The gas that purges like this after regenerating gets into capture tank; Again lower the temperature, drip washing dedusting, cooling de-watering, supercharging, oil removing, deoxygenation, the purifying treatment that dewaters, denitrogenate, this protection gas recycle and reuse device has been realized the hydrogen zero release like this, has accomplished energy-saving and emission-reduction truly.
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Description of drawings
accompanying drawing 1 is a synoptic diagram of the present invention.
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Embodiment
Structure of the present invention is further set forth below in conjunction with accompanying drawing in
.
are referring to shown in Figure 1; Mirror plane plate annealing oven protection gas recycle and reuse device comprises the capture tank 1 that is connected successively, elution device 2, first water cooler 4, first steam separator 5, gas blower 6 downstream, removes oil tank 7, deoxygenator 8, second water cooler 9, second steam separator 10, absorption regeneration formula drying installation 11, gas compressor 12, transformation absorption carries hydrogen production device 13 from the upper reaches.In Fig. 1, the protection gas-nitrogen and hydrogen mixture from mirror plane plate annealing oven 17 is discharged at first gets into 5m
3
Capture tank 1; Nitrogen and hydrogen mixture to reclaiming cools, and nitrogen and hydrogen mixture supplies water through water circulating pump 3 in elution device 2 through elution device 2 subsequently; The dust and the molecule impurity that carry in the washing flush away nitrogen and hydrogen mixture; Elution device 2 is a device of the prior art, and concrete structure is referring to Chinese patent document " gas recovery purifying and dedusting device " publication number 201565227U, and the nitrogen and hydrogen mixture of process drip washing then gets into 15 m
2
First water cooler 4 and first steam separator 5 carry out cooling de-watering, remove the saturation water that is brought by elution device 2; This moment, the dew point of nitrogen and hydrogen mixture reached 5 ~ 15 ℃, and nitrogen and hydrogen mixture entering gas blower 6 carries out supercharging then, and gas blower 6 adopts roots blowers here; Gaseous tension reaches 10 ~ 50kpa after gas blower 6 superchargings, and the nitrogen and hydrogen mixture after the supercharging then gets into and removes oil tank 7, the wet goods impurity that the system prime of removing is brought; Gas after the oil removing gets into deoxygenator 8, second water cooler 9, second steam separator 10 successively, carries out deoxygenation, lowers the temperature, dewaters, and then nitrogen and hydrogen mixture gets into absorption regeneration formula drying installation 11 and carries out drying and dewater; Dried gas index is following: oxygen level≤3ppm, gas dew point≤-65 ℃, pressure 10 ~ 50kpa; Follow dried nitrogen and hydrogen mixture; Carry out supercharging through gas compressor 12, gas compressor 12 adopts the hydrogen pressure machine here, and gaseous tension reaches 1 ~ 1.6MPa after gas compressor 12 superchargings; The nitrogen and hydrogen mixture of process supercharging gets into the absorption of multitower transformation subsequently and carries hydrogen production device 13; It is dedicated molecular sieve used to utilize transformation absorption to carry the hydrogen nitrogen that loads in hydrogen production device 13 adsorption towers, carries out hydrogen, nitrogen separation, separates the hydrogen purity that obtains and can reach 99.999%.Mirror plane plate annealing oven 17 protection gas recovering devices carry in-line meter-dew point hygrometer 14, Analysis Hydrogen appearance 15, oxygen analyser 16 and all are connected transformation absorption and carry in the outlet of hydrogen of hydrogen production device 13; The final index of carrying the hydrogen of hydrogen production device 13 outputs through transformation absorption obtains after analyzing through dew point hygrometer 14, Analysis Hydrogen appearance 15, oxygen analyser 16: dew point of hydrogen :-68 ℃; Hydrogen purity: 99.999%; Oxygen level 3ppm; Pure hydrogen after the purification is supplied with mirror plane plate annealing oven 17 as virgin gas again and is done the use of protection gas through free-standing pressure regulator valve 20 control top hole pressure and flows.
In
this mirror plane plate annealing oven protection gas recycle and reuse device; The protection gas that reclaims from mirror plane plate annealing oven 17 is through after drip washing dedusting, supercharging, oil removing, deoxygenation, purifying treatment such as dewatering, denitrogenate; The purified hydrogen that obtains gets into lehre 17 as protection gas again and recycles, and has reduced the use cost of hydrogen.Moreover; In a plurality of hocket the successively adsorption dry and the regenerated device units of absorption regeneration formula drying installation 11; The relief outlet of the resurgent gases of each device unit is connected with the import of capture tank 1, and what the resurgent gases of each device unit adopted is dried gas, through the sorbent material in the dried gas purging device unit; Realize regeneration; Gas behind the purging gets into capture tank 1, after the purifying treatment such as carry out drip washing dedusting, supercharging, oil removing, deoxygenation again, dewater, denitrogenate, remakes protection hydrogen for cleaning and gets into lehre 17 and recycle; This protection gas recycle and reuse device has been realized the hydrogen zero release like this, has accomplished energy-saving and emission-reduction truly.Here specify that except elution device 2 is the device of the prior art, absorption regeneration formula drying installation 11, transformation absorption are carried hydrogen production device 13 and is existing apparatus, so do not give unnecessary details at this about its structure.
are controlled for the steady running of maintenance system and system pressure, are provided with variable valve 18,19,20 in the system.Pressure regulator valve 20 was narrated in the above, was used to regulate charged air pressure, can be adjusted to the pressure of customer need according to customer need.The import of return valve 18 is connected with the outlet of gas blower 6; The outlet of return valve 18 is connected with the import of first water cooler 4; Like this when gas blower 6 backing system pressure lower, or backing system when emergency situations occurring such as source of the gas cut off, then return valve 18 is opened; Gas blower 6 back level system gas backstreamings are taken out the potential safety hazard that negative pressure causes to prime to avoid backing system.The import of controlling valve of voltage regulation 19 is connected with the outlet of gas compressor 12; The outlet of controlling valve of voltage regulation 19 is connected with the import of gas compressor 12; Like this when the pressure of gas compressor 12 back level systems surpasses system design temperature; Controlling valve of voltage regulation 19 is opened, and gas compressor 12 back grade gas backstreamings are avoided back level system superpressure to prime.
Introduce the concrete applicable cases of the mirror plane plate annealing oven protection gas recycle and reuse device of this patent below
: first homemade mirror plane plate annealing oven that the large positive stainless steel in Wuxi ltd has used domestic-developed to go out; The said firm comes into operation the initial stage, all discharges from drain after use to the protection gas that mirror plane plate annealing oven feeds.The active loss gas of finding hydrogen through reality test is less than 10% of gas consumption, and a large amount of hydrogen directly discharging has caused a large amount of hydrogen source wastes, causes production cost high.To above-mentioned situation, in the said firm the cover 400Nm that provides of my company 3 / h mirror plane plate annealing oven protection gas recycle and reuse device reclaims the protection tail-gas in the mirror plane plate annealing oven, utilizes after the purifying treatment again; Obtained success,, recycled through adopting the patent device recover hydrogen through relatively finding; The stainless steel plate quality that minute surface grade stainless steel plate of producing and original production process are produced is suitable, and device is stable, reaches re-set target; Greatly reduce the use cost of hydrogen, also reach the purpose of energy-saving and emission-reduction.
Claims (5)
1. mirror plane plate annealing oven is protected gas recycle and reuse device, it is characterized in that: comprise successively downstream from the upper reaches:
The capture tank that import can be connected with the protection gas relief outlet of said mirror plane plate annealing oven;
The elution device that import can be connected with the outlet of said capture tank;
First water cooler that import can be connected with the outlet of said elution device;
First steam separator that import can be connected with the outlet of said first water cooler;
Import can be connected with the air outlet of said first steam separator and be used for the air outlet expellant gas of this first steam separator is carried out the gas blower of supercharging;
Import can be connected with the outlet of said gas blower removes oil tank;
The deoxygenator that import can be connected with the said outlet that removes oil tank;
Second water cooler that import can be connected with the outlet of said deoxygenator;
Second steam separator that import can be connected with the outlet of said second water cooler;
The import air outlet expellant gas that is used for this second steam separator that can be connected with the air outlet of said second steam separator carries out exsiccant absorption regeneration formula drying installation; This absorption regeneration formula drying installation comprises a plurality of adsorption dry and regenerated device units of hocketing successively, and the relief outlet of the resurgent gases of each said device unit is connected with the import of said capture tank;
Import can be connected with the outlet of the dry gas of said each device unit and be used for dry gas is carried out the gas compressor of supercharging;
Import can be connected to be used for the gas after the gas compressor supercharging separated with the transformation absorption that makes hydrogen and carry hydrogen production device with the outlet of said gas compressor, and the outlet that the hydrogen of hydrogen production device is carried in said transformation absorption is connected with the import of the hydrogen of said mirror plane plate annealing oven.
2. mirror plane plate annealing oven protection gas recycle and reuse device according to claim 1; It is characterized in that: said mirror plane plate annealing oven protection gas recycle and reuse device also comprises return valve; The import of this return valve is connected with the outlet of said gas blower, and the outlet of said return valve is connected with the import of said first water cooler.
3. mirror plane plate annealing oven protection gas recycle and reuse device according to claim 1; It is characterized in that: said mirror plane plate annealing oven protection gas recycle and reuse device also comprises controlling valve of voltage regulation; The import of this controlling valve of voltage regulation is connected with the outlet of said gas compressor, and the outlet of said controlling valve of voltage regulation is connected with the import of said gas compressor.
4. mirror plane plate annealing oven protection gas recycle and reuse device according to claim 1; It is characterized in that: said mirror plane plate annealing oven protection gas recycle and reuse device also comprises pressure regulator valve, and the outlet that the hydrogen of hydrogen production device is carried in said transformation absorption is connected through the import of this pressure regulator valve with the hydrogen of said mirror plane plate annealing oven.
5. mirror plane plate annealing oven protection gas recycle and reuse device according to claim 1; It is characterized in that: said mirror plane plate annealing oven protection gas recycle and reuse device also comprises the dew point hygrometer that can detect the hydrogen water-content, the Analysis Hydrogen appearance that can detect hydrogen purity, the oxygen analyser that can detect the hydrogen oxygen level, and said dew point hygrometer, said Analysis Hydrogen appearance, said oxygen analyser all are connected said transformation absorption and carry in the outlet of hydrogen of hydrogen production device.
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| CN2012101726416A CN102653815A (en) | 2012-05-30 | 2012-05-30 | Mirror face plate annealing furnace shielding gas reclamation and cyclic utilization device |
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| CN2012101726416A CN102653815A (en) | 2012-05-30 | 2012-05-30 | Mirror face plate annealing furnace shielding gas reclamation and cyclic utilization device |
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Cited By (11)
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| CN103266211A (en) * | 2013-04-24 | 2013-08-28 | 苏州品源气体设备有限公司 | System for recovery and recycle of bell jar-type bright annealing furnace shielding gas |
| CN104110972A (en) * | 2014-07-28 | 2014-10-22 | 苏州新思气体系统有限公司 | Tail gas recovery purification recycling device and technology of annealing furnace system |
| CN104108681A (en) * | 2014-08-01 | 2014-10-22 | 艾伯纳工业炉(太仓)有限公司 | Hydrogen gas recovery device for vertical bright annealing line |
| CN104846159A (en) * | 2015-06-01 | 2015-08-19 | 苏州苏净保护气氛有限公司 | Continuous annealing furnace with shielding gas recovery function |
| CN104988300A (en) * | 2015-08-12 | 2015-10-21 | 江苏甬金金属科技有限公司 | Dust removal mechanism of vertical bright annealing furnace for stainless steel band |
| CN105132666A (en) * | 2014-05-30 | 2015-12-09 | 宝山钢铁股份有限公司 | Pickling-free continuous annealing furnace reducing gas recycle use system and use method thereof |
| CN105158322A (en) * | 2015-06-09 | 2015-12-16 | 亚洲硅业（青海）有限公司 | Pretreatment apparatus used for analysis of trace impurities in polysilicon |
| CN107990746A (en) * | 2017-12-13 | 2018-05-04 | 北方奥钛纳米技术有限公司 | Atmosphere furnace tail gas recycling device and system |
| CN108799833A (en) * | 2018-07-27 | 2018-11-13 | 山东煜龙环保科技股份有限公司 | A kind of nitrogen recycling circulatory system |
| CN110595221A (en) * | 2019-10-08 | 2019-12-20 | 江苏维麦气体科技有限公司 | Tail gas recycling device and process for galvanizing continuous annealing furnace |
| CN111589299A (en) * | 2020-05-14 | 2020-08-28 | 中冶南方工程技术有限公司 | Nitrogen-hydrogen protective gas separation system and method for steel rolling annealing furnace |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266211A (en) * | 2013-04-24 | 2013-08-28 | 苏州品源气体设备有限公司 | System for recovery and recycle of bell jar-type bright annealing furnace shielding gas |
| CN105132666A (en) * | 2014-05-30 | 2015-12-09 | 宝山钢铁股份有限公司 | Pickling-free continuous annealing furnace reducing gas recycle use system and use method thereof |
| CN104110972A (en) * | 2014-07-28 | 2014-10-22 | 苏州新思气体系统有限公司 | Tail gas recovery purification recycling device and technology of annealing furnace system |
| CN104108681A (en) * | 2014-08-01 | 2014-10-22 | 艾伯纳工业炉(太仓)有限公司 | Hydrogen gas recovery device for vertical bright annealing line |
| CN104846159A (en) * | 2015-06-01 | 2015-08-19 | 苏州苏净保护气氛有限公司 | Continuous annealing furnace with shielding gas recovery function |
| CN104846159B (en) * | 2015-06-01 | 2017-05-10 | 苏州苏净保护气氛有限公司 | Continuous annealing furnace with shielding gas recovery function |
| CN105158322A (en) * | 2015-06-09 | 2015-12-16 | 亚洲硅业（青海）有限公司 | Pretreatment apparatus used for analysis of trace impurities in polysilicon |
| CN104988300A (en) * | 2015-08-12 | 2015-10-21 | 江苏甬金金属科技有限公司 | Dust removal mechanism of vertical bright annealing furnace for stainless steel band |
| CN107990746A (en) * | 2017-12-13 | 2018-05-04 | 北方奥钛纳米技术有限公司 | Atmosphere furnace tail gas recycling device and system |
| CN108799833A (en) * | 2018-07-27 | 2018-11-13 | 山东煜龙环保科技股份有限公司 | A kind of nitrogen recycling circulatory system |
| CN110595221A (en) * | 2019-10-08 | 2019-12-20 | 江苏维麦气体科技有限公司 | Tail gas recycling device and process for galvanizing continuous annealing furnace |
| CN111589299A (en) * | 2020-05-14 | 2020-08-28 | 中冶南方工程技术有限公司 | Nitrogen-hydrogen protective gas separation system and method for steel rolling annealing furnace |
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Application publication date: 20120905 |