CN105233629B - A kind of gas absorbing device and technique - Google Patents
A kind of gas absorbing device and technique Download PDFInfo
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- CN105233629B CN105233629B CN201510629714.3A CN201510629714A CN105233629B CN 105233629 B CN105233629 B CN 105233629B CN 201510629714 A CN201510629714 A CN 201510629714A CN 105233629 B CN105233629 B CN 105233629B
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Abstract
The invention discloses a kind of gas absorbing device and technique.Flexible pipe series connection is passed sequentially through including surge tank, first order absorption tank, two level tourie, foam device, and its bottom by being connected respectively or after collecting with accumulator tank with valvular flexible pipe；The porch of wherein surge tank is connected with the process tail gas pipeline and analysis exhaust pipe of parallel connection, wherein two pipelines carry valve with surge tank junction；Dividing plate is provided with inside surge tank；Described two touries are respectively set with valvular absorbing liquid charge door；High pure nitrogen or compressed air piping；Pressure gauge and vacuum pipe are connected in parallel on tungsten hexafluoride pipeline, and each pipeline passes through Valve controlling；Analysis and detecting instrument is connected with tungsten hexafluoride pipeline and analysis exhaust pipe respectively, positioned at the high pure nitrogen pipeline of parallel connection；Between pressure gauge and vacuum pipe and analysis exhaust pipe.The device of the present invention have the advantages that it is simple in construction, be resistant to that burn into assimilation effect is good, energy-conserving and environment-protective, is easy to observation, need not examine.
Description
Technical field
The present invention relates to device for absorbing tail gas, and in particular to a kind of gas absorbing device and technique, more particularly to it is lithium
The absorption plant and technique of tail gas in tungsten production process.
Background technology
Inevitably there is hydrogen fluoride gas generation in the production process of tungsten hexafluoride.Hydrogen fluoride has extremely strong corrosion
Property, there is severe toxicity, can pass through skin and mucosa, respiratory tract and intestines and stomach absorbs, and can more cause skeletal tissue downright bad.And tungsten hexafluoride is met
Vapor in air can quickly react generation hydrogen fluoride with water, cause the injury as hydrogen fluoride.
Tail gas generation is had in the production process of tungsten hexafluoride, the main component of tail gas is tungsten hexafluoride, is fluorinated
Hydrogen and nitrogen.Exhaust emissions containing tungsten hexafluoride and hydrogen fluoride gas not only pollutes environment, Er Qiehui into air
The health given people causes a hidden trouble, thus by tail gas clean-up reach national environmental protection department requirement discharge standard be to benefit the nation and the people
Major issue.
At present, factory's generally use single cycle water washing tank is absorbed the tail gas containing hydrogen fluoride, but such a absorption is handled
Mode can not thoroughly eliminate the hydrogen fluoride in waste gas, and water consumption is big, increase production cost.Absorbed using this method and contain six
The tail gas of tungsten fluoride frequently results in the blocking of shower road junction, influences to absorb.
Patent application CN103331092A discloses a kind of hydrogen mixed gas absorption experiment device containing fluorination, and blender will come from
The air of air-source and from fluorination hydrogen source hydrogen fluoride gas mix in proportion, mixed gas enter gas absorption system after
By the calcium sulphate soln or sodium hydroxide solution of inside through spray-absorption, then the air-introduced machine by being connected to external environment is arranged
Sky, the gas absorption system are first grade absorption tower and/or the two-level absorption tower of series connection with it.The absorption experiment device does not apply to
In the tail gas absorption containing tungsten hexafluoride, there is the risk that suck-back occurs, and use calcium sulfate or sodium hydroxide as absorption
The assimilation effect of liquid is bad, and line clogging phenomenon easily occurs.
In order to preferably handle caused harmful tail gas in the production process of tungsten hexafluoride, improve plant produced building ring
Border, at the same it is preferably cost-effective, therefore design and research and develop a kind of tungsten hexafluoride device for absorbing tail gas and be very important.
The content of the invention
It is an object of the invention to provide one kind can purify caused tail gas in tungsten hexafluoride production process, absorb lithium
The absorption plant of tungsten and hydrogen fluoride and nitrogen gas.
To achieve the above object, the present invention provides a kind of gas absorbing device, it is characterised in that including surge tank (8), one
Level tourie (11), two level tourie (12), foam device (16) pass sequentially through flexible pipe series connection, and wherein surge tank (8), one-level is inhaled
Respectively or collect by the flexible pipe with valve (15) bottom of closed cans (11), two level tourie (12) and foam device (16)
It is connected afterwards with accumulator tank (17)；The porch of wherein surge tank (8) is connected with the process tail gas pipeline (7) and analysis offgas duct of parallel connection
Road (6), wherein process tail gas pipeline (7) and analysis exhaust pipe (6) carry valve (15) with surge tank (8) junction；It is slow
Rush inside tank (8) and respectively set with valve (15) provided with dividing plate (9) the first order absorption tank (11) and two level tourie (12)
Absorbing liquid charge door (14)；High pure nitrogen or compressed air piping (2)；Pressure gauge (3) and vacuum pipe (4) are connected in parallel
On tungsten hexafluoride pipeline (1), each pipeline is controlled by valve (15)；Analysis and detecting instrument (5) one end and tungsten hexafluoride gas
Body pipeline (1) is connected, and one end is connected with analysis exhaust pipe (6), positioned at the high pure nitrogen pipeline (2) of parallel connection；Pressure gauge (3) and
Between vacuum pipe (4) and analysis exhaust pipe (6).
Further, it is characterised in that the flexible pipe is corrosion-resistant flexible pipe；
Optional, dividing plate (9) is stainless steel.
Further, the volume of the surge tank (8) is slightly larger than first order absorption tank (11) and the entrance of two level tourie (12)
Stretch under liquid level can suck-back maximum volume sum.
Further, dividing plate (9) is provided with inside the surge tank (8), can be with the import and outlet of isolation buffer tank；It is preferred that every
Plate (9) is stainless steel.
Further, the first order absorption tank (11) and two level tourie (12) air inlet are designed as horn shape.
Further, the absorbing liquid charge door (14) is located at the cover of first order absorption tank (11) and two level tourie (12)
Place, can supplement or change in time absorbing liquid, and the charge door is in case of emergency, can be used as evacuation port temporarily；One-level is inhaled simultaneously
The outer wall of closed cans (11) and two level tourie (12) is provided with transparent window (13)；Preferably, transparent window (13) material is using resistance to
Corrode transparent PFA pipes.
Further, the absorbing liquid in the first order absorption tank (11) and two level tourie (12) tank is potassium hydroxide solution；
It is preferred that 2.5mol/L potassium hydroxide solution.
Further, the surge tank (8), first order absorption tank (11) and two level tourie (12) use stainless steel,
It is the sealing device of disassembling cleaning, there is phenyl tetrafluoride pad sealing between tank body and cover, and is fixed by screw, can be corrosion-resistant.
Further, the foam device (16) is corrosion-resistant and transparent, and inside, which is furnished with potassium hydroxide solution and phenolphthalein is added dropwise, to be referred to
Show the aobvious red of agent, solution decolourization in foam device, can assist to judge the state of tourie absorbed inside liquid when absorbing saturation.
Another aspect, the present invention also provide a kind of for removing caused industrial tail gas in tungsten hexafluoride production process
Technique, it is characterised in that use described gas absorbing device；
Specifically, analysis tail gas enters band by analyzing exhaust pipe (6) or industrial tail gas by process tail gas pipeline (7)
There is the surge tank (8) of dividing plate (9), accumulate in surge tank and mixed with nitrogen, in the event of absorbing liquid suck-back, buffering can be opened
Valve (15) on the flexible pipe of tank (8) connection accumulator tank (17) introduces the absorbing liquid of suck-back in accumulator tank (17)；Work as surge tank
The gaseous mixture of interior industrial tail gas and the nitrogen of supplement, can be by connection flexible pipe successively when pressure is reached more than an atmospheric pressure
Into first order absorption tank (11) and two level tourie (12)；Tungsten hexafluoride in tail gas is absorbed by its internal absorbing liquid, not with
The nitrogen that absorbing liquid reacts is discharged into air via foam device (16).
Absorption plant of the present invention can both absorb caused process tail gas during production tungsten hexafluoride, can inhale again
Receive analysis tail gas caused by the tail end of analysis and detecting instrument 5.Caused process tail gas is main during the production tungsten hexafluoride
Composition is tungsten hexafluoride, hydrogen fluoride gas and nitrogen.The gas absorbing device of the present invention is applicable not only to purification six simultaneously
Caused tail gas in tungsten fluoride production process, while suitable for the purification only tail gas containing hydrogen fluoride.When not containing six in tail gas
Tungsten fluoride gas and when comprising only hydrogen fluoride gas, it is empty that the High Purity Nitrogen source of the gas in high pure nitrogen pipeline (2) can be substituted for compression
Source of the gas, absorbing liquid can be substituted for industrial sheet alkali lye, effectively reduce cost absorption.
Due to tungsten hexafluoride run into vapor micro in air i.e. can react generation hydrogen fluoride, therefore analysis examine
By being filled with high pure nitrogen and vacuumize two kinds of operations and after Cleaning pipes alternately and repeatedly before survey, then by tungsten hexafluoride
Analysis and detecting instrument is passed through to be detected.The high pure nitrogen purity is 99.999%.Detection is filled with High Purity Nitrogen air-blowing after terminating
Sweep tungsten hexafluoride and enter analysis exhaust pipe (6).Therefore the main component of the analysis tail gas for tungsten hexafluoride and
Nitrogen.
In order to prevent tail gas from suck-back occurs when being reacted with absorbing liquid, so as to pollute pipeline and analysis and detecting instrument (5), this
Invention is mounted with surge tank (8) in tourie front end, while equipped with high pure nitrogen supplement malleation.The volume of the surge tank (8)
Slightly larger than two tourie entrances stretch under liquid level can suck-back maximum volume sum.
The dividing plate (9) of stainless steel is provided with inside the surge tank (8), can with the import and outlet of isolation buffer tank,
Effectively reduce the risk of the absorbing liquid suck-back caused by artificial maloperation vacuumizes.The bottom of the surge tank (8) is provided with row
Discharge port, once suck-back accident occurs, it can open and buffer tank connected valve (15) by the absorbing liquid introducing accumulator tank of suck-back
(17) in.
The surge tank (8) and the sealing device that tourie is disassembling cleaning, there is phenyl tetrafluoride pad between tank body and cover
Sealing, is fixed, material is 316 stainless steels, is resistant to the corrosion of tungsten hexafluoride and hydrogen fluoride, effectively increases its life-span by screw.
Absorbing liquid in the first order absorption tank (11) and two level tourie (12) is potassium hydroxide solution.From hydroxide
Potassium solution is due to that the product potassium fluoride after absorbing compares fluorine as absorbing liquid and without using calcium sulphate soln or sodium hydroxide solution
It is good to change the dissolubility of calcium or sodium fluoride, blocking pipeline prevented from caking after absorption.Preferable absorbing liquid concentration is 2.5mol/L, because
Assimilation effect is optimal at this concentration for potassium hydroxide solution.
The first order absorption tank (11) and two level tourie (12) air inlet are designed as horn shape, stretch into below liquid level,
Tail gas and the response area of absorbing liquid can effectively be increased, beneficial to the progress of absorption.
The tank bottom of the first order absorption tank (11) and two level tourie (12) is provided with exhaust outlet, and opening valve (15) can incite somebody to action
The absorbing liquid of saturation, which is introduced in accumulator tank 17, carries out unified recycling.
Absorbing liquid charge door (14) is provided with the cover of the first order absorption tank (11) and two level tourie (12), can be timely
Supplement changes absorbing liquid, and the charge door is in case of emergency, can be used as evacuation port temporarily.Simultaneously first order absorption tank (11) and
The tank bottom of two level tourie (12) is provided with exhaust outlet, and the absorbing liquid of saturation can be introduced progress in accumulator tank 17 by opening valve 15
Unified recycling.
For the ease of observing the service condition of absorbing liquid, corrosion-resistant transparent PFA pipes conduct is added in the outer wall of tourie
Form (13).The form (13) can help to observe the change of the color, state, liquid level of the absorbing liquid in tourie,
When absorbing liquid become muddy, color be changed into milky or it is faint yellow when should change absorbing liquid in time；When the liquid level of absorbing liquid declines
When should supplement absorbing liquid in time to scale.
The foam device (16) is corrosion-resistant transparent vessel, and its entrance is connected with the outlet of two level tourie (12), interior
Portion is equipped with potassium hydroxide solution and the aobvious red of phenolphthalein indicator is added dropwise.Once solution colour is shoaled or taken off to be colourless, understand immediately
The aobvious acidity of gas blown out by two level tourie, i.e., absorbing liquid in tourie saturation, can change absorbing liquid in time.It is described
Foam device (16) alternative sample tap, assimilation effect can be judged after analytical control without periodically sampling, saves manpower
Material resources are simple and efficient effective.
The present invention can be widely applied for small scale experiments research level or large-scale plant produced is horizontal, have structure
The characteristics of simple possible, safe operation are reliable, energy-conserving and environment-protective.
The present invention by traditional single cycle wash tank arrangement absorption efficiency and apparatus of the present invention absorption efficiency it is multiple
Experimental comparison, verifying the absorption plant of the present invention has more preferable assimilation effect.Device and tradition list in the embodiment of the present invention 1
Circulating water wash tank arrangement is compared, and the rate of recovery of tungsten and fluorine is significantly improved, it was demonstrated that the device in the embodiment of the present invention 1 is than passing
System single cycle washing tank arrangement has more preferable assimilation effect for the tail gas of tungsten hexafluoride.
The gas absorbing device of the present invention is applicable not only to purify caused tail gas in tungsten hexafluoride production process, fits simultaneously
For purifying the only tail gas containing hydrogen fluoride.It is high when not containing tungsten hexafluoride in tail gas and comprise only hydrogen fluoride gas
High Purity Nitrogen source of the gas in purity nitrogen feed channel 2 can be substituted for compressed air source, and absorbing liquid can be substituted for industrial sheet alkali lye, effectively
Reduce cost absorption.
The device of the present invention has simple in construction, ability burn into assimilation effect compared with traditional single cycle washes tank arrangement
Good, energy-conserving and environment-protective, it is easy to observation, the advantages that need not examining.
Brief description of the drawings
Fig. 1 be the present invention tungsten hexafluoride and hydrogen fluoride gas absorption plant structural representation.
Fig. 2 is the structural representation of traditional single cycle washing tank arrangement.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.Embodiment
In unreceipted particular technique or condition person, according to the technology described by document in the art or condition or according to the description of product
Book is carried out.Agents useful for same or the unreceipted production firm person of instrument, being can be by the conventional products of acquisition purchased in market.
Embodiment 1：The processing of tungsten hexafluoride tail gas
Referring to accompanying drawing 1, absorption plant of the invention mainly by surge tank 8, first order absorption tank 11, two level tourie 12,
Foam device 16 and accumulator tank 17 form.High pure nitrogen pipeline 2, pressure gauge 3 and vacuum lead 4 are connected in tungsten hexafluoride in parallel
On gas pipeline 1, each pipeline is by Valve controlling, by being filled with high pure nitrogen and take out true alternately and repeatedly before analysis detects
Empty two kinds of operations and after Cleaning pipes, then tungsten hexafluoride is passed through analysis and detecting instrument 5 and detected.Detection is filled after terminating
Enter high pure nitrogen purging tungsten hexafluoride and enter analysis exhaust pipe 6.It is in parallel with process tail gas pipeline 7 to analyze exhaust pipe 6
The porch of surge tank 8 is accessed, each pipeline passes through Valve controlling.Two kinds of tail gas by passing through first order absorption respectively after surge tank 8
Tank 11, two level tourie 12 absorb, and are discharged into after importing in foam device 16 in air.
The inside of surge tank 8 is provided with the dividing plate 9 of stainless steel, can effectively be reduced with the import and outlet of isolation buffer tank
The risk of absorbing liquid suck-back caused by artificial maloperation vacuumizes.The bottom of the surge tank 8 is provided with exhaust outlet, once
Generation suck-back accident, valve 10 can be opened and introduce the absorbing liquid of suck-back in accumulator tank 17.First order absorption tank 11 and two level absorb
The absorbing liquid of tank 12 is 2.5mol/L potassium hydroxide solution.The can body of first order absorption tank 11 and two level tourie 12 is provided with form
13, it can help to observe the change of the color, state, surplus of the absorbing liquid in tourie, can in time more once changing
Change or supplement absorbing liquid.Absorbing liquid charge door 14 is provided with the cover of first order absorption tank 11 and two level tourie 12, can be mended in time
Fill or change absorbing liquid, and the charge door is in case of emergency, can be used as evacuation port temporarily.First order absorption tank 11 and two level absorb
The tank bottom of tank 12 is provided with exhaust outlet, and opening valve 15 will can be carried out at unified recovery in the absorbing liquid introducing accumulator tank 17 of saturation
Reason.
By washing tank arrangement (see Fig. 2) to traditional single cycle using circulated sprinkling alkali liquor absorption method and utilizing malleation
The apparatus of the present invention for importing two level alkali liquor absorption method carry out many experiments contrast for the absorption efficiency of tungsten hexafluoride tail gas, test
The absorption plant of the card present invention has preferably to the assimilation effect of tungsten hexafluoride.
In Fig. 2,18 sample taps, 19 absorption towers, 20 bottomspumps, 21 bottom of towe liquid storage tanks, 22 charge doors, 23 agitating devices,
24 storage tanks, 25 filler pipes, 26 pumps, 27 sample taps, 28 air-introduced machines, 29 emptyings.
Table 1 is the rate of recovery pair of the device and traditional single cycle washing tank arrangement absorption tungsten and fluorine in the embodiment of the present invention 1
Compare table.The rate of recovery of wherein tungsten is that the content for using tungstic acid in spectrophotometry absorbing liquid is calculated, and formula is shown in
Following formula (1), (2)；The rate of recovery of fluorine is calculated using the content of fluorine ion in Fluoride ion selective electrode method measure absorbing liquid,
Formula sees below formula (3), (4).
The content of tungstic acid in absorbing liquid is calculated as follows：
In formula：
-- the concentration of tungstic acid, mol/L in absorbing liquid；
E1-- measure absorbing liquid or dilution light absorption value；
E0-- measure sample blank light absorption value；
K -- the slope of tungstic acid standard working curve；
V1-- pipette the volume of absorbing liquid, mL；
V2-- divide the liquor capacity for taking dilution, mL.
Tungsten (in terms of the W) rate of recovery is calculated as follows：
In formula：
-- the concentration of tungstic acid, mol/L in absorbing liquid；
V -- absorbing liquid cumulative volume, L；
mWF6-- it is passed through the gross mass of tungsten hexafluoride, g；
MW-- the molal weight of tungsten, g/mol；
MWF6-- the molal weight of tungsten hexafluoride, g/mol.
The content of fluorine ion in absorbing liquid is calculated as follows：
In formula：
──VxThe concentration of fluorine ion, mol/L in milliliter solution；
Cs-- add the molar concentration of NaF standard liquids in test solution, mol/L；
Vs-- add the volume of NaF standard liquids in test solution, mL；
Vx-- divide and take test solution institute constant volume, mL；
E2-- the potential value of solution, mV are surveyed after mark-on；
E1-- survey the potential value of solution, mV；
S -- electrode slope.
Fluorine is calculated as follows (with F-Meter) the rate of recovery：
In formula：
-- the concentration of fluorine ion, mol/L in absorbing liquid；
V -- absorbing liquid cumulative volume, L；
MF-- the molal weight of fluorine ion, g/mol；
mWF6-- it is passed through the gross mass of tungsten hexafluoride, g；
MWF6-- the molal weight of tungsten hexafluoride, g/mol.
The rate of recovery that device in the embodiment of the present invention 1 of table 1 absorbs tungsten and fluorine with traditional single cycle washing tank arrangement contrasts
Table
| Device | Traditional single cycle washes tank arrangement | Device in the embodiment of the present invention 1 |
| The rate of recovery of tungsten | 37% | 85% |
| The rate of recovery of fluorine | 31% | 80% |
From upper table 1, device in the embodiment of the present invention 1 compared with traditional single cycle washes tank arrangement, tungsten and fluorine
The rate of recovery has obvious rise, it was demonstrated that the device in the embodiment of the present invention 1 is directed to hexafluoro than traditional single cycle washing tank arrangement
The tail gas for changing tungsten has more preferable assimilation effect.
Embodiment 2：The processing of hydrogen fluoride tail gas
Referring to accompanying drawing 1, compressed air piping 2, pressure gauge 3 and vacuum lead 4 are connected in hydrogen fluoride gas pipeline 1 in parallel
On, each pipeline is by Valve controlling, by being filled with high pure nitrogen and vacuumize two kinds of behaviour alternately and repeatedly before analysis detects
Make after Cleaning pipes, then hydrogen fluoride gas is passed through analysis and detecting instrument 5 and detected.Detection is filled with compressed air after terminating
Purge hydrogen fluoride gas and enter analysis exhaust pipe 6.It is slow to analyze the access in parallel with hydrogen fluoride process tail gas pipeline 7 of exhaust pipe 6
The porch of tank 8 is rushed, each pipeline passes through Valve controlling.Two kinds of tail gas by passing through first order absorption tank 11, two respectively after surge tank 8
Level tourie 12 absorbs, and is discharged into after importing in foam device 16 in air.
The inside of surge tank 8 is provided with the dividing plate 9 of stainless steel, can effectively be reduced with the import and outlet of isolation buffer tank
The risk of absorbing liquid suck-back caused by artificial maloperation vacuumizes.The bottom of the surge tank 8 is provided with exhaust outlet, once
Generation suck-back accident, valve 10 can be opened and introduce the absorbing liquid of suck-back in accumulator tank 17.First order absorption tank 11 and two level absorb
The absorbing liquid of tank 12 is 10mol/L solution.The can body of first order absorption tank 11 and two level tourie 12 is provided with form 13, Ke Yibang
The change of the color, state, surplus of the absorbing liquid helped in observation tourie, once suction can be changed or supplement in time by changing
Receive liquid.Absorbing liquid charge door 14 is provided with the cover of first order absorption tank 11 and two level tourie 12, can supplement or change in time suction
Liquid is received, and the charge door is in case of emergency, can be used as evacuation port temporarily.The tank bottom of first order absorption tank 11 and two level tourie 12
Provided with exhaust outlet, unified recycling can will be carried out in the absorbing liquid introducing accumulator tank 17 of saturation by opening valve 15.
When not containing tungsten hexafluoride in tail gas and comprise only hydrogen fluoride gas, High Purity Nitrogen source of the gas can be substituted for pressure
Contracting air-source, KOH absorption liquid can be substituted for industrial sheet alkali lye, effectively reduce cost absorption.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (9)
1. a kind of gas absorbing device, it is characterised in that described gas absorbing device is used to remove tungsten hexafluoride production process
In caused industrial tail gas, including surge tank (8), first order absorption tank (11), two level tourie (12), foam device (16) are successively
Connected by flexible pipe, wherein the bottom of surge tank (8), first order absorption tank (11), two level tourie (12) and foam device (16)
It is connected respectively or after collecting with accumulator tank (17) by the flexible pipe with valve (15)；The surge tank (8), first order absorption tank
(11) and two level tourie (12) uses stainless steel, is the sealing device of disassembling cleaning, between tank body and cover
There is phenyl tetrafluoride pad sealing, and fixed by screw, can be corrosion-resistant；The flexible pipe is corrosion-resistant flexible pipe；The wherein porch of surge tank (8)
It is connected with the process tail gas pipeline (7) and analysis exhaust pipe (6) of parallel connection, wherein process tail gas pipeline (7) and analysis exhaust pipe
(6) valve (15) is carried with surge tank (8) junction；Dividing plate (9) the first order absorption tank (11) is provided with inside surge tank (8)
The absorbing liquid charge door (14) with valve (15) is respectively set with two level tourie (12)；High pure nitrogen or compressed air piping
(2), pressure gauge (3) and vacuum pipe (4) are connected in parallel on tungsten hexafluoride pipeline (1), and each pipeline passes through valve (15)
Control；Analysis and detecting instrument (5) one end is connected with tungsten hexafluoride pipeline (1), and one end is connected with analysis exhaust pipe (6),
Positioned at the high pure nitrogen pipeline (2) of parallel connection, between pressure gauge (3) and vacuum pipe (4) and analysis exhaust pipe (6)；It is described slow
Rush the volume of tank (8) slightly larger than the entrance of first order absorption tank (11) and two level tourie (12) stretch under liquid level can suck-back maximum
Volume sum；
Analysis tail gas is entered with dividing plate (9) by analyzing exhaust pipe (6) or industrial tail gas by process tail gas pipeline (7)
Surge tank (8), accumulate in surge tank and mixed with nitrogen, in the event of absorbing liquid suck-back, surge tank (8) can be opened and connected back to
The valve (15) received on the flexible pipe of groove (17) introduces the absorbing liquid of suck-back in accumulator tank (17)；When the industrial tail gas in surge tank
With the gaseous mixture of the nitrogen of supplement, when pressure is reached more than an atmospheric pressure, first order absorption can be sequentially entered by connection flexible pipe
Tank (11) and two level tourie (12)；Tungsten hexafluoride in tail gas is absorbed by its internal absorbing liquid, does not occur with absorbing liquid anti-
The nitrogen answered is discharged into air via foam device (16).
2. the gas absorbing device described in claim 1, it is characterised in that dividing plate (9) is stainless steel.
3. the gas absorbing device described in claim 1, it is characterised in that dividing plate (9) is provided with inside the surge tank (8), can
With the import and outlet of isolation buffer tank.
4. the gas absorbing device described in claim 1, it is characterised in that the first order absorption tank (11) and two level tourie
(12) air inlet is designed as horn shape.
5. the gas absorbing device described in claim 1, it is characterised in that the absorbing liquid charge door (14) is located at first order absorption
At the cover of tank (11) and two level tourie (12), absorbing liquid can be supplemented or change in time, and the charge door is in case of emergency,
Evacuation port can be used as temporarily；The outer wall of first order absorption tank (11) and two level tourie (12) is provided with transparent window (13) simultaneously.
6. the gas absorbing device described in claim 5, it is characterised in that transparent window (13) material is using corrosion-resistant transparent
PFA is managed.
7. the gas absorbing device described in claim 1, it is characterised in that the first order absorption tank (11) and two level tourie
(12) absorbing liquid in tank is potassium hydroxide solution.
8. the gas absorbing device described in claim 7, it is characterised in that the first order absorption tank (11) and two level tourie
(12) absorbing liquid in tank is 2.5mol/L potassium hydroxide solution.
9. the gas absorbing device described in claim 1, it is characterised in that the foam device (16) is corrosion-resistant and transparent, interior
Portion is equipped with potassium hydroxide solution and the aobvious red of phenolphthalein indicator is added dropwise, and when absorbing saturation, solution decolourization in foam device, can be assisted
Help the state for judging tourie absorbed inside liquid.
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| CN108201871A (en) * | 2018-01-10 | 2018-06-26 | 南通大学 | Aluminium clinker water solution nitrogen removing device |
| CN108862193B (en) * | 2018-08-15 | 2021-08-27 | 黑龙江莱睿普思环境科技发展有限公司 | Pressure-equalizing buffer tank for hydrogen production by methanol cracking |
| CN110618237A (en) * | 2019-09-23 | 2019-12-27 | 东北大学 | Fluorine concentration measuring device, fluorine concentration measuring method, and method for measuring adsorption efficiency of adsorbent |
| CN111638286A (en) * | 2020-06-11 | 2020-09-08 | 盐城工学院 | Device for pretreating smelly water sample and operation process thereof |
| CN114293173B (en) * | 2021-12-17 | 2024-02-09 | 厦门钨业股份有限公司 | Device for carbon doped chemical vapor deposition tungsten coating |
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| JP5017071B2 (en) * | 2007-12-10 | 2012-09-05 | 株式会社日立製作所 | Exhaust gas treatment equipment |
| CN101601957B (en) * | 2008-12-23 | 2013-06-19 | 匡优新 | Improved device for recovering, processing and recycling acidic waste gas |
| CN103331092A (en) * | 2013-06-07 | 2013-10-02 | 北方民族大学 | Hydrogen fluoride gas absorption experimental device |
| CN203790816U (en) * | 2014-03-25 | 2014-08-27 | 国家电网公司 | Test tail gas absorbing device for acidic and toxic standard gas in decomposition products of sulfur hexafluoride |
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2015
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