CN109289226A - The processing method and its device of high concentration decahydronaphthalene tail gas - Google Patents
The processing method and its device of high concentration decahydronaphthalene tail gas Download PDFInfo
- Publication number
- CN109289226A CN109289226A CN201811148918.5A CN201811148918A CN109289226A CN 109289226 A CN109289226 A CN 109289226A CN 201811148918 A CN201811148918 A CN 201811148918A CN 109289226 A CN109289226 A CN 109289226A
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- condenser
- decahydronaphthalene
- tail gas
- absorber
- high concentration
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- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 title claims abstract description 186
- 238000003672 processing method Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 137
- 239000006096 absorbing agent Substances 0.000 claims abstract description 57
- 238000003795 desorption Methods 0.000 claims abstract description 33
- 239000002904 solvent Substances 0.000 claims abstract description 31
- 230000004907 flux Effects 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000011282 treatment Methods 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 59
- 238000001816 cooling Methods 0.000 claims description 37
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 27
- 229910052757 nitrogen Inorganic materials 0.000 claims description 27
- 239000001301 oxygen Substances 0.000 claims description 27
- 229910052760 oxygen Inorganic materials 0.000 claims description 27
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 238000001179 sorption measurement Methods 0.000 claims description 13
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 5
- 239000003463 adsorbent Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000002808 molecular sieve Substances 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000002912 waste gas Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000005662 Paraffin oil Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to technical field of waste gas treatment more particularly to a kind of processing methods and its device of high concentration decahydronaphthalene tail gas.A kind of processing unit of high concentration decahydronaphthalene tail gas, including first-stage condenser, heat exchanger, secondary condenser, the first flux bath, absorber, heater, condenser, the second flux bath；The gas vent of first-stage condenser is successively connected to the zone of heat liberation of heat exchanger and secondary condenser by pipeline, the solvent outlet of secondary condenser is connect with the first flux bath, is passed through in absorber after the cold fluid pass connection of the gas vent and heat exchanger of secondary condenser by adsorbing pipeline；The offgas outlet of absorber is successively connect with heater and condenser, and the solvent outlet of condenser is connect with the second flux bath, and the gas vent of condenser is connected to by the way that pipeline is desorbed with the desorption air inlet of absorber after connecting with heater.The processing method and its plant energy consumption of high concentration decahydronaphthalene tail gas of the present invention are low, the decahydronaphthalene rate of recovery is high and tail gas qualified discharge.
Description
Technical field
The present invention relates to the processing method of technical field of waste gas treatment more particularly to a kind of high concentration decahydronaphthalene tail gas and its
Device.
Background technique
High-performance polyethylene fibres are to promote as the important materials of national military project protective articles and space flight and aviation urgent need are related to
Into the important new material of high-end technology industry development.Solvent for producing high-performance polyethylene fibres has decahydronaphthalene, paraffin
Oil, paraffin and kerosene produce high wherein being best production line by the dry route of solvent of decahydronaphthalene using decahydronaphthalene as solvent
Performance polyethylene generates decahydronaphthalene tail gas, and decahydronaphthalene tail gas is based on nitrogen and decahydronaphthalene gas.Domestic processing high concentration at present
The mode of decahydronaphthalene tail gas is that pressurization condensation method recycles decahydronaphthalene, i.e., tail gas is pressurized to higher pressure, while condensation segment needs
Tail gas is cooled into lower temperature to ensure that the rate of recovery, this method have the shortcomings that comprehensive energy consumption is high.
Summary of the invention
In order to solve the above problem, the object of the present invention is to provide one kind, low energy consumption, the decahydronaphthalene rate of recovery is high and tail gas reaches
Mark the processing method and its device of the high concentration decahydronaphthalene tail gas of discharge.
To achieve the above object, the present invention designed by high concentration decahydronaphthalene tail gas processing method comprising steps of
1) condensation adsorption handles high concentration decahydronaphthalene tail gas
High concentration decahydronaphthalene tail gas is cooling through secondary condenser second level again first after first-stage condenser level-one cooling treatment
It handles, most of decahydronaphthalene gas is condensed into decahydronaphthalene liquid solvent in tail gas, fraction decahydronaphthalene gas and nitrogen in tail gas
It is passed through in absorber by adsorbing pipeline, decahydronaphthalene gas is adsorbed device absorption, and nitrogen is recycled as desorption gas；
2) decahydronaphthalene solvent is desorbed
After absorber adsorption saturation, the nitrogen of step 1) is passed through in absorber after being heated by heater and carries out at desorption
It manages, decahydronaphthalene gas is condensed into decahydronaphthalene solvent and enters after the nitrogen of decahydronaphthalene gas and high temperature is cooled down by condenser after desorption
Second flux bath, the nitrogen after cooling are passed through circulation in absorber by desorption pipeline after heating again by heater and decahydro are desorbed
Naphthalene；
3) absorber cools down
When device condensate liquid mouth to be condensed is flowed out without decahydronaphthalene solvent, stop heater, circulating nitrogen gas is cooled down by condenser
After be passed directly into absorber to absorber cool down.
Preferably, in the step 1), heat exchanger, high concentration are equipped between first-stage condenser and secondary condenser
Then level-one tail gas after cooling is passed through the hot-fluid of heat exchanger first through first-stage condenser level-one cooling treatment by decahydronaphthalene tail gas
Body channel is finally passed through secondary condenser and carries out second level cooling treatment, and the tail gas after second level cooling treatment is passed through heat exchanger
It is passed through in absorber and carries out again after cold fluid pass and the tail gas progress heat exchange after cooling of level-one in exchanger heat fluid channel
Adsorption treatment.
Preferably, the step 1) is adsorbed and is equipped in the first oxygen concentration detector monitoring absorption pipeline in pipeline
Oxygen content；Nitrogen at room is first replaced the air in purging pipeline and absorber before desorption processing by the step 2), described
It is desorbed in pipeline and is equipped with oxygen content in the second oxygen concentration detector monitoring desorption pipeline.
Preferably, the processing method of the high concentration decahydronaphthalene tail gas passes through the processing of high concentration decahydronaphthalene tail gas
Device realizes that the processing unit of the high concentration decahydronaphthalene tail gas includes first-stage condenser, heat exchanger, secondary condenser, first
Flux bath, absorber, heater, condenser, the second flux bath；The gas vent of first-stage condenser by pipeline successively with heat exchange
The zone of heat liberation of device is connected to secondary condenser, and the solvent outlet of secondary condenser is connect with the first flux bath, B-grade condensation
It is passed through in absorber after the cold fluid pass connection of the gas vent and heat exchanger of device by adsorbing pipeline；The tail gas of absorber goes out
Mouth is successively connect with heater and condenser, and the solvent outlet of condenser is connect with the second flux bath, the gas vent of condenser
It is connected to by the way that pipeline is desorbed with the desorption air inlet of absorber after being connect with heater.
A kind of processing unit of high concentration decahydronaphthalene tail gas, including first-stage condenser, heat exchanger, secondary condenser, first
Flux bath, absorber, heater, condenser, the second flux bath；The gas vent of first-stage condenser by pipeline successively with heat exchange
The zone of heat liberation of device is connected to secondary condenser, and the solvent outlet of secondary condenser is connect with the first flux bath, B-grade condensation
It is passed through in absorber after the cold fluid pass connection of the gas vent and heat exchanger of device by adsorbing pipeline；The tail gas of absorber goes out
Mouth is successively connect with heater and condenser, and the solvent outlet of condenser is connect with the second flux bath, the gas vent of condenser
It is connected to by the way that pipeline is desorbed with the desorption air inlet of absorber after being connect with heater.
Preferably, the first-stage condenser is board-like, plate-fin or shell and tube condenser；The secondary condenser
For board-like, plate-fin or shell and tube condenser.
Preferably, the adsorbent material of the absorber is Carbon fibe, activated carbon, honeycomb carbon, molecular sieve or resin
Adsorbent material.
Preferably, the first oxygen concentration detector is equipped in the absorption pipeline.
Preferably, the second oxygen concentration detector is equipped in the desorption pipeline.
The present invention has the advantages that compared with prior art, the processing method of high concentration decahydronaphthalene tail gas of the present invention is not necessarily to
Compressor pressurized treatments, while the nitrogen of tail gas can carry out circulating and recovering, the adsorbent material desorption and regeneration circulation after adsorption saturation
It uses.Specifically, the present invention makes most decahydronaphthalene gas in tail gas first using the cooling temperature for reducing tail gas of classification
It is condensed into liquid solvent, facilitates the condensation effect of decahydronaphthalene gas using the cooling temperature for gradually reducing tail gas of classification, simultaneously
Mitigate the load of condenser.
Secondly heat exchanger is equipped between first-stage condenser and secondary condenser, it is cold through level-one in exchanger heat fluid channel
But heat exchange is carried out through second level tail gas after cooling in the tail gas and heat exchanger cold fluid pass after, it is cold on the one hand to reduce level-one
But the temperature of tail gas after, i.e. high concentration decahydronaphthalene tail gas increase primary cooled again between level-one is cooling and second level is cooling
Journey reduces the cooling energy consumption of second level, on the other hand increases the temperature of tail gas after second level cooling, avoids the tail gas that temperature is too low
The problem bad into adsorption effect caused by absorber.
De-adsorption cycle utilization finally is carried out using the nitrogen in tail gas, it is energy saving, reduce energy consumption.
Detailed description of the invention
Fig. 1 is the schematic diagram of the processing unit of high concentration decahydronaphthalene tail gas of the present invention；
Each part numbers are as follows in figure: first-stage condenser 1, heat exchanger 2, secondary condenser 3, the first blower 4, the first solvent
Slot 5, absorber 6 (inlet exhaust gas 6.1, offgas outlet 6.2, desorption air inlet 6.3), heater 7, the second blower 8, condenser 9,
Second flux bath 10, the first oxygen concentration detector 11, the second oxygen concentration detector 12.
Specific embodiment
For a better understanding of the invention, invention is described in detail below with reference to drawings and concrete examples.
To solve the problems, such as that existing use pressurization condensing mode is handled in the presence of energy consumption is high in high concentration decahydronaphthalene tail gas process,
The present invention provides a kind of processing method of high concentration decahydronaphthalene tail gas, specifically, first through first-stage condenser and B-grade condensation
Device carries out condensing recovery to decahydronaphthalene tail gas, and most of decahydronaphthalene is condensed into decahydronaphthalene liquid solvent in decahydronaphthalene tail gas, contains
Fraction decahydronaphthalene and nitrogen tail gas enter absorber, and decahydronaphthalene is adsorbed medium absorption, and the nitrogen of discharge is as desorption gas
It is recycled into use, desorption process is handled using the nitrogen desorption in tail gas, and the decahydronaphthalene gas after desorption is after condenser cools down
It is condensed into decahydronaphthalene liquid solvent.Below by by specific embodiment come the processing to high concentration decahydronaphthalene tail gas of the invention
The preferred embodiment of method and device thereof is described in detail.
Embodiment
As shown in connection with fig. 1, the processing unit of high concentration decahydronaphthalene tail gas of the invention, including first-stage condenser 1, heat exchanger
2, secondary condenser 3, the first blower 4, the first flux bath 5, absorber 6, heater 7, the second blower 8, condenser 9, second are molten
Agent slot 10, the first oxygen concentration detector 11, the second oxygen concentration detector 12.
The gas feed of first-stage condenser 1 is connect with high concentration decahydronaphthalene exhaust pipe, the gas vent of first-stage condenser 1
It is successively connected to the zone of heat liberation of heat exchanger 2 and secondary condenser 3 by pipeline, the solvent outlet of secondary condenser 3 and the
The connection of one flux bath 5, the gas vent of secondary condenser 3 pass through absorption 13 He of pipeline after the cold fluid pass of heat exchanger 2
First blower 4 is connected to the inlet exhaust gas 6.1 of absorber 6；The offgas outlet 6.2 of absorber 6 by pipeline successively with heater
7 and condenser 9 connect, the solvent outlet of condenser 9 connect with the second flux bath 10, the gas vent and heater 7 of condenser 9
It is connected to by desorption pipeline 14 and the second blower 8 with the desorption air inlet 6.3 of absorber 6 after connection.
It adsorbs and is equipped with the first oxygen concentration detector 11 in pipeline 13, as judgement absorption pipeline 13 and absorber bed oxygen
Whether content controls foundation in safe range, while controlling the oxygen content in recycling nitrogen, guarantees nitrogen gas purity.
It is desorbed in pipeline 14 and is equipped with the second oxygen concentration detector 12, as judgement desorption pipeline and absorber bed oxygen content
Whether foundation in safe range is controlled.
The processing method of high concentration decahydronaphthalene tail gas of the present invention is realized by the processing unit of high concentration decahydronaphthalene tail gas
, as shown in connection with fig. 1, the specific steps of the processing method of high concentration decahydronaphthalene tail gas of the present invention include:
1) condensation adsorption handles high concentration decahydronaphthalene tail gas
It include nitrogen and decahydronaphthalene gas in high concentration decahydronaphthalene tail gas, and the concentration of decahydronaphthalene gas is higher, it is highly concentrated
It spends decahydronaphthalene tail gas and carries out level-one cooling treatment first with first-stage condenser 1, then level-one tail gas after cooling is passed through and is changed
The zone of heat liberation of hot device 2 is finally passed through secondary condenser 3 and carries out second level cooling treatment, the tail gas after second level cooling treatment
Temperature is down to 0 DEG C, and most of decahydronaphthalene gas is condensed into decahydronaphthalene liquid solvent and goes out from the solvent of secondary condenser 3 in tail gas
Mouth outflow enters the first flux bath 5, and fraction decahydronaphthalene gas and nitrogen are discharged from the gas vent of secondary condenser 3 in tail gas
The cold fluid pass and level-one tail gas after cooling for being passed through heat exchanger 2 afterwards carry out heat exchange, then by absorption pipeline 13 the
It is passed through absorber 6 under the action of one blower 4 and carries out adsorption treatment, decahydronaphthalene gas is adsorbed device 6 and adsorbs in tail gas, in tail gas
Nitrogen is recycled as desorption gas.
The oxygen content being equipped in the first oxygen concentration detector 11 monitoring absorption pipeline 13 in pipeline 13 is adsorbed, is inhaled as judgement
Whether attached pipeline 13 and absorber bed oxygen content control foundation in safe range, while the oxygen controlled in recycling nitrogen contains
Amount guarantees nitrogen gas purity.
Through cooling through second level in 2 cold fluid pass of level-one tail gas after cooling and heat exchanger in 2 zone of heat liberation of heat exchanger
Tail gas afterwards carries out heat exchange, on the one hand reduces the temperature of tail gas after level-one cooling, i.e., high concentration decahydronaphthalene tail gas is in level-one
Primary cooling procedure is increased again between cooling and second level is cooling, the cooling energy consumption of second level is reduced, on the other hand increases two
The temperature of tail gas, the tail gas for avoiding temperature too low enter the bad problem of adsorption effect caused by absorber 6 after grade is cooling.
2) decahydronaphthalene solvent is desorbed
It, first will be by the sky in the nitrogen displacement purging pipeline and absorber of room temperature in step 1) after 6 adsorption saturation of absorber
Gas, then nitrogen is passed through in absorber 2 through the second blower 8 after being heated to 200 DEG C by heater 7 and carries out desorption processing, is desorbed
It is molten into second to be condensed into decahydronaphthalene solvent for decahydronaphthalene gas after the nitrogen of decahydronaphthalene gas and high temperature is cooled down by condenser 9 afterwards
Agent slot 10, the nitrogen after cooling passes through again is passed through circulation desorption decahydro in absorber 6 by the way that pipeline 14 is desorbed after heater 7 heats
Naphthalene is desorbed in pipeline 14 and is equipped with oxygen content in the second oxygen concentration detector 12 monitoring desorption pipeline 14.
When 9 condensate liquid mouth condensation of device to be condensed flows out, stop heater 7, after circulating nitrogen gas is cooled down by condenser 9
It is passed directly into absorber 6 and cools down to absorber, when 6 temperature of device to be adsorbed is down to 40 DEG C or so, the second blower 8 is closed, and is entered
Standby mode.
One embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of processing method of high concentration decahydronaphthalene tail gas, which is characterized in that comprising steps of
1) condensation adsorption handles high concentration decahydronaphthalene tail gas
High concentration decahydronaphthalene tail gas is cold through secondary condenser (3) second level again first after first-stage condenser (1) level-one cooling treatment
But it handles, most of decahydronaphthalene gas is condensed into decahydronaphthalene liquid solvent in tail gas, fraction decahydronaphthalene gas and nitrogen in tail gas
Gas is passed through in absorber (6) by adsorbing pipeline (13), and decahydronaphthalene gas is adsorbed device (6) absorption, and nitrogen is as desorption gas
It recycles；
2) decahydronaphthalene solvent is desorbed
After absorber (6) adsorption saturation, the nitrogen of step 1) is passed through in absorber (6) after being heated by heater (7) to be taken off
Attached processing, decahydronaphthalene gas is condensed into decahydronaphthalene after the nitrogen of decahydronaphthalene gas and high temperature is cooled down by condenser (9) after desorption
Solvent enters the second flux bath (10), and the nitrogen after cooling is passed through after passing through heater (7) heating again by the way that pipeline (14) are desorbed
Circulation desorption decahydronaphthalene in absorber (6)；
3) absorber cools down
When device (9) condensate liquid mouth to be condensed is flowed out without decahydronaphthalene solvent, stop heater (7), circulating nitrogen gas passes through condenser (9)
It is passed directly into after cooling in absorber (6) and cools down to absorber.
2. the processing method of high concentration decahydronaphthalene tail gas according to claim 1, which is characterized in that in the step 1),
Heat exchanger (2) are equipped between first-stage condenser (1) and secondary condenser (3), high concentration decahydronaphthalene tail gas is condensed through level-one first
Level-one tail gas after cooling, is then passed through the zone of heat liberation of heat exchanger (2), is finally passed through two by device (1) level-one cooling treatment
Grade condenser (3) carries out second level cooling treatment, the tail gas after second level cooling treatment be passed through the cold fluid pass of heat exchanger (2) with
It is passed through in absorber (6) and carries out at absorption again after level-one tail gas progress heat exchange after cooling in heat exchanger (2) zone of heat liberation
Reason.
3. the processing method of high concentration decahydronaphthalene tail gas according to claim 1 or 2, which is characterized in that the step 1),
Adsorb the oxygen content being equipped in the first oxygen concentration detector (11) monitoring absorption pipeline (13) in pipeline (13)；The step 2),
Nitrogen at room is first replaced into the air in purging pipeline and absorber (6) before desorption processing, is set in the desorption pipeline (14)
There is oxygen content in the second oxygen concentration detector (12) monitoring desorption pipeline (14).
4. the processing method of high concentration decahydronaphthalene tail gas according to claim 1, which is characterized in that the high concentration decahydro
Processing unit realization of the processing method of naphthalene tail gas by high concentration decahydronaphthalene tail gas, the processing of the high concentration decahydronaphthalene tail gas
Device includes first-stage condenser (1), heat exchanger (2), secondary condenser (3), the first flux bath (5), absorber (6), heater
(7), condenser (9), the second flux bath (10)；The gas vent of first-stage condenser (1) by pipeline successively with heat exchanger (2)
Zone of heat liberation is connected to secondary condenser (3), and the solvent outlet of secondary condenser (3) is connect with the first flux bath (5), second level
The gas vent of condenser (3) passes through absorption pipeline (13) after connecting with the cold fluid pass of heat exchanger (2) and is passed through absorber (6)
In；The offgas outlet (6.2) of absorber (6) is successively connect with heater (7) and condenser (9), the solvent outlet of condenser (9)
It is connect with the second flux bath (10), the gas vent of condenser (9) passes through desorption pipeline (14) and inhales after connecting with heater (7)
The desorption air inlet (6.3) of adnexa (6) is connected to.
5. a kind of processing unit of high concentration decahydronaphthalene tail gas, which is characterized in that including first-stage condenser (1), heat exchanger (2),
Secondary condenser (3), the first flux bath (5), absorber (6), heater (7), condenser (9), the second flux bath (10)；Level-one
The gas vent of condenser (1) is successively connected to the zone of heat liberation of heat exchanger (2) and secondary condenser (3) by pipeline, and two
The solvent outlet of grade condenser (3) is connect with the first flux bath (5), gas vent and heat exchanger (2) of secondary condenser (3)
It is passed through in absorber (6) after cold fluid pass connection by adsorbing pipeline (13)；The offgas outlet (6.2) of absorber (6) is successively
It is connect with heater (7) and condenser (9), the solvent outlet of condenser (9) is connect with the second flux bath (10), condenser (9)
Gas vent connect with heater (7) after by be desorbed pipeline (14) be connected to the desorption air inlet (6.3) of absorber (6).
6. the processing unit of high concentration decahydronaphthalene tail gas according to claim 5, which is characterized in that the first-stage condenser
It (1) is board-like, plate-fin or shell and tube condenser；The secondary condenser (3) is board-like, plate-fin or shell and tube condenser.
7. the processing unit of high concentration decahydronaphthalene tail gas according to claim 5, which is characterized in that the absorber (6)
Adsorbent material be Carbon fibe, activated carbon, honeycomb carbon, molecular sieve or resin adsorption material.
8. the processing unit of high concentration decahydronaphthalene tail gas according to claim 5, which is characterized in that the absorption pipeline
(13) the first oxygen concentration detector (11) is equipped in.
9. the processing unit of high concentration decahydronaphthalene tail gas according to claim 5, which is characterized in that the desorption pipeline
(14) the second oxygen concentration detector (12) is equipped in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811148918.5A CN109289226B (en) | 2018-09-29 | 2018-09-29 | Method and device for treating high-concentration decalin tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811148918.5A CN109289226B (en) | 2018-09-29 | 2018-09-29 | Method and device for treating high-concentration decalin tail gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109289226A true CN109289226A (en) | 2019-02-01 |
| CN109289226B CN109289226B (en) | 2024-04-05 |
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ID=65161148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811148918.5A Active CN109289226B (en) | 2018-09-29 | 2018-09-29 | Method and device for treating high-concentration decalin tail gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN109289226B (en) |
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