CN107485971B - A kind of recyclable device and its recovery process remaining fumigant vikane - Google Patents
A kind of recyclable device and its recovery process remaining fumigant vikane Download PDFInfo
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- CN107485971B CN107485971B CN201710630834.4A CN201710630834A CN107485971B CN 107485971 B CN107485971 B CN 107485971B CN 201710630834 A CN201710630834 A CN 201710630834A CN 107485971 B CN107485971 B CN 107485971B
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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Abstract
The present invention relates to a kind of recyclable devices and its recovery process for remaining fumigant vikane, which includes Physical Absorption tower, desorber, vacuum pump, feed pump, circulating pump, fluid reservoir, air-introduced machine, gas compressor, air accumulator etc..The present invention is recycled residual fumigant vikane in Physical Absorption tower, the sulfonyl Funing tablet qualified discharge after treatment and purification using biodiesel as physical absorbent；Biodiesel rich in vikane vacuum desorption in desorber regenerates, and returns fluid reservoir and recycles, the high concentration sulfuryl fluoride gas that Vacuum solutions are sucked out is stored into air accumulator through compression.Compared with tradition ventilation processing mode, the beneficial effects of the present invention are: realizing the emission reduction and recycling and reusing of greenhouse gases vikane.The present invention have many advantages, such as process flow it is simple, efficiently, stability it is good, it is environmentally protective, do not generate secondary pollution.
Description
Technical field
The present invention relates to vikane recovery technology fields, and in particular to it is a kind of remain fumigant vikane recyclable device and
Its recovery process.
Background technique
Fumigant vikane because its with diffusion permeability strong, broad spectrum disinfestation, efficiently, low-residual, low temperature it is easy to use, zero
The features such as ozone-depleting, substitutes traditional fumigant methyl bromide and is applied to container, warehouse, silo, soil more and more widely
Etc. every field it is stifling, it is stifling after remaining vikane be directly discharged in atmosphere.
However, correlative study, which shows fumigant vikane not only, has strong greenhouse effects, it can also be to the health of people
Generation seriously affects.But due to being difficult to be developed in the novel fumigant short time and come into operation, fumigant sulphur at present
Acyl fluorides just expanded application in the world.The Ministry of Agriculture has approved vikane in November, 2006 applied to grain fumigating
Agriculture chemical registration.Even to this day, China has become the use big country of fumigant vikane.2016, the vikane dosage in China
About 1500 tons, about 7,200,000 tons of emission greenhouse atmospheric carbon dioxide are equivalent to, and the dosage of vikane is just in cumulative year after year.
If things go on like this, a large amount of vikane is discharged into atmosphere, will be produced serious influence to environmental protection and human health.Cause
This, exploitation new technology processing residual fumigant vikane is very urgent.
Chinese patent CN201010256651.9, CN201110445113.9, CN201320395223.3 are successively disclosed
Three kinds of nonequilibrium plasma method, plasmon coupling chemical absorption method, lye chemical absorption method removings remain fumigant sulfonyl
The method of fluorine has been all made of the mode of destructive processing to realize the harmless treatment of residual fumigant vikane, cannot achieve
The recycling and reusing of vikane.Chinese patent CN201410477152.0 discloses a kind of utilization nitration stryrene divinyl
Base benzene copolymer porous microsphere adsorbs the method for eliminating vikane, but that there is adsorbent adsorption capacities is small, inhales for this method
The problems such as attached dose of easy in inactivation, complicated adsorbent preparation.
Biodiesel is a kind of novel green absorbent that can be matched in excellence or beauty with ionic liquid, and main component is fatty acid methyl
Ester, hardly sulfur-bearing, aromatic hydrocarbons, have viscosity is low, boiling point is high, steam forces down, it is nontoxic, environmentally protective, do not generate secondary pollution etc.
Advantage, discarded biodiesel absorbent are still used as fuel.Currently, biodiesel is mainly used for first as Green absorption agent
The processing of the volatile organic waste gas such as benzene, butanone, but the processing for fumigating exhaust gas vikane has not been reported.
Summary of the invention
In order to solve deficiency in the prior art, present invention offer simple process, efficient, stability is good, environmentally protective
A kind of recyclable device and its recovery process remaining fumigant vikane.
Technical scheme is as follows:
A kind of recyclable device remaining fumigant vikane, which is characterized in that including Physical Absorption tower and Physical Absorption tower
The desorber of connection, the fluid reservoir being arranged between Physical Absorption tower and desorber and the air accumulator being connected to desorber, it is described
The gas phase import of Physical Absorption tower lower part connects setting air-introduced machine by pipeline, and the air-introduced machine accesses residual fumigant by pipeline
Sulfonyl fluorine source gas；The fluid reservoir is provided with biodiesel absorbent, and fluid reservoir outlet at bottom connects setting charging by pipeline
Pump, feed pump is connect by pipeline with Physical Absorption tower upper aqueous phase import, so that biodiesel absorbent is delivered to physics
It is absorbed in absorption tower；The gaseous phase outlet of the Physical Absorption top of tower is connected to by pipeline with ambient atmosphere, the physics
Absorb the bottom of the tower liquid-phase outlet connects setting delivery pump by pipeline, and the delivery pump passes through the liquid of pipeline and desorber top
Import connection, gas vent at the top of the desorber by pipeline connection setting vacuum pump, the vacuum pump by pipeline and
Air inlet connection at the top of air accumulator, constitutes vikane recovery pipe；Gas compression is equipped between the vacuum pump and air accumulator
Machine, air accumulator top gas outlet are connected with stifling pipeline；It is equipped with circulating pump between the desorber and fluid reservoir, and passes through circulation
The liquid outlet for desorbing tower bottom is connected to by pump with fluid reservoir upper inlet.
As preferred: the Physical Absorption tower and desorber are packed tower, plate column, spray column or high-gravity rotating bed.
A kind of recovery process of the residual fumigant vikane, which comprises the steps of:
1) absorption cleaning of vikane: it is defeated by the gas phase import of Physical Absorption tower lower part that air-introduced machine will remain fumigant vikane
Send to Physical Absorption tower, at the same feed pump by the biodiesel absorbent in fluid reservoir by Physical Absorption tower upper aqueous phase import
It is delivered in Physical Absorption tower and absorption cleaning is carried out to vikane, purification gas is discharged big by Physical Absorption top of tower gaseous phase outlet
Gas；
2) recycling of vikane: the biodiesel absorbent in step 1) in Physical Absorption tower rich in vikane is inhaled by physics
The outflow of tower liquid-phase outlet is received, is conveyed through delivery pump, progress vacuum desorption regeneration in desorber is entered by desorber liquid-inlet；Through
Vacuum pump conveying, the high concentration sulfuryl fluoride gas desorbed are exported by stripper gas and are discharged, stored up after gas compressor compresses
It is stored in air accumulator；
3) circulation of absorbent: the biodiesel absorbent in desorber after regeneration is flowed out by desorber liquid outlet, is passed through
Circulating pump conveying, it is recycled to return to fluid reservoir.
As preferred: the biodiesel absorbent includes fatty acid methyl ester, fatty-acid ethyl ester and fatty acid methyl ester, rouge
The compound of fat acetoacetic ester and antioxidant.
As preferred: in the step 1) in vikane Physical Absorption tower absorption process be it is at room temperature and atmospheric ionization under the conditions of into
Row.
As preferred: the operation temperature in the step 2 in desorber in desorption process is room temperature, and operation absolute pressure is less than
10 kPa。
Beneficial effects of the present invention: 1) present invention is big with absorptive capacity, recyclable to make using biodiesel as absorbent
With, performance is stable, nontoxic, clean and environmental protection, does not generate the advantages that secondary pollution.
2) present invention is carried out while realization to residual vikane processing by physical absorption tower and desorber combination
The recycling of vikane and the regeneration of biodiesel absorbent.
3) present invention will remain vikane relative to current draft type and be discharged into atmosphere and not only protect in container
The health of atmospheric environment and people, and vikane is recycled, avoid the waste of resource.The present invention has technique
Process is simple, efficiently, stability it is good, it is environmentally protective, do not generate the advantages that secondary pollution.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the gaseous-mass spectrography comparative result figure of present invention desorption front and back biodiesel；
In figure: 1- air-introduced machine, 2- Physical Absorption tower, 2A- liquid-phase outlet, 2B- gas phase import, 2C- gaseous phase outlet, 2D- liquid
Phase import, 3- feed pump, 4- delivery pump, 5- fluid reservoir, 5A- outlet at bottom, 5B- upper inlet, 6- circulating pump, 7- desorber,
7A- liquid outlet, 7B- liquid-inlet, 7C- gas vent, 8- vacuum pump, 9- gas compressor, 10- air accumulator, 10A- air inlet
Mouthful, the gas outlet 10B-.
Specific embodiment
The present invention is described further with embodiment with reference to the accompanying drawings of the specification, but protection scope of the present invention is not
It is only limitted to this.
As shown in Figure 1, the recyclable device of residual fumigant vikane of the invention, including air-introduced machine 1, Physical Absorption tower 2,
Liquid-phase outlet 2A, gas phase import 2B, gaseous phase outlet 2C, fluid inlet 2D, feed pump 3, delivery pump 4, fluid reservoir 5, outlet at bottom
5A, upper inlet 5B, circulating pump 6, desorber 7, liquid outlet 7A, liquid-inlet 7B, gas vent 7C, vacuum pump 8, gas pressure
Contracting machine 9, air accumulator 10, air inlet 10A, gas outlet 10B.Desorber 7 is connected to Physical Absorption tower 2, and fluid reservoir 5 is arranged in physics
Between absorption tower 2 and desorber 7, air accumulator 14 is connected to desorber 11, and 2 lower part gas phase import 2B of Physical Absorption tower passes through pipeline
Connection setting air-introduced machine 1, air-introduced machine 1 access residual fumigant sulfonyl fluorine source gas by pipeline；Fluid reservoir 5 is provided with biodiesel
Absorbent, 5 outlet at bottom 5A of fluid reservoir connect setting feed pump 3 by pipeline, and feed pump 3 passes through pipeline and Physical Absorption tower 2
Upper aqueous phase import 2D connection, absorbs so that biodiesel is delivered in Physical Absorption tower 2；2 top of Physical Absorption tower
Gaseous phase outlet 2C be connected to ambient atmosphere by pipeline, 2 bottom liquid phases of Physical Absorption tower export 2A and pass through pipeline connection setting
Delivery pump 4, delivery pump 4 are connect by pipeline with the liquid-inlet 7B on 7 top of desorber, the gas vent 7C at 7 top of desorber
Setting vacuum pump 8 is connected by pipeline, vacuum pump 8 is connect by pipeline with 10 top air inlet 10A of air accumulator, and vikane is constituted
Recovery pipe is equipped with gas compressor 9 between vacuum pump 8 and air accumulator 10；10 top gas outlet 10B of air accumulator and fumigation tube
Road is connected, and realizes recycling and reusing；It is equipped with circulating pump 6 between desorber 7 and fluid reservoir 5, and passes through circulating pump 6 for desorber 7
The liquid outlet 7A of bottom is connected to 5 upper inlet 5B of fluid reservoir, is constituted biodiesel absorbent and is recycled circuit.
Steps are as follows for recovery process:
1) absorption cleaning of vikane: air-introduced machine 1 will remain fumigant vikane by the 2 lower part gas phase import of Physical Absorption tower
2B is delivered in Physical Absorption tower 2, at the same feed pump 3 by the biodiesel absorbent in fluid reservoir 5 by 2 top of Physical Absorption tower
Fluid inlet 2D is delivered in Physical Absorption tower 2 and carries out absorption cleaning to vikane, and purification gas is by 2 top gas of Physical Absorption tower
Mutually outlet 2C discharges atmosphere；
2) recycling of vikane: the biodiesel absorbent in step 1) in Physical Absorption tower 2 rich in vikane is by physics
2 liquid-phase outlet 2A of absorption tower outflow, conveys through delivery pump 4, is entered by 7 liquid-inlet 7B of desorber and carry out vacuum in desorber 7
Desorption and regeneration；It is conveyed through vacuum pump 8, the high concentration sulfuryl fluoride gas desorbed is discharged by 7 gas vent 7C of desorber, through gas
Compressor 9 is stored into air accumulator 10 after compressing；
3) circulation of absorbent: the biodiesel absorbent in desorber 7 after regeneration is flowed by 7 liquid outlet 7A of desorber
Out, it is conveyed through circulating pump 6, it is recycled to return to fluid reservoir 5.
Embodiment:
Using biodiesel as absorbent, (filler is glass bullet in the glass filler tower for the jacketed that internal diameter is 20 mm
Spring filler, bed stuffing height are 500 mm), using water bath with thermostatic control controlled at 30 DEG C, operating pressure is normal pressure, to volume
The residual fumigant vikane exhaust gas that concentration is 5000 ppm carries out absorption experiment.The result shows that: when fluid flow is 80 ml/
Min, when gas flow is 50 ml/min, through gas chromatographic analysis outlet vikane volumetric concentration less than 5 ppm, row up to standard
It puts.
(filler is glass spring filler, and bed stuffing height is in the glass filler tower for the jacketed that internal diameter is 20 mm
500 mm), it is 5-10 kPa using absolute pressure is operated in vacuum pump control tower, using water bath with thermostatic control controlled at 30 DEG C, to suction
Biodiesel absorbent after receiving vikane carries out vacuum desorption regeneration.The result shows that: biodiesel absorbs vikane process and is
Physical absorption process, absorbent can be regenerated by vacuum desorption.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (3)
1. a kind of recovery process for remaining fumigant vikane, which comprises the steps of:
1) absorption cleaning of vikane: air-introduced machine (1) will remain fumigant vikane by Physical Absorption tower (2) lower part gas phase import
(2B) is delivered in Physical Absorption tower (2), while feed pump (3) is inhaled the biodiesel absorbent in fluid reservoir (5) by physics
It receives tower (2) upper aqueous phase import (2D) to be delivered in Physical Absorption tower (2) to vikane progress absorption cleaning, purification gas is by object
It manages absorption tower (2) top gas phase outlet (2C) and discharges atmosphere；
2) recycling of vikane: the biodiesel absorbent in step 1) in Physical Absorption tower (2) rich in vikane is inhaled by physics
Tower (2) liquid-phase outlet (2A) outflow is received, is conveyed through delivery pump (4), desorber (7) are entered by desorber (7) liquid-inlet (7B)
Interior progress vacuum desorption regeneration；It is conveyed through vacuum pump (8), the high concentration sulfuryl fluoride gas desorbed is gone out by desorber (7) gas
Mouth (7C) discharge is stored into air accumulator (10) after gas compressor (9) compression；
3) circulation of absorbent: the biodiesel absorbent in desorber (7) after regeneration is flowed by desorber (7) liquid outlet (7A)
Out, it is conveyed through circulating pump (6), it is recycled to return to fluid reservoir (5)；
The biodiesel absorbent be fatty acid methyl ester perhaps fatty-acid ethyl ester or fatty acid methyl ester, fatty-acid ethyl ester with
The compound of antioxidant；
In the step 1) vikane Physical Absorption tower (2) interior absorption process be it is at room temperature and atmospheric ionization under the conditions of carry out；
Operation temperature in the step 2 in desorber (7) interior desorption process is room temperature, operates absolute pressure less than 10 kPa.
2. residual fumigant sulfonyl used in the recovery process of residual fumigant vikane according to claim 1
The recyclable device of fluorine, which is characterized in that including Physical Absorption tower (2), the desorber (7) being connected to Physical Absorption tower (2), setting
Fluid reservoir (5) between Physical Absorption tower (2) and desorber (7) and the air accumulator (10) being connected to desorber (7), the object
It manages absorption tower (2) lower part gas phase import (2B) and setting air-introduced machine (1) is connected by pipeline, the air-introduced machine (1) is connect by pipeline
Enter to remain fumigant sulfonyl fluorine source gas；The fluid reservoir (5) is provided with biodiesel absorbent, fluid reservoir (5) outlet at bottom
(5A) connects setting feed pump (3) by pipeline, and feed pump (3) passes through pipeline and Physical Absorption tower (2) upper aqueous phase import
(2D) connection, absorbs so that biodiesel absorbent is delivered in Physical Absorption tower (2)；The Physical Absorption tower (2)
The gaseous phase outlet (2C) at top is connected to by pipeline with ambient atmosphere, and Physical Absorption tower (2) the bottom liquid phases outlet (2A) is logical
Piping connection setting delivery pump (4), the delivery pump (4) are connected by pipeline and the liquid-inlet (7B) on desorber (7) top
It connects, the gas vent (7C) at the top of the desorber (7) connects setting vacuum pump (8) by pipeline, and the vacuum pump (8) passes through
Pipeline is connect with the air inlet (10A) at the top of air accumulator (10), constitutes vikane recovery pipe；The vacuum pump (8) and gas storage
Gas compressor (9) are equipped between tank (10), gas outlet (10B) is connected with stifling pipeline at the top of air accumulator (10)；The desorption
Circulating pump (6) are equipped between tower (7) and fluid reservoir (5), and pass through circulating pump (6) for the liquid outlet of desorber (7) bottom
(7A) is connected to fluid reservoir (5) upper inlet (5B).
3. a kind of recyclable device for remaining fumigant vikane according to claim 2, which is characterized in that the physics is inhaled
It receives tower (2) and desorber (7) is packed tower, plate column, spray column or high-gravity rotating bed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710630834.4A CN107485971B (en) | 2017-07-28 | 2017-07-28 | A kind of recyclable device and its recovery process remaining fumigant vikane |
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| CN201710630834.4A CN107485971B (en) | 2017-07-28 | 2017-07-28 | A kind of recyclable device and its recovery process remaining fumigant vikane |
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| CN107485971A CN107485971A (en) | 2017-12-19 |
| CN107485971B true CN107485971B (en) | 2019-06-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935286B (en) * | 2020-01-16 | 2022-03-01 | 浙江工业大学 | Method for absorbing residual fumigant sulfuryl fluoride by using ionic liquid composite bio-based solvent |
| CN111408236A (en) * | 2020-03-17 | 2020-07-14 | 上海汉洁环境工程有限公司 | Waste gas absorption liquid for volatile organic gas treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991007093A1 (en) * | 1989-11-09 | 1991-05-30 | Minato Company, Ltd. | Process involving sterilization step, product having bacteriocidal activity and process for preparing the same, fumigant, fumigation method, and bacteriocidal gas composition, and process and apparatus for preparing the same |
| CN101185825A (en) * | 2007-09-14 | 2008-05-28 | 江苏惠利特环保设备有限公司 | Oil gas recovery method and device using absorption method and membrane separating method integration technology |
| CN201162937Y (en) * | 2008-03-03 | 2008-12-10 | 天津市检验检疫科学技术研究院 | Bromomethane pressurization and condensation reclaimer |
| CN102114382A (en) * | 2011-01-14 | 2011-07-06 | 浙江诚信医化设备有限公司 | Method for separating and recovering fumigation medicine |
-
2017
- 2017-07-28 CN CN201710630834.4A patent/CN107485971B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991007093A1 (en) * | 1989-11-09 | 1991-05-30 | Minato Company, Ltd. | Process involving sterilization step, product having bacteriocidal activity and process for preparing the same, fumigant, fumigation method, and bacteriocidal gas composition, and process and apparatus for preparing the same |
| CN101185825A (en) * | 2007-09-14 | 2008-05-28 | 江苏惠利特环保设备有限公司 | Oil gas recovery method and device using absorption method and membrane separating method integration technology |
| CN201162937Y (en) * | 2008-03-03 | 2008-12-10 | 天津市检验检疫科学技术研究院 | Bromomethane pressurization and condensation reclaimer |
| CN102114382A (en) * | 2011-01-14 | 2011-07-06 | 浙江诚信医化设备有限公司 | Method for separating and recovering fumigation medicine |
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