CN103349895B - The device of a kind of chemically based absorbing and removing vikane and technique - Google Patents
The device of a kind of chemically based absorbing and removing vikane and technique Download PDFInfo
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- CN103349895B CN103349895B CN201310278583.XA CN201310278583A CN103349895B CN 103349895 B CN103349895 B CN 103349895B CN 201310278583 A CN201310278583 A CN 201310278583A CN 103349895 B CN103349895 B CN 103349895B
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- Prior art keywords
- vikane
- gas
- chemical absorbing
- liquid
- absorbing tower
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- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical compound FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000126 substance Substances 0.000 claims abstract description 47
- 239000003513 alkali Substances 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000010521 absorption reaction Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 22
- 239000007791 liquid phase Substances 0.000 claims abstract description 19
- 239000012071 phase Substances 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 230000008676 import Effects 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 17
- 239000002912 waste gas Substances 0.000 claims abstract description 11
- 239000005864 Sulphur Substances 0.000 claims abstract description 10
- -1 sulphur acyl fluorides Chemical class 0.000 claims abstract description 10
- 239000007792 gaseous phase Substances 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 6
- 230000008025 crystallization Effects 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 230000008030 elimination Effects 0.000 claims description 10
- 238000003379 elimination reaction Methods 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical group [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000005935 Sulfuryl fluoride Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- GZUXJHMPEANEGY-UHFFFAOYSA-N bromomethane Chemical compound BrC GZUXJHMPEANEGY-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000002316 fumigant Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229940102396 methyl bromide Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses the device of a kind of chemically based absorbing and removing vikane and technique, including chemical absorbing tower and cyclic absorption alkali liquid tank, chemical absorbing tower includes gas phase import, gaseous phase outlet, fluid inlet and liquid-phase outlet, and gas phase import is connected with gas control valve, gas flowmeter and air-introduced machine；Cyclic absorption alkali liquid tank constitutes absorption liquid closed circuit with chemical absorbing tower fluid inlet, liquid-phase outlet, circulating pump, liquid control valve, fluid flowmeter；Described air-introduced machine is provided with stifling rear residual sulphur acyl fluorides waste gas suction inlet A, chemical absorbing tower connects the air discharge ports B of promising Ex-all vikane, described cyclic absorption alkali liquid tank be connected to vikane absorption reaction process produce salt loading after crystallization outlet C, described pump entry is connected to fresh alkali liquor supply port D。The invention has the beneficial effects as follows: present invention process flow process is simple, and energy consumption is low, vehicular structure is conducive to mobile process to fumigate residual sulfuryl fluoride gas。
Description
Technical field
The present invention relates to a kind of device removing vikane and technique, more specifically, it relates to device and the technique of a kind of chemically based absorbing and removing vikane。
Background technology
Vikane substitutes fumigant as methyl bromide, since The Dow Agrosciences, LLC.'s commercialization in 1961, being widely used in the stifling of the industries such as building industry, agricultural, grocery trade and inspection and quarantining for import/export, its advantage is mainly reflected in: diffusion permeability is strong, broad spectrum disinfestation, dosage are economized, residual quantity is low, parasite killing speed fast, scattered the gas time is short, low temperature is easy to use。
Along with the extensive use of vikane, its greenhouse effect and the harmfulness to the person increasingly receive the concern of people。Research discovery shows: vikane is a kind of strong greenhouse gas, and its greenhouse effect is 4800 times of carbon dioxide, and in air, vikane content is just increasing with the speed of annual 5%, and can exist in atmosphere about 36 years。Additionally, vikane toxicity can destroy nervus centralis, human health is produced to have a strong impact on by Long Term Contact, even results in death。
For remaining the process of sulfuryl fluoride gas after stifling, frequently with a kind of method be the mode ventilated, by the vikane toxic emission of residual to air。The method is contaminated environment not only, increases greenhouse effect, but also endangers the healthy of nearby residents。Therefore, exploitation new technique elimination residual sulphur acyl fluorides waste gas is very urgent。Chinese patent CN201010256651.9 discloses the method for a kind of nonequilibrium plasma elimination vikane, can effectively remove vikane waste gas, but energy consumption is big, and plasma discharge processes easily produces the problem of secondary pollution, and aerial discharge easily produces nitrogen oxides, ozone etc.。Chinese patent CN201110445113.9 discloses the method for a kind of plasmon coupling chemical absorbing elimination vikane, its principle is that first vikane is decomposed in plasma reactor Silicon fluoride. and sulfur dioxide, realize the elimination of vikane, the chemical absorbing of gaseous product is completed again in absorption tower, effectively avoid the secondary pollution problem that gas discharge produces, but there is complex process, problem that energy consumption is big。
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of efficiently, low energy consumption, the device of chemically based absorbing and removing vikane that filtration result is good and technique。
It is an object of the invention to be achieved through the following technical solutions。The device of this chemically based absorbing and removing vikane, including chemical absorbing tower and cyclic absorption alkali liquid tank, chemical absorbing tower includes gas phase import, gaseous phase outlet, fluid inlet and liquid-phase outlet, and gas phase import is connected with gas control valve, gas flowmeter and air-introduced machine；Cyclic absorption alkali liquid tank constitutes absorption liquid closed circuit with chemical absorbing tower fluid inlet, liquid-phase outlet, circulating pump, liquid control valve, fluid flowmeter；Described air-introduced machine is provided with stifling rear residual sulphur acyl fluorides waste gas suction inlet A, chemical absorbing tower connects the air discharge ports B of promising Ex-all vikane, described cyclic absorption alkali liquid tank be connected to vikane absorption reaction process produce salt loading after crystallization outlet C, described pump entry is connected to fresh alkali liquor supply port D。
As preferably: described chemical absorbing tower is packed tower, plate column, spray column or high-gravity rotating bed gas-liquid mass transfer (contact) equipment。
As preferably: the gas phase import of described chemical absorbing tower and liquid-phase outlet are arranged on the bottom of chemical absorbing tower。
As preferably: the gas phase import of described chemical absorbing tower and liquid-phase outlet are arranged on the top of chemical absorbing tower。
The elimination vikane technique of the device of this chemically based absorbing and removing vikane, step is as follows: carry through circulating pump, in cyclic absorption alkali liquid tank alkali liquor by liquid control valve and fluid flowmeter metering enter chemical absorbing tower alkali liquor inlet, through chemical absorbing tower alkali liquor export return to cyclic absorption alkali liquid tank recirculation；Carrying through air-introduced machine, after stifling, residual sulphur acyl fluorides waste gas absorbs by entering chemical absorbing tower through gas phase import after gas control valve and gas flowmeter metering, and the air of Ex-all vikane empties through chemical absorbing top of tower gaseous phase outlet。
As preferably: described alkali liquor is potassium hydroxide, sodium hydroxide and other alkali liquor。
As preferably: in described alkali liquor absorption process, in control cyclic absorption alkali liquid tank, the pH value of alkali liquor is more than 8, through crystallization after the salt loading that course of reaction produces。
The invention has the beneficial effects as follows: the present invention adopts chemical absorption process elimination vikane, and discharge gas after treatment reaches discharging standards。Vikane is discharged in air relative to current draft type and not only protects atmospheric environment by this invention, protects the healthy of people simultaneously。Additionally, present invention process flow process is simple, energy consumption is low, and vehicular structure is conducive to mobile process to fumigate residual sulfuryl fluoride gas。
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Description of reference numerals: air-introduced machine 1, chemical absorbing tower 2, gas phase import 2-1, gaseous phase outlet 2-2, fluid inlet 2-3, liquid-phase outlet 2-4, cyclic absorption alkali liquid tank 3, circulating pump 4, gas control valve 5, gas flowmeter 6, fluid flowmeter 7, liquid control valve 8。
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described further。Although the present invention will be described in conjunction with preferred embodiment, it should be understood that be not offered as limiting the invention in described embodiment。On the contrary, the present invention will contain the alternative, modified model and the equivalent that can be included in the scope of the present invention that appended claims limits。
Alkali liquor chemical absorbing vikane (SO2F2) process be undertaken in two steps: the first step, the vikane in gas phase is diffused into liquid phase；Second step, in liquid phase, vikane is fixed in solution with alkali liquor generation hydrolysis generation salt, as follows:
(2) SO2F2(liquid phase)+OH-(liquid phase) → HOSO2F2(liquid phase)+F-(liquid phase)
As shown in Figure 1, the device of this chemically based absorbing and removing vikane, including chemical absorbing tower 2 and cyclic absorption alkali liquid tank 3, B on chemical absorbing tower 2 is the air discharge ports of Ex-all vikane, described chemical absorbing tower 2 includes absorption tower body, gas phase import 2-1, gaseous phase outlet 2-2, fluid inlet 2-3 and liquid-phase outlet 2-4, described gas phase import 2-1 is connected with gas control valve 5, gas flowmeter 6 and air-introduced machine 1, and the A on air-introduced machine 1 is stifling rear residual sulphur acyl fluorides waste gas suction inlet；Described cyclic absorption alkali liquid tank 3 constitutes circulation loop of absorbent with chemical absorbing tower 2 fluid inlet 2-3, liquid-phase outlet 2-4, circulating pump 4, liquid control valve 8, fluid flowmeter 7, alkali liquor absorption agent recycles, C on cyclic absorption alkali liquid tank 3 is crystallization outlet after the salt loading that vikane absorption reaction process produces, and the D on circulating pump 4 entrance is fresh alkali liquor supply port。
Chemical absorbing tower 2 structural parameters: internal diameter 25mm dumped packing tower, filler is the ceramic raschig rings filler of diameter 3mm, packed height 1m；
Sodium hydroxide (NaOH) aqueous solution of chemical absorbent: 1mol/L；
Inlet gas concentration: air inlet vikane volumetric concentration is 0.5%, is equivalent to vikane formulation rate 20g/m in entry and exit container and goods deinsectization code (SN/T1281-2003) thereof3The gaseous phase volume concentration of rear residual sulphur acyl fluorides；
Gas analysis: utilizing the gas chromatogram GC9790 being furnished with FPD detector to analyze before and after sulfuryl fluoride gas chemical absorbing, detection sensitivity is 1ppm, lower than discharging standards≤5ppm；
Product liquid is analyzed: chromatography of ions；
The technique of this elimination vikane waste gas based on apparatus of the present invention, comprises the following steps:
(1) carrying through circulating pump 4, in cyclic absorption alkali liquid tank 3, alkali liquor enters the alkali liquor inlet 2-3 of chemical absorbing tower 2 by liquid control valve 8 and fluid flowmeter 7 metering, returns to cyclic absorption alkali liquid tank 3 recirculation through the alkali liquor outlet 2-4 of chemical absorbing tower 2；
(2) carry through air-introduced machine 1, after stifling, residual sulphur acyl fluorides waste gas absorbs by entering chemical absorbing tower 2 through gas phase import 2-1 after gas control valve 5 and gas flowmeter 6 metering, the air of Ex-all vikane exports 2-2 emptying through chemical absorbing tower 2 top gas phase, in mark: A is waste gas suction inlet, B is the air discharge ports of Ex-all vikane；
Operation result shows: the vikane of the chemical absorbing tower 2 of entrance can be absorbed completely, reaches harmless discharge, and the salt that absorption reaction produces is mainly NaF and NaSO2F；Because residual sulphur acyl fluorides exhaust gas concentration is low, in cyclic absorption alkali liquid tank 3, alkali liquor can use for a long time。
Claims (7)
1. the device of a chemically based absorbing and removing vikane, it is characterized in that: include chemical absorbing tower (2) and cyclic absorption alkali liquid tank (3), chemical absorbing tower (2) includes gas phase import (2-1), gaseous phase outlet (2-2), fluid inlet (2-3) and liquid-phase outlet (2-4), and gas phase import (2-1) is connected with gas control valve (5), gas flowmeter (6) and air-introduced machine (1)；Cyclic absorption alkali liquid tank (3) constitutes absorption liquid closed circuit with chemical absorbing tower (2) fluid inlet (2-3), liquid-phase outlet (2-4), circulating pump (4), liquid control valve (8), fluid flowmeter (7)；Described air-introduced machine (1) is provided with stifling rear residual sulphur acyl fluorides waste gas suction inlet A, the upper air discharge ports B connecting promising Ex-all vikane of chemical absorbing tower (2), described cyclic absorption alkali liquid tank (3) be connected to vikane absorption reaction process produce salt loading after crystallization outlet C, described circulating pump (4) entrance is connected to fresh alkali liquor supply port D。
2. the device of chemically based absorbing and removing vikane according to claim 1, it is characterised in that: described chemical absorbing tower (2) is packed tower, plate column, spray column or high-gravity rotating bed gas-liquid mass transfer (contact) equipment。
3. the device of chemically based absorbing and removing vikane according to claim 1, it is characterised in that: the gas phase import (2-1) of described chemical absorbing tower (2) and liquid-phase outlet (2-4) are arranged on the bottom of chemical absorbing tower (2)。
4. the device of chemically based absorbing and removing vikane according to claim 1, it is characterised in that: the gas phase import (2-1) of described chemical absorbing tower (2) and liquid-phase outlet (2-4) are arranged on the top of chemical absorbing tower (2)。
5. the elimination vikane technique adopting the device of chemically based absorbing and removing vikane described in claim 1, it is characterized in that: step is as follows: carry through circulating pump (4), in cyclic absorption alkali liquid tank (3) alkali liquor by liquid control valve (8) and fluid flowmeter (7) metering enter chemical absorbing tower (2) alkali liquor inlet (2-3), through chemical absorbing tower (2) alkali liquor export (2-4) return to cyclic absorption alkali liquid tank (3) recirculation；Carry through air-introduced machine (1), after stifling, residual sulphur acyl fluorides waste gas absorbs by entering chemical absorbing tower (2) through gas phase import (2-1) after gas control valve (5) and gas flowmeter (6) metering, and the air of Ex-all vikane empties through chemical absorbing top of tower gaseous phase outlet (2-2)。
6. elimination vikane technique according to claim 5, it is characterised in that: described alkali liquor is potassium hydroxide or sodium hydroxide。
7. elimination vikane technique according to claim 5, it is characterised in that: in described alkali liquor absorption process, in control cyclic absorption alkali liquid tank (3), the pH value of alkali liquor is more than 8, through crystallization after the salt loading that course of reaction produces。
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| CN201310278583.XA CN103349895B (en) | 2013-07-03 | 2013-07-03 | The device of a kind of chemically based absorbing and removing vikane and technique |
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| CN103349895A CN103349895A (en) | 2013-10-16 |
| CN103349895B true CN103349895B (en) | 2016-06-22 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2018511461A (en) * | 2015-02-25 | 2018-04-26 | ジェネラ リミテッド | Fumigant gas capture method and apparatus |
| CN105985910A (en) * | 2015-03-05 | 2016-10-05 | 华东理工大学 | Novel method and process for carbon supplement during microalgae culture |
| CN105344221B (en) * | 2015-10-26 | 2018-02-27 | 浙江工业大学 | The collection and treatment device of residual vikane is with collecting handling process in a kind of stifling rear container |
| CN111978218A (en) * | 2019-05-24 | 2020-11-24 | 上海博璞诺科技发展有限公司 | Synthetic method of florfenicol |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200942331Y (en) * | 2006-06-06 | 2007-09-05 | 施耀 | Flue gas denitrification device |
| KR101096179B1 (en) * | 2011-10-06 | 2011-12-22 | (주)대우건설 | Apparatus for capture of carbon dioxide using calcium hydroxide through head pressing |
| CN202113768U (en) * | 2011-06-13 | 2012-01-18 | 天津东方环境工程有限责任公司 | Circulating desulfurizing reaction tower for waste alkali liquor |
| CN203379796U (en) * | 2013-07-03 | 2014-01-08 | 浙江工业大学 | Device for desorbing sulfuryl fluoride based on chemical absorption |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114382B (en) * | 2011-01-14 | 2013-06-19 | 浙江诚信医化设备有限公司 | Method for separating and recovering fumigation medicine |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200942331Y (en) * | 2006-06-06 | 2007-09-05 | 施耀 | Flue gas denitrification device |
| CN202113768U (en) * | 2011-06-13 | 2012-01-18 | 天津东方环境工程有限责任公司 | Circulating desulfurizing reaction tower for waste alkali liquor |
| KR101096179B1 (en) * | 2011-10-06 | 2011-12-22 | (주)대우건설 | Apparatus for capture of carbon dioxide using calcium hydroxide through head pressing |
| CN203379796U (en) * | 2013-07-03 | 2014-01-08 | 浙江工业大学 | Device for desorbing sulfuryl fluoride based on chemical absorption |
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