CN203379796U - Device for desorbing sulfuryl fluoride based on chemical absorption - Google Patents
Device for desorbing sulfuryl fluoride based on chemical absorption Download PDFInfo
- Publication number
- CN203379796U CN203379796U CN201320395223.3U CN201320395223U CN203379796U CN 203379796 U CN203379796 U CN 203379796U CN 201320395223 U CN201320395223 U CN 201320395223U CN 203379796 U CN203379796 U CN 203379796U
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- China
- Prior art keywords
- liquid
- gas
- chemical absorbing
- vikane
- phase
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- 239000000126 substance Substances 0.000 title claims abstract description 50
- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical compound FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 22
- 239000005935 Sulfuryl fluoride Substances 0.000 title abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 35
- 239000007791 liquid phase Substances 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000003513 alkali Substances 0.000 claims abstract description 27
- 239000012071 phase Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000002912 waste gas Substances 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims description 20
- 239000005864 Sulphur Substances 0.000 claims description 7
- -1 sulphur acyl fluorides Chemical class 0.000 claims description 7
- 239000007792 gaseous phase Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 230000009102 absorption Effects 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 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
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241001274216 Naso Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 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
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion 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
- 238000004817 gas chromatography 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
- 239000012263 liquid product Substances 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
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 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
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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses a device for desorbing sulfuryl fluoride based on chemical absorption. The device comprises a chemical absorption tower and a circular-absorption alkali liquid tank, wherein the chemical absorption tower comprises a gas-phase inlet, an gas-phase outlet, a liquid-phase inlet and a liquid-phase outlet, and the gas-phase inlet is connected with a gas regulating valve, a gas flow meter and an induced draft fan; the circular-absorption alkali liquid tank, the liquid-phase inlet and liquid-phase outlet of the chemical absorption tower, a circulating pump, a liquid regulating valve and a liquid flow meter form an absorption liquid circulation loop; a stifled residual sulfuryl fluoride waste gas suction inlet A is formed in the induced draft fan, an air discharge outlet B for cleaning the sulfuryl fluoride is connected to the chemical absorption tower, an exhaust port C for discharging salt-saturated crystals produced in an absorption reaction process of the sulfuryl fluoride is connected to the circular-absorption alkali liquid tank, and a fresh alkali liquor supplementing hole D is connected to an inlet of the circulating pump. The device has the beneficial effects that the process is simple, and the energy consumption is low; by utilizing a vehicle-mounted structure, movable processing of the stifled residual sulfuryl fluoride gas can be facilitated.
Description
Technical field
The utility model relates to a kind of device that removes vikane, and more specifically, it relates to a kind of device that removes vikane based on chemical absorbing.
Background technology
Vikane substitutes fumigant as methyl bromide, since The Dow Agrosciences, LLC.'s commercialization in 1961, be 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, desinsection speed fast, the loose gas time is short, low temperature is easy to use etc.
Along with the extensive use of vikane, its greenhouse effects and the harmfulness of the person is more and more received to people's concern.Research is found to show: vikane is a kind of strong greenhouse gas, and its greenhouse effects are 4800 times of carbon dioxide, and in air, vikane content is just increasing with the speed in every year 5%, and can exist about 36 years in air.In addition, vikane toxicity can be destroyed nervous centralis, and Long Term Contact produces and has a strong impact on human health, even causes death.
For the processing of residual sulfuryl fluoride gas after stifling, the normal a kind of method adopted is the mode of ventilating, by residual vikane toxic emission in atmosphere.The method is contaminated environment not only, increases greenhouse effects, but also endangers the healthy of peripheral resident.Therefore, it is very urgent that development new technologies remove residual sulphur acyl fluorides waste gas.Chinese patent CN201010256651.9 discloses a kind of method that nonequilibrium plasma removes vikane, can effectively remove vikane waste gas, but energy consumption is large, and the plasma discharge process easily produces the problem of secondary pollution, and aerial discharge easily produces nitrogen oxide, ozone etc.Chinese patent CN201110445113.9 discloses a kind of method that plasmon coupling chemical absorbing removes vikane, its principle is that vikane first is decomposed into to ocratation and sulfur dioxide in plasma reactor, realize removing of vikane, complete again the chemical absorbing of gaseous product in absorption tower, the secondary pollution problem of effectively avoiding gas discharge to produce, but have complex process, problem that energy consumption is large.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, provide a kind of efficient, low energy consumption, filtration result good remove the device of vikane based on chemical absorbing.
The purpose of this utility model is achieved through the following technical solutions.This device that removes vikane based on chemical absorbing, comprise that chemical absorbing tower and circulation absorb alkali liquid tank, the chemical absorbing tower comprises gas phase import, gaseous phase outlet, liquid phase import and liquid-phase outlet, and the gas phase import is connected with gas control valve, gas flowmeter and air-introduced machine; Circulation absorbs alkali liquid tank and the import of chemical absorbing tower liquid phase, liquid-phase outlet, circulating pump, liquid control valve, fluid flowmeter form the absorption liquid closed circuit; Described air-introduced machine is provided with stifling rear residual sulphur acyl fluorides waste gas suction inlet A, connect the air discharge ports B of promising Ex-all vikane on the chemical absorbing tower, described circulation absorbs alkali liquid tank and is connected with the salt loading post crystallization outlet C that vikane absorption reaction process produces, and described pump entry is connected with fresh alkali lye and supplements a mouthful 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 beneficial effects of the utility model are: the utility model adopts chemical absorption process to remove vikane, and emission gases after treatment reaches discharging standards.This utility model is discharged to vikane in atmosphere and has not only protected atmospheric environment with respect to current draft type, has protected that the people's is healthy simultaneously.In addition, the utility model technological process is simple, and energy consumption is low, and the vehicular structure is conducive to the mobile stifling residual sulfuryl fluoride gas of processing.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Description of reference numerals: air-introduced machine 1, chemical absorbing tower 2, gas phase import 2-1, gaseous phase outlet 2-2, liquid phase import 2-3, liquid-phase outlet 2-4, circulation absorbs alkali liquid tank 3, circulating pump 4, gas control valve 5, gas flowmeter 6, fluid flowmeter 7, liquid control valve 8.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model is described in connection with preferred embodiment, should know, do not mean that the utility model is limited in described embodiment.On the contrary, the utility model will be contained alternative, modified and the equivalent in the scope of the present utility model that can be included in attached claims restriction.
Alkali lye chemical absorbing vikane (SO
2f
2) process carry out in two steps: the first step, the vikane in gas phase is diffused into liquid phase; Second step, in liquid phase, vikane and alkali lye generation hydrolysis generation salt are fixed in solution, as follows:
(1) SO
2f
2(gas phase)
sO
2f
2(liquid phase)
(2) SO
2f
2(liquid phase)+OH
-(liquid phase) → HOSO
2f
2(liquid phase)+F
-(liquid phase)
As shown in Figure 1, this device that removes vikane based on chemical absorbing, comprise that chemical absorbing tower 2 and circulation absorb alkali liquid tank 3, the air discharge ports that B on chemical absorbing tower 2 is the Ex-all vikane, described chemical absorbing tower 2 comprises absorption tower body, gas phase import 2-1, gaseous phase outlet 2-2, liquid phase import 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 residual sulphur acyl fluorides waste gas suction inlet after stifling; Described circulation absorbs alkali liquid tank 3 and forms circulation loop of absorbent with chemical absorbing tower 2 liquid phase import 2-3, liquid-phase outlet 2-4, circulating pump 4, liquid control valve 8, fluid flowmeter 7, the alkali liquor absorption agent recycles, the C that circulation absorbs on alkali liquid tank 3 is the salt loading post crystallization outlet that vikane absorption reaction process produces, and the D on circulating pump 4 entrances is that fresh alkali lye supplements mouth.
Chemical absorbing tower 2 structural parameters: internal diameter 25mm dumped packing tower, the ceramic raschig rings filler that filler is diameter 3mm, packed height 1m;
The NaOH of chemical absorbent: 1mol/L (NaOH) aqueous solution;
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 rules (SN/T1281-2003) thereof
3the gaseous phase volume concentration of rear residual sulphur acyl fluorides;
Gas analysis: before and after the sulfuryl fluoride gas chemical absorbing, utilize the gas-chromatography GC9790 that is furnished with the FPD detector to analyze, detection sensitivity is 1ppm, lower than discharging standards≤5ppm;
Liquid product analyses: chromatography of ions;
This technique that removes vikane waste gas based on the utility model device comprises the following steps:
(1) through circulating pump 4, carry, circulation absorbs alkali lye in alkali liquid tank 3 and is metered into the alkali liquor inlet 2-3 of chemical absorbing tower 2 by liquid control valve 8 and fluid flowmeter 7, gets back to circulation through the alkali lye outlet 2-4 of chemical absorbing tower 2 and absorbs alkali liquid tank 3 recirculation;
(2) through air-introduced machine 1, carry, after stifling, residual sulphur acyl fluorides waste gas enters 2 absorptions of chemical absorbing tower by gas control valve 5 and gas flowmeter 6 meterings by gas phase import 2-1, the air of Ex-all vikane is emptying through chemical absorbing tower 2 top gaseous phase outlet 2-2, in mark: A is the waste gas suction inlet, the air discharge ports that B is the Ex-all vikane;
Operation result shows: the vikane of the chemical absorbing tower 2 entered can be absorbed fully, reaches harmless discharge, and the salt that absorption reaction produces is mainly NaF and NaSO
2f; Because residual sulphur acyl fluorides exhaust gas concentration is low, circulation absorbs alkali lye in alkali liquid tank 3 and can use for a long time.
Claims (4)
1. a device that removes vikane based on chemical absorbing, it is characterized in that: comprise that chemical absorbing tower (2) and circulation absorb alkali liquid tank (3), chemical absorbing tower (2) comprises gas phase import (2-1), gaseous phase outlet (2-2), liquid phase import (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); Circulation absorbs alkali liquid tank (3) and forms the absorption liquid closed circuit with chemical absorbing tower (2) liquid phase import (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 that connects promising Ex-all vikane of chemical absorbing tower (2), described circulation absorbs alkali liquid tank (3) and is connected with the salt loading post crystallization outlet C that vikane absorption reaction process produces, and described circulating pump (4) entrance is connected with fresh alkali lye and supplements a mouthful D.
2. the device that removes vikane based on chemical absorbing according to claim 1 is characterized 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 that removes vikane based on chemical absorbing according to claim 1, it is characterized 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 that removes vikane based on chemical absorbing according to claim 1, it is characterized 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395223.3U CN203379796U (en) | 2013-07-03 | 2013-07-03 | Device for desorbing sulfuryl fluoride based on chemical absorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395223.3U CN203379796U (en) | 2013-07-03 | 2013-07-03 | Device for desorbing sulfuryl fluoride based on chemical absorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203379796U true CN203379796U (en) | 2014-01-08 |
Family
ID=49868329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320395223.3U Expired - Lifetime CN203379796U (en) | 2013-07-03 | 2013-07-03 | Device for desorbing sulfuryl fluoride based on chemical absorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203379796U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349895A (en) * | 2013-07-03 | 2013-10-16 | 浙江工业大学 | Device and process for removing sulfuryl fluoride based on chemical absorption |
-
2013
- 2013-07-03 CN CN201320395223.3U patent/CN203379796U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349895A (en) * | 2013-07-03 | 2013-10-16 | 浙江工业大学 | Device and process for removing sulfuryl fluoride based on chemical absorption |
| CN103349895B (en) * | 2013-07-03 | 2016-06-22 | 浙江工业大学 | The device of a kind of chemically based absorbing and removing vikane and technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140108 Effective date of abandoning: 20160622 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |