CN203620495U - Device for recovering fumigant methyl bromide - Google Patents
Device for recovering fumigant methyl bromide Download PDFInfo
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- CN203620495U CN203620495U CN201320808410.XU CN201320808410U CN203620495U CN 203620495 U CN203620495 U CN 203620495U CN 201320808410 U CN201320808410 U CN 201320808410U CN 203620495 U CN203620495 U CN 203620495U
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- pipeline
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- absorption kettle
- kettle
- gas scrubbing
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Abstract
The utility model provides a device for recovering fumigant methyl bromide. The device mainly comprises an absorption kettle, a gas washing tank and a vacuum filter, wherein the inlet of the absorption kettle is connected with a fumigation chamber through a pipeline; the pipeline penetrates into the bottom of the absorption kettle; the outlet at the upper end of the absorption kettle is connected with the bottom of the gas washing tank through the pipeline; an opening at the upper end of the gas washing tank is connected with the fumigation chamber through the pipeline; an agitator is arranged on the top of the absorption kettle; a vortex blower is arranged on the pipeline between the gas washing tank and the fumigation chamber; an opening at the lower end of the absorption kettle is connected with the vacuum filter; an open pore at the upper end of the vacuum filter is connected with the vacuum pump through the pipeline. By adopting the device, an alcoholic solution of alkali containing iodate is taken as an absorbent, and the fumigated residual methyl bromide gas is absorbed. A field test proves that the absorption rate can be up to 95%. The device disclosed by the utility model has great environmental significance, and meanwhile, a reaction byproduct methyl bromide with wide use is obtained after absorption reaction. Thus, the production cost is saved to a certain extent.
Description
Technical field
The utility model relates to a kind of retracting device of fumigant Celfume.
Background technology
Celfume, claims again bromomethane or methyl bromide, colourless gas, molecular formula CH
3br, molecular weight 94.94, gas density 3.974g/L (20 ℃), low concentration odorlessness, high concentration is sweet taste slightly, slightly chloroform or ether smell.Celfume is a kind of halogenated hydrocarbon fumigant, flash at normal temperatures heavier-than-air gas, there is powerful diffusivity and permeability simultaneously, can effectively kill fungi in soil, bacterium, soil-borne disease poison, insect, dragonfly class, nematode, parasitic seed plant, rodent etc., there is strong fumigation action.Celfume is as fumigant, have that biologically active is high, effect rapidly, killing action is strong, use plurality of advantages such as not being subject to environment temperature restriction, stable chemical nature, penetration capacity are strong, applied range, therefore, Celfume has been most widely used fumigant in the world since starting application the forties in 20th century always.Be widely used in that the sterilization of soil disinfection, warehouse, building are stifling, plant quarantine, means of transport sterilization etc.
Although Celfume is a kind of good fumigant, be a kind of material damaging the ozone layer, and at present the Celfume in Fumigation Station is substantially all discharged in atmosphere after using, and has caused serious environmental disruption simultaneously.According to " Copenhagen amendment ", the use of methyl bromide fumigation agent will be eliminated in 2015 comprehensively.Therefore the substitute of distributing and find Celfume that reduces Celfume is the work that multinational scientist is occupied in.
For improving stifling efficiency, reduce Celfume and use and discharge, it is mixed with chloropicrin to improve fumigating effect that researchers have carried out employing Celfume, and use reduces the tests such as the seepage of Celfume without permeable membrane (VIF film).During the research of finding in addition Celfume substitute is also carried out always, as the test of the alternative medicaments such as vikane, hydrogen phosphide, carbonyl sulfide, expoxy propane is extensively carried out, but owing to being limited to the factors such as reagent cost, stifling efficiency, service condition, current nearly all test medicine all can not substitute Celfume completely.Therefore, Celfume also will be widely used as the efficient fumigant of one within a certain period of time, and the test of substitute, the processing of Celfume waste gas at present all awaits further research.
For the processing of Celfume waste gas, generally there are the methods such as combustion decomposition, catalytic decomposition, solvent absorption, adsorbent absorption.Wherein combustion method needs hot conditions, and power consumption is large; Catalysis method condition is stricter, and need to screen suitable catalyst; The advantage of absorption method is to carry out at normal temperatures, but the desorption manipulation of the regeneration of adsorbent, Celfume is more complicated, and it is higher that cost is recycled in pressurization; Solvent absorption requires lower to reaction condition, but absorb, afterproduct separates and recycling is to need to consider.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of retracting device of fumigant Celfume.
The retracting device of fumigant Celfume described in the utility model is mainly made up of absorption kettle, gas scrubbing tank, vacuum filter, absorption kettle entrance is connected with Fumigation Station by pipeline, pipeline gos deep into absorption kettle bottom, duct bottom is L shaped, the circular hole of dense arrangement is set on it, the outlet of absorption kettle upper end connects the bottom of gas scrubbing tank by pipeline, the upper end open of gas scrubbing tank connects Fumigation Station by pipeline; Absorption kettle top arranges mixer, and whirlpool blower fan is set on the pipeline between gas scrubbing tank and Fumigation Station; Absorption kettle lower ending opening is connected with vacuum filter, and the perforate of vacuum filter upper end is connected with vavuum pump by pipeline.
Preferably, on described pipeline, valve is all set.
Further preferred, described pipeline is PPR material.
According to one of the utility model embodiment, on described gas scrubbing tank and vacuum absorption device, vacuum meter is set respectively.
Preferably, described vacuum absorption device is PPR material.
According to another embodiment of the utility model, described mixer is frame type stirring machine.
The pipeline being passed into by Fumigation Station in absorption kettle, its bottom is L shaped, and the circular hole of dense arrangement is set on it, can increase the contact-making surface of fumigant Celfume and absorbent.
Adopt said apparatus, take the alkali alcosol containing salt compounded of iodine as absorbent, remaining methyl bromide gas after stifling is absorbed, through field demonstration, absorptivity can reach 95%.The utlity model has great environment protection significance, after absorption reaction, obtain having the byproduct of reaction KBr of extensive use simultaneously, saved to a certain extent production cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Fig. 1 is the structural representation of retracting device described in the utility model;
1 Fumigation Station, 2 absorption kettles, 3 gas scrubbing tanks, 4 mixers, 5 whirlpool blower fans, 6 vacuum filters, 7 vavuum pumps, 8 Pressure gauges, 9 valves in figure.
The specific embodiment
As shown in Figure 1, the retracting device of fumigant Celfume is mainly made up of absorption kettle 2, gas scrubbing tank 3, vacuum filter 6, absorption kettle 2 entrances are connected with Fumigation Station 1 by pipeline, pipeline gos deep into absorption kettle 2 bottoms, duct bottom is L shaped, the circular hole of dense arrangement is set on it, absorption kettle 2 upper end outlets connect the bottom of gas scrubbing tank 3 by pipeline, the upper end open of gas scrubbing tank 3 connects Fumigation Station 1 by pipeline, on the pipeline between gas scrubbing tank 3 and Fumigation Station 1, whirlpool blower fan 5 is set; Absorption kettle 2 lower ending openings are connected with vacuum filter 6, vacuum absorption device 6 be PPR material, vacuum filter 6 upper end perforates are connected with vavuum pump 7 by pipeline.Valve 9 is all set on all pipelines.Standard Fumigation Station 1 volume is 90m
3; Absorption kettle 2 volumes are 100L, and absorption kettle 2 is furnished with mixer 4, and mixer 4 is frame type stirring machine; Whirlpool blower fan 5 is 2RB730H16 type, air quantity 500 m
3/ h; Gas scrubbing tank 3 is carbon steel material, volume 500L; Vacuum filter 6 is PPR material (atactic copolymerized polypropene), and volume 150L is equipped with 2X-4 type vavuum pump 7, rate of air sucked in required 4L/s; All pipelines are PPR material.
Adopt above-mentioned retracting device, the ethanol solution of 20%KOH, 0.5KI will be added in absorption kettle, in gas scrubbing tank, add water, open mixer and whirlpool blower fan, and the valve being connected on pipeline with Fumigation Station, fumigant Celfume excessive in Fumigation Station enters absorption kettle from Fumigation Station, under agitation reacts with KOH; Ethanol in unreacted fumigant Celfume and absorbent enters gas scrubbing tank, water in gas scrubbing tank is by the ethanol solution absorption in mist, avoid entering in Fumigation Station, remaining gas enters Fumigation Station, proceed circulation absorb, reciprocation cycle until in gas Celfume concentration be down to tolerance interval.After absorption completes, close whirlpool blower fan, and the valve being connected on pipeline with Fumigation Station, open absorption kettle lower ending opening, the absorption liquid containing KBr in absorption kettle filters with vacuum filter, filters out solid brominated potassium, according to KBr weight and purity, calculate the uptake of Celfume.Liquid after filtration again moves in absorption kettle and uses after supplementing KOH, and suitably supplements ethanol according to absorption liquid damaed cordition.
Embodiment 2
As shown in Figure 1, the retracting device of fumigant Celfume is mainly made up of absorption kettle 2, gas scrubbing tank 3, vacuum filter 6, absorption kettle 2 entrances are connected with Fumigation Station 1 by pipeline, pipeline gos deep into absorption kettle 2 bottoms, duct bottom is L shaped, the circular hole of dense arrangement is set on it, absorption kettle 2 upper end outlets connect the bottom of gas scrubbing tank 3 by pipeline, the upper end open of gas scrubbing tank 3 connects Fumigation Station 1 by pipeline, on pipeline between gas scrubbing tank 3 and Fumigation Station 1, whirlpool blower fan 5 is set, absorption kettle 2 tops arrange mixer 4; Absorption kettle 2 lower ending openings are connected with vacuum filter 6, vacuum absorption device 6 be PPR material, vacuum filter 6 upper end perforates are connected with vavuum pump 7 by pipeline.Valve 9 is all set on all pipelines, and all pipelines are PPR material.
Claims (6)
1. the retracting device of a fumigant Celfume, it is characterized in that, mainly formed by absorption kettle, gas scrubbing tank, vacuum filter, absorption kettle entrance is connected with Fumigation Station by pipeline, pipeline gos deep into absorption kettle bottom, and duct bottom is L shaped, and the circular hole of dense arrangement is set on it, the outlet of absorption kettle upper end connects the bottom of gas scrubbing tank by pipeline, the upper end open of gas scrubbing tank connects Fumigation Station by pipeline; Absorption kettle top arranges mixer, and whirlpool blower fan is set on the pipeline between gas scrubbing tank and Fumigation Station; Absorption kettle lower ending opening is connected with vacuum filter, and the perforate of vacuum filter upper end is connected with vavuum pump by pipeline.
2. retracting device as claimed in claim 1, is characterized in that, valve is all set on described pipeline.
3. retracting device as claimed in claim 2, is characterized in that, described pipeline is PPR material.
4. retracting device as claimed in claim 1, is characterized in that, on described gas scrubbing tank and vacuum absorption device, vacuum meter is set respectively.
5. retracting device as claimed in claim 1, is characterized in that, described vacuum absorption device be PPR material.
6. retracting device as claimed in claim 1, is characterized in that, described mixer is frame type stirring machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320808410.XU CN203620495U (en) | 2013-12-07 | 2013-12-07 | Device for recovering fumigant methyl bromide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320808410.XU CN203620495U (en) | 2013-12-07 | 2013-12-07 | Device for recovering fumigant methyl bromide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203620495U true CN203620495U (en) | 2014-06-04 |
Family
ID=50807022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320808410.XU Withdrawn - After Issue CN203620495U (en) | 2013-12-07 | 2013-12-07 | Device for recovering fumigant methyl bromide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203620495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103638799A (en) * | 2013-12-07 | 2014-03-19 | 中华人民共和国德州出入境检验检疫局 | Recycling method and recycling device of fumigation agent methyl bromide |
| CN111751185A (en) * | 2020-07-07 | 2020-10-09 | 盐城工学院 | Soil microorganism fumigation device |
-
2013
- 2013-12-07 CN CN201320808410.XU patent/CN203620495U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103638799A (en) * | 2013-12-07 | 2014-03-19 | 中华人民共和国德州出入境检验检疫局 | Recycling method and recycling device of fumigation agent methyl bromide |
| CN103638799B (en) * | 2013-12-07 | 2016-04-06 | 中华人民共和国德州出入境检验检疫局 | A kind of recovery method of fumigant methyl bromide and retracting device |
| CN111751185A (en) * | 2020-07-07 | 2020-10-09 | 盐城工学院 | Soil microorganism fumigation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20141207 |
|
| EXPY | Termination of patent right or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |