WO2006078184A1 - Procede de fabrication d'un gaz fumigene (et variantes), composition de fabrication d'un gaz fumigene (et variantes) et procede fumigene (et variantes) - Google Patents

Procede de fabrication d'un gaz fumigene (et variantes), composition de fabrication d'un gaz fumigene (et variantes) et procede fumigene (et variantes) Download PDF

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Publication number
WO2006078184A1
WO2006078184A1 PCT/RU2005/000018 RU2005000018W WO2006078184A1 WO 2006078184 A1 WO2006078184 A1 WO 2006078184A1 RU 2005000018 W RU2005000018 W RU 2005000018W WO 2006078184 A1 WO2006078184 A1 WO 2006078184A1
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WO
WIPO (PCT)
Prior art keywords
phosphine
composition
gas
fumigation
substance
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Application number
PCT/RU2005/000018
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English (en)
Russian (ru)
Inventor
Alexandr Alexandrovich Aryamkin
Original Assignee
Aryamkin Alexandr Alexandrovic
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aryamkin Alexandr Alexandrovic filed Critical Aryamkin Alexandr Alexandrovic
Priority to EA200700821A priority Critical patent/EA011354B1/ru
Priority to PCT/RU2005/000018 priority patent/WO2006078184A1/fr
Publication of WO2006078184A1 publication Critical patent/WO2006078184A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/26—Phosphorus; Compounds thereof
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3409—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor

Definitions

  • TECHNICAL FIELD The group of inventions is intended for the destruction of pests in food products, mainly in grain, tobacco, quarantine objects, containers, vehicles and premises intended for their processing, storage or long-term transportation, as well as for the destruction of field pests.
  • phosphine-based fumigant gas many methods and devices for producing phosphine-based fumigant gas are known.
  • One of the known methods for producing phosphine-based fumigant gas is a method in which a fumigant gas is produced by forcing a moistened diluent gas through a layer of metal phosphide. In this case, the moisture of the diluent gas interacts with the metal phosphide and a gas is produced - phosphine.
  • the disadvantage of such solutions is their complexity and high energy consumption, due to the need to pump gas preliminarily prepared in a special way (humidification, heating) through the device.
  • an important problem is the creation and maintenance of the fumigation facility, whether it is an elevator, a warehouse, a grain processing enterprise, or an open area inhabited by field pests, of the concentration field of the fumigant gas for a time sufficient to accumulate an effective dose of the toxic effect of the fumigant gas on insect pests anywhere in the fumigation facility.
  • compositions for its implementation and methods of fumigation are solutions that implement the application of Germany N ° 3047373, MKUCOI D 25/06 - 1982; Prospectus for the company Degessh GMBH, Wondersublik, Deutschapd, 1985. They describe tablet preparations based on metal phosphides, which, when in contact with ambient air, produce phosphine gas and diluent gases - carbon dioxide and ammonia.
  • the method provides the production of a fumigant gas in the form of a mixture of phosphine with carbon dioxide and ammonia and involves the use of metal phosphide, ammonium carbate, a binder and moisture as initial reagents.
  • the metal phosphide, binder and ammonium carbate are pre-mixed, structured in the form of geometric shapes (tablets, balls, etc.) and the resulting structured composition is contacted with ambient air.
  • the ambient air moisture interacts with the structured composition and, as a result of the chemical interaction of moisture with the metal phosphide, phosphine gas is produced, and with ammonium carbate, carbon dioxide and ammonia are produced.
  • a device for generating a fumigant gas is an airtight shell - a bottle having an overlapping opening (bottle neck with a twisting stopper).
  • a composition for generating a phosphine-based fumigant gas includes mixed metal phosphide, ammonium carbate and a binder.
  • the fumigation method involves the inclusion of a device for generating a fumigant gas by contacting the structured composition with ambient air, manually distributing the individual structural units of the composition, for example tablets, as uniformly as possible over the fumigated object, the interaction of the tablets with ambient air moisture to produce phosphine and diluent gases and filling the entire volume of the fumigated object with phosphine gas.
  • compositions for example, tablets
  • the central part of the tablet does not decompose due to the fact that it is screened by the decomposition products of its peripheral layers, as well as to the possibility of creating a higher concentration of phosphine gas in the air than the one at which spontaneous combustion of a mixture of air with phosphine (26 g / m 3 ) occurs, which made the authors composition to introduce into its composition a substance that, like metal phosphide, interacts with air moisture, but does not produce phosphine, but phosphine diluent gases (carbon dioxide and ammonia) - this is ammonium carbate.
  • phosphine diluent gases carbon dioxide and ammonia
  • the exclusion from the composition of the composition of a substance that emits diluent gases (ammonium carbamate) when interacting with air moisture, and the introduction of a substance that slows the release of phosphine gas from the composition, along with the structuring of the composition, ensures that the phosphine gas is diluted with ambient air to such an extent which excludes the possibility of creating a phosphine gas concentration exceeding the self-ignition limit (26 g / m3) in the thickness of the air layer, in which a chain reaction of oxidation of phosphine by oxygen with air at its real humidity can develop, which leads to a reduction in the cost of the composition and a decrease in the mass of the composition, which must be distributed over the object of fumigation.
  • a substance that emits diluent gases ammonium carbamate
  • the technical result of the invention is to ensure the efficiency of fumigation of empty rooms with poor sealing, reducing the consumption of phosphine gas, eliminating the dependence on ambient air humidity, simplifying the implementation of fumigation, including shipboard, increasing its environmental friendliness, making it cheaper, and expanding the scope of fumigation phosphine gas in open spaces, including for the destruction of field pests.
  • the specified technical result is achieved as follows.
  • a substance inhibiting phosphide interaction is introduced into the composition metal with moisture in the ambient air, mix it with the composition and disperse it in the process of contacting the composition with the ambient air.
  • the composition containing the phosphine in the adsorbed state is contacted and the substance slowing the release of phosphine from the adsorbed state with the ambient air, in the process of contacting it with the ambient air, the composition is dispersed and phosphine is obtained .
  • a substance that inhibits the release of phosphine in an adsorbed state may contain phosphine in an absorbed state.
  • the composition containing phosphine in the absorbed state is contacted with ambient air, in the process of its contact with ambient air, it is dispersed to produce phosphine.
  • Composition for generating fumigant gas based phosphine comprising a metal phosphide according to the invention further comprises a substance that slows down the interaction of metal phosphide with ambient air moisture, the metal phosphide and a substance that slows down the interaction of metal phosphide with ambient air moisture are taken in ratios that allow the composition to disperse to aerosol particles.
  • the composition for producing a phosphine-based fumigant gas according to the second embodiment contains phosphine in an adsorbed state and a substance that slows down the process of releasing phosphine in an adsorbed state, the substance containing phosphine in an adsorbed state and a substance that slows down the production of phosphine are taken in ratios allowing disperse the composition.
  • a substance that inhibits the release of phosphine in an adsorbed state may contain phosphine in an absorbed state.
  • composition for producing a phosphine-based fumigant gas according to the third embodiment is characterized in that it contains phosphine in an absorbed state with the possibility of dispersing it.
  • the contacting process the composition is dispersed, filled the fumigation object dispersed by the composition provides for the placement of particles of the dispersed composition on the surfaces of the fumigation object due to the diffusion of the particles of the composition and / or due to inertial forces to ensure the production of phosphine gas using each particle located on the surfaces of the composition and create a concentration field of the fumigant gas with the maximum phosphine gas concentration at the surface of the fumigation object.
  • a dispersed substance capable of adsorbing and / or absorb phosphine gas from the volume in the process of creating a phosphine gas concentration field in the fumigation object, a dispersed substance capable of adsorbing and / or absorb phosphine gas from the volume, ensuring that phosphine gas is absorbed from the volume by particles of the dispersed substance, placing particles of the dispersed substance on the surface fumigation object and creating a concentration field of phosphine gas with a maximum value of phosphine gas concentration at the surfaces of the fumigation object.
  • a unit is introduced into the device for producing fumigant gas, which includes a sealed casing with a blocked opening, which disperses it during the process of contacting the composition with ambient air, and connect it to the sealed casing with blocked channels.
  • a device for generating a phosphine-based fumigant gas contains a sealed container, which is connected to a dispersing unit using an overlapping channel, which disperses the composition to particles of 20 microns or less for the predominantly diffusion principle of deposition of particles of the composition on the surface or to particles larger than 20 microns inertial mechanism of deposition of particles on the surface.
  • the operator includes a dispersion unit and opens an overlapping channel connecting the sealed container with the dispersion unit.
  • the composition through the channel due to the injection effect or due to pressurization enters the dispersion unit, disperses and contacts the ambient air, as a result of which phosphine gas begins to be released.
  • the method of fumigation using this device is as follows.
  • Dispersed composition obtained as described in the previous paragraph if its degree dispersion of 20 microns or less, is poured into the internal volume of the fumigation object, where mainly due to diffusion it is deposited on all surfaces, and each settled particle continues to produce phosphine gas, as a result of which a phosphine gas concentration field is created inside the fumigation object near the entire internal surface of the fumigation object, where pests live.
  • the operator directs the bell of the dispersion unit to the inner surfaces of the fumigation object and sequentially processes the entire inner surface of the fumigation object, coating it with droplets of the composition mainly by the inertial deposition mechanism, which, when emitting phosphine gas, create a concentration field of phosphine gas a thin layer of air near the entire inner surface of the fumigation object.
  • the fumigation method is implemented when processing the flow of grain loaded into the holds of ships, wagons and other vehicles, as well as in warehouses, elevator wasp forces and other containers.
  • the internal volume of the fumigation object is filled with phosphine gas and at the same time dispersed composition, capable of adsorbing and / or absorbing phosphine gas from a bulk.
  • the dispersed composition absorbs phosphine from the bulk, settles on the surface and creates a concentration field of phosphine gas with a maximum concentration near the surface of the fumigation object
  • a suspension is obtained in which the powder content can be from 3 wt.% Of the total weight of the suspension to a maximum value at which the operability of the dispersion device of the resulting composition — suspension (up to 50-70%) is maintained.
  • Such a composition is stored in sealed packaging.
  • the hermetic package with the composition is connected to the dispersion device using an overlapping channel.
  • the operator turns on the dispersion unit and opens an overlapping channel connecting the sealed container with the dispersion device, the composition, due to the injection effect or due to pressurization, enters the dispersion unit, where it is dispersed, and the resulting aerosol particles are poured into the fumigation object.
  • the fumigation object is filled with aerosol, in which the dispersion phase is particles of aluminum phosphide, impregnated and surrounded by a layer of hydrophobic liquid - cyclooctane, which slows down the mass transfer of water molecules located in _ _ _ _
  • Aerosol particles settling evenly on the surface of the fumigation object, continue to slowly release phosphine gas, and therefore at the surfaces, namely insects, the maximum concentration of phosphine gas is created and maintained, which destroys insect pests.
  • Example 2 Aerosol particles, settling evenly on the surface of the fumigation object, continue to slowly release phosphine gas, and therefore at the surfaces, namely insects, the maximum concentration of phosphine gas is created and maintained, which destroys insect pests.
  • a hydrophobic liquid for example, cyclooctane
  • phosphine gas for example, by bubbling phosphine gas through it
  • the metal phosphide powder is mixed with a hydrophobic liquid containing phosphine in an absorbed state.
  • each aerosol particle obtained from such a composition will be able to release more phosphine gas than the aerosol particle in Example 1 by the amount of phosphine absorption capacity of cyclooctane, which impregnates and envelops the aerosol particle.
  • Example 3 Take a powder of a metal phosphide, for example zinc and apply a layer of solid polymer material to the surface of each particle, for example, wet it with a solution of alkyd resin in a volatile solvent, for example, a solvent and dry it. A polymer film covering each particle of metal phosphide plays the role of a diffusion barrier that slows down the release of phosphine. Dispersion is carried out as in example 1.
  • a powder is taken from a material capable of retaining phosphine gas in an adsorbed state, for example, porous coal, and saturated with phosphine gas, for example, by passing phosphine gas through a layer of porous coal.
  • the slowing down of the phosphine gas evolution process is due to the increased retention capacity of the sorbent pores.
  • a powder is taken from a material capable of retaining phosphine gas in an adsorbed state, for example, porous modified silica gel, saturated with phosphine gas by passing phosphine gas through a layer of porous modified silica gel, mixed with a hydrophobic liquid, for example, cyclooctane in the ratio as described in example 1.
  • a material capable of retaining phosphine gas in an adsorbed state for example, porous modified silica gel, saturated with phosphine gas by passing phosphine gas through a layer of porous modified silica gel, mixed with a hydrophobic liquid, for example, cyclooctane in the ratio as described in example 1.
  • a liquid capable of absorbing phosphine gas for example, cyclooctane, is taken and saturated with phosphine gas, for example, by bubbling phosphine gas through a liquid, a liquid containing phosphine gas in an absorbed state is obtained.
  • phosphine gas for example, cyclooctane
  • a powder is taken from a material capable of retaining phosphine gas in an adsorbed state, for example, porous coal, . _
  • Magnesium phosphide powder is taken and mixed with a hydrophobic liquid - cyclooctane in such proportions that the whole powder is impregnated and wetted, but remains in a loose state.
  • a powder is taken from a material capable of retaining phosphine gas in an adsorbed state, for example, porous coal, saturated with phosphine and mixed with a hydrophobic liquid, for example cyclooctane, in such proportions that the whole powder is impregnated and wetted, but remains in a loose state.
  • a material capable of retaining phosphine gas in an adsorbed state for example, porous coal, saturated with phosphine and mixed with a hydrophobic liquid, for example cyclooctane, in such proportions that the whole powder is impregnated and wetted, but remains in a loose state.
  • the invention provides the efficiency of fumigation of empty rooms with poor sealing, reducing the consumption of phosphine gas, eliminating the dependence on the humidity of the ambient air, simplifying the implementation of fumigation, including shipboard, increasing its environmental friendliness, reducing the cost of carrying it out, as well as expanding the field of application of fumigation with phosphine gas on fumigation of open spaces, including for the destruction of field pests.

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Pest Control & Pesticides (AREA)
  • General Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Agronomy & Crop Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nutrition Science (AREA)
  • Plant Pathology (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Catching Or Destruction (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention est destinée à éliminer les parasites dans des produits alimentaires, des emballages, des véhicules de transport et des locaux utilisés pour la transformation, le stockage et le transport prolongé de ces produits, ainsi qu'à éliminer des ennemis de végétaux sur le terrain. Le procédé prévoit l'utilisation d'une composition de phosphide de métal et d'une substance qui ralentit l'interaction du phosphide de métal avec l'humidité contenue dans l'air environnant, le contact de la composition avec l'air environnant, la dispersion de la composition lors de ce contact et l'interaction des particules de la composition avec l'humidité contenue dans l'air environnant accompagnée d'un dégagement de phosphine. Une autre variante prévoit la mise en contact d'une composition constituée de la substance contenant la phosphine à l'état adsorbé et d'une substance ralentissant le dégagement de la phosphine avec l'air environnant, la composition étant dispersée pendant cette mise en contact. La variante suivante prévoit la mise en contact d'une composition constituée de la substance contenant la phosphine à l'état adsorbé avec l'air environnant, accompagnée d'une dispersion. Dans cette composition, le phosphide de métal et la substance ralentissant l'interaction du phosphide avec l'humidité dans l'air ou la substance contenant la phosphine à l'état adsorbé ainsi que la substance ralentissant le dégagement de la phosphine se trouvent dans des états qui permettent de disperser la composition. Le procédé d'enfumage prévoit la dépressurisation de la cuve contenant la composition et l'alimentation de la composition dans une unité de dispersion du dispositif. Une autre variante du procédé prévoit la formation d'un champ de concentration de la phosphine gazeuse dans le volume intérieur de l'objet enfumé, avec remplissage simultané de ce volume par la composition dispersée capable d'adsorber et/ou d'absorber la phosphine gazeuse dans le volume. L'invention permet un enfumage rapide et efficace de locaux à mauvaise étanchéité et l'élimination d'insectes nuisibles sur le terrain.
PCT/RU2005/000018 2005-01-19 2005-01-19 Procede de fabrication d'un gaz fumigene (et variantes), composition de fabrication d'un gaz fumigene (et variantes) et procede fumigene (et variantes) WO2006078184A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EA200700821A EA011354B1 (ru) 2005-01-19 2005-01-19 Способ выработки газа-фумиганта (варианты), композиция для выработки газа-фумиганта (варианты) и способ фумигации (варианты)
PCT/RU2005/000018 WO2006078184A1 (fr) 2005-01-19 2005-01-19 Procede de fabrication d'un gaz fumigene (et variantes), composition de fabrication d'un gaz fumigene (et variantes) et procede fumigene (et variantes)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2005/000018 WO2006078184A1 (fr) 2005-01-19 2005-01-19 Procede de fabrication d'un gaz fumigene (et variantes), composition de fabrication d'un gaz fumigene (et variantes) et procede fumigene (et variantes)

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WO2006078184A1 true WO2006078184A1 (fr) 2006-07-27

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WO (1) WO2006078184A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047373A1 (de) * 1979-12-18 1982-07-15 Dr. Werner Freyberg Chemische Fabrik Delitia Nachf., 6941 Laudenbach Phosphorwasserstoff freisetzende zusammensetzung und verfahren zu ihrer herstellung
US5015475A (en) * 1988-05-14 1991-05-14 Degesch Gmbh Method and means for preventing or delaying undesired phosphine levels
RU2088097C1 (ru) * 1989-06-27 1997-08-27 Коммонвелт Сайентифик Энд Индастриал Рисерч Организейшн Способ фумигации продуктов фосфином и устройство для его осуществления
RU2131190C1 (ru) * 1992-06-05 1999-06-10 Коммонвелт Сайнтифик энд Индастриал Рисерч Организейшн Состав для производства фосфина, способ контролируемого производства фосфина, устройство для контролируемого производства фосфина, упакованный во влагонепроницаемую упаковку фосфидный состав и устройство для производства газа для фумигации

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047373A1 (de) * 1979-12-18 1982-07-15 Dr. Werner Freyberg Chemische Fabrik Delitia Nachf., 6941 Laudenbach Phosphorwasserstoff freisetzende zusammensetzung und verfahren zu ihrer herstellung
US5015475A (en) * 1988-05-14 1991-05-14 Degesch Gmbh Method and means for preventing or delaying undesired phosphine levels
RU2088097C1 (ru) * 1989-06-27 1997-08-27 Коммонвелт Сайентифик Энд Индастриал Рисерч Организейшн Способ фумигации продуктов фосфином и устройство для его осуществления
RU2131190C1 (ru) * 1992-06-05 1999-06-10 Коммонвелт Сайнтифик энд Индастриал Рисерч Организейшн Состав для производства фосфина, способ контролируемого производства фосфина, устройство для контролируемого производства фосфина, упакованный во влагонепроницаемую упаковку фосфидный состав и устройство для производства газа для фумигации

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Publication number Publication date
EA200700821A1 (ru) 2007-12-28
EA011354B1 (ru) 2009-02-27

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