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EP1250950B1 - Buse pour la dilution de la phosphine - Google Patents

Buse pour la dilution de la phosphine Download PDF

Info

Publication number
EP1250950B1
EP1250950B1 EP02006308A EP02006308A EP1250950B1 EP 1250950 B1 EP1250950 B1 EP 1250950B1 EP 02006308 A EP02006308 A EP 02006308A EP 02006308 A EP02006308 A EP 02006308A EP 1250950 B1 EP1250950 B1 EP 1250950B1
Authority
EP
European Patent Office
Prior art keywords
air
nozzle
pipe
air pipe
nozzle according
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP02006308A
Other languages
German (de)
English (en)
Other versions
EP1250950A1 (fr
Inventor
Franziskus Dr. Horn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1250950A1 publication Critical patent/EP1250950A1/fr
Application granted granted Critical
Publication of EP1250950B1 publication Critical patent/EP1250950B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/10—Mixing gases with gases

Definitions

  • the present invention relates to a nozzle for the dilution of hydrogen phosphide (chemical formula PH 3 ), which consists of a tubular air inlet and an annularly arranged gap (annular gap) and / or at least one laterally arranged tubes as a PH 3 inlet, the strength of the The gap opening and / or the tube opening is a maximum of 1/25 of the diameter of the tubular air inlet and / or the distance of the surface of an air steering element from the inside of the tubular air inlet in the region of the PH 3 inlet.
  • PH 3 has been used for decades for pest control and for prophylaxis in the protection of stored goods, in particular for food and feed.
  • PH 3 forms an easily flammable gas mixture with air, the ignition limit being 1.8% PH 3 concentration. If this value is exceeded, PH 3 tends to self-ignite.
  • German Offenlegungsschrift 198 39 385 which describes an effective process for the direct dilution of PH 3 with air, in which the mixture air / PH 3 is carried out under or in the presence of water.
  • the present invention discloses an easy to use Handheld device in the form of a nozzle that is easily portable and can be used quickly at any location.
  • the nozzle according to the invention was able to mix 90,000 liters of air with PH 3 without problems within one hour, with an air content of 10,000 ppm of PH 3 .
  • reaction zone can spread at supersonic speed.
  • the present invention is based on the surprising finding that the creation of a laminar flow at PH 3 along the inner wall of a tubular air inlet results in an optimal mixing of air and PH 3 without the risk of ignition below the ignition limit.
  • the occurrence of ignition is prevented by the fact that the critical conditions only occur in a very thin layer.
  • the PH 3 layer is immediately swept away by a strong air stream and mixed into the air.
  • the embodiment of Figure 1 consists of a tube open on both sides, which is identified by the reference number 1.
  • This tube has an annular gap 2, which has an annular attachment 3, into which flows in the direction of arrow 4 PH 3 , which then flows at the entry point 5 along the wall of the tube 1.
  • air flows at a very high speed into the opening 6 of the tube 1 in the direction of the arrow 6a, the already laminar flow of the PH 3 forming an even thinner layer.
  • the outlet opening of the air-PH 3 mixture is identified by reference number 7, the direction of flow of which is 7a.
  • the air passed through the pipe has, for example, an overpressure of 350 to 440 mm water column and a speed of 250 to 370 km / h.
  • the exit column 2 for the PH 3 should generally not exceed a diameter of 0.2 mm.
  • the thickness of the air layer 9 above the PH 3 layer preferably does not exceed the value of 5 mm.
  • the nozzle according to the invention can easily be selected from a number of quickly assemble elements to be assembled, which by O-rings are sealed.
  • the nozzle can be just as easy preferably made of stainless steel, disassemble, inspect and clean if necessary.
  • Figure 3 shows a section through the nozzle according to the invention this tube element.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Catching Or Destruction (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Claims (4)

  1. Tuyère utilisée pour la dilution de phosphine (formule chimique : PH3) par des gaz, particulièrement par de l'air,
    caractérisée en ce qu'elle est constituée d'une conduite d'air tubulaire (6) avec une ouverture annulaire (2) et/ou au moins un petit tube latéral (9) destinés à l'alimentation de la phosphine, l'épaisseur de l'ouverture annulaire ou du petit tube ne pouvant pas dépasser 1/25 du diamètre de la conduite d'air tubulaire et/ou de la distance entre la surface de l'élément de direction d'air et l'intérieur de la conduite d'air tubulaire dans le secteur où l'air est alimenté en PH3.
  2. Tuyère selon la revendication 1,
    caractérisée en ce que
    dans la conduite d'air tubulaire (6), il se trouve un corps ressemblant à une ogive (8), qui sert comme élément de guidage d'air et dont la pointe est dirigée vers l'ouverture par laquelle l'air est introduit. L'élément (8) a son diamètre maximum dans le secteur où l'air est alimenté en PH3.
  3. Tuyère selon la revendication 1- 2,
    caractérisée en ce que
    la tuyère est en acier inoxydable.
  4. Tuyère selon la revendication 1- 3,
    caractérisé en ce que
    la tuyère est constituée de pièces pouvant être interconnectées.
EP02006308A 2001-04-17 2002-03-21 Buse pour la dilution de la phosphine Expired - Lifetime EP1250950B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20106613U DE20106613U1 (de) 2001-04-17 2001-04-17 Düse zur Verwendung von Phosphorwasserstoff
DE20106613U 2001-04-17

Publications (2)

Publication Number Publication Date
EP1250950A1 EP1250950A1 (fr) 2002-10-23
EP1250950B1 true EP1250950B1 (fr) 2004-02-11

Family

ID=7955824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02006308A Expired - Lifetime EP1250950B1 (fr) 2001-04-17 2002-03-21 Buse pour la dilution de la phosphine

Country Status (13)

Country Link
US (1) US7163161B2 (fr)
EP (1) EP1250950B1 (fr)
JP (1) JP4030315B2 (fr)
CN (1) CN1234463C (fr)
AR (1) AR032272A1 (fr)
AT (1) ATE259256T1 (fr)
AU (1) AU784088B2 (fr)
BR (2) BRPI0200276B1 (fr)
CA (1) CA2377121C (fr)
DE (2) DE20106613U1 (fr)
ES (1) ES2215151T3 (fr)
MX (1) MXPA02001287A (fr)
ZA (1) ZA200200563B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319582B4 (de) * 2003-04-24 2007-03-22 Lechler Gmbh Zweistoffsprühdüse
US20050089408A1 (en) * 2003-05-09 2005-04-28 Solomon Jason D. Fluid ejector pumps
CL2004001316A1 (es) * 2004-05-28 2005-03-18 Fosfoquim S A Procedimiento para controlar plagas en fruta sin anar la calidad de la fruta que comprende la exposicion de la fruta a una alta concentracion de fosfina entre 700 a 3500 ppm a una temperatura entre (-1,5 a 15) grados celsius durante un periodo de tie
JP5240886B2 (ja) * 2005-06-27 2013-07-17 国立大学法人 熊本大学 微細液滴発生器および微細液滴発生装置、並びに微細液滴発生方法
US20110230679A1 (en) * 2010-03-16 2011-09-22 Dow Global Technologies, Inc. Reactive Static Mixer
US10782073B2 (en) 2015-02-27 2020-09-22 Technip France Waste heat boiler system, mixing chamber, and method for cooling a process gas
WO2017033747A1 (fr) * 2015-08-24 2017-03-02 株式会社村田製作所 Mélangeur de gaz et dispositif de mélange de gaz
GB2594078B (en) * 2020-04-16 2024-10-16 Edwards Ltd Flammable gas dilution
US20220168695A1 (en) * 2020-11-27 2022-06-02 Huei Tarng Liou Venturi Tube

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US272863A (en) * 1883-02-27 Hydrocarbon-burner
DE1256200B (de) * 1961-12-23 1967-12-14 Thyssen Rohrleitungsbau Ges Mi Duese zum Mischen von Gasen und/oder Fluessigkeiten
US3371618A (en) * 1966-02-18 1968-03-05 Chambers John Pump
US3721387A (en) * 1971-06-02 1973-03-20 United Aircraft Corp Ejector with variable mixing section and primary nozzle areas
US4095748A (en) * 1975-07-04 1978-06-20 Kanebo, Ltd. Apparatus for mixing a cement slurry with a glass fiber
US4334783A (en) * 1978-12-21 1982-06-15 Showa Denko Kabushiki Kaisha Mixing device
US4592509A (en) * 1981-11-18 1986-06-03 Hans Moss Blowing nozzle for silent outflow of gas
JPH0670314B2 (ja) * 1984-04-03 1994-09-07 シユトーラ フエルトミユ−レ アクチエンゲゼルシヤフト 繊維懸濁液の脱インキ処理用浮選装置
DE3724344A1 (de) * 1987-07-23 1989-02-02 Huels Chemische Werke Ag Mischduese zum vermischen zweier gasstroeme
US4915300A (en) * 1987-08-20 1990-04-10 John Ryan High pressure mixing and spray nozzle apparatus and method
US5014916A (en) * 1990-04-25 1991-05-14 The Perkin-Elmer Corporation Angular gas cap for thermal spray gun
US5242115A (en) * 1991-04-22 1993-09-07 Fomo Products, Inc. Apparatus and method for mixing and dispensing and mixing nozzle therefore
US5403475A (en) * 1993-01-22 1995-04-04 Allen; Judith L. Liquid decontamination method
ES2120189T3 (es) * 1994-03-25 1998-10-16 Siemens Ag Dispositivo combinado de alimentacion y mezcla.
DE19534107A1 (de) * 1995-09-14 1997-03-20 Wacker Siltronic Halbleitermat Mischdüse zum Vermischen von zwei oder mehreren Flüssigkeiten
US5899387A (en) * 1997-09-19 1999-05-04 Spraying Systems Co. Air assisted spray system
DE19839385A1 (de) * 1998-08-28 2000-03-23 Horn Pedro Miguel Verfahren und Vorrichtung zur Verdünnung von Phosphorwasserstoff mit Luft ohne Entzündungsgefahr

Also Published As

Publication number Publication date
CA2377121C (fr) 2012-10-02
AU1355002A (en) 2002-10-24
CN1381315A (zh) 2002-11-27
JP2002320882A (ja) 2002-11-05
CN1234463C (zh) 2006-01-04
MXPA02001287A (es) 2005-11-04
CA2377121A1 (fr) 2002-10-17
ZA200200563B (en) 2002-07-26
US7163161B2 (en) 2007-01-16
JP4030315B2 (ja) 2008-01-09
BRPI0200276B1 (pt) 2019-06-18
DE20106613U1 (de) 2001-07-12
BR0200276A (pt) 2003-01-07
DE50200239D1 (de) 2004-03-18
US20020148913A1 (en) 2002-10-17
ES2215151T3 (es) 2004-10-01
ATE259256T1 (de) 2004-02-15
AR032272A1 (es) 2003-10-29
EP1250950A1 (fr) 2002-10-23
AU784088B2 (en) 2006-02-02

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