WO2002062465A1 - Reacteur photochimique - Google Patents

Reacteur photochimique Download PDF

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Publication number
WO2002062465A1
WO2002062465A1 PCT/DE2002/000437 DE0200437W WO02062465A1 WO 2002062465 A1 WO2002062465 A1 WO 2002062465A1 DE 0200437 W DE0200437 W DE 0200437W WO 02062465 A1 WO02062465 A1 WO 02062465A1
Authority
WO
WIPO (PCT)
Prior art keywords
reactor
gas
photochemical
alternating field
photochemical reactor
Prior art date
Application number
PCT/DE2002/000437
Other languages
German (de)
English (en)
Inventor
Dieter Meissner
Original Assignee
Dieter Meissner
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 Dieter Meissner filed Critical Dieter Meissner
Priority to DE10290351T priority Critical patent/DE10290351D2/de
Publication of WO2002062465A1 publication Critical patent/WO2002062465A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32082—Radio frequency generated discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/123—Ultraviolet light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/129—Radiofrequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/00033—Continuous processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0873—Materials to be treated
    • B01J2219/0877—Liquid

Definitions

  • the invention relates to a photochemical reactor and its use for photochemical reactions.
  • a primary photochemical reaction is understood to mean the formation of one or more radicals or other reactive particles from an atom or molecule if this reaction is caused by absorption of a photon.
  • the speed of such a reaction depends, among other things, on on the light intensity and the wavelength of the light.
  • the object of the invention is to create a further powerful and highly efficient photochemical reactor. Furthermore, it is the object of the invention to provide a method for operating such a photoreactor. The object is achieved by a photochemical reactor with the entirety of the features of claim 1 and a method according to the auxiliary claim. Advantageous refinements result from the claims which refer back to them in each case. ⁇ •
  • the photochemical reactor according to claim 1 has at least one gas-filled, photon-permeable hollow body.
  • this hollow body can be spherical.
  • a suitable hollow body can also have the shape of an ellipsoid or a cuboid or cubic hollow body.
  • Means are also available for applying an external electromagnetic field to the reactor. Suitable means for this are, for example, an induction coil or capacitor plates.
  • the hollow body according to the invention advantageously has a gas which is capable of emitting photons upon electromagnetic excitation.
  • a gas can be a pure gas or a gas mixture.
  • gases that emit (emit) photons when excited are, for example, gaseous sodium, gaseous xenon, mercury vapor or argon mixed with mercury vapor.
  • the choice of the gas or the gas mixture and its pressure inside a container depends on the photochemical reaction that is to take place in the reactor and can be determined by a person skilled in the art become.
  • the pressure of the gas inside a container is typically in the range of a few torr, e.g. B. in the range of 1-2 torr.
  • the hollow body is advantageously permeable to photons, which means that it is made of a material that allows photons to pass through.
  • the hollow body should advantageously behave stably in an alternating electromagnetic field, i. H. for example, show no heating, have dimensional stability and do not become porous.
  • A, in the sense of the invention, suitable hollow body is z. B. a glass or quartz hollow sphere.
  • the gas in the hollow bodies is excited by applying or generating an external electromagnetic field to the reactor. This leads to photon emission.
  • an external field can be accomplished, for example, by an induction coil which is guided around the reactor and is fed with alternating current.
  • an induction coil which is guided around the reactor and is fed with alternating current.
  • Another suitable high-frequency excitation is also possible through a capacitor plate arrangement in the interior of the reactor. This is also connected to alternating current.
  • the induction coil or the capacitor plate arrangement for example, generate a high-frequency alternating field, by means of which the gas inside the container is excited.
  • the excited gas emits photons, which are used for the photochemical conversion in the reactor become.
  • the conversion rate of the reaction depends, among other things, on the gas used, the gas pressure and the wavelength of the photons which the excited gas emits.
  • additional means are available to ensure a certain temperature or a temperature course in the reactor, for example by means of a cooling coil.
  • High frequency is to be understood in particular as a frequency in the range from a few kHz to a few GHz, in particular in the range from 100 kHz to 30 MHz.
  • a tight packing of small containers in the reactor advantageously ensures that the photons emitted by the excited gas effectively trigger a photochemical reaction over a large surface and in a short way.
  • the effectiveness of the reaction is regularly increased as the number of hollow bodies per unit volume of the reactor increases. Furthermore, the ratio of surface area to volume increases as the volume of the individual hollow bodies becomes smaller. This also regularly contributes to an improved effectiveness of the photochemical reaction.
  • FIG. 1 shows: Photoelectrochemical absorption column reactor (PAC reactor) with an inductive feed
  • Figure 2 Photoelectrochemical absorption column reactor (PAC reactor) with a capacitive feed '
  • the photochemical reactor in FIG. 1 generates an electromagnetic high-frequency alternating field through an induction coil 3.
  • Frequencies in the range from 100 kHz to 30 MHz can be achieved in a simple manner.
  • This configuration also allows a flexible design of the reactor structure. For example, an induction coil 3 can be exchanged for another with a different number of turns or a different cross-section without the internal structure (hollow body packing) of the reactor having to be changed.
  • the photochemical reactor generates the alternating electromagnetic field through capacitor plates 4. These are advantageously located between the hollow bodies in the interior of the reactor. Typical capacitive excitations are in the range from 2 to 100 MHz.
  • the reactor is densely packed with ellipsoidal quartz containers with a first diameter D1 of 1 cm and a second diameter D2 of approx. 1.25 cm.
  • An induction coil with an inner diameter of 6.8 cm and 36 turns wound around the column is connected to alternating current and generated a high-frequency alternating field of 2 MHz with 300 watt power consumption.
  • a spiral circulation cooler keeps the temperature of the reactor in a range of 15 to 40 ° C.
  • reaction is carried out in a conventional photochemical reactor (Hg lamp, 300 W).
  • the photoelectrochemical absorption column reactor The photoelectrochemical absorption column reactor
  • PAC reactor consists of a cylindrical column with an inner diameter of 2 cm and a length of 30 cm.
  • the reactor is tightly packed with spherical quartz containers with a maximum diameter of 1 mm.
  • Inside the reactor are two capacitor plates (0.8 cm x 28 cm), which are connected to alternating current and generate a high-frequency alternating field of 10 MHz with a power consumption of 300 watts.
  • a spiral circulation cooler keeps the temperature of the reactor in a range of 15 to 40 ° C.
  • o-CP photochemical degradation of o-chlorophenol

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Analytical Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Réacteur photochimique qui fonctionne avec économie, mais cependant de manière particulièrement efficace. Le réacteur photochimique selon la présente invention est constitué de corps creux en verre ou en quartz remplis de gaz qui se trouvent dans le milieu à mettre en réaction. Le gaz situé dans les corps creux est excité par un champ électromagnétique externe, si bien que la lumière se forme avantageusement directement dans le milieu. L'efficacité et le taux de conversion chimique s'en trouvent ainsi régulièrement augmentés.
PCT/DE2002/000437 2001-02-07 2002-02-06 Reacteur photochimique WO2002062465A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10290351T DE10290351D2 (de) 2001-02-07 2002-02-06 Photochemischer Reaktor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10105427.0 2001-02-07
DE2001105427 DE10105427A1 (de) 2001-02-07 2001-02-07 Photochemischer Reaktor

Publications (1)

Publication Number Publication Date
WO2002062465A1 true WO2002062465A1 (fr) 2002-08-15

Family

ID=7673087

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/000437 WO2002062465A1 (fr) 2001-02-07 2002-02-06 Reacteur photochimique

Country Status (2)

Country Link
DE (2) DE10105427A1 (fr)
WO (1) WO2002062465A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025366A1 (de) 2010-06-28 2011-12-29 Umex Gmbh Dresden Fotoreaktor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20210328U1 (de) * 2002-07-04 2002-09-12 ELTRO GmbH, 52499 Baesweiler Plasmareaktor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB565371A (en) * 1942-02-03 1944-11-08 Colgate Palmolive Peet Co Improvements in or relating to photocatalytic processes and apparatus therefor
US4247379A (en) * 1979-08-09 1981-01-27 Leach Sam L Method for chemical reactions using high intensity radiant energy and system therefor
EP0429814A2 (fr) * 1989-10-11 1991-06-05 Mls Gmbh Procédé et dispositif de déclenchement et de promotion des réactions chimiques
DD291199A5 (de) * 1989-12-29 1991-06-20 Mikroelektronik "Karl Marx",De Vorrichtung zur uv-bestrahlung stroemender fluessigkeiten und gase
FR2674526A1 (fr) * 1991-03-29 1992-10-02 France Telecom Dispositif a source de rayonnement ultraviolet induit par des micro-ondes, pour la polymerisation d'objets photopolymerisables.
WO1998037962A1 (fr) * 1997-02-28 1998-09-03 Umex Gesellschaft Für Umweltberatung Und Entsorgung Mbh Dispositif pour conduire des reactions photochimiques, de preference des dissolutions, dans un laboratoire
EP0916398A1 (fr) * 1997-11-03 1999-05-19 Mikrowellen-Systeme MWS GmbH Dispositif de déclenchement et/ou promotion de processus chimiques par irradiation d'un réactant avec radiation électromagnétique
EP0927574A1 (fr) * 1997-12-30 1999-07-07 Knapp, Günter, Dipl.-Ing.Dr. Procédé et dispositif pour déclencher et/ou effectuer des réactions chimiques

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB565371A (en) * 1942-02-03 1944-11-08 Colgate Palmolive Peet Co Improvements in or relating to photocatalytic processes and apparatus therefor
US4247379A (en) * 1979-08-09 1981-01-27 Leach Sam L Method for chemical reactions using high intensity radiant energy and system therefor
EP0429814A2 (fr) * 1989-10-11 1991-06-05 Mls Gmbh Procédé et dispositif de déclenchement et de promotion des réactions chimiques
DD291199A5 (de) * 1989-12-29 1991-06-20 Mikroelektronik "Karl Marx",De Vorrichtung zur uv-bestrahlung stroemender fluessigkeiten und gase
FR2674526A1 (fr) * 1991-03-29 1992-10-02 France Telecom Dispositif a source de rayonnement ultraviolet induit par des micro-ondes, pour la polymerisation d'objets photopolymerisables.
WO1998037962A1 (fr) * 1997-02-28 1998-09-03 Umex Gesellschaft Für Umweltberatung Und Entsorgung Mbh Dispositif pour conduire des reactions photochimiques, de preference des dissolutions, dans un laboratoire
EP0916398A1 (fr) * 1997-11-03 1999-05-19 Mikrowellen-Systeme MWS GmbH Dispositif de déclenchement et/ou promotion de processus chimiques par irradiation d'un réactant avec radiation électromagnétique
EP0927574A1 (fr) * 1997-12-30 1999-07-07 Knapp, Günter, Dipl.-Ing.Dr. Procédé et dispositif pour déclencher et/ou effectuer des réactions chimiques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025366A1 (de) 2010-06-28 2011-12-29 Umex Gmbh Dresden Fotoreaktor

Also Published As

Publication number Publication date
DE10105427A1 (de) 2002-08-08
DE10290351D2 (de) 2004-04-15

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