FR2430392A1 - Destruction of nitrogen oxide(s) in effluent gas stream - by injecting active nitrogen to convert the oxide(s) into nitrogen and oxygen - Google Patents

Destruction of nitrogen oxide(s) in effluent gas stream - by injecting active nitrogen to convert the oxide(s) into nitrogen and oxygen

Info

Publication number
FR2430392A1
FR2430392A1 FR7819762A FR7819762A FR2430392A1 FR 2430392 A1 FR2430392 A1 FR 2430392A1 FR 7819762 A FR7819762 A FR 7819762A FR 7819762 A FR7819762 A FR 7819762A FR 2430392 A1 FR2430392 A1 FR 2430392A1
Authority
FR
France
Prior art keywords
nitrogen
oxides
oxide
stream
destruction
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.)
Withdrawn
Application number
FR7819762A
Other languages
French (fr)
Inventor
Odile Dessaux
Pierre Goudmand
Marc Mattot
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7819762A priority Critical patent/FR2430392A1/en
Publication of FR2430392A1 publication Critical patent/FR2430392A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0203—Preparation of oxygen from inorganic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • 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
    • B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/02—Preparation of nitrogen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

Oxides of nitrogen (NO + NO2) in tail gases are destroyed by injecting into the residual gas stream, which is at atmospheric press., a stream of activated nitrogen at atmospheric press. of slightly above. The activated nitrogen reacts with the nitrogen oxides to form N2 and O2. The activated nitrogen is produced eg by passing a stream of N2 through a continuous electric discharge at 1000-1500 V, eg using a hollow anode through which the N2 stream passes, and a cathode situated perpendicular to the anode to form an arc which gives rise to a plasma jet of activated nitrogen. Process gives excellent removal of nitrogen oxides from effluent gas streams, eg those from the prodn. of nitric acid. Effluents contg. eg =3000 ppm nitrogen oxides can be treated to give practically complete destruction of the oxides. Process overcomes prior drawbacks such as deactivation of catalysts in catalytic destruction processes, and gives a prod. which does not causes atmospheric pollution.
FR7819762A 1978-07-03 1978-07-03 Destruction of nitrogen oxide(s) in effluent gas stream - by injecting active nitrogen to convert the oxide(s) into nitrogen and oxygen Withdrawn FR2430392A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7819762A FR2430392A1 (en) 1978-07-03 1978-07-03 Destruction of nitrogen oxide(s) in effluent gas stream - by injecting active nitrogen to convert the oxide(s) into nitrogen and oxygen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7819762A FR2430392A1 (en) 1978-07-03 1978-07-03 Destruction of nitrogen oxide(s) in effluent gas stream - by injecting active nitrogen to convert the oxide(s) into nitrogen and oxygen

Publications (1)

Publication Number Publication Date
FR2430392A1 true FR2430392A1 (en) 1980-02-01

Family

ID=9210242

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819762A Withdrawn FR2430392A1 (en) 1978-07-03 1978-07-03 Destruction of nitrogen oxide(s) in effluent gas stream - by injecting active nitrogen to convert the oxide(s) into nitrogen and oxygen

Country Status (1)

Country Link
FR (1) FR2430392A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1234933A (en) * 1958-08-27 1960-07-01 Ici Ltd Process for carrying out gas reactions
US4076606A (en) * 1975-01-29 1978-02-28 Kabushiki Kaisha Pollution Preventing Research Laboratory Method of decomposing nitrogen oxide (NOx)
FR2376818A1 (en) * 1977-01-07 1978-08-04 Hoechst Ag NITROGEN OXIDE REDUCTION PROCESS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1234933A (en) * 1958-08-27 1960-07-01 Ici Ltd Process for carrying out gas reactions
US4076606A (en) * 1975-01-29 1978-02-28 Kabushiki Kaisha Pollution Preventing Research Laboratory Method of decomposing nitrogen oxide (NOx)
FR2376818A1 (en) * 1977-01-07 1978-08-04 Hoechst Ag NITROGEN OXIDE REDUCTION PROCESS

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Legal Events

Date Code Title Description
ST Notification of lapse