DE1769811A1 - Process for removing nitric oxide from industrial gases - Google Patents

Process for removing nitric oxide from industrial gases

Info

Publication number
DE1769811A1
DE1769811A1 DE19681769811 DE1769811A DE1769811A1 DE 1769811 A1 DE1769811 A1 DE 1769811A1 DE 19681769811 DE19681769811 DE 19681769811 DE 1769811 A DE1769811 A DE 1769811A DE 1769811 A1 DE1769811 A1 DE 1769811A1
Authority
DE
Germany
Prior art keywords
nitric oxide
industrial gases
absorption
absorption liquid
removing nitric
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.)
Pending
Application number
DE19681769811
Other languages
German (de)
Inventor
Ludwig Dipl-Chem Dr Hill
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
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
Priority claimed from DE19681667774 external-priority patent/DE1667774A1/en
Application filed by Uhde GmbH filed Critical Uhde GmbH
Priority to DE19681769811 priority Critical patent/DE1769811A1/en
Priority to ES364511A priority patent/ES364511A1/en
Priority to FR6906722A priority patent/FR2003654A1/fr
Priority to BE729700D priority patent/BE729700A/xx
Priority to JP44018089A priority patent/JPS4922922B1/ja
Publication of DE1769811A1 publication Critical patent/DE1769811A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Industrial Gases (AREA)

Description

FRIEDRICH UHDE GMBH, DORTMUND 1769811FRIEDRICH UHDE GMBH, DORTMUND 1769811

Verfahren zur Entfernung von Stickstoffmonoxyd aus Industriegasen Process for removing nitric oxide from industrial gases

Gegenstand des Hauptpatentes (Patentanmeldung P 16 67 774·θ) ist einThe subject of the main patent (patent application P 16 67 774 · θ) is a

Verfahren zur Entfernung von Stickstoffmonoxyd aus Industriegasen durchProcess for removing nitric oxide from industrial gases by

Oxydation des Stickstoffmonoxyd und Absorption der Stickoxyde in einerOxidation of nitric oxide and absorption of nitrogen oxides in one

Absorptionsflüssigkeit, das dadurch gekennzeichnet ist, daß der pH-Wert der Absorptionsflüssigkeit grosser als 7,4 ist.Absorption liquid, which is characterized in that the pH the absorption liquid is greater than 7.4.

Die Oxydation des Stickstoffmonoxyd sowie die Absorption der Stickstoffoxyde findet dabei in zwei getrennten Reaktionsgefaasen statt, so daß die Reaktion im Oxydator ohne Anwesenheit einer Flüssigkeit erfolgt.The oxidation of nitric oxide and the absorption of nitrogen oxides takes place in two separate reaction vessels, so that the reaction in the oxidizer takes place without the presence of a liquid.

Es wurde nun überraschend festgestellt, daß ein wesentlich höherer Gasreinigungsgrad erzielt wird, wenn das von Stickstoffoxyden zu reinigende Gas bereits im Oxydator nit Absorptionsflüssigkeit in Kontakt gebracht wird.It has now been found, surprisingly, that a significantly higher degree of gas purification is achieved when the nitrogen oxides to be purified Gas already brought into contact with absorption liquid in the oxidizer will.

Entsprechende Versuche wurden unter den gleichen Bedingungen Busgeführt wie im Beispiel zum Hauptpatent (Patentanmeldung P 16 67 774.0), jedoch wurde der Oxydationsraum mit Absorberflüesigkeit berieselt. Dabei wurde durch die erfindungsgemässe Befeuchtung des Oxydationsraumea eine Reinigung des Gases bis auf einen Restgehalt von etwa 0,01 cm /Nm Stickstoffoxyd erzielt.Corresponding tests were carried out under the same bus conditions as in the example for the main patent (patent application P 16 67 774.0), however the oxidation room was sprinkled with absorber liquid. It was cleaning by means of the humidification of the oxidation room according to the invention of the gas to a residual content of about 0.01 cm / Nm nitrogen oxide achieved.

In weiteren Versuchen mit der im Beispiel der Hauptanmeldung verwendeten Betriebsanlage zeigte sich überraschend, daß sich eine verbesserte Gasreinigung weiterhin erreichen lässt, wenn der Absorptionsflüssigkeit in geringer Minge Imidazolderivate zugegeben werden. Das in den Versuchen verwandte Imidazolderivat ist unter der Firmenbezeichnung NALQUAT G-8-11 bekannt und stellt ein quarternisiertes Imidazol dar.In further experiments, the one used in Example of the parent application operating system is that an improved gas cleaning can still be achieved if the absorption liquid in less Minge imidazole derivatives are added showed surprising. The related in the experiments imidazole derivative known under the company name NALQUAT G-8-11 and represents a quaternized imidazole.

Sie nach der erfindungsgemäesen Zugabe von Imidazolderivat erzielten Rest- gehalte en Stickstoffoxyden im Kokaofengas betrugen ohne Abweichungen weniger ale 0,01 cnr/Nm · ' They held up by the addition of imidazole derivative erfindungsgemäesen residual scored en nitrogen oxides in Kokaofengas were no deviations less ale 0.01 cnr / Nm · '

109829/U53109829 / U53

Claims (2)

FRIEDRICH UHOE GMBH, DORTMUND 1769811 PatentansprücheFRIEDRICH UHOE GMBH, DORTMUND 1769811 patent claims 1. Verfahren zur Entfernung von Stickstoffmonoxyd aus Industriegasen durch Oxydation des Stickstoffmonoxyd und Absorption der Stickstoffoxyde in einer Absorptionsflüssigkeit nach Patent (Patentanmeldung P 16 67 774·θ), dadurch gekennzeichnet, daß Absorptionsflüssigkeit dem Oxydator zugegeben wird.1. Process for removing nitrogen monoxide from industrial gases by oxidation of nitric oxide and absorption of the Oxides of nitrogen in an absorption liquid according to patent (Patent application P 16 67 774 · θ), characterized in that absorption liquid is added to the oxidizer. 2. Verfahren zur Entfernung von Stickstoffmonoxyd aus Industriegasen durch Oxydation des Stickstoffmonoxyd uno Absorption der Stickstoffoxyde in einer Absorptionsflüssigkeit nach Patent (Patentanmeldung P 16 67 774.ü), sowie nach Anspruch 1, dadurch gekennzeichnet, daß die Absorptionsflüssigkeit ein Iiaidazolderivat oder Imidazolderivate enthält.2. Process for removing nitric oxide from industrial gases by oxidation of nitrogen monoxide and absorption of nitrogen oxides in an absorption liquid according to the patent (Patent application P 16 67 774.ü), as well as according to claim 1, characterized characterized in that the absorption liquid is a iiaidazole derivative or imidazole derivatives. 109829/U53109829 / U53
DE19681769811 1968-03-11 1968-07-18 Process for removing nitric oxide from industrial gases Pending DE1769811A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19681769811 DE1769811A1 (en) 1968-03-11 1968-07-18 Process for removing nitric oxide from industrial gases
ES364511A ES364511A1 (en) 1968-03-11 1969-03-08 Procedure for purifying nitrogen monoxide industrial gases. (Machine-translation by Google Translate, not legally binding)
FR6906722A FR2003654A1 (en) 1968-03-11 1969-03-10
BE729700D BE729700A (en) 1968-03-11 1969-03-11
JP44018089A JPS4922922B1 (en) 1968-03-11 1969-03-11

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681667774 DE1667774A1 (en) 1968-03-11 1968-03-11 Process for removing nitric oxide from industrial gases
DE19681769811 DE1769811A1 (en) 1968-03-11 1968-07-18 Process for removing nitric oxide from industrial gases

Publications (1)

Publication Number Publication Date
DE1769811A1 true DE1769811A1 (en) 1971-07-15

Family

ID=25754317

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681769811 Pending DE1769811A1 (en) 1968-03-11 1968-07-18 Process for removing nitric oxide from industrial gases

Country Status (5)

Country Link
JP (1) JPS4922922B1 (en)
BE (1) BE729700A (en)
DE (1) DE1769811A1 (en)
ES (1) ES364511A1 (en)
FR (1) FR2003654A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383506B (en) * 1985-08-22 1987-07-10 Schmid Peter J METHOD FOR REMOVING AND RECYCLING NITROGEN OXIDS IN SMOKE GASES

Also Published As

Publication number Publication date
BE729700A (en) 1969-08-18
JPS4922922B1 (en) 1974-06-12
ES364511A1 (en) 1970-12-16
FR2003654A1 (en) 1969-11-14

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