Abrégé

The invention is directed to a method for detecting trace levels of an active gas component as contained in a gas sample by detection of said active gas component using a gas chromatograph in fluid communication with a detector sensitive for the gas component. The following steps are performed in a sequence: (i) feeding a carrier gas doped with a quantity of the active gas component to the gas chromatograph for a certain doping time; (ii) feeding a carrier gas which is not doped with the active gas component to the gas chromatograph for a certain flushing time and (iii) adding the gas sample to the carrier gas of step (ii) and feeding the resulting mixture to the gas chromatograph.

Classes IPC  ?

• G01N 30/34 - Contrôle des paramètres physiques du fluide vecteur de la composition du fluide, p. ex. du gradient

Abrégé

The invention is directed to a method for chemiluminescent sulphur detection wherein the method comprises the following steps. (a) oxidation of a gaseous starting mixture comprising one or more sulphur compounds to obtain an oxidized gas mixture. (b) reduction of the oxidized gas mixture as obtained in step (a) to obtain a gaseous mixture of reduced sulphur compounds in the presence of a ceramic surface. (c) reacting the mixture of reduced sulphur compounds obtained in step (b) with ozone to obtain a sulphur compound in excited state and measuring a chemiluminescent emission of the sulphur compound in excited state to obtain a measure for the amount of sulphur compounds in the gaseous starting mixture. The ceramic surface in step (b) is a magnesium aluminium silicate comprising surface.

Classes IPC  ?

• G01N 21/76 - ChimioluminescenceBioluminescence
• G01N 30/88 - Systèmes intégrés d'analyse, spécialement adaptés à cet effet, non couverts par un seul des groupes
• G01N 30/74 - Détecteurs optiques
• G01N 31/12 - Utilisation de la combustion
• G01N 31/00 - Recherche ou analyse des matériaux non biologiques par l'emploi des procédés chimiques spécifiés dans les sous-groupesAppareils spécialement adaptés à de tels procédés

Abrégé

The invention is directed to a furnace suited for oxidation of a gaseous starting mixture comprising one or more sulphur compounds to obtain an oxidized gas mixture and reduction of the oxidized gas mixture to obtain a gaseous mixture of reduced sulphur compounds comprising an interior furnace space, an inlet conduit for the gaseous starting mixture, an inlet for supply of an oxygen comprising gas, a ceramic comprising outlet conduit provided with an inlet opening for the mixture of reduced sulphur compounds, an inlet for hydrogen and heating means, wherein the inlet opening of the outlet conduit is comprised of more than one opening which openings fluidly connect the interior furnace space and the interior of the outlet conduit.

Classes IPC  ?

• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation
• B01J 12/00 - Procédés chimiques généraux faisant réagir des milieux gazeux avec des milieux gazeuxAppareillage spécialement adapté à cet effet
• B01J 19/02 - Appareils caractérisés par le fait qu'ils sont construits avec des matériaux choisis pour leurs propriétés de résistance aux agents chimiques
• B01J 19/24 - Réacteurs fixes sans élément interne mobile
• G01N 21/76 - ChimioluminescenceBioluminescence
• G01N 31/12 - Utilisation de la combustion
• G01N 30/84 - Préparation des fractions à séparer
• G01N 30/88 - Systèmes intégrés d'analyse, spécialement adaptés à cet effet, non couverts par un seul des groupes

Abrégé

The invention is directed to a furnace (30) suited for oxidation of a gaseous starting mixture comprising one or more sulphur compounds to obtain an oxidized gas mixture and reduction of the oxidized gas mixture to obtain a gaseous mixture of reduced sulphur compounds comprising an interior furnace space, an inlet conduit (1) for the gaseous starting mixture, an inlet (2) for supply of an oxygen comprising gas, a ceramic comprising outlet conduit (3) provided with an inlet opening (19) for the mixture of reduced sulphur compounds, an inlet (4) for hydrogen and heating means (5), wherein the inlet opening (19) of the outlet conduit (3) is comprised of more than one opening (19) which openings (19) fluidly connect the interior furnace space and the interior (20) of the outlet conduit (3).

Classes IPC  ?

• G01N 21/76 - ChimioluminescenceBioluminescence
• G01N 31/12 - Utilisation de la combustion
• G01N 1/28 - Préparation d'échantillons pour l'analyse
• G01N 30/74 - Détecteurs optiques
• G01N 30/02 - Chromatographie sur colonne
• G01N 33/28 - Huiles
• G01N 31/00 - Recherche ou analyse des matériaux non biologiques par l'emploi des procédés chimiques spécifiés dans les sous-groupesAppareils spécialement adaptés à de tels procédés
• G01N 33/00 - Recherche ou analyse des matériaux par des méthodes spécifiques non couvertes par les groupes
• B01J 19/24 - Réacteurs fixes sans élément interne mobile
• G01N 30/88 - Systèmes intégrés d'analyse, spécialement adaptés à cet effet, non couverts par un seul des groupes
• G01N 30/84 - Préparation des fractions à séparer

Abrégé

The invention is directed to a method for chemiluminescent sulphur detection wherein the method comprises the following steps, (a) oxidation of a gaseous starting mixture comprising one or more sulphur compounds to obtain an oxidized gas mixture, (b) reduction of the oxidized gas mixture as obtained in step (a) to obtain a gaseous mixture of reduced sulphur compounds in the presence of a ceramic surface, (c) reacting the mixture of reduced sulphur compounds obtained in step (b) with ozone to obtain a sulphur compound in excited state and measuring a chemiluminescent emission of the sulphur compound in excited state to obtain a measure for the amount of sulphur compounds in the gaseous starting mixture. The ceramic surface in step (b) is a magnesium aluminium silicate comprising surface.

Classes IPC  ?

• G01N 21/76 - ChimioluminescenceBioluminescence
• G01N 30/74 - Détecteurs optiques
• G01N 31/12 - Utilisation de la combustion
• G01N 33/00 - Recherche ou analyse des matériaux par des méthodes spécifiques non couvertes par les groupes
• B01J 21/08 - Silice
• B01J 23/00 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe

Produits et services

calibration fluids for electronic apparatus, namely, a mixture of known liquids, gases and solids for calibration of laboratory equipment electronic apparatus for analyzing the composition of crude oil, naphta and fuels, including jet fuel, gasoline and diesel as well as their components; computer software for use in gas chromatography analysis of hydrocarbon products education services, namely, conducting seminars, conferences and workshops in the field of gas chromatographs for analyzing the compostion of crude oil, Naphtha and fuels, namely, jet fuel, gasoline and diesel and their chemical components and the distribution of course materials in conjunction threwith; training services in the field of operation of gas chromatographs

Abrégé

The invention relates to a method for the quantitative analysis of hydrocarbon mixtures containing oxygenated compounds, in particular biofuels, using a flame-ionisation detector coupled to a gaseous-phase chromatography column, that comprises injecting a sample of a mixture to be analysed into the column and drawing at the detector output a chromatogram comprising a series of peaks each corresponding to one of the constituents of the mixture, characterised in that, for each of the constituents i of the mixture to be analysed, it comprises calculating a theoretical response factor RFi using the formula (I) in which ci is the number of carbon atoms in the constituent i, oi is the number of oxygen atoms in said constituent, Mc is the atomic mass of carbon, Mo is the atomic mass of oxygen, Mi is the molar mass of the constituent i, Cref is the number of carbon atoms in a reference compound, and Mref is the molar mass of said reference compound.

Classes IPC  ?

• G01N 30/86 - Analyse des signaux
• G01N 30/68 - Détecteurs électriques à ionisation de flamme
• G01N 33/28 - Huiles

Produits et services

Electronic apparatus; electronic apparatus for analysing the composition of crude oil, naphta, gas and fuels, including jet fuel, gasoline and diesel as well as their components; software; software to be used in the refining and gas industry. Education; providing of training. Research and development in the field of electronic analysis apparatus; software design and development; industrial analysis and research services.

Produits et services

Computer software used for analyzing the composition of gas and/or its components; computer software used for analyzing the composition of gasoline and/or its components

Produits et services

Electronic apparatus; electronic apparatus for analysing the composition of crude oil, naphta, gas and fuels, including jet fuel, gasoline and diesel as well as their components; software; software to be used in the refining and gas industry. Education; providing of training. Research and development in the field of electronic analysis apparatus; software design and development; industrial analysis and research services.

Produits et services

Electronic apparatus for analyzing the composition of gasoline or gasoline components; computer software used for analyzing the composition of gasoline and/or its components

Produits et services

Electronic apparatus for analysing the composition of crude oil, naphta and fuels, including jet fuel, gasoline and diesel as well as their components; software to be used in the refining industry. Education; providing of training. Research and development in the field of electronic analysis apparatus; design and development of software for the Hydrocarbon Processing Industry; industrial analysis and research services.

Produits et services

Electronic apparatus for analysing the composition of gasoline and/or its components; diagnostic software.