Abstract

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.

IPC Classes  ?

• G01N 30/34 - Control of physical parameters of the fluid carrier of fluid composition, e.g. gradient

Abstract

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.

IPC Classes  ?

• G01N 21/76 - ChemiluminescenceBioluminescence
• G01N 30/88 - Integrated analysis systems specially adapted therefor, not covered by a single one of groups
• G01N 30/74 - Optical detectors
• G01N 31/12 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using combustion
• G01N 31/00 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods

Abstract

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.

IPC Classes  ?

• B01J 4/00 - Feed devicesFeed or outlet control devices
• B01J 12/00 - Chemical processes in general for reacting gaseous media with gaseous mediaApparatus specially adapted therefor
• B01J 19/02 - Apparatus characterised by being constructed of material selected for its chemically-resistant properties
• B01J 19/24 - Stationary reactors without moving elements inside
• G01N 21/76 - ChemiluminescenceBioluminescence
• G01N 31/12 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using combustion
• G01N 30/84 - Preparation of the fraction to be distributed
• G01N 30/88 - Integrated analysis systems specially adapted therefor, not covered by a single one of groups

Abstract

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).

IPC Classes  ?

• G01N 21/76 - ChemiluminescenceBioluminescence
• G01N 31/12 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using combustion
• G01N 1/28 - Preparing specimens for investigation
• G01N 30/74 - Optical detectors
• G01N 30/02 - Column chromatography
• G01N 33/28 - Oils
• G01N 31/00 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
• B01J 19/24 - Stationary reactors without moving elements inside
• G01N 30/88 - Integrated analysis systems specially adapted therefor, not covered by a single one of groups
• G01N 30/84 - Preparation of the fraction to be distributed

Abstract

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.

IPC Classes  ?

• G01N 21/76 - ChemiluminescenceBioluminescence
• G01N 30/74 - Optical detectors
• G01N 31/12 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using combustion
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
• B01J 21/08 - Silica
• B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group

Goods & 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

Abstract

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.

IPC Classes  ?

• G01N 30/86 - Signal analysis
• G01N 30/68 - Flame ionisation detectors
• G01N 33/28 - Oils

Goods & 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.

Goods & 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

Goods & 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.

Goods & 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

Goods & 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.

Goods & Services

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