Monitoring gas impurities with total sulfur detection
AssigneeMls Acq, Inc.
InventorsMartin L. Spartz, Kelly Renee McPartland, Anthony S. Bonanno, Adam R. Klempner
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Abstract
A system and method for determining impurities in a beverage grade gas such as CO2 or N2 relies on FTIR gas analysis for measuring non-sulfur impurities as well as SO2. CO2% also can be determined. A multiplexer selects a sample gas from multiple gas samples. Conversion of reduced sulphur present in some impurities to SO2 is conducted in an oxidizing furnace. Climate control and measurements of oxygen gas impurities also can be provided.
Claims22
A system for analyzing a beverage grade gas, the system comprising:
- a multiplexer for selecting a gas sample from multiple gas samples;
- a spectrometer including a gas cell for detecting an absorbance spectrum of gas in the gas cell;
- an oxidizing furnace for converting reduced sulfur present in the gas sample to SO2;
- an arrangement including a device for directing the gas sample to the spectrometer or to the oxidizing furnace;
- and
- a computer module for operating the multiplexer, the oxidizing furnace and/or the device for directing the gas to the spectrometer or to the oxidizing furnace;
- wherein the computer module is configured to operate the device for directing the gas to the spectrometer to switch conditions in the gas cell between an atmospheric pressure and a pressure above atmospheric.
A method for analyzing a beverage grade gas, the method comprising:
- (a) selecting a gas sample from multiple gas samples;
- (b) directing a first portion of the gas sample to a gas cell;
- (c) measuring impurities present in the gas cell with a spectrometer, wherein the impurities include SO2;
- (d) directing a second portion of the gas sample to an oxidizing furnace;
- (e) converting reduced sulfur present in the second portion to SO2;
- (f) directing gas exiting the oxidizing furnace to the gas cell;
- (g) measuring a total SO2 in the gas cell;
- (h) repeating steps (a) through (g);
- and
- (i) switching conditions in the gas cell between an atmospheric pressure and a pressure above atmospheric.
A system, comprising:
- a spectrometer including a gas cell for detecting an absorbance spectrum of gas in the gas cell;
- an oxidizing furnace for converting reduced sulfur present in the gas to SO2;
- an arrangement including a device for directing the gas to the gas spectrometer;
- and
- a computer module configured to operate the device for directing the gas to the spectrometer to switch conditions in the gas cell between an atmospheric pressure and a pressure above atmospheric.
Dependencies are inferred from the claim text.