G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/76 (2006.01)
Patent
CA 2159657
A sulfur specific detection system, based on flameless sulfur chemiluminescence,which can determine the concentration of the sulfur component of complex matrices in a real time process application is disclosed herein. The system is comprised of a flameless reaction furnace, a chemiluminescence chamber and an electronic control system to control the flow of gases within the system and to provide analyses output in human readable form. The reaction furnace is an externally heated combustion zone that contains two pre-conditioned ceramic tubes. The tubes are of different sizes and are configured such that the smaller tube is a telescoping fit within the larger tube. Air and effluent from a chromatograph column are mixed at one end of the larger tube while hydrogen flows into the smaller tube counter current to the air and effluent. The system is under substantially 29 inches Hg at all times. The atmosphere in the ceramic tube assembly combined with the near vacuum conditions allows for the for- mation of sulfur monoxide when a sulfur containing compound passes through it. The sulfur monoxide along with the products of combustion, are drawn under vacuum tothe chemiluminescence chamber where ozone is continuously added. Ozone and sulfur monoxide react to form an electronically excited form of sulfur dioxide which releases ultraviolet radiation upon relaxation. The light released from the reaction is detected by a photomultiplier tube assembly and is linearly proportional to the amount of sulfur present. By eliminating upstream chromatography and injecting the sample directly into the reaction furnace, total sulfur concentration measurements made be obtained.
Fraser Murray
Haydt David
Kirk David
Fraser Murray
Haydt David
Kirk David
LandOfFree
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