Quartz cracking tube for fluorescent sulfur determinator
A technology of sulfur determination instrument and cracking tube, which is applied in the direction of fluorescence/phosphorescence, preparation of test samples, material excitation analysis, etc. It can solve the problems of affecting the sensitivity of fluorescence sulfur determination instrument, damaging the membrane dryer, and clogging the membrane dryer. Achieve the effect of prolonging the time, normal sample injection speed and sufficient combustion
Inactive Publication Date: 2015-04-29
李章平
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Problems solved by technology
Due to the presence of carbon, the membrane dryer will be polluted, blocked, or even damaged, and the sensitivity of the fluorescence sulfur analyzer will be affected
The common solution is to slow down the flow rate of the sample, and the carbon deposition is reduced, but it cannot be completely avoided, and it will still affect the sensitivity of the fluorescent sulfur analyzer
Method used
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Embodiment 1
[0018] Embodiment one: see figure 2 and image 3 As shown, a quartz pyrolysis tube for a fluorescent sulfur determination instrument is provided with a nozzle 1 inside, and the nozzle 1 has a bell mouth 10, and the ratio of the length of the bell mouth 10 to the total length of the nozzle 1 is 1 / 7 . Preferably, the length of the bell mouth 10 is 1.5 mm, and the total length of the nozzle 1 is 10.5 mm.
[0019] A 1 mm long bluff body 2 is provided inside the bell mouth 10, and a gap is set between the bluff body 2 and the inner wall of the bell mouth, and the oxygen and the carrier gas carrying the sample flow out of the nozzle through the gap. Through the above structure, the carrier gas flow carrying the sample has a buffer and collision when passing through the nozzle, which prolongs the time of the sample in the quartz pyrolysis tube, and the injection speed is normal, the combustion is sufficient, and there is no carbon deposition, the sensitivity of the fluorescence su...
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Abstract
The invention discloses a quartz cracking tube for a fluorescent sulfur determinator. A nozzle is arranged in the quartz cracking tube and provided with a bell mouth, and the ratio of the length of the bell mouth to the total length of the nozzle is 1 / 5-1 / 7. A drag reducing fluid is arranged in the bell mouth, and a clearance is arranged between the drag reducing fluid and the inner ball of the bell mouth. When in flowing out of the nozzle from the clearance, oxygen and carrier gas carried with samples have cushion and collision, the time of the samples in the quartz cracking tube can be prolonged, the feeding speed is normal, the combustion is thorough, no accumulated carbon exists, and the fluorescent sulfur determinator has high sensitivity.
Description
technical field [0001] The invention relates to a sulfur analysis instrument, in particular to a quartz cracking tube for a fluorescence sulfur determination instrument. Background technique [0002] Fluorescence sulfur determination instrument is based on sulfur dioxide (SO 2 ) is a new generation of precision experimental instrument developed by combining the principle of emitting fluorescence under specific light excitation and computer technology. It has outstanding advantages such as wide linear range, strong anti-interference ability, easy operation, stable and reliable results, etc. It can be widely used in petroleum, chemical industry , electric power, coal, food, environmental protection and other fields, it is a relatively advanced sulfur analysis instrument at home and abroad. [0003] The fluorescent sulfur determination instrument adopts the principle of ultraviolet fluorescence method. When the sample is blown into the high-temperature cracking furnace by the ...
Claims
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IPC IPC(8): G01N21/64G01N1/44
Inventor 李章平
Owner 李章平