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ASTM D5453 ASTM D439 UV Fluorescence Sulfur Determination Instrument Ultraviolet Fluorescence Sulfur Analyzer in Oil Petrochemical Industry
1. Overview
The ultraviolet fluorescence sulfur analyzer is a new generation of precision experimental instrument developed based on the principle of ultraviolet fluorescence and computer technology. It is an integrated sulfur analysis instrument, widely used to detect the sulfur content in liquid, solid or gas samples. The total sulfur content in the sample is quickly determined by ultraviolet fluorescence. The application of high-precision data acquisition cards and computer technology provides a reliable guarantee for data collection, control and processing. The instrument has outstanding advantages such as high sensitivity, low noise, wide linear range, strong anti-interference ability, high analysis accuracy, simple operation, stable and reliable results, etc. The instrument cooling fan automatically switches on and off, eliminating the trouble of waiting for shutdown after the sample is done.
ASTM D5453 ASTM D439 UV Fluorescence Sulfur Determination Instrument Ultraviolet Fluorescence Sulfur Analyzer in Oil Petrochemical Industry
2. Basic Principle
When the sample is introduced into the high-temperature cracking furnace, it is oxidized and cracked, and the sulfide therein is quantitatively converted into sulfur dioxide (SO2). The reaction gas is carried by the carrier gas and dehydrated by the membrane dryer before entering the reaction chamber. In the reaction chamber, sulfur dioxide is irradiated by ultraviolet light of a specific wavelength and converted into excited sulfur dioxide (S02*). When S02* transitions to the ground state, it emits photons. The photoelectron signal is received by the photomultiplier tube, amplified by the amplifier, and processed by the computer. It can be converted into an electrical signal proportional to the light intensity. The entire reaction process can be expressed as follows:
R-S+O2 SO2+SO3 + CO2+H2O
SO2+hγ SO2*+O2
SO2* SO2 +hγ*
Under the conditions, the fluorescence intensity generated in the reaction is proportional to the amount of sulfur dioxide generated, and the amount of sulfur dioxide is proportional to the total sulfur content in the sample. Therefore, the total sulfur content in the sample can be determined by measuring the fluorescence intensity. Before analyzing the sample, use a standard sample close to the sample to make a standard sample calibration curve, and then analyze the sample under the same conditions. The program automatically calculates the sulfur content of the sample based on the standard sample calibration curve.
ASTM D5453 ASTM D439 UV Fluorescence Sulfur Determination Instrument Ultraviolet Fluorescence Sulfur Analyzer in Oil Petrochemical Industry
3.Product Parameter
| Project | Instrument technical indicators |
| Applicable method | SH/T 0689, ASTM D5453, ASTM D439, etc. |
| Analytical sample | Used for the determination of total sulfur content in petrochemical products such as crude oil, distillate oil, petroleum gas, coal, plastics, naphtha raw materials and pre-hydrogenation raw materials |
| Measurable sample status | Solid, liquid, gas |
| Solid: 5mg (weighed according to sample content) | |
| Injection volume | Liquid: 1~50ul |
| Gas: 5ml | |
| (The sample must be fully combusted) | |
| Measuring range | Light oil: 0.1mg/~10000mg/L per 100% content |
| Heavy oil: 1~5000ppm (greater than 5000ppm, the sample needs to be diluted) | |
| Gas: 1 mg/m~5000 mg/m | |
| Minimum detection concentration | 0.1mg/L |
| Temperature control range and accuracy | 0ºC~1150ºC,2ºC |
| 0.1 mg/3 When the sample (or standard) concentration is <1.0 mg/, Lanshi 0.1 mg/L | |
| Repeatability error | When the sample (or standard) concentration is 1.0 mg/L≤≤10 mg/L, Lanshi 10% When the sample (or standard) concentration is >10 mg/L, |
| Baseline drift | No more than 5mv/min |
| Negative high pressure | DC400V~1200V can set the required value according to the measured concentration |
| Gas source requirements | Oxygen purity 99.999%, output pressure ≤0.2MPa |
| Argon purity 99.999%, output pressure ≤0.2MPa | |
| Analysis time | 2min-3min |
| Data communication interface | RS232 |
| Weight kg | 60 |
| Dimensions mm | Fluorescence sulfur analyzer temperature control: 520x490x460 |
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