Trace Sulfur Analyzer for Petrochemical and Semiconductor Gases​

As a modern analytical device based on gas chromatography flame photometric detection technology, the trace sulfur analyzer integrates high-precision separation, sensitive detection, and intelligent analysis functions, which can quickly and accurately complete trace analysis of sulfur elements. This article will delve into the technical principles, performance characteristics, and practical application value of this device in various industries.

Technical principle: combination of gas chromatography and flame photometry detection

The trace sulfur analyzer adopts the combined technology of gas chromatography separation and flame photometric detection (GC-FPD) to achieve precise analysis of sulfur elements through efficient separation and sensitive detection. This method is based on the differences in retention characteristics of different sulfides in the chromatographic column for separation, and high-sensitivity detection is performed using a flame photometric detector.

The specific workflow is as follows: First, collect the sample gas to be tested and enter the high inertia injection system. After the sample is accurately quantified by the quantitative ring, it is switched into the chromatographic column for separation through a valve. After efficient separation of sulfides such as hydrogen sulfide and carbonyl sulfide in the chromatographic column, they are sequentially introduced into the flame photometric detector (FPD). In a hydrogen rich flame, sulfides are reduced and excited, emitting a 394nm characteristic spectrum. The intensity of the light signal is detected by a photomultiplier tube, and the concentration of each component is finally calculated.

The detection limit of the instrument reaches 10 ppb (based on hydrogen sulfide), with a measurement range of 20 ppb-10 ppm and a dynamic linear range greater than 10 ^ 5, which can meet various concentration detection needs from environmental background values to industrial emissions. Adopting electronic pressure control (EPC) technology to achieve precise digital control of flow and pressure, ensuring the repeatability and accuracy of analysis results.

Technical advantage: innovative fusion of high precision and portability

The trace sulfur analyzer has multiple technical advantages, making it stand out in the field of trace sulfur analysis. Firstly, in terms of detection performance, the instrument adopts a high-sensitivity flame photometric detector with baseline noise ≤ 0.02pA and baseline drift (30min) ≤ 0.2pA to ensure the stability of trace detection. The detection limit reaches 10 ppb, fully meeting the strict requirements of environmental air and industrial process monitoring.

In terms of operational convenience, the instrument is equipped with a 10 inch high-definition touch screen computer and built-in professional data processing software to achieve real-time monitoring and data analysis of the instrument status. The automatic ignition function and self diagnostic system greatly reduce the difficulty of operation and maintenance requirements. The preheating time only takes 30 minutes, which significantly improves the detection efficiency compared to traditional instruments.

Portable design is another major highlight. The instrument size is 400 × 270 × 350mm and weighs less than 20kg, truly achieving on-site laboratory level performance. The built-in large capacity lithium battery supports long-term field work, and the standard micro printer can output inspection reports on site, greatly improving the convenience of on-site inspection.

The pneumatic system adopts fully inert treatment technology, and all pipeline components undergo special passivation treatment. Zero distance joints are used to reduce residue and effectively reduce the adsorption loss of sulfides, ensuring the accuracy of detection results. Built in solid-state hydrogen and nitrogen storage devices can operate continuously for 15 hours, ensuring safety and improving operational convenience.

Application areas: Comprehensive coverage across multiple industries

The application range of trace sulfur analyzer is extremely wide, covering multiple fields that require precise monitoring of sulfur elements. In the field of environmental monitoring, this instrument can be used for trace monitoring of sulfides such as hydrogen sulfide and carbonyl sulfide in the atmospheric environment, providing important data support for environmental quality assessment and pollution source analysis.

In the petrochemical industry, it can be used for the analysis of total sulfur and sulfur forms in natural gas, refinery gas, and process gas to ensure product quality and process safety. In the natural gas industry, it can be used for quality monitoring of pipeline natural gas to prevent corrosion of pipelines and equipment caused by sulfides.

In the semiconductor manufacturing industry, it can be used for the detection of trace sulfides in high-purity gases to ensure the cleanliness of the production process environment. In research institutes, it can be used for research in fields such as atmospheric chemistry and environmental science, providing reliable analytical methods for scientific research.

In addition, trace sulfur analyzer also plays an important role in emergency monitoring, third-party testing, quality supervision and other fields. Especially in emergency monitoring of sudden environmental incidents, the rapid response and on-site detection capabilities of instruments provide important technical support for emergency response.

The trace sulfur analyzer has become an important tool in the field of sulfur monitoring due to its high sensitivity, rapid analysis, and portable and flexible characteristics. By addressing the pain points of traditional analytical methods, this instrument provides users with efficient and reliable analytical solutions, playing a key role in fields such as petrochemicals, natural gas, and environmental monitoring.

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