Analysis of Hydrogen Sulfide in Gas by Gas Chromatography Online Chromatography

Analysis of Hydrogen Sulfide in Gas by Gas Chromatography Online ChromatographyChina is a major coal producing country, but the high content of sulfides in coal mines can cause inconvenience for subsequent coal energy conversion. Therefore, when coal mines convert coke gas, they need to undergo desulfurization treatment. And how to evaluate the content of sulfides has always been a hot research topic. At present, the methods for analyzing the content of hydrogen sulfide in coal gas include iodometric method, methylene blue method, lead acetate rapid measurement method, gas chromatography method, etc. The iodometric method is a traditional method for measuring hydrogen sulfide, but for low content measurements, the sampling volume is large and the analysis time is long, requiring 2-3 hours per sample. The methylene blue method has a smaller measurement range, suitable for 0-25mg/m, and requires a stable hydrogen sulfide mass concentration; The lead acetate rapid measurement method has a large error. A large number of comparative experiments have shown that gas chromatography for analyzing sulfide content in coal gas has fast analysis speed, high precision, and high accuracy, which is significantly better than other methods such as iodometric method.

This machine adopts a 5.7-inch LCD vertical display with a large Chinese screen, providing clear and intuitive images. 10 temperature control values can be displayed simultaneously on the same interfaceA laboratory analytical instrument with full microcomputer reverse control and network remote control. This instrument is designed based on the principle of separating multi-component mixtures using gas chromatography and then qualitatively and quantitatively detecting them using a detector. It has the following characteristics:

1. Fully equipped with microcomputer reverse control and network remote control functions, equipped with electronic pressure, flow and gas path control system (EPC).

2. There are multiple standard interfaces available for host communication: Ethernet: IEEE802.3, RS-232, and USB.

3The workstation has anti control function and intelligent chromatographic data processing.

4. The temperature, pressure, flow rate, and chromatographic analysis data output signals are all digitized.

5. There are five types of detectors to choose from: FID, TCD, ECD, FPD, TSD.

6. Multiple injection systems are available for selection: packed column system, capillary split/non split system, six way valve gas injection, and automatic headspace injection system.

Analysis of Hydrogen Sulfide in Gas by Gas Chromatography Online ChromatographyMain technical parameters:

Pressure protection method: The carrier gas has pressure protection function. When the gas pressure drops to 0.1mpa, the instrument automatically cuts off the power supply to effectively protect the safety of the chromatographic column.

FID has automatic ignition function, no need for manual ignition

Display mode: 320 × 240 Chinese vertical LCD display

Temperature control area: 10 temperature control channels

Temperature control accuracy: ± 0.1 ℃ - ± 0.2 ℃

Temperature control range: Room temperature ± 8 ℃ -450 ℃, with increments of 1 ℃

Program heating: 16 stage program heating, heating rate 0.1-40 ℃/min, with increments of 0.1 ℃,

Initial and termination time range: 0-6000min, with increments of 1min.

Product configuration:

Instrument: GC-8980H (FPD flame photometric detector+injection valve) 1 SinoNobel instrument
Chromatographic column: GDX301 2 analytical instruments
Data processing: 1 set of chromatography workstation (analysis software)
Gas source: 1 set of domestically produced air, nitrogen, hydrogen gas cylinders or generators
Computer printer: 1 self configured XP system

For more gas chromatography application methods, please consult if needed！

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